A drainage device for road and bridge engineering construction
By designing the drainage device of the cover body body and multi-layer filter, combined with the anti-blocking mechanism of the electric push rod and the spiral cutting knife, the problem of drainage passage blockage caused by garbage accumulation in the prior art is solved, and more efficient garbage filtration and Liquid treatment improves drainage efficiency and equipment life.
Patent Information
- Application Number
- CN202411315448.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2044-09-20
AI Technical Summary
The drainage devices in existing road and bridge construction have accumulated garbage and dust due to the design of drainage wells, which can easily cause the drainage passage to be blocked and affect the drainage efficiency.
A drainage device including a cover body body, a drain pipe and a multi-layer filter mesh is designed. The cover body body is equipped with a cavity and an inclined surface design for collecting garbage. It combines an anti-blocking mechanism with an electric push rod and a spiral cutting knife, which can Efficiently filter and clean up garbage and dispose of liquid garbage through water pumps and sprinkler systems.
It significantly reduces the amount of garbage and dust entering the drainage channel, improves the drainage efficiency and service life of the drainage channel, prevents blockage, and assists in garbage disposal through the utilization of cleaning liquids.
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Figure CN118855077B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of drainage devices, in particular to a drainage device for road and bridge engineering construction. Background Art
[0002] There are many kinds of drainage devices in the construction of road and bridge projects. Their main function is to quickly remove precipitation from the roadbed and road surface to prevent water accumulation from damaging bridges and roads. The drainage system used in bridges is generally to drain water through the built-in drainage channels of the bridges. Due to the large size and length of the bridges, multiple drainage wells will be set up in the drainage channels. Although such a setting can achieve a certain drainage effect for the bridge in a short time, it will also increase the amount of collected garbage and dust. Therefore, it is necessary to repeatedly clean the drainage wells, which is too cumbersome. At the same time, some dirt or garbage that enters the drainage channel through the drainage wells will gradually form blockages in the drainage channel under the long-term use of the drainage wells, affecting the overall drainage efficiency of the drainage channel and easily causing blockage of the drainage channel. Summary of the invention
[0003] The present invention provides a drainage device for road and bridge engineering construction, which overcomes the shortcomings described in the background technology.
[0004] The technical solution adopted by the present invention to solve its technical problem is:
[0005] A drainage device for road and bridge engineering construction, comprising a drainage device body installed in a beam body, a mounting groove for mounting the drainage device body is provided on the surface of the beam body, a drainage channel is provided on both sides of the lower end of the mounting groove, the drainage device body is installed in the mounting groove, and the two ends of the drainage device body are respectively connected with the drainage channels on both sides, the drainage device body comprises a cover body and a drainage pipe, the cover body is covered on the upper end of the drainage pipe, and the upper end edge of the cover body is flush with the surface of the beam body, characterized in that:
[0006] The cover body includes a cover plate and a cover plate base, a cavity for collecting garbage is provided between the cover plate and the cover plate base, a boss protruding upward is provided in the middle of the cover plate base, and a recessed portion is provided between the boss and the edge of the cover plate base, the surface height of the recessed portion is lower than the upper end surface height of the boss, and the recessed portion and the boss and the cover plate base are connected by an inclined surface;
[0007] A first filter screen is arranged in the middle of the cover plate, and a second filter screen is arranged in the middle of the boss, the first filter screen and the second filter screen are arranged coaxially, and the outer diameter of the first filter screen is larger than that of the second filter screen, and the cover plate base is connected with the drain pipe through the second filter screen and the drain pipe arranged on the peripheral surface of the lower end of the cover plate base;
[0008] The drainage pipes are arranged in a circular array, and two ends of the drainage pipes are respectively connected to the surface of the recessed portion and the side of the drainage pipe.
[0009] In a preferred technical solution, the second filter screen has an arc-shaped convex profile, and the second filter screen gradually bulges from the edge to the middle.
[0010] A preferred technical solution is that a plurality of anti-blocking mechanisms are arranged at the lower end of the cover plate, and all the anti-blocking mechanisms correspond to the upper openings of each drainage pipe. The anti-blocking mechanisms are used to press down or crush the garbage at the upper opening of the drainage pipe. The anti-blocking mechanism includes an electric push rod, a motor, a spiral cutting knife, and a nozzle. The motor is installed on the output shaft of the electric push rod, and the spiral cutting knife is installed on the output shaft of the motor. When the spiral cutting knife is driven to rotate by the motor, the electric push rod can be driven to move the motor downward, so that the spiral cutting knife presses down or cuts the garbage at the upper opening of the drainage pipe.
[0011] A preferred technical solution, the drainage pipe is composed of a vertical pipe and a horizontal pipe connected to the left and right sides of the lower end of the vertical pipe, the two horizontal pipes are respectively connected to the two drainage channels in the beam body, the drainage pipe is connected to the side of the vertical pipe, and the lower end surface of the vertical pipe is provided with an inwardly concave liquid collecting tank, and the upper end cover of the liquid collecting tank is provided with a third filter screen, when liquid garbage and liquid are discharged along the vertical pipe, the garbage is filtered through the third filter screen, and the liquid is stored in the liquid collecting tank;
[0012] An annular hollow tube is also provided in the cover plate, and the annular hollow tube extends to the side of each anti-blocking mechanism through a plurality of third connecting tubes. A nozzle is provided at the end of each third connecting tube, and the nozzle is inclined toward the drain pipe. A water pump is provided on the side of the drain pipe, and the input end of the water pump is connected with the liquid collecting tank through a second connecting tube, and the output end of the water pump is connected with the annular hollow tube through a first connecting tube. When the liquid in the liquid collecting tank is extracted by the water pump and transported to the annular hollow tube, the liquid flows to each third connecting tube through the annular hollow tube and is sprayed out through the nozzle.
[0013] A preferred technical solution is that the lower edge of the cover plate is provided with an abutment portion, the cover plate is supported by the abutment portion, and the abutment portion abuts against the inner surface of the cover plate base near the edge, and the cross section of the connection end of the cover plate and the abutment portion is a C-shaped structure;
[0014] The upper surface of the cover plate gradually deepens from the edge to the first filter screen, and the surface of the upper end of the cover plate near the edge is flush with the surface of the beam body.
[0015] A preferred technical solution is that two handles are symmetrically arranged on the side of the cover plate, and handle grooves are arranged at the corresponding positions of the beam body and the two handles. The cross-section of the handle groove is a convex structure, and there is a gap between the handle groove and the handle.
[0016] Compared with the prior art, this technical solution has the following advantages:
[0017] Specifically, when the recessed portion between the boss and the edge in the middle of the cover base is used to process and filter garbage, its special design plays an important role. The surface height of the recessed portion is lower than the upper end surface height of the boss, and they are connected by an inclined surface. This design makes it easier for garbage and dust entering the drainage device to be guided into the recessed portion under the action of gravity and water flow, rather than directly entering the drainage channel. At the same time, the design of the inclined surface also helps garbage and dust to slide and accumulate, further improving the filtering effect. Therefore, when this mechanism processes and filters light garbage such as leaves, paper scraps, plastic bags, etc., it can significantly reduce the amount of them entering the drainage channel, thereby effectively preventing the drainage channel from being blocked.
[0018] When a certain amount of cleaning liquid has accumulated in the liquid collecting tank, it can be considered that the water pump is started to work, and the input end of the water pump is connected to the liquid collecting tank through the second connecting pipe, which means that the water pump can extract liquid from the liquid collecting tank. Subsequently, the output end of the water pump is connected to the annular hollow tube through the first connecting pipe to transport the extracted liquid into the annular hollow tube. The annular hollow tube extends to the side of each anti-blocking mechanism through multiple third connecting tubes, which means that the liquid can flow from the annular hollow tube to each third connecting tube, and a nozzle is provided at the end of each third connecting tube, and the nozzle is inclined toward the discharge pipe. Therefore, when the liquid flows to each third connecting pipe through the annular hollow tube, it will be sprayed out through the nozzle and directly sprayed onto the spiral cutting knife and the garbage at the opening at the upper end of the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] Figure 1 This is an overall diagram of the present invention.
[0021] Figure 2 It is a structural schematic diagram of the drainage device body.
[0022] Figure 3 It is a three-dimensional schematic diagram of the drainage device body.
[0023] Figure 4 It is a structural schematic diagram of the cover base.
[0024] Figure 5 It is a schematic diagram of the exploded structure of the drainage device body.
[0025] Figure 6 for Figure 4 Schematic diagram of the structure from different perspectives.
[0026] Figure 7 It is a half-section front view of the drainage device body.
[0027] Figure 8 for Figure 6 A three-dimensional schematic diagram of .
[0028] Fig. 9 It is a half-section schematic diagram of the cover plate and the cover plate base.
[0029] Fig.10 for Figure 8 Schematic diagram of the decomposition.
[0030] Fig.11 Schematic diagram of the second filter.
[0031] In the figure: drainage device body 1;
[0032] Cover body 11, cover plate 111, cover plate base 112;
[0033] The first filter screen 1111, the anti-blocking mechanism 1112, the electric push rod 011, the motor 012, the spiral cutting knife 013, the nozzle 014, the annular hollow tube 1113, the third connecting tube 1131, and the abutting portion 1114;
[0034] Boss 1121, second filter screen 1122, recessed portion 1123, drain pipe 1124, handle 1125;
[0035] Drain pipe 12, liquid collecting tank 121, third filter screen 122;
[0036] Beam body 100, drainage channel 101, installation groove 102, handle groove 103;
[0037] The water pump 13 , the first communicating pipe 131 , and the second communicating pipe 132 . DETAILED DESCRIPTION
[0038] like Figures 1 to 7 As shown, the present invention proposes a drainage device for road and bridge engineering construction, including a drainage device body 1 installed in a beam body 100, a mounting groove 102 for mounting the drainage device body 1 is provided on the surface of the beam body 100, and a drainage channel 101 is provided on both sides of the lower end of the mounting groove 102, respectively. The drainage device body 1 is installed in the mounting groove 102, and the two ends of the drainage device body 1 are respectively connected to the drainage channels 101 on both sides, and the drainage device body 1 includes a cover body 11 and a drainage pipe 12, the cover body 11 is covered on the upper end of the drainage pipe 12, and the upper end edge of the cover body 11 is flush with the surface of the beam body 100;
[0039] The cover body 11 includes a cover plate 111 and a cover plate base 112, a cavity for collecting garbage is arranged between the cover plate 111 and the cover plate base 112, an upwardly protruding boss 1121 is arranged in the middle of the cover plate base 112, and a recessed portion 1123 is arranged between the boss 1121 and the edge of the cover plate base 112, the surface height of the recessed portion 1123 is lower than the upper end surface height of the boss 1121, the recessed portion 1123 is connected to the boss 1121 and the cover plate base 112 through an inclined surface, in the drainage device for road and bridge engineering construction, the cover body 11 is composed of the cover plate 111 and the cover plate base 112, and this split design has significant advantages over the traditional integral drainage manhole cover. Firstly, the split design makes the cover body 11 more flexible and convenient in manufacturing, installation and maintenance. Secondly, a cavity for collecting garbage is provided between the cover plate 111 and the cover plate base 112. This design effectively intercepts garbage and dust entering the drainage channel, preventing them from accumulating in the drainage channel and causing blockage, thereby improving the drainage efficiency and service life of the drainage channel.
[0040] Specifically, when the boss 1121 in the middle of the cover base 112 and the recessed portion 1123 between the edge are used to process and filter garbage, its special design plays an important role. The surface height of the recessed portion 1123 is lower than the height of the upper end surface of the boss 1121, and they are connected by an inclined surface. This design makes it easier for garbage and dust entering the drainage device to be guided into the recessed portion 1123 under the action of gravity and water flow, rather than directly entering the drainage channel. At the same time, the design of the inclined surface also helps garbage and dust to slide and accumulate, further improving the filtering effect. Therefore, when this mechanism processes and filters light garbage such as leaves, paper scraps, plastic bags, etc., it can significantly reduce the number of them entering the drainage channel, thereby effectively preventing the drainage channel from being blocked.
[0041] Among them, a first filter screen 1111 is arranged in the middle of the cover plate 111, and a second filter screen 1122 is arranged in the middle of the boss 1121. The first filter screen 1111 and the second filter screen 1122 are coaxially arranged, and the outer diameter of the first filter screen 1111 is larger than that of the second filter screen 1122. The cover plate base 112 is connected to the drain pipe 12 through the second filter screen 1122 and a drain pipe 1124 arranged on the circumference of the lower end of the cover plate base 112. The drain pipe 1124 is arranged in a ring array, and the two ends of the drain pipe 1124 are respectively connected to the surface of the recessed portion 1123 and the side of the drain pipe 12. The first filter screen 1111 is arranged in the middle of the cover plate 111 as a preliminary filtering layer, which can intercept larger garbage and impurities and prevent them from directly entering the drainage system below. The coaxial arrangement of the first filter screen 1111 and the second filter screen 1122 makes the filtering process more continuous and efficient. The garbage and impurities are gradually filtered out when passing through the two layers of filters. The two ends of the drain pipe 1124 are respectively connected to the surface of the recessed portion 1123 and the side of the drain pipe 12. This layout ensures that the filtered water flow can be smoothly discharged into the drain pipe 12. At the same time, the garbage and impurities accumulated in the recessed portion 1123 will not hinder the drainage process.
[0042] Among them, the second filter screen 1122 has an arc-shaped convex contour, and the second filter screen 1122 gradually bulges from the edge to the middle. This setting is intended to prevent solid garbage from continuously accumulating on the upper surface of the second filter screen 1122 through the bulged surface, thereby affecting the subsequent falling of garbage.
[0043] Furthermore, a plurality of anti-blocking mechanisms 1112 are provided at the lower end of the cover plate 111, and all the anti-blocking mechanisms 1112 correspond to the upper end openings of the respective drain pipes 1124. The anti-blocking mechanisms 1112 press down or crush the garbage at the upper end openings of the drain pipes 1124. The anti-blocking mechanisms 1112 include an electric push rod 011, a motor 012, a spiral cutter 013, and a nozzle 014. The motor 012 is mounted on the output shaft of the electric push rod 011, and the spiral cutter 013 is mounted on the output shaft of the motor 012. When the motor 012 drives the spiral cutting knife 013 to rotate, it drives the electric push rod 011 to move the motor 012 downward, so that the spiral cutting knife 013 presses down or cuts the garbage at the upper opening of the drain pipe 1124. When garbage accumulates at the upper opening of the drain pipe 1124, the motor 012 will drive the spiral cutting knife 013 to rotate, and at the same time, the electric push rod 011 will move the motor 012 downward, driving the spiral cutting knife 013 to press down or cut the garbage at that location. This design not only effectively prevents garbage from clogging the drain pipe 1124, but also ensures the smooth operation of the drainage system.
[0044] Furthermore, the drainage pipe 12 is composed of a vertical pipe and horizontal pipes connected to the left and right sides of the lower end of the vertical pipe. The two horizontal pipes are respectively connected to the two drainage channels 101 in the beam body 100. The drainage pipe 1124 is connected to the side of the vertical pipe, and the lower end surface of the vertical pipe is provided with an inwardly concave liquid collecting tank 121, and the upper end of the liquid collecting tank 121 is covered with a third filter screen 122. When liquid garbage and liquid are discharged along the vertical pipe, the garbage is filtered by the third filter screen 122, and the liquid is stored in the liquid collecting tank 121.
[0045] An annular hollow tube 1113 is also provided in the cover plate 111. The annular hollow tube 1113 extends to the side of each anti-blocking mechanism 1112 through a plurality of third connecting tubes 1131. A nozzle 014 is provided at the end of each third connecting tube 1131. The nozzle 014 is tilted toward the drain pipe 1124. A water pump 13 is provided on the side of the drain pipe 12. The input end of the water pump 13 is connected to the liquid collecting tank 121 through a second connecting tube 132, and the output end of the water pump 13 is connected to the annular hollow tube 1113 through a first connecting tube 131. When the liquid in the liquid collecting tank 121 is extracted by the water pump 13 and transported to the annular hollow tube 1113, the liquid flows to each third connecting tube 1131 through the annular hollow tube 1113 and is sprayed out through the nozzle 014.
[0046] The liquid collecting tank 121 plays an important role in the drainage device. It is arranged on the lower end surface of the vertical pipe and is recessed inward. Such a design helps to collect and store the liquid discharged along the vertical pipe. More importantly, the upper end cover of the liquid collecting tank 121 is provided with a third filter screen 122. This setting can filter the garbage in the liquid and ensure that only clean liquid is stored.
[0047] When a certain amount of cleaning liquid accumulates in the liquid collecting tank 121, it can be considered that the water pump 13 is started to work, and the input end of the water pump 13 is connected to the liquid collecting tank 121 through the second connecting pipe 132, which means that the water pump 13 can extract liquid from the liquid collecting tank 121. Subsequently, the output end of the water pump 13 is connected to the annular hollow pipe 1113 through the first connecting pipe 131, and the extracted liquid is transported to the annular hollow pipe 1113;
[0048] The annular hollow tube 1113 extends to the side of each anti-blocking mechanism 1112 through multiple third connecting tubes 1131, which means that the liquid can flow from the annular hollow tube 1113 to each third connecting tube 1131, and a nozzle 014 is provided at the end of each third connecting tube 1131, and the nozzle 014 is inclined toward the drain pipe 1124. Therefore, when the liquid flows to each third connecting tube 1131 through the annular hollow tube 1113, it will be sprayed outward through the nozzle 014 and directly sprayed onto the garbage at the upper opening of the spiral cutting knife 013 and the drain pipe 1124.
[0049] Such a design not only effectively utilizes the cleaning liquid collected in the liquid collecting tank 121, but also sprays the liquid to the area that needs to be cleaned through the cooperation of the water pump 13, the annular hollow tube 1113 and the third connecting tube 1131, thereby assisting the spiral cutting knife 013 to better handle the garbage and prevent the drainage pipe 1124 from being blocked.
[0050] The lower edge of the cover plate 111 is provided with an abutment portion 1114, the cover plate 111 is supported by the abutment portion 1114, and the abutment portion 1114 abuts against the inner surface of the cover plate base 112 near the edge, the cross section of the connection end of the cover plate 111 and the abutment portion 1114 is a C-shaped structure, the upper end surface of the cover plate 111 gradually deepens from the edge to the first filter screen 1111, and the upper end surface of the cover plate 111 near the edge is flush with the surface of the beam body 100, and this is set to form support through the structural shape of the abutment portion 1114, and as Figure 3 , Figure 4 As shown, the surface of the cover plate 111 gradually deepens from the edge to the first filter screen 1111, so as to guide the surrounding liquid to flow in and avoid the appearance of steps on the surface of the cover plate 111 to affect the driving of the vehicle.
[0051] Among them, two handles 1125 are symmetrically arranged on the side of the cover plate 111, and handle grooves 103 are arranged at the corresponding positions of the beam body 100 and the two handles 1125. The cross-section of the handle groove 103 is a convex structure, and there is a gap between the handle groove 103 and the handles 1125. When the cover plate 111 is closed, the handle 1125 will be embedded in the handle groove 103, so that the cover plate and the beam body are more closely fitted, thereby improving the overall sealing and aesthetics. The cross-section of the handle groove 103 is a convex structure. This design enables the handle groove 103 to provide more stable support when the handle 1125 is embedded, preventing the handle 1125 from shaking or falling off in the groove. The gap between the handle groove 103 and the handle 1125 ensures that the handle 1125 can be smoothly embedded in and out of the handle groove 103, and avoids wear or jamming caused by too tight fit.
[0052] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.
Claims
1. A drainage device for road and bridge engineering construction, comprising a drainage device body (1) installed in a beam body (100), a mounting groove (102) for mounting the drainage device body (1) being provided on the surface of the beam body (100), a drainage channel (101) being provided on both sides of the lower end of the mounting groove (102), the drainage device body (1) being installed in the mounting groove (102), and both ends of the drainage device body (1) being respectively connected to the drainage channels (101) on both sides, the drainage device body (1) comprising a cover body (11) and a drainage pipe (12), the cover body (11) being provided on the upper end of the drainage pipe (12), and the upper edge of the cover body (11) being flush with the surface of the beam body (100), characterized in that: The cover body (11) comprises a cover plate (111) and a cover plate base (112); a cavity for collecting garbage is provided between the cover plate (111) and the cover plate base (112); a boss (1121) protruding upward is provided in the middle of the cover plate base (112); a recessed portion (1123) is provided between the boss (1121) and the edge of the cover plate base (112); the surface height of the recessed portion (1123) is lower than the upper end surface height of the boss (1121); and the recessed portion (1123) is connected to the boss (1121) and the cover plate base (112) via an inclined surface; A first filter screen (1111) is arranged in the middle of the cover plate (111), and a second filter screen (1122) is arranged in the middle of the boss (1121); the first filter screen (1111) and the second filter screen (1122) are arranged coaxially, and the outer diameter of the first filter screen (1111) is larger than that of the second filter screen (1122); the cover plate base (112) is connected to the drain pipe (12) through the second filter screen (1122) and a drain pipe (1124) arranged on the circumference of the lower end of the cover plate base (112); The drainage pipes (1124) are arranged in a ring array, and the two ends of the drainage pipes (1124) are respectively connected to the surface of the recessed portion (1123) and the side of the drainage pipe (12); A plurality of anti-blocking mechanisms (1112) are arranged at the lower end of the cover plate (111), and all the anti-blocking mechanisms (1112) correspond to the upper openings of the respective drainage pipes (1124). The anti-blocking mechanisms (1112) are used to press down or break garbage located at the upper openings of the drainage pipes (1124). The anti-blocking mechanisms (1112) include an electric push rod (011), a motor (012), a spiral cutting knife (013), and a nozzle (014). The motor (012) is mounted on the output shaft of the electric push rod (011), and the spiral cutting knife (013) is mounted on the output shaft of the motor (012). When the spiral cutting knife (013) is driven to rotate by the motor (012), the electric push rod (011) is driven to move the motor (012) downward, so that the spiral cutting knife (013) presses down or cuts garbage located at the upper openings of the drainage pipes (1124); The drainage pipe (12) is composed of a vertical pipe and horizontal pipes connected to the left and right sides of the lower end of the vertical pipe. The two horizontal pipes are respectively connected to the two drainage channels (101) in the beam body (100). The drainage pipe (1124) is connected to the side of the vertical pipe, and the lower end surface of the vertical pipe is provided with an inwardly recessed liquid collecting tank (121), and the upper end cover of the liquid collecting tank (121) is provided with a third filter screen (122). When liquid garbage and liquid are discharged along the vertical pipe, the garbage is filtered by the third filter screen (122), and the liquid is stored in the liquid collecting tank (121); An annular hollow tube (1113) is also provided in the cover plate (111). The annular hollow tube (1113) extends to the side of each anti-blocking mechanism (1112) through a plurality of third connecting tubes (1131). A nozzle (014) is provided at the end of each third connecting tube (1131). The nozzle (014) is inclined toward the drain pipe (1124). A water pump (13) is provided on the side of the drain pipe (12). The input end of the water pump (13) is connected to the drain pipe (124) through a second connecting tube (132). The first connecting pipe (131) is connected to the liquid collecting tank (121), and the output end of the water pump (13) is connected to the annular hollow tube (1113) through a first connecting pipe (131). When the liquid in the liquid collecting tank (121) is extracted by the water pump (13) and transported to the annular hollow tube (1113), the liquid flows to each third connecting tube (1131) through the annular hollow tube (1113) and is sprayed out through the nozzle (014).
2. A drainage device for road and bridge engineering construction according to claim 1, characterized in that: The second filter screen (1122) has an arc-shaped convex profile, and the second filter screen (1122) gradually bulges from the edge to the middle.
3. A drainage device for road and bridge engineering construction according to claim 1, characterized in that: The lower edge of the cover plate (111) is provided with an abutment portion (1114), the cover plate (111) is supported by the abutment portion (1114), and the abutment portion (1114) abuts against the inner surface of the cover plate base (112) near the edge, and the cross section of the connection end between the cover plate (111) and the abutment portion (1114) is a C-shaped structure; The upper end surface of the cover plate (111) gradually deepens from the edge to the first filter screen (1111), and the surface of the upper end of the cover plate (111) near the edge is flush with the surface of the beam body (100).
4. A drainage device for road and bridge engineering construction according to claim 3, characterized in that: Two handles (1125) are symmetrically arranged on the side of the cover plate (111), and a handle groove (103) is arranged at the corresponding positions of the beam body (100) and the two handles (1125), wherein the cross section of the handle groove (103) is a convex-shaped structure, and a gap exists between the handle groove (103) and the handle (1125).
Citation Information
Cited By
Road and bridge engineering drainage device
CN120311584A
