Multi-slope control device and multi-slope control method in sawtooth street ditch construction

Abstract

The application discloses a multi-slope control device in zigzag street ditch construction, which comprises a frame, the cross section of the frame in the left-right direction is in the shape of E, the E-shaped frame has a top edge, a left vertical edge, a right vertical edge and a middle vertical edge, the left vertical edge comprises a left front vertical edge and a left rear vertical edge, a longitudinal slope adjusting structure is connected between the left front vertical edge and the left rear vertical edge, the longitudinal slope adjusting structure is slidably connected with a transverse slope adjusting structure, the longitudinal slope adjusting structure is used for restricting the slope when the transverse slope adjusting structure moves forward and backward, the transverse slope adjusting structure is used for controlling the transverse slope of a mortar leveling layer and controlling the longitudinal slope of the mortar leveling layer through the forward and backward moving slope of the longitudinal slope adjusting structure, and the mortar leveling layer top surface is once leveled to the predetermined longitudinal slope and transverse slope. The application further discloses a corresponding multi-slope control method, the multi-slope control device in zigzag street ditch construction is adjusted twice according to the slopes in two directions before construction, without complicated measurement and calculation, and the adjustment is convenient.

Description

Technical Field

[0001] This invention relates to the field of municipal road construction, specifically to a multi-slope control device and method for the construction of sawtooth street ditches. Background Technology

[0002] When the longitudinal slope of a road is less than 0.3%, it means that the road surface slope is very gentle, resulting in weak water flow dynamics and insufficient drainage capacity, which may lead to the following problems: Water stagnation: Due to insufficient slope to promote rapid longitudinal flow of water, rainwater may accumulate on the road surface, forming puddles or waterlogged areas.

[0003] Road surface damage: Prolonged water accumulation can seep into the roadbed, causing damage to the road surface structure, such as road subsidence and cracking, thus shortening the road's service life.

[0004] Driving safety hazards: Standing water can worsen driving conditions and increase the risk of traffic accidents. Reflections on the water surface can also impair the driver's vision, and flooded areas can easily cause vehicles to skid.

[0005] Pedestrian inconvenience: Water accumulation can affect the use of sidewalks and crossing facilities. Pedestrians may be splashed with water or need to take detours when crossing, causing inconvenience.

[0006] Environmental and sanitation issues: Stagnant water can also lead to sewage retention, becoming a breeding ground for mosquitoes and causing environmental and public health problems.

[0007] Therefore, in order to ensure the drainage efficiency and service life of roads and improve the safety of vehicles and pedestrians, especially on urban roads with a longitudinal slope of less than 0.3%, it is necessary to achieve effective longitudinal drainage by designing reasonable drainage facilities such as sawtooth street ditches.

[0008] When using a sawtooth-shaped street ditch, while keeping the top surface of the curbstone parallel to the longitudinal slope design line of the road centerline, the height between the top surface line of the curbstone and the flat stone (or road surface) is changed alternately, that is, the height of the curbstone is changed alternately. A rainwater inlet is set at the lowest point, and the cross slope of the road surface at the inlet is enlarged, while the cross slope at the water dividing point between the two inlets is reduced. This causes the longitudinal slope of the flat stones on both sides of the carriageway to change with the elevation of the inlet and the water dividing point, thus making the longitudinal slope line of the street ditch form a sawtooth shape.

[0009] In this invention, the road width direction is defined as the left-right direction, the road length direction as the front-back direction, the road descent direction as the forward direction, and the direction pointing towards the road centerline as the inward direction.

[0010] The sawtooth-shaped street ditch is sawtooth-shaped in both left and right view directions. Side stones and flat stones are designed on both sides of the road. The side stones are located outside the flat stones and are adjacent to them. The top surface of the side stones is horizontal. The top surface of the flat stones is flush with the road surface and has a slope that is consistent with the road slope in both the left and right and front and back directions. The slope in the width direction of the road is called the cross slope, and the slope in the length direction of the road is called the transverse slope.

[0011] The vertical structural layers of the road are as follows: the bottom layer is the foundation layer, which is the road structure layer. A concrete subbase is laid on the road structure layer, which provides a solid and stable surface. A mortar leveling layer is set on the concrete subbase, and the pavement layer is set on the mortar leveling layer.

[0012] In sawtooth-shaped street gutters, while the slope of the pavement layer ultimately needs to be controlled, the slope of the mortar leveling layer must be controlled first. During construction, precise control of the longitudinal and transverse slopes of the mortar leveling layer is necessary to provide a foundation for the pavement layer slope (including the slope of the top surface of the paving stones). After the paving stones are installed on the slope-controlled mortar leveling layer, the slope of the top surface of the paving stones will naturally meet the design requirements.

[0013] The goal of this invention is to control the slope of the mortar leveling layer at the flat stone so that the longitudinal and transverse slopes of the top surface of the flat stone meet the design objectives.

[0014] Because it is necessary to control both the longitudinal and transverse slopes, current technologies often employ conventional straightedge and feeler gauge methods. This requires calculating the corresponding slope based on the designed transverse and longitudinal slopes, the elevation difference between the low and high points, and the distance between the two points. This process is cumbersome and makes it difficult to control the slopes in both directions in a single operation. It requires measuring and calculating the transverse and longitudinal slopes separately, resulting in high overall construction difficulty and low efficiency.

[0015] If the slope control is carried out by the line method, the cross slope and longitudinal slope of the flat stone are different, and the inner and outer edges need to be controlled. When two control lines are placed, the flat stone will inevitably touch the control line during the lowering process, which will affect the actual construction accuracy.

[0016] In addition, existing slope control operations have fluctuations inherent in manual operations, meaning that slope control often cannot perfectly match the designed slope target (due to human error).

[0017] The construction of sawtooth-shaped street ditches requires high standards for both cross slope and longitudinal slope. If the slope is not properly controlled, water accumulation on the road surface is very likely to occur, and its main function will be lost. Summary of the Invention

[0018] The purpose of this invention is to provide a multi-slope control device for the construction of sawtooth street ditches, which solves the technical problems of controlling the longitudinal slope and transverse slope of flat stones in one go without the need for a complicated measurement and control process, while avoiding the phenomenon of human error in slope control in manual operation.

[0019] To achieve the above objectives, this invention discloses a multi-slope control device for the construction of sawtooth street ditches, with the road width direction as the left-right direction, the road length direction as the front-back direction, and the road descent direction as the forward direction; The system includes a frame with an E-shaped cross-section in the left-right direction. The opening of the E-shaped frame faces downwards. The E-shaped frame has a top edge, a left vertical edge, a right vertical edge, and a middle vertical edge. The middle and right vertical edges form a downward-opening translational sliding positioning groove. This groove matches the curb of the road and is used to cover the upper part of the curb, keeping the top edge of the frame horizontal. The left vertical edge includes a front left vertical edge and a rear left vertical edge. A longitudinal slope adjustment structure is connected between the left front vertical edge and the left rear vertical edge. The longitudinal slope adjustment structure is slidably connected to a transverse slope adjustment structure. The longitudinal slope adjustment structure is used to constrain the slope when the transverse slope adjustment structure moves back and forth. The transverse slope adjustment structure is used to control the transverse slope of the mortar leveling layer by its own tilt angle and to control the longitudinal slope of the mortar leveling layer by the slope of the forward and backward movement supported by the longitudinal slope adjustment structure, so as to achieve the one-time smoothing of the top surface of the mortar leveling layer to the predetermined longitudinal slope and transverse slope.

[0020] The longitudinal slope adjustment structure is: The length of the left rear vertical side is shorter than that of the left front vertical side; the left rear vertical side is connected downward to the rear telescopic ruler, and the left front vertical side is connected downward to the front telescopic ruler; a longitudinal slope adjustment beam is connected between the bottom end of the rear telescopic ruler and the bottom end of the front telescopic ruler, and the longitudinal slope adjustment beam is bolted to both the rear and front telescopic rulers, and the front and rear tilt angles of the longitudinal slope adjustment beam are consistent with the predetermined longitudinal slope.

[0021] The cross slope adjustment structure is: The cross slope adjustment structure includes a sliding block with an inclined sliding positioning groove at the bottom of the sliding block facing downwards. The sliding block is slidably engaged with the longitudinal slope adjustment beam through the inclined sliding positioning groove. A protractor structure is fixedly connected to the top of the sliding block. An inclined scraper is bolted to the origin of the protractor structure. The angle of the scraper tilting left and right is consistent with the predetermined cross slope.

[0022] An upper roller is installed on the inner surface of the top wall of the sliding positioning groove, and the upper roller rolls and presses against the top surface of the side stone; a right roller is installed on the inner wall of the right side of the sliding positioning groove, and the right roller rolls and presses against the right surface of the side stone; a left roller is installed on the inner wall of the left side of the sliding positioning groove, and the left roller rolls and presses against the left surface of the side stone. The scraper has an L-shaped cross-section.

[0023] This invention also discloses a method for controlling multi-slope using the aforementioned sawtooth-shaped street ditch construction multi-slope control device, which is carried out according to the following steps: During the construction of sawtooth-shaped street ditches, when storing the multi-faceted slope control device, the front telescopic ruler, the rear telescopic ruler, and the longitudinal slope adjustment beam are removed from the E-shaped frame. The first step is to install the E-shaped frame. This step is carried out before the installation of the boulders. Before this step, the boulders have been installed in place and their top surfaces are horizontal. The road structure layer and concrete subbase under the boulders have been completed. The mortar leveling layer is laid on the concrete subbase to control its longitudinal and transverse slopes. This step involves attaching the sliding positioning groove to the curbstone. At this point, the curbstone is sandwiched between the left and right rollers, and the upper roller presses against the top surface of the curbstone, ensuring that the top edge of the E-shaped frame is horizontal and the left, right, and middle vertical edges are all vertical. The direction of progress during construction is the downhill direction of the road slope. The second step is to install the longitudinal slope adjustment structure so that the slope of the longitudinal slope adjustment beam is the same as the predetermined longitudinal slope. The third step is to install the cross slope adjustment structure so that the angle of the scraper tilting left and right is consistent with the predetermined cross slope. The fourth step is to push the sliding block from back to front, so that the sliding block drives the protractor structure and scraper to move towards the front longitudinal slope adjustment beam until the sliding block contacts the front telescopic ruler, thus ending the fourth step. During the forward movement, the scraper removes excess material from the top surface of the mortar leveling layer, and controls the longitudinal and transverse slopes of the top surface of the mortar leveling layer to the predetermined longitudinal and transverse slopes through a single movement. After the fourth step is completed, the slope control of the mortar leveling layer of the road section is completed. The sliding block is pushed backward to the rear end of the longitudinal slope adjustment beam and to the rear telescopic ruler. Then, the E-shaped frame is pushed forward along the top of the side stone, and the distance of the E-shaped frame in the front-back direction is increased. Then, the fourth step is repeated until the travel of the E-shaped frame covers the entire length of the predetermined road section, and the slope control of the mortar leveling layer of this road section is completed.

[0024] The second step is as follows: the predetermined longitudinal slope is 0.N%, where N is a positive real number; the length of the E-shaped frame in the front-to-back direction is L millimeters; where L is a positive real number; the height difference = L × 0.N% millimeters; Connect the front telescopic ruler downwards on the left front vertical side and the rear telescopic ruler downwards on the left rear vertical side. Adjust the front telescopic ruler to its maximum downward extension. Adjust the rear telescopic ruler downwards to its maximum extension, then retract it upwards by L×0.N% millimeters. Use fixing bolts to fix the rear end of the longitudinal slope adjustment beam to the connection hole at the lower end of the rear telescopic ruler. Use fixing bolts to fix the front end of the longitudinal slope adjustment beam to the connection hole at the lower end of the front telescopic ruler. At this point, the slope of the longitudinal slope adjustment beam is fixed to the predetermined longitudinal slope.

[0025] The third step is as follows: slide the sliding block from top to bottom onto the longitudinal slope adjustment beam through its inclined sliding positioning groove, and push the sliding block to the rear end of the longitudinal slope adjustment beam to abut against the rear telescopic ruler; loosen the bolts between the scraper and the protractor structure, and adjust the left and right tilt angle of the scraper to match the predetermined cross slope according to the reading of the protractor structure, and then tighten the bolts to fix the tilt angle of the scraper; at this time, the lower surface of the scraper is lower than the top surface of the constructed mortar leveling layer and is consistent with the design height of the top surface of the mortar leveling layer.

[0026] The present invention has the following advantages: Using the structure of this invention, the longitudinal slope adjustment structure can easily control the front and rear slopes of the mortar leveling layer, while the transverse slope adjustment structure itself controls the transverse slope of the mortar leveling layer. Based on the slopes in both directions, the multi-slope control device in the sawtooth street ditch construction can be adjusted twice before construction, eliminating the need for complex measurements and calculations and facilitating adjustment. Because... When the transverse slope adjustment structure moves back and forth along the longitudinal slope adjustment structure, it naturally inherits the front and rear slopes of the longitudinal slope adjustment structure. Therefore, the transverse slope adjustment structure can simultaneously and accurately control the longitudinal slope and transverse slope of the mortar leveling layer during its forward and backward movement.

[0027] The arrangement of the upper roller, left roller, and right roller transforms the sliding friction between the translational sliding positioning groove and the top surface of the side stone into rolling friction, which not only saves manpower when moving along the side stone, but also reduces wear during use and extends the service life of the invention.

[0028] The scraper has an L-shaped cross-section. When scraping away excess material from the upper layer of the mortar leveling layer using the bottom plate within the L-shape, the vertical plate within the L-shape blocks the scraped excess material (mortar), causing it to be pushed forward without falling onto the mortar leveling layer behind the scraper, where the slope has already been controlled. The forward direction of this invention is downhill, which also facilitates the scraped mortar falling forward without affecting the mortar leveling layer behind it, where the slope has already been controlled.

[0029] The multi-slope control method of this invention is very simple. It only requires sliding the sliding block from back to front to the front telescopic ruler to simultaneously control the front and rear slopes (longitudinal slope) and left and right slopes (cross slope) of the mortar leveling layer, significantly improving slope control efficiency compared to previous methods. Not only is the actual operation simple, but there is also no complex calculation work before the actual slope control operation (sliding the sliding block back and forth). Cross slope control requires no calculation, only one angle measurement; longitudinal slope control only requires calculating the product of two numbers (L×0.N%), which is greatly simplified compared to previous methods. This invention reduces the knowledge requirements for construction personnel and significantly reduces the workload of slope control construction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention installed on the road curb (the sliding block and the measuring structure are omitted).

[0031] Figure 2 This is a side view diagram of the structure connecting the left front vertical side and the left rear vertical side to the longitudinal slope adjustment beam.

[0032] Figure 3 This is a schematic diagram of the cross slope adjustment structure.

[0033] Figure 4 This is the left view of the cross slope scraper. Detailed Implementation

[0034] In this invention, the road width direction is defined as the left-right direction, i.e., the lateral direction; the road length direction is defined as the front-back direction, i.e., the longitudinal direction; and the road descent direction is defined as the forward direction.

[0035] like Figures 1 to 4 As shown, the present invention provides a multi-slope control device for the construction of sawtooth street ditches, including a frame. The cross-section of the frame in the left-right direction is E-shaped. The opening of the E-shaped frame is set downward. The E-shaped frame has a top edge 1, a left vertical edge 2, a right vertical edge 3, and a middle vertical edge 4. The middle vertical edge 4 and the right vertical edge 3 (or the left vertical edge 2) form a downward-opening translational sliding positioning groove 5. The translational sliding positioning groove 5 matches the curb stone 6 of the road and is used to cover the upper part of the curb stone 6 to keep the top edge 1 of the frame in a horizontal state. The left vertical edge 2 includes a left front vertical edge 21 and a left rear vertical edge 22. A longitudinal slope adjustment structure is connected between the left front vertical side 21 and the left rear vertical side 22. The longitudinal slope adjustment structure is slidably connected to a transverse slope adjustment structure. The longitudinal slope adjustment structure is used to constrain the slope when the transverse slope adjustment structure moves back and forth. The transverse slope adjustment structure is used to control the transverse slope of the mortar leveling layer by its own tilt angle and to control the longitudinal slope of the mortar leveling layer by the slope of the forward and backward movement supported by the longitudinal slope adjustment structure, so as to achieve the one-time smoothing of the top surface of the mortar leveling layer to the predetermined longitudinal slope and transverse slope.

[0036] Using the structure of this invention, the longitudinal slope adjustment structure can easily control the front and rear slopes of the mortar leveling layer, while the transverse slope adjustment structure itself controls the transverse slope of the mortar leveling layer. Based on the slopes in both directions, the multi-slope control device in the sawtooth street ditch construction can be adjusted twice before construction, eliminating the need for complex measurements and calculations and facilitating adjustment. Because... When the transverse slope adjustment structure moves back and forth along the longitudinal slope adjustment structure, it naturally inherits the front and rear slopes of the longitudinal slope adjustment structure. Therefore, the transverse slope adjustment structure can simultaneously and accurately control the longitudinal slope and transverse slope of the mortar leveling layer during its forward and backward movement.

[0037] The longitudinal slope adjustment structure is: The length of the left rear vertical side 22 is shorter than that of the left front vertical side 21; the left rear vertical side 22 is connected downward to the rear telescopic ruler 9, and the left front vertical side 21 is connected downward to the front telescopic ruler 10; a longitudinal slope adjustment beam 11 is connected between the bottom end of the rear telescopic ruler 9 and the bottom end of the front telescopic ruler 10, and the longitudinal slope adjustment beam 11 is bolted to both the rear telescopic ruler 9 and the front telescopic ruler 10 (for easy disassembly and installation), and the front and rear tilt angles of the longitudinal slope adjustment beam 11 are consistent with the predetermined longitudinal slope.

[0038] The cross slope adjustment structure includes a sliding block 12. The bottom of the sliding block 12 is provided with an inclined sliding positioning groove 13 with the opening facing downward. The sliding block 12 is slidably engaged with the longitudinal slope adjustment beam 11 through the inclined sliding positioning groove 13. The top of the sliding block 12 is fixedly connected to a protractor structure 14 (preferably integrated). The origin part 19 of the protractor structure 14 (i.e., the starting point of all its angle lines, which is the center of the protractor arc) is connected to an inclined scraper 15 by bolts. The left and right tilt angle of the scraper 15 is consistent with the predetermined cross slope.

[0039] The origin of the protractor structure 14 is preferably located directly above the inclined sliding positioning groove 13.

[0040] An upper roller 16 is installed on the inner surface of the top wall of the sliding positioning groove 5, and the upper roller 16 rolls and presses against the top surface of the side stone 6; a right roller 17 is installed on the inner wall of the right side of the sliding positioning groove 5, and the right roller 17 rolls and presses against the right surface of the side stone 6; a left roller 18 is installed on the inner wall of the left side of the sliding positioning groove 5, and the left roller 18 rolls and presses against the left surface of the side stone 6. The arrangement of the upper roller 16, left roller 18 and right roller 17 transforms the sliding friction between the translational sliding positioning groove 5 and the top surface of the side stone 6 into rolling friction, which not only saves manpower when moving along the side stone 6, but also reduces wear during use and extends the service life of the invention.

[0041] The scraper 15 has an L-shaped cross-section, with a pointed blade at the bottom and front of the L-shape. This blade is advantageous for scraping away excess material from the mortar leveling layer. When scraping away excess material from the upper layer of the mortar leveling layer using the bottom plate of the L-shape of the scraper 15, the vertical plate within the L-shape of the scraper 15 can block the scraped excess material (mortar), causing it to be pushed forward and preventing it from falling onto the mortar leveling layer behind the scraper 15, where the slope has already been controlled. The forward direction of the construction direction in this invention is downhill, which also facilitates the scraped mortar falling forward without affecting the mortar leveling layer behind it, where the slope has already been controlled.

[0042] This invention also discloses a method for controlling multi-slope using the aforementioned sawtooth-shaped street ditch construction multi-slope control device, which is carried out according to the following steps: When storing the multi-slope control device during the construction of sawtooth-shaped street ditches, the front telescopic ruler 10, the rear telescopic ruler 9, and the longitudinal slope adjustment beam 11 are removed from the E-shaped frame to facilitate preservation. The first step is to install the E-shaped frame, which is done before installing the flat stones. Before this step, the curb stones 6 have been installed in place and their top surfaces are horizontal. The road structure layer and concrete subbase under the flat stones have been completed. The mortar leveling layer is laid on the concrete subbase to control its longitudinal slope (i.e., front and rear slope) and transverse slope (i.e., left and right slope). This step involves attaching the sliding positioning groove 5 to the side stone 6. At this time, the side stone 6 is sandwiched between the left roller 18 and the right roller 17, and the upper roller 16 presses on the top surface of the side stone 6, so that the top edge 1 of the E-shaped frame is in a horizontal state and the left vertical edge 2, right vertical edge 3 and middle vertical edge 4 are all in a vertical state; the direction of advancement during construction is the downhill direction of the road slope; The second step is to install the longitudinal slope adjustment structure so that the slope of the longitudinal slope adjustment beam 11 is the same as the predetermined longitudinal slope. The third step is to install the cross slope adjustment structure so that the angle of the scraper blade at about 15 degrees is consistent with the predetermined cross slope. The fourth step is to push the sliding block 12 from back to front, so that the sliding block 12 drives the protractor structure 14 and the scraper 15 to move towards the front longitudinal slope adjustment beam 11 until the sliding block 12 contacts the front telescopic ruler 10 and the fourth step ends. During the forward movement, scraper 15 scrapes away the excess on the top surface of the mortar leveling layer, and controls the longitudinal and transverse slopes of the top surface of the mortar leveling layer to the predetermined longitudinal and transverse slopes through one movement. After the fourth step is completed, the slope control of the mortar leveling layer of the road section is completed. The sliding block 12 is pushed backward to the rear end of the longitudinal slope adjustment beam 11 and abuts against the rear telescopic ruler 9. Then, the E-shaped frame is pushed forward along the top surface of the side stone 6, and the pushing distance is the length of the E-shaped frame in the front-back direction. Then, the fourth step is repeated until the travel of the E-shaped frame covers the entire length of the predetermined road section, and the slope control of the mortar leveling layer of this road section is completed.

[0043] The multi-slope control method of this invention is very simple. It only requires sliding the sliding block 12 from back to front to the front telescopic ruler 10 to simultaneously control the front and rear slopes (longitudinal slope) and left and right slopes (cross slope) of the mortar leveling layer, thus improving the efficiency of slope control compared to previous methods. Not only is the actual operation simple, but there is also no complex calculation work before the actual slope control operation (sliding the sliding block 12 back and forth). Cross slope control does not require calculation; only angle measurement is needed once. Longitudinal slope control only requires calculating the product of two numbers (L×0.N%), which is significantly simplified compared to previous methods. This invention reduces the knowledge requirements for construction personnel and greatly reduces the workload of slope control construction.

[0044] The second step is as follows: the predetermined longitudinal slope is 0.N%, where N is a positive real number; the length of the E-shaped frame in the front-to-back direction is L millimeters; where L is a positive real number; the height difference = L × 0.N% millimeters; in this embodiment, L = 2000 millimeters, N = 3, and the height difference = 6 millimeters.

[0045] Connect the front telescopic ruler 10 downwards on the left front vertical side 21, and connect the rear telescopic ruler 9 downwards on the left rear vertical side 22. Adjust the front telescopic ruler 10 to its maximum downward extension state. Adjust the rear telescopic ruler 9 first downwards to its maximum extension state, and then upwards to retract L×0.N% mm. Use fixing bolts to fix the rear end of the longitudinal slope adjustment beam 11 to the connection hole at the lower end of the rear telescopic ruler 9. Use fixing bolts to fix the front end of the longitudinal slope adjustment beam 11 to the connection hole at the lower end of the front telescopic ruler 10. At this time, the slope of the longitudinal slope adjustment beam 11 is fixed to the predetermined longitudinal slope.

[0046] The third step is as follows: slide the sliding block 12 from top to bottom onto the longitudinal slope adjusting beam 11 through its inclined sliding positioning groove 13, and push the sliding block 12 to the rear end of the longitudinal slope adjusting beam 11 to abut against the rear telescopic ruler 9; loosen the bolts between the scraper 15 and the protractor structure 14, and according to the reading of the protractor structure 14, the construction personnel adjust the left and right tilt angle of the scraper 15 to be consistent with the predetermined cross slope, and then tighten the bolts to fix the tilt angle of the scraper 15; at this time, the lower surface of the scraper 15 is lower than the top surface of the constructed mortar leveling layer (slightly lower is sufficient to ensure that the mortar leveling layer can be scraped to control its surface slope); and is consistent with the design height of the top surface of the mortar leveling layer.

[0047] The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-slope control device for the construction of sawtooth-shaped street ditches, with the road width direction as the left-right direction, the road length direction as the front-back direction, and the road descent direction as the forward direction; characterized in that: The frame has an E-shaped cross-section in the left-right direction, with the opening of the E-shaped frame facing downwards. The E-shaped frame has a top edge, a left vertical edge, a right vertical edge, and a middle vertical edge. The middle vertical edge and the right vertical edge form a downward-opening translational sliding positioning groove. The translational sliding positioning groove matches the curb of the road and is used to cover the upper part of the curb to keep the top edge of the frame in a horizontal state. The left vertical edge includes a left front vertical edge and a left rear vertical edge. A longitudinal slope adjustment structure is connected between the left front vertical edge and the left rear vertical edge. The longitudinal slope adjustment structure is slidably connected to a transverse slope adjustment structure. The longitudinal slope adjustment structure is used to constrain the slope when the transverse slope adjustment structure moves back and forth. The transverse slope adjustment structure is used to control the transverse slope of the mortar leveling layer by its own tilt angle and to control the longitudinal slope of the mortar leveling layer by the slope of the forward and backward movement supported by the longitudinal slope adjustment structure, so as to smooth the top surface of the mortar leveling layer to the predetermined longitudinal slope and transverse slope in one go. The longitudinal slope adjustment structure is: The length of the left rear vertical side is shorter than that of the left front vertical side; the left rear vertical side is connected downward to the rear telescopic ruler, and the left front vertical side is connected downward to the front telescopic ruler; a longitudinal slope adjustment beam is connected between the bottom end of the rear telescopic ruler and the bottom end of the front telescopic ruler, and the longitudinal slope adjustment beam is bolted to both the rear and front telescopic rulers, and the front and rear tilt angles of the longitudinal slope adjustment beam are consistent with the predetermined longitudinal slope. The cross slope adjustment structure is: The cross slope adjustment structure includes a sliding block with an inclined sliding positioning groove at the bottom of the sliding block facing downwards. The sliding block is slidably engaged with the longitudinal slope adjustment beam through the inclined sliding positioning groove. A protractor structure is fixedly connected to the top of the sliding block. An inclined scraper is bolted to the origin of the protractor structure. The angle of the scraper tilting left and right is consistent with the predetermined cross slope.

2. The multi-slope control device for the construction of sawtooth-shaped street ditches according to claim 1, characterized in that: An upper roller is installed on the inner surface of the top wall of the sliding positioning groove, and the upper roller rolls and presses against the top surface of the side stone; a right roller is installed on the inner wall of the right side of the sliding positioning groove, and the right roller rolls and presses against the right surface of the side stone; a left roller is installed on the inner wall of the left side of the sliding positioning groove, and the left roller rolls and presses against the left surface of the side stone.

3. The multi-slope control device for sawtooth-shaped street ditch construction according to claim 2, characterized in that: The scraper has an L-shaped cross-section.

4. A method for controlling a multi-faceted slope using the multi-faceted slope control device described in claim 3 during the construction of a sawtooth-shaped street ditch, characterized in that... Follow these steps: During the construction of sawtooth-shaped street ditches, when storing the multi-faceted slope control device, the front telescopic ruler, the rear telescopic ruler, and the longitudinal slope adjustment beam are removed from the E-shaped frame. The first step is to install the E-shaped frame. This step is carried out before the installation of the boulders. Before this step, the boulders have been installed in place and their top surfaces are horizontal. The road structure layer and concrete subbase under the boulders have been completed. The mortar leveling layer is laid on the concrete subbase to control its longitudinal and transverse slopes. This step involves attaching the sliding positioning groove to the curbstone. At this point, the curbstone is sandwiched between the left and right rollers, and the upper roller presses against the top surface of the curbstone, ensuring that the top edge of the E-shaped frame is horizontal and the left, right, and middle vertical edges are all vertical. The direction of progress during construction is the downhill direction of the road slope. The second step is to install the longitudinal slope adjustment structure so that the slope of the longitudinal slope adjustment beam is the same as the predetermined longitudinal slope. The third step is to install the cross slope adjustment structure so that the angle of the scraper tilting left and right is consistent with the predetermined cross slope. The fourth step is to push the sliding block from back to front, so that the sliding block drives the protractor structure and scraper to move towards the front longitudinal slope adjustment beam until the sliding block contacts the front telescopic ruler, thus ending the fourth step. During the forward movement, the scraper removes excess material from the top surface of the mortar leveling layer, and controls the longitudinal and transverse slopes of the top surface of the mortar leveling layer to the predetermined longitudinal and transverse slopes through a single movement. After the fourth step is completed, the slope control of the mortar leveling layer of the road section is completed. The sliding block is pushed backward to the rear end of the longitudinal slope adjustment beam and to the rear telescopic ruler. Then, the E-shaped frame is pushed forward along the top of the side stone, and the distance of the E-shaped frame in the front-back direction is increased. Then, the fourth step is repeated until the travel of the E-shaped frame covers the entire length of the predetermined road section, and the slope control of the mortar leveling layer of this road section is completed.

5. The multi-faceted slope control method according to claim 4, characterized in that: The second step is as follows: the predetermined longitudinal slope is 0.N%, where N is a positive real number; the length of the E-shaped frame in the front-to-back direction is L millimeters; where L is a positive real number; the height difference = L × 0.N% millimeters; Connect the front telescopic ruler downwards on the left front vertical side and the rear telescopic ruler downwards on the left rear vertical side. Adjust the front telescopic ruler to its maximum downward extension. Adjust the rear telescopic ruler downwards to its maximum extension, then retract it upwards by L×0.N% millimeters. Use fixing bolts to fix the rear end of the longitudinal slope adjustment beam to the connection hole at the lower end of the rear telescopic ruler. Use fixing bolts to fix the front end of the longitudinal slope adjustment beam to the connection hole at the lower end of the front telescopic ruler. At this point, the slope of the longitudinal slope adjustment beam is fixed to the predetermined longitudinal slope.

6. The multi-faceted slope control method according to claim 5, characterized in that: The third step is as follows: slide the sliding block from top to bottom onto the longitudinal slope adjustment beam through its inclined sliding positioning groove, and push the sliding block to the rear end of the longitudinal slope adjustment beam to abut against the rear telescopic ruler; loosen the bolts between the scraper and the protractor structure, and adjust the left and right tilt angle of the scraper to match the predetermined cross slope according to the reading of the protractor structure, and then tighten the bolts to fix the tilt angle of the scraper; at this time, the lower surface of the scraper is lower than the top surface of the constructed mortar leveling layer and is consistent with the design height of the top surface of the mortar leveling layer.

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