A cross slope detection device for highway construction

Abstract

The present invention relates to the technical field of highway measuring equipment, and in particular to a cross slope detection equipment for highway construction, comprising a fixed frame and universal wheels fixedly connected to both sides of the bottom of the fixed frame, a measuring mechanism is arranged on the rear side of the fixed frame, a top frame is fixedly connected to the top of the fixed frame, a handrail is fixedly connected to the top of the outer wall of the top frame, an outlet is opened at the bottom of the fixed frame, a support plate is arranged above the outlet, a pair of top plates are fixedly connected to the inner side of the fixed frame and above the support plate, upper springs are fixedly connected between the top plate and the support plate, a top rod is slidably connected to the inner side of the top frame, and the bottom of the top rod passes through the top of the fixed frame, a cross plate is fixedly connected to the bottom of the top rod, and a vertical plate for squeezing the support plate to slide downward is fixedly connected to the bottom of the cross plate. The present invention can automatically clean up the mud adhered to the bottom of the support plate during detection, and there is no need for detection personnel to clean up, which saves time and effort, thereby avoiding affecting the accuracy of subsequent detection, and greatly improving the convenience performance of the device.

Description

Technical Field

[0001] The invention relates to the technical field of highway measurement equipment, and in particular to a cross slope detection device for highway construction. Background Art

[0002] Cross slope refers to the transverse slope of each component of the road width and roadside strip, and refers to the transverse inclination of the road surface, dividing strip, sidewalk and green belt. The cross slope detection equipment is mainly used in highway construction to check the transverse inclination of the road surface after highway construction. Generally, a cross slope will be designed for the road surface, dividing strip, sidewalk, etc. during urban planning and road design. Generally, the cross slope of the base carriageway should be 1.5-2.5%, and the cross slope of the base sidewalk should be 1.5-2.5%. The cross slope of the sidewalk should adopt a single-sided slope with a cross slope of 1% to 2%. The usual requirement is less than or equal to 3%. The design of the cross slope is generally for rainy day drainage considerations.

[0003] In the prior art, there is a highway construction cross-slope detector with publication number CN116026290A. In order to avoid the phenomenon that the casters fall into potholes and cause large errors in the detection data, the inspector needs to press the pressure rod to drive the sliding rod to move downward along the fixed frame. The pressure rod drives the spring part to compress downward. At the same time, the inspector pulls the handle to drive the fixed frame and the casters to rise upward until the double-fork plate replaces the casters and is close to the road surface to support the cross-slope detector. At this time, the U-shaped fork arm components at the left and right ends of the double-fork plate respectively replace the two casters and are close to the road surface, forming the same cross-slope inclination angle as that of the road surface in this area, reducing the impact of the pothole area on the supporting components, and improving the detection accuracy of the cross-slope detector.

[0004] Although the above-mentioned device can improve the accuracy of the detection equipment in detecting potholes and slopes, there are still some defects in the actual detection process. Since the slopes are mostly made of freshly excavated soil or directly excavated, if the slopes are not exposed to the sun for a period of time, the surface soil will have a certain viscosity. Therefore, when using supporting components during the measurement process, it is inevitable that some soil will adhere to the supporting components. However, the detection equipment lacks a self-cleaning structure, and then after each detection is completed, in order not to affect the accuracy of the next detection, the detection personnel need to clean it up, which is not only time-consuming and labor-intensive, but also greatly reduces the convenience of the device.

[0005] Therefore, a cross slope detection device for highway construction is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a cross slope detection device for highway construction.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a cross slope detection device for highway construction, comprising a fixed frame, and universal wheels fixedly connected to both sides of the bottom of the fixed frame, a measuring mechanism is provided on the rear side of the fixed frame, a top frame is fixedly connected to the top of the fixed frame, a handrail is fixedly connected to the top of the outer wall of the top frame, an outlet is opened at the bottom of the fixed frame, a support plate is provided above the outlet, a pair of top plates are fixedly connected to the inner side of the fixed frame and located above the support plate, an upper spring is fixedly connected between the top plate and the support plate, and the inner side of the top frame slides A push rod is movably connected to the push rod, and the bottom of the push rod passes through the top of the fixed frame, the bottom of the push rod is fixedly connected to a horizontal plate, the bottom of the horizontal plate is fixedly connected to a vertical plate for squeezing the support plate to slide downward, and there is a distance between the vertical plate and the support plate, a pair of scrapers are slidably connected to the inner side of the fixed frame and below the support plate, and the scrapers are fixedly connected to an upper right-angle block on the side away from the scrapers, and lower right-angle blocks are provided next to the upper right-angle blocks, a telescopic structure is provided between the lower right-angle block and the horizontal plate, and a limiting mechanism for limiting the position of the push rod is provided on the inner side of the top frame.

[0008] In the above technical scheme, further, the telescopic structure includes a telescopic cylinder, which is fixedly connected to the side wall of the horizontal plate, and the lower right-angle block is fixedly connected to an L-shaped plate on the side away from the lower right-angle block, one of the L-shaped plates is fixedly connected to the top of the telescopic plate, and the telescopic plate is slidably connected to the inner side of the telescopic cylinder, a pair of connecting rods are fixedly connected between the L-shaped plates, a plurality of telescopic springs are fixedly connected to the top end of the telescopic cylinder, and the lower right-angle block is fitted with the inclined surface of the upper right-angle block, movable grooves are provided on both sides of the outer wall of the fixed frame, and a limit plate for limiting the downward sliding of the L-shaped plate is fixedly connected to the bottom of the movable groove.

[0009] In the above technical solution, further, a positioning plate for limiting is fixedly connected to the top of the telescopic plate, and the bottoms of the plurality of telescopic springs are fixedly connected to the top of the positioning plate.

[0010] In the above technical solution, further, the outer wall of the fixed frame is fixedly connected to the outer frame on both sides of the lower right-angle block, and the top of the upper right-angle block and the corresponding position to the outer frame are fixedly connected to the side plates, and a pair of lower springs are fixedly connected between the side plates and the inner side of the outer frame.

[0011] In the above technical solution, further, both sides of the inner side of the fixing frame are fixedly connected with limiting blocks for limiting the sliding position of the support plate, and the top of the support plate is provided with a slot adapted to the vertical plate.

[0012] In the above technical scheme, further, the limiting mechanism includes a limiting right-angle block, the side wall of the top rod is provided with an inward groove, the limiting right-angle block is slidably connected to the inner side of the groove, a limiting spring is fixedly connected between the inner side of the groove and the side wall of the limiting right-angle block, a fixed right-angle block is fixedly connected to the bottom end of the inner wall of the top frame, and a sliding right-angle block is provided on the inner side of the top frame and below the fixed right-angle block, and the fixed right-angle block and the sliding right-angle block are symmetrically arranged, and the inclined surfaces of the fixed right-angle block and the limiting right-angle block are arranged on the side close to each other.

[0013] In the above technical solution, further, a sliding groove is provided on the inner wall of the top frame and next to the sliding right-angle block, a sliding block is fixedly connected to the side wall of the sliding right-angle block, and the sliding block is slidably connected to the inner side of the sliding groove, a reset spring is fixedly connected between the top end of the sliding groove and the top of the sliding block, and there is a distance between the sliding right-angle block and the fixed right-angle block, and a tension spring is fixedly connected between the top end of the top frame and the top of the top rod.

[0014] In the above technical solution, further, a push rod is fixedly connected to the top end of the side wall of the push rod, and a push groove is provided on the outer wall of the top frame at a position corresponding to the push rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can automatically clean the dirt adhered to the bottom of the support plate during detection, without the need for detection personnel to clean it, saving time and effort, thereby avoiding affecting the accuracy of subsequent detection, and greatly improving the convenience performance of the device.

[0017] 2. The present invention can also quickly limit the position where the support plate is extended, without the need for the inspector to push it for a long time, making it convenient for the inspector to place the detection device on the horizontal slope, observe and record the detection values, and improve the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a rear perspective structural schematic diagram of the detection device of the present invention;

[0019] Figure 2 It is a schematic diagram of a partially cutaway three-dimensional structure of the front side of the detection device of the present invention;

[0020] Figure 3 The appended Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 4 The appended Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0022] Figure 5 It is a schematic diagram of a three-dimensional structure of a fixed frame of the present invention in full cross-section from the side;

[0023] Figure 6 The appended Figure 5 A schematic diagram of the partially enlarged structure at C in the middle;

[0024] Figure 7 It is a schematic diagram of the overall appearance structure of the telescopic structure, the support plate and the horizontal plate of the present invention;

[0025] Figure 8 It is a schematic diagram of the overall appearance structure of the telescopic plate, L-shaped plate and lower right-angle block of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention in full cross-section from the front.

[0027] In the figure: 1. fixed frame; 2. universal wheel; 3. measuring mechanism; 4. top frame; 5. handrail; 6. outlet; 7. support plate; 8. top plate; 9. upper spring; 10. push rod; 11. horizontal plate; 12. vertical plate; 13. scraper; 14. upper right-angle block; 15. lower right-angle block; 16. telescopic cylinder; 17. L-shaped plate; 18. telescopic plate; 19. connecting rod; 20. telescopic spring; 21. moving groove; 22. limit plate; 23. positioning plate; 24. outer frame; 25. lower spring; 26. limit block; 27. slot; 28. side plate; 29. ​​groove; 30. limit right-angle block; 31. limit spring; 32. fixed right-angle block; 33. sliding right-angle block; 34. slide groove; 35. sliding block; 36. reset spring; 37. push rod; 38. push groove; 39. tension spring. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] like Figure 1-Figure 9The cross slope detection equipment for highway construction shown in the figure comprises a fixed frame 1, and universal wheels 2 fixedly connected to both sides of the bottom of the fixed frame 1, a measuring mechanism 3 is arranged on the rear side of the fixed frame 1, a top frame 4 is fixedly connected to the top of the fixed frame 1, a handrail 5 is fixedly connected to the top of the outer wall of the top frame 4, an outlet 6 is opened at the bottom of the fixed frame 1, a support plate 7 is arranged above the outlet 6, a pair of top plates 8 are fixedly connected to the inner side of the fixed frame 1 and located above the support plate 7, an upper spring 9 is fixedly connected between the top plate 8 and the support plate 7, a top rod 10 is slidably connected to the inner side of the top frame 4, and the bottom of the top rod 10 passes through the top of the fixed frame 1, a cross plate 11 is fixedly connected to the bottom of the top rod 10, a vertical plate 12 for squeezing the support plate 7 to slide downward is fixedly connected to the bottom of the cross plate 11, and the vertical plate 12 There is a distance between the support plate 7, a pair of scrapers 13 are connected to the inner side of the fixed frame 1 and are located below the support plate 7 and are slidably connected laterally, and an upper right-angle block 14 is fixedly connected to the side away from the scraper 13, and a lower right-angle block 15 is provided next to the upper right-angle block 14, and a telescopic structure is provided between the lower right-angle block 15 and the horizontal plate 11, and a limiting mechanism for limiting the position of the top rod 10 is provided on the inner side of the top frame 4, and an outer frame 24 is fixedly connected to the outer wall of the fixed frame 1 and is located on both sides of the lower right-angle block 15, and a side plate 28 is fixedly connected to the top of the upper right-angle block 14 and at a position corresponding to the outer frame 24, and a pair of lower springs 25 are fixedly connected between the side plate 28 and the inner side of the outer frame 24, and the arrangement of the outer frame 24 and the lower spring 25 facilitates the pulling of the upper right-angle block 14 and the scraper 13 to reset;

[0031] The telescopic structure includes a telescopic cylinder 16, which is fixedly connected to the side wall of the horizontal plate 11, and an L-shaped plate 17 is fixedly connected to the side away from the lower right-angle block 15, a telescopic plate 18 is fixedly connected to the top of one of the L-shaped plates 17, and the telescopic plate 18 is slidably connected to the inner side of the telescopic cylinder 16, a pair of connecting rods 19 are fixedly connected between the L-shaped plates 17, a plurality of telescopic springs 20 are fixedly connected to the top of the telescopic cylinder 16, and the lower right-angle block 15 fits the inclined surface of the upper right-angle block 14, and moving grooves 21 are opened on both sides of the outer wall of the fixed frame 1. A limit plate 22 for limiting the downward sliding of the L-shaped plate 17 is fixedly connected to the bottom of the moving groove 21. By setting the limit plate 22, the downward sliding position of the lower right-angle block 15 can be limited to prevent the lower right-angle block 15 from contacting the ground. A positioning plate 23 for limiting is fixedly connected to the top of the telescopic plate 18. The positioning plate 23 can limit the sliding position of the telescopic plate 18 to prevent the telescopic plate 18 from sliding out of the telescopic cylinder 16 and affecting the normal operation of the device. The bottoms of the plurality of telescopic springs 20 are fixedly connected to the top of the positioning plate 23.

[0032] When the detection device needs to detect the potholes on the horizontal slope, the push rod 37 can be pushed downward to drive the top rod 10 to slide downward, and the tension spring 39 can be stretched at the same time, thereby driving the horizontal plate 11 and the telescopic cylinder 16 at the bottom of the top rod 10 to slide downward, thereby driving the telescopic plate 18, the connecting rod 19, the L-shaped plate 17 and the lower right-angle block 15 to move downward, and then gradually release the squeezing of the inclined surface of the upper right-angle block 14, so that under the elastic force of the lower spring 25, the upper right-angle block 14 and the scraper 13 are gradually pulled to move to both sides and reset. When the scraper 13 is completely moved away from under the support plate 7, the vertical plate 12 will be inserted into the slot 27, thereby pushing the support plate 7 to slide downward and out of the outlet 6, and gradually stretching the upper spring 9, and then through the continued downward movement of the telescopic cylinder 16, the lower right-angle block 15 moves to the limit plate 22, thereby limiting the lower right-angle block 15 and the L-shaped plate 17 from continuing to slide downward;

[0033] At this time, the cross plate 11 and the telescopic cylinder 16 are continuously pushed downward by the push rod 10, thereby gradually compressing the telescopic spring 20 to ensure that the lower right-angle block 15 does not contact the horizontal slope ground. Subsequently, the support plate 7 lifts the universal wheel 2 and supports it on the horizontal slope under the push of the vertical plate 12, and limits the position of the push rod 10 through the limit mechanism. Then, the horizontal slope can be detected by the measuring mechanism 3. Finally, after the measurement is completed, the above operation can be repeated in reverse to reset. In this process, when the vertical plate 12 is removed from the support plate 7, the lower right-angle block 15 will move to the bottom of the upper right-angle block 14. Since the lower right-angle block 15 can only slide up and down under the restriction of the telescopic cylinder 16, the lower right-angle block 15 will gradually squeeze the upper right-angle block 14 to slide to the closer side, thereby driving the scraper 13 to move toward the middle, so as to scrape off the mud adhered to the bottom of the support plate 7. There is no need for the detection personnel to clean it, which saves time and effort, thereby avoiding affecting the accuracy of subsequent detection, and greatly improving the convenience performance of the device.

[0034] In order to improve the stability of the device during operation, limiting blocks 26 for limiting the sliding position of the support plate 7 are fixedly connected on both sides of the inner side of the fixed frame 1. Through the setting of the limiting blocks 26, the upward sliding position of the support plate 7 can be limited to prevent the support plate 7 from sliding out of the contact position with the scraper 13, thereby ensuring the complete scraping and cleaning of the soil. A slot 27 compatible with the vertical plate 12 is opened on the top of the support plate 7. Through the setting of the slot 27, the vertical plate 12 can be inserted into the slot 27, thereby limiting the moving position of the support plate 7 to prevent the support plate 7 from moving randomly when the vertical plate 12 pushes the support plate 7 to move, thereby affecting the stability of the device during operation.

[0035] In order to quickly limit the extended position of the support plate 7, the limiting mechanism includes a limiting right-angle block 30, a recessed groove 29 is provided on the side wall of the top rod 10, the limiting right-angle block 30 is slidably connected to the inner side of the groove 29, a limiting spring 31 is fixedly connected between the inner side of the groove 29 and the side wall of the limiting right-angle block 30, a fixed right-angle block 32 is fixedly connected to the bottom end of the inner wall of the top frame 4, and a sliding right-angle block 33 is provided on the inner side of the top frame 4 and below the fixed right-angle block 32, and the fixed right-angle block 32 and the sliding right-angle block 33 are symmetrically arranged, and the inclined surfaces of the fixed right-angle block 32 and the limiting right-angle block 30 are arranged on the side close to each other;

[0036] A slide groove 34 is provided on the inner wall of the top frame 4 and beside the sliding right-angle block 33. A sliding block 35 is fixedly connected to the side wall of the sliding right-angle block 33, and the sliding block 35 is slidably connected to the inner side of the slide groove 34. A return spring 36 is fixedly connected between the top end of the slide groove 34 and the top of the sliding block 35. There is a distance between the sliding right-angle block 33 and the fixed right-angle block 32. A tension spring 39 is fixedly connected between the top end of the top frame 4 and the top of the top rod 10.

[0037] When it is necessary to extend the support plate 7 to detect the potholes and slopes, the inspector first pushes the push rod 37 to drive the top rod 10 to slide downward, thereby driving the telescopic structure and the vertical plate 12 to move, and opening the scraper 13 to move the support plate 7 out to support the detection device on the ground. At the same time, the tension spring 39 will be gradually stretched downward, and then the limiting right-angle block 30 will slide to the side of the fixed right-angle block 32. Since the position of the fixed right-angle block 32 is fixed, the inclined surface of the fixed right-angle block 32 squeezes the inclined surface of the limiting right-angle block 30, so that the limiting right-angle block 30 will slide inward into the concave The limit spring 31 is compressed in the groove 29, and then when the limit right-angle block 30 slides away from the fixed right-angle block 32, the squeeze on the limit right-angle block 30 is released, and then the limit right-angle block 30 is pushed out of the groove 29 under the elastic force of the limit spring 31, and then the limit right-angle block 30 is inserted at the bottom of the fixed right-angle block 32, thereby limiting the position of the push rod 10, and realizing the rapid limitation of the extended position of the support plate 7, without the need for the inspector to push for a long time, which is convenient for the inspector to place the detection device on the horizontal slope, observe and record the detection values, and improve the convenience performance of the device;

[0038] Finally, after the detection is completed, when it is necessary to retract the push rod 10, first continue to press the push rod 37 downward to drive the push rod 10 to slide downward, and then drive the limiting right-angle block 30 to move downward. At this time, the sliding right-angle block 33 is located at the lowest end of the slide slot 34, so it cannot slide downward. Therefore, when the limiting right-angle block 30 slides downward, the sliding right-angle block 33 will squeeze the limiting right-angle block 30 to slide into the groove 29 and compress the limiting spring 31. Then, when the limiting right-angle block 30 slides out of the top of the sliding right-angle block 33, the limiting right-angle block 30 will be inserted into the bottom of the sliding right-angle block 33 under the elastic force of the limiting spring 31, and then the push rod 37 can be released, and then the push rod 10 is driven to slide upward for reset under the pulling force of the tension spring 39. At the same time, the limiting right-angle block 30 will press against the inclined surface of the sliding right-angle block 33, pushing the sliding right-angle block 33 to slide upward, while driving the sliding block 35 to slide in the sliding groove 34 and gradually compressing the reset spring 36. Subsequently, when the sliding right-angle block 33 slides below the fixed right-angle block 32, the fixed right-angle block 32 will press against the sliding right-angle block 33 so that the sliding right-angle block 33 cannot move upward, and then, under the action of the tension spring 39 pulling the push rod 10, the sliding right-angle block 33 squeezes the limiting right-angle block 30 to slide into the groove 29 until the limiting right-angle block 30 completes moving out of the sliding right-angle block 33 and moves away from the fixed right-angle block 32 for reset. At the same time, the sliding right-angle block 33 loses the pulling force of the limiting right-angle block 30 and is reset under the push of the reset spring 36.

[0039] In order to facilitate the inspectors to quickly push the push rod 10 to adjust the position of the support plate 7, a push rod 37 is fixedly connected to the top of the side wall of the push rod 10, and a push groove 38 is opened on the outer wall of the top frame 4 at a position corresponding to the push rod 37. The setting of the push rod 37 makes it convenient for the inspectors to quickly push the push rod 10. At the same time, the setting of the push groove 38 can avoid hindering the normal up and down sliding of the push rod 37, affecting the normal extension and retraction of the support plate 7, and improving the convenience of the device.

[0040] The basic principles, main features and advantages of the present invention are shown and described above.

[0041] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A cross slope detection device for highway construction, comprising a fixed frame (1), and universal wheels (2) fixedly connected to both sides of the bottom of the fixed frame (1), a measuring mechanism (3) is provided on the rear side of the fixed frame (1), and the characteristics are: The top of the fixed frame (1) is fixedly connected to a top frame (4), the top of the outer wall of the top frame (4) is fixedly connected to a handrail (5), the bottom of the fixed frame (1) is provided with an outlet (6), a support plate (7) is provided above the outlet (6), a pair of top plates (8) are fixedly connected inside the fixed frame (1) and above the support plate (7), upper springs (9) are fixedly connected between the top plates (8) and the support plates (7), a top rod (10) is slidably connected inside the top frame (4), and the bottom of the top rod (10) passes through the top of the fixed frame (1), and the bottom of the top rod (10) is fixedly connected to a horizontal plate (11) ), the bottom of the horizontal plate (11) is fixedly connected with a vertical plate (12) for squeezing the support plate (7) to slide downward, and there is a distance between the vertical plate (12) and the support plate (7), the inner side of the fixed frame (1) and located below the support plate (7) are connected with a pair of scrapers (13) for transverse sliding, and the scrapers (13) are fixedly connected with an upper right-angle block (14) on the side away from each other, and a lower right-angle block (15) is provided next to the upper right-angle block (14), and a telescopic structure is provided between the lower right-angle block (15) and the horizontal plate (11), and a limiting mechanism for limiting the position of the top rod (10) is provided on the inner side of the top frame (4); The telescopic structure comprises a telescopic cylinder (16), the telescopic cylinder (16) is fixedly connected to the side wall of the horizontal plate (11), and the lower right-angle block (15) is fixedly connected to an L-shaped plate (17) on the side away from the lower right-angle block (15), a telescopic plate (18) is fixedly connected to the top of one of the L-shaped plates (17), and the telescopic plate (18) is slidably connected to the inner side of the telescopic cylinder (16), a pair of connecting rods (19) are fixedly connected between the L-shaped plates (17), a plurality of telescopic springs (20) are fixedly connected to the top of the telescopic cylinder (16), and the lower right-angle block (15) is fitted with the inclined surface of the upper right-angle block (14), and the outer wall of the fixed frame (1) is provided with moving grooves (21) on both sides, and the bottom of the moving groove (21) is fixedly connected to a limit plate (22) for limiting the downward sliding of the L-shaped plate (17); The top of the telescopic plate (18) is fixedly connected to a positioning plate (23) for limiting position, the bottoms of a plurality of the telescopic springs (20) are fixedly connected to the top of the positioning plate (23), the top of the side wall of the top rod (10) is fixedly connected to a push rod (37), and a push groove (38) is provided on the outer wall of the top frame (4) at a position corresponding to the push rod (37).

2. A cross slope detection device for highway construction according to claim 1, characterized in that: The outer wall of the fixed frame (1) and both sides of the lower right-angle block (15) are fixedly connected to an outer frame (24), and the top of the upper right-angle block (14) and the position corresponding to the outer frame (24) are fixedly connected to a side plate (28), and a pair of lower springs (25) are fixedly connected between the side plate (28) and the inner side of the outer frame (24).

3. The cross slope detection device for highway construction according to claim 1 is characterized in that: Limiting blocks (26) for limiting the sliding position of the support plate (7) are fixedly connected to both sides of the inner side of the fixed frame (1), and a slot (27) adapted to the vertical plate (12) is provided on the top of the support plate (7).

4. The cross slope detection device for highway construction according to claim 1, characterized in that: The limiting mechanism comprises a limiting right-angle block (30), a side wall of the top rod (10) is provided with an inwardly sunken groove (29), the limiting right-angle block (30) is slidably connected to the inner side of the groove (29), a limiting spring (31) is fixedly connected between the inner side of the groove (29) and the side wall of the limiting right-angle block (30), a fixed right-angle block (32) is fixedly connected to the bottom end of the inner wall of the top frame (4), and a sliding right-angle block (33) is provided on the inner side of the top frame (4) and below the fixed right-angle block (32), and the fixed right-angle block (32) and the sliding right-angle block (33) are symmetrically arranged, and the inclined surfaces of the fixed right-angle block (32) and the limiting right-angle block (30) are arranged on the side close to each other.

5. A cross slope detection device for highway construction according to claim 4, characterized in that: A sliding groove (34) is provided on the inner wall of the top frame (4) and beside the sliding right-angle block (33); a sliding block (35) is fixedly connected to the side wall of the sliding right-angle block (33); and the sliding block (35) is slidably connected to the inner side of the sliding groove (34); a return spring (36) is fixedly connected between the top end of the sliding groove (34) and the top of the sliding block (35); and there is a distance between the sliding right-angle block (33) and the fixed right-angle block (32); and a tension spring (39) is fixedly connected between the top end of the top frame (4) and the top of the top rod (10).

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