A detection method for highway construction

Abstract

The invention discloses a detection method for highway construction, which relates to the technical field of mortar fluidity detection, and comprises the following steps: raw material sampling, equipment cleaning, a detection component is arranged in a shell, a counterweight cone and a cylinder are wiped clean with a wet cloth, preparation before mortar detection, a mortar mixture is poured into the cylinder, a smoothing component is arranged above the cylinder, a vibrating component is connected between the smoothing plate and the shell through a transmission component, a test cone is debugged and tested, the counterweight cone is adjusted to the tip contacting the mortar surface, the smoothing plate is arranged to rotate, excess mortar raw materials are rotated out, so that the mortar on the surface of the cylinder is flat and uniform, the vibrating component is driven to move by the transmission component, and various places on the surface of the cylinder are knocked to make the cylinder vibrate, eliminate internal bubbles, make the mortar in the cylinder more compact, improve the detection accuracy, do not need manual operation, improve the uniformity of patting and smoothing operations, and ensure the effect of detection quality.

Description

Technical Field

[0001] The invention relates to the technical field of mortar fluidity detection, in particular to a detection method for highway construction. Background Art

[0002] Highway refers to a public road between cities, between urban and rural areas, and between villages that can be used for driving cars and has been accepted and approved by the transportation authority, including highways that have been built and approved by the transportation authority. During the construction of the highway, it is necessary to conduct multiple tests on the highway to ensure the safety of the road surface. In concrete pavements, it is necessary to test the quality of concrete raw materials, among which fluidity is one of the important indicators of the working performance of concrete mortar. By testing the fluidity, the consistency, viscosity and plasticity of the concrete mortar can be understood, so as to evaluate its construction performance and ensure the quality of highway construction. For example, a mortar and putty construction detection device disclosed in the publication number CN214374081U can be used. On the one hand, the detection device can detect the viscosity of the mortar, so as to detect the strength and quality of the mortar, and ensure that the mortar and putty meet the construction standards during construction. On the other hand, the setting of the scale plate and the scale pointer can quickly and easily record the detection data of the mortar and putty, which not only makes the detection more concise but also greatly improves the work efficiency.

[0003] However, when testing the fluidity of concrete mortar, the mortar surface is prone to ups and downs. At the same time, when adding raw materials, bubbles are likely to appear inside the mortar, affecting the detection accuracy. Therefore, manual smoothing and beating to remove bubbles are required. However, manual operation is greatly affected by experience and has low uniformity. Summary of the invention

[0004] The purpose of the present invention is to provide a detection method for highway construction, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a detection method for highway construction, comprising the following steps:

[0006] Randomly extract mortar samples from the construction site or raw material warehouse, and then mix them to obtain a mortar mixture, and prepare a testing device, which includes a base, and a cylinder is fixedly installed on the surface of the base;

[0007] The base is located above the cylinder and is fixedly mounted with a shell through a support plate. A detection component is arranged in the shell. The detection component includes a counterweight cone. The counterweight cone and the cylinder are wiped clean with a wet cloth to ensure that there are no impurities and moisture residues.

[0008] The mortar mixture is poured into the cylinder, a smoothing component is arranged above the cylinder, the smoothing component is connected to the shell, the smoothing component includes a smoothing plate, a vibrating component is connected between the smoothing plate and the shell through a transmission component, the mortar surface is smoothed by the smoothing component and the vibrating component, and bubbles in the mortar are removed;

[0009] Adjust the counterweight cone until the tip contacts the mortar surface, ensure that the counterweight cone is perpendicular to the mortar surface, then drop the counterweight cone in a free fall manner, record the depth of the cone hitting the mortar, and judge the fluidity of the mortar.

[0010] Optionally, the smoothing component includes a rotating shaft 1, a driving assembly is provided on the lower surface of the shell, the end of the rotating shaft 1 is fixedly connected to the driving part of the driving assembly, the surface of the rotating shaft 1 is fixedly connected to a rotating plate, the vibrating component is provided on the rotating plate, the smoothing plate is fixedly connected to the surface of the rotating shaft 1, and the lower surface of the rotating shaft 1 is flush with the barrel mouth of the cylinder.

[0011] Optionally, the vibration component includes a movable plate, the upper surface of which is fixedly connected to an L-shaped plate, the surface of the rotating plate is provided with a sliding groove for the L-shaped plate to extend into, the L-shaped plate is slidably connected to the rotating plate via the sliding groove, a spring 1 is fixedly connected between the surface of the L-shaped plate and the inner wall of the sliding groove, the bottom of the movable plate is fixedly connected to a connecting plate, a plurality of knocking rods are evenly distributed on the surface of the connecting plate, the ends of the knocking rods are made of rubber, the number of the L-shaped plate and the spring 1 are both two, and they are symmetrically arranged.

[0012] Optionally, the transmission component includes:

[0013] A rotating rod, a through hole for the rotating rod to pass through and be slidably connected to the rotating plate is provided on the surface of the rotating plate, a gear 1 and a cam are fixedly connected to both ends of the rotating rod, two symmetrically distributed connecting blocks are fixedly connected to the surface of the moving plate, a roller is connected between the two connecting blocks for common rotation, and the roller abuts against the surface of the cam;

[0014] An inner gear ring is located between the shell and the cylinder, a plurality of support rods are fixedly connected between the inner gear ring and the shell, and the inner gear ring is meshed with the gear one.

[0015] Optionally, the detection component includes:

[0016] Rotating shaft 2 and rotating shaft 3, the rotating shaft 2 and the rotating shaft 3 are both rotatably connected to the inner wall of the shell, and the ends of the rotating shaft 2 and the rotating shaft 3 extend out of the shell, the surfaces of the rotating shaft 2 and the rotating shaft 3 located outside the shell are respectively fixedly connected with gear 2 and gear 3, the gear 2 and the gear 3 are meshed, the surface of the shell is fixedly mounted with motor 2 through a mounting plate, and the output end of the motor 2 is fixedly connected to the end of the rotating shaft 2;

[0017] The surfaces of the second and third rotating shafts located in the shell are both provided with rotating drums, the surfaces of the two rotating drums are both wound with pull ropes, the surface of the counterweight cone is fixedly connected to the end of the pull rope, the inner wall of the shell is provided with an opening for the pull rope to pass through, and a separation assembly is provided between the rotating drum and the second or third rotating shaft;

[0018] A limit assembly is arranged in the shell to prevent the pull rope from deviating and reduce friction during the falling process.

[0019] Optionally, the disengagement component comprises:

[0020] The rotating drum comprises a baffle and a rotating ring, wherein the baffle is fixedly connected to the surface of the rotating ring, the rotating ring is fixedly connected to the surface of the rotating shaft 2 or the rotating shaft 3, the inner wall of the rotating ring is provided with a groove for the block to extend into, and the surface of the rotating shaft 2 is provided with a slot for the block to extend into;

[0021] A driving plate, the driving plate is slidably connected to the inner wall of the groove, an electric push rod is fixedly installed on the inner wall of the groove, the output end of the electric push rod is fixedly connected to the driving plate, a spring 2 is fixedly connected between the driving plate and the clamping block, the clamping block includes an inclined portion, and the number of the disengagement components is two, and they are symmetrically distributed.

[0022] Optionally, the limiting assembly includes a ring, which is fixedly installed in the shell through a bracket, and the ring is sleeved on the surface of the pull rope, and a plurality of balls are embedded in the inner wall of the ring and the inner wall of the opening.

[0023] Optionally, the driving assembly includes a motor 1, which is fixedly mounted on the lower surface of the shell, and the output end of the motor 1 is fixedly connected to the end of the rotating shaft 1.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention rotates by itself during the rotation of the rotating rod and the cam around the rotating shaft 1, and drives the L-shaped plate and the movable plate to move back and forth through the action of the spring 1, so that the knocking rod knocks on various parts of the surface of the cylinder during the reciprocating movement, causing uniform vibration at various parts, eliminating internal bubbles, reducing gaps, increasing the compactness of the mortar raw materials, and improving the detection accuracy. At the same time, no manual operation is required, which is simple and convenient and not affected by operating experience.

[0026] 2. The present invention drives the rotating plate and the smearing plate to rotate by rotating the rotating shaft. The rotation of the smearing plate can push the raw materials at a high place in the cylinder to a lower place, and push out the excess raw materials, thereby ensuring the flatness of the raw materials and eliminating the need for manual operation, thereby improving the accuracy of subsequent fluidity detection.

[0027] 3. The present invention provides a collar and embeds balls in the collar and the opening, which can guide the pull rope when the counterweight cone falls to avoid deviation. At the same time, it converts sliding friction into rolling friction, reduces the resistance of the counterweight cone when it falls, and ensures the accuracy of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a flow chart of the method of the present invention;

[0029] Figure 2 It is an axonometric diagram of the overall structure of the present invention;

[0030] Figure 3 The cross-sectional view of the overall structure of the present invention Figure 1 ;

[0031] Figure 4 For the present invention Figure 3 A magnified view of the structure at center A;

[0032] Figure 5 The cross-sectional view of the overall structure of the present invention Figure 2 ;

[0033] Figure 6 For the present invention Figure 5 A magnified view of the structure at B in the middle;

[0034] Figure 7 The cross-sectional view of the overall structure of the present invention Figure 3 ;

[0035] Figure 8 is a cross-sectional view of the drum structure of the present invention;

[0036] Fig. 9 For the present invention Figure 8 A magnified view of the structure at center C.

[0037] In the figure: 1, base; 2, cylinder; 3, support plate; 4, shell; 5, motor 1; 6, shaft 1; 7, rotating plate; 71, slide groove; 8, smear plate; 9, rotating rod; 10, gear 1; 11, cam; 12, moving plate; 13, L-shaped plate; 14, spring 1; 15, roller; 16, connecting plate; 17, knock rod; 18, inner gear ring; 19, support rod; 20, shaft 2; 2001, slot; 21, shaft 3; 22, motor 2; 23, gear 2; 24, gear 3; 25, rotating drum; 251, baffle; 252, swivel; 26, pull rope; 27, counterweight cone; 28, collar; 29, bracket; 30, ball; 31, groove; 32, electric push rod; 33, drive plate; 34, spring 2; 35, block. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] For example, see Figures 1 to 9 , this implementation provides a detection method for highway construction as follows:

[0040] Randomly extract mortar samples from the construction site or raw material warehouse, and then mix them to obtain a mortar mixture, and prepare a testing device, which includes a base 1, and a cylinder 2 is fixedly installed on the surface of the base 1;

[0041] The base 1 is located above the cylinder 2 and is fixedly mounted with a housing 4 through a support plate 3. A detection component is arranged in the housing 4. The detection component includes a counterweight cone 27. The counterweight cone 27 and the cylinder 2 are wiped clean with a wet cloth to ensure that there are no impurities and moisture residues.

[0042] The mortar mixture is poured into the cylinder 2. A smoothing component is provided above the cylinder 2. The smoothing component is connected to the shell 4. The smoothing component includes a smoothing plate 8. The smoothing plate 8 can be provided with an arc surface according to the rotation direction to rotate out the excess mortar. A vibrating component is connected between the smoothing plate 8 and the shell 4 through a transmission component. The mortar surface is smoothed by the smoothing component and the vibrating component, and bubbles in the mortar are removed.

[0043] Adjust the counterweight cone 27 until the tip contacts the mortar surface, ensure that the counterweight cone 27 is perpendicular to the mortar surface, and then drop the counterweight cone 27 in a free fall manner. The fluidity of the mortar can be determined based on the depth of the counterweight cone 27 into the mortar.

[0044] In this embodiment: before testing the concrete mortar, the smoothing component is started so that the smoothing plate 8 can rotate on the surface of the cylinder 2, and the excess mortar raw materials are rotated out, so that the mortar on the surface of the cylinder 2 is flat and uniform. When the smoothing component moves, it drives the transmission component to move, and the transmission component drives the vibration component to move, and knocks on various parts of the surface of the cylinder 2, so that the cylinder 2 vibrates. The bubbles inside are eliminated by the vibration of the cylinder 2, so that the mortar in the cylinder 2 is more compact, and the detection accuracy is improved. At the same time, it cooperates with the continuously rotating smoothing plate 8 to further reduce bubbles, and there is no need for manual operation, so as to improve the uniformity of the beating and smoothing operations and ensure the detection quality. In actual operation, the mortar mixture can be added in small amounts and multiple times until it is flush with the mouth of the cylinder 2, and then the counterweight cone 27 is adjusted to the tip to contact the mortar surface, and then falls in a free fall manner. The fluidity of the mortar is judged according to the depth of the mortar. Through the fluidity test, the strength, durability and other properties of the concrete mortar after hardening can be predicted, providing a basis for the quality assessment of highway construction.

[0045] Furthermore, the smoothing component includes a rotating shaft 6, a driving assembly is arranged on the lower surface of the shell 4, the end of the rotating shaft 6 is fixedly connected to the driving part of the driving assembly, a rotating plate 7 is fixedly connected to the surface of the rotating shaft 6, a vibration component is arranged on the rotating plate 7, a smoothing plate 8 is fixedly connected to the surface of the rotating shaft 6, the lower surface of the rotating shaft 6 is flush with the barrel mouth of the cylinder 2, and the rotating shaft 6 and the cylinder 2 are arranged concentrically.

[0046] More specifically, after the mortar mixture is poured into the cylinder 2, the driving assembly drives the rotating shaft 6 to rotate, and the rotation of the rotating shaft drives the rotating plate 7 and the trowel plate 8 to rotate. Through the rotation of the trowel plate 8, the raw materials at high places in the cylinder 2 can be pushed down, and the excess raw materials can be pushed out, thereby ensuring the flatness of the raw materials and improving the accuracy of subsequent fluidity detection.

[0047] Furthermore, the vibration component includes a moving plate 12, the upper surface of which is fixedly connected with an L-shaped plate 13, the surface of the rotating plate 7 is provided with a slide groove 71 for the L-shaped plate 13 to extend into, the L-shaped plate 13 is slidably connected to the rotating plate 7 through the slide groove 71, a spring 14 is fixedly connected between the surface of the L-shaped plate 13 and the inner wall of the slide groove 71, the bottom of the moving plate 12 is fixedly connected with a connecting plate 16, a plurality of knocking rods 17 are evenly distributed on the surface of the connecting plate 16, the ends of the knocking rods 17 are made of rubber, the number of the L-shaped plates 13 and the spring 14 are both two, and they are symmetrically arranged, through the two symmetrically arranged L-shaped plates 13 and spring 14, the moving plate 12 is subjected to more uniform force during the reciprocating movement, the method is prevented from shaking, the stability during movement is improved, thereby driving the knocking rod 17 to move more stably.

[0048] More specifically, the rotating plate 7 rotates to drive the transmission component to move, and the transmission component moves to drive the transmission component to move, and the L-shaped plate 13 is driven to slide back and forth in the slide groove 71 through the action of the spring 14, and the reciprocating movement of the L-shaped plate 13 drives the movable plate 12 to move back and forth, and the reciprocating movement of the movable plate 12 drives the knocking rod 17 to move back and forth. During the reciprocating movement of the knocking rod 17, the surface of the cylinder 2 is knocked to vibrate, thereby eliminating internal bubbles, reducing gaps, improving the compactness of the mortar raw materials, and ensuring the detection accuracy. In addition, since the rotating plate 7 rotates around the rotating shaft 6, it drives the L-shaped plate 13 and the movable plate 12 to rotate around the rotating shaft 6. Through the action of the transmission component, the movable plate 12 reciprocates while moving around the rotating shaft 6, thereby driving the knocking rod 17 to knock on various parts of the surface of the cylinder 2, causing it to vibrate evenly at various parts, further improving the defoaming quality, and facilitating subsequent detection.

[0049] Furthermore, the transmission component includes:

[0050] The surfaces of the rotating rod 9 and the rotating plate 7 are provided with a through hole for the rotating rod 9 to pass through and be slidably connected thereto. The two ends of the rotating rod 9 are respectively fixedly connected to a gear 10 and a cam 11. The surface of the moving plate 12 is fixedly connected to two symmetrically distributed connecting blocks. A roller 15 is connected between the two connecting blocks for common rotation. The roller 15 abuts against the surface of the cam 11.

[0051] The inner gear ring 18 is located between the shell 4 and the cylinder 2. A plurality of support rods 19 are fixedly connected between the inner gear ring 18 and the shell 4. The inner gear ring is meshed with the gear 10.

[0052] More specifically, the rotating plate 7 rotates around the rotating shaft 6, which drives the rotating rod 9 to rotate around the rotating shaft 6. The rotating rod 9 rotates around the rotating shaft 6, which drives the gear 10 and the cam 11 to rotate around the rotating shaft 6. During the movement of the gear 10, the meshing relationship with the inner gear ring 18 drives the gear 10 to rotate around the rotating shaft 6. The self-rotation of the gear 10 drives the rotating rod 9 and the cam 11 to rotate around the rotating shaft 6. The cam 11 rotates, which causes pressure on the roller 15. The spring 14 drives the L-shaped plate 13 to slide back and forth in the slide groove 71, thereby achieving the reciprocating movement of the movable plate 12.

[0053] Embodiment 2: Based on the above embodiment, the highway construction detection method further adopts a detection component, and the detection component includes:

[0054] The second rotating shaft 20 and the third rotating shaft 21 are both rotatably connected to the inner wall of the housing 4, and the ends of the second rotating shaft 20 and the third rotating shaft 21 extend out of the housing 4. The surfaces of the second rotating shaft 20 and the third rotating shaft 21 located outside the housing 4 are respectively fixedly connected with the second gear 23 and the third gear 24, and the second gear 23 and the third gear 24 are meshed. The surface of the housing 4 is fixedly mounted with the second motor 22 through a mounting plate, and the output end of the second motor 22 is fixedly connected to the end of the second rotating shaft 20;

[0055] The surfaces of the second rotating shaft 20 and the third rotating shaft 21 located in the housing 4 are both provided with a rotating drum 25, the surfaces of the two rotating drums 25 are both wound with a pull rope 26, the surface of the counterweight cone 27 is fixedly connected to the end of the pull rope 26, the inner wall of the housing 4 is provided with an opening for the pull rope 26 to pass through, and a separation component is provided between the rotating drum 25 and the second rotating shaft 20 or the third rotating shaft 21;

[0056] The limit assembly is arranged in the housing 4 to prevent the pull rope 26 from deflecting and reduce the friction during the falling process. Since the counterweight cone 27 is kept balanced during the falling process, a limit sleeve is usually arranged to limit it. However, since the friction between the limit sleeve and the pull rope 26 is large, a large resistance is generated on the counterweight cone 27, thereby affecting the accuracy of the fluidity detection. By setting the limit assembly, the friction mode between the pull rope 26 is changed to reduce the resistance and improve the detection accuracy.

[0057] In this embodiment, when the raw materials in the cylinder 2 are smoothed and defoamed, the motor 22 is started to drive the shaft 20 to rotate, and the shaft 20 rotates to drive the gear 23 to rotate, and the gear 23 rotates and drives the shaft 3 21 to rotate through the meshing relationship with the gear 3 24, and the shaft 20 and the shaft 3 21 rotate, and the drum 25 arranged on the surface is driven to rotate through the action of the disengagement component, and the pull rope 26 is unwound, so that the counterweight cone 27 moves downward under the action of gravity until the tip of the counterweight cone 27 contacts the mortar surface, and then the motor 22 is turned off, and then the connection between the drum 25 and the shaft 20 and the shaft 3 21 is released through the disengagement component, so that the counterweight cone 27 falls freely to hit the mortar mixture, and the fluidity of the mortar is judged according to the depth of the mortar, so as to realize highway construction detection, and by setting two counterweight cones 27, when reading the result, the average value between the two data can be removed, so as to further improve the accuracy of the detection data.

[0058] Furthermore, the limiting assembly includes a collar 28 , which is fixedly mounted in the housing 4 via a bracket 29 , and the collar 28 is sleeved on the surface of the pull rope 26 , and a plurality of balls 30 are embedded in the inner wall of the collar 28 and the inner wall of the opening.

[0059] More specifically, by providing a collar 28 and embedding balls 30 in the collar 28 and the opening, the pull rope 26 can be guided when the counterweight cone 27 falls to avoid deviation. At the same time, the sliding friction is converted into rolling friction, reducing resistance and ensuring the accuracy of the detection data.

[0060] Furthermore, the driving assembly includes a motor 5, which is fixedly mounted on the lower surface of the housing 4, and an output end of the motor 5 is fixedly connected to an end of a rotating shaft 6.

[0061] More specifically, by starting the motor 5 and driving the rotating shaft 6 to rotate at a uniform speed, the rotating plate 7 can rotate at a uniform speed, thereby ensuring the leveling and defoaming quality of the mortar raw materials.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection method for highway construction, characterized in that: The following steps are involved: Step S1: sampling raw materials, randomly selecting mortar samples, mixing them evenly to obtain a mortar mixture, and preparing a testing device, the testing device comprising a base (1), a cylinder (2) being fixedly mounted on the surface of the base (1); Step S2: Cleaning the equipment: a housing (4) is fixedly mounted on the base (1) and located above the cylinder (2) via a support plate (3); a detection component is arranged in the housing (4); the detection component includes a counterweight cone (27); the counterweight cone (27) and the cylinder (2) are wiped clean with a wet cloth; Step S3: Preparation before mortar testing: pour the mortar mixture into the cylinder (2); a smoothing component is provided above the cylinder (2); the smoothing component is connected to the shell (4); the smoothing component includes a smoothing plate (8); a vibrating component is connected between the smoothing plate (8) and the shell (4) via a transmission component; the mortar surface is smoothed by the smoothing component and the vibrating component, and bubbles in the mortar are removed; Step S4: commissioning and testing the test cone, adjusting the counterweight cone (27) until the tip contacts the mortar surface, ensuring that the counterweight cone (27) is perpendicular to the mortar surface, dropping the counterweight cone (27) in a free-falling manner, recording the depth of the cone hitting the mortar, and judging the fluidity of the mortar; The smoothing component comprises a rotating shaft 1 (6), a driving assembly is arranged on the lower surface of the housing (4), and an end of the rotating shaft 1 (6) is fixedly connected to a driving part of the driving assembly; A rotating plate (7) is fixedly connected to the surface of the rotating shaft (6), the vibrating component is arranged on the rotating plate (7), the smear plate (8) is fixedly connected to the surface of the rotating shaft (6), and the lower surface of the rotating shaft (6) is flush with the barrel mouth of the barrel (2); The vibration component comprises a movable plate (12), the upper surface of the movable plate (12) is fixedly connected to an L-shaped plate (13), the surface of the rotating plate (7) is provided with a slide groove (71) for the L-shaped plate (13) to extend into, the L-shaped plate (13) is slidably connected to the rotating plate (7) via the slide groove (71), a spring (14) is fixedly connected between the surface of the L-shaped plate (13) and the inner wall of the slide groove (71), the bottom of the movable plate (12) is fixedly connected to a connecting plate (16), a plurality of knocking rods (17) are evenly distributed on the surface of the connecting plate (16), the ends of the knocking rods (17) are made of rubber, the number of the L-shaped plate (13) and the number of the spring (14) are both two, and they are symmetrically arranged; The transmission components include: A rotating rod (9), a through hole for the rotating rod (9) to pass through and be slidably connected to the rotating plate (7), two ends of the rotating rod (9) are respectively fixedly connected to a gear 1 (10) and a cam (11), the surface of the movable plate (12) is fixedly connected to two symmetrically distributed connecting blocks, a roller (15) is connected between the two connecting blocks for common rotation, and the roller (15) abuts against the surface of the cam (11); an inner gear ring (18), the inner gear ring (18) being located between the housing (4) and the cylinder (2), a plurality of support rods (19) being fixedly connected between the inner gear ring (18) and the housing (4), and the inner gear ring being meshed with the gear 1 (10); The detection component comprises: A second rotating shaft (20) and a third rotating shaft (21), wherein the second rotating shaft (20) and the third rotating shaft (21) are both rotatably connected to the inner wall of the housing (4) and their ends extend out of the housing (4); the surfaces of the second rotating shaft (20) and the third rotating shaft (21) located outside the housing (4) are respectively fixedly connected to a second gear (23) and a third gear (24); the second gear (23) and the third gear (24) are meshed with each other; a second motor (22) is fixedly mounted on the surface of the housing (4) via a mounting plate; the output end of the second motor (22) is fixedly connected to the end of the second rotating shaft (20); The surfaces of the second rotating shaft (20) and the third rotating shaft (21) located inside the housing (4) are both provided with a rotating drum (25), the surfaces of the two rotating drums (25) are both wound with a pull rope (26), the surface of the counterweight cone (27) is fixedly connected to the end of the pull rope (26), the inner wall of the housing (4) is provided with an opening for the pull rope (26) to pass through, and a separation component is provided between the rotating drum (25) and the second rotating shaft (20) or the third rotating shaft (21); A limit assembly, the limit assembly being arranged in the housing (4) and being used to prevent the pull rope (26) from deflecting and to reduce friction during the falling process.

2. The highway construction detection method according to claim 1, characterized in that: The disengagement assembly comprises: The rotating drum comprises a baffle (251) and a rotating ring (252), the baffle (251) being fixedly connected to the surface of the rotating ring (252), the rotating ring (252) being fixedly connected to the surface of the second rotating shaft (20) or the third rotating shaft (21), the inner wall of the rotating ring (252) being provided with a groove (31) for the block (35) to extend into, and the surface of the second rotating shaft (20) being provided with a slot (2001) for the block (35) to extend into; A driving plate (33) is slidably connected to the inner wall of the groove (31); an electric push rod (32) is fixedly mounted on the inner wall of the groove (31); an output end of the electric push rod (32) is fixedly connected to the driving plate (33).

3. The highway construction detection method according to claim 2, characterized in that: A second spring (34) is fixedly connected between the drive plate (33) and the clamping block (35); the clamping block (35) comprises an inclined portion; and the number of the disengagement components is two and they are symmetrically distributed.

4. The highway construction detection method according to claim 2, characterized in that: The limiting assembly comprises a collar (28), the collar (28) being fixedly mounted in the housing (4) via a bracket (29), the collar (28) being sleeved on the surface of the pull rope (26), and a plurality of balls (30) being embedded in the inner wall of the collar (28) and the inner wall of the opening.

5. The highway construction detection method according to claim 1, characterized in that: The driving assembly comprises a motor 1 (5), wherein the motor 1 (5) is fixedly mounted on the lower surface of the housing (4), and an output end of the motor 1 (5) is fixedly connected to an end of the rotating shaft 1 (6).

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