Device and method for detecting compressive property of urban road pavement

Abstract

The invention discloses an urban road pavement compressive property detection device and method, and relates to the field of pavement detection.The urban road pavement compressive property detection device comprises a detection table, the top of the detection table is connected with two supporting plates, the tops of the two supporting plates are jointly connected with a top plate, the bottom of the top plate is connected with a hydraulic cylinder, and the bottom of the hydraulic cylinder is connected with a pushing plate; the bottom of the push plate is connected with a pressure sensor. A hydraulic cylinder is used for pushing a pushing plate, the elastic force of a spring is larger than the pulling force of a pulling plate on a placement table, when the placement table abuts against a stopping block, the placement table is located at the bottom of a detection head, the pushing plate continues to be pushed, and at the moment, the placement table cannot move under the action of the stopping block; and on the contrary, the spring is reset due to the elastic force of the spring, at the moment, the hydraulic cylinder continues to ascend, the placing table can be pushed forwards, the placing table is made to be far away from the detection head, and the safety of placing the road surface sample can be effectively improved.

Description

Technical Field

[0001] The invention relates to the field of road surface detection, and in particular to a device and method for detecting the compressive resistance of urban road surfaces. Background Art

[0002] Urban roads are roads that connect various areas of the city, provide transportation and pedestrian use within the city, facilitate residents' lives, work, cultural and entertainment activities, and are connected to roads outside the city to carry external traffic. After the construction of each road is completed, the road's compressive strength must be evaluated to determine whether the road meets the standards for commissioning. Due to the large area of ​​the road, the compressive strength of roads in different terrains and regions will vary. Therefore, the core drilling sampling method is used to test the compressive strength of the road surface.

[0003] At present, there are the following problems when testing the compressive performance of urban road pavement:

[0004] 1. When placing road pavement samples, the placement point is below the hydraulic cylinder. If the hydraulic cylinder loses control, the detection head will be pressed down, which will affect the safety of the staff;

[0005] 2. When testing the compressive performance of road pavement samples, there needs to be space to place the road pavement samples. Therefore, there is a distance between the road pavement samples and the testing head. The downward pressure of the testing head is controlled only by the hydraulic cylinder. The stroke of the testing head is relatively long, which will affect the testing efficiency of the road pavement samples.

[0006] Therefore, it is necessary to invent a device and method for detecting the compressive resistance of urban road pavement to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a device and method for detecting the compressive resistance of urban road pavement to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device and method for detecting the compressive resistance of urban road pavement, comprising a detection platform, the top of the detection platform is connected to two support plates, the tops of the two support plates are commonly connected to a top plate, the bottom of the top plate is connected to a hydraulic cylinder, the bottom of the hydraulic cylinder is connected to a push plate, the bottom of the push plate is connected to a pressure sensor, the bottom of the pressure sensor is connected to a detection head, the top of the detection platform is provided with a placing table, the top of the placing table is provided with a protective positioning assembly, and the bottom of the push plate is provided with a translation assembly and a lifting assembly.

[0009] Preferably, the protective positioning assembly includes a mounting block, a first T-shaped slider is connected to the bottom of the mounting block, a first T-shaped slide groove corresponding to the first T-shaped slider is opened on the top of the placing table, a protective tube is connected to the top of the mounting block, a cavity is opened in the mounting block, and a bidirectional screw rod is connected in the cavity, two moving blocks are connected to the outer wall of the bidirectional screw rod, and the tops of the two moving blocks are connected to a pull rod, a strip opening corresponding to the pull rod is opened on the top of the mounting block, the top of the pull rod is connected to a connecting block, and a push rod is connected to the side wall of the connecting block, through holes corresponding to the push rod are opened on the front and rear sides of the protective tube, the other end of the push rod is connected to a positioning plate, the front end of the bidirectional screw rod is connected to a rotating block, and the front side of the mounting block is connected to two handles.

[0010] Preferably, a blocking rod corresponding to the first T-shaped sliding block is rotatably provided on the front side of the placement table.

[0011] Preferably, the translation assembly includes two extrusion rods connected to the bottom of the pushing plate, the other end of the extrusion rod is connected to a pull plate, the bottom of the pull plate is connected to a second T-shaped slider, the top of the detection table is provided with a second T-shaped slide corresponding to the second T-shaped slider, the side wall of the pull plate is provided with a limiting rod, one end of the limiting rod is connected to a third T-shaped slider, the side wall of the pull plate is provided with a third T-shaped slide corresponding to the third T-shaped slider, the rear side of the placement table is provided with a limiting groove corresponding to the limiting rod, the outer wall of the limiting rod is connected to an annular plate, the side wall of the annular plate is connected to a spring, the other end of the spring is connected to the rear side of the placement table, and the top of the detection table is connected with a blocking block corresponding to the placement table.

[0012] Preferably, both left and right sides of the push plate are connected with sliding rods, and both side walls of the two support plates are provided with sliding openings corresponding to the sliding rods.

[0013] Preferably, the lifting assembly includes two first racks connected to the bottom of the pushing plate, lifting blocks are provided on the left and right sides of the placing table, the side walls of the lifting blocks are connected to the second rack, the top of the detection table is provided with a moving opening corresponding to the first rack and the second rack, the top of the detection table is connected to a fixed frame, a gear is connected to the fixed frame, the gear is meshed with the second rack, the left and right sides of the placing table are connected to a fourth T-shaped slider, and the side walls of the lifting block are provided with a fourth T-shaped groove corresponding to the fourth T-shaped slider.

[0014] Preferably, the bottom of the lifting block is connected with an insertion rod, and the top of the detection platform is provided with a slot corresponding to the insertion rod.

[0015] A method for detecting the compressive performance of urban road pavement comprises the following steps:

[0016] S1: By placing the road pavement sample to be tested in the protective cylinder, rotating the rotating block, the rotating block drives the bidirectional screw to rotate, the bidirectional screw drives the two moving blocks to move, the moving block pulls the pull rod, the pull rod pulls the connecting block, the connecting block pulls the push rod, and the push rod pulls the positioning plate, the two positioning plates can be used to position and protect the road pavement sample in the protective cylinder, the first T-shaped slider at the bottom of the installation block is slid into the first T-shaped slide groove on the placement table, and the installation block is installed, so that the protective cylinder and the road pavement sample can be placed;

[0017] S2: By using a hydraulic cylinder to push the push plate, the push plate pushes the extrusion rod, the extrusion rod pulls the pull plate, the pull plate pulls the limit rod and the spring. Since the elastic force of the spring is greater than the pulling force of the pull plate on the placement table, the placement table can be pulled by the spring. When the placement table is against the blocking block, the placement table is at the bottom of the detection head. The push plate continues to be pushed. At this time, the placement table will not move due to the action of the blocking block, so that the elastic force of the spring is less than the pulling force of the pull plate on the placement table. The pull plate pulls the limit rod and the spring, causing the spring to deform.

[0018] S3: When the placement table is moved inward, the fourth T-shaped slider on the placement table extends into the fourth T-shaped slide groove on the lifting block, and the two first racks are pushed by the pushing plate, so that the first racks gradually mesh with the gears, and the first racks continue to move downward, so that the gears can rotate, so that the gears move the second racks upward, and the second racks pull the lifting block, and the lifting block pulls the placement table to lift the placement table, so that the protective tube and the road surface sample on the placement table can be brought closer to the detection head;

[0019] S4: Use the pressure sensor and the detection head to detect the road surface sample in the protective cylinder. After the detection is completed, the hydraulic cylinder is lifted up, the second rack pulls the placement table to reset, and the spring is also reset due to its own elastic force. At this time, the hydraulic cylinder is continued to rise to push the placement table forward, so that the placement table is away from the detection head;

[0020] S5: Remove the entire mounting block and the protective tube, and repeat the above steps to test subsequent road pavement samples.

[0021] Technical effects and advantages of the present invention:

[0022] 1. By using a hydraulic cylinder to push the pushing plate, the pushing plate pushes the extrusion rod, the extrusion rod pulls the pulling plate, and the pulling plate pulls the limiting rod and the spring. Because the elastic force of the spring is greater than the pulling force of the pulling plate on the placing table, the placing table can be pulled by the spring. When the placing table is against the blocking block, the placing table is at the bottom of the detection head. Continue to push the pushing plate. At this time, the placing table will not move due to the action of the blocking block, so that the elastic force of the spring is less than the pulling force of the pulling plate on the placing table. The pulling plate pulls the limiting rod and the spring, causing the spring to deform. Conversely, the spring is reset due to its own elastic force. At this time, continue to raise the hydraulic cylinder to push the placing table forward, so that the placing table is away from the detection head, which can effectively improve the safety of placing road pavement samples.

[0023] 2. By using the push plate to push the two first racks, the first racks gradually mesh with the gears, and the first racks continue to move downward, which can make the gears rotate, so that the gears move the second racks upward, and the second racks pull the lifting block, and the lifting block pulls the placement table to lift the placement table, so that the protective tube and the road pavement sample on the placement table can be brought closer to the detection head, which can shorten the travel distance between the detection head and the road pavement sample, and can facilitate and quickly detect the road pavement sample, thereby improving the detection efficiency of the road pavement sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A side view structural schematic diagram of;

[0026] Figure 3 For the present invention Figure 1 AA section structural diagram;

[0027] Figure 4 For the present invention Figure 1 BB-direction cross-sectional structural diagram;

[0028] Figure 5 It is a schematic diagram of the side cross-sectional structure of the protective positioning assembly of the present invention;

[0029] Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure of part C;

[0030] Figure 7 For the present invention Figure 1 A schematic diagram of the enlarged structure of part D;

[0031] Figure 8 For the present invention Figure 4 Schematic diagram of the enlarged structure of part E.

[0032] In the figure: 1, detection table; 2, support plate; 3, top plate; 4, hydraulic cylinder; 5, push plate; 6, pressure sensor; 7, protection positioning assembly; 71, mounting block; 72, first T-shaped slider; 73, protection tube; 74, two-way screw; 75, moving block; 76, pull rod; 77, connecting block; 78, push rod; 79, positioning plate; 710, rotating block; 711, handle; 8, translation assembly; 81, extrusion rod; 82, pull plate; 83, second T-shaped slider; 84, limit rod; 85, third T-shaped slider; 86, annular plate; 87, spring; 88, blocking block; 9, lifting assembly; 91, first rack; 92, lifting block; 93, second rack; 94, fixed frame; 95, gear; 96, fourth T-shaped slider; 10, detection head; 11, placement table; 12, blocking rod; 13, slide rod; 14, insertion rod. DETAILED DESCRIPTION

[0033] 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.

[0034] The present invention provides Figure 1-8 The device and method for detecting the compressive resistance of urban road pavement shown in the figure include a detection platform 1, the top of the detection platform 1 is connected to two support plates 2, the tops of the two support plates 2 are commonly connected to a top plate 3, the bottom of the top plate 3 is connected to a hydraulic cylinder 4, the bottom of the hydraulic cylinder 4 is connected to a push plate 5, the bottom of the push plate 5 is connected to a pressure sensor 6, the bottom of the pressure sensor 6 is connected to a detection head 10, a placing table 11 is arranged on the top of the detection platform 1, a protective positioning component 7 is arranged on the top of the placing table 11, and a translation component 8 and a lifting component 9 are arranged on the bottom of the push plate 5.

[0035] The protective positioning assembly 7 includes a mounting block 71, the bottom of which is connected to a first T-shaped slider 72, the top of the placement table 11 is provided with a first T-shaped slide groove corresponding to the first T-shaped slider 72, the top of the mounting block 71 is connected to a protective tube 73, a cavity is provided in the mounting block 71, and a bidirectional screw rod 74 is connected in the cavity, the outer wall of the bidirectional screw rod 74 is connected to two moving blocks 75, the tops of the two moving blocks 75 are connected to a pull rod 76, a strip opening corresponding to the pull rod 76 is provided on the top of the mounting block 71, the top of the pull rod 76 is connected to a connecting block 77, the side wall of the connecting block 77 is connected to a push rod 78, the front and rear sides of the protective tube 73 are provided with through holes corresponding to the push rod 78, the other end of the push rod 78 is connected to a positioning plate 79, the front end of the bidirectional screw rod 74 is connected to a rotating block 710, and the front side of the mounting block 71 is connected to two handles 711.

[0036] A blocking rod 12 corresponding to the first T-shaped sliding block 72 is rotatably disposed on the front side of the placement table 11 .

[0037] The translation assembly 8 includes two extrusion rods 81 connected to the bottom of the push plate 5, the other end of the extrusion rod 81 is connected to a pull plate 82, the bottom of the pull plate 82 is connected to a second T-shaped slider 83, the top of the detection platform 1 is provided with a second T-shaped slide groove corresponding to the second T-shaped slider 83, the side wall of the pull plate 82 is provided with a limiting rod 84, one end of the limiting rod 84 is connected to a third T-shaped slider 85, the side wall of the pull plate 82 is provided with a third T-shaped slide groove corresponding to the third T-shaped slider 85, a limiting groove corresponding to the limiting rod 84 is provided on the rear side of the placement platform 11, the outer wall of the limiting rod 84 is connected to an annular plate 86, the side wall of the annular plate 86 is connected to a spring 87, the other end of the spring 87 is connected to the rear side of the placement platform 11, and the top of the detection platform 1 is connected to a blocking block 88 corresponding to the placement platform 11.

[0038] The left and right sides of the push plate 5 are both connected with sliding rods 13 , and the side walls of the two support plates 2 are both provided with sliding openings corresponding to the sliding rods 13 .

[0039] The lifting assembly 9 includes two first racks 91 connected to the bottom of the pushing plate 5, and lifting blocks 92 are provided on the left and right sides of the placing table 11. The side walls of the lifting blocks 92 are connected to the second racks 93. The top of the testing table 1 is provided with a moving opening corresponding to the first racks 91 and the second racks 93. The top of the testing table 1 is connected to a fixing frame 94, and a gear 95 is connected inside the fixing frame 94. The gear 95 is meshed with the second rack 93. The left and right sides of the placing table 11 are connected to a fourth T-shaped slider 96, and the side walls of the lifting block 92 are provided with a fourth T-shaped slide groove corresponding to the fourth T-shaped slider 96.

[0040] The bottom of the lifting block 92 is connected with an insertion rod 14 , and the top of the testing platform 1 is provided with a slot corresponding to the insertion rod 14 .

[0041] A method for detecting the compressive performance of urban road pavement comprises the following steps:

[0042] S1: By placing the road pavement sample to be tested in the protective cylinder 73, by rotating the rotating block 710, the rotating block 710 drives the bidirectional screw rod 74 to rotate, the bidirectional screw rod 74 drives the two moving blocks 75 to move, the moving block 75 pulls the pull rod 76, the pull rod 76 pulls the connecting block 77, the connecting block 77 pulls the push rod 78, and the push rod 78 pulls the positioning plate 79, the two positioning plates 79 can be used to position and protect the road pavement sample in the protective cylinder 73, the first T-shaped slider 72 at the bottom of the mounting block 71 is slid into the first T-shaped slide groove on the placement table 11, and the mounting block 71 is installed, so that the protective cylinder 73 and the road pavement sample can be placed;

[0043] S2: The hydraulic cylinder 4 is used to push the push plate 5, the push plate 5 pushes the squeeze rod 81, the squeeze rod 81 pulls the pull plate 82, the pull plate 82 pulls the limit rod 84 and the spring 87, because the elastic force of the spring 87 is greater than the pulling force of the pull plate 82 on the placement table 11, the placement table 11 can be pulled by the spring 87, when the placement table 11 is against the blocking block 88, the placement table 11 is at the bottom of the detection head 10, and the push plate 5 is continued to be pushed. At this time, the placement table 11 will not move due to the action of the blocking block 88, so that the elastic force of the spring 87 is less than the pulling force of the pull plate 82 on the placement table 11, and the pull plate 82 pulls the limit rod 84 and the spring 87, causing the spring 87 to deform;

[0044] S3: When the placement table 11 is moved inward, the fourth T-shaped slide block 96 on the placement table 11 extends into the fourth T-shaped slide groove on the lifting block 92, and the two first racks 91 are pushed by the pushing plate 5, so that the first racks 91 gradually mesh with the gear 95, and the first rack 91 continues to move downward, which can make the gear 95 rotate, so that the gear 95 moves the second rack 93 upward, and the second rack 93 pulls the lifting block 92, and the lifting block 92 pulls the placement table 11, and the placement table 11 is lifted, so that the protective tube 73 on the placement table 11 and the road surface sample and the detection head 10 are close to each other;

[0045] S4: Use the pressure sensor 6 and the detection head 10 to detect the road surface sample in the protective cylinder 73. After the detection is completed, the hydraulic cylinder 4 is lifted up, the second rack 93 pulls the placement table 11 to reset, and the spring 87 is also reset due to its own elastic force. At this time, the hydraulic cylinder 4 is continued to rise, and the placement table 11 can be pushed forward, so that the placement table 11 is away from the detection head 10;

[0046] S5: Remove the mounting block 71 and the protective tube 73 entirely, and repeat the above steps to test subsequent road pavement samples.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for testing the compressive performance of urban road pavement, comprising a testing platform, characterized in that: The top of the detection platform is connected to two support plates, the tops of the two support plates are commonly connected to a top plate, the bottom of the top plate is connected to a hydraulic cylinder, the bottom of the hydraulic cylinder is connected to a push plate, the bottom of the push plate is connected to a pressure sensor, the bottom of the pressure sensor is connected to a detection head, a placing table is arranged on the top of the detection platform, a protective positioning assembly is arranged on the top of the placing table, and a translation assembly and a lifting assembly are arranged on the bottom of the push plate.

2. The device for detecting the compressive strength of urban road pavement according to claim 1, characterized in that: The protective positioning assembly includes a mounting block, a first T-shaped slider is connected to the bottom of the mounting block, a first T-shaped slide groove corresponding to the first T-shaped slider is opened on the top of the placing table, a protective tube is connected to the top of the mounting block, a cavity is opened in the mounting block, and a bidirectional screw rod is connected in the cavity, two moving blocks are connected to the outer wall of the bidirectional screw rod, and the tops of the two moving blocks are connected to a pull rod, a strip opening corresponding to the pull rod is opened on the top of the mounting block, the top of the pull rod is connected to a connecting block, and a push rod is connected to the side wall of the connecting block, through holes corresponding to the push rod are opened on the front and rear sides of the protective tube, the other end of the push rod is connected to a positioning plate, the front end of the bidirectional screw rod is connected to a rotating block, and the front side of the mounting block is connected to two handles.

3. The urban road pavement compression resistance detection device according to claim 2, characterized in that: A blocking rod corresponding to the first T-shaped sliding block is rotatably arranged on the front side of the placing table.

4. The urban road pavement compression resistance detection device according to claim 3 is characterized in that: The translation assembly includes two extrusion rods connected to the bottom of the pushing plate, the other end of the extrusion rod is connected to a pull plate, the bottom of the pull plate is connected to a second T-shaped slider, the top of the detection table is provided with a second T-shaped slide groove corresponding to the second T-shaped slider, the side wall of the pull plate is provided with a limiting rod, one end of the limiting rod is connected to the third T-shaped slider, the side wall of the pull plate is provided with a third T-shaped slide groove corresponding to the third T-shaped slider, the rear side of the placement table is provided with a limiting groove corresponding to the limiting rod, the outer wall of the limiting rod is connected to an annular plate, the side wall of the annular plate is connected to a spring, the other end of the spring is connected to the rear side of the placement table, and the top of the detection table is connected with a blocking block corresponding to the placement table.

5. The urban road pavement compression resistance detection device according to claim 4, characterized in that: The left and right sides of the push plate are both connected with sliding rods, and the side walls of the two support plates are both provided with sliding openings corresponding to the sliding rods.

6. The device for detecting the compressive performance of urban road pavement according to claim 5, characterized in that: The lifting assembly includes two first racks connected to the bottom of the pushing plate, lifting blocks are provided on the left and right sides of the placing platform, the side walls of the lifting blocks are connected to the second rack, the top of the detection platform is provided with a moving opening corresponding to the first rack and the second rack, the top of the detection platform is connected to a fixed frame, a gear is connected to the fixed frame, the gear is meshed with the second rack, the left and right sides of the placing platform are connected to a fourth T-shaped slider, and the side walls of the lifting block are provided with a fourth T-shaped slide groove corresponding to the fourth T-shaped slider.

7. The device for detecting the compressive performance of urban road pavement according to claim 6, characterized in that: The bottom of the lifting block is connected with an insertion rod, and the top of the detection platform is provided with a slot corresponding to the insertion rod.

8. A method for detecting the compressive resistance of urban road pavement according to claims 1-7, characterized in that: The steps include: S1: By placing the road pavement sample to be tested in the protective cylinder, rotating the rotating block, the rotating block drives the bidirectional screw to rotate, the bidirectional screw drives the two moving blocks to move, the moving block pulls the pull rod, the pull rod pulls the connecting block, the connecting block pulls the push rod, and the push rod pulls the positioning plate, the two positioning plates can be used to position and protect the road pavement sample in the protective cylinder, the first T-shaped slider at the bottom of the installation block is slid into the first T-shaped slide groove on the placement table, and the installation block is installed, so that the protective cylinder and the road pavement sample can be placed; S2: By using a hydraulic cylinder to push the push plate, the push plate pushes the extrusion rod, the extrusion rod pulls the pull plate, the pull plate pulls the limit rod and the spring. Since the elastic force of the spring is greater than the pulling force of the pull plate on the placement table, the placement table can be pulled by the spring. When the placement table is against the blocking block, the placement table is at the bottom of the detection head. The push plate continues to be pushed. At this time, the placement table will not move due to the action of the blocking block, so that the elastic force of the spring is less than the pulling force of the pull plate on the placement table. The pull plate pulls the limit rod and the spring, causing the spring to deform. S3: When the placement table is moved inward, the fourth T-shaped slider on the placement table extends into the fourth T-shaped slide groove on the lifting block, and the two first racks are pushed by the pushing plate, so that the first racks gradually mesh with the gears, and the first racks continue to move downward, so that the gears can rotate, so that the gears move the second racks upward, and the second racks pull the lifting block, and the lifting block pulls the placement table to lift the placement table, so that the protective tube and the road surface sample on the placement table can be brought closer to the detection head; S4: Use the pressure sensor and the detection head to detect the road surface sample in the protective cylinder. After the detection is completed, the hydraulic cylinder is lifted up, the second rack pulls the placement table to reset, and the spring is also reset due to its own elastic force. At this time, the hydraulic cylinder is continued to rise to push the placement table forward, so that the placement table is away from the detection head; S5: Remove the entire mounting block and the protective tube, and repeat the above steps to test subsequent road pavement samples.

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