Ground permeability detection device for road maintenance

Abstract

The invention relates to the technical field of detection devices, in particular to a road maintenance ground permeability detection device which comprises a detection support, an inner enclosure, an outer enclosure and a check ring. The inner enclosure is arranged in the vertical direction and located at the lower end of the detection support, and a detection space is defined among the inner enclosure, the detection support and the ground. The outer enclosure is rotationally installed at the lower end of the check ring, and a smearing space is defined by the detection support, the inner enclosure, the outer enclosure and the check ring. According to the ground permeability detection device for road maintenance, the detection support, the inner enclosure, the outer enclosure and the check ring are arranged and matched, when a sealing material is smeared, an automatic smearing mode is adopted to replace manual smearing, the smearing area is large, the efficiency is high, and in the whole smearing process, the smearing efficiency is high; the detection space and the smearing space are separated from each other through the inner enclosure, so that the sealing material in the smearing space can be prevented from entering the detection space, and the accuracy of subsequent detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, and in particular to a ground permeability detection device for highway maintenance. Background Art

[0002] When maintaining roads, ground permeability is one of the key indicators for measuring road pavement quality and durability. Accurately testing ground permeability helps to promptly detect early road surface diseases, take targeted maintenance measures, and extend the service life of roads. At present, highway ground permeability testing technology is mainly based on the principle of water infiltration, and evaluates permeability by measuring the penetration depth or amount of water in the ground over a certain period of time.

[0003] Before testing, the detection device in the prior art needs to seal the annular area outside the detection area. When sealing the annular area, the prior art usually adopts the method of manually applying the sealing material. However, when manually applying the sealing material, it is difficult to ensure the uniformity and sealing of the application. When applying, once the sealing material enters the detection area, it will change the physical properties of the detection area, interfere with the normal penetration process of water, cause deviations in the detection data, and fail to accurately reflect the true permeability of the road surface. And after the initial application, if the sealing effect is found to be poor, a second coating is required, which further increases the time cost and labor cost. Summary of the invention

[0004] The invention provides a ground permeability detection device for highway maintenance, so as to solve the problems that when the existing detection device is used, the uniformity and sealing performance of the manually applied sealing material are poor, and the sealing material easily enters the detection area to affect the detection result.

[0005] A ground permeability detection device for highway maintenance of the present invention adopts the following technical scheme: a ground permeability detection device for highway maintenance, comprising a detection support, an inner enclosure, an outer enclosure and a retaining ring; the inner enclosure is arranged along the vertical direction and is located at the lower end of the detection support, and a detection space is defined between the inner enclosure, the detection support and the ground; a water cylinder is arranged on the detection support, and the water cylinder is connected to the detection space; the retaining ring is arranged at the lower end of the detection support and is located outside the inner enclosure, and the detection support and the retaining ring can move relative to each other in the vertical direction; the outer enclosure is rotatably installed at the lower end of the retaining ring, the outer enclosure is coaxial with the inner enclosure, and the lower end surface of the outer enclosure is located at the same horizontal plane as the lower end surface of the inner enclosure, and a smearing space is defined between the detection support, the inner enclosure, the outer enclosure and the retaining ring; a material holding cavity is opened on the retaining ring, and the material holding cavity is connected to the smearing space; a plurality of downward pressing blocks are arranged on the detection support around the vertical direction, the downward pressing blocks are located above the material holding cavity, and the downward pressing blocks can move downward to extend into the material holding cavity and slide and seal with the material holding cavity.

[0006] Furthermore, a plurality of material holding barrels are evenly distributed on the retaining ring in the vertical direction, and the material holding cavity is defined by the space inside the plurality of material holding barrels. The material holding barrels and the lower pressing blocks are arranged in one-to-one correspondence, and each lower pressing block is located above the corresponding material holding barrel. The lower pressing block can move downward, extend into the material holding barrel, and slide and seal with the material holding barrel.

[0007] Furthermore, gaskets are provided at the lower ends of the inner enclosure and the outer enclosure, and the gaskets are made of rubber and are elastic.

[0008] Furthermore, a plurality of return holes are provided on the detection support, and the return holes are connected vertically through the detection support and are connected with the smearing space.

[0009] Furthermore, the detection support can be set to rotate around the vertical direction, and the retaining ring can rotate synchronously with the detection support; the retaining ring can rotate around the vertical direction relative to the outer block, and can move synchronously with the outer block; the detection support is connected to the inner block through the adjustment block, and the adjustment block is threaded with the inner block.

[0010] Furthermore, it also includes a counterweight block, which can be placed on the upper end of the detection support; a first smooth section and a first threaded section are sequentially arranged on the outer peripheral wall surface of the adjustment enclosure in the vertical direction, and the first smooth section is located above the first threaded section; a second smooth section and a second threaded section are sequentially arranged on the inner peripheral wall surface of the inner enclosure in the vertical direction, and the second smooth section is located below the second threaded section, and in the initial state, the first threaded section and the second threaded section rotate in cooperation.

[0011] Furthermore, the detection support and the retaining ring are connected via a first elastic member, the adjustment enclosure and the inner enclosure are connected via a second elastic member, and both the first elastic member and the second elastic member are arranged in the vertical direction.

[0012] Furthermore, the pressing block is mounted on the detection support through a third elastic member, and the third elastic member is arranged along the vertical direction.

[0013] Furthermore, each lower pressure block is provided with an adjusting cylinder, and a partition is provided in the adjusting cylinder, which divides the adjusting cylinder into an upper chamber and a lower chamber, the upper chamber is located above the lower chamber, the lower pressure block and the third elastic member are both located in the lower chamber of the adjusting cylinder, and a plurality of support arms are evenly distributed on the detection support in the vertical direction, the support arms are arranged one-to-one with the adjusting cylinders, and the support arms are installed in the upper chamber of the adjusting cylinder through the fourth elastic member, and the fourth elastic member is arranged along the vertical direction.

[0014] Furthermore, an exhaust valve is provided on the detection support, and the exhaust valve is communicated with the detection space.

[0015] The beneficial effects of the present invention are as follows: a ground permeability detection device for highway maintenance of the present invention cooperates by setting a detection support, an inner enclosure, an outer enclosure and a retaining ring. When applying the sealing material, an automatic application method is adopted instead of manual application. The application area is large and the efficiency is high. In the entire application process, the detection space and the application space are separated from each other by the inner enclosure, which can prevent the sealing material in the application space from entering the detection space, thereby improving the accuracy of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the overall structure of an embodiment of a ground permeability detection device for highway maintenance according to the present invention; Figure 2 A cross-sectional view of the overall structure of an embodiment of a ground permeability detection device for highway maintenance according to the present invention; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 for Figure 2 The enlarged view of point B in the middle; Figure 5 for Figure 2 Enlarged view of point C in the middle; Figure 6 for Figure 2 Enlarged view of point D in the middle.

[0018] In the figure: 100, detection support; 110, water cylinder; 111, support frame; 112, valve switch; 113, return hole; 114, capillary; 120, lower pressure block; 121, third elastic member; 130, adjustment enclosure; 140, adjustment cylinder; 141, fourth elastic member; 150, support arm; 160, exhaust valve; 200, inner enclosure; 210, second elastic member; 300, outer enclosure; 310, rotating seat; 320, end cover; 330, gasket; 400, retaining ring; 410, first elastic member; 420, material cylinder; 500, detection space; 600, smearing space; 700, counterweight; 701, clearance hole. DETAILED DESCRIPTION

[0019] 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.

[0020] An embodiment of a ground permeability detection device for highway maintenance of the present invention is as follows Figures 1 to 6 shown.

[0021] A ground permeability detection device for highway maintenance includes a detection support 100, an inner enclosure 200, an outer enclosure 300 and a retaining ring 400. The inner enclosure 200 is arranged along the vertical direction and is located at the lower end of the detection support 100, and a detection space 500 is defined between the inner enclosure 200, the detection support 100 and the ground. A water cylinder 110 is arranged on the detection support 100, and the water cylinder 110 is connected to the detection space 500. The retaining ring 400 is arranged at the lower end of the detection support 100 and is located outside the inner enclosure 200, and the detection support 100 and the retaining ring 400 can move relative to each other in the vertical direction. The outer block 300 is rotatably mounted on the lower end of the retaining ring 400. The outer block 300 is coaxial with the inner block 200, and the lower end surface of the outer block 300 and the lower end surface of the inner block 200 are located at the same horizontal plane, so that the lower end surface of the outer block 300 and the lower end surface of the inner block 200 can both abut against the ground. A coating space 600 is defined between the detection support 100, the inner block 200, the outer block 300 and the retaining ring 400. A material holding cavity is provided on the retaining ring 400, and the material holding cavity is connected to the coating space 600. A plurality of lower pressing blocks 120 are arranged on the detection support 100 in a vertical direction. The lower pressing blocks 120 are located above the material holding cavity. The lower pressing blocks 120 can move downward to extend into the material holding cavity and slide and seal with the material holding cavity.

[0022] Specifically, the water cylinder 110 is made of transparent organic glass and has scales on it. The water cylinder 110 is connected to the detection support 100 through a support frame 111. A thin tube 114 is provided at the lower end of the water cylinder 110. The thin tube 114 vertically penetrates the detection support 100 downward and is connected to the detection space 500. A valve switch 112 is provided on the thin tube 114. When the valve switch 112 is opened, water is allowed to enter the detection space 500, and when the valve switch 112 is closed, water is restricted from entering the detection space 500.

[0023] This embodiment cooperates with the detection support 100, the inner enclosure 200, the outer enclosure 300 and the retaining ring 400. When testing the permeability of the ground, the sealing material is first added to the material holding cavity, and then the detection points are randomly selected on the ground, and the detection device is placed on the ground. Then the detection support 100 moves downward relative to the retaining ring 400. The downward movement of the detection support 100 will drive the lower pressing block 120 to move downward synchronously. The lower pressing block 120 is used to squeeze the sealing material downward, so that the sealing material enters the coating space 600 from the material holding cavity downward, and the coating space 600 is sealed. Then the water in the water cylinder 110 is injected into the detection space 500, and the permeability is evaluated by measuring the penetration depth or penetration amount of water in the ground within a certain period of time.

[0024] When applying the sealing material, automatic application is adopted instead of manual application, which has a large application area and high efficiency. In the whole application process, the detection space 500 and the application space 600 are separated from each other by the inner enclosure 200, which can prevent the sealing material in the application space 600 from entering the detection space 500, thereby improving the accuracy of subsequent detection.

[0025] In a further embodiment, a plurality of material barrels 420 are evenly distributed on the retaining ring 400 in the vertical direction, and the material chamber is defined by the space inside the plurality of material barrels 420. The material barrels 420 are arranged one by one with the lower pressing blocks 120, and each lower pressing block 120 is located above the corresponding material barrel 420. The lower pressing block 120 can move downward to extend into the material barrel 420 and slide and seal with the material barrel 420.

[0026] In a further embodiment, the detection support 100 is rotatable about a vertical direction, and the retaining ring 400 can rotate synchronously with the detection support 100. The retaining ring 400 can rotate about a vertical direction relative to the outer block 300, and can move synchronously with the outer block 300. The detection support 100 is connected to the inner block 200 through the adjustment block 130, and the adjustment block 130 is threadedly matched with the inner block 200.

[0027] Specifically, a plurality of slide grooves are provided on the outer peripheral wall surface of the detection support 100 in the vertical direction, and the slide grooves are arranged along the vertical direction. A plurality of slide keys are provided on the inner peripheral wall surface of the retaining ring 400 in the vertical direction. The slide keys are arranged in one-to-one correspondence with the slide grooves, and the slide grooves and their corresponding slide keys are slidably matched, so that the detection support 100 and the retaining ring 400 can move relative to each other in the vertical direction, and the detection support 100 and the retaining ring 400 can rotate synchronously.

[0028] A rotation groove is provided on the outer block 300, which is an annular groove and is coaxially arranged with the outer block 300. A rotation protrusion is provided on the outer block 300 around the vertical direction, and the rotation protrusion rotates in cooperation with the rotation groove, so that the retaining ring 400 can rotate around the vertical direction relative to the outer block 300 and can move synchronously with the outer block 300.

[0029] Furthermore, the lower ends of the inner enclosure 200 and the outer enclosure 300 are both provided with gaskets 330. The gaskets 330 are made of rubber and are elastic. The gaskets 330 can abut against the ground. The gaskets 330 are provided to increase the friction between the inner enclosure 200 and the outer enclosure 300 and the ground.

[0030] Specifically, the outer stopper 300 includes a rotating seat 310 and an end cover 320. The rotation groove is opened on the rotating seat 310, the end cover 320 is fixedly connected to the rotating seat 310 by bolts, and the gasket 330 is installed at the lower end of the rotating seat 310.

[0031] During use, the detection support 100 is manually rotated, and the rotation of the detection support 100 will drive the adjustment enclosure 130 and the retaining ring 400 to rotate synchronously. Since the inner enclosure 200 and the outer enclosure 300 are both in contact with the ground and there is a large friction between them and the ground, the inner enclosure 200 and the outer enclosure 300 remain relatively stationary at this time, and the detection support 100 drives the adjustment enclosure 130 to rotate. Since the adjustment enclosure 130 is threadedly matched with the inner enclosure 200, the adjustment enclosure 130 will rotate synchronously with the detection support 100 and move downward, that is, the adjustment enclosure 130 will move downward relative to the retaining ring 400, so that the lower pressure block 120 provided on the adjustment enclosure 130 moves downward to squeeze the sealing material in the material holding barrel 420, so that the sealing material falls into the coating space 600 in a rotating and falling manner, thereby improving the uniformity of the falling of the sealing material.

[0032] In a further embodiment, a plurality of return holes 113 are provided on the detection support 100 . The return holes 113 are connected vertically on the detection support 100 and communicated with the coating space 600 .

[0033] By providing the return hole 113 , after the coating space 600 is filled with the sealing material, the sealing material will overflow from the return hole 113 , which is convenient for the operator to observe and judge whether the coating space 600 needs to continue to be fed.

[0034] In a further embodiment, a ground permeability detection device for highway maintenance further includes a counterweight 700, which can be placed on the upper end of the detection support 100. A first smooth section and a first threaded section are sequentially arranged on the outer peripheral wall surface of the adjustment enclosure 130 in the vertical direction, and the first smooth section is located above the first threaded section. A second smooth section and a second threaded section are sequentially arranged on the inner peripheral wall surface of the inner enclosure 200 in the vertical direction, and the second smooth section is located below the second threaded section. In the initial state, the first threaded section and the second threaded section are rotationally matched.

[0035] Furthermore, the detection support 100 and the retaining ring 400 are connected via a first elastic member 410, which is arranged in the vertical direction and is a spring. When the detection support 100 moves downward relative to the retaining ring 400, the first elastic member 410 is compressed.

[0036] The adjustment enclosure 130 and the inner enclosure 200 are connected by a second elastic member 210, which is arranged in the vertical direction and is a spring. When the adjustment enclosure 130 moves downward relative to the inner enclosure 200, the second elastic member 210 is compressed.

[0037] After the sealing material overflows from the return hole 113, the counterweight 700 is placed on the detection support 100, and the relationship between the volume of the coating space 600 and the descending distance of the detection support 100 is adjusted so that when the sealing material overflows from the return hole 113, the meshing of the first thread segment and the second thread segment ends. Under the action of the counterweight 700, the adjustment enclosure 130 will move downward relative to the inner enclosure 200, further compressing the first elastic member 410 and the second elastic member 210, so that the sealing material in the coating space 600 is compacted and the fit between the sealing material and the ground is improved.

[0038] In a further embodiment, the lower pressing block 120 is installed on the detection support 100 through a third elastic member 121 . The third elastic member 121 is arranged along the vertical direction and is a spring.

[0039] In this embodiment, the third elastic member 121 is provided. When the pressure of the sealing material increases after the counterweight 700 is added, the lower pressing block 120 will compress the third elastic member 121, so that the sealing material enters the material holding barrel 420 and is reversely recovered, thereby saving the use of sealing material and relieving the pressure of the sealing material.

[0040] Furthermore, an exhaust valve 160 is provided on the detection support 100 , and the exhaust valve 160 is arranged in the vertical direction. A clearance hole 701 is opened on the counterweight block 700 , and both the exhaust valve 160 and the support frame 111 can pass through the clearance hole 701 , and the exhaust valve 160 is connected to the detection space 500 .

[0041] By providing the exhaust valve 160, when the exhaust valve 160 is opened, the gas is allowed to be discharged from the detection space 500, and when the exhaust valve 160 is closed, the gas is restricted from being discharged from the detection space 500. When the valve switch 112 of the water container 110 is opened to allow water to flow downward to discharge the gas in the detection space 500, the operator can press the detection support 100 downward to make the adjustment enclosure 130 move downward relative to the inner enclosure 200 to assist the gas discharge.

[0042] In another possible implementation, each lower pressing block 120 is provided with an adjusting cylinder 140, and a partition is provided in the adjusting cylinder 140, which divides the adjusting cylinder 140 into an upper cavity and a lower cavity, the upper cavity is located above the lower cavity, and the lower pressing block 120 and the third elastic member 121 are both located in the lower cavity of the adjusting cylinder 140. A plurality of supporting arms 150 are evenly distributed on the detection support 100 in the vertical direction, and the supporting arms 150 are arranged one-to-one with the adjusting cylinder 140, and the supporting arms 150 are installed in the upper cavity of the adjusting cylinder 140 through the fourth elastic member 141, and the fourth elastic member 141 is arranged along the vertical direction, and the fourth elastic member 141 is a spring.

[0043] In this embodiment, by setting the adjustment cylinder 140, when the detection is completed, the counterweight 700 is first removed, and then the first elastic member 410, the second elastic member 210 and the third elastic member 121 are reset for a distance, and then the detection support 100 is reversed, so that the first thread segment is matched with the second thread segment again, and then the detection support 100 and the adjustment enclosure 130 are rotated and moved upward, at which time the lower pressing block 120 will also move upward, and a part of the sealing material in the coating space 600 will be withdrawn to recycle the sealing material. If the sealing material hardens into a mass and cannot be extracted, there will be no air in the coating space 600 at this time, and the lower pressing block 120 cannot move upward. At this time, the fourth elastic member 141 will be compressed. When the operator finds that the fourth elastic member 141 is compressed, he will no longer rotate the detection support 100, and directly lift the detection support 100 upward.

[0044] In combination with the above embodiments, the specific working process is as follows: When testing the permeability of the ground, first add sealing material to the material holding cavity, then randomly select testing points on the ground, and place the testing device on the ground, and manually rotate the testing support 100. The rotation of the testing support 100 will drive the adjusting enclosure 130 and the retaining ring 400 to rotate synchronously. Since the inner enclosure 200 and the outer enclosure 300 are both in contact with the ground and there is a large friction between them and the ground, the inner enclosure 200 and the outer enclosure 300 remain relatively stationary at this time, and the testing support 100 drives the adjusting enclosure 130 to rotate. Since the adjusting enclosure 130 is threadedly matched with the inner enclosure 200, the adjusting enclosure 130 will rotate synchronously with the testing support 100 and move downward, that is, the adjusting enclosure 130 will move downward relative to the retaining ring 400, so that the lower pressing block 120 provided on the adjusting enclosure 130 moves downward to squeeze the sealing material in the material holding barrel 420, so that the sealing material falls into the coating space 600 in a rotating and falling manner, thereby improving the uniformity of the falling of the sealing material.

[0045] After the sealing material in the coating space 600 is filled, the sealing material will overflow from the return hole 113, which is convenient for the operator to observe. After the sealing material overflows from the return hole 113, the counterweight block 700 is placed on the detection support 100, and the relationship between the volume of the coating space 600 and the descending distance of the detection support 100 is adjusted so that when the sealing material overflows from the return hole 113, the meshing of the first thread segment and the second thread segment ends. Under the action of the counterweight block 700, the adjustment enclosure 130 will move downward relative to the inner enclosure 200, further compress the first elastic member 410, and compress the second elastic member 210, so that the sealing material in the coating space 600 is compacted, and the degree of fit between the sealing material and the ground is improved. And when the pressure of the sealing material increases after the counterweight block 700 is added, the lower pressing block 120 will compress the third elastic member 121, so that the sealing material enters the material holding barrel 420 and is reversely recovered, which can save the use of the sealing material and relieve the pressure of the sealing material.

[0046] Then, the valve switch 112 of the water cylinder 110 is opened to inject the water in the water cylinder 110 into the detection space 500. In the process of opening the valve switch 112 of the water cylinder 110 to allow the water to flow downward to discharge the gas in the detection space 500, the operator can press the detection support 100 downward to make the adjustment enclosure 130 move downward relative to the inner enclosure 200 to assist the gas discharge. After the gas is discharged, continue to inject water, and evaluate the permeability by measuring the penetration depth or penetration amount of water in the ground within a certain period of time.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ground permeability detection device for highway maintenance, characterized in that: It includes a detection support, an inner enclosure, an outer enclosure and a retaining ring; the inner enclosure is arranged in the vertical direction and is located at the lower end of the detection support, and a detection space is defined between the inner enclosure, the detection support and the ground; a water cylinder is arranged on the detection support, and the water cylinder is connected with the detection space; the retaining ring is arranged at the lower end of the detection support and is located outside the inner enclosure, and the detection support and the retaining ring can move relative to each other in the vertical direction; the outer enclosure is rotatably installed at the lower end of the retaining ring, the outer enclosure is coaxial with the inner enclosure, and the lower end surface of the outer enclosure is located at the same horizontal plane as the lower end surface of the inner enclosure, and a smearing space is defined between the detection support, the inner enclosure, the outer enclosure and the retaining ring; a material holding cavity is opened on the retaining ring, and the material holding cavity is connected with the smearing space; A plurality of pressing blocks are arranged on the detection support in a vertical direction. The pressing blocks are located above the material holding cavity. The pressing blocks can move downward, extend into the material holding cavity, and slide and seal with the material holding cavity.

2. A ground permeability detection device for road maintenance according to claim 1, characterized in that: There are multiple material barrels evenly distributed on the retaining ring in the vertical direction. The material chamber is defined by the space inside the multiple material barrels. The material barrels and the lower pressing blocks are arranged one by one. Each lower pressing block is located above the corresponding material barrel. The lower pressing block can move downward, extend into the material barrel and slide and seal with the material barrel.

3. A ground permeability detection device for road maintenance according to claim 1, characterized in that: Gaskets are arranged at the lower ends of the inner enclosure and the outer enclosure. The gaskets are made of rubber and are elastic.

4. A ground permeability detection device for road maintenance according to claim 1, characterized in that: A plurality of material return holes are provided on the detection support, and the material return holes are connected vertically on the detection support and are connected with the smearing space.

5. A ground permeability detection device for road maintenance according to claim 1, characterized in that: The detection support can be set to rotate around the vertical direction, and the retaining ring can rotate synchronously with the detection support; the retaining ring can rotate around the vertical direction relative to the outer block, and can move synchronously with the outer block; the detection support is connected to the inner block through the adjustment block, and the adjustment block is threaded with the inner block.

6. A ground permeability detection device for road maintenance according to claim 5, characterized in that: It also includes a counterweight block, which can be placed on the upper end of the detection support; a first smooth section and a first threaded section are sequentially arranged on the outer circumferential wall surface of the adjustment enclosure in the vertical direction, and the first smooth section is located above the first threaded section; a second smooth section and a second threaded section are sequentially arranged on the inner circumferential wall surface of the inner enclosure in the vertical direction, and the second smooth section is located below the second threaded section, and in an initial state, the first threaded section and the second threaded section rotate in cooperation.

7. A ground permeability detection device for road maintenance according to claim 6, characterized in that: The detection support and the retaining ring are connected via a first elastic member, the adjustment enclosure and the inner enclosure are connected via a second elastic member, and both the first elastic member and the second elastic member are arranged in a vertical direction.

8. A ground permeability detection device for road maintenance according to claim 7, characterized in that: The lower pressing block is installed on the detection support through a third elastic member, and the third elastic member is arranged along the vertical direction.

9. A ground permeability detection device for highway maintenance according to claim 8, characterized in that: An adjusting cylinder is arranged on each lower pressure block, and a partition is arranged inside the adjusting cylinder, which divides the adjusting cylinder into an upper cavity and a lower cavity. The upper cavity is located above the lower cavity, and the lower pressure block and the third elastic member are both located in the lower cavity of the adjusting cylinder. A plurality of support arms are evenly distributed on the detection support in the vertical direction, and the support arms are arranged one-to-one with the adjusting cylinders. The support arms are installed in the upper cavity of the adjusting cylinder through the fourth elastic member, and the fourth elastic member is arranged along the vertical direction.

10. A ground permeability detection device for road maintenance according to claim 1, characterized in that: An exhaust valve is arranged on the detection support, and the exhaust valve is communicated with the detection space.

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