Ground permeability detection device for road maintenance

Abstract

The invention is applicable to the technical field of ground permeability detection, and provides a ground permeability detection device for road maintenance, which comprises a base and a contact cavity arranged at the bottom of the base, and further comprises a support frame fixed at the upper end of the base, and a water injection test assembly is arranged on the support frame and is used for injecting water into the contact cavity; an annular cavity is vertically formed in the bottom of the base, the annular cavity is located on the outer side of the contact cavity, an annular piston is slidably connected into the annular cavity, a plurality of guide grooves are annularly formed in the base, and plugging plates are slidably connected into the guide grooves; a bearing disc is slidably connected to the supporting frame, a first pressure spring is connected to the bottom of the bearing disc, and the tail end of the first pressure spring is fixed to the upper end of the base. The sealing material does not need to be smeared on the pavement in advance during the pavement water permeability test, so that the steps of the pavement water permeability test are simplified, and the efficiency of the pavement water permeability test is improved.

Description

Technical Field

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

[0002] Ground permeability testing is an important indicator for evaluating the drainage performance of pavement. During highway maintenance, by testing the water permeability coefficient of the pavement, we can understand the drainage capacity of the pavement when it rains, ensure that the pavement can drain water in time and prevent the formation of water film. Through water permeability testing, we can timely discover and repair the water seepage problem of the pavement, reduce the damage to the pavement caused by water penetration, and thus extend the service life of the pavement.

[0003] Ground permeability testing is usually carried out using an asphalt pavement water seepage meter. Before the test, clean the road surface, use chalk to draw marks along the inner and outer rings of the marking ring, remove the marking ring, place the standard ring on the mark, apply sealing material between the inner and outer diameters of the standard ring, and use a scraper to repair it into a ring shape. Press the water seepage meter onto the sealing material, and add two weights to prevent water from flowing out from between the base and the road surface due to light pressure, thereby completing the instrument installation steps before testing.

[0004] Before using the existing ground permeability detection device for highway maintenance, it is necessary to use a scraper to trim a sealing ring on the road surface with sealing material to prevent the instrument from leaking during detection. The ground permeability detection requires selecting different road surface locations for multiple tests. Therefore, during the ground permeability detection, the instrument needs to be sealed and installed multiple times, which is more troublesome. In addition, the sealing material can be reused. After the test, the operator needs to manually recycle the sealing material, which makes the existing ground permeability detection device for highway maintenance inconvenient to use. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a ground permeability detection device for highway maintenance, aiming to solve the problem that the existing ground permeability detection device for highway maintenance needs to be manually sealed and installed multiple times during use, making the existing detection instrument inconvenient to use.

[0006] The present invention is implemented as follows. A ground permeability detection device for highway maintenance includes a base, and a contact cavity provided at the bottom of the base. It further includes: a support frame fixed to the upper end of the base, and a water injection test assembly provided on the support frame, where the water injection test assembly is used to inject water into the contact cavity; a circular cavity is vertically provided at the bottom of the base, the circular cavity is located outside the contact cavity, a circular piston is slidably connected in the circular cavity, and a plurality of guide grooves are annularly provided in the base, and a plurality of plugging plates are slidably connected in each of the plurality of guide grooves; a load-bearing plate is slidably connected to the support frame, a first compression spring is connected to the bottom of the load-bearing plate, the end of the first compression spring is fixed to the upper end of the base, and a counterweight is provided on the load-bearing plate; a transmission mechanism is provided on the load-bearing plate. In the initial state, a plurality of plugging plates are closed and block the lower end of the circular cavity. When the load-bearing plate moves downward, the transmission mechanism drives the plurality of plugging plates to move away from each other and open the lower end of the circular cavity; a pushing assembly is provided at the lower end of the load-bearing plate. When the load-bearing plate moves downward, the pushing assembly drives the circular piston to move downward.

[0007] A further technical solution is that the water injection test assembly includes a measuring cylinder fixed to the upper end of the support frame. The measuring cylinder is communicated with the contact cavity through a connecting pipe, a check valve is installed on the connecting pipe, an exhaust pipe is installed on the contact cavity, and a sealing plug is installed at the end of the exhaust pipe.

[0008] A further technical solution is that the transmission mechanism includes a bent plate fixed to the upper end of at least one plugging plate, and at least one pushing shaft fixed to the load-bearing plate. An avoidance opening for avoiding the movement of the bent plate is provided at the upper end of the base. A V-shaped sliding groove is provided on the bent plate, the pushing shaft is slidably connected in the V-shaped sliding groove, and a synchronization assembly is provided in the base. The synchronization assembly is used to drive the plurality of plugging plates to move towards or away from each other synchronously.

[0009] A further technical solution is that the synchronization assembly includes a rotating ring rotatably connected in the base. The rotating ring is located above the plurality of plugging plates. A plurality of inclined grooves are annularly and evenly provided on the rotating ring. Fixed shafts are fixed to the upper ends of the plurality of plugging plates, and the plurality of fixed shafts are respectively slidably connected in the plurality of inclined grooves.

[0010] A further technical solution is that the pushing assembly includes a sliding rod fixed to the lower end of the load-bearing plate. The lower end of the sliding rod is slidably connected with a sliding sleeve, and the end of the sliding sleeve is fixed to the upper end of the circular piston. The V-shaped sliding groove includes an inclined section and a vertical section.

[0011] A further technical solution is that a circular sliding groove is provided at the bottom of the base. A circular baffle is slidably connected in the circular sliding groove. A second compression spring is fixed to the upper end of the circular baffle, and the upper end of the second compression spring is fixed in the circular sliding groove. The circular baffle is located between the contact cavity and the circular cavity.

[0012] A further technical solution is that a horizontal sliding groove is provided in the support frame, a sliding block is slidably connected in the sliding groove, a compression spring three is fixed to one end of the sliding block, the end of the compression spring three is fixed in the sliding groove, a limiting block is fixed to the other end of the sliding block, a limiting groove is provided on the load-bearing plate, the limiting block cooperates with the limiting groove, an unlocking component is provided on the annular baffle, and when the annular baffle moves upward, the unlocking component overcomes the elastic force of the compression spring three and drives the sliding block away from the limiting groove.

[0013] According to a further technical solution, the unlocking assembly includes a vertical push block fixed to the upper end of the annular baffle plate, and an avoidance groove arranged on the sliding block, wherein an inclined push surface is arranged in the avoidance groove, and the upper end of the vertical push block cooperates with the inclined push surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This application does not require the sealing material to be applied to the road surface in advance during the road surface water permeability test, thereby simplifying the steps of the road surface water permeability test and improving the efficiency of the road surface water permeability test; 2. When multiple blocking plates move toward each other, the sealing materials can be recycled and reused, saving materials and increasing the utilization rate of sealing materials. Testers do not need to manually recycle the sealing materials. 3. When the load-bearing plate moves downward, the sealing plate first opens the lower end of the annular cavity, and then the annular piston squeezes the sealing material in the annular cavity to prevent the pressure in the annular cavity from increasing and squeezing the sealing plate out of shape; 4. When the load-bearing plate moves upward, the high pressure in the annular cavity disappears first, and the sealing plate then closes the lower end of the annular cavity. After the high pressure in the annular cavity disappears, the sealing material at the lower end of the annular cavity will flow back into the annular cavity, thereby recovering the sealing material to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a ground permeability detection device for highway maintenance provided by the present invention; Figure 2 The present invention provides Figure 1 Schematic diagram of the structure when looking up at the tilt angle; Figure 3 The present invention provides Figure 1 Schematic diagram of the structure from a top-down perspective; Figure 4 The present invention provides Figure 3 Schematic diagram of the cross-sectional structure from the middle AA perspective; Figure 5 The present invention provides Figure 4 A schematic diagram of the enlarged structure of B; Figure 6 The present invention provides Figure 2Schematic diagram of the internal structure of the middle base; Figure 7 The present invention provides Figure 5 Schematic diagram of the structure of the middle annular piston, the sealing plate and the rotating ring; Figure 8 The present invention provides Figure 7 Schematic diagram of the structure when looking up at the tilt angle; Fig. 9 The present invention provides Figure 7 Schematic diagram of the internal structure of the middle load-bearing plate and the support frame; Fig.10 The present invention provides Figure 5 Schematic diagram of the structure of the middle annular baffle; Fig.11 The present invention provides Fig. 9 Schematic diagram of the enlarged structure of C in the middle; Fig.12 The present invention provides Fig.11 Schematic diagram of the structure of the sliding block.

[0016] In the attached drawings: 101, base; 102, contact cavity; 103, support frame; 104, counterweight; 105, annular cavity; 106, annular piston; 107, guide groove; 108, blocking plate; 109, load-bearing plate; 110, compression spring 1; 2, water injection test assembly; 201, measuring cylinder; 202, connecting pipe; 203, check valve; 204, exhaust pipe; 205, blocking plug; 3, transmission mechanism; 301, avoidance; 302, bending plate; 303, V-shaped slide groove; 304, Push shaft; 4, synchronization component; 401, rotating ring; 402, oblique groove; 403, fixed shaft; 5, pushing component; 501, sliding rod; 502, sliding sleeve; 503, inclined section; 504, vertical section; 601, annular sliding groove; 602, annular baffle; 603, compression spring 2; 701, sliding groove; 702, sliding block; 703, compression spring 3; 704, limit block; 705, limit groove; 8, unlocking component; 801, vertical push block; 802, avoidance groove; 803, oblique push surface. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0019] like Figure 1-Figure 6As shown, a ground permeability detection device for highway maintenance provided by an embodiment of the present invention includes a base 101 and a contact cavity 102 arranged at the bottom of the base 101, and also includes: a support frame 103 fixed at the upper end of the base 101, and a water injection test component 2 is arranged on the support frame 103, and the water injection test component 2 is used to inject water into the contact cavity 102; an annular cavity 105 is vertically arranged at the bottom of the base 101, and the annular cavity 105 is located outside the contact cavity 102, and an annular piston 106 is slidably connected in the annular cavity 105, and a plurality of guide grooves 107 are annularly arranged in the base 101, and a plurality of guide grooves 107 are slidably connected in each of the plurality of guide grooves 107. A sealing plate 108; a load-bearing plate 109 is slidably connected to the support frame 103, a compression spring 110 is connected to the bottom of the load-bearing plate 109, the end of the compression spring 110 is fixed to the upper end of the base 101, and a counterweight block 104 is arranged on the load-bearing plate 109; a transmission mechanism 3 is arranged on the load-bearing plate 109, and in the initial state, multiple sealing plates 108 are closed and block the lower end of the annular cavity 105, and when the load-bearing plate 109 moves downward, the transmission mechanism 3 drives the multiple sealing plates 108 to move away from each other and open the lower end of the annular cavity 105; a pushing component 5 is arranged at the lower end of the load-bearing plate 109, and when the load-bearing plate 109 moves downward, the pushing component 5 drives the annular piston 106 to move downward.

[0020] In the embodiment of the present invention, before use, the annular cavity 105 is filled with sealing materials at the bottom of the annular piston 106, and the sealing materials include waterproof putty, putty and plasticine, etc. When in use, chalk is used to mark multiple circles in the water permeability detection area to facilitate the placement of the ground permeability detection device for highway maintenance, and then the base 101 is placed on the circle, and the counterweight 104 is placed on the load-bearing plate 109. Under the guidance of the support frame 103, the counterweight 104 overcomes the elastic force of the compression spring 110 through its own weight and drives the bearing plate 109 to move. The weight plate 109 moves downward. When the weight plate 109 moves downward, the transmission mechanism 3 drives the multiple blocking plates 108 to move away from each other and open the lower end of the annular cavity 105. The pushing component 5 drives the annular piston 106 to move downward. The annular piston 106 squeezes the sealing material downward, so that the sealing material is fully in contact with the inner wall of the annular cavity 105 and the road surface, so that the contact cavity 102 is sealed, so as to prevent water from flowing out from the edge of the base 101 and the road surface from being permeable when the water injection test component 2 injects water into the contact cavity 102 for testing. After the test, the counterweight 104 is removed. Under the guidance of the support frame 103, the compression spring 110 pushes the load-bearing plate 109 to move upward. The load-bearing plate 109 drives the annular piston 106 to move upward by pushing the assembly 5. The extrusion force of the sealing material in the annular cavity 105 disappears, and the transmission mechanism 3 drives multiple sealing plates 108 to move toward each other and block the lower end of the annular cavity 105, thereby preventing the sealing material from flowing out of the lower end of the annular cavity 105. A gap is set between the sealing plate 108 and the road surface, thereby preventing the sealing material that has contacted the ground from being collected into the annular cavity 105, so as to recycle the clean sealing material. After a road surface water permeability test is completed, the present application does not need to apply the sealing material on the road surface in advance during the road surface water permeability test, thereby simplifying the steps of the road surface water permeability test, thereby improving the efficiency of the road surface water permeability test, and when multiple sealing plates 108 move toward each other, the sealing material can be recycled, and then the sealing material can be reused, saving materials, and improving the utilization rate of the sealing material, without the need for testers to manually recycle the sealing material.

[0021] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, the water injection test assembly 2 includes a measuring cylinder 201 fixed at the upper end of the support frame 103, the measuring cylinder 201 is connected to the contact cavity 102 through a connecting pipe 202, a check valve 203 is installed on the connecting pipe 202, an exhaust pipe 204 is installed on the contact cavity 102, and a sealing plug 205 is installed at the end of the exhaust pipe 204.

[0022] In the embodiment of the present invention, when in use, water is injected into the measuring cylinder 201, the sealing plug 205 is unplugged and the check valve 203 is opened, the water in the measuring cylinder 201 enters the contact cavity 102 through the connecting pipe 202, and the air in the contact cavity 102 is discharged from the exhaust pipe 204, and then the check valve 203 is closed, and the exhaust pipe 204 is blocked with the sealing plug 205, and water is injected into the measuring cylinder 201 again, and the check valve 203 is opened again, and the water in the measuring cylinder 201 enters the contact cavity 102 through the connecting pipe 202, and the falling time of the water level in the measuring cylinder 201 is observed, so as to perform a water permeability test on the road surface.

[0023] like Figure 1-Figure 8 As shown, as a preferred embodiment of the present invention, the transmission mechanism 3 includes at least one bent plate 302 fixed on the upper end of the blocking plate 108, and at least one driving shaft 304 is fixed on the load-bearing plate 109. The upper end of the base 101 is provided with an avoidance opening 301 for avoiding the movement of the bent plate 302. The bent plate 302 is provided with a V-shaped groove 303. The driving shaft 304 is slidably connected in the V-shaped groove 303. A synchronization component 4 is provided in the base 101. The synchronization component 4 is used to drive multiple blocking plates 108 to move synchronously toward or in the opposite direction. The synchronization component 4 includes a bottom A rotating ring 401 rotatably connected in the seat 101, the rotating ring 401 is located above the multiple blocking plates 108, the rotating ring 401 is evenly arranged with multiple oblique grooves 402 in an annular shape, the upper ends of the multiple blocking plates 108 are fixed with fixed shafts 403, the multiple fixed shafts 403 are respectively slidably connected in the multiple oblique grooves 402, the pushing component 5 includes a sliding rod 501 fixed to the lower end of the bearing plate 109, the lower end of the sliding rod 501 is slidably connected with a sliding sleeve 502, the end of the sliding sleeve 502 is fixed to the upper end of the annular piston 106, and the V-shaped sliding groove 303 includes an inclined section 503 and a vertical section 504.

[0024] In the embodiment of the present invention, when the load-bearing plate 109 moves downward, the load-bearing plate 109 drives the driving shaft 304 and the sliding rod 501 to move downward, the sliding rod 501 moves in the sliding sleeve 502, and the driving shaft 304 pushes the bent plate 302 to move toward the outside of the base 101 by cooperating with the inclined section 503. Under the guiding action of one of the guide grooves 107, the bent plate 302 drives one of the blocking plates 108 to move toward the outside of the base 101, and one of the blocking plates 108 drives one of the fixed shafts 403 to move, and one of the fixed shafts 403 drives the rotating ring 401 to rotate through one of the oblique grooves 402. Under the guiding action of the remaining guide grooves 107, the rotating ring 401 cooperates with the fixed shaft 403 through the remaining oblique grooves 402, with The remaining blocking plates 108 are synchronously moved toward the outside of the base 101 until the driving shaft 304 slides into the vertical section 504. The multiple blocking plates 108 are synchronously moved away from each other and the annular cavity 105 is opened, and the sliding rod 501 moves to the lower end of the sliding sleeve 502. The moving sliding rod 501 pushes the annular piston 106 downward through the sliding sleeve 502. The driving shaft 304 cooperates with the inclined section 503 and the vertical section 504 respectively, and the sliding rod 501 cooperates with the sliding sleeve 502. When the bearing plate 109 moves downward, the blocking plate 108 first opens the lower end of the annular cavity 105, and then the annular piston 106 is squeezed with the sealing material in the annular cavity 105 to prevent the pressure in the annular cavity 105 from increasing and squeezing the blocking plate 108 to deform; the bearing plate When 109 moves upward, the load-bearing plate 109 drives the driving shaft 304 and the sliding rod 501 to move upward. The driving shaft 304 first moves upward in the vertical section 504, and the sliding rod 501 moves upward in the sliding sleeve 502. The annular piston 106 does not squeeze the sealing material in the annular cavity 105, and the pressure at the lower end of the annular cavity 105 decreases until the driving shaft 304 slides into the inclined section 503. The driving shaft 304 cooperates with the inclined section 503 to push the bent plate 302 to move toward the inside of the base 101. Under the guidance of one of the guide grooves 107, the bent plate 302 drives one of the blocking plates 108 to move toward the inside of the base 101. One of the blocking plates 108 drives one of the fixed shafts 403 to move in the opposite direction. 403 drives the rotating ring 401 to reverse through one of the oblique grooves 402. Under the guiding action of the remaining guide grooves 107, the rotating ring 401 drives the remaining sealing plates 108 to move synchronously toward the inside of the base 101 through the cooperation of the remaining oblique grooves 402 and the fixed shaft 403. The multiple sealing plates 108 move synchronously toward each other and close the annular cavity 105. The driving shaft 304 cooperates with the inclined section 503 and the vertical section 504 respectively. When the bearing plate 109 moves upward, the high pressure in the annular cavity 105 disappears first, and the sealing plate 108 then closes the lower end of the annular cavity 105. After the high pressure in the annular cavity 105 disappears, the sealing material at the lower end of the annular cavity 105 will flow back into the annular cavity 105, thereby recovering the sealing material to the greatest extent.

[0025] like Figure 2 , Figure 3 , Figure 4 and Fig.10 As shown, as a preferred embodiment of the present invention, an annular groove 601 is provided at the bottom of the base 101, and an annular baffle 602 is slidably connected in the annular groove 601, and a compression spring 2 603 is fixed to the upper end of the annular baffle 602, and the upper end of the compression spring 2 603 is fixed in the annular groove 601, and the annular baffle 602 is located between the contact cavity 102 and the annular cavity 105.

[0026] In the embodiment of the present invention, when the bottom of the base 101 contacts the inside, the compression spring 2 603 pushes the annular baffle 602 downward, so that the annular baffle 602 contacts the road surface, thereby blocking the sealing material on the outside of the annular baffle 602, preventing the sealing material on the outside of the annular baffle 602 from entering the contact cavity 102.

[0027] like Figure 1-Figure 12 As shown, as a preferred embodiment of the present invention, the support frame 103 is provided with a horizontal sliding groove 701, and a sliding block 702 is slidably connected in the sliding groove 701. A compression spring 703 is fixed to one end of the sliding block 702, and the end of the compression spring 703 is fixed in the sliding groove 701. A limiting block 704 is fixed to the other end of the sliding block 702. A limiting groove 705 is provided on the load-bearing plate 109, and the limiting block 704 and the limiting groove 705 are connected. 5, the annular baffle 602 is provided with an unlocking assembly 8, when the annular baffle 602 moves upward, the unlocking assembly 8 overcomes the elastic force of the compression spring 3 703 and drives the sliding block 702 away from the limiting groove 705, the unlocking assembly 8 comprises a vertical push block 801 fixed at the upper end of the annular baffle 602, and an avoidance groove 802 provided on the sliding block 702, an inclined push surface 803 is provided in the avoidance groove 802, and the upper end of the vertical push block 801 cooperates with the inclined push surface 803.

[0028] In the embodiment of the present invention, when the base 101 contacts the road surface, the road surface overcomes the elastic force of the second compression spring 603 and pushes the annular baffle 602 upward, and the annular baffle 602 drives the vertical push block 801 to move upward relative to the base 101 and the support frame 103. The vertical push block 801 moving upward pushes the inclined push surface 803, thereby causing the sliding block 702 to overcome the elastic force of the third compression spring 703 and move away from the limiting groove 705. The sliding block 702 drives the limiting block 704 to disengage from the limiting groove 705, thereby releasing the movement restriction of the load-bearing plate 109; after the use of the ground permeability detection device for highway maintenance is finished and when it is carried, the counterweight block 104 is in In the removed state, the compression spring 110 pushes the load-bearing plate 109 away from the annular piston 106, and the annular baffle 602 is not in contact with the ground. At this time, the annular baffle 602 is away from the base 101, and the annular baffle 602 drives the vertical push block 801 away from the sliding block 702. The compression spring 3 703 pushes the sliding block 702 to move toward the limiting groove 705, and the sliding block 702 drives the limiting block 704 to insert into the limiting groove 705, thereby limiting the movement of the load-bearing plate 109 to avoid collision or accidental touching of the load-bearing plate 109 when carrying the ground permeability detection device for highway maintenance, causing the annular cavity 105 to be opened and the sealing material in the annular cavity 105 to flow out.

[0029] The above embodiment of the present invention provides a ground permeability detection device for highway maintenance. Before use, the bottom of the annular piston 106 in the annular cavity 105 is filled with sealing materials, and the sealing materials include waterproof putty, putty and plasticine. When in use, use chalk to mark multiple circles in the water permeability detection area to facilitate the placement of the ground permeability detection device for highway maintenance, and then place the base 101 on the circle, and place the counterweight 104 on the load-bearing plate 109. Under the guidance of the support frame 103, the counterweight 104 overcomes the elastic force of the compression spring 110 through its own weight and drives the load-bearing plate 109 to move downward. When the load-bearing plate 109 moves downward, the load-bearing plate 109 drives the driving shaft 304 and the sliding rod 501 to move downward, and the sliding rod 50 1 moves in the sliding sleeve 502, and the driving shaft 304 pushes the bent plate 302 to move outward from the base 101 by cooperating with the inclined section 503. Under the guiding action of one of the guide grooves 107, the bent plate 302 drives one of the blocking plates 108 to move outward from the base 101, and one of the blocking plates 108 drives one of the fixed shafts 403 to move, and one of the fixed shafts 403 drives the rotating ring 401 to rotate through one of the inclined grooves 402. Under the guiding action of the remaining guide grooves 107, the rotating ring 401 drives the remaining blocking plates 108 to move outward from the base 101 synchronously through the cooperation of the remaining inclined grooves 402 and the fixed shaft 403, until the driving shaft 304 slides into the vertical section 504, and the plurality of blocking plates 108 The annular cavity 105 is synchronously moved away from each other and the annular cavity 105 is opened, and the slide rod 501 moves to the lower end of the slide sleeve 502, and the moving slide rod 501 pushes the annular piston 106 downward through the slide sleeve 502, and the annular piston 106 squeezes the sealing material downward, so that the sealing material is fully in contact with the inner wall of the annular cavity 105 and the road surface, so that the contact cavity 102 is sealed to prevent water from flowing out from the edge of the base 101 when the water injection test component 2 is testing the water injection into the contact cavity 102. After the road permeability test is completed, the counterweight 104 is removed, and under the guidance of the support frame 103, the compression spring 110 pushes the load-bearing plate 109 to move upward, and the load-bearing plate 109 drives the driving shaft 304 and the slide rod 501 to move upward, and the driving shaft 304 is first moved vertically. The annular cavity 105 moves upward in the inclined section 504, the sliding rod 501 moves upward in the sliding sleeve 502, the annular piston 106 does not squeeze the sealing material in the annular cavity 105, and the pressure at the lower end of the annular cavity 105 decreases until the driving shaft 304 slides into the inclined section 503. The driving shaft 304 pushes the bent plate 302 to move toward the inside of the base 101 through the cooperation with the inclined section 503. Under the guidance of one of the guide grooves 107, the bent plate 302 drives one of the blocking plates 108 to move toward the inside of the base 101. One of the blocking plates 108 drives one of the fixed shafts 403 to move in the opposite direction. One of the fixed shafts 403 drives the rotating ring 401 to reverse through one of the oblique grooves 402. Under the guidance of the remaining guide grooves 107,The rotating ring 401 drives the other blocking plates 108 to move synchronously toward the inside of the base 101 through the cooperation of the other oblique grooves 402 and the fixed shaft 403. The multiple blocking plates 108 move synchronously toward each other and close the annular cavity 105. The driving shaft 304 cooperates with the inclined section 503 and the vertical section 504 respectively. When the bearing plate 109 moves upward, the high pressure in the annular cavity 105 disappears first, and the blocking plate 108 closes the lower end of the annular cavity 105. After the high pressure in the annular cavity 105 disappears, the sealing material at the lower end of the annular cavity 105 will flow into the annular cavity 105. Internal reflux, thereby recycling the sealing material to the greatest extent, and the lower end of the annular cavity 105 is closed to prevent the sealing material from flowing out from the lower end of the annular cavity 105. After a road permeability test is completed, the present application does not need to apply the sealing material on the road surface in advance during the road permeability test, thereby simplifying the steps of the road permeability test, thereby improving the efficiency of the road permeability test, and when multiple blocking plates 108 move toward each other, the sealing material can be recycled, and then the sealing material can be reused, saving materials, and improving the utilization rate of the sealing material, without the need for test personnel to manually recycle the sealing material.

[0030] 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 and improvements made within the spirit and principles 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, comprising a base (101) and a contact cavity (102) arranged at the bottom of the base (101), characterized in that: Also includes: A support frame (103) is fixed at the upper end of the base (101), and a water injection test component (2) is arranged on the support frame (103), and the water injection test component (2) is used to inject water into the contact cavity (102); An annular cavity (105) is vertically arranged at the bottom of the base (101), the annular cavity (105) is located outside the contact cavity (102), an annular piston (106) is slidably connected inside the annular cavity (105), a plurality of guide grooves (107) are annularly arranged inside the base (101), and a sealing plate (108) is slidably connected inside each of the plurality of guide grooves (107); A load-bearing plate (109) is slidably connected to the support frame (103), a compression spring (110) is connected to the bottom of the load-bearing plate (109), an end of the compression spring (110) is fixed to the upper end of the base (101), and a counterweight (104) is arranged on the load-bearing plate (109); The bearing plate (109) is provided with a transmission mechanism (3), and in an initial state, the plurality of blocking plates (108) are closed and block the lower end of the annular cavity (105); when the bearing plate (109) moves downward, the transmission mechanism (3) drives the plurality of blocking plates (108) to move away from each other and open the lower end of the annular cavity (105); A pushing assembly (5) is provided at the lower end of the load-bearing plate (109); when the load-bearing plate (109) moves downward, the pushing assembly (5) drives the annular piston (106) to move downward.

2. The ground permeability detection device for highway maintenance according to claim 1, characterized in that: The water injection test assembly (2) comprises a measuring cylinder (201) fixed at the upper end of a support frame (103); the measuring cylinder (201) is connected to the contact cavity (102) via a connecting pipe (202); a check valve (203) is installed on the connecting pipe (202); an exhaust pipe (204) is installed on the contact cavity (102); and a sealing plug (205) is installed at the end of the exhaust pipe (204).

3. The ground permeability detection device for highway maintenance according to claim 1, characterized in that: The transmission mechanism (3) comprises a bent plate (302) fixed on the upper end of at least one blocking plate (108), and at least one driving shaft (304) fixed on the load-bearing plate (109); a clearance opening (301) for avoiding movement of the bent plate (302) is provided on the upper end of the base (101); a V-shaped slide groove (303) is provided on the bent plate (302); the driving shaft (304) is slidably connected in the V-shaped slide groove (303); a synchronization component (4) is provided in the base (101); the synchronization component (4) is used to drive the multiple blocking plates (108) to move synchronously towards each other or in the opposite direction.

4. The ground permeability detection device for highway maintenance according to claim 3, characterized in that: The synchronization component (4) comprises a rotating ring (401) rotatably connected in the base (101), the rotating ring (401) being located above the plurality of blocking plates (108), the rotating ring (401) being evenly and annularly provided with a plurality of oblique grooves (402), the upper ends of the plurality of blocking plates (108) being fixed with fixed shafts (403), the plurality of fixed shafts (403) being slidably connected in the plurality of oblique grooves (402) respectively.

5. The ground permeability detection device for highway maintenance according to claim 3, characterized in that: The pushing assembly (5) comprises a sliding rod (501) fixed at the lower end of the bearing plate (109), the lower end of the sliding rod (501) is slidably connected to a sliding sleeve (502), the distal end of the sliding sleeve (502) is fixed to the upper end of the annular piston (106), and the V-shaped sliding groove (303) comprises an inclined section (503) and a vertical section (504).

6. The ground permeability detection device for highway maintenance according to claim 1, characterized in that: An annular slide groove (601) is provided at the bottom of the base (101), an annular baffle plate (602) is slidably connected in the annular slide groove (601), a second compression spring (603) is fixed to the upper end of the annular baffle plate (602), the upper end of the second compression spring (603) is fixed in the annular slide groove (601), and the annular baffle plate (602) is located between the contact cavity (102) and the annular cavity (105).

7. The ground permeability detection device for highway maintenance according to claim 6, characterized in that: A horizontal sliding groove (701) is arranged in the support frame (103), a sliding block (702) is slidably connected in the sliding groove (701), a compression spring (703) is fixed to one end of the sliding block (702), the end of the compression spring (703) is fixed in the sliding groove (701), a limiting block (704) is fixed to the other end of the sliding block (702), a limiting groove (705) is arranged on the load-bearing plate (109), the limiting block (704) cooperates with the limiting groove (705), an unlocking component (8) is arranged on the annular baffle (602), when the annular baffle (602) moves upward, the unlocking component (8) overcomes the elastic force of the compression spring (703) and drives the sliding block (702) away from the limiting groove (705).

8. The ground permeability detection device for highway maintenance according to claim 7, characterized in that: The unlocking assembly (8) comprises a vertical push block (801) fixed to the upper end of the annular baffle (602), and an avoidance groove (802) provided on the sliding block (702), wherein an inclined push surface (803) is provided in the avoidance groove (802), and the upper end of the vertical push block (801) cooperates with the inclined push surface (803).

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