A pile foundation sampling device for building road bridges

Abstract

The application discloses a pile foundation sampling device for road and bridge construction and relates to the field of pile foundation sampling, which comprises a bottom plate, a drilling cylinder and a top block, the top block is located at the top end of the drilling cylinder, six plug-in grooves are uniformly arranged on the inner wall of the drilling cylinder, dehydration assemblies are inserted into the six plug-in grooves, the dehydration assemblies utilize the rotary power of the drilling cylinder and the axial feeding force of a sample core to remove water on the surface of the sample core, and the outer wall top end of the drilling cylinder is fixed with a first flange plate; a horizontal plate is movably sleeved on the outer wall of the top block through a bearing, and six arc-shaped positioning grooves are uniformly arranged on the lower surface of the top block, the application can realize simultaneous sampling and dehydration by utilizing the rotary power of the drilling cylinder and the axial feeding force of the sample core, can instantly scrape off water on the surface of the sample core and quickly pump out sewage in the drilling cylinder, so that the damage of water to the composition and structure of the sample core is avoided, and the accuracy of subsequent strength detection, composition analysis and other data is ensured.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of pile foundation sampling, in particular to a pile foundation sampling device for construction of roads and bridges. BACKGROUND

[0002] In the construction process of large infrastructures such as roads and bridges, pile foundation, as a basic component to bear the load of the overall structure, its construction quality is directly related to the safety and long-term stability of the entire project. If the pile foundation has defects or insufficient strength, it may lead to uneven settlement, structural cracking, even collapse and other serious consequences. Therefore, in order to ensure that the engineering quality meets the design requirements and safety standards, accurate, scientific and reliable sampling detection of pile foundation becomes an indispensable key link in the construction process.

[0003] A pile foundation detection core sampling device described in the prior art comprises a rack mechanism, including a base, a support is arranged on the top of the base, a driving part is arranged in the support, and a moving part is arranged on the outer side of the base; the base comprises a cylinder arranged at the bottom, the number of cylinders is two, the piston rod of the cylinder is fixedly connected with an extension rod, one end of the extension rod is fixedly connected with a clamping plate, and anti-skid protrusions are arranged on the inner wall of the clamping plate; a sampling mechanism comprises a support plate arranged on one side of the driving part, a first motor is arranged above the support plate, the output end of the first motor is fixedly connected with a rotating rod, the bottom of the rotating rod is fixedly connected with a connecting block, and the bottom of the connecting block is provided with a coring barrel.

[0004] The above-mentioned technology has the advantages of improving the core sampling efficiency, facilitating the movement and fixation, and cooling the drill bit, but the residual cooling water may cause the soluble substances on the surface of the sample core to dissolve and the bonding force between the aggregate and the cement paste to weaken, thereby causing the problem of distortion of the subsequent detection results, and the mixture of water and cutting debris will increase the frictional resistance between the sample core and the inner wall of the coring barrel. SUMMARY

[0005] Therefore, the present application aims to provide a pile foundation sampling device for construction of roads and bridges to solve the technical problems in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The utility model provides a kind of pile foundation sampling device for building road bridge, including bottom plate, drill cylinder and top block, the hole is opened in the bottom plate, the drill cylinder is located above hole, the top block is located at the top end of drill cylinder, the inner wall of drill cylinder is evenly provided with six insertion slots, six The water removal assembly is inserted in the insertion slot, the water removal assembly utilizes the rotary power of drill cylinder and the axial feed force of sample core, completes the moisture removal of sample core surface, the inner bottom wall of drill cylinder is evenly provided with six flow guide grooves, the wall of drill cylinder is located between six insertion slots It is provided with the through hole corresponding with flow guide groove, six The suction tube is inserted in the through hole.

[0008] The outer wall of the top block is movably provided with a horizontal plate through a bearing, the lower surface of the top block is evenly provided with six arc-shaped positioning grooves, the top block is provided with a through hole between the six positioning grooves, the top end of each suction tube is matched with the corresponding through hole, the top end of the top block is provided with a drainage guide assembly, the drainage guide assembly is used to drain and collect the sewage collected in the inner bottom wall of the drill cylinder, reducing the frictional resistance between the sample core and the inner wall of the drill cylinder, the outer wall of the top block is fixed with a second flange plate, and the first flange plate and the second flange plate are fixed by bolts.

[0009] Specifically, each water removal assembly includes an arc-shaped insertion plate, which is slidably connected with the insertion slot, a first mounting slot is formed in the wall body of the sample core facing the arc-shaped insertion plate, a resilient sheet is arranged in the first mounting slot, the fixed sheet of the resilient sheet is fixedly connected with the first mounting slot by screws, the opening of the resilient sheet faces upward, the movable sheet of the resilient sheet is arc-shaped and integrally provided with a fixed plate at the top, and a silica gel water scraping knife is fixed to the outer wall of the sample core facing the fixed plate.

[0010] Specifically, the movable sheet of the resilient sheet is evenly provided with three drainage holes at the bottom, and the cutting edge of the silica gel water scraping knife is provided with a micro-tooth structure.

[0011] Specifically, the top end of the arc-shaped insertion plate is integrally provided with a positioning arc plate, and the positioning arc plate is connected with the positioning slot.

[0012] Specifically, a second mounting slot is formed above the first mounting slot in the wall body of the sample core facing the arc-shaped insertion plate, an installation plate is fixed in the second mounting slot by screws, and a water-absorbing sponge is bonded to the outer wall of the sample core facing the installation plate.

[0013] Specifically, the drainage guide assembly includes a ring-shaped pipe, the ring-shaped pipe is fixed to the top end of the top block by a support, the lower surface of the ring-shaped pipe is evenly connected with six vertical pipes, the bottom end of the six vertical pipes is inserted into the through hole and connected with the top end of the corresponding suction tube in a sealed manner.

[0014] Specifically, the upper surface of the horizontal plate is symmetrically welded with L-shaped plates, the top end of each of the two L-shaped plates is fixed with a liquid storage tank through a screw, the inner wall of the liquid storage tank is installed with a water pump, the inner wall of the annular pipe is communicated with a hose, and the top end of the hose penetrates the tank wall and is communicated with the suction port of the water pump.

[0015] Specifically, the outer wall of the top block is fixed with a driven gear below the horizontal plate, the upper surface of the horizontal plate is installed with a driving motor on one side of one L-shaped plate through a screw, the output end of the driving motor extends to below through the horizontal plate, and the outer wall of the output end of the driving motor is fixed with a driving gear, and the tooth surface of the driving gear is meshed and connected with the tooth surface of the driven gear.

[0016] Specifically, the upper surface of the bottom plate is welded with vertical plates on both sides, each of the two vertical plates is provided with a guide sliding groove facing the outer wall of the drill cylinder, both ends of the horizontal plate are integrally fixed with sliding plates, the sliding plates are slidingly arranged in the guide sliding grooves, the upper surface of the bottom plate is fixed with hydraulic cylinders between the drill cylinder and the two vertical plates through bolts, and the telescopic ends of the two hydraulic cylinders are bolted with the lower surface of the horizontal plate.

[0017] Specifically, the upper surface of the bottom plate is fixed with a water tank on one side of the drill cylinder, the water tank is installed with a water pump, and a spray head communicated with the pipeline of the water pump is arranged above the hole near the water tank.

[0018] In summary, the present application mainly has the following advantages: by means of the dehydration assembly and the flow guide drainage assembly, the sample taking and dehydration are simultaneously performed by using the rotary power of the drill cylinder and the axial feeding force of the sample core, the water on the surface of the sample core can be scraped off in time and the sewage in the drill cylinder can be quickly pumped out, so that the damage of water to the composition and structure of the sample core is avoided, the accuracy of the data of subsequent strength detection, composition analysis and the like is ensured, and the timely discharge of the sewage and debris can reduce the friction resistance between the sample core and the inner wall of the drill cylinder, so that the sampling process is more smooth.

[0019] The dehydration assembly adopts plug-in design, which facilitates replacement of worn parts, ensures the stability and reliability of dehydration effect, and the flow guide drainage assembly also realizes centralized collection and recycling of the cooling sewage, avoids waste of water resources, and reduces water consumption in construction. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the device of the present application;

[0021] Figure 2 It is a schematic diagram of the separation structure of the drill cylinder, the top block and the flow guide drainage assembly of the present application;

[0022] Figure 3It is a schematic view of the profile structure of the drilling cylinder of the application.

[0023] Figure 4 It is a schematic view of the dehydration assembly structure of the application.

[0024] Figure 5 It is a schematic view of the top block and horizontal plate structure of the application.

[0025] Figure 6 It is a schematic view of the top block from below of the application.

[0026] Figure 7 It is a schematic view of the drainage assembly from below of the application.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, bottom plate; 101, water tank; 102, hole; 103, vertical plate; 1031, guiding sliding groove; 104, hydraulic cylinder; 105, horizontal plate; 1051, sliding plate; 2, L-shaped plate; 3, drilling cylinder; 301, plug-in slot; 302, first flange plate; 303, guiding groove; 304, through hole; 4, dehydration assembly; 401, arc-shaped plug-in plate; 402, first mounting slot; 403, second mounting slot; 404, elastic sheet; 4041, fixed plate; 4042, silica gel scraping knife; 4043, liquid discharge hole; 405, mounting plate; 4051, water-absorbing sponge; 406, positioning arc plate; 5, suction pipe; 6, top block; 601, positioning slot; 602, perforation; 603, second flange plate; 604, driven gear; 7, drainage assembly; 701, annular pipe; 702, vertical pipe; 703, hose; 704, liquid storage tank; 8, driving motor; 801, driving gear. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the application, and cannot be understood as limitations to the application.

[0029] The embodiments of the application will be described below according to the overall structure of the application.

[0030] It should be noted that all the electric elements in the application are electrically connected with external power supply and are operated through control switches, and meanwhile, clear indicator lights and control buttons are arranged on the operation panel of the device, so that the operating personnel can know the working state of the electric elements in real time and operate accordingly according to the actual situation.

[0031] In the embodiment, please refer to Figure 1 - Figure 7As shown, a kind of pile sampling device for building road bridge, including bottom plate 1, drill cylinder 3 and top block 6, the lower surface of bottom plate 1 four corners is also equipped with moving wheel, it is convenient to move, bottom plate 1 is equipped with hole 102, drill cylinder 3 is located above hole 102, top block 6 is located at the top of drill cylinder 3, the upper surface of bottom plate 1 is located at the side of drill cylinder 3 and is fixed with water tank 101, water pump is installed in water tank 101, the place near water tank 101 above hole 102 is equipped with the spray head communicated with water pump pipeline, six insertion slots 301 are evenly provided on the inner wall of drill cylinder 3, six insertion slots 301 are inserted into dehydration assembly 4, dehydration assembly 4 utilizes the rotary power of drill cylinder 3 and the axial feed force of sample core, and the moisture removal of sample core surface is completed, six flow guide grooves 303 are evenly provided on the inner bottom wall of drill cylinder 3, the cylinder wall of drill cylinder 3 is located between six insertion slots 301 and is equipped with the through hole 304 corresponding to flow guide groove 303, six through holes 304 are inserted into suction tube 5, and the outer wall top of drill cylinder 3 is fixed with first flange plate 302;

[0032] The outer wall of top block 6 is movably provided with horizontal plate 105 through bearing, the lower surface of top block 6 is evenly provided with six arc-shaped positioning grooves 601, the top of top block 6 is evenly provided with perforations 602 between six positioning grooves 601, the top of each suction tube 5 is matched with corresponding perforation 602, the top of top block 6 is provided with flow guide drainage assembly 7, flow guide drainage assembly 7 is used to pump out and collect the sewage gathered in the inner bottom wall of drill cylinder 3, reduce the frictional resistance between sample core and the inner wall of drill cylinder 3, the outer wall of top block 6 is fixed with second flange plate 603, and first flange plate 302 and second flange plate 603 are fixed by bolts;

[0033] The outer wall of top block 6 is movably provided with driven gear 604 below horizontal plate 105, the upper surface of horizontal plate 105 is movably provided with driving motor 8 on one side of L-shaped plate 2 through screw, the output end of driving motor 8 extends to the lower side through horizontal plate 105, and the output end of driving motor 8 is movably provided with driving gear 801, the tooth surface of driving gear 801 is movably provided with driven gear 604, the upper surface of bottom plate 1 is movably provided with vertical plate 103 on both sides, the outer wall of two vertical plates 103 is movably provided with guide sliding groove 1031, both ends of horizontal plate 105 are integrally provided with sliding plate 1051, sliding plate 1051 is movably provided in guide sliding groove 1031, and hydraulic cylinder 104 is movably provided on the upper surface of bottom plate 1 between drill cylinder 3 and two vertical plates 103 through bolts, and the telescopic end of two hydraulic cylinders 104 is movably provided with the lower surface of horizontal plate 105 through bolts.

[0034] Before sampling the pile foundation of the road and bridge, the operator moves the device to the sampling point of the pile foundation, aligns the hole 102 of the bottom plate 1 with the sampling center, ensures that the axis of the drill cylinder 3 is vertically aligned with the sampling point, and then starts the sampling program through the external controller to drive the motor 8 to work, the output end drives the driving gear 801 to rotate, the gear meshing transmission drives the driven gear 604 to rotate, and then drives the top block 6 and the drill cylinder 3 to rotate synchronously around the axis of the drill cylinder 3, while the two hydraulic cylinders 104 are synchronously retracted, the horizontal plate 105 is driven to move downward through the telescopic end, the horizontal plate 105 slides downward along the guide sliding groove 1031 of the vertical plate 103 through the sliding plate 1051, drives the rotating drill cylinder 3 and the top block 6 to move downward synchronously, so that the bottom of the rotating drill cylinder 3 contacts the surface of the pile foundation, and the sample core enters the inside of the drill cylinder 3 along the axis of the drill cylinder 3 under the action of the cutting force, which makes the water pump in the water tank 101 work, and water is transported to the spray head above the hole 102 through the pipeline, and the spray head continuously sprays water to the drilling area of the drill cylinder 3, so as to reduce the cutting temperature and dust suppression.

[0035] When the sample core enters the inside of the drill cylinder 3, the dehydration assembly 4 starts to work as the drill cylinder 3 rotates and the sample core axially feeds, the silica gel water scraping knife 4042 scrapes the water on the surface of the sample core, and the water absorbing sponge 4051 absorbs part of the residual water, so as to ensure that the water on the surface of the sample core is removed as much as possible, avoid the dissolution of soluble substances on the surface of the sample core, and weaken the adhesion between the aggregate and the cement paste.

[0036] At the same time, the water diversion and drainage assembly 7 works to pump out the sewage gathered at the bottom of the drill cylinder 3 and transport it to the liquid storage tank 704 for centralized collection, which not only avoids the damage of water to the composition and structure of the sample core and ensures the accuracy of subsequent strength detection data, but also timely discharges sewage and debris, effectively reduces the friction resistance between the sample core and the inner wall of the drill cylinder 3, and makes the whole sampling process more smooth and efficient.

[0037] When the sampling depth reaches the preset value, the external controller successively closes the water pump in the water tank 101 and the driving motor 8, stops the water spraying and the rotation of the drill cylinder 3, and then controls the extension of the telescopic end of the hydraulic cylinder 104 to drive the horizontal plate 105, the drill cylinder 3 and the top block 6 to reset upward synchronously until the drill cylinder 3 completely separates from the surface of the pile foundation, the operator disassembles the bolts between the first flange plate 302 and the second flange plate 603, separates the top block 6 from the drill cylinder 3, and then takes out the complete sample core in the drill cylinder 3 for subsequent quality detection and analysis work.

[0038] Please refer to Figure 4As shown, each dehydration assembly 4 comprises an arc-shaped insertion plate 401, the top end of the arc-shaped insertion plate 401 is integrally provided with a positioning arc plate 406, the positioning arc plate 406 is connected with the positioning groove 601 in a plug-in manner, the arc-shaped insertion plate 401 is connected with the plug-in groove 301 in a plug-in and sliding manner, the arc-shaped insertion plate 401 is provided with a first installation groove 402 on the bottom of the wall body of the sample core, the first installation groove 402 is provided with an elastic sheet 404 with an angle of 30°, the fixed sheet of the elastic sheet 404 is fixedly connected with the first installation groove 402 through a screw, the opening of the elastic sheet 404 faces upward, the movable sheet of the elastic sheet 404 is arc-shaped and integrally provided with a fixed plate 4041 at the top, the fixed plate 4041 is fixedly provided with a silica gel water scraping knife 4042 on the outer wall of the sample core, the movable sheet of the elastic sheet 404 is uniformly provided with three liquid discharge holes 4043 at the bottom, and the cutting edge of the silica gel water scraping knife 4042 is provided with a micro-tooth structure.

[0039] The arc-shaped insertion plate 401 is provided with a second installation groove 403 above the first installation groove 402 on the wall body of the sample core, the second installation groove 403 is fixedly provided with an installation plate 405 through a screw, and the installation plate 405 is adhesively provided with a water-absorbing sponge 4051 on the outer wall of the sample core.

[0040] When the sample core enters the inside of the drill cylinder 3 along the axis of the drill cylinder 3, the elastic sheet 404 is arranged with an upward opening at an angle of 30°, so that the sample core entering generates a radial thrust on the movable sheet of the elastic sheet 404, and in combination with the centrifugal force generated by the rotation of the drill cylinder 3, the movable sheet of the elastic sheet 404 is tightly attached to the surface of the sample core, and the micro-tooth silica gel water scraping knife 4042 on the top fixed plate 4041 performs spiral scraping movement with the rotation of the drill cylinder 3, and the water on the surface of the sample core and the attached mud are scraped off, and in the scraping process, part of the water is gathered in the included angle between the movable sheet and the fixed sheet of the elastic sheet 404, and flows downward through the three liquid discharge holes 4043, and with the continuous upward movement of the sample core, the surface of the sample core is further contacted with the water-absorbing sponge 4051 after being scraped by the silica gel water scraping knife 4042, the water-absorbing sponge 4051 further absorbs the residual water on the surface of the sample core, reduces the water content on the surface of the sample core, and the water-absorbing sponge 4051 is soft in texture and will not cause damage to the surface of the sample core while absorbing water, thereby ensuring the integrity of the sample core;

[0041] During the whole sampling process, the silica gel water scraping knife 4042 and the water-absorbing sponge 4051 cooperate with each other, the silica gel water scraping knife 4042 first scrapes off most of the water, and the water-absorbing sponge 4051 then finely absorbs the residual water, and the two work together to greatly improve the dehydration effect;

[0042] Since the dehydration assembly 4 adopts the plug-in design, if the silica gel squeegee 4042 or the water absorption sponge 4051 is worn or reaches the service life, the operator can conveniently and quickly take out the arc-shaped plug plate 401 from the plug-in slot 301, replace the new silica gel squeegee 4042 or the water absorption sponge 4051, and ensure that the dehydration assembly 4 can still maintain good dehydration effect when sampling next time.

[0043] Please refer to Figure 2 and Figure 7 As shown in the drawings, the flow guide drainage assembly 7 comprises an annular pipe 701 fixed on the top end of the top block 6 through a support, the lower surface of the annular pipe 701 is uniformly connected with six vertical pipes 702, the bottom ends of the six vertical pipes 702 are inserted into the perforations 602 and are in plug-in sealed connection with the top ends of the corresponding suction pipes 5, the upper surface of the horizontal plate 105 is symmetrically welded with two L-shaped plates 2, the top ends of the two L-shaped plates 2 are fixed with liquid storage tanks 704 through screws, the inner wall of the liquid storage tank 704 is installed with a water pump, the inner wall of the annular pipe 701 is communicated with a hose 703, and the top end of the hose 703 penetrates the tank wall of the liquid storage tank 704 and is communicated with the suction port of the water pump.

[0044] When the sample core is drilled, the external controller synchronously starts the water pump in the liquid storage tank 704, forms a negative pressure suction force in the annular pipe 701 through the hose 703, and acts on the vertical pipe 702 and the suction pipe 5, the sewage gathered on the bottom wall of the drill cylinder 3 enters the flow guide groove 303, enters the vertical pipe 702 and the annular pipe 701 through the suction force generated by the bottom pipe opening of the suction pipe 5, and is transported into the liquid storage tank 704 through the hose 703, so that the sewage and the debris are concentratedly collected, the sewage and the debris in the drill cylinder 3 are discharged in time, the frictional resistance between the sample core and the inner wall of the drill cylinder 3 is reduced, the drill cylinder 3 rotates more smoothly, the wear and tear and energy consumption of the equipment are reduced, meanwhile, the concentratedly collected sewage can be treated subsequently, water resources are recycled and utilized, and the construction cost is reduced.

[0045] The working principle of the present application is:

[0046] Before sampling the pile foundation of the road and bridge, the operator moves the device to the sampling point of the pile foundation, aligns the hole 102 of the bottom plate 1 with the sampling center, ensures that the axis of the drill cylinder 3 is vertically aligned with the sampling point, and then starts the sampling program through the external controller to drive the motor 8 to work, the output end drives the driving gear 801 to rotate, the gear meshing transmission drives the driven gear 604 to rotate, and then drives the top block 6 and the drill cylinder 3 to rotate synchronously around the axis, while the two hydraulic cylinders 104 are synchronously retracted, the horizontal plate 105 is driven to move downward through the telescopic end, the horizontal plate 105 slides downward along the guide sliding groove 1031 of the vertical plate 103 through the sliding plate 1051, drives the rotating drill cylinder 3 and the top block 6 to move downward synchronously, so that the bottom of the rotating drill cylinder 3 contacts the surface of the pile foundation, and the sample core enters the inside of the drill cylinder 3 along the axis of the drill cylinder 3 under the action of the cutting force, which makes the water pump in the water tank 101 work, and the water is transported to the spray head above the hole 102 through the pipeline, and the spray head continuously sprays water to the drilling area of the drill cylinder 3, so as to reduce the cutting temperature and dust suppression;

[0047] When the sample core enters the inside of the drill cylinder 3, the rotation of the drill cylinder 3 and the axial feeding of the sample core make the sample core enter the radial thrust of the movable piece of the elastic sheet 404, and combine the centrifugal force generated by the rotation of the drill cylinder 3 to make the movable piece of the elastic sheet 404 tightly adhere to the surface of the sample core, and the micro-toothed silica gel water scraping knife 4042 on the top fixed plate 4041 makes spiral scraping movement with the rotation of the drill cylinder 3, and scrapes off the water on the surface of the sample core and the attached mud, and in the scraping process, part of the water will gather in the included angle between the movable piece and the fixed piece of the elastic sheet 404, and will flow downward through the three liquid discharge holes 4043, and with the continuous upward movement of the sample core, the surface of the sample core will also contact the water-absorbing sponge 4051 after being scraped by the silica gel water scraping knife 4042, and the water-absorbing sponge 4051 further absorbs the water on the surface of the sample core, reducing the water content on the surface of the sample core;

[0048] When drilling the sample core, the sewage gathered in the inner bottom wall of the drill cylinder 3 will enter the flow guide groove 303, the external controller synchronously starts the water pump in the liquid storage tank 704, forms negative pressure suction force in the annular pipe 701 through the hose 703, and acts on the vertical pipe 702 and the suction pipe 5, the suction force generated by the bottom pipe of the suction pipe 5 enters the vertical pipe 702 and the annular pipe 701, and is then transported to the liquid storage tank 704 through the hose 703, realizing the centralized collection of sewage and debris;

[0049] When the sampling depth reaches the preset value, the external controller successively turns off the water pump and the driving motor 8 in the water tank 101, stops the water spraying and the rotation of the drill cylinder 3, then controls the extension of the telescopic end of the hydraulic cylinder 104, drives the horizontal plate 105, the drill cylinder 3 and the top block 6 to synchronously reset upwards until the drill cylinder 3 completely separates from the surface of the pile foundation, the operator dismounts the bolts between the first flange plate 302 and the second flange plate 603, separates the top block 6 from the drill cylinder 3, and then the complete sample core in the drill cylinder 3 can be taken out for subsequent quality detection and analysis work.

[0050] Although the embodiments of the present application have been shown and described, the specific embodiments are merely illustrative of the present application, and are not intended to limit the present application, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, as long as they are within the scope of the claims of the present application.

Claims

1. A pile foundation sampling device for road and bridge construction, comprising a base plate (1), a drill cylinder (3), and a top block (6), wherein the base plate (1) has a hole (102), the drill cylinder (3) is located above the hole (102), and the top block (6) is located at the top of the drill cylinder (3), characterized in that, The inner wall of the drill cylinder (3) is uniformly provided with six insertion grooves (301), and six dehydration assemblies (4) are inserted into the six insertion grooves (301), the dehydration assemblies (4) remove water on the surface of the sample core by using the rotary power of the drill cylinder (3) and the axial feeding force of the sample core, the inner bottom wall of the drill cylinder (3) is uniformly provided with six flow guide grooves (303), the wall of the drill cylinder (3) between the six insertion grooves (301) is provided with through holes (304) corresponding to the flow guide grooves (303), and six suction pipes (5) are inserted into the six through holes (304). The outer wall of the top block (6) is movably sleeved with a horizontal plate (105) through a bearing, the lower surface of the top block (6) is uniformly provided with six arc-shaped positioning grooves (601), the top block (6) is provided with a perforation (602) between the six positioning grooves (601), the top end of each suction pipe (5) is matched with the corresponding perforation (602), and the top end of the top block (6) is provided with a flow guide and drainage assembly (7) for pumping out and collecting sewage gathered on the inner bottom wall of the drill cylinder (3) and reducing the frictional resistance between the sample core and the inner wall of the drill cylinder (3). Each dehydration assembly (4) comprises an arc-shaped insertion plate (401), the arc-shaped insertion plate (401) is slidably connected with the insertion groove (301), a first mounting groove (402) is formed in the wall body bottom of the arc-shaped insertion plate (401) and faces the sample core, an elastic sheet (404) with an angle of 30° is arranged in the first mounting groove (402), the fixed sheet of the elastic sheet (404) is fixedly connected with the first mounting groove (402) through a screw, the opening of the elastic sheet (404) faces upward, the movable sheet of the elastic sheet (404) is arc-shaped and integrally provided with a fixed plate (4041) at the top, and a silica gel water scraping knife (4042) is fixed to the outer wall of the fixed plate (4041) and faces the sample core. The flow guide and drainage assembly (7) comprises an annular pipe (701), the annular pipe (701) is fixed to the top end of the top block (6) through a support, the lower surface of the annular pipe (701) is uniformly connected with six vertical pipes (702), the bottom end of each vertical pipe (702) is inserted into the perforation (602) and is in sealing connection with the top end of the corresponding suction pipe (5).

2. A pile foundation sampling device for constructing a road bridge according to claim 1, wherein The movable sheet of the elastic sheet (404) is uniformly provided with three drainage holes (4043) at the bottom, and the cutting edge of the silica gel water scraping knife (4042) is provided with a micro-tooth structure.

3. A pile foundation sampling device for constructing a road bridge according to claim 1, characterized in that, The top end of the arc-shaped insertion plate (401) is integrally provided with a positioning arc plate (406), and the positioning arc plate (406) is in insertion connection with the positioning groove (601).

4. A pile foundation sampling device for constructing a road bridge according to claim 1, characterized in that, The arc-shaped plug-in plate (401) is provided with a second mounting groove (403) above the first mounting groove (402) and facing the wall of the sample core, a mounting plate (405) is fixed in the second mounting groove (403) by screws, and a water-absorbing sponge (4051) is attached to the outer wall of the sample core and faces the mounting plate (405).

5. A pile foundation sampling device for constructing a road bridge according to claim 1, characterized in that, The upper surface of the horizontal plate (105) is symmetrically welded with L-shaped plates (2), the top end of each of the two L-shaped plates (2) is fixed with a liquid storage tank (704) through screws, a water pump is installed on the inner wall of the liquid storage tank (704), the inner wall of the annular pipe (701) is communicated with a hose (703), and the top end of the hose (703) penetrates the tank wall of the liquid storage tank (704) and is communicated with the suction port of the water pump.

6. A pile foundation sampling device for constructing a road bridge according to claim 1, characterized in that, The outer wall of the top block (6) is fixed with a driven gear (604) below the horizontal plate (105), one side of the upper surface of the horizontal plate (105) is installed with a driving motor (8) through screws, the output end of the driving motor (8) extends to the lower side through the horizontal plate (105), and the output end of the driving motor (8) is fixed with a driving gear (801), and the tooth surface of the driving gear (801) is meshed and connected with the tooth surface of the driven gear (604).

7. A pile foundation sampling device for constructing a road bridge according to claim 1, characterized in that, The upper surface of the bottom plate (1) is welded with vertical plates (103) on both sides, the outer wall of each of the two vertical plates (103) is provided with a guide sliding groove (1031) facing the outer wall of the drill cylinder (3), both ends of the horizontal plate (105) are integrally fixed with sliding plates (1051), the sliding plates (1051) are slidingly arranged in the guide sliding grooves (1031), and the upper surface of the bottom plate (1) is fixed with hydraulic cylinders (104) between the drill cylinder (3) and the two vertical plates (103) through bolts, and the telescopic ends of the two hydraulic cylinders (104) are bolted with the lower surface of the horizontal plate (105).

8. A pile foundation sampling device for constructing a road bridge according to claim 1, characterized in that, The upper surface of the bottom plate (1) is fixed with a water tank (101) on one side of the drill cylinder (3), a water pump is installed in the water tank (101), and a nozzle is arranged above the hole (102) and close to the water tank (101) and communicated with the pipeline of the water pump.

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