A road construction sampling core device

Abstract

The embodiment of the present application provides a road construction sampling core device, which relates to the technical field of sampling devices. A road construction sampling core device includes a movable support plate, the top of the movable support plate is fixedly connected to a fixed plate, and the top of the fixed plate is fixedly connected to a guide rail. In the present invention, the sampling rotor squeezes the trapezoidal block during the descent process, and the trapezoidal block pushes the push plate through the U-shaped push frame, and the push plate presses the lower pressure seat downward, and the lower pressure seat pushes the lower pressure push rod to descend, and the lower pressure push rod pushes the lower pressure plate downward through the connecting rod, and the lower pressure plate pushes the extrusion rod to descend, so that the support column drives the friction disk to contact the ground, effectively avoiding the deviation of the device and maintaining the efficiency of core sampling. The support column drives the connecting frame to descend, and the connecting frame drives the mud guard to contact the ground. When sampling, the mud outlet pipe discharges the mixture of water and soil into the collection box for collection, which can shield the sewage generated during the rotation of the sampling rotor to prevent the sewage from splashing onto the construction personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of sampling devices, and in particular relates to a road construction sampling core device. Background Art

[0002] After the road construction is completed, samples are usually taken from the road, and the samples are inspected and analyzed to determine whether the quality of the road is qualified. The coring machine is a new type of construction machinery that can coring cement concrete, asphalt concrete, and limestone. Some sampling devices on the market can only drill holes in the ground. After drilling, the staff needs to use other devices to take the soil out of the hole, and then use other devices to preserve the soil. This method requires the coordinated use of multiple devices from drilling to maintaining samples, and the sampling cost is relatively high.

[0003] In the prior art (publication number CN116539359B, patent name A road construction sampling core device), by setting the sampling tube and the sleeve to cooperate, when sampling starts, the water pump is started to inject water into the sampling tube, and the sampling tube rotates and moves downward, extending into the ground through the sampling knife, and the rotation of the sampling tube will close the suction mechanism in the sampling tube to limit the entry of mud and water, and when the sampling tube moves downward relative to the sleeve, negative pressure will be generated inside the suction mechanism. After the rotation of the sampling tube stops, the sampling tube stops rotating to open the suction mechanism, and the negative pressure inside the suction mechanism is used to draw the mixture of water and soil into the gap defined between the inner wall of the sampling tube and the sample core, increasing the friction between the inner wall of the sampling tube and the sampling core, so that the sample core can be synchronously taken out when the sampling tube moves upward to prevent the sample core from remaining underground. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] When sampling, the drill rod is prone to shaking, which can easily lead to the breakage of the drill rod. At the same time, due to the shaking during drilling, the sample in the sampling tube is easy to loosen, causing the sample to fall and fail, affecting the sampling efficiency. The sample core is easy to detach from the coring device after drilling and embed in the borehole of the original road surface, making coring difficult and requiring the use of additional tools, which reduces the coring efficiency. The external water supply mechanism cannot work simultaneously with the motor, and an independent water pump needs to be set up, which not only has low mechanical efficiency, but also increases the manufacturing cost of the equipment. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems in the prior art, that is, the drill rod is prone to shaking and an independent water pump needs to be provided. To this end, the present application proposes a road construction sampling core device.

[0006] To achieve the above object, the specific technical scheme of the present invention is as follows: a road construction sampling core device, comprising a mobile support plate, a fixed plate fixedly connected to the top of the mobile support plate, a guide rail fixedly connected to the top of the fixed plate, a slider slidably connected to the inner wall of the guide rail, a placement plate fixedly connected to the side wall of the slider, a spiral rotating rod threadedly connected to the threaded hole of the placement plate, and further comprising:

[0007] A negative pressure mechanism, the negative pressure mechanism includes a mounting frame fixedly connected to the top of a placement plate, a servo motor is fixedly connected to the inner wall of the mounting frame, a rotating rod is fixedly connected to the output end of the servo motor, a rotating disk is fixedly connected to the end of the rotating rod away from the servo motor, two rotating shafts are fixedly connected to the side wall of the rotating disk, the outer walls of the two rotating shafts are rotatably connected to bearings, a mounting box is fixedly connected to the bottom of the placement plate, a hose is fixedly connected to the inner wall of the mounting box, and the outer wall of the hose is arranged in contact with the outer wall of the bearing.

[0008] Preferably, a support mechanism is provided on the top of the fixed plate, and the support mechanism includes a support plate fixedly connected to the top of the fixed plate, the side wall of the support plate is fixedly connected to a fixed sliding rod, the outer wall of the fixed sliding rod is slidably connected to a trapezoidal block, the side wall of the support plate is fixedly connected to a connecting spring, the end of the connecting spring away from the support plate is fixedly connected to the side wall of the trapezoidal block, the side wall of the trapezoidal block is fixedly connected to a U-shaped push rack, the side wall of the U-shaped push rack is rotatably connected to a push plate, the end of the push plate away from the U-shaped push rack is rotatably connected to a lower pressure seat, and the side wall of the lower pressure seat is rotatably connected to a lower pressure push rod.

[0009] Preferably, the side wall of the movable support plate is fixedly connected to a hinge seat, the side wall of the hinge seat is rotatably connected to a lower pressure plate, the inner wall of the lower pressure plate is fixedly connected to a connecting rod, the end of the lower pressure push rod away from the lower pressure seat is rotatably connected to the outer wall of the connecting rod, the side wall of the lower pressure plate is provided with a slot, the inner wall of the slot is slidably connected to an extrusion rod, the outer wall of the extrusion rod is fixedly connected to a support column, the support column passes through the top of the fixed plate and extends to the outside, and the bottom of the support column is fixedly connected to a friction disk.

[0010] Preferably, the outer wall of the support column is provided with a waste discharge mechanism, and the waste discharge mechanism includes a connecting frame fixedly connected to the outer wall of the support column, the side wall of the connecting frame is fixedly connected with a mud guard tube, the outer wall of the mud guard tube is fixedly connected with a mud outlet pipe, the bottom of the fixed plate is fixedly connected with a placement rack, and a collection box is placed on the top of the placement rack.

[0011] Preferably, a positioning mechanism is provided on the inner wall of the fixed plate, and the positioning mechanism includes a positioning slide column fixedly connected to the inner wall of the fixed plate, the outer wall of the positioning slide column is slidably connected to the positioning plate, the inner wall of the fixed plate is fixedly connected to a return spring, one end of the return spring away from the positioning slide column is fixedly connected to the side wall of the positioning plate, and the interior of the positioning plate is rollingly connected to a positioning ball.

[0012] Preferably, the outer wall of the rotating rod is provided with a lifting mechanism, and the lifting mechanism includes a sprocket 1 fixedly connected to the outer wall of the rotating rod, the side wall of the sprocket 1 is meshingly connected with a chain, the inner wall of the chain is transmission-connected with a sprocket 2, and the central axis of the sprocket 2 is fixedly connected with a rotating column, and the rotating column passes through the top of the placement plate and extends to the outside.

[0013] Preferably, a cross slide groove is provided on the outer wall of the rotating column, a cross is slidably connected to the inner wall of the cross slide groove, a sampling rotor is fixedly connected to the side wall of the cross, an L-shaped slide column is fixedly connected to the top of the sampling rotor, a reciprocating cylinder is fixedly connected to the bottom of the placement plate, a lifting reciprocating groove is provided on the inner wall of the reciprocating cylinder, and the inner wall of the lifting reciprocating groove is slidably connected to the outer wall of the L-shaped slide column.

[0014] Preferably, the interior of the rotating column is hollowed out, and a water spray mechanism is provided inside the sampling rotor, the water spray mechanism includes a water absorption chamber opened on the inside of the sampling rotor, the rotating column passes through the top of the sampling rotor and extends to the inside of the water absorption chamber, a piston is fixedly connected to the outer wall of the rotating column, the outer wall of the piston is slidably connected to the inner wall of the water absorption chamber, the top of the rotating column is fixedly connected to a water pipe, a water bucket is provided outside the water pipe, the bottom of the water bucket is fixedly connected to the top of the fixed plate, and a water outlet is opened at the bottom end of the rotating column.

[0015] Preferably, the inner wall of the water absorption chamber is fixedly connected with a sliding rod, the outer wall of the sliding rod is slidably connected with a sealing ball, the outer wall of the sealing ball is fixedly connected with a torsion spring, the end of the torsion spring away from the sliding rod is fixedly connected to the inner wall of the water absorption chamber, a through hole is opened inside the sampling rotor, the inner wall of the through hole is fixedly connected with an annular fixing plate, the top of the annular fixing plate is fixedly connected with a coil spring, and the end of the coil spring away from the annular fixing plate is fixedly connected to the sealing plate.

[0016] Preferably, the inner wall of the hose is provided with an adsorption assembly, and the adsorption assembly includes an adsorption tube fixedly connected to the inner wall of the left end of the hose, the end of the adsorption tube away from the hose is fixedly connected to an annular box, the inner wall of the annular box is slidably connected to an annular convex plate, the inner wall of the annular convex plate is fixedly connected to the outer wall of the sampling rotor, the inner wall of the sampling rotor is fixedly connected to the adsorption box, and the bottom of the adsorption box is fixedly connected to the adsorption telescopic tube.

[0017] Preferably, the inner wall of the hose is provided with a clamping assembly, and the clamping assembly includes an exhaust pipe fixedly connected to the inner wall of the right end of the hose, the exhaust pipe is fixedly connected to an annular box 2 at one end away from the hose, the inner wall of the annular box 2 is slidably connected to an annular convex plate 2, the inner wall of the annular convex plate 2 is fixedly connected to the outer wall of the sampling rotor, an air inlet hole is opened inside the sampling rotor, an air inlet cavity is opened on the inner wall of the sampling rotor, the inner wall of the air inlet cavity is connected to the inner wall of the air inlet hole, and an expansion airbag is fixedly connected to the inner wall of the air inlet cavity.

[0018] A road construction sampling core device of the present invention has the following advantages:

[0019] 1. For the road construction sampling core device, when sampling is needed, the staff rotates the spiral rotating rod to make the placement plate drive the sampling rotor to descend. The sampling rotor squeezes the trapezoidal block during the descent process. The trapezoidal block pushes the push plate through the U-shaped push frame. The push plate presses the lower pressure seat downward. The lower pressure seat pushes the lower pressure push rod to descend. The lower pressure push rod pushes the lower pressure plate downward through the connecting rod. The lower pressure plate pushes the squeezing rod downward, so that the support column drives the friction disk to contact the ground, effectively avoiding the deviation of the device and maintaining the efficiency of core sampling. The support column drives the connecting frame to descend. The connecting frame drives the mud guard tube to contact the ground. When sampling, the mud outlet pipe discharges the mixture of water and mud into the collection box for collection. It can shield the sewage generated during the rotation of the sampling rotor to prevent the sewage from splashing onto the construction workers. When the sampling rotor passes through the positioning plate, rolling friction is generated between the sampling rotor and the positioning ball during sampling. The reset spring can make the positioning plate drive the positioning ball to closely contact with the sampling rotor, thereby realizing the positioning of the sampling rotor, thereby preventing the sampling rotor from deviating during rotation, and ensuring the stability of the sampling process.

[0020] 2. In the pavement construction sampling core device, when sampling, the servo motor drives the rotating rod to rotate, the rotating rod drives sprocket one to rotate, sprocket one drives sprocket two to rotate through the chain, sprocket two drives the rotating column to rotate, the rotating column drives the cross and the sampling rotor to rotate, the sampling rotor drives the L-shaped sliding column to move in the lifting reciprocating groove, so that the L-shaped sliding column pulls the sampling rotor to reciprocate up and down, and the sampling rotor reciprocates up and down during the rotation process, which can effectively improve the sampling efficiency, and can ensure successful sampling, increase the integrity of the sample core, and the reciprocating lifting of the sampling rotor can buffer the sampling rotor, which can reduce the damage of the sampling rotor.

[0021] 3. The road construction sampling core device, when the sampling rotor rises, the sampling rotor drives the torsion spring and the sealing ball to rise, the sealing ball seals the water outlet, after the sampling rotor continues to rise, the piston pushes the gas in the water absorption chamber into the through hole, the discharged gas pushes the sealing plate down to discharge the gas, when the sampling rotor descends, the sealing plate seals the through hole, thereby generating negative pressure in the water absorption chamber, when the sealing ball releases the blockage of the water outlet, the water in the bucket is sucked into the rotating column through the negative pressure generated in the water absorption chamber, and the water is discharged from the water outlet into the water absorption chamber, when the sampling rotor reciprocates and rises and falls, the water can be discharged from the through hole to the inner wall of the sampling rotor, the speed of water discharge can be adjusted by the rotation speed of the sampling rotor, the water output during the coring operation can be controlled, and excessive watering can be avoided so that more water is generated in and near the pits left after the sample core is taken out.

[0022] 4. The road construction sampling core device, when drilling, the rotating rod drives the rotating disk to rotate forward, and when sampling, the servo motor drives the rotating rod and the rotating disk to rotate counterclockwise, and the rotating disk drives the bearing to move through the rotating shaft. The bearing can squeeze the hose, so that one end of the hose can inlet air and the other end can outlet air. When the drill core in the sampling rotor contacts the adsorption telescopic tube, the hose inhales gas through the adsorption tube to generate negative pressure. The negative pressure sucks the sample core tightly onto the adsorption telescopic tube, and draws a mixture of water and soil into the gap between the sampling rotor and the sample core, further increasing the friction and ensuring the efficiency of taking out the sample core. The other end of the hose discharges the gas into the air inlet through the exhaust pipe, and the gas enters the air inlet cavity and inflates the expansion airbag. The inflated expansion airbag clamps the sample core, and the expansion airbag can prevent the sample core from breaking during clamping, ensuring that the sample core can be smoothly taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

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

[0025] Figure 2 It is a schematic diagram of the structure of the movable support plate of the present invention;

[0026] Figure 3 A half-section view of the support mechanism structure of the present invention;

[0027] Figure 4 For the present invention Figure 3 A magnified view of the structure at center;

[0028] Figure 5 It is a schematic diagram of the top structure of the fixing plate of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the negative pressure mechanism of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the waste discharge mechanism and the positioning mechanism of the present invention;

[0031] Figure 8 It is a schematic diagram of the lifting mechanism structure of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the water spraying mechanism of the present invention;

[0033] Fig.10 For the present invention Fig. 9 A magnified view of the structure at B in the middle;

[0034] Fig.11 It is a cross-sectional view of the sampling rotor structure of the present invention;

[0035] Fig.12 For the present invention Fig.11 Enlarged view of the structure at point C in the middle.

[0036] Explanation of the markings in the figure: 101, movable support plate; 102, fixed plate; 103, guide rail; 104, slider; 105, placement plate; 106, spiral rod; 2, support mechanism; 201, support plate; 202, fixed slide rod; 203, connecting spring; 204, trapezoidal block; 205, U-shaped push frame; 206, push plate; 207, lower pressure seat; 208, lower pressure push rod; 21, hinge seat; 22, lower pressure plate; 23, connecting rod; 24, notch; 25, Extrusion rod; 26, support column; 27, friction disc; 3, negative pressure mechanism; 301, mounting frame; 302, servo motor; 303, rotating rod; 304, rotating disc; 305, rotating shaft; 306, bearing; 307, mounting box; 308, hose; 4, waste discharge mechanism; 401, connecting frame; 402, mud guard tube; 403, mud outlet pipe; 404, placement frame; 405, collection box; 5, positioning mechanism; 501, positioning slide column; 502, return spring; 503, positioning plate; 504, positioning ball; 6, lifting mechanism; 601, sprocket wheel 1; 602, chain; 603, sprocket wheel 2; 604, rotating column; 605, cross slide; 606, cross; 607, sampling rotor; 608, L-shaped slide column; 609, reciprocating cylinder; 610, lifting reciprocating groove; 7, water spraying mechanism; 701, water absorption chamber; 702, piston; 703, slide rod; 704, torsion spring; 705, blocking ball; 706, pass Hole; 707, annular fixing plate; 708, spiral spring; 709, blocking plate; 71, water pipe; 72, water bucket; 73, water outlet; 8, adsorption component; 801, adsorption tube; 802, annular box one; 803, annular convex plate one; 804, adsorption box; 805, adsorption telescopic tube; 9, clamping component; 901, exhaust pipe; 902, annular box two; 903, annular convex plate two; 904, air inlet; 905, air inlet cavity; 906, expansion airbag. DETAILED DESCRIPTION

[0037] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0038] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0041] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0042] like Figures 1 to 6 As shown, a road construction sampling core device of the present invention comprises a mobile support plate 101, a fixed plate 102 is fixedly connected to the top of the mobile support plate 101, a guide rail 103 is fixedly connected to the top of the fixed plate 102, a slider 104 is slidably connected to the inner wall of the guide rail 103, a placement plate 105 is fixedly connected to the side wall of the slider 104, a screw rod 106 is threadedly connected to the threaded hole of the placement plate 105, and further comprises:

[0043] The negative pressure mechanism 3 includes a mounting frame 301 fixedly connected to the top of the placement plate 105, the inner wall of the mounting frame 301 is fixedly connected to a servo motor 302, the output end of the servo motor 302 is fixedly connected to a rotating rod 303, the end of the rotating rod 303 away from the servo motor 302 is fixedly connected to a rotating disk 304, the side wall of the rotating disk 304 is fixedly connected to two rotating shafts 305, the outer walls of the two rotating shafts 305 are rotatably connected to bearings 306, the bottom of the placement plate 105 is fixedly connected to a mounting box 307, the inner wall of the mounting box 307 is fixedly connected to a hose 308, the outer wall of the hose 308 is arranged in contact with the outer wall of the bearing 306, such an arrangement is for the servo motor 302 to drive the rotating rod 303 and the rotating disk 304 to rotate, the rotating disk 304 drives the bearing 306 to move through the rotating shaft 305, the bearing 306 can squeeze the hose 308, so that the hose 308 can take in air at one end and exhaust air at the other end.

[0044] A support mechanism 2 is provided on the top of the fixed plate 102, and the support mechanism 2 includes a support plate 201 fixedly connected to the top of the fixed plate 102, a fixed slide bar 202 is fixedly connected to the side wall of the support plate 201, a trapezoidal block 204 is slidably connected to the outer wall of the fixed slide bar 202, and a connecting spring 203 is fixedly connected to the side wall of the support plate 201, and one end of the connecting spring 203 away from the support plate 201 is fixedly connected to the side wall of the trapezoidal block 204. This arrangement is for the trapezoidal block 204 to reset, and the side wall of the trapezoidal block 204 It is fixedly connected with a U-shaped pushing frame 205, and the side wall of the U-shaped pushing frame 205 is rotatably connected with a pushing plate 206, and one end of the pushing plate 206 away from the U-shaped pushing frame 205 is rotatably connected with a lower pressing seat 207, and the side wall of the lower pressing seat 207 is rotatably connected with a lower pressing push rod 208. In this way, when the sampling rotor 607 squeezes the trapezoidal block 204 during the descending process, the trapezoidal block 204 pushes the pushing plate 206 through the U-shaped pushing frame 205, and the pushing plate 206 presses the lower pressing seat 207 downward, and the lower pressing seat 207 pushes the lower pressing push rod 208 to descend.

[0045] The side wall of the movable support plate 101 is fixedly connected with an articulated seat 21, and the side wall of the articulated seat 21 is rotatably connected with a lower pressure plate 22. The inner wall of the lower pressure plate 22 is fixedly connected with a connecting rod 23. The end of the lower pressure push rod 208 away from the lower pressure seat 207 is rotatably connected to the outer wall of the connecting rod 23. A slot 24 is opened on the side wall of the lower pressure plate 22, and an extrusion rod 25 is slidably connected to the inner wall of the slot 24. The outer wall of the extrusion rod 25 is fixedly connected with a support column 26. The support column 26 passes through the top of the fixed plate 102 and extends to the outside. The bottom of the support column 26 is fixedly connected with a friction disk 27. This arrangement is to enable the lower pressure push rod 208 to push the lower pressure plate 22 down through the connecting rod 23, and the lower pressure plate 22 pushes the extrusion rod 25 down, so that the support column 26 drives the friction disk 27 to contact the ground, effectively avoiding the deviation of the device and maintaining the efficiency of core sampling.

[0046] like Figures 7 to 10 As shown, the outer wall of the support column 26 is provided with a waste discharge mechanism 4, and the waste discharge mechanism 4 includes a connecting frame 401 fixedly connected to the outer wall of the support column 26, the side wall of the connecting frame 401 is fixedly connected with a mud retaining tube 402, the outer wall of the mud retaining tube 402 is fixedly connected with a mud discharge pipe 403, the bottom of the fixed plate 102 is fixedly connected with a placement frame 404, and a collecting box 405 is placed on the top of the placement frame 404. This arrangement is for the support column 26 to drive the connecting frame 401 to descend, and the connecting frame 401 drives the mud retaining tube 402 to contact the ground. When sampling, the mud discharge pipe 403 discharges a mixture of water and soil into the collecting box 405 for collection, which can shield the sewage generated during the rotation of the sampling rotor 607 to prevent the sewage from splashing onto the construction workers.

[0047] The inner wall of the fixed plate 102 is provided with a positioning mechanism 5, and the positioning mechanism 5 includes a positioning slide post 501 fixedly connected to the inner wall of the fixed plate 102, and the outer wall of the positioning slide post 501 is slidably connected to the positioning plate 503, and the inner wall of the fixed plate 102 is fixedly connected to a return spring 502, and the end of the return spring 502 away from the positioning slide post 501 is fixedly connected to the side wall of the positioning plate 503, and the interior of the positioning plate 503 is rollingly connected with a positioning ball 504. This arrangement is that the sampling rotor 607 passes through the positioning plate 503, and rolling friction is generated between the sampling rotor 607 and the positioning ball 504 during sampling. The return spring 502 can make the positioning plate 503 drive the positioning ball 504 to be in close contact with the sampling rotor 607, thereby realizing the positioning of the sampling rotor 607, thereby preventing the sampling rotor 607 from running off during rotation, and ensuring the stability of the sampling process.

[0048] The outer wall of the rotating rod 303 is provided with a lifting mechanism 6, and the lifting mechanism 6 includes a sprocket 1 601 fixedly connected to the outer wall of the rotating rod 303, the side wall of the sprocket 1 601 is meshingly connected with a chain 602, the inner wall of the chain 602 is transmission-connected with a sprocket 2 603, and the central axis of the sprocket 2 603 is fixedly connected with a rotating column 604, and the rotating column 604 passes through the top of the placement plate 105 and extends to the outside. This arrangement is for the sprocket 1 601 to drive the sprocket 2 603 to rotate through the chain 602, and the sprocket 2 603 drives the rotating column 604 to rotate.

[0049] A cross slot 605 is provided on the outer wall of the rotating column 604, and a cross 606 is slidably connected to the inner wall of the cross slot 605, so that the rotating column 604 drives the cross 606 to rotate through the cross slot 605, and the side wall of the cross 606 is fixedly connected to a sampling rotor 607, and the top of the sampling rotor 607 is fixedly connected to an L-shaped slide column 608, and the bottom of the placement plate 105 is fixedly connected to a reciprocating cylinder 609, and a lifting reciprocating slot 610 is provided on the inner wall of the reciprocating cylinder 609, and the inner wall of the lifting reciprocating slot 610 is slidably connected to the outer wall of the L-shaped slide column 608. This is designed so that the sampling rotor 607 drives the L-shaped slide column 608 to move in the lifting reciprocating slot 610, so that the L-shaped slide column 608 pulls the sampling rotor 607 to reciprocate up and down, so that the sampling rotor 607 reciprocates up and down during the rotation process, which can effectively improve the sampling efficiency.

[0050] The interior of the rotating column 604 is hollowed out to allow water to enter the rotating column 604. A water spray mechanism 7 is provided inside the sampling rotor 607. The water spray mechanism 7 includes a water absorption chamber 701 opened on the inside of the sampling rotor 607. The rotating column 604 passes through the top of the sampling rotor 607 and extends to the inside of the water absorption chamber 701. The outer wall of the rotating column 604 is fixedly connected to a piston 702. The outer wall of the piston 702 is slidably connected to the inner wall of the water absorption chamber 701. The top of the rotating column 604 is fixedly connected to a water pipe 71. A water bucket 72 is provided outside the water pipe 71. The bottom of the water bucket 72 is fixedly connected to the top of the fixed plate 102. A water outlet 73 is provided at the bottom end of the rotating column 604.

[0051] The inner wall of the water absorption chamber 701 is fixedly connected with a sliding rod 703, and the outer wall of the sliding rod 703 is slidably connected with a blocking ball 705, and the outer wall of the blocking ball 705 is fixedly connected with a torsion spring 704, and the end of the torsion spring 704 away from the sliding rod 703 is fixedly connected to the inner wall of the water absorption chamber 701, and a through hole 706 is opened inside the sampling rotor 607, and the inner wall of the through hole 706 is fixedly connected with an annular fixing plate 707, and the top of the annular fixing plate 707 is fixedly connected with a coil spring 708, and the end of the coil spring 708 away from the annular fixing plate 707 is fixedly connected with a blocking plate 709.

[0052] like Figure 11 to Figure 12As shown, the inner wall of the hose 308 is provided with an adsorption component 8, and the adsorption component 8 includes an adsorption tube 801 fixedly connected to the inner wall of the left end of the hose 308, and the end of the adsorption tube 801 away from the hose 308 is fixedly connected to an annular box 802, and the inner wall of the annular box 802 is slidably connected to an annular convex plate 803, and the inner wall of the annular convex plate 803 is fixedly connected to the outer wall of the sampling rotor 607, and the inner wall of the sampling rotor 607 is fixedly connected to an adsorption box 804, and the bottom of the adsorption box 804 is fixedly connected to the adsorption telescopic tube 805. In this arrangement, when the drill core in the sampling rotor 607 contacts the adsorption telescopic tube 805, the hose 308 inhales gas through the adsorption tube 801 to generate negative pressure, and the negative pressure sucks the sample core tightly onto the adsorption telescopic tube 805, and draws a mixture of water and soil into the gap between the sampling rotor 607 and the sample core, further increasing the friction and ensuring the efficiency of removing the sample core.

[0053] like Fig.12 As shown, the existing sample core is easy to be separated from the coring device after drilling and embedded in the drilled hole of the original road surface, which makes coring difficult and requires the use of additional tools, reducing the coring efficiency. The inner wall of the hose 308 is provided with a clamping assembly 9, and the clamping assembly 9 includes an exhaust pipe 901 fixedly connected to the inner wall of the right end of the hose 308, and the end of the exhaust pipe 901 away from the hose 308 is fixedly connected to the annular box 902, and the inner wall of the annular box 902 is slidably connected to the annular convex plate 903, and the inner wall of the annular convex plate 903 is fixedly connected to the outer wall of the sampling rotor 607. An air inlet hole 904 is provided inside the sample rotor 607, and an air inlet cavity 905 is provided on the inner wall of the sampling rotor 607. The inner wall of the air inlet cavity 905 is connected to the inner wall of the air inlet hole 904, and an expansion airbag 906 is fixedly connected to the inner wall of the air inlet cavity 905. The other end of the hose 308 discharges the gas into the air inlet hole 904 through the exhaust pipe 901. The gas enters the air inlet cavity 905 and expands the expansion airbag 906. The expanded expansion airbag 906 clamps the sample core, and the expansion airbag 906 can prevent the sample core from being broken during clamping, thereby ensuring that the sample core can be smoothly taken out.

[0054] A working principle of a road construction sampling core device: when sampling is needed, the staff rotates the spiral rotating rod 106, so that the placement plate 105 drives the sampling rotor 607 to descend, and the sampling rotor 607 squeezes the trapezoidal block 204 during the descent process, and the trapezoidal block 204 pushes the push plate 206 through the U-shaped push frame 205, and the push plate 206 presses the lower pressure seat 207 downward, and the lower pressure seat 207 pushes the lower pressure push rod 208 to descend, and the lower pressure push rod 208 pushes the lower pressure plate 22 to descend through the connecting rod 23, and the lower pressure plate 22 pushes the squeezing rod 25 to descend, so that the support column 26 drives the friction disk 27 to contact with the ground, effectively avoiding the deviation of the device and maintaining the efficiency of core sampling, and the support column 26 drives the connecting frame 401 is lowered, and the connecting frame 401 drives the mud guard tube 402 to contact the ground. When sampling, the mud outlet pipe 403 discharges the mixture of water and mud into the collection box 405 for collection, which can shield the sewage generated during the rotation of the sampling rotor 607 to prevent the sewage from splashing onto the construction personnel. When the sampling rotor 607 passes through the positioning plate 503, rolling friction is generated between the sampling rotor 607 and the positioning ball 504 during sampling. The reset spring 502 can make the positioning plate 503 drive the positioning ball 504 to closely contact with the sampling rotor 607, thereby realizing the positioning of the sampling rotor 607, thereby preventing the sampling rotor 607 from deviating during rotation, and ensuring the stability of the sampling process;

[0055] During sampling, the servo motor 302 drives the rotating rod 303 to rotate, the rotating rod 303 drives the sprocket wheel 1 601 to rotate, the sprocket wheel 1 601 drives the sprocket wheel 2 603 to rotate through the chain 602, the sprocket wheel 2 603 drives the rotating column 604 to rotate, the rotating column 604 drives the cross 606 and the sampling rotor 607 to rotate, the sampling rotor 607 drives the L-shaped sliding column 608 to move in the lifting reciprocating groove 610, so that the L-shaped sliding column 608 pulls the sampling rotor 607 to reciprocate up and down, so that the sampling rotor 607 reciprocates up and down during the rotation process, which can effectively improve the sampling efficiency, and can ensure successful sampling, increase the integrity of the sample core, and the reciprocating lifting of the sampling rotor 607 can buffer the sampling rotor 607, which can reduce the damage of the sampling rotor 607;

[0056] When the sampling rotor 607 rises, the sampling rotor 607 drives the torsion spring 704 and the blocking ball 705 to rise, and the blocking ball 705 blocks the water outlet 73. After the sampling rotor 607 continues to rise, the piston 702 pushes the gas in the water absorption chamber 701 into the through hole 706, and the discharged gas pushes the blocking plate 709 to descend to discharge the gas. When the sampling rotor 607 descends, the blocking plate 709 blocks the through hole 706, thereby generating a negative pressure in the water absorption chamber 701. When the blocking ball 705 When the blockage of the water outlet 73 is released, the water in the water bucket 72 is sucked into the rotating column 604 through the negative pressure generated in the water absorption chamber 701, and the water is discharged from the water outlet 73 into the water absorption chamber 701. When the sampling rotor 607 reciprocates and moves up and down, the water can be discharged from the through hole 706 to the inner wall of the sampling rotor 607. The speed of water discharge can be adjusted by the rotation speed of the sampling rotor 607, and the water output during the coring operation can be controlled to avoid excessive watering, which may cause more water to accumulate in and around the pit left after the sample core is taken out.

[0057] When drilling, the rotating rod 303 drives the rotating disk 304 to rotate forward. When sampling, the servo motor 302 drives the rotating rod 303 and the rotating disk 304 to rotate reversely. The rotating disk 304 drives the bearing 306 to move through the rotating shaft 305. The bearing 306 can squeeze the hose 308, so that one end of the hose 308 can be inlet and the other end can be outlet. When the drill core in the sampling rotor 607 contacts the adsorption telescopic tube 805, the hose 308 inhales gas through the adsorption tube 801 to generate negative pressure, and the negative pressure pushes the sample core It is sucked tightly onto the adsorption telescopic tube 805, and the mixture of water and soil is drawn into the gap between the sampling rotor 607 and the sample core to further increase the friction force and ensure the efficiency of removing the sample core. The other end of the hose 308 discharges the gas into the air inlet 904 through the exhaust pipe 901. The gas enters the air inlet cavity 905 and inflates the expansion airbag 906. The inflated expansion airbag 906 clamps the sample core. The expansion airbag 906 can prevent the sample core from breaking during clamping, ensuring that the sample core can be smoothly taken out.

[0058] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention.

Claims

1. A road construction sampling core device, comprising a movable support plate (101), the top of the movable support plate (101) is fixedly connected to a fixed plate (102), the top of the fixed plate (102) is fixedly connected to a guide rail (103), the inner wall of the guide rail (103) is slidably connected to a slider (104), the side wall of the slider (104) is fixedly connected to a placement plate (105), and the threaded hole of the placement plate (105) is threadedly connected to a spiral rotating rod (106), characterized in that: Also includes: A negative pressure mechanism (3), the negative pressure mechanism (3) comprising a mounting frame (301) fixedly connected to the top of a placement plate (105), the inner wall of the mounting frame (301) being fixedly connected to a servo motor (302), the output end of the servo motor (302) being fixedly connected to a rotating rod (303), one end of the rotating rod (303) away from the servo motor (302) being fixedly connected to a rotating disk (304), the side wall of the rotating disk (304) being fixedly connected to two rotating shafts (305), the outer walls of the two rotating shafts (305) being rotatably connected to bearings (306), the bottom of the placement plate (105) being fixedly connected to a mounting box (307), the inner wall of the mounting box (307) being fixedly connected to a hose (308), the outer wall of the hose (308) being arranged in contact with the outer wall of the bearing (306); A support mechanism (2) is provided on the top of the fixed plate (102), and the support mechanism (2) comprises a support plate (201) fixedly connected to the top of the fixed plate (102); a fixed sliding rod (202) is fixedly connected to the side wall of the support plate (201); a trapezoidal block (204) is slidably connected to the outer wall of the fixed sliding rod (202); a connecting spring (203) is fixedly connected to the side wall of the support plate (201); an end of the connecting spring (203) away from the support plate (201) is fixedly connected to the side wall of the trapezoidal block (204); a U-shaped push frame (205) is fixedly connected to the side wall of the trapezoidal block (204); a push plate (206) is rotatably connected to the side wall of the U-shaped push frame (205); an end of the push plate (206) away from the U-shaped push frame (205) is rotatably connected to a lower pressing seat (207); and a lower pressing push rod (208) is rotatably connected to the side wall of the lower pressing seat (207); The side wall of the movable support plate (101) is fixedly connected to an articulated seat (21), the side wall of the articulated seat (21) is rotatably connected to a lower pressure plate (22), the inner wall of the lower pressure plate (22) is fixedly connected to a connecting rod (23), one end of the lower pressure push rod (208) away from the lower pressure seat (207) is rotatably connected to the outer wall of the connecting rod (23), a notch (24) is provided on the side wall of the lower pressure plate (22), an extrusion rod (25) is slidably connected to the inner wall of the notch (24), the outer wall of the extrusion rod (25) is fixedly connected to a support column (26), the support column (26) passes through the top of the fixed plate (102) and extends to the outside, and the bottom of the support column (26) is fixedly connected to a friction disk (27); The inner wall of the fixed plate (102) is provided with a positioning mechanism (5), the positioning mechanism (5) comprising a positioning slide post (501) fixedly connected to the inner wall of the fixed plate (102), the outer wall of the positioning slide post (501) being slidably connected to a positioning plate (503), the inner wall of the fixed plate (102) being fixedly connected to a return spring (502), one end of the return spring (502) away from the positioning slide post (501) being fixedly connected to a side wall of the positioning plate (503), and a positioning ball (504) being rollingly connected inside the positioning plate (503); The outer wall of the rotating rod (303) is provided with a lifting mechanism (6), and the lifting mechanism (6) comprises a sprocket wheel 1 (601) fixedly connected to the outer wall of the rotating rod (303); the side wall of the sprocket wheel 1 (601) is meshingly connected with a chain (602); the inner wall of the chain (602) is drivingly connected with a sprocket wheel 2 (603); the central axis of the sprocket wheel 2 (603) is fixedly connected with a rotating column (604); the rotating column (604) passes through the top of the placement plate (105) and extends to the outside; The outer wall of the rotating column (604) is provided with a cross groove (605), the inner wall of the cross groove (605) is slidably connected to a cross (606), the side wall of the cross (606) is fixedly connected to a sampling rotor (607), the top of the sampling rotor (607) is fixedly connected to an L-shaped sliding column (608), the bottom of the placement plate (105) is fixedly connected to a reciprocating cylinder (609), the inner wall of the reciprocating cylinder (609) is provided with a lifting reciprocating groove (610), and the inner wall of the lifting reciprocating groove (610) is slidably connected to the outer wall of the L-shaped sliding column (608); The interior of the rotating column (604) is hollowed out, and a water spray mechanism (7) is provided inside the sampling rotor (607). The water spray mechanism (7) includes a water absorption chamber (701) provided inside the sampling rotor (607). The rotating column (604) passes through the top of the sampling rotor (607) and extends into the water absorption chamber (701). A piston (702) is fixedly connected to the outer wall of the rotating column (604). The outer wall of the piston (702) is slidably connected to the inner wall of the water absorption chamber (701). The top of the rotating column (604) is fixedly connected to a water pipe (71). A water bucket (72) is provided outside the water pipe (71). The bottom of the water bucket (72) is fixedly connected to the top of the fixed plate (102). A water outlet hole (73) is provided at the bottom end of the rotating column (604). The inner wall of the water absorption chamber (701) is fixedly connected to a sliding rod (703), the outer wall of the sliding rod (703) is slidably connected to a blocking ball (705), the outer wall of the blocking ball (705) is fixedly connected to a torsion spring (704), the end of the torsion spring (704) away from the sliding rod (703) is fixedly connected to the inner wall of the water absorption chamber (701), a through hole (706) is opened inside the sampling rotor (607), the inner wall of the through hole (706) is fixedly connected to an annular fixing plate (707), the top of the annular fixing plate (707) is fixedly connected to a coil spring (708), and the end of the coil spring (708) away from the annular fixing plate (707) is fixedly connected to a blocking plate (709).

2. A road construction sampling core device according to claim 1, characterized in that: The outer wall of the support column (26) is provided with a waste discharge mechanism (4), the waste discharge mechanism (4) comprising a connecting frame (401) fixedly connected to the outer wall of the support column (26), a mud retaining cylinder (402) fixedly connected to the side wall of the connecting frame (401), a mud discharge pipe (403) fixedly connected to the outer wall of the mud retaining cylinder (402), a placement frame (404) fixedly connected to the bottom of the fixed plate (102), and a collection box (405) placed on the top of the placement frame (404).

3. A road construction sampling core device according to claim 1, characterized in that: The inner wall of the hose (308) is provided with an adsorption assembly (8), and the adsorption assembly (8) comprises an adsorption tube (801) fixedly connected to the inner wall of the left end of the hose (308), and the end of the adsorption tube (801) away from the hose (308) is fixedly connected to an annular box (802), and the inner wall of the annular box (802) is slidably connected to an annular convex plate (803), and the inner wall of the annular convex plate (803) is fixedly connected to the outer wall of the sampling rotor (607), and the inner wall of the sampling rotor (607) is fixedly connected to an adsorption box (804), and the bottom of the adsorption box (804) is fixedly connected to an adsorption telescopic tube (805).

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