Concrete sampling device for highway construction

Abstract

The invention relates to the technical field of engineering construction, in particular to a concrete sampling device for highway construction, which comprises a sample storage box with a spherical structure, a bidirectional swing mechanism arranged on the outer side of the sample storage box, a piston sampling pump arranged below the sample storage box, and a length-adjustable telescopic sampling pipe communicated with the bottom of the piston sampling pump, one side of the piston sampling pump is communicated with an output pipe, the top of the output pipe is rotatably communicated with the two-way swing mechanism, a rotary communication assembly is arranged between the sample storage box and the two-way swing mechanism, and the power unit is arranged between the two-way swing mechanism and the piston sampling pump; the power unit comprises a servo motor, a rotary connecting assembly and a lifting connecting assembly, wherein the rotary connecting assembly and the lifting connecting assembly are synchronously driven by the servo motor. The device automatically samples, keeps a concrete sample in a motion state in real time, keeps the fluidity of the concrete sample, fully utilizes kinetic energy, and is energy-saving and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, in particular to a concrete sampling device for highway construction. Background Art

[0002] Concrete is needed in the process of highway construction. Concrete, referred to as concrete, is a general term for engineering composite materials that are cemented into a whole by cementitious materials. The term concrete usually refers to cement as a cementitious material, sand and stone as aggregates, and water in a certain proportion. The cement concrete is also called ordinary concrete. In the process of highway construction, it is necessary to take core samples of the concrete after construction to check the quality of the concrete core of the cast-in-place pile, such as the cementation of the concrete core, strength, presence of pores, segregation or broken piles, etc.

[0003] The existing patent authorization number is: CN211317789U, which discloses a concrete sampling device for road construction, including a corer, high-strength wear-resistant rings are welded on both sides of the bottom of the corer, drill teeth are provided at the bottom of the high-strength wear-resistant rings, a drill rod is welded at the axis of the top of the corer, a power mechanism is clamped at the top of the drill rod, a pneumatic mechanism is welded at the top of the corer inner cavity, and a cutting mechanism is embedded at the bottom of the two walls of the corer, and the pneumatic mechanism drives the cutting mechanism. The device solves the problem that the current sampling device cannot separate the concrete core from its root during the drilling sampling process, and the operator needs to perform a secondary operation by setting the corer, drill rod, power mechanism, pneumatic mechanism and cutting mechanism to cooperate with each other. After analyzing the device, it can be found that: since concrete will solidify in a short time after processing, the concrete placed after highway construction generally needs to be sampled and inspected before it is completely solidified. Therefore, it is necessary to pay attention to the sampling speed to prevent the long sampling time from affecting the test results of the concrete; in addition, since the concrete at different depths has a large difference in its state after construction, it is necessary to have a good depth adjustment ability when conducting sampling inspections; when the existing sampling device is used, the output of concrete lacks the ability to prevent solidification, which is easy to affect the fluidity of concrete, and the output of concrete by some devices and the mixing power sources are independent of each other and lack connection, resulting in large overall operation energy consumption;

[0004] Therefore, in view of the above-mentioned problems, the present technical solution proposes a concrete sampling device for highway construction. Summary of the invention

[0005] The object of the present invention is to provide a concrete sampling device for highway construction to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a concrete sampling device for highway construction, comprising a sample storage box with a spherical structure, used to store extracted concrete samples, and a bidirectional swing mechanism is arranged on the outer side of the sample storage box, used to drive the sample storage box to rotate continuously in two directions, so as to keep the concrete sample input into the sample storage box in a flowing state at all times and prevent it from solidifying;

[0007] The piston sampling pump is arranged below the sample storage box. The bottom of the piston sampling pump is connected with a telescopic sampling tube with adjustable length. By inserting the telescopic sampling tube into the concrete after the highway construction to be sampled, the concrete is sucked into the piston sampling pump along the telescopic sampling tube under the pumping of the piston sampling pump according to the sampling depth. An output pipe is connected to one side of the piston sampling pump. The top of the output pipe is rotationally connected to the two-way swing mechanism. A rotating connecting component is arranged between the sample storage box and the two-way swing mechanism. The concrete delivered to the two-way swing mechanism is transferred to the sample storage box for storage under the transmission of the rotating connecting component.

[0008] The power unit is arranged between the bidirectional swing mechanism and the piston sampling pump. The power unit includes a servo motor and a rotating connection component and a lifting connection component synchronously driven by the servo motor. The top of the rotating connection component is connected to the bidirectional swing mechanism to drive the bidirectional swing mechanism to rotate. The bottom of the lifting connection component is connected to the piston sampling pump to control the operation of the piston sampling pump, thereby realizing the function of driving concrete sampling and flow storage by a single set of motors.

[0009] Compared with the prior art, the invention has the following beneficial effects: by providing a telescopic sampling tube with adjustable length, inserting it into concrete of different depths, and then using a piston sampling pump for automatic sampling, it can ensure that the concrete can be collected and stored in a short time;

[0010] By placing the concrete sample in the sample storage box for storage, and arranging a bidirectional swing mechanism on the outside of the sample storage box, the sample storage box is controlled to rotate circumferentially and axially, so as to keep the concrete in a moving state during storage and prevent it from solidifying;

[0011] By arranging a power unit driven by a single motor between the sample storage box and the telescopic sampling tube, the power unit is used to drive the sample storage box to rotate in both directions, and the piston sampling pump is controlled to drive the telescopic sampling tube to perform sampling, the connection advantages between the structures are fully utilized, the utilization rate of kinetic energy is improved, and the energy consumption of the device during operation is greatly reduced to a certain extent, thereby reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure is a three-dimensional structural schematic diagram of a concrete sampling device for highway construction.

[0013] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a concrete sampling device for highway construction equipped with an adjustment component.

[0014] Figure 3 The present invention is a schematic diagram of the main structure of a concrete sampling device for highway construction equipped with an adjustment component.

[0015] Figure 4 The figure is a schematic diagram of the top view of a concrete sampling device for highway construction.

[0016] Figure 5 The present invention is a schematic diagram of the structure of a sample storage box in a concrete sampling device for highway construction.

[0017] Figure 6 for Figure 1 Schematic diagram of the enlarged structure of A.

[0018] Figure 7 for Figure 3 Schematic diagram of the enlarged structure of B.

[0019] Figure 8 for Figure 1 Schematic diagram of the enlarged structure of C in the figure.

[0020] Fig. 9 It is a schematic diagram of the internal partial structure of a concrete transfer groove ring in a concrete sampling device for highway construction;

[0021] Wherein: sample storage box 10, telescopic sampling tube 11, end cone tube 12, piston sampling pump 13, output tube 14, lower connecting plate 15, adjusting screw 16, rotating handle 17, upper connecting plate 18, servo motor 19, active helical gear 20, auxiliary helical gear 1 21, auxiliary helical gear 2 22, support rod 23, screw 24, nut 25, L-shaped piston rod 26, piston plate 27, concrete inlet 28, concrete outlet 29, sealing plate 30, concrete transfer groove ring 31, concrete output end tube 32, guide plate 33, transmission tube 34, rotating transmission hole 35, output port 36, connecting block 37, rotating connecting tube 39, outer gear ring 40, connecting rod 41, sleeve ring 42, bevel gear 1 43, bevel gear 2 44, spur gear positioning plate 45, spur gear 46, support column 47. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] See also Figure 1-Figure 4 A concrete sampling device for highway construction includes a sample storage box 10 with a spherical structure for storing extracted concrete samples. A bidirectional swing mechanism is provided on the outside of the sample storage box 10 for driving the sample storage box 10 to rotate continuously in two directions, so as to keep the concrete sample input into the sample storage box 10 in a flowing state at all times and prevent it from solidifying.

[0027] The piston sampling pump 13 is arranged below the sample storage box 10. The bottom of the piston sampling pump 13 is connected with a telescopic sampling tube 11 with adjustable length. By inserting the telescopic sampling tube 11 into the concrete after the highway construction to be sampled, the concrete is sucked into the piston sampling pump 13 along the telescopic sampling tube 11 under the pumping of the piston sampling pump 13 according to the sampling depth. One side of the piston sampling pump 13 is connected with an output pipe 14. The top of the output pipe 14 is rotationally connected with the two-way swing mechanism. A rotating connecting component is arranged between the sample storage box 10 and the two-way swing mechanism. The concrete delivered to the two-way swing mechanism is transferred to the sample storage box 10 for storage under the transmission of the rotating connecting component.

[0028] The power unit is arranged between the bidirectional swing mechanism and the piston sampling pump 13. The power unit includes a servo motor 19 and a rotating connection component and a lifting connection component synchronously driven by the servo motor 19. The top of the rotating connection component is connected to the bidirectional swing mechanism to drive the bidirectional swing mechanism to rotate. The bottom of the lifting connection component is connected to the piston sampling pump 13 to control the operation of the piston sampling pump 13, thereby realizing the function of driving concrete sampling and flow storage by a single set of motors.

[0029] In the embodiment of the present invention, refer to Figure 5 The outer wall of the sample storage box 10 is provided with an output port 36, and a cover plate is detachably mounted on the output port 36. The cover plate and the output port 36 can be mounted in a hinged or clamped manner, and the specific selection is determined according to actual requirements;

[0030] The bottom end of the telescopic sampling tube 11 is connected to an end cone tube 12, and a plurality of feed holes are evenly opened on the circumferential outer wall of the end cone tube 12. Under the action of the pump suction inside the telescopic sampling tube 11, the feed holes placed inside the concrete are used to take materials;

[0031] The output pipe 14 is provided with a control valve for controlling the flow of concrete inside the output pipe 14. At the same time, the bottom end of the output pipe 14 is connected to the lower part of the side wall of the piston sampling pump 13, and the top end is set as an L-shaped structure and is rotatably connected to the bidirectional swing mechanism;

[0032] See also Figure 7 A piston plate 27 is provided in a lifting and sliding manner inside the piston sampling pump 13, and the middle part of the top of the piston plate 27 is fixedly connected to the lifting connection component. A concrete inlet 28 is provided at the bottom of the piston sampling pump 13, and the bottom of the concrete inlet 28 is connected to the top of the telescopic sampling tube 11. A concrete outlet 29 is provided on the outer wall of the piston sampling pump 13 corresponding to the bottom end of the output pipe 14. A sealing plate 30 is elastically swingably installed on the upper side of the concrete inlet 28, and a sealing plate 30 is also elastically swingably installed on the outer wall of the concrete outlet 29. When the lifting connection component controls the piston plate 27 to rise, the sealing plate 30 at the concrete inlet 28 swings upward to control the concrete inlet 28 to open, and the concrete The sealing plate 30 at the soil outlet 29 is forced to close the concrete outlet 29, and then the suction force generated by the piston plate 27 transfers the concrete from the inside of the telescopic sampling tube 11 to the piston sampling pump 13 on the lower side of the piston plate 27. When the piston plate 27 descends, the sealing plate 30 at the concrete inlet 28 falls to close the concrete inlet 28, and the sealing plate 30 at the concrete outlet 29 swings to open the concrete outlet 29. Then, the concrete placed in the piston sampling pump 13 is transferred to the concrete outlet 29 under the pressure of the piston plate 27, and then transferred to the two-way swing mechanism along the output pipe 14, and then transported to the inside of the sample storage box 10 under the transmission of the rotating connecting piece;

[0033] It should be noted that springs are provided at the swinging connections between the sealing plate 30 and the concrete inlet 28 and the concrete outlet 29. The rebound force of the springs can be used to control the sealing plate 30 to be able to reset freely, and keep it swinging freely when it is subjected to suction and pressure.

[0034] In one embodiment of the present invention, the length of the telescopic sampling tube 11 is adjustable, and it can be set as a cylindrical telescopic connection structure, that is, the same as the tensile structure of the existing umbrella pole, and a corresponding arc-shaped positioning block and positioning hole are set at the connection, and the specific structure is not described in detail;

[0035] Alternatively, an adjustment component for adjusting the sampling length of the telescopic sampling tube 11 may be provided on one side of the telescopic sampling tube 11, and the adjustment component is manually rotated and controlled by the construction personnel. The telescopic sampling tube 11 itself is composed of a plurality of telescopic tubes in a plug-in manner. An upper connecting plate 18 and a lower connecting plate 15 are respectively installed on the circumferential outer walls of the upper and lower ends of the telescopic sampling tube 11. A through threaded hole is provided on the upper connecting plate 18, and an adjusting screw 16 parallel to the axis of the telescopic sampling tube 11 is threadedly connected in the threaded hole. A turning handle 17 is installed on the top of the adjusting screw 16, and the bottom end is rotatably connected to the lower connecting plate 15. The upper connecting plate 18 is driven to rotate and rise by rotating the turning handle 17, thereby stretching and contracting the telescopic sampling tube 11.

[0036] As a preferred embodiment of the present invention, refer to Figure 6 The bidirectional swing mechanism includes a concrete transfer groove ring 31 which is sleeved on the outside of the sample storage box 10 in an interval manner. A circle of concrete transfer grooves is provided on the top of the concrete transfer groove ring 31. The top of the output pipe 14 is connected with a concrete output end pipe 32. The concrete output end pipe 32 is slidably connected with the concrete transfer groove. The concrete inside the output pipe 14 is transported to the concrete transfer groove. Two groups of rotating connecting parts are provided and symmetrically installed on both sides of the inner wall of the concrete transfer groove ring 31. The rotating connecting part includes a transmission pipe 34 which is radially connected to the concrete transfer groove. The end of the transmission pipe 34 away from the concrete transfer groove is connected with a rotating connecting pipe 39. A rotating transmission hole 35 is provided on the box wall of the sample storage box 10 corresponding to the end of the rotating connecting pipe 39. The rotating connecting pipe 39 is rotatably connected in the rotating transmission hole 35. Under the connection of the transmission pipe 34 and the rotating connecting pipe 39, the concrete transfer groove is connected with the inside of the sample storage box 10, so that the concrete inside the concrete transfer groove is transferred to the sample storage box 10.

[0037] Specifically, in order to control the concrete in the concrete transfer trough to be concentrated and transferred toward the end of the transmission pipe 34, refer to Fig. 9, with the plane formed by the axes of the transmission pipes 34 on both sides as the boundary, inclined guide plates 33 are symmetrically arranged inside the concrete transfer trough, and the position of the guide plates 33 toward the end of the transmission pipe 34 is set to the lowest point, that is, under the action of gravity, the concrete is automatically transferred toward the input end of the transmission pipe 34, and then input into the sample storage box 10 through the transmission pipe 34 and the rotating connecting pipe 39;

[0038] The top end of the output pipe 14 is inserted into the concrete transfer groove, and the rotation of the concrete transfer groove ring 31 will not affect the normal material feeding at the top end of the output pipe 14;

[0039] Two support columns 47 are symmetrically installed at the bottom of the transmission tubes 34 on both sides, and the bottom of the support columns 47 is fixedly connected to the rotating connection assembly, so as to keep the transmission tube 34 and the concrete transfer groove ring 31 suspended in the air, and then the transmission tube 34 and the concrete transfer groove ring 31 are driven to rotate under the rotation of the rotating connection assembly, so as to drive the sample storage box 10 to rotate circumferentially, and shake the concrete sample placed in the sample storage box 10 to prevent it from solidifying;

[0040] The transmission pipe 34 is provided with a pump body for controlling the concrete in the concrete transfer tank to be transferred toward the inside thereof. The pump body has the same principle as a common water pump, and its pump suction force is much smaller than the thrust force inside the piston sampling pump 13 .

[0041] As a preferred embodiment of the present invention, the bidirectional swing mechanism further includes an outer toothed ring 40 arranged outside the sample storage box 10, the outer toothed ring 40 is vertically distributed with the concrete transfer groove ring 31 and is placed inside the concrete transfer groove ring 31, a connecting rod 41 is radially installed at an inner wall of the connecting rod 41, and the end of the connecting rod 41 facing the sample storage box 10 is fixedly connected to the outer wall of the sample storage box 10 through a connecting block 37. When the outer toothed ring 40 rotates, the sample storage box 10 is synchronously driven to rotate under the connection of the connecting rod 41 and the connecting block 37. At this time, under the rotation connection of the rotating connecting pipe 39 and the rotating transmission hole 35, the transmission pipe 34 is kept in a stationary state relative to the rotation of the sample storage box 10, thereby realizing the radial rotation of the sample storage box 10, shaking the concrete sample inside the sample storage box 10, and preventing it from solidifying; at this time, it cooperates with the circumferential rotation of the sample storage box 10 to realize the bidirectional rotation of the sample storage box 10, and ensure that the concrete input into the sample storage box 10 is fully shaken.

[0042] As a preferred embodiment of the present invention, the power unit also includes an active bevel gear 20 connected to the output end of the servo motor 19, and the upper and lower sides of the active bevel gear 20 are symmetrically and vertically meshed with auxiliary bevel gear 1 21 and auxiliary bevel gear 2 22, the top middle part of the auxiliary bevel gear 1 21 is connected to the rotating connection component, and the bottom middle part of the auxiliary bevel gear 22 is connected to the lifting connection component. The servo motor 19 is started to drive the active bevel gear 20 to rotate, and then the auxiliary bevel gear 1 21 and the auxiliary bevel gear 2 22 are synchronously driven to rotate;

[0043] For details, see Figure 8 The rotary connection assembly includes a connecting rod connected to the middle part of the top of the auxiliary bevel gear 21, a bevel gear 43 is installed on the top of the connecting rod, and a bevel gear 44 is vertically meshed on one side of the bevel gear 43. When the auxiliary bevel gear 21 rotates, the synchronous driving connecting rod drives the bevel gear 43 to rotate, and then drives the bevel gear 44 to rotate. At the same time, a spur gear positioning plate 45 with a U-shaped structure is installed in the middle part of the top of the bevel gear 43. A spur gear 46 is rotatably arranged inside the spur gear positioning plate 45. The top of the spur gear 46 is meshed with the bottom of the outer gear ring 40, and the outer gear ring 40 placed at the bottom of the spur gear positioning plate 45 is slidably clamped in the spur gear positioning plate 45. A movable through-type gear is connected to the middle part of one side of the spur gear 46. The rotating shaft of the spur gear positioning plate 45, the end of the rotating shaft is fixedly connected to the bevel gear 2 44. When the bevel gear 2 44 rotates, the spur gear 46 is driven to rotate under the connection of the rotating shaft, and then the outer gear ring 40 is driven to rotate. Then, under the connection of the connecting rod 41 and the connecting block 37, the sample storage box 10 is driven to rotate axially. At the same time, when the bevel gear 1 43 rotates, since the spur gear positioning plate 45 is fixed on the bevel gear 1 43, the bottoms of the support columns 47 on both sides are fixed on the side walls of the spur gear positioning plate 45. Therefore, under the connection of the support columns 47, the concrete transfer groove ring 31 and the sample storage box 10 are driven as a whole to rotate circumferentially, so as to realize the circumferential and axial bidirectional rotation of the sample storage box 10.

[0044] The lifting connection assembly includes a lead screw 24 connected to the middle of the bottom of the auxiliary bevel gear 22, a nut 25 is threadedly connected to the lead screw 24, and a guide device for limiting its rotation is provided on the nut 25. One side of the nut 25 is fixedly connected to the top of the L-shaped piston rod 26, that is, when the auxiliary bevel gear 22 rotates, the lead screw 24 is synchronously driven to rotate, and then the nut 25 is driven to move back and forth along the lead screw 24, and then, under the connection of the L-shaped piston rod 26, the piston plate 27 is driven to circulate and rise and fall inside the piston sampling pump 13, thereby generating suction and pressure to pump and sample the concrete;

[0045] Specifically, the bottom of the servo motor 19 is connected to a support rod 23, the bottom end of the support rod 23 is fixed to the piston sampling pump 13 through a connecting base block, one end of the lead screw 24 is rotatably connected to the connecting base block through a guide rod, and the top of the servo motor 19 is also connected to a support rod 23, and the end of the support rod 23 is connected to a collar 42 that is positioned and sleeved on the connecting rod. Under the action of the support rod 23, the collar 42, the connecting base block, etc., the servo motor 19, the lead screw 24 and other structures are kept stably distributed and operated;

[0046] It should be noted that the cyclic lifting stroke of the nut 25 on the lead screw 24 matches the up and down movement of the piston plate 27 inside the piston sampling pump 13 to ensure that the two operate in accurate coordination with each other.

[0047] The working principle of the present invention is: in the idle position of the device, all the driving parts mentioned above, which refer to power elements, electrical components and adapted power supplies, are connected through wires, and the electrical connections are completed in a sequential working order. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and does not explain the electrical control. During operation, according to the depth requirement of sampling at the concrete after highway construction, the length of the telescopic sampling tube 11 is pre-adjusted, and then the end cone tube 12 at the bottom of the telescopic sampling tube 11 is plugged into the position to be sampled, and then the servo motor 19 is started to drive the auxiliary bevel gear 1 21 and the auxiliary bevel gear 2 22 to rotate. When the auxiliary bevel gear 22 rotates, the piston sampling is controlled by the rotation and lifting of the lead screw 24 and the nut 25 at the bottom. The piston plate 27 inside the pump 13 moves up and down, and then transfers the concrete outside the end cone tube 12 to the piston sampling pump 13 along the telescopic sampling tube 11, and then transports it again through the output pipe 14, and inputs it into the concrete transfer groove ring 31 through the concrete output end pipe 32, and then flows through the transmission pipe 34 and inputs it into the sample storage box 10 for storage. At the same time, when the auxiliary helical gear 22 rotates, with the cooperation of the bevel gear 1 43, the bevel gear 2 44, the spur gear positioning plate 45, the spur gear 46, the outer gear ring 40, etc., the sample storage box 10 is driven to rotate synchronously in the circumferential and axial directions, and the concrete input into the sample storage box 10 is shaken in real time to prevent it from solidifying. When the subsequent detection is carried out, the sample in the sample storage box 10 is taken out again through the output port 36.

[0048] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A concrete sampling device for highway construction, characterized in that: A sample storage box (10) having a spherical structure is provided with a bidirectional swing mechanism on the outside of the sample storage box (10) for driving the sample storage box (10) to continuously rotate in two directions; A piston sampling pump (13) is arranged below the sample storage box (10); the bottom of the piston sampling pump (13) is connected to a telescopic sampling tube (11) with an adjustable length; one side of the piston sampling pump (13) is connected to an output tube (14); the top of the output tube (14) is rotationally connected to a bidirectional swing mechanism; a rotational connection component is arranged between the sample storage box (10) and the bidirectional swing mechanism; the concrete delivered to the bidirectional swing mechanism is transferred to the inside of the sample storage box (10) for storage under the transmission of the rotational connection component; A power unit is arranged between the bidirectional swing mechanism and the piston sampling pump (13), and the power unit includes a servo motor (19) and a rotating connection component and a lifting connection component synchronously driven by the servo motor (19). The top of the rotating connection component is connected to the bidirectional swing mechanism to drive the bidirectional swing mechanism to rotate, and the bottom of the lifting connection component is connected to the piston sampling pump (13) to control the operation of the piston sampling pump (13).

2. A concrete sampling device for highway construction according to claim 1, characterized in that: An output port (36) is provided on the outer wall of the sample storage box (10), and a cover plate is detachably mounted on the output port (36); The bottom end of the telescopic sampling tube (11) is connected to an end cone tube (12), and a plurality of feed holes are evenly arranged on the circumferential outer wall of the end cone tube (12); The output pipe (14) is provided with a control valve, the bottom end of the output pipe (14) is connected to the lower part of the side wall of the piston sampling pump (13), and the top end is provided with an L-shaped structure and is rotationally connected to the bidirectional swing mechanism.

3. A concrete sampling device for highway construction according to claim 2, characterized in that: A piston plate (27) is provided inside the piston sampling pump (13) in a lifting and sliding manner. The middle part of the top of the piston plate (27) is fixedly connected to the lifting connection assembly. A concrete inlet (28) is provided at the bottom of the piston sampling pump (13). The bottom of the concrete inlet (28) is connected to the top of the telescopic sampling tube (11). A concrete outlet (29) is provided on the outer wall of the piston sampling pump (13) corresponding to the bottom end of the output tube (14). A sealing plate (30) is elastically swingably installed on the upper side of the concrete inlet (28). A sealing plate (30) is also elastically swingably installed on the outer wall of the concrete outlet (29).

4. A concrete sampling device for highway construction according to claim 3, characterized in that: The bidirectional swing mechanism comprises a concrete transfer groove ring (31) which is sleeved on the outside of the sample storage box (10) in an interval manner, the top of the concrete transfer groove ring (31) is provided with a circle of concrete transfer grooves, the top of the output pipe (14) is connected with a concrete output end pipe (32), the concrete output end pipe (32) is slidably connected with the concrete transfer groove, and the concrete inside the output pipe (14) is transported to the concrete transfer groove, and two groups of rotating connecting parts are provided and symmetrically installed on both sides of the inner wall of the concrete transfer groove ring (31); The rotary connecting member comprises a transmission pipe (34) radially connected to the concrete transfer groove, the end of the transmission pipe (34) away from the concrete transfer groove is connected to a rotary connecting pipe (39), a rotary transmission hole (35) is opened on the box wall of the sample storage box (10) corresponding to the end of the rotary connecting pipe (39), and the rotary connecting pipe (39) is rotatably connected in the rotary transmission hole (35).

5. A concrete sampling device for highway construction according to claim 4, characterized in that: With the plane formed by the axes of the transmission pipes (34) on both sides as the boundary, inclined guide plates (33) are symmetrically arranged inside the concrete transfer trough, and the position of the guide plates (33) facing the ends of the transmission pipes (34) is set as the lowest point.

6. A concrete sampling device for highway construction according to claim 5, characterized in that: Two support columns (47) are symmetrically installed at the bottom of the transmission pipe (34) on both sides. The bottom of the support column (47) is fixedly connected to the rotating connection assembly. The transmission pipe (34) is provided with a pump body for controlling the transfer of concrete inside the concrete transfer trough toward the inside.

7. A concrete sampling device for highway construction according to claim 6, characterized in that: The bidirectional swing mechanism further comprises an outer toothed ring (40) arranged outside the sample storage box (10), the outer toothed ring (40) being vertically distributed with the concrete transfer groove ring (31) and being arranged inside the concrete transfer groove ring (31), a connecting rod (41) being radially mounted at one point on the inner wall of the connecting rod (41), and the end of the connecting rod (41) facing the sample storage box (10) being fixedly connected to the outer wall of the sample storage box (10) via a connecting block (37).

8. A concrete sampling device for highway construction according to claim 7, characterized in that: The power unit also includes an active bevel gear (20) connected to the output end of the servo motor (19), and the active bevel gear (20) is symmetrically and vertically meshed with an auxiliary bevel gear 1 (21) and an auxiliary bevel gear 2 (22) on the upper and lower sides, the top middle part of the auxiliary bevel gear 1 (21) is connected to the rotating connection component, and the bottom middle part of the auxiliary bevel gear 2 (22) is connected to the lifting connection component.

9. A concrete sampling device for highway construction according to claim 8, characterized in that: The rotary connection assembly comprises a connecting rod connected to the middle of the top of the auxiliary bevel gear 1 (21), a bevel gear 1 (43) is installed at the top of the connecting rod, and a bevel gear 2 (44) is vertically meshed on one side of the bevel gear 1 (43), a spur gear positioning plate (45) with a U-shaped structure is installed at the middle of the top of the bevel gear 1 (43), a spur gear (46) is rotatably arranged inside the spur gear positioning plate (45), the top of the spur gear (46) is meshed with the bottom of the outer gear ring (40), and the outer gear ring (40) placed at the bottom of the spur gear positioning plate (45) is slidably clamped in the spur gear positioning plate (45), and a rotating shaft that movably passes through the spur gear positioning plate (45) is connected to the middle of one side of the spur gear (46), and the end of the rotating shaft is fixedly connected to the bevel gear 2 (44).

10. A concrete sampling device for highway construction according to claim 9, characterized in that: The lifting connection assembly comprises a lead screw (24) connected to the middle part of the bottom of the auxiliary bevel gear (22), a nut (25) being threadedly connected to the lead screw (24), a guide device for limiting its rotation being provided on the nut (25), and one side of the nut (25) being fixedly connected to the top end of an L-shaped piston rod (26).

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