Road and bridge construction mixed material detecting and sampling equipment

Abstract

The invention relates to the technical field of road and bridge construction, in particular to road and bridge construction mixed material detecting and sampling equipment which comprises a lower seat plate, an outer sampling pipe, an upper seat plate and a digital display control panel, a guide rod structure is arranged between the lower seat plate and the upper seat plate, and a rod penetrating groove used for penetrating through the outer sampling pipe is formed in the lower seat plate in a penetrating mode. A driving wheel driving structure and a driven auxiliary wheel structure which are used for driving the external sampling tube to move are arranged on the lower seat plate, and a triangular support structure is arranged on the lower seat plate; through mutual cooperation of a lower seat plate, a driving wheel driving structure, a driven auxiliary wheel structure, an outer sampling pipe, a guide rod structure, an upper seat plate, a rotary driving assembly, an inner sampling spiral pipe structure and the like, automatic sampling of a mixed material at different depths can be realized, and continuous sampling can be carried out without pulling out; the spiral feeding mode is more labor-saving and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of road and bridge construction, and in particular to a mixed material detection and sampling device for road and bridge construction. Background Art

[0002] In the process of road and bridge construction, powder materials need to be mixed. Mixers are usually used to mix multiple powder materials together. If you want to sample and test the mixed powder materials, you usually only take samples of the powder materials on the surface, and you cannot test the quality of the powder materials in the middle and bottom of the powder tanker, making it difficult to determine whether the overall powder material quality meets the standards. Therefore, when sampling the powder materials, a material taking device is needed to sample the mixed powder materials at different depths.

[0003] A mixing material detection sampling device for road and bridge construction with publication number CN116878958A belongs to the field of road and bridge construction, and includes an outer sleeve with openings at both ends and an internal grabbing tube with openings at both ends. The internal grabbing tube is inserted into the outer sleeve and can move inside the internal grabbing tube. The grabbing end of the internal grabbing tube can extend from the insertion end of the outer sleeve, and the grabbing end of the internal grabbing tube is provided with multiple elastic clamping pieces.

[0004] However, the current detection sampling equipment is limited in insertion depth when sampling by handheld insertion. The deeper the insertion, the greater the friction and the more laborious it is. In addition, when sampling at different depths, the sample needs to be pulled out and reinsert each time, which is inefficient and troublesome. Summary of the invention

[0005] The purpose of the present invention is to provide a road and bridge construction mixing detection sampling equipment in order to solve the above-mentioned problems and overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a road and bridge construction mixing detection sampling device, comprising a lower seat plate, an external sampling tube, an upper seat plate and a digital display control panel, a guide rod structure is arranged between the lower seat plate and the upper seat plate, a rod-through groove for passing the external sampling tube is provided on the lower seat plate, an active wheel driving structure and a driven auxiliary wheel structure for driving and moving the external sampling tube are arranged on the lower seat plate, and a triangular support structure is arranged on the lower seat plate; The outer sampling tube is provided with an inner sampling spiral tube structure capable of rotating therein and spirally transmitting and exporting the sample; the outer sampling tube and the upper base plate are rotatably connected to each other; the upper base plate is provided with a rotating drive assembly for driving the outer sampling tube to rotate about its central axis; the inner sampling spiral tube structure comprises an inner sampling tube, a plurality of inner sampling holes are provided at the bottom end of the inner sampling tube, and a plurality of outer sampling holes are provided at the bottom end of the outer sampling tube; when the inner sampling tube is located in the outer sampling tube and rotates about its central axis, the inner sampling holes and the outer sampling holes are connected and cross-staggered with each other in sequence.

[0007] Preferably, the driving wheel driving structure includes a wheel seat with a U-shaped outer contour, the wheel seat is fixed on the inner wall of the through rod groove by bolts, a driving wheel is rotatably arranged in the wheel seat, a first motor for driving the driving wheel to rotate is arranged in the driving wheel, a first annular groove is opened on the outer side of the driving wheel along its circumferential direction, and the output end of the digital display control panel is electrically connected to the input end of the first motor.

[0008] Preferably, the driven auxiliary wheel structure includes an H-shaped wheel seat, and driven wheels are rotatably arranged in grooves on both sides of the H-shaped wheel seat, and a second annular groove is opened on the outer side of the driven wheel along its circumferential direction. An electric telescopic rod for driving the H-shaped wheel seat to move closer to or away from the wheel seat is fixedly arranged on the lower seat plate, and a driving wheel and two driven wheels are distributed in an isosceles triangle, and the output end of the digital display control panel is electrically connected to the input end of the electric telescopic rod.

[0009] Preferably, the H-shaped wheel seat located between the two driven wheels is provided with a connecting hole for cooperating and connecting with the head end of the electric telescopic rod push rod, a spring is fixedly connected between the head end of the electric telescopic rod push rod and the inner end surface of the connecting hole, and the cross-sectional shapes of the first annular groove and the second annular groove are both arc-shaped.

[0010] Preferably, the outer side of the outer sampling tube is rotatably connected to the upper base plate via a bearing, a pointed cone head is provided at the lower end of the outer sampling tube, a spiral drill bit is provided at the lower end of the outer sampling tube and the outer side of the pointed cone head, and the outer sampling hole is in the shape of a circular hole and is opened between the pitches of the spiral drill bit.

[0011] Preferably, the rotary drive assembly includes a gear ring fixedly mounted on the outside of the outer sampling tube, a gear meshingly connected to one side of the gear ring, a gear box is provided on the outer side cover of the gear and the gear ring, a second motor is fixedly mounted on the upper seat plate, an output shaft end of the second motor passes through the gear box and is connected to the gear, and the output end of the digital display control panel is electrically connected to the input end of the second motor.

[0012] Preferably, the guide rod structure includes two parallel distributed guide shafts, the lower seat plate is fixedly provided with a rod seat sleeve for cooperating and connecting with the guide shafts, the outer wall of the rod seat sleeve is threadedly connected with a first tightening bolt for achieving a tight abutment of the guide shaft in the rod seat sleeve, and the upper seat plate is provided with a guide sliding hole for sliding the guide shaft through.

[0013] Preferably, the inner sampling tube comprises a first section of inner sampling tube and a second section of inner sampling tube which are detachably threadedly connected to each other, the first section of inner sampling tube is connected to an arc-shaped row of sampling tubes, a central rotating shaft is rotatably arranged in the inner sampling tube, a spiral transmission rib is fixedly arranged on the outer side of the central rotating shaft, when the first section of inner sampling tube and the second section of inner sampling tube are connected to each other, the second section of inner sampling tube and the row of sampling tubes are connected to each other, a third motor for driving the central rotating shaft to rotate is arranged at the upper end of the first section of inner sampling tube, and the output end of the digital display control panel is electrically connected to the input end of the third motor.

[0014] Preferably, a sample collecting barrel for collecting samples exported from the sample tube is provided on the upper base plate, a clamp for fixing the sample collecting barrel is fixedly provided on the gear box, and the outer contour of the clamp is C-shaped, and cylinders distributed on both sides of the sampling tube in the second section are fixedly provided on the gear box, and more than four positioning holes for cooperating and connecting with the head end of the cylinder push rod, which are evenly distributed with the axis thereof as the center, are provided on the outer wall of the upper end of the sampling tube in the second section, and the positioning holes are evenly distributed with the axis thereof as the center, and the output end of the digital display control panel is electrically connected to the input end of the cylinder.

[0015] Preferably, an outer ring frame is provided on the outer side of the lower seat plate, and handles are provided on both sides of the outer ring frame. The triangular support structure includes an annular seat, and two or more connecting rods are fixedly connected to the upper side of the annular seat. A rod connecting hole for cooperating and connecting with the connecting rods is opened on the lower seat plate, and a second tightening bolt for realizing abutment and tightening of the connecting rod in the rod connecting hole is threadedly connected to the lower seat plate.

[0016] The beneficial effects are: 1. Through the cooperation between the lower base plate, the driving wheel driving structure, the driven auxiliary wheel structure, the external sampling tube, the guide rod structure, the upper base plate, the rotating driving assembly and the internal sampling spiral tube structure, the automatic sampling of the mixed material at different depths can be realized, and continuous sampling can be performed without pulling out. The spiral feeding method is more labor-saving and convenient; 2. The inner sampling tube is rotatable in the outer sampling tube, which can realize the staggering of the inner sampling hole and the outer sampling hole during the insertion process. Then, when sampling, the inner sampling hole and the outer sampling hole can be connected for sampling, thereby improving the inspection accuracy of sampling of mixed materials at different depths; 3. The push rod of the electric telescopic rod can adjust the distance between the driving wheel and the driven wheel, so as to facilitate the loading and unloading of the external sampling tube. In addition, the spring can also realize the elastic contact between the driven wheel and the external sampling tube, which increases the contact friction and realizes the elastic displacement of the driven wheel away from the driving wheel when the pointed cone head contacts with a rigid object. 4. The guide rod structure has two functions in practical applications. The first function is to support and install the upper seat plate. The second function is to guide the movement of the upper seat plate relative to the lower seat plate, thereby improving the feeding stability of the external sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of the present invention; Figure 2 The present invention Figure 1 Left view of; Figure 3 The present invention Figure 1 A first-direction stereogram; Figure 4 The present invention Figure 3 A partial enlarged view of point C; Figure 5 The present invention Figure 1 AA section view; Figure 6 The present invention Figure 5 A partial enlarged view of point D; Figure 7 The present invention Figure 5 A local enlarged view of point E; Figure 8 The present invention Figure 2 BB cross-section diagram; Fig. 9 The present invention Figure 8 A partial enlarged view of point F; Fig.10 The present invention Figure 8 A local enlarged view of point G; Fig.11 The present invention Figure 1 A second direction stereogram of .

[0019] The accompanying drawings are described as follows: 1. lower seat plate; 101. outer ring frame; 102. handle; 2. driving wheel driving structure; 201. wheel seat; 202. driving wheel; 203. first motor; 204. first annular groove; 3. driven auxiliary wheel structure; 301. H-shaped wheel seat; 302. driven wheel; 303. second annular groove; 304. electric telescopic rod; 305. connecting hole; 306. spring; 4. external sampling tube; 401. spiral drill bit; 402. external sampling hole; 403. pointed cone head; 5. guide rod structure; 501. guide shaft; 502. rod seat sleeve; 503. first fixing bolt; 6. upper Base plate; 7. Rotary drive assembly; 701. Gear box; 702. Gear; 703. Gear ring; 704. Second motor; 8. Internal sampling spiral tube structure; 801. First section internal sampling tube; 802. Third motor; 803. Second section internal sampling tube; 804. Sample row tube; 805. Central shaft; 806. Spiral transmission rib; 807. Internal sampling hole; 9. Sample collecting barrel; 10. Triangular support structure; 1001. Ring seat; 1002. Support foot; 1003. Connecting rod; 1004. Second fastening bolt; 11. Clamp; 12. Cylinder; 1201. Positioning hole; 13. Digital display control panel. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0021] See also Figure 1-Figure 11 As shown, the present invention provides a sampling device for mixing material detection in road and bridge construction, comprising a lower base plate 1, an external sampling tube 4, an upper base plate 6 and a digital display control panel 13, a guide rod structure 5 is arranged between the lower base plate 1 and the upper base plate 6, a rod-penetrating groove for passing the external sampling tube 4 is opened through the lower base plate 1, an active wheel driving structure 2 and a driven auxiliary wheel structure 3 for driving and moving the external sampling tube 4 are arranged on the lower base plate 1, and a triangular support structure 10 is arranged on the lower base plate 1; a structure capable of rotating and moving the sample screw inside the external sampling tube 4 is arranged inside the external sampling tube 4 The inner sampling spiral tube structure 8 derived by the rotary transmission, the outer sampling tube 4 and the upper base plate 6 are rotatably connected to each other, and a rotating drive component 7 for driving the outer sampling tube 4 to rotate about its central axis is provided on the upper base plate 6. The inner sampling spiral tube structure 8 includes an inner sampling tube, and a plurality of inner sampling holes 807 are opened at the bottom end of the inner sampling tube, and a plurality of outer sampling holes 402 are opened at the bottom end of the outer sampling tube 4. When the inner sampling tube is located in the outer sampling tube 4 and rotates about its central axis, the inner sampling holes 807 and the outer sampling holes 402 are connected and staggered with each other in sequence.

[0022] See the instruction manual Figure 1 , Figure 8 and Fig. 9 As shown, the driving wheel driving structure 2 includes a wheel seat 201 with a U-shaped outer contour, the wheel seat 201 is fixedly arranged on the inner side wall of the rod penetration groove by bolts, a driving wheel 202 is rotatably arranged in the U-shaped groove of the wheel seat 201, and a first motor 203 for driving the driving wheel 202 to rotate is fixedly arranged in the driving wheel 202. In actual application, one of the shaft ends of the driving wheel 202 is rotatably connected to the wheel seat 201, and the output shaft end of the first motor 203 passes through the other shaft end of the driving wheel 202 and is fixedly connected to the wheel seat 201, so that when the output shaft of the first motor 203 rotates, the driving wheel 202 can be driven to rotate under the support of the wheel seat 201, and a first annular groove 204 is opened on the outer side of the driving wheel 202 along its circumferential direction, and the output end of the digital display control panel 13 is electrically connected to the input end of the first motor 203.

[0023] The driven auxiliary wheel structure 3 includes an H-shaped wheel seat 301, and driven wheels 302 are rotatably arranged in grooves on both sides of the H-shaped wheel seat 301, and a second annular groove 303 is provided on the outer side of the driven wheel 302 along its circumferential direction. An electric telescopic rod 304 for driving the H-shaped wheel seat 301 to move closer to or away from the wheel seat 201 is fixedly arranged on the lower seat plate 1. One driving wheel 202 and two driven wheels 302 are distributed in an isosceles triangle, and the output end of the digital display control panel 13 is electrically connected to the input end of the electric telescopic rod 304. A connecting hole 305 for cooperating and connecting with the push rod head end of the electric telescopic rod 304 is provided on the H-shaped wheel seat 301 located between the two driven wheels 302, and a spring 306 is fixedly connected between the push rod head end of the electric telescopic rod 304 and the inner end surface of the connecting hole 305, and the cross-sectional shapes of the first annular groove 204 and the second annular groove 303 are both arc-shaped. Through the above-mentioned specific structural design, the extension and retraction of the push rod of the electric telescopic rod 304 can adjust the distance between the driving wheel 202 and the driven wheel 302, thereby facilitating the loading and unloading of the external sampling tube 4. In addition, the spring 306 can also realize the elastic abutment between the driven wheel 302 and the external sampling tube 4, which increases the contact friction force while also realizing that when the pointed cone head 403 contacts a rigid object, the driven wheel 302 is elastically offset in a direction away from the driving wheel 202.

[0024] The outer side of the outer sampling tube 4 is rotatably connected to the upper base plate 6 through a bearing, a pointed cone head 403 is provided at the lower end of the outer sampling tube 4, a spiral drill bit 401 is provided at the lower end of the outer sampling tube 4 and at the outer side of the pointed cone head 403, and the outer sampling hole 402 is a circular hole opened between the pitches of the spiral drill bit 401. The spiral drill bit 401 and the pointed cone head 403 can realize the spiral feeding of the outer sampling tube 4 in the mixed material.

[0025] See the instruction manual Figure 3 , Figure 6 and Fig.11 As shown, the rotary drive assembly 7 includes a gear ring 703 fixedly sleeved on the outside of the outer sampling tube 4, one side of the gear ring 703 is meshedly connected with a gear 702, the outer cover of the gear 702 and the gear ring 703 is provided with a gear box 701, and the upper seat plate 6 is fixedly provided with a second motor 704, the output shaft end of the second motor 704 passes through the gear box 701 and is connected to the gear 702, and the output end of the digital display control panel 13 is electrically connected to the input end of the second motor 704. In actual application, the output shaft of the second motor 704 can drive the gear 702 to rotate, and the gear 702 drives the outer sampling tube 4 to rotate through the meshing gear ring 703, so that the outer sampling tube 4 rotates under the support of the upper seat plate 6.

[0026] The guide rod structure 5 includes two parallel guide shafts 501, a rod seat sleeve 502 for matching and connecting with the guide shaft 501 is fixedly provided on the lower seat plate 1, a first fixing bolt 503 for realizing the guide shaft 501 being fixed and abutted in the rod seat sleeve 502 is threadedly connected on the outer wall of the rod seat sleeve 502, and a guide sliding hole for sliding through the guide shaft 501 is provided on the upper seat plate 6. The guide rod structure 5 has two functions in practical applications. The first function is to support and install the upper seat plate 6, and the second function is to guide the upper seat plate 6 to move relative to the lower seat plate 1, thereby improving the feeding stability of the external sampling tube 4.

[0027] The inner sampling tube includes a first section inner sampling tube 801 and a second section inner sampling tube 803 which are detachably threadedly connected to each other. The first section inner sampling tube 801 is connected to an arc-shaped row sampling tube 804. A central rotating shaft 805 is rotatably arranged inside the inner sampling tube. A spiral transmission rib 806 is fixedly arranged on the outer side of the central rotating shaft 805. When the first section inner sampling tube 801 and the second section inner sampling tube 803 are connected to each other, the second section inner sampling tube 803 and the row sampling tube 804 are connected to each other. A third motor 802 for driving the central rotating shaft 805 to rotate is arranged at the upper end of the first section inner sampling tube 801, and the output end of the digital display control panel 13 is electrically connected to the input end of the third motor 802.

[0028] The upper base plate 6 is provided with a sample collecting barrel 9 for collecting samples exported from the sample discharge tube 804, and a clamp 11 for clamping the sample collecting barrel 9 is fixedly provided on the gear box 701. The outer contour of the clamp 11 is C-shaped, and a cylinder 12 distributed on both sides of the sampling tube 803 in the second section is fixedly provided on the gear box 701. The outer wall of the upper end of the sampling tube 803 in the second section is provided with more than four positioning holes 1201 evenly distributed with the axis thereof as the center, which are used to cooperate with the push rod head end of the cylinder 12, and the output end of the digital display control panel 13 is electrically connected to the input end of the cylinder 12. When the spiral transmission rib 806 moves the sample upward in a spiral transmission, the sample is forced to move along the spiral groove due to the gravity of the sample itself and the friction against the inner wall of the inner sampling tube, as well as the direct push of the spiral transmission rib 806, thereby realizing vertical or inclined transportation. During this process, in order to prevent the inner sampling tube from shaking and rotating in the outer sampling tube 4, the cylinder 12 is not required to clamp and fix the inner sampling tube, thereby ensuring the stability of the inner sampling tube and that the sample arrangement tube 804 is always located directly above the sample collecting barrel 9.

[0029] An outer ring frame 101 is arranged on the outer side of the lower seat plate 1, and handles 102 are arranged on both sides of the outer ring frame 101. The triangular support structure 10 includes an annular seat 1001, and two or more connecting rods 1003 are fixedly connected to the upper side of the annular seat 1001. Rod connecting holes for cooperating and connecting with the connecting rods 1003 are opened on the lower seat plate 1, and second tightening bolts 1004 for realizing the abutment and tightening of the connecting rods 1003 in the rod connecting holes are threadedly connected on the lower seat plate 1.

[0030] Working principle and technical effects of the present invention: When in use, the triangular support structure 10 realizes the positioning support of the lower seat plate 1, and the push rod of the electric telescopic rod 304 retracts, thereby driving the H-shaped wheel seat 301 and the driven wheel 302 to move away from the driving wheel 202. When the distance between the driving wheel 202 and the driven wheel 302 reaches the maximum, the outer sampling tube 4 passes through the gap between the driving wheel 202 and the driven wheel 302, and then the push rod of the electric telescopic rod 304 extends, thereby driving the H-shaped wheel seat 301 and the driven wheel 302 to move closer to each other, so that the outer side walls of the outer sampling tube 4 are respectively embedded in the first annular groove 204 and the second annular groove 303 to abut against each other, and the guide shaft 501 passes through the guide sliding hole provided on the upper seat plate 6, so that when the driving wheel driving structure 2 drives the outer sampling tube 4 to move along its axial direction, it can be more stable and pointed accurately; When the spiral drill bit 401 at the end of the outer sampling tube 4 contacts the mixed material, in order to sample the deeper mixed material, the active wheel driving structure 2 drives the outer sampling tube 4 to continue to move, while the rotary driving assembly 7 can also drive the outer sampling tube 4 to rotate around its central axis, and cooperate with the spiral drill bit 401 and the pointed cone head 403 to realize the screwing in the mixed material. When the appropriate depth is reached, the inner sampling tube rotates in the outer sampling tube 4, so that the sample arrangement tube 804 is located directly above the sample collection barrel 9, and then the push rod of the cylinder 12 is extended and The positioning holes 1201 cooperate with each other to achieve the locking of the inner sampling tube in the outer sampling tube 4. At this time, the outer sampling hole 402 and the inner sampling hole 807 are in a corresponding and connected state, and the mixed material enters the outer sampling tube 4 from the outer sampling hole 402 and the inner sampling hole 807 in turn. The rotation of the output shaft of the third motor 802 can drive the central rotating shaft 805 and the spiral transmission rib 806 to rotate, thereby spirally transmitting the sample at the bottom end of the inner sampling tube upward, and the sample is led out by the sample discharge tube 804 and falls into the sample collecting barrel 9 for collection.

[0031] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A mixed material detection sampling device for road and bridge construction, characterized by: The device comprises a lower seat plate (1), an external sampling tube (4), an upper seat plate (6) and a digital display control panel (13); a guide rod structure (5) is arranged between the lower seat plate (1) and the upper seat plate (6); a rod-penetrating groove for passing the external sampling tube (4) is provided on the lower seat plate (1); a driving wheel driving structure (2) and a driven auxiliary wheel structure (3) for driving the external sampling tube (4) to move are arranged on the lower seat plate (1); and a triangular support structure (10) is arranged on the lower seat plate (1); The outer sampling tube (4) is provided with an inner sampling spiral tube structure (8) capable of rotating therein and transmitting and extracting the sample in a spiral manner. The outer sampling tube (4) is rotatably connected to the upper base plate (6). The upper base plate (6) is provided with a rotation drive assembly (7) for driving the outer sampling tube (4) to rotate about its central axis. The inner sampling spiral tube structure (8) comprises an inner sampling tube, a plurality of inner sampling holes (807) are provided at the bottom end of the inner sampling tube, and a plurality of outer sampling holes (402) are provided at the bottom end of the outer sampling tube (4). When the inner sampling tube is located in the outer sampling tube (4) and rotates about its central axis, the inner sampling holes (807) and the outer sampling holes (402) are sequentially connected and cross-staggered with each other.

2. According to claim 1, a road and bridge construction mixed material detection sampling equipment is characterized by: The driving wheel driving structure (2) comprises a wheel seat (201) having a U-shaped outer profile, the wheel seat (201) being fixedly arranged on the inner side wall of the rod penetration groove by means of bolts, a driving wheel (202) being rotatably arranged in the wheel seat (201), a first motor (203) for driving the driving wheel (202) being arranged in the driving wheel (202) for driving the driving wheel to rotate, a first annular groove (204) being provided on the outer side of the driving wheel (202) along its circumferential direction, and an output end of the digital display control panel (13) being electrically connected to an input end of the first motor (203).

3. According to claim 2, a road and bridge construction mixed material detection sampling equipment is characterized by: The driven auxiliary wheel structure (3) comprises an H-shaped wheel seat (301), and driven wheels (302) are rotatably arranged in grooves on both sides of the H-shaped wheel seat (301), and a second annular groove (303) is provided on the outer side of the driven wheel (302) along its circumferential direction. An electric telescopic rod (304) for driving the H-shaped wheel seat (301) to move closer to or away from the wheel seat (201) is fixedly arranged on the lower seat plate (1), and a driving wheel (202) and two driven wheels (302) are arranged in an isosceles triangle. The output end of the digital display control panel (13) is electrically connected to the input end of the electric telescopic rod (304).

4. According to claim 3, a road and bridge construction mixed material detection sampling equipment is characterized by: The H-shaped wheel seat (301) located between the two driven wheels (302) is provided with a connecting hole (305) for cooperating with the push rod head end of the electric telescopic rod (304) to connect with each other, a spring (306) is fixedly connected between the push rod head end of the electric telescopic rod (304) and the inner end surface of the connecting hole (305), and the cross-sectional shapes of the first annular groove (204) and the second annular groove (303) are both arc-shaped.

5. According to claim 1, a road and bridge construction mixed material detection sampling equipment is characterized by: The outer side of the outer sampling tube (4) is rotatably connected to the upper base plate (6) via a bearing, a pointed cone head (403) is provided at the lower end of the outer sampling tube (4), a spiral drill bit (401) is provided at the lower end of the outer sampling tube (4) and at the outer side of the pointed cone head (403), and the outer sampling hole (402) is in the shape of a circular hole and is opened between the pitches of the spiral drill bit (401).

6. The mixed material detection sampling equipment for road and bridge construction according to claim 1 is characterized by: The rotary drive assembly (7) comprises a gear ring (703) fixedly sleeved on the outside of the outer sampling tube (4); a gear (702) is meshedly connected to one side of the gear ring (703); a gear box (701) is provided on the outer side cover of the gear (702) and the gear ring (703); a second motor (704) is fixedly provided on the upper base plate (6); an output shaft end of the second motor (704) passes through the gear box (701) and is connected to the gear (702); and an output end of the digital display control panel (13) is electrically connected to an input end of the second motor (704).

7. The mixed material detection sampling equipment for road and bridge construction according to claim 1 is characterized by: The guide rod structure (5) comprises two parallel distributed guide shafts (501); a rod seat sleeve (502) for cooperating with the guide shaft (501) is fixedly provided on the lower seat plate (1); a first fixing bolt (503) for achieving a tight abutment of the guide shaft (501) in the rod seat sleeve (502) is threadedly connected on the outer wall of the rod seat sleeve (502); and a guide sliding hole for slidingly passing the guide shaft (501) is provided on the upper seat plate (6).

8. The mixed material detection sampling equipment for road and bridge construction according to claim 6 is characterized by: The inner sampling tube comprises a first section inner sampling tube (801) and a second section inner sampling tube (803) which are detachably threadedly connected to each other; the first section inner sampling tube (801) is connected to an arc-shaped sample arrangement tube (804); a central rotating shaft (805) is rotatably arranged in the inner sampling tube; a spiral transmission rib (806) is fixedly arranged on the outer side of the central rotating shaft (805); when the first section inner sampling tube (801) and the second section inner sampling tube (803) are connected to each other, the second section inner sampling tube (803) and the sample arrangement tube (804) are communicated with each other; a third motor (802) for driving the central rotating shaft (805) to rotate is arranged at the upper end of the first section inner sampling tube (801); and an output end of the digital display control panel (13) is electrically connected to an input end of the third motor (802).

9. The mixed material detection sampling equipment for road and bridge construction according to claim 8, characterized in that: The upper base plate (6) is provided with a sample collecting barrel (9) for collecting samples from the sample collecting tube (804), the gear box (701) is fixedly provided with a clamp (11) for clamping the sample collecting barrel (9), and the outer contour of the clamp (11) is C-shaped, and the gear box (701) is fixedly provided with cylinders (12) distributed on both sides of the second section inner sampling tube (803), and the outer wall of the upper end of the second section inner sampling tube (803) is provided with more than four positioning holes (1201) evenly distributed with the central axis as the center, and used for matching and connecting with the push rod head end of the cylinder (12), and the output end of the digital display control panel (13) is electrically connected to the input end of the cylinder (12).

10. The mixed material detection sampling equipment for road and bridge construction according to claim 1, characterized in that: An outer ring frame (101) is arranged on the outer side of the lower seat plate (1), and handles (102) are arranged on both sides of the outer ring frame (101). The triangular support structure (10) comprises an annular seat (1001), and two or more connecting rods (1003) are fixedly connected to the upper side of the annular seat (1001). The lower seat plate (1) is provided with a rod connection hole for matching and connecting with the connecting rod (1003). The lower seat plate (1) is threadedly connected with a second fixing bolt (1004) for realizing the abutment and fixing of the connecting rod (1003) in the rod connection hole.

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