A sampling device for subgrade pavement detection

Abstract

The utility model discloses a kind of sampling devices for roadbed pavement detection, the measuring mechanism includes arc clamping plate, two are arranged in the arc clamping plate, the two side edges of the arc clamping plate in length direction are fixedly connected with scale, the thickness of the scale is less than the overall thickness of arc clamping plate, the outer surface middle part upper end of two arc clamping plates is fixedly installed with bushing, the bushing is consistent with arc clamping plate in length direction, the bottom end both sides of the bushing are equipped with positioning groove, the middle surface upper end and lower end of the bushing are all connected with bolt three, shovel plate is set at the end of extension rod after disassembly, so as to shovel the end surface adherend of sample by the sharp side of shovel plate bottom, arc clamping plate is pressed against sample outside pavement, the specific thickness of sample can be measured by scale, the above structure improves the practicality of sampling tongs, and the number of tools needed to carry in sampling process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of roadbed sampling technology, specifically to a sampling device for roadbed and pavement testing. Background Technology

[0002] Roadbed and pavement testing and sampling involves collecting samples of soil, asphalt mixtures, and other materials during the construction or maintenance phase of road engineering through methods such as core drilling, pit excavation, or non-destructive testing. These samples are used to analyze key indicators such as compaction, strength, and thickness to assess construction quality, verify design parameters, and guide subsequent maintenance, ensuring the safety and durability of the road structure.

[0003] In existing technologies, after drilling cores into the roadbed and pavement, it is usually necessary to use pliers to probe into the drilling point and remove the drilled sample. The pliers commonly used for sampling in existing technologies are usually simple in structure and have a single function, which means that multiple devices are usually required when sampling the roadbed and pavement, which is quite troublesome. Therefore, a sampling device for roadbed and pavement testing is proposed to solve the above problems. Utility Model Content

[0004] The objective of this utility model can be achieved through the following technical solutions: A sampling device for roadbed and pavement testing includes a clamping mechanism, wherein a measuring mechanism is symmetrically arranged at the lower end of the clamping mechanism; The measuring mechanism includes two arc-shaped clamps. A scale is fixedly connected to each of the two sides of the arc-shaped clamps along its length. The thickness of the scale is less than the overall thickness of the arc-shaped clamp. A sleeve is fixedly installed at the upper middle part of the outer surface of each of the two arc-shaped clamps. The sleeve is aligned with the arc-shaped clamp in the length direction. Positioning grooves are provided on both sides of the bottom end of the sleeve. Bolts are connected through the upper and lower ends of the middle surface of the sleeve.

[0005] As a further embodiment of this utility model: the clamping mechanism includes connecting rods, two of which are symmetrically arranged, and a bolt is rotatably connected through the middle of the two connecting rods. The end of the bolt passes through the two connecting rods and is threaded with a nut.

[0006] As a further embodiment of this utility model: handles are fixedly installed on the outer sides of the upper ends of the two connecting rods, the lower ends of the two connecting rods extend in a vertical direction, and through holes are opened on the lower end surface of each connecting rod.

[0007] As a further embodiment of this utility model: the clamping mechanism further includes an extension rod, two extension rods are provided in total, and a slot is provided on the top surface of each extension rod. A bolt is inserted and threadedly connected to the lower end of the extension rod near the slot, and the end of the bolt is horizontally inserted into the slot.

[0008] As a further embodiment of this utility model: a protective sleeve is bonded and fixed to the upper surface of the outer wall of the extension rod away from the second bolt, and a shovel plate is fixedly installed at the bottom end of the extension rod. The shovel plate and the extension rod are perpendicular to each other in the length direction, and a through hole is opened on the surface of the extension rod between the protective sleeve and the shovel plate.

[0009] As a further embodiment of this utility model: the slot is inserted into the lower end of the connecting rod, and the end of the second bolt is connected through to the lower end of each connecting rod.

[0010] As a further embodiment of this utility model: the lower end of the outer wall of the extension rod is sleeved and connected to the inner wall of the insert, and the sheath is connected through the inner wall of the insert; the top surface of the shovel plate abuts against the inner side of the positioning groove; and the middle part of the surface of the extension rod is inserted into and threadedly fastened to each of the three bolts.

[0011] The beneficial effects of this utility model are: (1) The present invention uses two scissor-type connecting rods to form a clamp structure. The lower end of each connecting rod is fixed with an arc-shaped clamp plate. The arc-shaped clamp plate can be inserted into the gap of the core drilling point. By closing the upper end of the connecting rod, the outer wall of the sample is closed and clamped by the arc-shaped clamp plates on both sides. Compared with the common straight clamp plate, the arc-shaped clamp plate has a larger contact area with the surface of the cylindrical sample, so the sample is not easy to slide down when it is clamped, reducing the difficulty of clamping.

[0012] (2) After the sample is clamped, it is usually necessary to clean the attachments on the end face of the cylindrical sample and then measure the sample thickness. At this time, the connecting rod can be separated from the lower extension rod, and the extension rod can be separated from the lower arc clamp. A shovel is set at the end of the disassembled extension rod, so that the attachments on the end face of the sample can be removed by using the sharp side of the bottom of the shovel. A scale is fixed on the length side of the arc clamp. The sample is placed upright on the road surface, and the arc clamp is pressed against the road surface outside the sample. The specific thickness of the sample can be measured by using the scale. The above structure improves the practicality of the sampling pliers and reduces the number of tools that need to be carried during the sampling process. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the upper structure of the clamping mechanism in this utility model; Figure 3 This is a schematic diagram of the overall structure of the arc-shaped clamping plate in this utility model; Figure 4 This is a schematic diagram of the overall structure of the extension rod in this utility model.

[0015] In the diagram: 1. Clamping mechanism; 101. Connecting rod; 102. Handle; 103. Bolt 1; 104. Nut; 105. Extension rod; 106. Bolt 2; 107. Slot; 108. Protective sleeve; 109. Shovel plate; 2. Measuring mechanism; 201. Arc-shaped clamp; 202. Scale; 203. Insert sleeve; 204. Positioning groove; 205. Bolt 3. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1-4 As shown, a sampling device for roadbed and pavement testing includes a clamping mechanism 1, with a measuring mechanism 2 symmetrically arranged at the lower end of the clamping mechanism 1. The measuring mechanism 2 includes two arc-shaped clamping plates 201. A scale 202 is fixedly connected to each of the two sides of the arc-shaped clamping plates 201 along its length. The thickness of the scale 202 is less than the overall thickness of the arc-shaped clamping plates 201. A sleeve 203 is fixedly installed at the upper middle part of the outer surface of each of the two arc-shaped clamping plates 201. The sleeve 203 is aligned with the arc-shaped clamping plates 201 along its length. Positioning grooves 204 are provided on both sides of the bottom end of the sleeve 203. Bolts 205 are threaded through the upper and lower ends of the middle surface of the sleeve 203. Figure 3 As shown, the thickness of the scale 202 is less than that of the arc-shaped clamp 201. Therefore, when the arc-shaped clamp 201 is inserted into the gap, the outer surface of the scale 202 is not directly subjected to friction from the inner wall of the drill hole, thus avoiding damage to the scale.

[0018] The clamping mechanism 1 includes two connecting rods 101 symmetrically arranged. A bolt 103 is rotatably connected through the middle of both connecting rods 101. The end of the bolt 103 passes through both connecting rods 101 and is threaded with a nut 104. Figure 2 As shown, the two connecting rods 101 can be separated after the nut 104 is removed.

[0019] Handles 102 are fixedly mounted on the outer upper ends of both connecting rods 101. The lower ends of both connecting rods 101 extend vertically, and through holes are formed on the lower surface of each connecting rod 101. Figure 2 As shown, the through hole is used to connect bolt 2106.

[0020] The clamping mechanism 1 also includes two extension rods 105. Each extension rod 105 has a slot 107 on its top surface. A bolt 106 is threadedly inserted into and connected to the lower end of the extension rod 105 near the slot 107. The end of the bolt 106 is horizontally inserted into the slot 107. A sheath 108 is bonded to the upper outer wall of the extension rod 105 away from the bolt 106. A scraper plate 109 is fixedly installed at the bottom end of the extension rod 105. The scraper plate 109 is perpendicular to the extension rod 105 in the length direction. A through hole is formed on the surface of the extension rod 105 between the sheath 108 and the scraper plate 109. Figure 4 As shown, the through hole is used to connect bolt 3205; the thickness of the scraper 109 gradually decreases from top to bottom, thus forming a sharp side, which facilitates scraping and cleaning of the sample end face.

[0021] The slot 107 is inserted into the lower end of the connecting rod 101, and the end of the bolt 106 is connected through to the lower end of each connecting rod 101. The lower end of the outer wall of the extension rod 105 is sleeved and connected to the inner wall of the sleeve 203, and the sheath 108 is connected through to the inner wall of the sleeve 203. The top surface of the shovel plate 109 abuts against the inner side of the positioning groove 204. The middle part of the surface of the extension rod 105 is inserted into and threadedly fastened to each bolt 205. Figure 1 , Figure 4 As shown, the sheath 108 does not affect the extension rod 105 from dislodging from the insert 203.

[0022] The working principle of this utility model: During the roadbed and pavement sampling process, the drilling machine drives the drill bit to rotate, and the drill bit drills the core at the sampling point. Then, the operator holds the upper end of the connecting rod 101 and inserts the arc-shaped clamp 201 into the circular gap of the core. By closing the gap between the two handles 102, the two arc-shaped clamps 201 close and clamp the cylindrical sample to remove it from the drilling pit. Next, loosen the disassembly nuts 104, 103, 106, and 205. The two connecting rods 101 can then be separated, and the extension rods 105 and the arc-shaped clamps 201 can be separated from the extension rods 105. Then, the operator holds the protective sleeve 108 and presses the scraper 109 against the end face of the cylindrical sample to remove the attached material from the end face, thus ensuring that the end face of the sample is flat and clean. Then, place the end face of the sample on the road surface and put the disassembled arc-shaped clamps 201 on the outside of the sample. The bottom surface of the arc-shaped clamps 201 is also supported on the road surface. At this time, the specific thickness of the sample can be measured by comparing the reading of the scale 202 aligned with the top of the sample.

[0023] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A sampling device for roadbed and pavement testing, comprising a clamping mechanism (1), wherein a measuring mechanism (2) is symmetrically arranged at the lower end of the clamping mechanism (1). Its features are, The measuring mechanism (2) includes an arc-shaped clamp (201), two arc-shaped clamps (201) are provided, and a scale (202) is fixedly connected to both sides of the arc-shaped clamp (201) in the length direction. The thickness of the scale (202) is less than the overall thickness of the arc-shaped clamp (201). A sleeve (203) is fixedly installed at the upper middle part of the outer surface of the two arc-shaped clamps (201). The sleeve (203) is consistent with the arc-shaped clamp (201) in the length direction. A positioning groove (204) is opened on both sides of the bottom end of the sleeve (203). Bolts (205) are connected through the upper and lower ends of the middle surface of the sleeve (203).

2. The sampling device for roadbed and pavement testing according to claim 1, characterized in that, The clamping mechanism (1) includes a connecting rod (101), two connecting rods (101) are symmetrically arranged, and a bolt (103) is rotatably connected through the middle of the two connecting rods (101). The end of the bolt (103) passes through the two connecting rods (101) and is threaded with a nut (104).

3. A sampling device for roadbed and pavement testing according to claim 2, characterized in that, A handle (102) is fixedly installed on the outer side of the upper end of each of the two connecting rods (101), the lower ends of the two connecting rods (101) extend in the vertical direction, and a through hole is opened on the lower end surface of each connecting rod (101).

4. The sampling device for subgrade pavement detection according to claim 3, characterized in that, The clamping mechanism (1) also includes an extension rod (105). Two extension rods (105) are provided. Each extension rod (105) has a slot (107) on its top surface. A bolt (106) is inserted and threaded into the lower end of the extension rod (105) near the slot (107). The end of the bolt (106) is horizontally inserted into the slot (107).

5. A sampling device for roadbed and pavement testing according to claim 4, characterized in that, A sheath (108) is bonded and fixed to the upper surface of the outer wall of the extension rod (105) away from the bolt (106). A shovel plate (109) is fixedly installed at the bottom end of the extension rod (105). The shovel plate (109) and the extension rod (105) are perpendicular to each other in the length direction. A through hole is opened on the surface of the extension rod (105) between the sheath (108) and the shovel plate (109).

6. A sampling device for roadbed and pavement testing according to claim 5, characterized in that, The slot (107) is inserted into the lower end of the connecting rod (101), and the end of the bolt (106) is connected through to the lower end of each connecting rod (101).

7. A sampling device for roadbed and pavement testing according to claim 6, characterized in that, The lower end of the outer wall of the extension rod (105) is sleeved and connected to the inner wall of the sleeve (203), and the sheath (108) is connected through the inner wall of the sleeve (203). The top surface of the shovel plate (109) abuts against the inner side of the positioning groove (204). The middle part of the surface of the extension rod (105) is inserted into and threadedly fastened to each of the three bolts (205).

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