An asphalt detection device for road construction

Abstract

The utility model relates to bituminous detection technical field, concretely relates to a bituminous detection device for road construction, including drilling machine main part, the working end fixed mounting of drilling machine main part has the sampling drill cylinder, the upside of sampling drill cylinder is equipped with two through grooves, and the through groove is through with the bituminous sample placing space inside sampling drill cylinder, the top of through groove is provided with the top rod. Through the positioning mechanism control top rod down shift into the through groove after limiting, the top rod because prelimiting in the through groove during the up -moving process of sampling drill cylinder completion drilling, can directly form rigid abutment with the bottom of bituminous sample, make sample automatic separation drilling cavity, shorten the sampling material time of single sampling, effectively avoid manual sampling to slow down the construction progress, fundamentally avoid the interference of bituminous debris to sampling part, solve the bituminous detection device sampling when manual material need to consume long time, slow down the construction progress, and the technical problem that sampling stability is poorer.

Description

Technical Field

[0001] This utility model relates to the field of asphalt testing technology, specifically to an asphalt testing device for road construction. Background Technology

[0002] Asphalt testing equipment for road construction is a device used to collect asphalt mixture samples during or after construction for quality testing. The asphalt testing equipment for road construction can obtain uniform and representative samples from the asphalt mixture under construction. These samples will be used for subsequent asphalt performance testing. By scientifically sampling and testing, the key indicators of asphalt mixture can be mastered, ensuring that the asphalt materials used meet quality standards and avoiding road damage and safety hazards caused by material problems. Chinese Patent Publication No. CN216116844U discloses a sampling device for asphalt road construction testing, including a top plate. Vertical rods are movably connected to the left and right sides of the top plate near the front and rear sides. Sleeves are fixedly connected to the bottom ends of several vertical rods. Threaded sleeves are provided in the inner cavities of several sleeves. The bottom ends of several threaded sleeves penetrate the inner cavities of adjacent sleeves. Through the cooperation of components such as sleeves, threaded sleeves, universal wheels, threaded rods, fixed plates, first bevel gears, second bevel gears, rotating rods, and hand cranks, the device can perform sampling and testing operations on uneven asphalt pavements, exhibiting high practicality. Through the cooperation of components such as sampling cylinders, movable rods, movable blocks, movable plates, sliders, return springs, sliding rods, and snap-fit ​​springs, the sample can be easily removed from the drill bit after sampling, improving work efficiency. The aforementioned patent mentions that when manually taking samples with the sampling device, the operator needs to first position the handle, then pull both handles simultaneously. After releasing the jamming, they need to wait for the reset spring to extend naturally and push the movable plate. However, in road construction inspection, multiple sampling points need to be taken on the road section to be inspected. Manually taking samples each time takes a long time, slowing down the construction progress. Furthermore, when the asphalt road sample enters the inner cavity of the sampling cylinder, the debris generated by drilling the asphalt sample can easily enter the groove inside the sampling cylinder, interfering with the slider driving the movable plate to push out the sample, affecting the stability of the sampling device. Therefore, we propose an asphalt testing device for road construction. Utility Model Content

[0003] To address the aforementioned issues, an asphalt testing device for road construction is provided. A positioning mechanism controls the downward movement of the top rod into the through-groove and then limits its position. During the upward movement of the sampling drill after drilling, the top rod, pre-limited within the through-groove, directly forms a rigid contact with the bottom of the asphalt sample, causing the sample to automatically detach from the drilling chamber. This shortens the sampling time per session, effectively avoiding the slowdown caused by manual sampling. Simultaneously, it fundamentally avoids interference from asphalt debris on the sampling components, solving the technical problems of long sampling times, slowed construction progress, and poor sampling stability associated with manual sampling in asphalt testing devices.

[0004] To address the existing technical problems, this utility model provides an asphalt testing device for road construction, comprising a drilling rig body, a sampling drill cylinder fixedly installed at the working end of the drilling rig body, two through slots opened on the upper side of the sampling drill cylinder, the through slots communicating with the asphalt sample placement space inside the sampling drill cylinder; a top rod is provided directly above the through slot, the number of top rods corresponding one-to-one with the number of through slots; a support frame is provided on the outer side of the top rod, the support frame being fixedly connected to the drilling rig body; a positioning mechanism for controlling the displacement distance of the top rod is provided between the support frame and the top rod.

[0005] Preferably, the positioning mechanism includes a first sliding groove, a guide rod, and a guide channel; the first sliding groove is formed on the side of the support frame near the top rod, and the first sliding groove is slidably engaged with the top rod; the guide rod is disposed between the drilling rig body and the top rod; the guide channel is formed on the side of the support frame near the guide rod, and the guide channel is slidably engaged with the guide rod.

[0006] Preferably, the push rod and the first slide groove form a sliding guide pair, and the guide rod and the guide groove form a sliding guide pair.

[0007] Preferably, the positioning mechanism further includes a connecting plate, an elastic reset member, and a limiting mechanism; the two ends of the connecting plate are fixedly connected to the top rod and the guide rod, respectively; the elastic reset member is sleeved with the lower end of the guide rod, and the two ends of the elastic reset member are fixedly connected to the support frame and the guide rod, respectively; the limiting mechanism is disposed between the support frame and the guide rod, and the limiting mechanism is used to prevent the guide rod from sliding along the guide groove.

[0008] Preferably, the limiting mechanism includes a first toothed plate, a second toothed plate, and a displacement assembly; the first toothed plate is fixedly mounted on the guide rod; the second toothed plate meshes with the first toothed plate; the displacement assembly is disposed between the support frame and the second toothed plate, and the displacement assembly is used to drive the second toothed plate to move linearly.

[0009] Preferably, the displacement assembly includes a second slide groove, a bolt, and a threaded tube; the second slide groove is formed on the side of the support frame near the second toothed plate, and the second slide groove is slidably engaged with the second toothed plate; one end of the bolt is rotatably connected to the side of the second toothed plate away from the first toothed plate; the threaded tube is threadedly connected to the bolt, and the threaded tube is fixedly connected to the support frame.

[0010] Preferably, the second toothed plate and the second slide groove form a sliding guide pair, and the cross-sectional shape of the second slide groove is rectangular.

[0011] The advantages of this utility model compared to the prior art are: 1. By controlling the downward movement of the top rod through the slot and limiting its position through the positioning mechanism, and during the upward movement of the sampling drill after drilling, the top rod, being pre-limited within the slot, can directly form a rigid contact with the bottom of the asphalt sample, causing the sample to automatically detach from the drilling chamber. This shortens the sampling time for a single sampling, effectively avoiding the slowdown of construction progress caused by manual sampling. At the same time, it fundamentally avoids the interference of asphalt debris on the sampling components, solving the technical problems of long time required for manual sampling of asphalt testing devices, which slows down the construction progress and results in poor sampling stability.

[0012] 2. By forming a sliding guide pair between the top rod and the first sliding groove, and a sliding guide pair between the guide rod and the guide groove, a double sliding guide pair constraint is formed, which solves the technical problem that the top rod cannot be stably inserted into the through groove when adjusting the height of the asphalt testing device, and the subsequent contact with the sample is unreliable, thus affecting the sampling efficiency and sample detachment effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the drilling rig body, sampling drill barrel, and their connecting structure of an asphalt testing device for road construction.

[0014] Figure 2 This is a three-dimensional schematic diagram of the sampling drill barrel, top rod, and connecting structure of an asphalt testing device for road construction.

[0015] Figure 3 This is a three-dimensional schematic diagram of the top rod, connecting plate, and connection structure of an asphalt testing device for road construction.

[0016] Figure 4 A road construction asphalt testing device Figure 1 Enlarged diagram of point A in the middle.

[0017] Figure 5 A road construction asphalt testing device Figure 3 Enlarged diagram of point B in the middle.

[0018] The following are the labels in the diagram: 1. Drill rig body; 11. Sampling drill barrel; 2. Through slot; 21. Top rod; 22. Support frame; 23. First slide groove; 24. Guide rod; 25. Guide groove; 26. Connecting plate; 27. Elastic reset component; 28. First toothed plate; 29. ​​Second toothed plate; 210. Second slide groove; 211. Bolt; 212. Threaded tube. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0020] See Figures 1-3 As shown, an asphalt testing device for road construction includes a drilling rig body 1. A sampling drill cylinder 11 is fixedly installed at the working end of the drilling rig body 1. Two through slots 2 are opened on the upper side of the sampling drill cylinder 11, and the through slots 2 communicate with the asphalt sample placement space inside the sampling drill cylinder 11. A top rod 21 is arranged directly above the through slot 2, and the number of top rods 21 corresponds one-to-one with the number of through slots 2. A support frame 22 is arranged on the outer side of the top rod 21, and the support frame 22 is fixedly connected to the drilling rig body 1. A positioning mechanism for controlling the displacement distance of the top rod 21 is arranged between the support frame 22 and the top rod 21.

[0021] Specifically, when the asphalt testing device is put into use, the main body of the drilling rig 1 is first placed at the designated position on the asphalt pavement, so that the sampling drill 11 is precisely aligned with the sampling point; then, the support frame 22 is fixedly assembled with the main body of the drilling rig 1 using screws and other fasteners to ensure the overall structure of the device is stable.

[0022] After the support frame 22 is assembled, press the top rod 21 to insert it into the through groove 2. According to the expected thickness parameters of the asphalt sample to be collected, control the downward movement distance of the top rod 21. When the top rod 21 moves down to the preset height, activate the positioning mechanism to limit and lock the top rod 21 to ensure that the height of the top rod 21 after adjustment remains constant and to avoid positional deviation during subsequent sampling.

[0023] The drilling rig body 1 is started, driving the sampling drill barrel 11 to move vertically downwards to drill and sample the asphalt pavement. During this process, the top rod 21 can slide adaptively along the inner wall of the through groove 2 without interfering with the normal sampling action of the sampling drill barrel 11. When the sampling drill barrel 11 completes sampling and moves upwards, the sampling drill barrel 11 carries the asphalt sample upwards synchronously. At this time, the top rod 21 forms a rigid contact with the bottom of the asphalt sample, and the top rod 21 generates an upward supporting thrust on the asphalt sample.

[0024] As the sampling drill barrel 11 continues to move upward, the supporting force of the top rod 21 on the asphalt sample gradually exceeds the adhesion force between the sample and the inner wall of the sampling drill barrel 11, causing the asphalt sample to automatically detach from the drilling chamber of the sampling drill barrel 11. The entire process only requires the operator to control the lifting and lowering of the sampling drill barrel 11 to complete the entire process from asphalt sampling to detachment, without the need for manual intervention in the material handling operation.

[0025] This operation process can significantly shorten the sampling time for a single sampling, reduce the total time spent on multi-point testing, and effectively avoid construction delays caused by traditional manual operation. At the same time, since the top rod 21 directly acts on the sample to achieve sample removal, there is no need to push the sample through the transmission components in the chute, which fundamentally avoids the interference of asphalt drilling debris on the transmission components, ensuring the continuity and stability of the sampling and testing process.

[0026] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the positioning mechanism includes a first sliding groove 23, a guide rod 24, and a guide channel 25. The first sliding groove 23 is located on the side of the support frame 22 near the top rod 21, and the first sliding groove 23 slides in cooperation with the top rod 21. The guide rod 24 is located between the drilling rig body 1 and the top rod 21. The guide channel 25 is located on the side of the support frame 22 near the guide rod 24, and the guide channel 25 slides in cooperation with the guide rod 24. The top rod 21 and the first sliding groove 23 form a sliding guide pair, and the guide rod 24 and the guide channel 25 form a sliding guide pair. The positioning mechanism also includes a connecting plate 26, an elastic reset member 27, and a limiting mechanism. The two ends of the connecting plate 26 are fixedly connected to the top rod 21 and the guide rod 24, respectively. The elastic reset member 27 is sleeved on the lower end of the guide rod 24, and the two ends of the elastic reset member 27 are fixedly connected to the support frame 22 and the guide rod 24, respectively. The limiting mechanism is located between the support frame 22 and the guide rod 24, and the limiting mechanism is used to prevent the guide rod 24 from moving along the guide rod 24. The guide groove 25 enables sliding motion; the limiting mechanism includes a first toothed plate 28, a second toothed plate 29, and a displacement assembly; the first toothed plate 28 is fixedly mounted on the guide rod 24; the second toothed plate 29 meshes with the first toothed plate 28; the displacement assembly is disposed between the support frame 22 and the second toothed plate 29, and is used to drive the second toothed plate 29 to move linearly; the displacement assembly includes a second sliding groove 210, a bolt 211, and a threaded tube 212; the second sliding groove 210 is opened on the side of the support frame 22 near the second toothed plate 29, and the second sliding groove 210 slides with the second toothed plate 29; one end of the bolt 211 is rotatably connected to the side of the second toothed plate 29 away from the first toothed plate 28; the threaded tube 212 is threadedly connected to the bolt 211, and the threaded tube 212 is fixedly connected to the support frame 22; the second toothed plate 29 and the second sliding groove 210 form a sliding guide pair, and the cross-sectional shape of the second sliding groove 210 is rectangular.

[0027] Specifically, the elastic reset element 27 is preferably a spring.

[0028] After the support frame 22 is assembled with the drilling rig body 1, the push rod 21 stands vertically on the support frame 22 under the action of the elastic reset member 27. At this time, the push rod 21 is in the initial position away from the through groove 2. The operator can apply downward pressure to the push rod 21 according to the expected thickness parameters of the asphalt sample to be collected, and control the downward movement distance of the push rod 21.

[0029] As the push rod 21 moves downward, it synchronously drives the guide rod 24 downward through the connecting plate 26. During this process, the push rod 21 slides along the first sliding groove 23, and the guide rod 24 slides along the guide groove 25. The push rod 21 and the first sliding groove 23 form a sliding guide pair, and the guide rod 24 and the guide groove 25 form a sliding guide pair. Through the constraint of the double sliding guide pair, it is ensured that there is no wobbling or deviation during the downward movement of the push rod 21 and the guide rod 24, so that the push rod 21 can be stably inserted into the through groove 2 and slide along the inner wall of the through groove 2.

[0030] When the push rod 21 moves down along the through groove 2 to the preset height, the bolt 211 is rotated; utilizing the threaded connection between the bolt 211 and the threaded tube 212, the bolt 211 moves along the axial direction of the threaded tube 212, thereby pushing the second toothed plate 29 to slide along the second slide groove 210. The second toothed plate 29 and the second slide groove 210 form a sliding guide pair, and the cross-section of the second slide groove 210 is rectangular, which can limit the radial displacement of the second toothed plate 29 during the sliding process, so that the second toothed plate 29 stably approaches the first toothed plate 28 and achieves engagement, and can maintain a stable state after engagement.

[0031] After the second toothed plate 29 and the first toothed plate 28 are stably engaged, the guide rod 24 is restricted within the guide groove 25 and cannot move. The guide rod 24 forms a rigid limit on the top rod 21 through the connecting plate 26, keeping the top rod 21 stationary at a preset height position. When the sampling drill barrel 11 completes sampling and moves upward, the top rod 21 can stably abut against the bottom of the asphalt sample, and the supporting thrust of the top rod 21 causes the asphalt sample to quickly detach from the sampling drill barrel 11.

[0032] Working principle: First, place the main body 1 of the drilling rig at the designated position on the asphalt pavement, so that the sampling drill barrel 11 is precisely aligned with the sampling point; then, use screws and other fasteners to fix the support frame 22 to the main body 1 of the drilling rig, and then press the top rod 21 to insert the top rod 21 into the through groove 2. When the top rod 21 moves down to the preset height, rotate the bolt 211 to make the second toothed plate 29 mesh with the first toothed plate 28, so that the top rod 21 remains stationary at the preset height position. When the sampling drill barrel 11 completes sampling and moves upward, the supporting thrust of the top rod 21 can cause the asphalt sample to quickly detach from the sampling drill barrel 11.

[0033] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An asphalt testing device for road construction, comprising a drilling rig body (1), wherein a sampling drill cylinder (11) is fixedly installed at the working end of the drilling rig body (1), characterized in that, Two through slots (2) are opened on the upper side of the sampling drill barrel (11), and the through slots (2) are connected to the asphalt sample placement space inside the sampling drill barrel (11). A push rod (21) is provided directly above the through groove (2), and the number of push rods (21) corresponds one-to-one with the number of through grooves (2); A support frame (22) is provided on the outside of the top rod (21), and the support frame (22) is fixedly connected to the drilling rig body (1); A positioning mechanism for controlling the displacement distance of the top rod (21) is provided between the support frame (22) and the top rod (21).

2. The asphalt testing device for road construction according to claim 1, characterized in that, The positioning mechanism includes a first slide (23), a guide rod (24), and a guide groove (25); The first groove (23) is opened on the side of the support frame (22) near the top rod (21), and the first groove (23) slides in cooperation with the top rod (21); The guide rod (24) is positioned between the drilling rig body (1) and the top rod (21); The guide groove (25) is opened on the side of the support frame (22) near the guide rod (24), and the guide groove (25) and the guide rod (24) are in sliding fit.

3. The asphalt testing device for road construction according to claim 2, characterized in that, The push rod (21) and the first slide groove (23) form a sliding guide pair, and the guide rod (24) and the guide groove (25) form a sliding guide pair.

4. The asphalt testing device for road construction according to claim 1, characterized in that, The positioning mechanism also includes a connecting plate (26), an elastic reset component (27), and a limiting mechanism; The two ends of the connecting plate (26) are fixedly connected to the top rod (21) and the guide rod (24) respectively; The elastic reset component (27) is sleeved with the lower end of the guide rod (24), and the two ends of the elastic reset component (27) are fixedly connected to the support frame (22) and the guide rod (24) respectively; The limiting mechanism is located between the support frame (22) and the guide rod (24). The limiting mechanism is used to prevent the guide rod (24) from sliding along the guide groove (25).

5. The asphalt testing device for road construction according to claim 4, characterized in that, The limiting mechanism includes a first toothed plate (28), a second toothed plate (29), and a displacement assembly; The first toothed plate (28) is fixedly installed on the guide rod (24); The second toothed plate (29) meshes with the first toothed plate (28); The displacement assembly is disposed between the support frame (22) and the second toothed plate (29), and is used to drive the second toothed plate (29) to move linearly.

6. The asphalt testing device for road construction according to claim 5, characterized in that, The displacement assembly includes a second slide (210), a bolt (211), and a threaded tube (212); The second slide groove (210) is provided on the side of the support frame (22) near the second toothed plate (29), and the second slide groove (210) and the second toothed plate (29) are in sliding engagement; One end of the bolt (211) can be rotatably connected to the side of the second toothed plate (29) away from the first toothed plate (28); The screw tube (212) is threadedly connected to the bolt (211), and the screw tube (212) is fixedly connected to the support frame (22).

7. The asphalt testing device for road construction according to claim 6, characterized in that, The second toothed plate (29) and the second slide groove (210) form a sliding guide pair, and the cross-sectional shape of the second slide groove (210) is rectangular.

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