Detection sampling device for hardened cement road

Abstract

The utility model provides a detection sampling device for a hardened cement road. Relates to the technical field of road detection. The detecting and sampling device for the hardened cement road comprises a bearing table, two supporting plates are fixedly mounted at the bottom of the bearing table, a lifting sliding table is arranged between the two supporting plates, a hollow seat is fixedly mounted at the top of the lifting sliding table, and a bearing rotating rod is rotatably mounted in the hollow seat; one end of the bearing rotating rod extends out of the hollow base and is fixedly provided with a conversion disc, four transverse protruding plates distributed in an annular array mode are fixedly installed on the conversion disc, connecting shafts are rotatably installed on the four transverse protruding plates, drill bits are fixedly installed at the ends of the four connecting shafts, the diameters of the four drill bits are different, and the diameter of the conversion disc is larger than that of the connecting shafts. And a supporting frame is fixedly mounted at the top of the hollow seat. The sampling device has the advantages that the sampling depth is accurate, and the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of road inspection technology, and in particular to a sampling device for testing cement roads after hardening. Background Technology

[0002] Currently, after the completion of cement road construction, core sampling is required to assess the road surface quality, determine its structural strength, and compare it with the requirements needed during construction to ensure that the road surface meets the usage standards. The common sampling and testing method is to take samples using a road core sampling machine and then send the samples to a testing center for specialized testing.

[0003] However, it has been found that common road coring machines on the market have several drawbacks. When taking samples, it is necessary to extract samples at the corresponding depth according to the actual road conditions. However, commonly used coring machines have difficulty drilling samples at the corresponding depths accurately, which leads to deviations in sample standards and affects subsequent testing. Furthermore, different road surfaces require core samples of different diameters, and traditional coring machines have difficulty flexibly adjusting the diameter of the sampling drill bit, which reduces sampling efficiency.

[0004] Therefore, it is necessary to provide a new sampling device for testing cement roads after hardening to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a sampling device for testing hardened cement roads with more accurate sampling depth and improved sampling efficiency.

[0006] To solve the above-mentioned technical problems, the sampling device for testing hardened cement roads provided by this utility model includes: a support platform, two support plates fixedly installed at the bottom of the support platform, a lifting slide between the two support plates, a hollow seat fixedly installed at the top of the lifting slide, a load-bearing rotating rod rotatably installed inside the hollow seat, one end of the load-bearing rotating rod extending outside the hollow seat and fixedly installed with a conversion disc, four horizontal convex plates arranged in a circular array fixedly installed on the conversion disc, a connecting shaft rotatably installed on each of the four horizontal convex plates, and a drill bit fixedly installed at the end of each of the four connecting shafts, the four drill bits having different diameters; and a support frame fixedly installed at the top of the hollow seat. A first internal threaded sleeve is rotatably mounted on the support platform. A first lifting screw is threaded onto the first internal threaded sleeve. The bottom end of the first lifting screw is fixedly connected to the support frame. Two second internal threaded sleeves are rotatably mounted on the support platform. A second lifting screw is threaded onto each of the two second internal threaded sleeves. A scale bar is fixedly mounted at the bottom end of each of the two second lifting screws. A locking baffle is fixedly mounted at the bottom end of each of the two scale bars. A first electric push rod is fixedly mounted on each of the two support plates. A positioning frame is fixedly mounted on the output shaft of each of the two first electric push rods. The two scale bars pass through the two positioning frames respectively and are movably connected to the corresponding positioning frames.

[0007] Preferably, the outer ring wall of the load-bearing rotating rod is provided with four locking slots arranged in a ring array. The same lifting plate is slidably installed on both sides of the support frame. A positioning column is fixedly installed at the bottom of the lifting plate. The bottom end of the positioning column passes through the top of the hollow seat and extends into the corresponding locking slot. The positioning column is slidably connected to the top of the hollow seat.

[0008] Preferably, two compression springs are fixedly installed on the top of the lifting plate, and the top ends of the two compression springs are fixedly connected to the top inner wall of the support frame.

[0009] Preferably, a first servo motor is fixedly installed on each of the four transverse convex plates, and the output shafts of the four first servo motors are respectively fixedly connected to the ends of the four connecting shafts away from the drill bit.

[0010] Preferably, a second servo motor is fixedly installed at the bottom of the support platform. The output shaft of the second servo motor and the first internal threaded sleeve are both fixedly fitted with bevel teeth, which mesh with each other. Synchronous pulleys are fixedly fitted on both of the second internal threaded sleeves, and the same synchronous belt is fitted on the two synchronous pulleys. The first lifting screw passes through the middle of the synchronous belt. U-shaped rods are fixedly installed on the sides of the two support plates that are close to each other. Sliding arms are slidably installed on the two U-shaped rods, and the sides of the two sliding arms that are close to each other are respectively fixedly connected to the two second lifting screws.

[0011] Preferably, two guide slide rods are fixedly installed at the bottom of the support platform, and both guide slide rods pass through the lifting slide and are slidably connected to the lifting slide.

[0012] Preferably, a second electric push rod is fixedly installed on each of the two support plates on the side away from each other, and a ground plate is fixedly installed on the output shaft of the second electric push rod.

[0013] Compared with related technologies, the sampling device for testing hardened cement roads provided by this utility model has the following advantages:

[0014] This invention provides a sampling device for testing hardened cement roads. Through the cooperation of a positioning frame, a scale bar, and a locking baffle, the descent position of the lifting slide can be limited, thus precisely controlling the drilling depth of the drill bit. This allows for the acquisition of cement road samples with accurate dimensions, improving the authority of subsequent test results. Furthermore, by setting multiple drill bits of different diameters on the conversion plate, the device can quickly adjust to the corresponding diameter for core sampling according to actual needs. The adjustment is convenient and quick, effectively improving the extraction of samples of various sizes. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the cement road hardening testing and sampling device provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the front planar structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the lifting slide in this utility model;

[0018] Figure 4 This is a schematic diagram of the back-side connection structure between the load-bearing rotating rod and the conversion disc in this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the transverse convex plate and the connecting shaft in this utility model;

[0020] Figure 6 This is a cross-sectional view of the hollow seat in this utility model.

[0021] The following are the labels in the diagram: 1. Bearing platform; 2. Support plate; 3. Lifting slide; 4. Hollow seat; 5. Load-bearing rotating rod; 6. Converter plate; 7. Horizontal convex plate; 8. Connecting shaft; 9. Drill bit; 10. Support frame; 11. First internal threaded sleeve; 12. First lifting screw; 13. Second internal threaded sleeve; 14. Second lifting screw; 15. Scale bar; 16. Positioning baffle; 17. First electric push rod; 18. Positioning frame; 19. Positioning groove; 20. Lifting plate; 21. Positioning column; 22. Compression spring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figures 1-6 ,in, Figure 1 A schematic diagram of a preferred embodiment of the cement road hardening testing and sampling device provided by this utility model; Figure 2 This is a schematic diagram of the front planar structure of this utility model; Figure 3 This is a schematic diagram of the installation structure of the lifting slide in this utility model; Figure 4 This is a schematic diagram of the back-side connection structure between the load-bearing rotating rod and the conversion disc in this utility model; Figure 5 This is a schematic diagram of the connection structure between the transverse convex plate and the connecting shaft in this utility model; Figure 6 This is a cross-sectional view of the hollow seat in this utility model.

[0024] The sampling device for testing hardened cement roads includes: a support platform 1, with two support plates 2 fixedly installed at the bottom of the support platform 1; two guide rods fixedly installed at the bottom of the support platform 1; a lifting slide 3 slidably installed on the two guide rods; the lifting slide 3 being located between the two support plates 2; a hollow seat 4 fixedly installed on the top of the lifting slide 3; a load-bearing rotating rod 5 rotatably installed inside the hollow seat 4; one end of the load-bearing rotating rod 5 extending outside the hollow seat 4 and fixedly installed on a conversion disk 6; four transverse convex plates 7 arranged in a circular array fixedly installed on the conversion disk 6; and connecting shafts 8 rotatably installed on each of the four transverse convex plates 7; and drill bits 9 fixedly installed at the outward ends of the four connecting shafts 8. The four drill bits 9 have different diameters to meet the extraction of samples of different sizes. Furthermore, a first servo motor is fixedly installed on each of the four transverse convex plates 7, and the output shafts of the four first servo motors are respectively fixedly connected to the ends of the four connecting shafts 8 away from the drill bits 9. A support frame 10 is fixedly installed on the top of the hollow seat 4. A first internally threaded sleeve 11 is rotatably mounted on the platform 1, and a first lifting screw 12 is installed on its internal thread. The bottom end of the first lifting screw 12 is fixedly connected to the support frame 10. A second servo motor is fixedly mounted on the bottom of the platform 1. Both the output shaft and the first internally threaded sleeve 11 are fixedly fitted with bevel gears, which mesh with each other. Two second internally threaded sleeves 13 are rotatably mounted on the platform 1, and a second lifting screw 14 is threaded into each of the two second internally threaded sleeves 13. The bottom ends of the two second lifting screws 14 are fixedly connected to the support frame 10. The drill bit 9 is fixedly installed with a scale bar 15, and a positioning baffle 16 is fixedly installed at the bottom end of each scale bar 15. A first electric push rod 17 is fixedly installed on each of the two support plates 2. A positioning frame 18 is fixedly installed on the output shaft of each of the two first electric push rods 17. The two scale bars 15 pass through the two positioning frames 18 respectively and are movably connected to the corresponding positioning frames 18. The positioning frame 18 can serve as an adjustment point. By observing the position of the positioning frame 18 on the scale bar 15, the drilling depth of the drill bit 9 can be precisely adjusted.

[0025] In the above method, in order to adjust the use of the specified drill bit 9, four locking slots 19 arranged in a ring array are opened on the outer ring wall of the load-bearing rotating rod 5, and the same lifting plate 20 is slidably installed on both sides of the support frame 10. The bottom of the lifting plate 20 is fixedly installed with a positioning post 21. The bottom end of the positioning post 21 penetrates the top of the hollow seat 4 and extends into the corresponding locking slot 19, thereby positioning the conversion plate 6. The positioning post 21 is slidably connected to the top of the hollow seat 4. In addition, two compression springs 22 are fixedly installed on the top of the lifting plate 20. The top ends of the two compression springs 22 are fixedly connected to the top inner wall of the support frame 10. The compression springs 22 can provide an elastic pressure so that the positioning post 21 can be tightly inserted into the locking slot 19.

[0026] In this method, to facilitate the rotation of the two second internal threaded sleeves 13 together, a synchronous pulley is fixedly fitted on each of the two second internal threaded sleeves 13, and the same synchronous belt is fitted on the two synchronous pulleys. The first lifting screw 12 passes through the middle of the synchronous belt, and a U-shaped rod is fixedly installed on the side of each of the two support plates 2 that are close to each other. A sliding arm is slidably installed on each of the two U-shaped rods, and the side of each of the two sliding arms that are close to each other is fixedly connected to the two second lifting screws 14, so that the second lifting screws 14 can be limited.

[0027] In this method, in order to ensure the overall stability of the device during the core extraction process, a second electric push rod is fixedly installed on each of the two support plates 2 on the side that is far apart from each other, and a ground plate is fixedly installed on the output shaft of the second electric push rod.

[0028] The working principle of the sampling and testing device for hardened cement roads provided by this utility model is as follows:

[0029] In the initial state, the output shaft of the first electric push rod 17 is extended. In this device, the distance from the top end face of the positioning frame 18 to the ground is the same as the distance from the bottom of the drill bit 9 to the bottom end face of the lifting slide 3. That is, when the bottom of the lifting slide 3 contacts the top of the positioning frame 18, the bottom of the drill bit 9 just contacts the ground.

[0030] When coring a cement road, first move the device to the designated coring position, then activate the output shaft of the second electric push rod to extend, so that the two ground plates contact the ground to ensure stability. Then, adjust the drill bit 9 according to the actual needs. During adjustment, simply lift the lifting plate 20 to bring the positioning post 21 out of the corresponding slot 19. At this time, the compression spring 22 is in a compressed state. Then rotate the conversion disc 6. When the drill bit 9 to be used is rotated to a perpendicular state to the ground, release the lifting plate 20. The compressed spring 22 will automatically release its elasticity and bring the positioning post 21 into the corresponding slot 19. At this time, the adjustment of the drill bit 9 is completed.

[0031] Then, the drill bit 9 is lowered to contact the ground. During operation, the second servo motor is started directly in the forward direction. The meshing between the two bevel teeth can drive the first internal thread sleeve 11 to rotate. At this time, the first internal thread sleeve 11 lowers with the support frame 10 and the lifting slide 3 until the lifting slide 3 contacts the top of the positioning frame 18. Then, the second servo motor is turned off. At this time, the drill bit 9 just contacts the ground. Then, rotate any one of the second internal thread sleeves 13. Using the threaded engagement between it and the second lifting screw 14, and under the transmission of the synchronous pulley and the synchronous belt, the two second lifting screws 14 lower with the corresponding locking baffles 16. At this time, observe the position of the top end face of the positioning frame 18 on the scale bar 15. Stop rotating the second internal thread sleeve 13 until it is adjusted to the specified scale line position. Then, start the output shaft of the two first electric push rods 17 to retract, so that the positioning frame 18 is separated from the lifting slide 3.

[0032] Next, the first servo motor is started, and its output shaft drives the corresponding connecting shaft 8 and drill bit 9 to rotate. Then, the second servo motor is started in the forward direction, so that the drill bit 9 descends during rotation, thus enabling core sampling. When the lifting slide 3 descends to contact the clamping baffle 16, it means that the drill bit 9 has drilled a sample to the specified depth. Then, the second servo motor is started in the reverse direction to remove the drill bit 9 first, and then the sample is removed.

[0033] Compared with related technologies, the sampling device for testing hardened cement roads provided by this utility model has the following advantages:

[0034] This utility model provides a sampling device for testing cement roads after hardening. Through the cooperation of the positioning frame 18, the scale bar 15, and the locking baffle 16, the descent position of the lifting slide 3 can be limited, thus accurately controlling the drilling depth of the drill bit 9. This allows for the acquisition of cement road samples with precise dimensions, thereby improving the authority of subsequent test results. Furthermore, by setting multiple drill bits 9 of different diameters on the conversion plate 6, the device can be quickly adjusted to the corresponding diameter drill bit 9 for core sampling according to actual needs. The adjustment is convenient and quick, effectively improving the extraction of samples of multiple sizes.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sampling device for testing cement roads after hardening, comprising a support platform, characterized in that, Two support plates are fixedly installed at the bottom of the support platform, and a lifting slide is provided between the two support plates. A hollow seat is fixedly installed at the top of the lifting slide, and a load-bearing rotating rod is rotatably installed inside the hollow seat. One end of the load-bearing rotating rod extends outside the hollow seat and is fixedly installed with a conversion disc. Four transverse convex plates arranged in a circular array are fixedly installed on the conversion disc. A connecting shaft is rotatably installed on each of the four transverse convex plates, and a drill bit with a different diameter is fixedly installed at the end of each of the four connecting shafts. A support frame is fixedly installed at the top of the hollow seat, and a first internal threaded sleeve is rotatably installed on the support platform. The first internal threaded sleeve is internally threaded with a first lifting screw, the bottom end of which is fixedly connected to the support frame. Two second internal threaded sleeves are rotatably mounted on the bearing platform. Each of the two second internal threaded sleeves is internally threaded with a second lifting screw. A scale bar is fixedly mounted at the bottom end of each of the two second lifting screws. A locking baffle is fixedly mounted at the bottom end of each of the two scale bars. A first electric push rod is fixedly mounted on each of the two support plates. A positioning frame is fixedly mounted on the output shaft of each of the two first electric push rods. The two scale bars pass through the two positioning frames respectively and are movably connected to the corresponding positioning frames.

2. The sampling device for testing hardened cement roads according to claim 1, characterized in that, The outer ring wall of the load-bearing rotating rod is provided with four locking slots arranged in a ring array. The same lifting plate is slidably installed on both sides of the support frame. A positioning column is fixedly installed at the bottom of the lifting plate. The bottom end of the positioning column passes through the top of the hollow seat and extends into the corresponding locking slot. The positioning column is slidably connected to the top of the hollow seat.

3. The sampling and testing device for hardened cement roads according to claim 2, characterized in that, Two compression springs are fixedly installed on the top of the lifting plate, and the top ends of the two compression springs are fixedly connected to the top inner wall of the support frame.

4. The sampling and testing device for hardened cement roads according to claim 1, characterized in that, Each of the four transverse convex plates is fixedly mounted with a first servo motor, and the output shafts of the four first servo motors are respectively fixedly connected to the ends of the four connecting shafts away from the drill bit.

5. The sampling and testing device for hardened cement roads according to claim 1, characterized in that, A second servo motor is fixedly installed at the bottom of the support platform. The output shaft of the second servo motor and the first internal threaded sleeve are both fixedly fitted with bevel teeth. The two bevel teeth mesh with each other. Synchronous pulleys are fixedly fitted on the two second internal threaded sleeves. The same synchronous belt is fitted on the two synchronous pulleys. The first lifting screw passes through the middle of the synchronous belt. U-shaped rods are fixedly installed on the sides of the two support plates that are close to each other. Sliding arms are slidably installed on the two U-shaped rods. The sides of the two sliding arms that are close to each other are respectively fixedly connected to the two second lifting screws.

6. The sampling device for testing hardened cement roads according to claim 1, characterized in that, Two guide slide rods are fixedly installed at the bottom of the support platform. Both guide slide rods pass through the lifting slide and are slidably connected to the lifting slide.

7. The sampling device for testing hardened cement roads according to claim 1, characterized in that, A second electric push rod is fixedly installed on each of the two support plates on the side away from each other, and a ground plate is fixedly installed on the output shaft of the second electric push rod.

Images