Pavement construction quality detection device

Abstract

The utility model relates to a quality detection device, belongs to the technical field of pavement, and particularly relates to a pavement construction quality detection device which comprises an outer cylinder, an inner cylinder is arranged in the outer cylinder, and the bottom of the outer cylinder and the bottom of the inner cylinder are jointly and fixedly connected with a drill bit; through the arrangement of the positioning mechanism, when a drill bit drills into a road surface, a core sample extrudes a supporting plate to drive a sliding block to move upwards, an arc-shaped plate is separated from extrusion of the sliding block, the core sample of the road surface is hard, and a positioning column difficultly penetrates through the core sample, and when the drill bit drills into a soil layer, the soil layer is soft in texture; the positioning column easily penetrates through the soil layer under the elastic force of the telescopic spring and drives the bent plate to move, finally, a worker observes that the threaded cap protrudes out of the outer cylinder, the more accurate pavement thickness can be obtained, and the problem that after a drill bit drills through the pavement layer, the drill bit always continues to drill the soil layer downwards by a certain depth, and the drilling efficiency is high is solved. And the numerical value displayed by the guide rod I and the actual road surface thickness are greatly deviated.

Description

Technical Field

[0001] The utility model relates to the technical field of pavement, in particular to a pavement construction quality detection device. Background Art

[0002] In pavement engineering, the thickness of each layer is closely related to the overall strength of the road. Only when the thickness is guaranteed can the strength of each layer and the whole road surface be guaranteed. Therefore, after the road construction is completed, the road thickness needs to be tested to avoid the road thickness not meeting the standard due to non-standard construction or contractors cutting corners.

[0003] A Chinese patent with the publication number CN218120844U was searched and disclosed a road thickness detection device. It mainly aims at the problem that the existing core drilling machine cannot read the thickness of the sampled road surface intuitively, and manual marking and measurement are required, which is inconvenient to use, and proposes the following technical solutions: it includes an outer cylinder, the inner wall of the outer cylinder is provided with an inner sampling cylinder, the upper part of the inner sampling cylinder is provided with a driving motor installed on the inner wall of the top of the outer cylinder, the output end of the driving motor is connected to a threaded column penetrating the top of the inner sampling cylinder, and the two sides of the inner sampling cylinder are respectively connected to a guide rod 1 and a guide rod 2.

[0004] Based on the above search and combined with the prior art, we found that:

[0005] When the existing device is drilling cores, the staff cannot observe the position of the drill tube. Therefore, after the drill bit penetrates the road surface layer, it often continues to drill down to a certain depth of the soil layer, resulting in a large deviation between the value displayed on the guide rod and the actual road surface thickness. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a pavement construction quality detection device. In the initial state, one of the sliders of the support plate is against the arc plate. When the drill bit drills into the pavement, the core sample squeezes the support plate to move upward, driving the slider to move upward, and the arc plate is separated from the squeezing of the slider, driving the bent plate to move toward the inner cylinder. Since the core sample of the pavement is hard, it is difficult for the positioning column to pass through the core sample. When the drill bit drills into the soil layer, the texture of the soil layer is soft, and the positioning column is easily penetrated by the elastic force of the telescopic spring, driving the bent plate to move. Finally, the staff observes that the threaded cap protrudes from the outer cylinder and immediately stops drilling and sampling. The result displayed by the final scale rod combined with the initial value can obtain a more accurate road thickness and avoid the influence of the soil layer.

[0007] The technical solution to achieve the purpose of the utility model is: a paved road construction quality detection device, including an outer cylinder, an inner cylinder is arranged inside the outer cylinder, a drill bit is fixedly connected to the bottom of the outer cylinder and the bottom of the inner cylinder, and also includes;

[0008] A positioning mechanism, wherein the positioning mechanism is located inside the outer cylinder;

[0009] The positioning mechanism includes a limiting column fixedly connected between the outer cylinder and the inner cylinder, a bending plate slidably sleeved on the limiting column, a curved plate fixedly connected to the top of the bending plate, a supporting plate slidably connected in the inner cylinder, two sliding blocks fixedly connected to the side wall of the supporting plate, two strip holes are provided on the cylindrical inner wall of the inner cylinder, two sliding blocks respectively penetrate the two strip holes, one end of one of the sliding blocks is fitted with the curved plate, a positioning column is fixedly connected to one side of the bending plate, a positioning hole is provided on the cylindrical outer wall of the inner cylinder, and the positioning column is slidably connected to the positioning hole.

[0010] In some embodiments, a telescopic spring is fixedly connected to one side of the bending plate, and one end of the telescopic spring is fixedly connected to the cylindrical inner wall of the outer tube.

[0011] In some embodiments, a connecting rod is fixedly connected to the top of the bending plate, and a top end of the connecting rod extends to the top of the outer wall of the inner cylinder and is fixedly connected to a rack.

[0012] In some embodiments, a rotating gear is rotatably connected to the top of the outer wall of the inner cylinder, the rotating gear is meshed with the rack, the top key of the rotating gear is connected to a threaded rod, a threaded cap is screwed on the threaded rod, a fixing hole is opened at the top of the outer cylinder, and the threaded cap is slidably connected to the fixing hole.

[0013] In some embodiments, the top of another of the sliding blocks is fixedly connected to a support block, the top of the support block is fixedly connected to a return spring, and the top of the return spring is fixedly connected to the top of the inner wall of the outer cylinder.

[0014] In some embodiments, a scale rod is fixedly connected to the top of the support plate, and the scale rod passes through the top of the inner cylinder and the top of the outer cylinder in sequence.

[0015] Compared with the prior art, the present invention has the following significant advantages:

[0016] First, the utility model sets a positioning mechanism. In the initial state, one of the sliders of the support plate is against the arc plate. When the drill bit drills into the road surface, the core sample squeezes the support plate to move upward, driving the slider to move upward, and the arc plate is separated from the squeeze of the slider, driving the bending plate to move toward the inner cylinder. Since the core sample of the road surface is hard, it is difficult for the positioning column to pass through the core sample. When the drill bit drills into the soil layer, the soil layer is soft, and the positioning column is easily penetrated by the elastic force of the telescopic spring, driving the bending plate to move. Finally, the staff can stop drilling and sampling immediately when they observe that the threaded cap protrudes from the outer cylinder. The result displayed by the final scale rod combined with the initial value can obtain a more accurate road surface thickness, avoiding the influence of the soil layer.

[0017] Second, the utility model adopts the setting of the threaded cap. When the drill bit drills into the soil layer, the soil layer is relatively soft. The positioning column is easily penetrated by the elastic force of the telescopic spring, driving the bending plate to move, driving the connecting rod to move, driving the rack to move, driving the rotating gear to rotate, driving the threaded rod to rotate, and driving the threaded cap to move. When the staff observes that the threaded cap protrudes from the outer cylinder, they immediately stop drilling and sampling, which is convenient for the staff to observe the situation under the road surface in time.

[0018] The present invention solves the problem that after the drill bit penetrates the road surface layer, it often continues to drill the soil layer to a certain depth, resulting in a large deviation between the value displayed by the guide rod and the actual road surface thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall front cross-sectional plan structure provided by the utility model in one embodiment;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the inner cylinder, the scale rod and the slider provided in one embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of a three-dimensional structure of a curved plate, a bent plate and a positioning column provided in one embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the rack, rotating gear and threaded nut provided in one embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Outer cylinder; 101. Inner cylinder; 102. Strip hole; 2. Support plate; 201. Scale rod; 202. Slider; 203. Support block; 204. Return spring; 3. Arc plate; 301. Bending plate; 302. Positioning column; 303. Telescopic spring; 304. Limiting column; 4. Drill bit; 5. Rotating gear; 501. Threaded rod; 502. Threaded cap; 503. Rack; 504. Connecting rod. DETAILED DESCRIPTION

[0026] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides a pavement construction quality detection device through improvement. The technical solution of the utility model is:

[0028] like Figure 1-Figure 4 As shown, a paved road construction quality detection device comprises an outer cylinder 1, an inner cylinder 101 is arranged inside the outer cylinder 1, a drill bit 4 is fixedly connected to the bottom of the outer cylinder 1 and the bottom of the inner cylinder 101, and also comprises: a positioning mechanism, the positioning mechanism is located inside the outer cylinder 1; the positioning mechanism comprises a limiting column 304 fixedly connected between the outer cylinder 1 and the inner cylinder 101, the setting of the limiting column 304 helps the movement and limitation of the bending plate 301, the limiting column 304 is slidably sleeved with the bending plate 301, the top of the bending plate 301 is fixedly connected with the arc plate 3, the inner cylinder 101 is slidably connected with a support plate 2, the side wall of the support plate 2 is fixedly connected with two sliders 202, the cylindrical inner side wall of the inner cylinder 101 is provided with two strip holes 102, the two sliders 202 respectively penetrate the two strip holes 102, one end of one of the sliders 202 is in contact with the arc plate 3, one side of the bending plate 301 is fixedly connected with the positioning column 302, the inner A positioning hole is provided on the cylindrical outer wall of the tube 101, and the positioning column 302 is slidably connected to the positioning hole; through the setting of the positioning mechanism, in the initial state, one of the sliders 202 of the support plate 2 is against the arc plate 3, and when the drill bit 4 drills into the road surface, the core sample squeezes the support plate 2 to move upward, driving the slider 202 to move upward, and the arc plate 3 is separated from the squeezing of the slider 202, driving the bending plate 301 to move toward the inner tube 101. Since the core sample of the road surface is hard, it is difficult for the positioning column 302 to pass through the core sample, and when the drill bit 4 drills into the soil layer, the texture of the soil layer is soft, and the positioning column 302 is easily penetrated by the elastic force of the telescopic spring 303, driving the bending plate 301 to move, and finally the staff observes that the threaded cap 502 protrudes from the outer tube 1, and immediately stops drilling and sampling. The result displayed by the final scale rod 201 combined with the initial value can obtain a more accurate road surface thickness, avoiding the influence of the soil layer.

[0029] like Figure 3 As shown, in one embodiment, in order to extend the service life, the telescopic spring 303 is made of metal, one side of the bending plate 301 is fixedly connected with the telescopic spring 303, and one end of the telescopic spring 303 is fixedly connected to the cylindrical inner wall of the outer tube 1; through the setting of the telescopic spring 303, it is achieved to provide elastic force for the bending plate 301, drive the positioning column 302 to move, and facilitate the positioning column 302 to penetrate the soil layer.

[0030] like Figure 4As shown, in one embodiment, the setting of the connecting rod 504 makes it convenient for the staff on the road surface to observe the situation under the road surface in time. The top of the bending plate 301 is fixedly connected with the connecting rod 504, and the top of the connecting rod 504 extends to the top of the outer wall of the inner tube 101 and is fixedly connected with the rack 503; through the setting of the rack 503, since the rack 503 is engaged with the rotating gear 5, the movement of the connecting rod 504 is realized, which drives the rack 503 to move, drives the rotating gear 5 to rotate, drives the threaded rod 501 to rotate, and drives the threaded cap 502 to move.

[0031] like Figure 4 As shown, in one embodiment, the top of the outer wall of the inner cylinder 101 is rotatably connected with a rotating gear 5, and the rotating gear 5 is meshed with the rack 503. In order to reduce gear wear, the rotating gear 5 and the rack 503 are both self-lubricating gears. The top key of the rotating gear 5 is connected with a threaded rod 501, and a threaded cap 502 is screwed on the threaded rod 501. A fixing hole is opened at the top of the outer cylinder 1, and the threaded cap 502 is slidably connected in the fixing hole; through the setting of the threaded cap 502, when the drill bit 4 drills into the soil layer, the texture of the soil layer is relatively soft, and the positioning column 302 is easily penetrated by the elastic force of the telescopic spring 303, driving the bending plate 301 to move, driving the connecting rod 504 to move, driving the rack 503 to move, driving the rotating gear 5 to rotate, driving the threaded rod 501 to rotate, and driving the threaded cap 502 to move. The staff observes that the threaded cap 502 protrudes from the outer cylinder 1 and immediately stops drilling and sampling, which is convenient for the staff to observe the situation under the road surface in time.

[0032] like Figure 2 As shown, in one embodiment, the two strip holes 102 are respectively matched with the two sliders 202, and the top of the other slider 202 is fixedly connected with a support block 203, and the top of the support block 203 is fixedly connected with a reset spring 204, and the top of the reset spring 204 is fixedly connected to the top of the inner wall of the outer cylinder 1; through the setting of the reset spring 204, when the core sample is taken out, the support plate 2 loses the extrusion and is subjected to the elastic force of the reset spring 204, driving the support plate 2 to reset, and at the same time rotating the threaded nut 502, driving the rotating gear 5 to rotate, driving the rack 503 to move, driving the connecting rod 504 to move, and driving the bending plate 301 to move, thereby realizing the initial state in which the reset slider 202 fits the arc plate 3.

[0033] like Figure 1As shown, in one embodiment, in order to ensure stability, the scale rod 201 is welded or fixed to the top of the support plate 2 by screws, and the top of the support plate 2 is fixedly connected with the scale rod 201, and the scale rod 201 passes through the top of the inner cylinder 101 and the top of the outer cylinder 1 in sequence; through the setting of the scale rod 201, the staff observes that the threaded cap 502 protrudes from the outer cylinder 1, and immediately stops drilling and sampling. Through the final result displayed by the scale rod 201 and combined with the initial value, a more accurate road surface thickness can be obtained, avoiding the influence of the soil layer.

[0034] The specific working method is as follows: in the initial state, one of the sliders 202 of the support plate 2 is against the arc plate 3. When the drill bit 4 drills into the road surface, the core sample squeezes the support plate 2 to move upward, driving the slider 202 to move upward, and the arc plate 3 is separated from the squeezing of the slider 202, driving the bending plate 301 to move toward the inner cylinder 101. Since the core sample of the road surface is hard, it is difficult for the positioning column 302 to pass through the core sample. When the drill bit 4 drills into the soil layer, the soil layer is soft, and the positioning column 302 is easily penetrated by the elastic force of the telescopic spring 303, driving the bending plate 301 to move, and finally achieving the working method. When the operator observes that the threaded cap 502 protrudes from the outer cylinder 1, he immediately stops drilling and sampling. By using the result displayed by the final scale rod 201 and combining it with the initial value, a more accurate road thickness can be obtained, avoiding the influence of the soil layer. When the core sample is taken out, the support plate 2 loses its extrusion and is subjected to the elastic force of the reset spring 204, which drives the support plate 2 to reset. At the same time, the threaded cap 502 is rotated, which drives the rotating gear 5 to rotate, drives the rack 503 to move, drives the connecting rod 504 to move, and drives the bending plate 301 to move, thereby achieving the initial state in which the reset slider 202 fits the arc plate 3.

[0035] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A pavement construction quality inspection device, comprising an outer cylinder (1), an inner cylinder (101) is arranged inside the outer cylinder (1), a drill bit (4) is fixedly connected to the bottom of the outer cylinder (1) and the bottom of the inner cylinder (101), characterized in that: Also includes; A positioning mechanism, wherein the positioning mechanism is located inside the outer cylinder (1); The positioning mechanism comprises a limiting column (304) fixedly connected between the outer cylinder (1) and the inner cylinder (101); a bending plate (301) is slidably sleeved on the limiting column (304); a curved plate (3) is fixedly connected to the top of the bending plate (301); a support plate (2) is slidably connected inside the inner cylinder (101); two sliding blocks (202) are fixedly connected to the side wall of the support plate (2); two strip holes (102) are provided on the cylindrical inner side wall of the inner cylinder (101); the two sliding blocks (202) respectively penetrate the two strip holes (102); one end of one of the sliding blocks (202) is in contact with the curved plate (3); a positioning column (302) is fixedly connected to one side of the bending plate (301); a positioning hole is provided on the cylindrical outer side wall of the inner cylinder (101); the positioning column (302) is slidably connected to the positioning hole.

2. A paved road construction quality detection device according to claim 1, characterized in that: A telescopic spring (303) is fixedly connected to one side of the bending plate (301), and one end of the telescopic spring (303) is fixedly connected to the cylindrical inner wall of the outer cylinder (1).

3. A paved road construction quality detection device according to claim 1, characterized in that: The top of the bending plate (301) is fixedly connected to a connecting rod (504), and the top end of the connecting rod (504) extends to the top of the outer wall of the inner cylinder (101) and is fixedly connected to a rack (503).

4. A paved road construction quality detection device according to claim 1, characterized in that: The top of the outer wall of the inner cylinder (101) is rotatably connected to a rotating gear (5), the rotating gear (5) is meshed with a rack (503), the top of the rotating gear (5) is key-connected to a threaded rod (501), a threaded cap (502) is screwed onto the threaded rod (501), a fixing hole is opened at the top of the outer cylinder (1), and the threaded cap (502) is slidably connected to the fixing hole.

5. A paved road construction quality detection device according to claim 1, characterized in that: The top of the other slider (202) is fixedly connected to a support block (203), the top of the support block (203) is fixedly connected to a return spring (204), and the top of the return spring (204) is fixedly connected to the top of the inner wall of the outer cylinder (1).

6. A paved road construction quality detection device according to claim 1, characterized in that: A scale rod (201) is fixedly connected to the top of the support plate (2), and the scale rod (201) passes through the top of the inner cylinder (101) and the top of the outer cylinder (1) in sequence.

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