A sampling device for detecting road asphalt

Abstract

The utility model relates to road surface asphalt sampling equipment technical field, concretely is a kind of sampling equipment of road surface asphalt detection, the utility model includes support frame, the top of support frame is provided with the support sleeve that can be up and down active, motor is fixedly installed in the inside of support sleeve, the output of motor is fixedly connected with the communicating pipe, the bottom of communicating pipe is fixedly connected with blade, blade is used to rub broken road surface asphalt layer;Elastic connecting mechanism is arranged between support frame and support sleeve, the utility model is when carrying out road surface asphalt sampling, foot treads pedal, cooperates manual holding handle, so that the control of sampling equipment is more stable, avoid equipment vibration to produce lateral displacement, cause damage to the asphalt pavement outside sampling position, when applying pressure downward simultaneously, since pedal is resisted and touches on the road surface, the downward distance of support sleeve, motor, communicating pipe and blade can be limited, avoid blade excessive downward, cause damage to subgrade deep layer.

Description

Technical Field

[0001] This utility model relates to the technical field of road asphalt sampling equipment, specifically a sampling device for road asphalt testing. Background Technology

[0002] By sampling the asphalt pavement, key indicators such as the mix proportion, compaction degree, void ratio, thickness, and aging degree of the asphalt mixture can be accurately analyzed in the laboratory to verify whether it meets the design specifications and construction requirements.

[0003] In the prior art, such as the novel road surface quality testing sampler proposed in patent application number "CN201721714118.6", it includes a motor, a cylindrical frame, a handle, a sample storage box, a micro air pump, a gas absorption box, a bellows, a spring, and an annular base plate; the bottom edge of the sample storage box is uniformly provided with circumferentially serrated edges.

[0004] However, the asphalt sampling device proposed in the above-mentioned patent application uses a handheld device with a motor driving the blades to rotate and crush the road surface to sample asphalt. However, it is difficult to guarantee the stability of the sampling device by using only a handheld device. The sampling device is prone to damage to the road surface outside the sampling position due to mechanical vibration, or excessive downward movement of the road surface during crushing, causing damage to the deep subgrade. Utility Model Content

[0005] The purpose of this invention is to provide a sampling device for testing asphalt pavement, so as to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A sampling device for testing asphalt pavement includes a support frame. The top of the support frame is provided with a support sleeve that can move up and down. A motor is fixedly installed inside the support sleeve. The output end of the motor is fixedly connected to a connecting pipe. A blade is fixedly connected to the bottom of the connecting pipe. The blade is used to rub and break the asphalt layer of the pavement.

[0008] An elastic connection mechanism is provided between the support frame and the support sleeve. The elastic support mechanism is used to connect the support frame and the support sleeve. Support rods are fixedly connected to both sides of the support frame, and a foot pedal is fixedly connected to the bottom of the support rod.

[0009] Preferably, a corrugated pipe is fixedly connected to the bottom of the support frame, a movable ring is fixedly connected to the bottom of the corrugated pipe, a return spring is fixedly connected between the movable ring and the bottom of the support frame and inside the corrugated pipe, and the bottom of the connecting pipe passes through the movable ring.

[0010] Preferably, the elastic connection mechanism includes an annular connector, which is fixed to the bottom of the support sleeve. An annular groove is provided at the bottom of the annular connector, and a sealing gasket is fixedly connected to the inner wall of the annular groove. The top of the support frame extends into the annular groove, and a first support spring is fixedly connected between the top of the support frame and the inner wall of the annular connector.

[0011] Preferably, a support ring is fixedly connected to the inner wall of the support frame, a connecting ring is fixedly connected to the bottom of the annular connector and located inside the support frame, and a second support spring is fixedly connected between the support ring and the connecting ring.

[0012] Preferably, a limiting plate is fixedly connected to the support ring, and the top of the limiting plate is horizontally bent to form a limiting part.

[0013] Preferably, a through hole is provided on one side of the connecting pipe, and an air pump and a gas absorption box with a sodium hydroxide container are fixedly installed on the support frame. The air inlet of the air pump is connected to the inside of the support frame, and the air outlet of the air pump is connected to an outlet pipe that extends into the inside of the gas absorption box.

[0014] The beneficial effects of this utility model are:

[0015] This invention allows for more stable control of the sampling equipment by stepping on a pedal and manually supporting the handle during asphalt road sampling. This prevents lateral displacement caused by equipment vibration, which could damage the asphalt road surface outside the sampling location. At the same time, when downward pressure is applied, the pedal, which is in contact with the road surface, can limit the downward movement of the support sleeve, motor, connecting pipe, and blade, preventing the blade from moving too far downward and causing damage to the deeper layers of the roadbed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 A schematic diagram of the structure of the flexible connection mechanism;

[0019] Figure 3 This is a utility model Figure 2 A schematic diagram showing the connection between the middle support ring and the connecting ring;

[0020] Figure 4 This is a utility model Figure 1A schematic diagram of the gas absorption box in the middle.

[0021] The attached figures are labeled as follows:

[0022] 1. Support frame; 2. Support sleeve; 201. Handle; 3. Motor; 4. Connecting pipe; 401. Blade; 402. Through hole; 5. Support rod; 6. Pedal; 7. Bellows; 701. Return spring; 8. Movable ring; 9. Annular connector; 10. Sealing gasket; 11. First support spring; 12. Support ring; 13. Connecting ring; 14. Second support spring; 15. Limiting plate; 151. Limiting part; 16. Air pump; 17. Gas absorption box; 171. Connecting nozzle; 172. Liquid outlet nozzle; 18. Gas outlet pipe. Detailed Implementation

[0023] 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.

[0024] like Figure 1 A sampling device for road asphalt testing includes a support frame 1, a support sleeve 2 that can move up and down is provided on the top of the support frame 1, the support frame 1 is tubular, both the support frame 1 and the support sleeve 2 are made of steel, and there are handles 201 on both sides of the support sleeve 2, so that the handles 201 can be manually pulled to move the support sleeve 2 up and down.

[0025] A motor 3 is fixedly installed inside the support sleeve 2. The motor 3 has a built-in power supply and a corresponding control switch is set outside the support sleeve 2. The output end of the motor 3 is fixedly connected to a connecting pipe 4. The bottom of the connecting pipe 4 is open, allowing gas to enter the connecting pipe 4. A blade 401 is fixedly connected to the bottom of the connecting pipe 4. The blade 401 is used to rub and break the asphalt layer of the road surface.

[0026] like Figure 1 and Figure 2 An elastic connection mechanism is provided between the support frame 1 and the support sleeve 2. The elastic support mechanism is used to connect the support frame 1 and the support sleeve 2. Support rods 5 are fixedly connected to both sides of the support frame 1. A pedal 6 is fixedly connected to the bottom of the support rods 5. The top and bottom of the pedal 6 are designed with uneven anti-slip features, which can improve the friction between the foot and the pedal 6 when the foot is on the pedal 6, as well as the friction between the pedal 6 and the road surface.

[0027] like Figure 1A bellows 7 is fixedly connected to the bottom of the support frame 1, and a movable ring 8 is fixedly connected to the bottom of the bellows 7. A return spring 701 is fixedly connected between the movable ring 8 and the bottom of the support frame 1 and inside the bellows 7. The bottom of the connecting pipe 4 passes through the movable ring 8. The movable ring 8 has an opening to facilitate the passage of the connecting pipe 4, so that the movable ring 8 does not affect the rotation of the connecting pipe 4.

[0028] like Figure 1 , Figure 2 and Figure 3 The elastic connection mechanism includes an annular connector 9, which is fixed to the bottom of the support sleeve 2. An annular groove is provided at the bottom of the annular connector 9, and a sealing gasket 10 is fixedly connected to the inner wall of the annular groove. The top of the support frame 1 extends into the annular groove. The sealing gasket 10 is located between the support frame 1 and the annular connector 9, which can improve the sealing between the support frame 1 and the annular connector 9. A first support spring 11 is fixedly connected between the top of the support frame 1 and the inner wall of the annular connector 9, and the first support spring 11 provides elastic support for the annular connector 9 and the support sleeve 2.

[0029] like Figure 2 and Figure 3 A support ring 12 is fixedly connected to the inner wall of the support frame 1. A connecting ring 13 is fixedly connected to the bottom of the annular connector 9 and located inside the support frame 1. Both the support ring 12 and the connecting ring 13 have openings in their centers, allowing the connecting pipe 4 to pass through them. A second support spring 14 is fixedly connected between the support ring 12 and the connecting ring 13.

[0030] like Figure 2 and Figure 3 A limiting plate 15 is fixedly connected to the support ring 12. The top of the limiting plate 15 is bent horizontally to form a limiting part 151. The limiting part 151 can limit the upward movement distance of the connecting ring 13, thereby limiting the upward movement distance of the annular connecting piece 9 and the support sleeve 2, so that the vertical movement of the support sleeve 2 will not separate from the support frame 1.

[0031] like Figure 1 and Figure 4 A through hole 402 is provided on one side of the connecting pipe 4. An air pump 16 and a gas absorption box 17 with a sodium hydroxide container are fixedly installed on the support frame 1. The air pump 16 is existing technology, with a built-in power supply and a corresponding external control switch. The air inlet of the air pump 16 is connected to the inside of the support frame 1, and the air outlet of the air pump 16 is connected to an air outlet pipe 18, which extends into the inside of the gas absorption box 17.

[0032] A connecting nozzle 171 and a liquid outlet 172 with valves are fixedly connected to one side of the gas absorption box 17. Both the connecting nozzle 171 and the liquid outlet 172 are manual valves. Opening the valve on the liquid outlet 172 allows for the recovery and detection of sodium hydroxide solution at the liquid outlet 172. Opening the valve on the connecting nozzle 171 allows for the replenishment of sodium hydroxide solution into the gas absorption box 17 through the connecting nozzle 171.

[0033] When taking samples, the valve on the connecting nozzle 171 is also opened so that the gas after passing through the sodium hydroxide solution can be discharged through the connecting nozzle 171.

[0034] The working principle of the sampling device for road asphalt testing provided by this utility model is as follows:

[0035] When pedal 6 is placed on the road surface, first step on pedal 6 and hold handle 201 with both hands to manually apply downward pressure. When motor 3 is started, motor 3 drives connecting pipe 4 to rotate, connecting pipe 4 drives blade 401 to rotate. Blade 401 rubs and breaks the asphalt on the road surface, generating asphalt gas. After breaking the asphalt on the road surface, the broken asphalt can be sampled and the sample can be stored and transferred to the laboratory for testing.

[0036] The air pump 16 absorbs the generated asphalt gas through the opening at the bottom of the through hole 402 and the connecting pipe 4 inside the support frame 1, and then inputs it into the gas absorption box 17 through the air outlet pipe 18. The asphalt gas is absorbed by the sodium hydroxide solution inside the gas absorption box 17, and the excess air is discharged through the liquid outlet 172.

[0037] When the handle 201 is pressed down, the support sleeve 2 and the motor 3 move downward. Since the pedal 6 is in contact with the road surface, the support frame 1 cannot move downward. The downward movement of the support sleeve 2 is restricted by the first support spring 11, the second support spring 14 and the support frame 1, thereby limiting the downward movement distance of the motor 3 connecting pipe 4 and the blade 401.

[0038] Compared with related technologies, the sampling device for road asphalt testing provided by this utility model has the following beneficial effects:

[0039] This invention allows for more stable control of the sampling equipment by stepping on the pedal 6 and using the manual support handle 201 during asphalt road sampling. This prevents lateral displacement caused by equipment vibration, which could damage the asphalt road surface outside the sampling location. At the same time, when downward pressure is applied, the pedal 6, which is in contact with the road surface, can limit the downward movement of the support sleeve 2, motor 3, connecting pipe 4, and blade 401, preventing the blade 401 from moving too far downward and causing damage to the deeper layers of the roadbed.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A sampling device for road asphalt testing, comprising a support frame (1), characterized in that, The top of the support frame (1) is provided with a support sleeve (2) that can move up and down. A motor (3) is fixedly installed inside the support sleeve (2). The output end of the motor (3) is fixedly connected to a connecting pipe (4). A blade (401) is fixedly connected to the bottom of the connecting pipe (4). The blade (401) is used to rub and break the asphalt layer of the road surface. An elastic connection mechanism is provided between the support frame (1) and the support sleeve (2). The elastic support mechanism is used to connect the support frame (1) and the support sleeve (2). Support rods (5) are fixedly connected to both sides of the support frame (1), and a pedal (6) is fixedly connected to the bottom of the support rods (5).

2. The sampling device for road asphalt testing according to claim 1, characterized in that, The bottom of the support frame (1) is fixedly connected to a bellows (7), the bottom of the bellows (7) is fixedly connected to a movable ring (8), a return spring (701) is fixedly connected between the movable ring (8) and the bottom of the support frame (1) and inside the bellows (7), and the bottom of the connecting pipe (4) passes through the movable ring (8).

3. The sampling device for road asphalt testing according to claim 1, characterized in that, The elastic connection mechanism includes an annular connector (9), which is fixed to the bottom of the support sleeve (2). An annular groove is provided at the bottom of the annular connector (9), and a sealing gasket (10) is fixedly connected to the inner wall of the annular groove. The top of the support frame (1) extends into the annular groove, and a first support spring (11) is fixedly connected between the top of the support frame (1) and the inner wall of the annular connector (9).

4. The sampling device for road asphalt testing according to claim 3, characterized in that, The inner wall of the support frame (1) is fixedly connected to a support ring (12), and the bottom of the annular connector (9) and inside the support frame (1) is fixedly connected to a connecting ring (13). A second support spring (14) is fixedly connected between the support ring (12) and the connecting ring (13).

5. The sampling device for road asphalt testing according to claim 4, characterized in that, A limiting plate (15) is fixedly connected to the support ring (12), and the top of the limiting plate (15) is bent horizontally to form a limiting part (151).

6. The sampling device for road asphalt testing according to claim 1, characterized in that, A through hole (402) is provided on one side of the connecting pipe (4). An air pump (16) and a gas absorption box (17) with a sodium hydroxide container are fixedly installed on the support frame (1). The air inlet of the air pump (16) is connected to the inside of the support frame (1). The air outlet of the air pump (16) is connected to an air outlet pipe (18). The air outlet pipe (18) extends into the inside of the gas absorption box (17).

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