Portable rapid soil sampling device for compactness test

Abstract

The utility model discloses a portable rapid soil sampling device for a compactness test, which comprises a movable plate trailer with foldable travelling wheels, pedals are hinged and matched to the middle positions of the two sides of the top of the movable plate trailer through hinging pieces, the pedals rotate in the vertical direction, a telescopic frame is arranged at the top of the movable plate trailer, and the telescopic frame is connected with the movable plate trailer. The pedal plate penetrates through the telescopic frame, a self-locking mechanism is arranged on the telescopic frame, the telescopic frame forms detachable limiting fit through the self-locking mechanism, a supporting plate is arranged at the top of the telescopic frame, a soil drilling mechanism is arranged on the supporting plate, and the soil drilling end of the soil drilling mechanism sequentially penetrates through the supporting plate and the movable plate trailer. The handrails are arranged on the supporting plates on the two sides of the soil drilling mechanism, moving is convenient, soil of all depths can be taken, and the soil taking stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sampling equipment, in particular to a portable and rapid soil sampling device for compaction test. Background Technique

[0002] The compaction degree is a key index for controlling the construction quality of subgrade and pavement, and directly affects the service life of the road. The sand replacement method is the most commonly used test method in in-situ density detection. It uses clean and dry uniform sand (particle size 0.25 - 0.50 mm) to replace the filling material in the test pit. The volume of the test pit is determined by the mass of the sand filled into the test pit and the sand bulk density, and the water content of the filler is determined by the drying method to calculate the measured dry density of the sample. Each laboratory mainly uses tools such as hammers, chisels or electric hammers to excavate a test hole with a preset volume during on-site detection.

[0003] Currently, when using the sand replacement method, manual excavation is mostly used for sampling. It is very difficult to ensure that the surface of the soil sampling pit is flat and smooth by hand. There are large errors during the sampling process, and manual sampling takes a long time and has low work efficiency. At the same time, during on-site sampling of compaction degree, the taken-out materials are easy to scatter and not convenient to collect, and due to the long soil sampling time, the water in the materials evaporates, resulting in large errors in the detection data. Therefore, analyze the compaction quality problems during the construction process and find a rapid and convenient digging device for compaction degree detection. Content of the Utility Model

[0004] The utility model provides a portable and rapid soil sampling device for compaction test, aiming to improve the digging efficiency in the sand replacement method test and not have an adverse impact on the sand replacement method test.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A portable and rapid soil sampling device for compaction test includes a mobile trolley with foldable walking wheels. At the middle positions on both sides of the top of the mobile trolley, pedal plates are hinged through hinge parts, and the pedal plates rotate in the vertical direction. A telescopic frame is arranged on the top of the mobile trolley, and the pedal plates pass through the telescopic frame. A self-locking mechanism is arranged on the telescopic frame, and the telescopic frame forms a releasable limit fit through the self-locking mechanism. A support plate is arranged at the top of the telescopic frame, a soil drilling mechanism is arranged on the support plate, and the soil drilling end of the soil drilling mechanism sequentially penetrates through the support plate and the mobile trolley. Handrails are arranged on the support plate on both sides of the soil drilling mechanism.

[0007] Preferably, the mobile trolley includes a bottom plate. At one end of the bottom plate, flip-type walking wheels are arranged oppositely, and the flip-type walking wheels are symmetric about the middle position of the bottom plate. The flip-type walking wheels can be rotatably braked around the bottom plate in the vertical direction. The four corners of the top of the bottom plate form a detachable fixed fit with the bottom of the telescopic frame, and positioning pins are arranged at the four corners of the bottom of the bottom plate.

[0008] More preferably, when the flip-type walking wheel contacts the ground, the bottom of the positioning pin is far from the ground;

[0009] When the flip-type walking wheel flips away from the ground, the positioning pin pierces into the ground.

[0010] Furthermore, the flip-type walking wheel includes a connecting rod. One end of the connecting rod forms a rotatable and brakeable fit with the bottom plate through a bolt, and a rotatable wheel is provided at the other end of the connecting rod;

[0011] A tenon is provided on the bottom plate, and a mortise is provided at the position of the connecting rod corresponding to the tenon. When the connecting rod rotates downward until the tenon and the mortise are butted to form a tenon-mortise fit, the wheel contacts the ground.

[0012] Preferably, when the foot pedal flips, the foot pedal rotates around the hinge and then rests on the bottom plate, and the end of the foot pedal points away from the bottom plate.

[0013] Preferably, the telescopic frame includes four vertically arranged telescopic rods. The four telescopic rods correspond to the four corners of the bottom plate one by one, and each telescopic rod includes a sleeve and an inner rod in a sleeved fit. The sleeve and the inner rod form a releasable limit fit through a self-locking mechanism. The bottom of the sleeve forms a detachable fixed fit with the top of the bottom plate through a lower trimmed flange, and the top of the inner rod passes through the corresponding position of the support plate and then forms a detachable fixed fit with the top of the support plate through an upper trimmed flange.

[0014] More preferably, the four telescopic rods cooperate to form a quadrangular prism. Anti-torsion rods are horizontally arranged between the telescopic rods on three sides, and the self-locking mechanism is arranged on the anti-torsion rods.

[0015] Preferably, the self-locking mechanism includes a limit block arranged on the anti-torsion rod. A horizontally arranged limit joint is movably embedded in the limit block. One end of the limit joint close to the sleeve forms an elastic limit fit with the limit block through a spring. The spring is sleeved on the limit joint. The sleeve and the inner rod are both provided with limit holes. When the limit holes on the sleeve and the inner rod coincide, one end of the limit joint is embedded and clamped in the limit hole, and the other end of the limit joint passes through the limit block and is provided with a traction rope. A pull ring is provided at the end of the traction rope.

[0016] Preferably, the soil drilling mechanism includes a motor arranged on the support plate. The output shaft of the motor passes through the support plate and is concentrically and coaxially linked with a sleeve drill rod. The end of the sleeve drill rod passes through the bottom plate.

[0017] The beneficial effects of the present utility model:

[0018] The overall weight of the device of this patent is light, the volume is small, it is convenient to move over a large range, easy to transport, and the sampling efficiency is high; during on-site sampling, there are positioning pins under the bottom plate, which can fix the device in position, and the sampling accuracy is high; the sleeve drill pipe of this device can collect soil samples while taking soil, improving the efficiency of digging pits in the sand replacement method test and having no adverse impact on the sand replacement method test. Description of the Drawings

[0019] Figure 1 is a three-dimensional external view of the present utility model;

[0020] Figure 2 is an enlarged sectional view of the installation location of the self-locking mechanism of the present utility model;

[0021] Figure 3 are the front view and top view of the present utility model;

[0022] Figure 4 are the front view and top view of the flip-type walking wheel of the present utility model;

[0023] In the figure: 1. Mobile flatbed cart; 101. Bottom plate; 102. Flip-type walking wheel; 1021. Connecting rod; 1022. Wheel; 1023. Bolt; 1024. Mortise; 103. Positioning pin;

[0024] 2. Footrest;

[0025] 3. Telescopic frame; 301. Telescopic rod; 3011. Sleeve; 3012. Inner rod; 302. Anti-torsion rod;

[0026] 4. Self-locking mechanism; 401. Limit hole; 402. Limit joint; 403. Limit block; 404. Towing rope; 405. Pulling ring; 406. Spring;

[0027] 5. Support plate; 6. Handrail;

[0028] 7. Soil drilling mechanism; 701. Motor; 702. Sleeve drill pipe;

[0029] 8. Upper trimming flange; 9. Lower trimming flange. Detailed Implementation Manner

[0030] As follows, the embodiments will be further described with reference to the drawings.

[0031] As Figures 1 to 4As shown, as a preferred Embodiment 1, a portable quick soil sampling device for compaction test includes a mobile trolley 1 with foldable walking wheels. At the middle positions on both sides of the top of the mobile trolley 1, pedal boards 2 are hinged through hinge parts, and the pedal boards 2 rotate in the vertical direction. A telescopic frame 3 is arranged on the top of the mobile trolley 1, and the pedal boards 2 pass through between the telescopic frames 3. A self-locking mechanism 4 is arranged on the telescopic frame 3, and the telescopic frame 3 forms a releasable limit fit through the self-locking mechanism 4. A support plate 5 is arranged on the top of the telescopic frame 3. A soil drilling mechanism 7 is arranged on the support plate 5, and the soil drilling end of the soil drilling mechanism 7 sequentially penetrates through the support plate 5 and the mobile trolley 1. Armrests 6 are arranged on the support plate 5 on both sides of the soil drilling mechanism 7.

[0032] Embodiment 1 provides a portable quick soil sampling device for compaction test. The device can switch between two states of movement and fixation by folding the walking wheels. When walking, lower the wheels 1022 and fix the connecting rod 1021 through the bolt 1023, and retract the pedal board 2.

[0033] When fixing, lift the wheels 1022 and fix the connecting rod 1021 through the bolt 1023, lower the pedal board 2, and insert the positioning pin 103 on the bottom plate 101 into the ground by stepping on the pedal board 2 to complete the fixation, ensuring the stability of subsequent soil sampling. After the soil sampling is completed, directly pull the device out of the soil. After restoring the walking wheels, the soil sample can be transferred through the armrest 6.

[0034] The self-locking mechanism 4 is used to lock the position of the soil drilling mechanism 7 and unlock it during soil drilling. The telescopic frame 3 ensures that the soil drilling mechanism 7 can take soil while moving downward. After the soil sampling is completed, lift the soil drilling mechanism 7 and lock the telescopic frame 3 through the self-locking mechanism 4 to lock the soil sample and the soil drilling mechanism 7 in the initial position, facilitating the subsequent movement of the device and being able to take soil samples at a certain depth.

[0035] As a preferred Embodiment 2, the mobile trolley 1 includes a bottom plate 101. At one end of the bottom plate 101, flip-type walking wheels 102 are arranged oppositely, and the flip-type walking wheels 102 are symmetric about the middle position of the bottom plate 101. The flip-type walking wheels 102 can rotate vertically and be braked around the bottom plate 101. The four corners of the top of the bottom plate 101 form a detachable fixed fit with the bottom of the telescopic frame 3. Positioning pins 103 are arranged at the four corners of the bottom of the bottom plate 101 for fixing with the soil after the walking wheels are lifted to ensure the stability of soil sampling.

[0036] As a preferred Embodiment 3, when the flip-type walking wheels 102 are in contact with the ground, the bottom of the positioning pin 103 is far from the ground to ensure normal movement.

[0037] When the flip-type walking wheels 102 are flipped away from the ground, the positioning pins 103 penetrate into the ground to ensure fixation.

[0038] As a preferred embodiment 4, the flip-type walking wheel 102 includes a connecting rod 1021. One end of the connecting rod 1021 forms a rotatable and brakeable fit with the bottom plate 101 through a bolt 1023, and a rotatable wheel 1022 is provided at the other end of the connecting rod 1021;

[0039] A tenon 1024 is provided on the bottom plate 101, and a mortise is provided at the position of the connecting rod 1021 corresponding to the tenon 1024. When the connecting rod 1021 rotates downward until the tenon 1024 is docked with the mortise to form a tenon-mortise fit, the wheel 1022 contacts the ground. Ensure flipping and fixing.

[0040] As a preferred embodiment 5, when the foot pedal 2 flips, the foot pedal 2 rotates around the hinge and then rests on the bottom plate 101, and the end of the foot pedal 2 points to the side away from the bottom plate 101. Facilitate stepping and ensure fixation during soil extraction.

[0041] As a preferred embodiment 6, the telescopic frame 3 includes four vertically arranged telescopic rods 301. The four telescopic rods 301 correspond to the four corners of the bottom plate 101 one by one, and each telescopic rod 301 includes a sleeve 3011 and an inner rod 3012 that are sleeved and fitted. The sleeve 3011 and the inner rod 3012 form a releasable limit fit through a self-locking mechanism 4. The bottom of the sleeve 3011 forms a detachable fixed fit with the top of the bottom plate 101 through a lower trimming flange 9, and the top of the inner rod 3012 passes through the corresponding position of the support plate 5 and forms a detachable fixed fit with the top of the support plate 5 through an upper trimming flange 8 to ensure the process of drilling downward to extract soil.

[0042] As a preferred embodiment 7, the four telescopic rods 301 cooperate to form a quadrangular prism. Anti-torsion rods 302 are horizontally arranged between the telescopic rods 301 on three sides, and the self-locking mechanism 4 is arranged on the anti-torsion rods 302. Ensure stability during vertical movement.

[0043] As a preferred embodiment 8, the self-locking mechanism 4 includes a limit block 403 arranged on the anti-torsion rod 302. A horizontally arranged limit joint 402 is movably embedded in the limit block 403, and one end of the limit joint 402 close to the sleeve 3011 forms an elastic limit fit with the limit block 403 through a spring 406. The spring 406 is sleeved on the limit joint 402. The sleeve 3011 and the inner rod 3012 are both provided with limit holes 401. When the limit holes 401 on the sleeve 3011 and the inner rod 3012 coincide, one end of the limit joint 402 is embedded and clamped in the limit hole 401, and the other end of the limit joint 402 passes through the limit block 403 and is provided with a traction rope 404. A pull ring 405 is provided at the end of the traction rope 404.

[0044] In the initial state, the spring 406 is in an energy-released state. The limit joint 402 is embedded in the limit hole 401 under the elastic action of the spring 406, so that the sleeve 3011 and the inner rod 3012 are clamped through the limit joint 402, maintaining relative fixation and being able to be determined at this position.

[0045] When taking soil, pull the pull ring 405, pull the limit joint 402 through the traction rope 404, and the spring 406 is in an energy-stored state. At this time, the limit joint 402 falls out of the limit hole 401, and the sleeve 3011 and the inner rod 3012 can have relative displacement, and can move downward to drill and take soil.

[0046] As a preferred embodiment 9, the soil drilling mechanism 7 includes a motor 701 provided on the support plate 5. The output shaft of the motor 701 penetrates through the support plate 5 and is coaxially and concentrically linked with a sleeve drill rod 702 in a cooperative manner. The end of the sleeve drill rod 702 penetrates through the bottom plate 101. To ensure the process of drilling and taking soil.

[0047] The working principle of the present utility model:

[0048] The present utility model provides a portable rapid soil sampling device for compaction test. The device can switch between two forms of movement and fixation through the folding walking wheels. When walking, lower the wheels 1022 and fix the connecting rod 1021 through the bolt 1023, and retract the foot pedal 2.

[0049] When fixing, lift the wheels 1022 and fix the connecting rod 1021 through the bolt 1023, lower the foot pedal 2, and insert the positioning pin 103 on the bottom plate 101 into the ground by stepping on the foot pedal 2 to complete the fixation, ensuring the stability of subsequent soil sampling. After the soil sampling is completed, directly pull the device out of the soil. After restoring the walking wheels, the soil sample can be transferred through the armrest 6.

[0050] The self-locking mechanism 4 is used to lock the position of the soil drilling mechanism 7. Unlock it during soil drilling. The operator steps on the foot pedal 2 and holds the armrest 6 at the same time. The telescopic frame 3 ensures that the soil drilling mechanism 7 can drill and take soil while moving downward. After the soil sampling is completed, lift the soil drilling mechanism 7, lock the telescopic frame 3 through the self-locking mechanism 4, lock the soil sample and the soil drilling mechanism 7 at the initial position, which is convenient for subsequent movement of the device, can also take soil samples at a certain depth, improve the digging efficiency in the sand replacement method test, and will not have an adverse impact on the sand replacement method test.

Claims

1. A portable soil-taking device for compaction test, characterized in that: The invention comprises a mobile cart (1) with foldable running wheels. The middle positions of both sides of the top of the mobile cart (1) are hingedly matched with foot pedals (2) through hinges, and the foot pedals (2) rotate in the vertical direction. A telescopic frame (3) is provided on the top of the mobile cart (1). The foot pedals (2) pass through the telescopic frames (3). The telescopic frames (3) are provided with a self-locking mechanism (4). The telescopic frames (3) form a releasable limited fit through the self-locking mechanism (4). A support plate (5) is provided on the top of the telescopic frame (3). A soil drilling mechanism (7) is provided on the support plate (5). The soil drilling ends of the soil drilling mechanism (7) pass through the support plate (5) and the mobile cart (1) in sequence. Handrails (6) are provided on the support plates (5) located on both sides of the soil drilling mechanism (7).

2. A portable compaction test quick soil taking device according to claim 1, characterized in that: The mobile pallet truck (1) comprises a bottom plate (101), one end of which is provided with flip-type running wheels (102) arranged opposite to each other, and the flip-type running wheels (102) are symmetrical about the middle position of the bottom plate (101), the flip-type running wheels (102) can be braked to rotate in a vertical direction around the bottom plate (101), the top four corners of the bottom plate (101) and the bottom of the telescopic frame (3) form a detachable fixed fit, and the bottom four corners of the bottom of the bottom plate (101) are all provided with positioning pins (103).

3. A portable compaction test quick soil taking device according to claim 2, characterized in that: When the flip-type running wheel (102) is in contact with the ground, the bottom of the positioning pin (103) is away from the ground; When the flip-type running wheel (102) flips over to be away from the ground, the positioning pin (103) pierces the ground.

4. A portable compaction test quick soil taking device according to claim 3, characterized in that: The flip-type running wheel (102) comprises a connecting rod (1021), one end of the connecting rod (1021) forms a brakeable rotational fit with the bottom plate (101) via a bolt (1023), and the other end of the connecting rod (1021) is provided with a rotationally fit wheel (1022); A tenon (1024) is provided on the bottom plate (101), and a mortise groove is provided at a position of the connecting rod (1021) corresponding to the tenon (1024). When the connecting rod (1021) is rotated downward until the tenon (1024) and the mortise groove are butted together to form a mortise and tenon fit, the wheel (1022) contacts the ground.

5. The portable compaction test quick soil taking device according to claim 1, characterized in that: When the foot pedal (2) is turned over, the foot pedal (2) rotates around the hinge and is supported on the base plate (101), and the end of the foot pedal (2) points to the side away from the base plate (101).

6. The portable compaction test quick soil taking device according to claim 1, characterized in that: The telescopic frame (3) comprises four vertically arranged telescopic rods (301), the four telescopic rods (301) corresponding to the four corners of the bottom plate (101) one by one, and each telescopic rod (301) comprises a sleeve (3011) and an inner rod (3012) which are sleeved together, and the sleeve (3011) and the inner rod (3012) form a releasable limited fit through a self-locking mechanism (4), the bottom of the sleeve (3011) forms a detachable fixed fit with the top of the bottom plate (101) through a lower trimming flange (9), and the top of the inner rod (3012) passes through a corresponding position of the support plate (5) and forms a detachable fixed fit with the top of the support plate (5) through an upper trimming flange (8).

7. A portable compaction test quick soil taking device according to claim 6, characterized in that: The four telescopic rods (301) cooperate to form a quadrangular prism, wherein a horizontally arranged anti-torsion rod (302) is provided between the telescopic rods (301) on three sides, and a self-locking mechanism (4) is provided on the anti-torsion rod (302).

8. A portable compaction test quick soil taking device according to claim 7, characterized in that: The self-locking mechanism (4) comprises a limit block (403) provided on the anti-torsion rod (302), a limit joint (402) arranged horizontally being movably embedded in the limit block (403), and an end of the limit joint (402) close to the sleeve (3011) forms an elastic limit fit with the limit block (403) via a spring (406), the spring (406) being sleeved on the limit joint (402), the sleeve (3011) and the inner rod (3012) both being provided with a limit hole (401), when the limit holes (401) on the sleeve (3011) and the inner rod (3012) are overlapped, one end of the limit joint (402) is embedded and clamped in the limit hole (401), the other end of the limit joint (402) is provided with a traction rope (404) after passing through the limit block (403), and a pull ring (405) is provided at the end of the traction rope (404).

9. The portable compaction test quick soil taking device according to claim 1, characterized in that: The soil drilling mechanism (7) comprises a motor (701) arranged on a support plate (5), wherein an output shaft of the motor (701) passes through the support plate (5) and is coaxially linked with a sleeve drill rod (702), wherein the end of the sleeve drill rod (702) passes through a bottom plate (101).

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