CN202403936U - Portable-type sampler for shallow surface layer - Google Patents

Abstract

The utility model discloses a portable surface shallow sampler, which includes a vibrating body. A variable wire joint is fixedly connected under the vibrating body. A drill pipe is connected to the variable wire joint. It also includes a power head casing and a driving motor. There are holes, the diameter of the end face of the power head shell is larger than the outer diameter of the drive motor, the drive motor is connected to the eccentric shaft through the hole in the end face of the power head shell, the two ends of the eccentric shaft are supported in the vibration body through bearings, and the drive motor and the vibration body Fixed together, the power head shell is arranged outside the vibration body, a hole is opened on the lower surface of the power head shell, the diameter of the hole is larger than the outer diameter of the variable wire joint, and the vibration body is suspended and connected with the power head shell. The utility model has the advantages of simple structure, good mobility, no disturbance, good fidelity and high sampling efficiency, and is especially suitable for sampling in environments with dense population, narrow space and shallow soil.

Description

Portable surface shallow sampler

technical field

The utility model relates to the sampling field, in particular to a portable surface shallow layer sampler. the

Background technique

In the prior art, the method of sampling is often manual excavation of pollution detection points, which is inefficient, expensive, and destroys the distribution of pollution in depth; The heat of the core bit prevents the drill from burning. On the other hand, the viscosity of the mud is used to protect the well wall and prevent collapse. However, the chemical composition of the mud often disturbs the sample greatly. Traditional drilling environment sampling methods and equipment are generally hydraulically driven, requiring a bulky hydraulic power source with high noise and poor mobility. They are not suitable for sampling shallow soil with dense population and small space. The high cost and the above shortcomings make it difficult for traditional sampling methods to adapt to the requirements of modern environmental sampling. the

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a device suitable for sampling the densely populated, narrow space, and shallow soil environment on the surface. The power supply is simple, the sampling cost is low, and the environmental sampling can be carried out by one hand-held operation. , and the fidelity of the samples obtained is good, and it is a portable shallow surface sampler without disturbance. the

The technical scheme of the utility model is achieved in that:

The portable surface shallow sampler includes a vibrating body, a joint is fixedly connected to the bottom of the vibrating body, a drill pipe is connected to the joint, a power head casing and a driving motor are also included, and an end surface of the power head casing is provided with The hole on the end face of the power head shell is larger than the outer diameter of the drive motor, and the drive motor passes through the hole on the end face of the power head shell to connect with the eccentric shaft, and the two ends of the eccentric shaft are supported by bearings. The vibrating body, the drive motor and the vibrating body are fixed together, the power head casing is arranged outside the vibrating body, and the joint or the drill rod is passed through a hole on the lower surface of the power head casing. The vibrating body is suspended and connected to the casing of the power head. the

In the above-mentioned portable shallow surface sampler, the joint is a variable wire joint, the vibrating body is a square, and a vibration isolator is arranged between the power head shell and the vibrating body. the

In the above-mentioned portable shallow surface sampler, there are four vibration isolators, which are respectively arranged above and below the two ends of the power head casing. the

The above-mentioned portable surface shallow layer sampler has two eccentric shafts, and there are also two holes on the end surface of the drive motor and the power head housing. The axial directions of the two eccentric shafts are the same and the axis The center is at the same level, and the two driving motors turn in opposite directions and at the same speed. the

The above-mentioned portable shallow surface sampler has bearing end covers at both ends of the eccentric shaft, and the bearing end covers and the driving motor are fixed on the vibrating body by screws. A sealing ring is arranged between the eccentric shafts. the

The above-mentioned portable shallow surface sampler is provided with handles on opposite sides of the power head casing, and the handles are fixed on the power head casing by screw connection or welding. the

In the above-mentioned portable shallow surface sampler, the inside of the joint is hollow, and the joint and the drill pipe are connected together through a bayonet connection. the

In the above-mentioned portable shallow surface sampler, the eccentric shaft has a shoulder. the

In the above-mentioned portable shallow surface sampler, the eccentric shaft is splined to the driving motor, and the driving motor is an AC asynchronous motor or a DC motor. the

In the above-mentioned portable shallow surface sampler, the drill rod is an aluminum alloy drill rod. the

The beneficial effects of the utility model are: simple structure, good mobility, and the obtained samples have no disturbance, good fidelity and high sampling efficiency, and are especially suitable for environmental sampling with dense population, narrow space and shallow soil. the

Description of drawings

Fig. 1 is the main view structure schematic diagram of the utility model portable surface shallow layer sampler,

Fig. 2 is a schematic diagram of the side structure of the portable surface shallow layer sampler of the present invention. the

In the figure: 1-vibrator, 2-drive motor, 3-eccentric shaft, 4-bearing, 5-joint, 6-drill pipe, 7-power head shell, 8-vibration isolator, 9-bearing end cover, 10 - handle, 11 - sealing ring. the

Detailed ways

The utility model is further described in conjunction with the accompanying drawings:

As shown in Figure 1, the utility model portable shallow surface sampler includes a vibrating body 1, a joint 5 is fixedly connected to the bottom of the vibrating body 1, the joint 5 adopts a variable wire joint, and a drill pipe 6 is connected to the joint 5 , the drill rod 6 adopts a lightweight drill rod (such as an aluminum alloy drill rod), and also includes a power head housing 7 and a drive motor 2, and an end face of the power head housing 7 has a hole, and the power head housing 7 end faces have holes greater than the outer diameter of the drive motor 2, the drive motor 2 is connected to the eccentric shaft 3 through the hole on the end face of the power head housing 7, and the two ends of the eccentric shaft 3 are supported by bearings 4 in the vibration In the body 1, the drive motor 2 and the vibrating body 1 are fixed together, the power head casing 7 is arranged outside the vibrating body 1, and the joint 5 or the drill pipe 6 is connected from the power head casing A hole on the lower surface of 7 passes through, and the vibrating body 1 is suspended and connected to the power head shell 7. Vibration isolators 8 can be arranged above and below the two ends of the power head shell, which can greatly eliminate The vibration generated when the eccentric shaft 3 rotates enables the operator to better grasp the sampler during sampling to ensure that the obtained samples are free of disturbance and have good fidelity; There is a certain gap between 7 to avoid friction between the rotation of the eccentric shaft 3 and the power head housing 7; Motor 2, each of the eccentric shafts 3 is driven by a driving motor 2, the angular velocity of the two driving motors 2 is the same, and the initial phase difference is 180°, so that the lateral vibrations generated by the two driving motors cancel each other out, and the eccentricity is seen from the end face The shaft 3 has a fan-shaped structure, and the connection between the eccentric shaft 3 and the drive motor 2 is a spline connection. The advantage of this connection is that it is not necessary to check whether the output end of the drive motor and the eccentric shaft are firmly connected when installing the drive motor. Together, the two ends of the eccentric shaft 3 support the vibrating body 1 through the deep groove ball bearing 4, and there is a shoulder on the eccentric shaft 3, so that the installation of the deep groove ball bearing 4 is very convenient, and the deep groove ball bearing 4 It can bear great radial pressure and axial pressure. The variable wire joint 5 is fixedly connected to the bottom of the vibrating body 1. The variable wire joint 5 is connected with a drill pipe 6. The drill pipe 6 is made of aluminum alloy. 6 and variable wire joint 5 are connected in bayonet type, which can adopt corresponding drill pipe 5 according to different environments, and drive motor 2 adopts AC asynchronous motor or DC motor, and the drive motor can be controlled by the vehicle-mounted power supply. 2 For power supply, the DC motor can be directly connected to the vehicle power supply, while the AC asynchronous motor needs to be connected to the vehicle power supply after adding an inverter. Compared with the current hydraulic drive method, it has superior mobility and portability. There is a hole on the lower surface of the head shell 7, and the diameter of the hole 7 is larger than the outer diameter of the variable wire joint 5. The vibration is not easy to grasp the sampler, the variable wire joint 5 passes through the hole and protrudes from the power head housing 7, and each eccentric shaft 3 There are bearing end caps 9 at both ends, and the bearing end caps 9 and the driving motor 2 are fixed on the vibrating body 1 by screws, so that the driving motor and the vibrating body are relatively stationary first, and the bearing end caps 9 A sealing ring 11 is arranged between the eccentric shaft 3. This structure can effectively prevent the eccentric shaft 3 from loosening, and can also have a certain effect of eliminating noise when the eccentric shaft 3 rotates at high speed. the

For the operator to use more conveniently, handles 10 are provided on the opposite sides of the power head housing 7, and the handles 10 can be fixed on the power head housing 7 by screw connection or welding. When in use, the operator only needs to hold the The handles 10 on both sides can be controlled and operated, which is very convenient to use. the

When sampling, the two driving motors 2 drive the two eccentric shafts 3 to rotate. Since the axes of the two eccentric shafts 3 are on the same horizontal plane, the lateral forces generated can cancel each other out, so that only downward periodic excitation is generated. Force, when the vibration overlaps with the natural resonance frequency of the drill pipe 6, resonance will occur, driving the drill pipe 6 and the annular drill bit at the front end of the drill pipe to continuously push into the rock and soil, and the high-frequency vibration will make the cutting edge of the drill bit The way of cutting, shearing, and fracture discharges the material on the drilling path, and causes the surrounding soil particles to liquefy, removes the soil particles from the side of the drill pipe 6, reduces the frictional resistance between the drilling tool and the hole wall, and greatly improves the The drilling speed is improved. While drilling, the coring barrel inside the drill pipe 6 follows up, the soil enters the coring barrel, and the drilling pipe 6 plays the role of protecting the hole wall. the

The utility model is not affected by the environment, the sampling device has a simple structure and good mobility, and the obtained samples have no disturbance, good fidelity and high sampling efficiency, and are especially suitable for environmental sampling with dense population, narrow space and shallow soil. Due to the improvement of the structure and the way of driving and power supply, the cost of sampling in the shallow layer of the ground surface is greatly reduced, and the sampling efficiency is greatly improved. the

Claims (10)

1. The portable surface shallow layer sampler comprises a vibrating body (1), a joint (5) is fixedly connected below the vibrating body (1), and a drill pipe (6) is connected to the joint (5), which is characterized in that , also includes power head shell (7) and drive motor (2), has a hole at an end face of described power head shell (7), and described power head shell (7) end face hole is larger than described drive motor (2) The outer diameter of the drive motor (2) is connected to the eccentric shaft (3) through the hole on the end face of the power head housing (7), and the two ends of the eccentric shaft (3) are supported by bearings (4) The vibrating body (1), the drive motor (2) and the vibrating body (1) are fixed together, the power head shell (7) is arranged outside the vibrating body (1), and the joint ( 5) or the drill rod (6) passes through a hole on the lower surface of the power head housing (7), and the vibrating body (1) is suspended and connected to the power head housing (7). 2. The portable surface shallow layer sampler according to claim 1, characterized in that, the joint (5) is a variable wire joint, the vibrating body (1) is a square, and the power head housing (7) A vibration isolator (8) is arranged between the vibration body (1). 3. The portable surface shallow layer sampler according to claim 2, characterized in that there are four vibration isolators (8), which are respectively arranged above and below the two ends of the power head housing (7). 4. The portable surface shallow layer sampler according to claim 1, characterized in that, there are two eccentric shafts (3), and the drive motor (2) and the end face of the power head housing (7) are opened. There are also two holes, and each of the eccentric shafts (3) is driven by a drive motor (2). The two drive motors (2) turn in opposite directions and at the same speed. 5. portable surface shallow layer sampler according to claim 4, is characterized in that, at the both ends of described eccentric shaft (3), bearing end cover (9) is all arranged, and described bearing end cover (9) and described The driving motor (2) is fixed on the vibrating body (1) by screws, and a sealing ring (11) is arranged between the bearing end cover (9) and the eccentric shaft (3). 6. according to claim 1-5 arbitrary described portable surface shallow layer sampler, it is characterized in that, handle (10) is provided on the relative both sides of described power head housing (7), and described handle (10) It is fixed on the power head shell (8) by means of screw connection or welding. 7. The portable surface shallow sampler according to claim 6, characterized in that, the joint (5) is hollow inside, and the joint (5) is connected to the drill pipe (6) by a bayonet type connection together. 8. The portable surface shallow sampler according to claim 6, characterized in that, the eccentric shaft (3) has a shoulder, and the bearing (4) is a deep groove ball bearing. 9. The portable surface shallow layer sampler according to claim 8, characterized in that, the eccentric shaft (3) is connected to the drive motor (2) by a spline, and the drive motor (2) is an AC Asynchronous motor or DC motor. 10. The portable surface shallow layer sampler according to claim 9, characterized in that the drill rod (6) is an aluminum alloy drill rod. the

Images