CN211113573U - Sampling soil breaking and pore forming device - Google Patents

Abstract

The utility model discloses a sampling, soil breaking and pore forming device, which comprises a hydraulic power device, a hydraulic telescopic rod, a protective cylinder, a cutting ring, a soil breaking cone and a pore forming cylinder; the hydraulic telescopic rod is connected with a hydraulic power device and penetrates into the protective cylinder from the top of the protective cylinder; an internal threaded hole is formed in the output end of the hydraulic telescopic rod; the output end of the hydraulic telescopic rod is connected with a cutting ring, a soil breaking cone or a hole forming cylinder; the top of the cutting ring is provided with a connecting plate, and the cutting ring is connected with the output end of the hydraulic telescopic rod through the connecting plate; the soil breaking cone and the hole forming cylinder are connected with the lower end of the hydraulic telescopic rod through threaded connecting rods; a circular ring is arranged on the outer side of the protective cylinder; the device integrates three functions, the lifting of the hydraulic telescopic rod is controlled by a hydraulic power device, and a cutting ring, a soil breaking cone or a hole forming cylinder can be detachably connected at the lower end of the device respectively; the circular ring outside the pile casing can be used as the reference for judging whether the pile casing is vertically inserted into the soil body, so that the deviation is avoided, and the hydraulic pressure is used as power to effectively improve the sampling, soil breaking and hole forming efficiency.

Description

A kind of sampling earth-breaking hole-forming device

technical field

The utility model belongs to the field of geotechnical model test devices, in particular to a soil-breaking and hole-forming device for sampling.

Background technique

The geotechnical centrifugal model test is to use the centrifugal force provided by the centrifuge to simulate the gravity. According to the similar principle, the geometric shape of the prototype is scaled down, and the soil with the same physical properties is used to make a model, so that the stress state in the centrifugal force field is the same as that of the prototype. Consistency in the gravitational field is a test technology to study engineering properties, which is a means to solve practical engineering problems and theoretical research. The geotechnical model test is used to simulate the stress, deformation and failure of the prototype geotechnical structure, verify the design scheme, conduct material parameter research, verify the mathematical model and numerical analysis calculation results, and is widely used in the field of geotechnical engineering.

The process of the model test includes the packing and dismantling of the soil, the determination of some physical properties of the soil, and the drilling and embedding of experimental equipment in the soil layer. In the experiment, the simple test for measuring the shear strength of soil is the direct shear test. Generally, samples are taken directly in the soil layer of the model box after the model test is completed, and the ring knife is driven into the soil layer with a compaction hammer for sampling. During some model tests, tests related to piles will be carried out. For example, a project needs to widen the road surface, and the subgrade uses pile foundations. It is necessary to study the influence of new piles on old piles. During the experiment, it is necessary to drive a pile for the experiment, which is an old pile. The soil compaction degree after the experiment is very high, and the new piles need to be drilled. At this time, it is difficult to drill holes by manpower, which is easy to be skewed and the accuracy is not high. In addition, after the test, we usually have to unpack the box, take out the soil from the model box, and then carry out follow-up work, leaving it for the next test. Generally, the soil is broken by manpower, and the soil is slowly cleaned up. Time-consuming and labor-intensive, and inefficient.

Utility model content

In order to solve the problems existing in the prior art, the utility model discloses a soil-breaking and hole-forming device for sampling, which can realize soil-breaking, sampling and hole-forming by replacing parts, which is convenient to use and has high hole-forming quality.

The complicated and repetitive work of sampling, breaking ground and hole forming is completed with a new type of device that integrates three functions.

In order to achieve the above purpose, the technical scheme adopted by the present invention is a sampling earth-breaking hole-forming device, including a hydraulic power device, a hydraulic telescopic rod, a protective tube, a ring knife, a soil-breaking cone and a hole-forming cylinder; The input end is connected to the output end of the hydraulic power unit, and the hydraulic telescopic rod penetrates into the casing and is connected to the top of the casing; the output end of the hydraulic telescopic rod is provided with an internal threaded hole; the output end of the hydraulic telescopic rod is connected to a ring cutter, a ground breaking cone or hole cylinder; the top of the ring knife is provided with a connecting plate, and the ring knife is connected with the output end of the hydraulic telescopic rod through the connecting plate; the ground breaking cone and the hole forming cylinder are connected with the lower end of the hydraulic telescopic rod through the threaded connecting rod; the outer side of the protective cylinder is provided with a Ring, the ring is perpendicular to the axis of the casing.

The bottom surface of the connecting plate is provided with several clamping bolts along the circumferential direction, the nuts of the clamping bolts are fixedly connected with the bottom surface of the connecting plate, and the ring cutter is arranged in the middle of the clamping bolts.

The center of the connecting plate is provided with a connecting hole, and the connecting bolt passes through the connecting hole and the inner thread hole of the output end of the hydraulic telescopic rod.

The center of the connecting plate is provided with a threaded connection hole, and a double-ended screw is arranged between the threaded connection hole and the inner threaded hole of the output end of the hydraulic telescopic rod.

The earth-breaking cone includes several iron cones arranged in parallel, the top of the iron cone is provided with a connecting rod or a connecting plate, one end of the connecting rod is connected with the top of the iron cone, the other end is connected with a threaded connecting rod, and the bottom surface of the connecting plate is connected. It is connected with the top end of the iron cone, the top surface of the connecting plate is provided with a threaded connecting rod, the top of the threaded connecting rod is provided with an external thread, and the threaded connecting rod is connected with the internal threaded hole of the output end of the hydraulic telescopic rod.

The bottom end of the protective tube is provided with a protective tube blade foot.

The lower end of the hole-forming cylinder is provided with a blade foot.

Two levels are set on the upper surface of the ring, and an included angle is set between the two levels.

Compared with the prior art, the present utility model at least has the following beneficial effects:

The sampling soil-breaking and hole-forming device provided by the utility model integrates three functions. The lifting and lowering of the hydraulic telescopic rod is controlled by the hydraulic power device. The ring knife is pressed into the soil. After the soil sampling is completed, the ring knife and the soil sample are taken out together; the ring knife is more convenient for sampling, the damage to the sample to be tested is less, and the disturbance to the original soil is small, and can be obtained from any position in the model box. Soil sample; the soil-breaking cone is inserted into the soil layer by hydraulic power through the hydraulic telescopic rod, so that the soil layer is cracked; a ring is set on the outer side of the protective tube, which helps to maintain the vertical when the downward pressure is applied, and the hole-forming cylinder is pressed into the soil body. When pulling out the hole-forming cylinder, the soil in the cylinder is pulled out together with the hole-forming cylinder to obtain the required pile hole, which has little influence on the surrounding soil, the hole wall is flat, and the hole is not inclined, so it is convenient to put the pile body in; As a power, it can effectively improve the efficiency of sampling, ground breaking and hole forming.

Further, the ring cutter is fixed on the steel plate at the lower end of the connecting rod through several clamping bolts, and at the same time the connecting rod is connected with the lower end of the hydraulic press, so that ring knives of different diameters can be replaced.

Further, the use of hole-forming cylinders of different sizes can form pile holes according to different requirements,

Further, the lower end of the hole-forming cylinder is provided with a blade foot, which is convenient for piercing into the soil.

Description of drawings

Figure 1 is an overall schematic diagram of the ring knife sampling device.

FIG. 2 is a schematic cross-sectional view of the A-A plane in FIG. 1 .

FIG. 3 is a schematic cross-sectional view of the B-B plane in FIG. 1 .

Figure 4 is an overall schematic diagram of the ground breaking device.

Figure 5 is an enlarged view of the ground breaking cone.

FIG. 6 is a schematic cross-sectional view of the C-C plane in FIG. 4 .

FIG. 7 is a schematic diagram of a hole-forming device.

FIG. 8 is a schematic diagram of a hole-forming cylinder with various apertures.

FIG. 9 is a cross-sectional view of the D-D plane in FIG. 7 .

In the drawings, 1-hydraulic device, 2-connecting rod, 3-clamping bolt, 4-ring knife, 5-tube guard blade foot, 6-tube guard, 7-earth-breaking cone, 8-hole-forming tube.

Detailed ways

The present utility model will be described in detail below with reference to specific embodiments and accompanying drawings.

As shown in Figures 1 to 3, a sampling soil-breaking hole-forming device includes a hydraulic power device 1, a hydraulic telescopic rod, a protective tube 6, a ring knife 4, a soil-breaking cone 7 and a hole-forming cylinder 8; wherein, the input end of the hydraulic telescopic rod Connect the output end of the hydraulic power unit 1, the hydraulic telescopic rod penetrates into the casing 6 and is connected to the top of the casing 6; the output end of the hydraulic telescopic rod is provided with an internal thread hole; the output end of the hydraulic telescopic rod is connected to the ring cutter 4, the earth breaking cone 7 or hole-forming cylinder 8; the top of the ring cutter 4 is provided with a connecting plate, and the ring cutter 4 is connected with the output end of the hydraulic telescopic rod through the connecting plate; the earth-breaking cone 7 and the hole-forming cylinder 8 are both connected through the threaded connection rod and the output of the hydraulic telescopic rod The bottom surface of the connecting plate is provided with several clamping bolts 3 along the circumferential direction, the nuts of the clamping bolts 3 are fixedly connected with the bottom surface of the connecting plate, and the ring knife 4 is arranged in the middle of the clamping bolts 3;

As shown in FIGS. 5 and 6 , the earth-breaking cone 7 includes several iron cones arranged in parallel. The top of the iron cone is provided with a connecting rod or a connecting plate. One end of the connecting rod is connected to the top of the iron cone, and the other end is connected to the top of the iron cone. Both are connected with threaded connecting rods, the bottom surface of the connecting plate is connected with the top end of the iron cone, the top surface of the connecting plate is provided with a threaded connecting rod, the top of the threaded connecting rod is provided with an external thread, and the threaded connecting rod is connected with the internal threaded hole of the output end of the hydraulic telescopic rod. connect.

As an optional embodiment, a connecting hole is formed in the center of the connecting plate, and the connecting bolt passes through the connecting hole and the internal thread hole of the output end of the hydraulic telescopic rod.

The center of the connecting plate is provided with a threaded connection hole, and a double-ended screw is arranged between the threaded connection hole and the inner threaded hole of the output end of the hydraulic telescopic rod.

As shown in FIG. 1 and FIG. 4 , the bottom end of the protective tube 6 is provided with a protective tube blade 5 .

The diameters of the hole-forming cylinders 8 are respectively 30 mm, 60 mm and 90 mm.

As shown in Figures 7 and 8, the top of the hole-forming cylinder 8 is provided with a threaded connecting rod, which is connected to the output end of the hydraulic telescopic rod through the threaded connecting rod; the lower end of the hole-forming cylinder 8 is provided with a blade foot.

The specific usage is as follows:

Ring knife sampling device: connect a steel plate at the lower end of the hydraulic device 1 through the connecting rod 2, and set four clamping bolts 3 around the steel plate, put the ring knife 4 into the gap of the four clamping bolts 3, and then adjust Clamp the bolt 3 to fix the ring knife 4 firmly. The clamping bolt 3 can also meet the ring knife 4 of different sizes and diameters, so that soil samples of different sizes can be obtained. The hydraulic power unit 1 is used to provide power, and the ring cutter 4 slowly enters the soil under the action of the hydraulic power unit 1 along with the clamping bolt 3. After reaching the required depth, the soil sample fills the entire ring cutter 4, and then the ring cutter 4 The hydraulic power unit 1 provides power to ascend again, and the soil sample to be tested is completely taken out, and then other geotechnical tests such as direct shearing are performed; the entire ring knife sampling device can be disassembled from the hydraulic unit 1 to replace other devices. The lower part of the barrel 6 is provided with a protective barrel blade 5, which is used to insert the whole device into the soil to stabilize the device.

Earth-breaking device: a soil-breaking cone 7 is connected to the lower end of the hydraulic power device 1. The soil-breaking cone 7 includes four iron cones with sharp thorns. Then the hydraulic power device is controlled to insert the soil-breaking cone 7 into the soil layer. Due to the action of the soil-breaking cone 7, the soil layer is cracked, and then the soil-breaking cone 7 leaves the soil body, and the above-mentioned soil-breaking process is repeated at other positions of the soil body. After the crushing is completed, the follow-up test is carried out, which saves time and effort and has high efficiency.

Hole-forming device: a hole-forming cylinder 8 is connected to the lower end of the hydraulic power device 1, and the hole-forming cylinder 8 is detachably connected to the hydraulic power device 1. There are hole-forming cylinders 8 with different diameters, which can be selected according to the experimental requirements, and the hole-forming cylinder 8 is formed at the same time. The lower end of the cylinder 8 is provided with a blade foot, which is convenient for piercing into the soil. The hydraulic power device 1 is used to provide power, and the hole-forming cylinder 8 is pressed into the soil. After the hole-forming cylinder 8 reaches the set depth, the hydraulic power device 1 provides power again. The hole-forming cylinder 8 is pulled out of the soil body, and the soil body in the hole-forming cylinder 8 is pulled out together with the hole-forming cylinder 8, so that the required pile holes are obtained. Small, the hole wall is flat, the hole is not inclined, and it is convenient to put the pile body in.

Claims (8)

1. A soil-breaking and hole-forming device for sampling, characterized in that it comprises a hydraulic power device (1), a hydraulic telescopic rod, a protective cylinder (6), a ring knife (4), a soil-breaking cone (7) and a hole-forming cylinder (8) wherein, the input end of the hydraulic telescopic rod is connected to the output end of the hydraulic power device (1), the hydraulic telescopic rod penetrates into the casing (6), and is connected with the top of the casing (6); the output end of the hydraulic telescopic rod is provided with an internal thread The output end of the hydraulic telescopic rod is connected to the ring knife (4), the earth breaking cone (7) or the hole forming cylinder (8); The output end of the rod is connected; the earth-breaking cone (7) and the hole-forming cylinder (8) are connected with the lower end of the hydraulic telescopic rod through a threaded connecting rod; the outer side of the protective cylinder (6) is provided with a circular ring, and the circular ring is perpendicular to the protective cylinder ( 6) axis. 2. The device according to claim 1, wherein the bottom surface of the connecting plate is provided with several clamping bolts (3) along the circumferential direction, and the nuts of the clamping bolts (3) are fixed to the bottom surface of the connecting plate. To connect, the ring knife (4) is arranged in the middle of the clamping bolt (3). 3 . The device according to claim 1 , wherein a connecting hole is formed in the center of the connecting plate, and the connecting bolt passes through the connecting hole and the inner threaded hole of the output end of the hydraulic telescopic rod. 4 . 4 . The device according to claim 1 , wherein a threaded connection hole is provided in the center of the connecting plate, and a double-ended screw is arranged between the threaded connection hole and the inner threaded hole of the output end of the hydraulic telescopic rod. 5 . 5. The soil-breaking and hole-forming device for sampling according to claim 1, wherein the soil-breaking cone (7) comprises several iron cones arranged in parallel, and the top of the iron cone is provided with a connecting rod or a connecting plate, and the connecting rod One end of the piece is connected with the top end of the iron cone, the other end is connected with a threaded connecting rod, the bottom surface of the connecting plate is connected with the top end of the iron cone, the top surface of the connecting plate is provided with a threaded connecting rod, and the top of the threaded connecting rod is provided with an external thread, The threaded connecting rod is connected with the inner threaded hole of the output end of the hydraulic telescopic rod. 6. The device according to claim 1, characterized in that, the bottom end of the protective tube (6) is provided with a protective tube edge (5). 7. The soil-breaking and hole-forming device for sampling according to claim 1, characterized in that the lower end of the hole-forming cylinder (8) is provided with a blade foot. 8 . The device according to claim 1 , wherein two levels are arranged on the upper surface of the ring, and an included angle is arranged between the two levels. 9 .

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