CN209741813U - Collapsible loess embedded cutting ring soil sampler - Google Patents

Abstract

The utility model discloses an embedded cutting ring geotome of collapsible loess, be the open-ended cylinder body including one end, there are piston and piston rod, its characterized in that in the cylinder body: the cutting device is characterized in that a plurality of cylindrical cutting rings are arranged between the opening ends of the piston and the cylinder body, the cutting rings are adjacent to each other at certain intervals along the axial direction of the cylinder body, a cutting ring fixing frame is further arranged between the cutting rings and the inner wall of the cylinder body, and the cutting ring fixing frame is detachably and fixedly connected with the cutting rings and the cylinder body respectively. And after the soil sample is filled in the cavity at the lower part of the piston, the soil sampler is moved out, the anchor bolt is detached, the piston rod is pushed to integrally push out the annular cutter fixing frame and the annular cutters, then the annular cutter fixing frame is opened, the soil sample in each annular cutter is cut off from the interval between the annular cutters by using the soil dressing cutter, and the soil sample in each annular cutter is flattened to obtain a plurality of soil samples to be detected. Therefore, a plurality of soil samples can be prepared and detected simultaneously, and the detection efficiency is improved.

Description

Collapsible Loess Embedded Ring Knife Earth Collector

technical field

The utility model relates to a soil fetcher, in particular to a collapsible loess embedded ring knife soil fetcher.

Background technique

Loess foundations are widely distributed in my country, and self-weight collapsible loess sites are mainly distributed in Longxi, Longdong, Northern Shaanxi, Shanxi, and Ningxia. The collapsible loess is constructed by compaction pile method to eliminate the collapsibility of loess. In-situ drilling for static pressure, large-diameter rotary drills should be used for drilling and sampling, and special thin-walled soil fetchers should be used to take undisturbed soil samples. It is necessary to maintain their natural water content, density and structure. The soil samples taken should be sealed and avoided. Rain, evaporation, vibration. JTG/T D31-05-2017 "Technical Specifications for Design and Construction of Highway Subgrade in Loess Areas" requires that for the compaction quality of the packing in the compacted pile hole, the sampling frequency is 2% of the total number of holes, and each shift should not be less In hole 1, from 0.5m down from the top of the pile, it is advisable to take 2 soil samples every 1m to measure the dry density. The detection work cannot keep up with the accuracy of soil extraction, thus affecting the construction of the next process.

Utility model content

The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and to provide a built-in ring-knife soil fetcher which can simultaneously produce multiple soil samples for testing for collapsible loess.

In order to achieve the above purpose, the utility model provides a collapsible loess embedded ring knife soil fetcher, which includes a cylinder with an opening at one end, and a piston and a piston connecting rod are built in the cylinder, and the feature is that the piston A plurality of cylindrical ring knives are arranged between the open end of the cylinder body, and the adjacent ring knives are spaced at a certain distance along the axial direction of the cylinder body, and a ring knife is also arranged between the ring knives and the inner wall of the cylinder body A fixed frame, the ring knife fixed frame is detachably fixedly connected with the ring knife and the cylinder body respectively.

Further, a connecting head is fixed at one end of the cylinder, and a limiting plate fixed on the cylinder is provided between the connecting head and the piston, and a pressure relief hole is provided on the limiting plate.

Further, the ring knife fixing frame includes two semicircular arc plates, and the two semicircular arc plates are hinged to the connecting shaft through a hinge.

Further, the ring knife fixing frame is fixedly connected with the cylinder body through anchor bolts.

Further, a limit block is provided on the inner wall of the ring knife fixing frame, and the ring knife is limited and fixed by the limit block and the ring knife fixing frame.

The beneficial effect of the utility model is that multiple soil samples are prepared at the same time, and the detection efficiency is improved. The utility model fixes a plurality of ring knives on the inner wall of the cylinder through the ring knife fixing frame, and the plurality of ring knives are spaced at a certain distance in the axial direction. When the soil sample is filled with the cavity in the ring knife, the soil fetcher is removed and the anchor bolt is removed. , push down the piston rod to push out the ring knife fixing frame and the ring knife as a whole, then open the ring knife fixing frame, cut off the space between the ring knives with the soil trimming knife and smooth the soil sample in each ring knife, Prepare multiple soil samples to be tested. In this way, a plurality of soil samples can be prepared and detected at the same time, which improves the detection efficiency.

Description of drawings

Fig. 1 is the front view of the structure of the embedded ring cutter soil fetcher.

Fig. 2 is a view from direction A in Fig. 1 .

The labels of the components in the figure are as follows: cylinder body 1, connecting head 2, piston connecting rod 3, limit plate 4, pressure relief hole 401, piston 5, ring knife 6, ring knife fixing frame 7, semicircular arc plate 701, limit plate Position card block 702, connecting shaft 8, hinge 801, anchor bolt 9.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings to facilitate a clearer understanding of the utility model, but they do not limit the utility model.

As shown in Figures 1 and 2, a collapsible loess embedded ring knife soil fetcher includes a cylinder 1 with an opening at one end, a connector 2 is fixed at one end of the cylinder 1, and a piston 5 and a piston are built in the cylinder 1. The connecting rod 3 and the piston connecting rod pass through the connecting head and are fixedly connected with the drill pipe of the core drilling machine. A limiting plate 4 fixed on the cylinder body 1 is arranged between the connecting head 2 and the piston 5. Pressure relief hole 401; a plurality of cylindrical ring knives 6 are arranged between the piston 5 and the open end of the cylinder body 1, the blades of the ring knives face downward, and the adjacent ring knives 6 are separated by a certain distance along the axial direction of the cylinder body 1 , between the ring knife 6 and the inner wall of the cylinder body 1, there is also a ring knife holder 7, and the ring knife holder 7 and the cylinder body 1 and the ring knife 6 are fixed. The ring knife holder 7 includes two semicircle arc plates 701, two The semi-circular arc plate 701 is hinged with the connecting shaft 8 through the hinge 801, the ring knife fixed frame 7 is fixedly connected with the cylinder body 1 by the anchor bolt 9, the ring knife fixed frame 7 inner wall is provided with a limit block 702, and the ring knife 6 passes through the limit The position clamping block 702 is limited and fixed with the ring knife holder 7 .

The working process of the collapsible loess embedded ring knife soil fetcher described in the utility model is as follows: the opening of the installed soil fetcher is extended into the pile hole, the core drilling machine drives the piston connecting rod to move upward, and the lower part of the piston is The cavity is evacuated, the compressed air in the upper cavity of the piston flows out from the pressure relief hole, and the loose collapsible loess enters the cavity in the cylinder under the action of negative pressure, filling the entire lower cavity of the piston and compressing it. into a cylinder. Then take out the earth taker, release the connection between the piston connecting rod and the drill pipe, then remove the anchor bolt between the ring cutter fixing frame and the cylinder body, push the piston rod down to push the ring cutter fixing frame and ring cutter out as a whole, and then open the ring cutter The knife fixing frame is used to cut off the space between the ring knives with a soil trimming knife and trim the soil samples in each ring knife to make a plurality of soil samples to be tested. In this way, a plurality of soil samples can be prepared at the same time and the compactness of the plurality of soil samples can be detected at the same time, which avoids that the detection speed cannot keep up with the sampling speed when only one soil sample can be prepared at a time, and improves the detection efficiency.

Claims (5)

1. A kind of collapsible loess embedded type ring cutter soil fetcher, comprising one end is the cylinder body (1) of opening, described cylinder body (1) is built-in with piston (5) and piston connecting rod (3), its feature In that: between the piston (5) and the open end of the cylinder (1), a plurality of cylindrical ring knives (6) are arranged, adjacent to the ring knives (6) along the axis of the cylinder (1) To a certain distance, a ring cutter holder (7) is also provided between the ring cutter (6) and the inner wall of the cylinder body (1), and the ring cutter holder (7) is connected to the ring cutter (6) and the cylinder body. (1) Respectively detachable fixed connections. 2. The collapsible loess embedded ring cutter soil fetcher according to claim 1, characterized in that: one end of the cylinder body (1) is fixed with a connector (2), and the connector (2) is connected to the piston A limiting plate (4) fixed on the cylinder body (1) is arranged between (5), and a pressure relief hole (401) is arranged on the limiting plate (4). 3. The collapsible loess embedded ring knife soil fetcher according to claim 1, characterized in that: the ring knife fixing frame (7) comprises two semicircular arc plates (701), and the two semicircular arc plates (701) The arc plate (701) is hinged to the connecting shaft (8) through a hinge (801). 4. The collapsible loess built-in ring knife soil fetcher according to claim 3, characterized in that: the ring knife fixing frame (7) is fixedly connected to the cylinder body (1) through anchor bolts (9). 5. The collapsible loess embedded ring knife soil fetcher according to claim 3, characterized in that: the inner wall of the ring knife holder (7) is provided with a limit block (702), and the ring knife ( 6) Limit and fix through the limit block (702) and the ring knife holder (7).