CN210370564U - Clamp spring for improving rock core sampling rate - Google Patents

Abstract

The utility model belongs to the technical field of the probing device that cores, a jump ring that improves rock core rate of taking is disclosed. The main technical characteristics are as follows: including the jump ring seat, the inner wall of jump ring seat includes upper portion ring inner wall, middle part thick down thin frustum form inner wall, lower part ring inner wall, and thick down thin frustum form inner wall department is provided with the jump ring that opens has vertical groove on the middle part, the outer wall of jump ring for with the middle part on thick down thin frustum form inner wall assorted thick down thin frustum form outer wall, the inner wall of jump ring is thick down frustum form inner wall, the outer wall of jump ring is provided with two or three on thick down thin fin, be provided with two or three and fin assorted window on the thick down thin frustum form inner wall on the middle part of jump ring seat. The utility model provides an improve jump ring of rock core rate of taking, the setting of fin for the ability of compression jump ring increases, makes the effect of jump ring centre gripping rock core stronger, thereby has improved the rate of taking of rock core, is applicable to thinner and more broken rock core and takes.

Description

Clamp spring for improving rock core sampling rate

Technical Field

The utility model belongs to the technical field of the probing device that cores, especially, relate to an improve jump ring that rock core took rate.

Background

A dual tube drilling tool in which the outer tube rotates and the inner tube does not rotate during drilling is called a single-action dual tube drilling tool. The outer tube of the single-acting double-tube drilling tool is connected with the coring drill bit, the inner tube is connected with the clamp spring seat, the inner wall of the clamp spring seat comprises an upper circular inner wall, a middle upper thick lower thin frustum-shaped inner wall and a lower circular inner wall, a clamp spring with a longitudinal groove is arranged at the middle upper thick lower thin frustum-shaped inner wall, the outer wall of the clamp spring is an upper thick lower thin frustum-shaped outer wall matched with the middle upper thick lower thin frustum-shaped inner wall, the inner wall of the clamp spring is an upper thin lower thick frustum-shaped inner wall, and a certain transverse expansion and contraction space is reserved between the clamp spring seat and the clamp spring. When the clamp spring is installed in the clamp spring seat, the clamp spring is inwards extruded to close a longitudinal groove of the clamp spring, the clamp spring is placed from the inner wall of the upper circular ring to reach the inner wall of the middle upper thick-lower thin frustum, the longitudinal groove of the clamp spring naturally extends, the outer wall of the middle upper thick-lower thin frustum of the clamp spring is in contact with the inner wall of the middle upper thick-lower thin frustum of the clamp spring, the outer diameter of the clamp spring is larger than the inner diameters of the inner wall of the upper circular ring and the inner wall of the lower circular ring, and the clamp spring can only move up and down at the inner wall of the middle upper thick-lower. When core drilling is carried out, the core enters the core tube, and when the core passes through the clamp spring from bottom to top, the core is not blocked upwards because the inner wall of the clamp spring is a frustum-shaped inner wall with a thin upper part and a thick lower part. After coring drilling is finished, the drilling tool is lifted, the core is clamped and lifted off in the clamp spring, the clamp spring is made to move downwards by utilizing the elastic clamping force of the clamp spring, the frictional resistance between the core and the clamp spring and the gravity of the core, the upper thick lower thin frustum-shaped outer wall of the clamp spring slides downwards along the middle upper thick lower thin frustum-shaped inner wall, the longitudinal groove of the clamp spring is gradually closed until the clamp spring stops sliding downwards, the core is firmly clamped by the clamp spring and exists above the clamp spring, and the clamp spring enables the core to move upwards and unidirectionally. The single-action double-tube drilling tool avoids the mechanical abrasion and breakage of the rock core caused by the friction vibration generated by the rotation of the drilling tool, so that the coring rate is improved. However, in a stratum with a single action failure or a hard and brittle fracture zone, the rock core sampling rate is very low, and the geological requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a jump ring that improves rock core rate of taking.

In order to solve the technical problem, the utility model discloses a technical scheme does: including the jump ring seat, the inner wall of jump ring seat includes upper portion ring inner wall, middle part thick down thin frustum form inner wall, lower part ring inner wall, and thick down thin frustum form inner wall department is provided with the jump ring that opens vertical groove on the middle part, the outer wall of jump ring for with the middle part thick down thin frustum form outer wall on thick down thin frustum form inner wall assorted, the inner wall of jump ring is thick down frustum form inner wall on the thin, the outer wall of jump ring is provided with two or three width down narrow fin on, be provided with two or three and fin assorted window on the thick down thin frustum form inner wall on the middle part of jump ring seat.

The utility model provides an improve jump ring of rock core rate of taking under the entering prerequisite that does not influence normal rock core, reduce original jump ring upper end diameter under natural state partly, the jump ring leaves effectual harmomegathus space in the jump ring seat, is provided with two or three upper and lower narrow fin at the outer wall of jump ring simultaneously, is provided with two or three and fin assorted window on thick thin frustum form inner wall down in the middle part of jump ring seat. After the clamp spring is additionally provided with the fins, the maximum outer diameter of the clamp spring and the fins is not larger than the outer diameter of the clamp spring seat when expanding, the single-action effect of the core drilling tool is not influenced, and the core is ensured to easily enter the core tube. When core drilling is carried out, the core enters the core tube, and when the core passes through the clamp spring from bottom to top, the clamp spring is in a frustum shape with a thin upper part and a thick lower part, so that the clamp spring is not blocked when the core rises upwards. After the core drilling is finished, the drilling tool is lifted up, the clamp spring moves downwards, the core is clamped in the clamp spring, and the core cannot fall off in the clamp spring. When the drill is lifted, the clamp spring is moved downwards by utilizing the elastic clamping force of the clamp spring, the frictional resistance of the rock core and the clamp spring and the gravity of the rock core, the upper thick and lower thin frustum-shaped outer wall of the clamp spring slides downwards along the upper thick and lower thin frustum-shaped inner wall of the middle part of the clamp spring seat, the longitudinal groove of the clamp spring is gradually closed, then the fin slides downwards at the window, the longitudinal groove of the clamp spring is continuously closed, the clamping capacity of the clamp spring on the rock core is increased, the rock core is firmly clamped in the clamp spring, and the rock core is clamped in the clamp. The arrangement of the fins increases the capacity of compressing the clamp spring, so that the clamp spring has stronger capacity of clamping the rock core, thereby improving the rock core taking rate and being suitable for taking the rock core which is thinner and broken in abrasion.

Drawings

Fig. 1 is a schematic structural view of a clamp spring for improving the rock core sampling rate of the utility model;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a cross-sectional view of the circlip base without a window;

FIG. 4 is a cross-sectional view of the circlip seat with a window;

fig. 5 is a schematic structural diagram of the snap spring.

Detailed Description

The specific structure of the jump ring for improving the rock core sampling rate of the utility model is described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model provides a jump ring that high rock core rate of taking includes jump ring seat 1, and the jump ring seat is provided with window 2, and fin 3 of jump ring is located window 2 departments.

As shown in fig. 3, the inner wall of the snap spring seat 1 includes an upper circular inner wall 11, a middle upper thick lower thin frustum-shaped inner wall 12, and a lower circular inner wall 13, the snap spring 4 is disposed at the middle upper thick lower thin frustum-shaped inner wall 12, the outer wall of the snap spring 4 is an upper thick lower thin frustum-shaped outer wall 41 matched with the middle upper thick lower thin frustum-shaped inner wall 12, and the inner wall of the snap spring 4 is an upper thin lower thick frustum-shaped inner wall 42.

As shown in fig. 4, the inner wall of the clamp spring seat 1 includes an upper circular inner wall 11, a middle upper thick lower thin frustum-shaped inner wall 12, and a lower circular inner wall 13, the clamp spring 4 is arranged at the middle upper thick lower thin frustum-shaped inner wall 12, the outer wall of the clamp spring 4 is an upper thick lower thin frustum-shaped outer wall 41 matched with the middle upper thick lower thin frustum-shaped inner wall 12, the inner wall of the clamp spring 4 is an upper thin lower thick frustum-shaped inner wall 42, the outer wall of the clamp spring 4 is provided with a fin 3 with a wide upper part and a narrow lower part, and the middle upper thick lower thin frustum-shaped inner wall 12 of the clamp spring seat 1 is provided with a window 2 matched with the fin 3.

As shown in fig. 5, the outer wall of the snap spring 4 is an upper thick and lower thin frustum-shaped outer wall 41, the inner wall of the snap spring 4 is an upper thin and lower thick frustum-shaped inner wall 42, the snap spring 4 is provided with a longitudinal groove 43, and the outer wall of the snap spring 4 is provided with a fin 3 which is wide at the top and narrow at the bottom.

The utility model provides an improve jump ring of rock core rate of taking under the entering prerequisite that does not influence normal rock core, reduce partly original 4 upper end diameters of jump ring under natural state, jump ring 4 reserves effectual harmomegathus space in jump ring seat 1, is provided with two or three thick fin 3 down at the outer wall of jump ring 4 simultaneously, is provided with two or three and fin 3 assorted window 2 on thick down thin frustum form inner wall 12 on the middle part of jump ring seat 1. After the fin 3 is additionally arranged on the clamp spring 4, the maximum outer diameter of the clamp spring 4 and the fin 3 is not larger than the outer diameter of the clamp spring seat 1 when expanding, the single-action effect of the core drilling tool is not influenced, and the core is ensured to easily enter the core tube. When core drilling is carried out, the core enters the core tube, and when the core passes through the clamp spring 4 from bottom to top, the inner wall of the clamp spring 4 is the inner wall 42 in the shape of a frustum with a thin upper part and a thick lower part, so that the core is not hindered from expanding upwards by the clamp spring 4. After the core drilling is finished, the drilling tool is lifted, the clamp spring 4 moves downwards, the core is clamped in the clamp spring 4, and the core cannot fall off in the clamp spring 4. When the drill is lifted, the clamp spring 4 moves downwards by using the elastic clamping force of the clamp spring 4, the frictional resistance between the core and the clamp spring 4 and the gravity of the core, the upper thick lower thin frustum-shaped outer wall 41 of the clamp spring 4 slides downwards along the upper thick lower thin frustum-shaped inner wall 12 of the middle part of the clamp spring seat 1, the longitudinal groove 43 of the clamp spring 4 is gradually closed, then the fin 3 slides downwards at the window 2, the longitudinal groove 43 of the clamp spring 4 is continuously closed, the clamping capacity of the clamp spring 4 on the core is increased, the core is firmly clamped in the clamp spring 4, and the core is clamped in the clamp spring 4. The arrangement of the fins 3 increases the capacity of compressing the clamp spring 4, so that the capacity of clamping the rock core by the clamp spring 4 is stronger, the rock core taking rate is improved, and the rock core taking device is suitable for taking the rock core which is worn and broken.

The utility model provides an improve jump ring that rock core took rate is not only limited to above-mentioned embodiment, nevertheless is in no matter what kind of form, the all the utility model discloses any modification, equivalent replacement and improvement etc. of doing on the basis all should contain within the protection scope of the utility model.

Claims (1)

1. Improve jump ring of rock core rate of taking, including the jump ring seat, the inner wall of jump ring seat includes upper portion ring inner wall, thick thin frustum form inner wall down in the middle part, lower part ring inner wall, thick thin frustum form inner wall department is provided with the jump ring of opening there is vertical groove on the middle part, the outer wall of jump ring be with the middle part on thick thin frustum form inner wall assorted thick thin frustum form outer wall down, the inner wall of jump ring is thick frustum form inner wall down for last thin, its characterized in that: the outer wall of the clamp spring is provided with two or three fins which are wide at the top and narrow at the bottom, and the inner wall of the clamp spring seat which is thick at the top and thin at the bottom is provided with two or three windows matched with the fins.

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