Coal mine geological drilling sampling device

Abstract

The utility model discloses a coal mine geological drilling sampling device, which belongs to the technical field of drilling sampling and comprises a main machine table. An ejector rod capable of moving up and down is vertically installed on the main machine table, a rod body of the ejector rod is sleeved with a reset spring for pushing the ejector rod to move upwards, a vertically-arranged sampling core is detachably installed at the bottom of the ejector rod, and a hollow cavity is formed in the sampling core; a groove with the same length as the sampling core is formed in the side wall of the sampling core in the axial direction; a labor-saving lever capable of pressing the ejector rod downwards and driving the sampling core to drill downwards is rotationally mounted at the top of the main machine table. According to the coal mine geological drilling sampling device, the groove is formed in the side wall of the sampling core, so that a sample in the hollow cavity of the sampling core is easily separated from the cavity; and secondly, the ejector rod is frequently knocked by the labor-saving lever, and the vibration sense can be transmitted into the sampling core along the ejector rod, so that the sample in the hollow cavity of the sampling core is quickly separated from the cavity.

Description

Technical Field

[0001] This utility model relates to the field of drilling and sampling technology, specifically a coal mine geological drilling and sampling device. Background Technology

[0002] In coal mine geological exploration, drilling and sampling of underground rock and soil layers is an important task. Analyzing the obtained samples can provide information about the underground geological structure and mineral distribution. However, existing coal mine geological drilling and sampling equipment has some problems during the sampling process. For example, the sample in the core is not easy to remove from the cavity, resulting in low sampling efficiency. Furthermore, the operation is not convenient and requires a lot of manpower and time. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a coal mine geological drilling sampling device that allows for easy and fast sample extraction from the cavity.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A coal mine geological drilling and sampling device includes a main platform; the main platform is vertically mounted with a top rod that can move up and down, and a return spring is fitted on the rod to push it upward; a vertically arranged sampling core is detachably installed at the bottom of the top rod, the sampling core has a hollow cavity inside, and a groove of equal length is formed along the axial direction on the side wall of the sampling core; a force-saving lever is rotatably mounted on the top of the main platform, which can press down the top rod and drive the sampling core to drill downward.

[0006] By adopting the above scheme, the coal mine geological drilling sampling device makes it easy for the sample in the cavity of the sampling core to be released from the cavity by opening grooves on the side wall of the sampling core; secondly, by frequently striking the top rod with the labor-saving lever, the vibration is transmitted to the sampling core along the top rod, thereby making the sample in the cavity of the sampling core quickly release from the cavity.

[0007] Furthermore, the width of the groove is 1 / 3 to 1 / 2 of the diameter of the hollow cavity. This design ensures the structural strength of the sampling core while making it easier for the sample to be extracted from the sampling core.

[0008] Furthermore, the lower end of the sampling core is a pointed tip. The pointed tip design facilitates easier drilling of the sampling core into underground rock and soil layers, improving drilling efficiency.

[0009] Furthermore, the top end of the return spring abuts against the pin passing through the top rod, and the bottom end of the return spring abuts against the slot in the main unit. This structure ensures that the return spring can stably push the top rod upward, allowing the sampling core to be smoothly extracted from the underground soil and rock layer.

[0010] Furthermore, the top of the sampling core is inserted into the interior of the top rod and is completely fixed by screws installed on the side wall of the sampling core. This detachable installation method facilitates the replacement and maintenance of the sampling core. When the sampling core is worn or damaged, a new sampling core can be quickly replaced, thus improving the service life of the device.

[0011] Furthermore, a limiting stud is threaded onto the main unit and is vertically positioned away from the rotating end of the lever. The nut of the limiting stud can prevent the lever from rotating downwards. The limiting stud can prevent the lever from being excessively pressed down, avoiding damage to the device. At the same time, it can also adjust the downward stroke of the lever as needed, improving the flexibility and adaptability of the device.

[0012] Furthermore, a foot pedal is installed at the bottom of the main unit, and the upper surface of the foot pedal has multiple linearly distributed anti-slip grooves. The foot pedal is designed to facilitate the operator's stepping on the main unit and stabilizing device, while the anti-slip grooves increase friction to prevent the operator from slipping and improve operational safety.

[0013] Furthermore, the bottom of the main unit is provided with guide holes corresponding vertically to the sampling core position, and the diameter of the guide holes is 1.1-1.2 times the diameter of the sampling core. The guide holes can guide the drilling direction of the sampling core, keeping it drilled vertically downwards and improving the accuracy of sampling.

[0014] Furthermore, a sampling stage is installed on the upper surface where the guide hole is located, and a sampling box that can be pulled outward is slidably installed on the sampling stage. The sampling box can conveniently collect the sample that has been removed from the sampling core, facilitating subsequent analysis and research.

[0015] Furthermore, a pull handle is fixed to the outside of the sampling box. The pull handle makes it easier for the operator to pull out the sampling box, making the sampling process more convenient.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: Firstly, by creating grooves on the sidewall of the sampling core, the sample inside the hollow cavity of the sampling core can be easily detached. Secondly, by frequently striking the top rod with a force-saving lever, the vibration is transmitted along the top rod to the sampling core, thereby quickly detaching the sample inside the hollow cavity of the sampling core. Furthermore, this invention also has the advantages of simple structure, convenient operation, high sampling efficiency, and long service life, effectively improving the efficiency and quality of sampling in coal mine geological drilling. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 The three-dimensional structure of a coal mine geological drilling and sampling device during drilling. Figure 1 ;

[0019] Figure 2 The three-dimensional structure of a coal mine geological drilling and sampling device during drilling. Figure 2 ;

[0020] Figure 3 The three-dimensional structure of a coal mine geological drilling and sampling device during drilling. Figure 3 ;

[0021] Figure 4 A three-dimensional structural diagram of a coal mine geological drilling and sampling device during sampling.

[0022] Figure 5 for Figure 3 A magnified view of a section at point A in the middle;

[0023] Figure 6 for Figure 2 A magnified view of a section at point B in the middle;

[0024] Figure 7 for Figure 1 A magnified view of a section at point C;

[0025] The markings in the diagram are: 1-Main platform; 2-Top rod; 3-Reset spring; 4-Sampling core; 5-Groove; 6-Effort-saving lever; 7-Top pin; 8-Screw; 9-Limit stud; 10-Pedal; 11-Guide hole; 12-Sampling stage; 13-Sampling box; 14-Pull handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 3As shown, the present invention provides a coal mine geological drilling and sampling device, including a main platform 1, a top rod 2 that can move up and down is vertically installed on the main platform 1, a return spring 3 that pushes it to move upward is fitted on the rod body of the top rod 2, a vertically arranged sampling core 4 is detachably installed at the bottom of the top rod 2, a hollow cavity is opened inside the sampling core 4, and a groove 5 of equal length is opened on the side wall of the sampling core 4 along its axial direction, and a force-saving lever 6 that can press down the top rod 2 and drive the sampling core 4 to drill downward is rotatably installed on the top of the main platform 1.

[0028] In this embodiment, as Figure 5 As shown, the width of groove 5 is 1 / 3 of the diameter of the hollow cavity; of course, the width of groove 5 can also be 1 / 2 of the diameter of the hollow cavity. Figure 5 As shown, the lower end of sampling core 4 is a pointed tip. Figure 6 As shown, the top end of the return spring 3 abuts against the top pin 7 that passes through the top rod 2, and the bottom end of the return spring 3 abuts against the slot of the main unit 1. Figure 7 As shown, the top of the sampling core 4 is inserted into the inside of the top rod 2, and the sampling core 4 is completely fixed by screws 8 installed on the side wall of the sampling core 4. A limiting stud 9, vertically positioned and away from the rotating end of the effort-saving lever 6, is threaded onto the main unit 1. The nut of the limiting stud 9 can prevent the downward rotation of the effort-saving lever 6. Figure 1 As shown, a foot pedal 10 is installed at the bottom of the main unit 1, and the upper surface of the foot pedal 10 has multiple anti-slip grooves arranged in a linear array. Figures 1 to 2 As shown, the bottom of the main unit 1 has guide holes 11 corresponding vertically to the position of the sampling core 4. The diameter of the guide holes 11 is 1.1 times the diameter of the sampling core 4; of course, the diameter of the guide holes 11 can also be 1.2 times the diameter of the sampling core 4. Figure 1 As shown, a sampling stage 12 is mounted on the upper surface where the guide hole 11 is located, and a sampling box 13 that can be pulled outwards is slidably mounted on the sampling stage 12. Figure 5 As shown, a pull handle 14 is fixed to the outside of the sampling box 13.

[0029] When using this coal mine geological drilling and sampling device, first place the device at the desired sampling location, and the operator steps on pedal 10 to stabilize the device. Then, by manipulating the force-saving lever 6 to press down the top rod 2, the sampling core 4 is drilled downwards. When the sampling core 4 has penetrated to a certain depth into the underground rock and soil layer, the force-saving lever 6 is released, and the return spring 3 pushes the top rod 2 upwards, pulling the sampling core 4 out of the underground rock and soil layer. Subsequently, the sampling box 13 is pushed directly below the sampling core 4. Figure 4As shown. At this time, due to the action of the groove 5 and the frequent tapping of the top rod 2 by the force-saving lever 6, the sample in the hollow cavity of the sampling core 4 will generate a certain vibration, and the coal sample will easily detach from the sampling core 4 and fall into the sampling box 13. The operator can pull out the sampling box 13 by pulling the handle 14 to take out the sample for analysis and research.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A coal mine geological drilling and sampling device, comprising a main unit; Its features are: The main unit is vertically mounted with a top rod that can move up and down. A return spring is fitted on the rod to push it upward. A vertically arranged sampling core is detachably mounted at the bottom of the top rod. The sampling core has a hollow cavity inside. A groove of equal length to the sampling core is formed along its axial direction on the side wall of the sampling core. The top of the main unit is rotatably equipped with a force-saving lever that can press down the top rod and drive the sampling core downward to drill.

2. The coal mine geological drilling and sampling device according to claim 1, characterized in that: The width of the groove is 1 / 3 to 1 / 2 of the diameter of the hollow cavity.

3. The coal mine geological drilling and sampling device according to claim 2, characterized in that: The lower end of the sampling core is a pointed tip.

4. The coal mine geological drilling and sampling device according to claim 1, characterized in that: The top end of the return spring abuts against the top pin that passes through the top rod, and the bottom end of the return spring abuts against the slot of the main unit.

5. The coal mine geological drilling and sampling device according to claim 1, characterized in that: The top of the sampling core is inserted into the inside of the top rod, and the sampling core is completely fixed by screws installed on the side wall of the sampling core.

6. The coal mine geological drilling and sampling device according to claim 1, characterized in that: The main unit is threaded with a vertically positioned limiting stud that is far from the rotating end of the lever. The nut of the limiting stud can prevent the lever from rotating downwards.

7. The coal mine geological drilling and sampling device according to claim 1, characterized in that: The bottom of the main unit is equipped with a pedal, and the upper surface of the pedal has multiple anti-slip grooves arranged in a linear array.

8. The coal mine geological drilling and sampling device according to any one of claims 1-7, characterized in that: The bottom of the main unit is provided with guide holes that correspond to the position of the sampling core. The diameter of the guide holes is 1.1-1.2 times the diameter of the sampling core.

9. The coal mine geological drilling and sampling device according to claim 8, characterized in that: A sampling stage is installed on the upper surface where the guide hole is located, and a sampling box that can be pulled outward is slidably installed on the sampling stage.

10. The coal mine geological drilling and sampling device according to claim 9, characterized in that: The sampling box is fixed with a pull handle on the outside.

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