Rock core sampling and pushing device

Abstract

The utility model relates to a pushing and pressing device for core sampling, and belongs to the technical field of core sampling. The device comprises a main body support and an operation platform obliquely arranged on the main body support, a hydraulic oil cylinder is fixedly arranged at the higher end of the operation platform, the output end of the hydraulic oil cylinder points to the lower side of the operation platform, and a sample pushing ball head is detachably connected to the output end of the hydraulic oil cylinder. A sampling pipe is arranged at the lower end of the operating platform, and the axis extension line of the sampling pipe coincides with the axis of the hydraulic oil cylinder. The device is simple in structure and exquisite in layout, can adapt to drilling coring pipe operation of different specifications through the detachable and replaceable sample pushing ball head and the sampling pipe, meets diversified geological exploration requirements, and improves the universality and the application range of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of core sampling technology, specifically relating to a core sampling pushing device. Background Technology

[0002] Core samples are indispensable in the field of geological research, especially in geological exploration and mineral development. Core sampling during drilling operations is a key step in obtaining underground geological information. It can provide direct evidence about the continuity of strata and the physical properties of rocks, which is crucial for assessing the development potential of mineral resources and oil and gas fields.

[0003] Existing core sampling devices are mainly divided into mechanical and hydraulic types. They are powered by a screw, gear set, or hydraulic system, and the sampling process is completed by the sampling component. However, when extracting cores, existing sampling tools are prone to damage, breakage, or loss of the core due to unstable power transmission and large impact forces from the sampling component. This results in a loss of core integrity, making the extracted core samples unable to accurately and comprehensively reflect the geological information of the stratigraphy, thus affecting the accuracy of subsequent geological analysis. In addition, existing technologies also have the disadvantage of poor adaptability, failing to meet the needs of different specifications of drilling and coring operations, and making it difficult to adapt to the ever-increasing demands.

[0004] Therefore, a structure that can work stably, is more adaptable, and is more efficient is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a core sampling and pressing device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A core sampling and pressing device is characterized in that it includes a main support and an operating platform inclinedly mounted on the main support. A hydraulic cylinder is fixedly mounted at the higher end of the operating platform, and the output end of the hydraulic cylinder points to the lower side of the operating platform. A pusher ball head is detachably connected to the output end of the hydraulic cylinder. A sampling tube is mounted at the lower end of the operating platform, and the extended line of the axis of the sampling tube coincides with the axis of the hydraulic cylinder.

[0008] The main support is also equipped with a drive device and a control device connected to the drive device, and the drive device is connected to the hydraulic cylinder for transmission.

[0009] Furthermore, the sampling tube is characterized in that it is mounted on the operating platform by a plurality of fasteners, the fasteners including a lower clamping plate fixedly connected to the operating platform and an upper clamping plate rotatably connected to the lower clamping plate, and adjusting bolts are threaded to the ends of the two clamping plates.

[0010] Furthermore, a sample receiving platform is detachably connected to one end of the lower side of the operating platform.

[0011] Furthermore, the cross-section of the pusher head is trapezoidal to reduce the contact area between the pusher head and the inner side of the sampling tube.

[0012] Furthermore, a baffle is provided on the operating platform. The baffle is located at the lower end of the sampling tube and has a through groove corresponding to the sampling tube, so that the sampling tube passes through the through groove.

[0013] Furthermore, the drive device includes a hydraulic oil tank, a gear pump, and a motor. The gear pump is rotatably connected to the motor via a pulley, and the hydraulic oil tank is connected to the control device and the hydraulic cylinder pipeline via a high-pressure oil pipe.

[0014] The beneficial effects of this utility model are as follows:

[0015] With its simple structure and ingenious layout, the equipment can be adapted to different specifications of drilling core tubes through detachable and replaceable pusher heads and sampling tubes, meeting diverse geological exploration needs and improving the equipment's versatility and application range. In addition, the hydraulic system, baffles, and fixing devices make the working process more stable and efficient, improving the integrity of the core sample while increasing the overall efficiency of core drilling operations, reducing time and labor costs, and providing more authentic and reliable samples for subsequent geological analysis, thereby improving the accuracy of geological analysis results.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the core sampling and pressing device according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection status of the sample receiving platform according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the working state of the sampling tube according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the fixator shown in one embodiment of the present invention.

[0021] Explanation of the symbols in the attached diagram: 1. Main support; 2. Operating platform; 3. Baffle; 4. Sampling tube; 5. Fixing device; 51. Adjusting bolt; 52. Upper clamping plate; 53. Lower clamping plate; 6. Pushing ball head; 7. Hydraulic cylinder; 8. Gear pump; 9. Hydraulic oil tank; 10. Operating valve; 11. Sample receiving platform. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Please see Figure 1 The core sampling and pressing device shown in a preferred embodiment of this application includes a main support 1, an operating platform 2 and a driving device that are inclinedly arranged on the main support 1. A hydraulic cylinder 7 is fixedly arranged at the higher end of the operating platform 2, and the output end of the hydraulic cylinder 7 points to the lower side of the operating platform 2. A pushing ball head 6 is detachably connected to the output end of the hydraulic cylinder 7. A sampling tube 4 is arranged at the lower end of the operating platform 2, and the extended line of the axis of the sampling tube 4 coincides with the axis of the hydraulic cylinder 7.

[0027] It should be noted that the sampling tube 4 is set on the operating platform 2 by multiple fixers 5. The fixers 5 are used to stabilize the movement direction of the sampling tube 4, so that it can only move in the axial direction to prevent deviation that could cause core damage or breakage.

[0028] For details, please see Figure 4 The fixture 5 includes a lower clamping plate 53 fixedly connected to the operating platform 2 and an upper clamping plate 52 rotatably connected to the lower clamping plate 53. The ends of the two clamping plates are threaded with adjusting bolts 51. By rotating the adjusting bolts 51, sampling tubes 4 of different specifications can be disassembled, replaced and fixed to meet different needs.

[0029] The drive unit includes a hydraulic oil tank 9, an operating valve 10, a gear pump 8, and a motor. The gear pump 8 is rotatably connected to the motor via a pulley. The hydraulic oil tank 9 is connected to the operating valve 10 and the hydraulic cylinder 7 via a high-pressure oil pipe. The operating valve 10 controls the start and direction of movement of the gear pump 8.

[0030] For more details, please see Figure 2 The lower end of the operating platform 2 is detachably connected to a sample receiving platform 11, which is used to receive and place the sampling tube 4 after sampling is completed.

[0031] For preferred options, please refer to [link / reference]. Figure 3 The cross-section of the pusher ball head 6 is trapezoidal, thereby reducing the contact area between the pusher ball head 6 and the inner side of the sampling tube 4, preventing coarse sand from getting stuck between the pusher ball head 6 and the sampling tube 4, and thus preventing it from being too tight.

[0032] Preferably, in some embodiments, the operating platform 2 is also provided with a baffle 3, which is located at the lower end of the sampling tube 4 and has a through groove corresponding to the sampling tube 4. The baffle 3 is used to prevent impurities such as core debris from entering during the sampling process and thus affecting the sampling.

[0033] Working principle:

[0034] Install the core sampling and pushing device shown in this application next to the drilling equipment, connect the high-pressure oil pipe, hydraulic oil tank and other components, ensure that all components are installed firmly, and check that the operating valve is in the initial position.

[0035] Then, the motor is started, driving the gear pump to operate. Hydraulic oil is delivered to the hydraulic cylinder through the high-pressure oil pipe. The cylinder generates thrust, pushing the sample pusher head forward. The sample pusher head pushes the sampling tube deeper into the rock core inside the drill pipe. When the sample pusher head reaches the appropriate position, the operating valve controls the cylinder to stop moving, completing the fixation of the sampling tube to the rock core.

[0036] Then, the operating valve is operated again to make the cylinder move in the opposite direction, which drives the sampling tube and the internal rock core to be pulled out of the drill pipe together. The rock core is brought to the sampling platform to complete the rock core sampling.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A core sampling and pressing device, characterized in that, The system includes a main support frame and an operating platform that is tilted on the main support frame. A hydraulic cylinder is fixedly installed at the higher end of the operating platform. The output end of the hydraulic cylinder points to the lower side of the operating platform. A sample pusher ball head is detachably connected to the output end of the hydraulic cylinder. A sampling tube is installed at the lower end of the operating platform. The extended line of the axis of the sampling tube coincides with the axis of the hydraulic cylinder. The main support is also equipped with a drive device and a control device connected to the drive device, and the drive device is connected to the hydraulic cylinder.

2. The core sampling and pushing apparatus of claim 1, wherein, The sampling tube is mounted on the operating platform by several fasteners. Each fastener includes a lower clamp plate fixedly connected to the operating platform and an upper clamp plate rotatably connected to the lower clamp plate. Adjusting bolts are threaded to the ends of the two clamp plates.

3. The core sampling and pushing apparatus of claim 1, wherein, A sample receiving platform is detachably connected to one end of the lower side of the operating platform.

4. The core sampling and pushing apparatus of claim 1, wherein, The cross-section of the pusher head is trapezoidal, which is used to reduce the contact area between the pusher head and the inner side of the sampling tube.

5. The core sampling and pushing apparatus of claim 1, wherein, The operating platform is equipped with a baffle, which is located at the lower end of the sampling tube and has a through groove corresponding to the sampling tube, so that the sampling tube passes through the through groove.

6. The core sampling and pushing apparatus of claim 1, wherein, The drive device includes a hydraulic oil tank, a gear pump, and a motor. The gear pump is rotatably connected to the motor via a pulley, and the hydraulic oil tank is connected to the control device and the hydraulic cylinder pipeline via a high-pressure oil pipe.

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