Hydraulic alarm tandem type drilling reamer for geological core drilling

Abstract

The utility model provides a hydraulic alarm tandem type drilling reamer for geological core drilling, which belongs to the technical field of geological drilling and comprises a sleeve, and two notches are arranged on the lateral side of the sleeve. The hydraulic scraper assembly is arranged in the sleeve, the hydraulic rod is controlled to stretch out and draw back through the hydraulic machine, and then the displacement of the side block in the sleeve is controlled, so that the side block pushes the fixed cross rod to move upwards through the transmission rod, and due to the fact that a supporting part is reserved between every two adjacent inner grooves, when the fixed cross rod moves upwards, the side block can move upwards. When the fixing cross rod moves upwards, the blade can be conveyed to the outer side of the sleeve, then the hole expanding operation is achieved, after the blade is expanded outwards, the clamping block sliding inwards can be disengaged from the inner groove and then horizontally moves to the lower surface of the fixing cross rod, and the fixing cross rod falls to the side face of the clamping block, so that the blade is fixed. And the fixed cross rod is supported through the connecting plate and the clamping block, and a better reverse supporting effect on the blade can be achieved in the drilling process.

Description

Technical Field

[0001] This utility model belongs to the field of geological drilling technology, and in particular relates to a hydraulic alarm series-type borehole reamer for geological core drilling. Background Technology

[0002] Geological core drilling is a technique used to obtain underground rock samples. It involves using specialized drilling equipment to extract a complete rock sample from underground.

[0003] The hydraulic alarm series borehole reamer is a device used for underground drilling and borehole reaming operations. Its main function is to expand the borehole diameter through a hydraulic system, while monitoring and alarming to ensure the safety and efficiency of the operation.

[0004] For example, the hydraulic alarm series-type borehole reamer for geological core drilling, published under the number CN202970476U, includes a guide drill bit and a plunger sleeve. Its characteristic is that at least two reaming units connected in series are provided between the guide drill bit and the plunger sleeve. Each reaming unit includes upper and lower connectors and a blade seat. The upper and lower reaming units are connected and fixed to each other through the upper and lower connectors.

[0005] Existing hydraulic alarm tandem borehole reamers for geological core drilling still have the following shortcomings:

[0006] 1. Existing drilling and reaming tools use a hydraulic press and a different diameter push rod to push the reaming blade during the reaming operation. Over time, this can easily cause frictional wear between the push rod and the reaming blade.

[0007] 2. Existing drilling and reaming tools do not have an additional fluid delivery structure designed during use. They can only rely on the liquid medium flowing out of the drill bit to lubricate the drilling part, which can easily lead to the loss of liquid medium and damage to the instrument. Utility Model Content

[0008] The purpose of this invention is to solve the problem that in the existing technology, the use of hydraulic presses and different diameter push rods to push the reaming blades can easily cause frictional wear between the push rods and the reaming blades during long-term use. In addition, existing drilling reamers do not have an additional fluid delivery structure designed during use and can only rely on the liquid medium flowing out of the drill bit to lubricate the drilling part, which can easily lead to the loss of liquid medium and damage to the instrument. The proposed invention is a hydraulic alarm series drilling reamer for geological core drilling.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A hydraulic alarm series-type borehole reamer for geological core drilling includes: a casing with two slots on its side, threaded connectors fixedly connected to both ends of the casing, a drill bit threadedly connected to the casing through the threaded connectors, and a hydraulic scraper assembly, a shock-absorbing structure, and a lubrication structure disposed inside the casing.

[0011] Preferably, the hydraulic scraper assembly includes a hydraulic control structure, an elastic scraper structure, and a sliding structure. The hydraulic control structure includes a hydraulic press, which is fixedly connected to the inner side of the sleeve. The hydraulic press is fixedly connected to a side block via a hydraulic rod, and the side block is slidably connected inside the sleeve.

[0012] Preferably, each of the two side blocks is fixedly connected to a fixing ring block on the side that is close to the side block, and the side of the fixing ring block away from the side block is fixedly connected to four connecting plates in a ring array, and the side of the connecting plate is evenly fixedly connected to a number of snap-fit ​​blocks.

[0013] Preferably, a fixed crossbar is provided in the slot, the fixed crossbar is located above the connecting plate, a transmission rod is rotatably connected between the fixed crossbar and the side block, a blade is fixedly connected to the outer side of the fixed crossbar, and a plurality of inner grooves are provided on the inner side of the fixed crossbar.

[0014] Preferably, the transmission rod includes a first-order rod and a second-order rod, the first-order rod being rotatably connected to the side of the side block, and the second-order rod being rotatably connected to the side of the fixed crossbar, with the ends of the first-order rod and the second-order rod close to each other hinged together.

[0015] Preferably, the shock-absorbing structure includes a spring, which is fixedly connected between the hydraulic press and the side block, and the hydraulic rod is disposed inside the spring;

[0016] Preferably, the lubrication structure includes an infusion tube, which is fixedly connected between two threaded connectors, and a drainage tube is fixedly connected to the side of the infusion tube, which passes through and is fixedly connected inside the sleeve.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. This utility model sets a hydraulic scraper assembly inside the sleeve, and controls the extension and retraction of the hydraulic rod by a hydraulic press, thereby controlling the displacement of the side block inside the sleeve. As a result, the side block pushes the fixed crossbar upward via the transmission rod. Because there are support parts between adjacent inner grooves, when the fixed crossbar moves upward, the connecting plate and the snap-fit ​​block will also slide inward. When the fixed crossbar moves upward, it will send the blade outward to the outside of the sleeve, thereby realizing the hole enlargement operation. After the blade is enlarged outward, the inwardly sliding snap-fit ​​block will disengage from the inner groove and move to the lower surface of the fixed crossbar, so that the fixed crossbar falls to the side of the snap-fit ​​block. The connecting plate and the snap-fit ​​block support the fixed crossbar, which can provide better reverse support for the blade during the drilling process.

[0019] 2. By setting a lubrication structure inside the casing, the lubricant can be delivered to the outside of the casing through the infusion pipe during drilling. When the drill bit is drilling, the lubricant can be delivered to the side of the cutting tool through the drainage pipe. It can also provide lubrication for hole enlargement during hole enlargement operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the outer structure of the hydraulic alarm series borehole reamer for geological core drilling proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the hydraulic alarm series borehole reamer for geological core drilling proposed in this utility model.

[0022] Figure 3 This is a schematic diagram of the internal disassembly structure of the hydraulic alarm series borehole reamer for geological core drilling proposed in this utility model;

[0023] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0024] In the diagram: 1. Sleeve; 2. Groove; 3. Threaded connector; 4. Drill bit; 5. Hydraulic press; 6. Hydraulic rod; 7. Side block; 8. Spring; 9. Transmission rod; 10. Fixed crossbar; 11. Blade; 12. Inner groove; 13. Fixed ring block; 14. Connecting plate; 15. Snap-fit ​​block; 16. Infusion tube; 17. Drainage tube. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] Reference Figures 1-4A hydraulic alarm series drilling and reaming tool for geological core drilling includes: a casing 1, two slots 2 on the side of the casing 1, threaded connectors 3 fixedly connected to both ends of the casing 1, a drill bit 4 threadedly connected to the casing 1 through the threaded connectors 3, and a hydraulic scraper assembly, a shock absorption structure and a lubrication structure installed inside the casing 1.

[0027] The hydraulic scraper assembly includes a hydraulic control structure, an elastic scraper structure, and a sliding structure. The hydraulic control structure includes a hydraulic press 5, which is fixedly connected to the inner side of the sleeve 1. The hydraulic press 5 is fixedly connected to a side block 7 via a hydraulic rod 6. The side block 7 is slidably connected inside the sleeve 1. Fixed ring blocks 13 are fixedly connected to the sides of the two side blocks 7 that are close to each other. Four connecting plates 14 are fixedly connected in a ring array to the sides of the fixed ring blocks 13 that are away from the side blocks 7. Several snap-fit ​​blocks 15 are evenly fixedly connected to the sides of the connecting plates 14. A fixed crossbar 10 is provided in the slot 2, positioned above the connecting plates 14. A transmission rod 9 is rotatably connected between the fixed crossbar 10 and the side blocks 7. The transmission rod 9 includes a first-order rod and a second-order rod. The first-order rod is rotatably connected to the side of the side block 7, and the second-order rod is rotatably connected to the side of the fixed crossbar 10. The ends of the first-order rod and the second-order rod that are close to each other are hinged together. The outer side of the fixed crossbar 10 is fixedly connected with a blade 11. The inner side of the fixed crossbar 10 is provided with several inner grooves 12. By setting a hydraulic scraper assembly in the sleeve 1, the hydraulic press 5 controls the extension and retraction of the hydraulic rod 6, thereby controlling the displacement of the side block 7 in the sleeve 1. Thus, the side block 1 pushes the fixed crossbar 10 upward via the transmission rod 9. Because there is a support part between the adjacent inner grooves 12, when the fixed crossbar 10 moves upward, the connecting plate 14 and the snap-fit ​​block 15 will also slide inward. When the fixed crossbar 10 moves upward, the blade 11 will be sent out to the outside of the sleeve 1, thereby realizing the hole enlargement operation. After the blade 11 is enlarged outward, the inwardly sliding snap-fit ​​block 15 will disengage from the inner groove 12 and then move to the lower surface of the fixed crossbar 10, so that the fixed crossbar 10 falls to the side of the snap-fit ​​block 15. The connecting plate 14 and the snap-fit ​​block 15 support the fixed crossbar 10, which can provide better reverse support for the blade 11 during the drilling process.

[0028] The shock absorption structure includes a spring 8, which is fixedly connected between the hydraulic press 5 and the side block 7, and a hydraulic rod 6 is disposed inside the spring 8.

[0029] The lubrication structure includes an infusion tube 16, which is fixedly connected between two threaded connectors 3. A drainage tube 17 is fixedly connected to the side of the infusion tube 16. The drainage tube 17 passes through and is fixedly connected inside the casing 1. By setting the lubrication structure inside the casing 1, the lubricant can be delivered to the outside of the casing by the infusion tube 16 during drilling. When the drill bit is drilling, the lubricant can be delivered to the side of the cutting tool 11 through the drainage tube 17. It can also provide lubrication for hole reaming during hole reaming operations.

[0030] The functional principle of this utility model can be explained through the following operation methods:

[0031] By setting a hydraulic scraper assembly inside the sleeve 1, and controlling the extension and retraction of the hydraulic rod 6 through the hydraulic press 5, the displacement of the side block 7 inside the sleeve 1 is controlled. Thus, the side block 7 pushes the fixed crossbar 10 upward via the transmission rod 9. Because there is a support part between the adjacent inner grooves 12, when the fixed crossbar 10 moves upward, the connecting plate 14 and the snap-fit ​​block 15 will also slide inward. When the fixed crossbar 10 moves upward, the blade 11 will be sent outward to the outside of the sleeve 1, thereby realizing the hole enlargement operation. After the blade 11 is enlarged outward, the inwardly sliding snap-fit ​​block 15 will disengage from the inner groove 12 and then move to the lower surface of the fixed crossbar 10, so that the fixed crossbar 10 falls to the side of the snap-fit ​​block 15. The connecting plate 14 and the snap-fit ​​block 15 support the fixed crossbar 10, which can provide better reverse support for the blade 11 during the drilling process.

[0032] By setting a lubrication structure inside the casing 1, lubricant can be delivered to the outside of the casing through the infusion pipe 16 during drilling, and lubricant can be delivered to the side of the cutting tool 11 through the drainage pipe 17 during drilling. It can also provide lubrication for hole reaming during hole reaming operation.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hydraulic alarm-type tandem borehole reamer for geological core drilling, characterized in that, It includes a sleeve (1), which has two slots (2) on its side. Threaded connectors (3) are fixedly connected to both ends of the sleeve (1). A drill bit (4) is threadedly connected to the sleeve (1) through the threaded connectors (3). A hydraulic scraper assembly, a shock-absorbing structure, and a lubrication structure are provided inside the sleeve (1).

2. The hydraulic alarm series-type borehole reamer for geological core drilling according to claim 1, characterized in that: The hydraulic scraper assembly includes a hydraulic control structure, an elastic scraper structure, and a sliding structure. The hydraulic control structure includes a hydraulic press (5), which is fixedly connected to the inner side of the sleeve (1). The hydraulic press (5) is fixedly connected to a side block (7) via a hydraulic rod (6), and the side block (7) is slidably connected inside the sleeve (1).

3. The hydraulic alarm series-type borehole reamer for geological core drilling according to claim 2, characterized in that: The two side blocks (7) are fixedly connected to each other on their sides with fixed ring blocks (13). The side of the fixed ring blocks (13) away from the side blocks (7) is fixedly connected to four connecting plates (14) in a ring array. The side of the connecting plates (14) is evenly fixedly connected to several snap-fit ​​blocks (15).

4. The hydraulic alarm series-type borehole reamer for geological core drilling according to claim 3, characterized in that: A fixed crossbar (10) is provided in the slot (2). The fixed crossbar (10) is located above the connecting plate (14). A transmission rod (9) is rotatably connected between the fixed crossbar (10) and the side block (7). A blade (11) is fixedly connected to the outer side of the fixed crossbar (10). Several inner grooves (12) are provided on the inner side of the fixed crossbar (10).

5. The hydraulic alarm series-type borehole reamer for geological core drilling according to claim 4, characterized in that: The transmission rod (9) includes a first-order rod and a second-order rod. The first-order rod is rotatably connected to the side of the side block (7), and the second-order rod is rotatably connected to the side of the fixed crossbar (10). The ends of the first-order rod and the second-order rod that are close to each other are hinged to each other.

6. The hydraulic alarm series-type borehole reamer for geological core drilling according to claim 2, characterized in that: The shock-absorbing structure includes a spring (8), which is fixedly connected between the hydraulic press (5) and the side block (7), and the hydraulic rod (6) is disposed inside the spring (8).

7. The hydraulic alarm series-type borehole reamer for geological core drilling according to claim 4, characterized in that: The lubrication structure includes an infusion tube (16), which is fixedly connected between two threaded connectors (3). A drainage tube (17) is fixedly connected to the side of the infusion tube (16), and the drainage tube (17) passes through and is fixedly connected inside the sleeve (1).

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