A device for detecting the wear resistance of a PDC rock bit

Abstract

The utility model discloses a kind of PDC rock drill wear resistance detection devices, a kind of PDC rock drill wear resistance detection device, including base, the surface of base is fixed with fixed assembly, vertical pressurization assembly for installing PDC rock drill is equipped on fixed assembly, sample fixing assembly for installing rock sample is equipped on the base upper surface below vertical pressurization assembly;The vertical pressurization assembly can drive the PDC rock drill moves up and down in vertical direction, compared with prior art, the beneficial effects of the utility model are: the utility model one kind PDC rock drill wear resistance detection device is aimed at the problem that existing drill detection device needs to frequently stop and replace rock sample, by setting sample fixing assembly, feeding mechanism, push material mechanism and discharging plate, the quick replacement of rock sample is realized, drill rig is not needed to be closed, the continuity of drill bit drilling test is improved, time and operation trouble are saved.

Description

Technical Field

[0001] This utility model relates to the field of drill bit testing technology, specifically to a PDC rock drilling bit wear resistance testing device. Background Technology

[0002] In the manufacturing of rock drilling bits, accurate and efficient testing of bit performance is crucial for ensuring product quality and enhancing competitiveness. PDC (polycrystalline diamond composite) drill bits, with their superior properties such as high hardness and high wear resistance, are widely used in numerous fields including petroleum and geological exploration. Therefore, testing the performance of PDC drill bit composites is particularly important, as the test data directly affects the drill bit's performance and lifespan under actual working conditions.

[0003] Currently, CN117214008A discloses a performance testing device for PDC drill bit composite plates. The device is fixedly mounted on a base, with a vertical pressure assembly on the frame. A horizontal drive assembly is located on one side of the vertical pressure assembly, and a sample assembly for driving the rotation of a rock sample is mounted on the base below the vertical pressure assembly. The horizontal drive assembly pushes the vertical pressure assembly to move laterally. The hydraulic cylinder piston, triaxial force sensor, angle adjuster, and PDC drill bit composite plate of the vertical pressure assembly are connected sequentially from top to bottom. The triaxial force sensor collects and monitors the axial force, radial force, and tangential force data acting on the PDC drill bit composite plate in real time. The angle adjuster is used to adjust the working angle of the PDC drill bit composite plate to simulate wear conditions under different cutting angles.

[0004] However, in actual drill bit performance testing, especially for key performance indicators such as wear resistance, impact resistance, and thermal stability, continuous destructive testing is often required. This is because only through long-term, continuous interaction with rock samples can the stress and wear process of the drill bit in the actual working environment be realistically simulated, thereby obtaining accurate and reliable test data.

[0005] However, in the aforementioned prior art, rock samples are held and fixed using a clamping device. During drill bit wear resistance tests, it is difficult to visually observe changes on the drill bit surface during short-duration drilling. To obtain comprehensive and accurate test data, rock samples need to be frequently replaced. Each time a rock sample is replaced, the drilling rig must be shut down, the tested sample manually removed from the clamping device, a new sample installed, and the drilling rig restarted. This series of operations is not only cumbersome and complex but also time-consuming, severely impacting the continuity of drill bit drilling tests. This disruption to the testing continuity leads to reduced accuracy and reliability of the test data, failing to accurately reflect the drill bit's performance during actual use, and consequently posing challenges to drill bit production quality control and performance optimization.

[0006] Based on the problems existing in the prior art, this utility model aims to propose a quality inspection device for rock drilling bit production that can quickly replace rock samples, so as to solve the problems of troublesome operation, long time consumption and impact on the continuity of testing in the prior art, and improve the efficiency and accuracy of drill bit performance testing. Utility Model Content

[0007] The purpose of this invention is to provide a quality inspection device for rock drilling bit production that enables quick and convenient replacement of rock samples. This device addresses the problem in the prior art where, during drill bit wear resistance testing, it is difficult to visually observe changes on the drill bit surface during short-term drilling, necessitating frequent machine shutdowns for manual replacement of rock samples. This results in cumbersome operation, time consumption, and disruption of test continuity. The invention aims to improve the efficiency and convenience of drill bit drilling tests.

[0008] This utility model provides the following technical solution: a PDC rock drill bit wear resistance testing device, including a base, a fixing assembly fixed on the surface of the base, a vertical pressure assembly for mounting the PDC rock drill bit on the fixing assembly, and a sample fixing assembly for mounting rock samples on the upper surface of the base below the vertical pressure assembly.

[0009] The vertical pressurization assembly can drive the PDC rock drill bit to move up and down in the vertical direction, and the vertical pressurization assembly can drive the PDC rock drill bit to rotate in the horizontal direction;

[0010] The sample fixing assembly includes a fixing seat disposed above the base and fixed to the fixing assembly, a fixing sleeve vertically disposed on the fixing seat, and a clamping mechanism disposed on the inner wall of the fixing sleeve for clamping the rock sample.

[0011] The fixed base is provided with a feeding port, the fixed sleeve is open at both ends and coincides with the axis of the feeding port, and the base is provided with a feeding mechanism for feeding the rock sample into the fixed sleeve through the feeding port.

[0012] The feeding mechanism includes a feeding telescopic cylinder and a feeding tray. The lower end of the feeding telescopic cylinder is connected to the base, and the upper end of the feeding telescopic cylinder is connected to the feeding tray.

[0013] The fixing assembly is provided with a pushing mechanism on one side of the upper end of the fixing sleeve. The pushing mechanism includes a pushing telescopic cylinder and a pushing plate. One end of the pushing telescopic cylinder is fixedly connected to the fixing assembly, and the other end of the pushing telescopic cylinder is fixedly connected to the pushing plate.

[0014] The fixing assembly has a feed plate fixed on the other side of the upper end of the fixing sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, a PDC rock drill bit wear resistance testing device, addresses the problem that existing drill bit testing devices require frequent shutdowns to replace rock samples. By setting up a sample fixing assembly, a feeding mechanism, a pushing mechanism, and a feeding plate, it achieves rapid replacement of rock samples without shutting down the drill, thus improving the continuity of drill bit drilling tests and saving time and operational hassle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3This utility model discloses a PDC rock drill bit wear resistance testing device, including a base 10, a fixing assembly 20 fixed on the surface of the base 10, a vertical pressure assembly 30 for mounting the PDC rock drill bit a on the fixing assembly 20, and a sample fixing assembly 50 for mounting a rock sample 40 on the upper surface of the base 10 below the vertical pressure assembly 30. The vertical pressure assembly 30 can drive the PDC rock drill bit a to move up and down in the vertical direction and can also drive the PDC rock drill bit a to rotate in the horizontal direction. In use, the PDC rock drill bit a is installed at the bottom end of the vertical pressure assembly 30, the rock sample 40 is fixed by the sample fixing assembly 50, and then the vertical pressure assembly 30 drives the PDC rock drill bit a to rotate and move downward, so that the PDC rock drill bit a drills into the rock sample 40. The wear resistance of the PDC rock drill bit a is tested by observing its wear condition.

[0021] It is understandable that existing publicly available drill bit testing devices, such as the PDC drill bit composite plate performance testing experimental device disclosed in CN117214008A, are difficult to implement continuous drilling and require frequent shutdowns during drilling to replace rock samples 40, which is quite cumbersome. In order to solve the above problems, this utility model makes the following main improvements based on the existing drill bit production testing device:

[0022] The sample fixing assembly 50 for fixing the rock sample 40 includes a fixing seat 51 disposed above the base 10 and fixed to the fixing assembly 20, a fixing sleeve 52 vertically disposed on the fixing seat 51, and a clamping mechanism 60 disposed on the inner wall of the fixing sleeve 52 for clamping the rock sample 40. When it is necessary to fix the rock sample 40, the rock sample 40 is placed into the fixing sleeve 52 and the rock sample 40 is fixed by the clamping mechanism 60.

[0023] Furthermore, the fixed base 51 is provided with a feeding port 53, which is preferably a cylindrical structure. The fixed sleeve 52 is open at both ends and coincides with the axis of the feeding port 53. The base 10 is provided with a feeding mechanism 70 for feeding the rock sample 40 into the fixed sleeve 52 through the feeding port 53.

[0024] In this embodiment, the feeding mechanism 70 includes a feeding telescopic cylinder 71 and a feeding tray 72. The lower end of the feeding telescopic cylinder 71 is connected to the base 10, and the upper end of the feeding telescopic cylinder 71 is connected to the feeding tray 72. The feeding tray 72 is provided with a placement groove that can hold the rock sample 40.

[0025] With the feeding mechanism 70 in place, during the test, firstly, a new rock sample 40 is placed in the feeding tray 72. When the rock sample 40 in the fixed sleeve 52 is about to be drilled through by the PDC rock drill bit a, the vertical pressure assembly 30 is controlled to drive the PDC rock drill bit a away from the rock sample 40. Then, the clamping mechanism 60 is released and the feeding telescopic cylinder 71 is extended to drive the feeding tray 72 from the lower end of the feeding port 53 into the fixed sleeve 52. This allows the rock sample 40 that has been drilled through and discarded to be automatically pushed out from the upper end of the fixed sleeve 52 by the newly entered rock sample 40. Finally, the clamping mechanism 60 is used to fix the newly entered rock sample 40. In this way, the rapid replacement of the rock sample 40 is completed.

[0026] In order to better remove the waste rock sample 40, the fixing assembly 20 is provided with a pushing mechanism 80 on the upper side of the fixing sleeve 52. The pushing mechanism 80 includes a pushing telescopic cylinder 81 and a pushing plate 82. One end of the pushing telescopic cylinder 81 is fixedly connected to the fixing assembly 20, and the other end of the pushing telescopic cylinder 81 is fixedly connected to the pushing plate 82. After the waste rock sample 40 is pushed out of the fixing sleeve 52, the pushing telescopic cylinder 81 extends and pushes it away from one side of the fixing sleeve 52 through the pushing plate 82.

[0027] Furthermore, a feed plate 83 is fixed on the other side of the upper end of the fixing sleeve 52 in the fixing assembly 20. Baffles 84 are integrally formed on both sides of the feed plate 83, so that the drilled rock sample 40 can be pushed away from the surface of the fixing seat 51 along the feed plate 83.

[0028] Specifically, such as Figure 1 As shown, the side of the fixed sleeve 52 is provided with a through hole. The clamping mechanism 60 includes a clamping plate 61 and a clamping telescopic cylinder 62. The clamping plate 61 is movably disposed in the through hole and fixed to one end of the clamping telescopic cylinder 62. The other end of the clamping telescopic cylinder 62 is fixedly connected to the surface of the fixed seat 51.

[0029] In this embodiment, the lower end of the fixing sleeve 52 is fixed to the upper inner wall of the feeding port 53, and the diameter of the feeding tray 72 is consistent with the inner diameter of the feeding port 53.

[0030] In some embodiments, the lower end of the feeding telescopic cylinder 71 is directly fixedly connected to the surface of the base 10.

[0031] In some embodiments, a slider 73 is fixed to the lower end of the feeding telescopic cylinder 71, and a slide rail 74 is fixed to the surface of the base 10. The slider 73 is slidably connected to the slide rail 74. The feeding telescopic cylinder 71 is slidably set on the surface of the base 10. When feeding, the feeding telescopic cylinder 71 can be moved out from the bottom side of the fixed seat 51 first, and then the movement of the feeding telescopic cylinder 71 can drive the rock sample 40 to the bottom of the feeding port 53, which is convenient to use.

[0032] like Figure 2 As shown, a screw 75 is rotatably installed inside the slide rail 74. The screw 75 is threadedly connected to the slider 73. A motor 76 is fixed to one end of the slide rail 74. The output shaft of the motor 76 is fixedly connected to one end of the screw 75. When in use, the external power supply of the motor 76 is turned on, and the output shaft of the motor 76 drives the screw 75 to rotate. When the screw 75 rotates, it drives the slider 73 to slide. The slider 73 drives the feeding telescopic cylinder 71 to move, which is convenient to use.

[0033] In this embodiment, the vertical pressurization assembly 30 includes a telescopic cylinder 31 fixed to the upper end of the fixed assembly 20 and a drive motor 32 fixed to the lower end of the telescopic cylinder 31. The PDC rock drilling bit a is fixed on the output shaft of the drive motor 32. It can be understood that installing the drive motor 32 on the telescopic end of the telescopic cylinder 31 and installing the drill bit on the output shaft of the drive motor 32 to realize the drill bit drilling into the rock through the telescopic cylinder 31 during rotation is the prior art. The related technology CN203223225U is a drilling device installed on a hard rock tunneling machine, which will not be described in detail here.

[0034] In use, the present invention first installs the PDC rock drill bit a to be tested on the bottom end of the vertical pressure assembly 30, which is the output shaft of the drive motor 32. The rock sample 40 is limited by the sample fixing assembly 50, and the spare rock sample 40 is placed in the loading tray 71. Then, the external power supply of the drive motor 32 is turned on to drive the PDC rock drill bit a to rotate. At the same time, the telescopic cylinder 31 drives the PDC rock drill bit a to move downward and drill the rock sample 40. When the sample inside the fixed sleeve 52 is about to be drilled through, the telescopic cylinder 31 is controlled to retract, driving the PDC rock drill bit a to leave the inside of the fixed sleeve 52. The clamping mechanism 60 is released and the loading telescopic cylinder 71 is controlled to extend, so that the new sample enters from the bottom of the discharge port 53 and pushes the waste sample upward. The clamping mechanism 60 then clamps the new sample. The pushing telescopic cylinder 72 can also push the waste sample away to the discharge plate 83 to slide away, realizing rapid sample change and continuous drilling.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PDC rock drill bit wear resistance testing device, comprising a base, a fixing assembly fixed to the surface of the base, a vertical pressure assembly for mounting the PDC rock drill bit on the fixing assembly, and a sample fixing assembly for mounting a rock sample on the upper surface of the base below the vertical pressure assembly, characterized in that: The vertical pressurization assembly can drive the PDC rock drill bit to move up and down in the vertical direction, and the vertical pressurization assembly can drive the PDC rock drill bit to rotate in the horizontal direction; The sample fixing assembly includes a fixing seat disposed above the base and fixed to the fixing assembly, a fixing sleeve vertically disposed on the fixing seat, and a clamping mechanism disposed on the inner wall of the fixing sleeve for clamping the rock sample. The fixed base is provided with a feeding port, the fixed sleeve is open at both ends and coincides with the axis of the feeding port, and the base is provided with a feeding mechanism for feeding the rock sample into the fixed sleeve through the feeding port. The feeding mechanism includes a feeding telescopic cylinder and a feeding tray. The lower end of the feeding telescopic cylinder is connected to the base, and the upper end of the feeding telescopic cylinder is connected to the feeding tray.

2. The PDC rock drill bit wear resistance testing device as described in claim 1, characterized in that: The fixing assembly is provided with a pushing mechanism on one side of the upper end of the fixing sleeve. The pushing mechanism includes a pushing telescopic cylinder and a pushing plate. One end of the pushing telescopic cylinder is fixedly connected to the fixing assembly, and the other end of the pushing telescopic cylinder is fixedly connected to the pushing plate. The fixing assembly has a feed plate fixed on the other side of the upper end of the fixing sleeve.

3. The PDC rock drill bit wear resistance testing device as described in claim 1, characterized in that: The side of the fixed sleeve is provided with a through hole. The clamping mechanism includes a clamping plate and a clamping telescopic cylinder. The clamping plate is movably disposed in the through hole and fixed to one end of the clamping telescopic cylinder. The other end of the clamping telescopic cylinder is fixedly connected to the surface of the fixed seat.

4. The PDC rock drill bit wear resistance testing device as described in claim 1, characterized in that: The lower end of the fixed sleeve is fixed to the upper inner wall of the feeding port, and the diameter of the feeding tray is consistent with the inner diameter of the feeding port.

5. The PDC rock drill bit wear resistance testing device as described in claim 1, characterized in that: The lower end of the feeding telescopic cylinder is fixed with a slider, and the surface of the base is fixed with a slide rail, and the slider is slidably connected to the slide rail.

6. The PDC rock drill bit wear resistance testing device as described in claim 5, characterized in that: A screw is rotatably installed inside the slide rail, and the screw is threadedly connected to the slider. A motor is fixed to one end of the slide rail, and the output shaft of the motor is fixedly connected to one end of the screw.

7. The PDC rock drill bit wear resistance testing device as described in claim 1, characterized in that: The vertical pressurization assembly includes a telescopic cylinder fixed to the upper end of the fixed assembly and a drive motor fixed to the lower end of the telescopic cylinder.

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