Abrasion testing mechanism for mining cutter
By using the same rock sample in a single test to perform wear tests on wear-resistant rods made of various materials, the problem of existing technologies being limited to testing only a single tool on a fixed rock was solved, thus improving testing efficiency and reducing testing costs.
Patent Information
- Application Number
- CN202423223728.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing tool wear testing methods can only be performed on a single tool on a fixed rock, and are not effective, resulting in cumbersome operation and poor comparability of results, which are problems that existing technologies cannot solve.
A mining tool wear testing device was adopted, which solved the problem that each test could only be conducted on a single tool on a fixed rock, requiring the rock to be changed to test different types of tools, which increased the complexity and time cost of the test.
By using the same rock sample to conduct wear tests on wear-resistant rods (simulating cutting tools) of various materials in a single experiment, the number of times rock samples and wear-resistant rods need to be changed is reduced, thus improving test efficiency and lowering test costs.
Smart Images
Figure CN223692185U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the field of mining cutter wear testing, and particularly relates to a mining cutter wear testing mechanism. BACKGROUND
[0002] In rock mining operations, cutters are the most easily damaged components, and their replacement frequency is high and the consumption is large, which is mainly due to the complex mechanical properties of rock, including hardness, toughness and bedding structure, etc. These factors significantly affect the wear condition of the cutter. In view of the fact that different types of rocks may have significant differences in physical and chemical properties, when selecting the appropriate mining cutter and its speed, shape, material and other parameters, the unique properties of the rock must be taken into account. Ignoring these characteristics will directly affect the mining efficiency and cost.
[0003] Therefore, it is particularly important to conduct cutter wear tests in advance to select the optimal cutter configuration. Such tests can simulate the interaction between the cutter and the rock in a real mining scenario, and then evaluate the cutter wear under different parameter combinations. However, the current cutter wear test method has limitations: each test can only be performed on a single cutter on a fixed rock, and then the rock needs to be replaced to test other types of cutters. This approach is not only cumbersome to operate, but also due to the inherent differences between rock samples, the comparability of test results is greatly reduced, and the comparison effect is not satisfactory. Therefore, the existing technology needs to be further improved and improved. CONTENT OF THE UTILITY MODEL
[0004] The utility model provides a kind of mining cutter wear testing mechanism, solve the problem that each test can only be performed on a single cutter on a fixed rock, and then the rock needs to be replaced to test different types of cutters, increase the complexity and time cost of test.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] A kind of mining cutter wear testing mechanism, including rock multi-point clamping device, cutter multi-point abrasion device;
[0007] Rock multi-point clamping device includes the frame shell containing rock sample, and hydraulic cylinder is arranged on the lateral and upper and lower sides of the frame shell to realize the clamping of rock sample in lateral and upper and lower directions;
[0008] Cutter multi-point abrasion device includes rotating motor and wear-resistant rod mounting disc, wear-resistant rod mounting hole is arranged in different positions of the wear-resistant rod mounting disc, wear-resistant rod mounting hole is provided with wear-resistant rod of different materials for simulating cutter, rotating motor drives wear-resistant rod mounting disc to rotate, so that wear-resistant rod in different positions can contact different parts of rock sample, to carry out wear resistance comparison test of rock sample by different material wear-resistant rod.
[0009] By using the mining tool abrasion test mechanism of the present application, it allows to test the abrasion of multiple wear bars (simulating cutters) of different materials on the same rock sample in one test. This greatly reduces the number of times to replace the rock sample and wear bars, thereby significantly improving the test efficiency. As the test preparation and replacement steps are reduced, the entire test cycle is shortened, providing more time for the test personnel to analyze and optimize the test results. All wear bars are tested on the same rock sample, eliminating the influence of rock sample differences on the test results, making the comparison of the abrasion performance of wear bars of different materials more accurate and reliable, and it is easier to observe and compare the abrasion of wear bars of different materials, thereby more intuitively evaluating their performance. Due to the improvement of test efficiency, the use time of equipment and manpower is reduced, thereby reducing the test cost.
[0010] In the preferred implementation, the wear bar mounting disc surface is provided with first and second convex ribs intersecting with each other, and the wear bar mounting holes are arranged in the first and second convex ribs. Positioning holes are arranged on the side surface of the convex ribs, the positioning holes pass through the wear bar mounting holes, and the fixing member passes through the positioning holes to abut against the wear bar to mount the wear bar on the wear bar mounting disc.
[0011] The wear bar can be mounted in the wear bar mounting hole through a simple insertion and fixing operation, without complex installation steps or tools. The cooperation of the positioning hole and the fixing member makes the installation process smoother and reduces the installation time.
[0012] In the preferred implementation, the wear bar mounting holes of the first / second convex ribs are symmetrically arranged relative to the center of the wear bar mounting disc, and wear bars of the same material are mounted in wear bar mounting holes with the same rotational circumferential surface.
[0013] Mounting at least two wear bars of the same material on the same rotational circumferential surface reduces the influence of the quality difference of the wear bars themselves (such as the slight quality difference that may exist between wear bars of the same material and the same batch) on the experimental results.
[0014] In the preferred implementation, the rotating motor is a variable frequency motor, and the frequency of the variable frequency motor is adjusted to change the rotational speed of the wear bar to realize the wear performance test of the wear bar at different rotational speeds.
[0015] In the preferred implementation, a loading and feeding device is further included, the loading and feeding device includes a loading motor, a lead screw, and a moving member, the rock multi-point clamping device is connected to the moving member, the loading motor is rotated to move the rock multi-point clamping device towards the wear bar, and different sizes of axial loading forces are applied to the wear bar, thereby simulating different pressures that the wear bar bears in the actual working condition.
[0016] In the preferred implementation, a workbench is further included, which is provided with a guide rail, and the rock multi-point clamping device and the loading feeding device are arranged on the workbench, and the rock multi-point clamping device is provided with a sliding block at the bottom, and the sliding block is connected with the guide rail.
[0017] In the preferred implementation, the workbench is provided with a displacement sensor to measure the displacement distance of the rock multi-point clamping device.
[0018] In the preferred implementation, the infrared thermal imager collects the temperature of the wear-resistant rod and records it by the computer terminal, so as to monitor the temperature change of the wear-resistant rod in the test process in real time and evaluate the wear resistance of the wear-resistant rod.
[0019] In the preferred implementation, a spraying system is further included, which sprays cooling liquid to the wear-resistant rod to simulate the cooling process in actual work. BRIEF DESCRIPTION OF DRAWINGS
[0020] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:
[0021] Figure 1 A schematic embodiment of the rock sample test mechanism is shown in the drawings.
[0022] Figure 2 A schematic embodiment of the rock sample test mechanism is shown in the drawings.
[0023] Figure 3 A schematic embodiment of the rock sample test mechanism is shown in the drawings.
[0024] Label explanation:
[0025] 1, rock multi-point clamping device; 10, frame shell; 11, hydraulic cylinder; 12, sliding block; 2, cutter multi-point abrasion device; 20, rotating motor; 21, wear-resistant rod mounting disc; 210, first convex rib; 211, second convex rib; 22, wear-resistant rod; 212, wear-resistant rod mounting hole; 213, positioning hole; 3, loading feeding device; 30, loading motor; 31, lead screw; 32, moving part; 4, workbench; 40, guide rail; 41, displacement sensor; 5, spraying system; 6, rock sample; 60, grinding groove. DETAILED DESCRIPTION
[0026] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature and not limiting.
[0027] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium.
[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected to form a whole only through the connection structure. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] In the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.
[0030] The present application will be described below with reference to the accompanying drawings.
[0031] The specific scheme adopted is:
[0032] As shown in Figures 1-3 The present application provides a kind of mining cutter wear test mechanism, including rock multi-point clamping device 1, cutter multi-point abrasion device 2;
[0033] The rock multi-point clamping device 1 comprises a frame shell 10 containing a rock sample 6, and hydraulic cylinders 11 are arranged on the lateral and upper and lower sides of the frame shell 10 to realize the clamping of the rock sample 6 in the lateral and upper and lower directions.
[0034] The tool multi-point abrasion device 2 comprises a rotating motor 20 and a wear-resistant rod mounting disc 21, the wear-resistant rod mounting disc 21 is provided with wear-resistant rod mounting holes 212 at different positions in the radial direction, and wear-resistant rods 22 of different materials are arranged in the wear-resistant rod mounting holes 212 to simulate tools, and the rotating motor 20 drives the wear-resistant rod mounting disc 21 to rotate, so that the wear-resistant rods 22 at different positions can contact different parts of the rock sample 6 to conduct wear resistance comparison tests of the wear-resistant rods 22 of different materials on the rock sample 6.
[0035] The above structure allows the same rock sample 6 to be used to conduct wear tests on a plurality of wear-resistant rods 22 (simulating tools) of different materials in one test. This greatly reduces the number of times of replacing the rock sample 6 and the wear-resistant rods 22, thereby significantly improving the test efficiency. Due to the reduction of test preparation and replacement steps, the entire test cycle is shortened, providing more time for the test personnel to analyze and optimize the test results. All wear-resistant rods 22 are tested on the same rock sample 6, eliminating the influence of differences between rock samples on the test results, making the wear performance comparison between the wear-resistant rods 22 of different materials more accurate and reliable, and making it easier to observe and compare the wear of the wear-resistant rods 22 of different materials, thereby more intuitively evaluating their performance. Due to the improvement of test efficiency, the use time of equipment and manpower is reduced, thereby reducing the test cost.
[0036] As a preferred embodiment of the present application, referring to Figure 2 , the surface of the wear-resistant rod mounting disc 21 is provided with first convex ribs 210 and second convex ribs 211 intersecting with each other, the wear-resistant rod mounting holes 212 are arranged in the first convex ribs 210 and the second convex ribs 211, the positioning holes 213 are arranged on the side surfaces of the convex ribs and penetrate the wear-resistant rod mounting holes 212, and the fixing members pass through the positioning holes 213 to abut against the wear-resistant rods 22 to mount the wear-resistant rods 22 on the wear-resistant rod mounting disc 21.
[0037] The wear-resistant rods 22 can be mounted in the wear-resistant rod mounting holes 212 through simple insertion and fixing operations, without complex installation steps or tools, and the cooperation of the positioning holes 213 and the fixing members makes the installation process smoother and reduces the installation time. When the wear-resistant rods 22 need to be replaced, the wear-resistant rods 22 can be easily taken out of the mounting holes by loosening the fixing members. The connection mode between the wear-resistant rods 22 and the mounting disc allows the wear-resistant rods 22 to be replaced after wear, and the first convex ribs 210 and the second convex ribs 211 intersecting with each other not only provide mounting positions for the wear-resistant rods 22, but also enhance the overall structural strength of the mounting disc, so that it can withstand greater torque and wear.
[0038] Further, the wear-resistant rod mounting holes 212 on the first and second ribs 210 and 211 are symmetrically arranged relative to the center of the wear-resistant rod mounting disc 21, and wear-resistant rods 22 of the same material are installed in wear-resistant rod mounting holes 212 with the same rotational circumferential surface, while wear-resistant rods 22 of different materials are distributed on different rotational circumferential surfaces. Referring to Figure 3 For the annular wear groove 60 of the contact part of the wear-resistant rod 22 in different positions, by installing wear-resistant rods 22 of the same material on the same rotational circumferential surface, the tester can more accurately compare whether the wear of these wear-resistant rods 22 remains consistent. Such a design reduces the influence of the quality difference of the wear-resistant rods 22 themselves (such as the slight quality difference that may exist between wear-resistant rods 22 of the same material and the same batch) on the experimental results.
[0039] If the wear-resistant rods 22 on the same rotational circumferential surface show significant wear differences, it may be due to manufacturing quality problems of the wear-resistant rods 22 themselves. This design makes quality control more intuitive and easy to identify. By distributing wear-resistant rods 22 of different materials on different rotational circumferential surfaces, it can be ensured that each variable (i.e., the material of the wear-resistant rod 22) is independent and controllable. The symmetrical arrangement makes it easier for the tester to observe and record the wear of each wear-resistant rod 22, thereby more accurately analyzing the performance differences of wear-resistant rods 22 of different materials.
[0040] As a preferred embodiment of the present application, the rotating motor 20 is a variable frequency motor, which is an electric motor that can adjust its output frequency and speed according to demand. In the mining tool wear test mechanism, the variable frequency motor is used as the power source to drive the rotation of the wear-resistant rod mounting disc 21. By adjusting the output frequency of the variable frequency motor, precise control of the rotational speed of the wear-resistant rod 22 can be achieved. The frequency converter is a key device for adjusting the frequency of the variable frequency motor. It can convert the fixed power frequency into a variable output frequency, thereby achieving the adjustment of the motor speed. Through the frequency converter, the rotational speed of the wear-resistant rod 22 is precisely adjusted to meet the experimental requirements. For the prior art, the present application will not be described in detail.
[0041] According to the experimental requirements, the output frequency of the variable frequency motor is set through the frequency converter, thereby determining the rotational speed of the wear-resistant rod 22. Multiple different rotational speed points can be set to simulate different working conditions that may be encountered in actual mining. By comparing the wear performance of the wear-resistant rod 22 at different rotational speeds, optimization suggestions can be provided for the configuration of tools in actual mining operations, improving mining efficiency and reducing costs.
[0042] As a preferred embodiment of the present application, the loading feeding device 3 is further included, which comprises a loading motor 30, a lead screw 31 and a moving part 32, the rock multi-point clamping device 1 is connected to the moving part 32, and the rotation of the loading motor 30 moves the rock multi-point clamping device 1 towards the wear-resistant rod 22 to apply different axial loading forces to the wear-resistant rod 22, thereby simulating the different pressures borne by the wear-resistant rod 22 in actual working conditions.
[0043] When the loading motor 30 is started, it drives the rotation of the lead screw 31. The rotation of the lead screw 31 moves the moving part 32 along the axis of the lead screw 31. The movement of the moving part 32 moves the rock multi-point clamping device 1 towards the wear-resistant rod 22. When the rock comes into contact with the wear-resistant rod 22, the pressure on the wear-resistant rod 22 will continue to be applied, thereby achieving the axial loading of the wear-resistant rod 22.
[0044] The size of the loading force can be adjusted by controlling the rotation speed and direction of the loading motor 30. By adjusting the control parameters of the loading motor 30, precise control of the loading force can be achieved to simulate the different pressures borne by the wear-resistant rod 22 in actual working conditions.
[0045] Further, referring to Figure 1 Further, the workbench 4 is further included, which is provided with guide rails 40, and the rock multi-point clamping device 1 and the loading feeding device 3 are arranged on the workbench 4. The bottom of the rock multi-point clamping device 1 is provided with a sliding block 12, and the sliding block 12 is connected to the guide rails 40. The workbench 4 is further provided with a displacement sensor 41 to measure the displacement distance of the rock multi-point clamping device 1, mainly by measuring the distance between the moving parts 32.
[0046] The design of the sliding block 12 and the guide rails 40 enables the rock multi-point clamping device 1 to move smoothly and accurately along the guide rails 40. The displacement sensor 41 usually adopts a non-contact measurement method, such as laser ranging, to ensure the accuracy and reliability of the measurement. The data measured by the displacement sensor 41 can be recorded in real time into the control unit of the test system. Real-time recording of displacement data makes the test process more traceable, facilitating subsequent data analysis and processing.
[0047] As a preferred embodiment of the present application, an infrared thermal imager (not shown in the figure) collects the temperature of the wear-resistant rod 22 and records it by a computer terminal to monitor the temperature change of the wear-resistant rod 22 in real time during the test process, and evaluate the wear resistance of the wear-resistant rod 22. The principle of the infrared thermal imager collecting the temperature of the wear-resistant rod 22 and recording it by the computer terminal is mainly based on infrared thermal imaging technology and the relationship between temperature and material wear resistance. During the wear-resistant rod 22 wear test process, the infrared thermal imager collects the temperature distribution of the wear-resistant rod 22 surface in real time, and transmits the data to the computer terminal for recording. By comparing the temperature change of the wear-resistant rod 22 before and after the test, and the temperature change at different time points during the test process, the thermal behavior of the wear-resistant rod 22 during the stress wear process can be analyzed. Combined with the material properties of the wear-resistant rod 22, the test conditions and the temperature change data, the wear resistance of the wear-resistant rod 22 can be evaluated. For example, if the temperature of the wear-resistant rod 22 rises quickly and remains high during the test process, it may indicate that its wear resistance is poor; on the contrary, if the temperature change is small and stable, it may indicate that its wear resistance is good.
[0048] As a preferred embodiment of the present application, it also includes a spraying system 5, which sprays cooling liquid to the wear-resistant rod 22 to simulate the cooling process in actual work. When the test starts, the control system issues an instruction to start the water pump. The water pump extracts the cooling liquid in the water tank and delivers it to the spray head through the pipeline. The spray head sprays the cooling liquid evenly to the surface of the wear-resistant rod 22 to achieve the effect of cooling and dust removal. The spraying system 5 simulates the cooling process in actual work, making the test more close to the real mining situation. This helps to improve the accuracy of the test and more accurately evaluate the wear resistance of the wear-resistant rod 22.
[0049] The parts not described in the present application can be realized by using or referring to the existing technology.
[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A testing mechanism for the wear resistance of mining tools, characterized in that, Including multi-point rock clamping devices and multi-point cutting tool abrasion devices; The multi-point rock clamping device includes a frame housing for accommodating rock samples, and hydraulic cylinders are provided on the sides and top and bottom of the frame housing to achieve clamping of the rock samples in the lateral and vertical directions. The multi-point abrasion device for cutting tools includes a rotating motor and a wear-resistant rod mounting plate. The wear-resistant rod mounting plate has wear-resistant rod mounting holes at different radial positions. Wear-resistant rods of different materials are installed in the wear-resistant rod mounting holes to simulate cutting tools. The rotating motor drives the wear-resistant rod mounting plate to rotate, so that the wear-resistant rods at different positions can contact different parts of the rock sample to conduct a comparative test on the wear resistance of wear-resistant rods of different materials on the rock sample.
2. The testing mechanism for the wear resistance of mining tools according to claim 1, characterized in that, The surface of the wear-resistant rod mounting plate is provided with intersecting first and second ribs. Wear-resistant rod mounting holes are provided on the first and second ribs. Positioning holes are provided on the side of the ribs. The positioning holes pass through the wear-resistant rod mounting holes. The fastener passes through the positioning holes and abuts against the wear-resistant rod to install the wear-resistant rod on the wear-resistant rod mounting plate.
3. The testing mechanism for the wear resistance of mining tools according to claim 2, characterized in that, The wear-resistant rod mounting holes of the first / second convex ribs are symmetrically arranged relative to the center of the wear-resistant rod mounting plate, and wear-resistant rods of the same material are installed in the wear-resistant rod mounting holes with the same rotating circumference.
4. The testing mechanism for the wear resistance of mining tools according to claim 1, characterized in that, The rotating motor is a variable frequency motor. Adjusting the frequency of the variable frequency motor changes the rotation speed of the wear-resistant rod, so as to realize the wear performance test of the wear-resistant rod at different speeds.
5. The testing mechanism for the wear resistance of mining tools according to claim 1, characterized in that, It also includes a loading and feeding device, which includes a loading motor, a lead screw, and a moving part. A rock multi-point clamping device is connected to the moving part. The rotation of the loading motor causes the rock multi-point clamping device to move towards the wear-resistant rod, applying different axial loading forces to the wear-resistant rod, thereby simulating the different pressures that the wear-resistant rod bears in actual working conditions.
6. The testing mechanism for the wear resistance of mining tools according to claim 5, characterized in that, It also includes a worktable with guide rails, a multi-point rock clamping device and a loading feed device located on the worktable, and a slider at the bottom of the multi-point rock clamping device connected to the guide rails.
7. The testing mechanism for the wear resistance of mining tools according to claim 6, characterized in that, The workbench is equipped with a displacement sensor to measure the displacement distance of the multi-point rock clamping device.
8. The testing mechanism for the wear resistance of mining tools according to claim 1, characterized in that, An infrared thermal imager collects the temperature of the wear-resistant rod and records it via a computer terminal to monitor the temperature change of the wear-resistant rod in real time during the test and to evaluate the wear resistance performance of the wear-resistant rod.
9. The testing mechanism for the wear resistance of mining tools according to claim 1, characterized in that, It also includes a spray system that sprays coolant onto the wear-resistant rod to simulate the cooling process during actual operation.