Coal rock breaking data acquisition test bed
Through the design of the coal rock breaking rock data collection test table, the time domain coupling collection displacement, three -scale force, and image data are realized, the lack of various data collection in existing technologies, and providing original data that supports the analysis of the mechanical analysis of the rock. Essence
Patent Information
- Application Number
- CN202411323032.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-01-28
AI Technical Summary
The prior art lacks a coal rock breaking test device that can collect mechanical data, position data and image data simultaneously, especially in the coupled acquisition in the time domain.
A kind of coal rock breaking rock data acquisition test table is designed, including protective shells, horizontal workbenches, data collection systems, tool systems and sample systems. The data acquisition system implements the coupling collection on the time domain through the image collector, displacement sensor, and three -scale force sensor.
This test table can comprehensively simulate the process of soft rock breaking process, matches the number of parameters of different knives, and achieves a comprehensive analysis of domain coupling collection displacement, three components, and image data, providing original data to support the mechanical analysis of rock breaking mechanisms.
Smart Images
Figure CN119374654A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of rock breaking tests, and in particular relates to a coal rock breaking data acquisition test bench. Background Art
[0002] Rock (especially coal rock) breaking test device is an important device for rock breaking mechanism. Mechanical data, position data and image data during rock breaking are key data for studying rock breaking mechanism. Data collection of tools with different size parameters during rock breaking is also an important part of rock breaking mechanism research. At present, there are few test devices for coal rock crushing data collection, and there is no test device for coupled collection of multiple data. Therefore, a test device is needed that can collect multiple key data at the same time and couple the collection in the time domain. The test device needs to adapt to the requirements of various sizes of tools and different tool combinations. The test device provides displacement drive, measures actual displacement feedback, and synchronizes three-dimensional load and image data to support various analyses. Summary of the invention
[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a coal rock breaking data acquisition test bench.
[0004] The technical solution adopted by the invention is: a coal rock breaking data acquisition test bench, the technical key points of which are: including a protective shell, the protective shell covers the outside of a horizontal workbench, a data acquisition system, a tool system and a sample system, wherein the tool system is connected to the vertically movable tool handle of the frame, and a sample system is arranged under the tool system, and the sample system is connected to the upper surface of the frame to control the displacement of the sample so that the sample position is adapted to the tool system; the data acquisition system includes an image collector connected to the protective shell for collecting rock breaking image data, a displacement sensor connected to the horizontal workbench, and a three-component force sensor connected to the tool system for collecting three-way force for rock breaking, so as to realize coupled acquisition in the time domain.
[0005] Furthermore, the horizontal workbench includes a rock breaking direction track installed on the frame, the servo motor is connected to the reducer fixed on one side of the rock breaking direction track, the output shaft of the reducer is connected to the rock breaking direction screw connected to the rock breaking direction track through a rock breaking direction coupling, the rock breaking direction nut connected to the rock breaking direction screw is connected to the lateral adjustment guide rail through a cross slider and drives the lateral adjustment guide rail to move along the length direction of the rock breaking direction track, the casing of the lateral adjustment servo motor is connected to the lateral adjustment guide rail and connected to the workbench through the lateral adjustment nut on the lateral adjustment screw 14, and the workbench moves along the length square of the lateral adjustment guide rail driven by the lateral adjustment screw.
[0006] Furthermore, the sample system includes a fixture fixing plate installed on a horizontal workbench, and the surface of the fixture fixing plate is connected to two oppositely arranged fixture bases, one of which moves along a slide groove set on the fixture fixing plate to adjust the distance between the two fixture bases to accommodate samples of different sizes; the two oppositely arranged fixture bases are connected by a pull rod, and a threaded adjustment block connected to the pull rod is located between the two fixture bases, and the screw passes through the threaded hole on the threaded adjustment block and is supported on the end surface of the sample for fixing the end surface of the sample.
[0007] Furthermore, a clamp is connected to the clamp base.
[0008] Furthermore, the tool system includes a connecting tool handle, which is connected to the vertically movable tool handle on the frame, a three-component force sensor is connected below the connecting tool handle, and a tool magazine is connected below the three-component force sensor. The rock breaking tool is installed in the tool magazine and the tip of the tool at its lower end passes through the bottom of the tool magazine.
[0009] Furthermore, the tool is connected to the tool magazine via a pin that penetrates the side wall of the tool magazine, and the tool moves along the length direction of the pin to adjust the distance between the two relative tools.
[0010] Furthermore, a cushion block is connected between the two cutting tools.
[0011] The beneficial effects of the present invention are as follows: the present invention provides a coal rock breaking data acquisition test bench, including a protective shell, a horizontal workbench, a data acquisition system, a tool system and a sample system, wherein the tool system is connected to the vertically movable tool handle of the frame, and the sample system is connected to the upper surface of the frame to control the displacement of the sample so that the sample position is adapted to the tool system; the data acquisition realizes coupled acquisition in the time domain. The test bench can comprehensively simulate the soft rock breaking process, match different tool size parameters, and use tools with different size parameters to achieve combined rock breaking, providing support for the analysis and research of the parameterization of rock breaking mechanisms. At the same time, it provides time-domain coupled acquisition of three types of data: displacement, three-component force and image data, maintains data correlation, and provides original data for comprehensive analysis of rock breaking mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a three-dimensional diagram of a coal rock breaking data acquisition test bench of the present invention; Figure 2 It is a three-dimensional diagram of the horizontal workbench of the present invention; Figure 3 It is a cross-sectional view of the rock breaking power direction of the horizontal workbench of the present invention; Figure 4 is a cross-sectional view of the horizontal workbench of the present invention in the lateral position adjustment direction; Figure 5 is an enlarged view of the test position of the present invention; Figure 6 is an enlarged view of the tool system of the present invention; Figure 7 is an enlarged view of the sample system of the present invention; The serial numbers in the figure are as follows: 1-horizontal workbench; 2-protective shell; 3-tool system; 4-sample system; 5-rock breaking servo motor; 6-reducer; 7-rock breaking direction coupling; 8-rock breaking direction lead screw; 9-rock breaking direction nut; 10-cross slider; 11-lateral adjustment guide rail; 12-lateral adjustment servo motor; 13-lateral adjustment coupling; 14-lateral adjustment lead screw; 15-lateral adjustment nut; 16-workbench; 16 -1- rock breaking direction track; 17- displacement sensor body; 18- displacement sensor moving end; 19- vertical moving tool handle; 20- connecting tool handle; 21- three-component force sensor; 22- tool magazine; 23- tool; 24- pad; 25- pin; 26- third fixture; 27- second fixture; 28- first fixture; 29- fixture base; 30- fixture fixing plate; 31- threaded adjustment block; 32- screw; 33- pull rod; 34- specimen. DETAILED DESCRIPTION
[0014] To make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-Figure 7 The present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
[0015] This embodiment adopts a coal rock breaking data acquisition test bench, including a protective shell 2, a horizontal workbench 1, a tool system 3 and a sample system 4, wherein the vertical movable tool handle 19 on the tool system 3 extends out from the top of the protective shell 2, and the other parts are covered in the protective shell 2. In this embodiment, the electrical components required for the CNC drive system are installed on the protective shell 2. The tool system 3 is connected below the vertical movable tool handle 19, and the horizontal workbench 1 is connected to the upper surface of the frame, and the frame is fixed on the ground (the frame structure can be designed by technicians in this field according to the existing technology, and this is not required in this embodiment). The sample system 4 is connected to the upper surface of the horizontal workbench 1. In this embodiment, a camera is installed on the protective shell 2 as an image collector, and the focal length of the camera is concentrated on the contact point between the tool 23 and the coal rock, which is used to collect rock breaking image data at the tip of the tool.
[0016] See also Figure 1The horizontal workbench 1 of this embodiment is installed on the upper surface of the frame. Figure 2-Figure 4 , including a rock-breaking direction track 16-1 installed on a frame, a rock-breaking servo motor 5 arranged on one side of the rock-breaking direction track 16-1 connected to a reducer 6, a housing of the reducer 6 connected to the rock-breaking direction track 16-1, an output shaft of the reducer 6 connected to a rock-breaking direction lead screw 8 connected to the rock-breaking direction track 16-1 through a rock-breaking direction coupling 7, and the rock-breaking direction lead screw 8 moves along the length direction of the rock-breaking direction track 16-1 driven by the reducer 6, providing rock-breaking force for the coal sample in this direction. The rock-breaking direction lead screw 8 is connected to a cross slider 10 through a rock-breaking direction nut 9 connected thereto, and is connected to a lateral adjustment guide rail 11 through the cross slider 10. The lateral adjustment guide rail 11 of this embodiment is arranged perpendicular to the rock-breaking direction track 16-1, providing position adjustment for rock breaking in the vertical direction. The housing of the lateral adjustment servo motor 12 is connected to the lateral adjustment guide rail 11, and the output shaft of the lateral adjustment servo motor 12 is connected to the lateral adjustment screw 14 connected to the lateral adjustment guide rail 11 through the lateral adjustment coupling 13. The lateral adjustment screw 14 is connected to the workbench 16 through the lateral adjustment nut 15 connected thereto. The workbench 16 moves along the length direction of the lateral adjustment screw 14 driven by the lateral adjustment nut 15.
[0017] join Figure 2 The displacement sensor body 17 adopts a wire displacement sensor, which is installed on the rock breaking direction track 16-1. The displacement sensor moving end 18 is fixedly connected to the cross slider 10 to detect the moving distance of the lead screw 8 in the rock breaking direction.
[0018] See also Figure 5 In this embodiment, a vertically movable tool handle 19 is also installed on the frame, and the tool system 3 is connected to the vertically movable tool handle 19. The tool system 3 is composed of Figure 6 The connecting handle 20 is connected to the matching structure formed by the vertically movable handle 19 through the conical surface at the top thereof and fixed by bolts. The connecting handle 20 is connected to the three-component force sensor 21, and the three-component force sensor 21 is connected to the tool magazine 22. Rock-breaking tools 22 of different shapes are installed in the square holes in the tool magazine 22. The tip of the tool 2 passes through the bottom of the tool magazine 22. Pads 24 are arranged between the tools 22. The tools 23 and the pads 24 are connected to the tool magazine 22 by pins 25 passing through the tool magazine 22. The tools 23 can slide along the length direction of the pins 25 to adapt to the thickness of the pads 24.
[0019] See also Figure 7, a sample clamping system 4 is installed on a horizontal workbench 16, a fixture fixing plate 30 is arranged on the workbench 16, and can move along the slideway on the surface of the workbench 16, and is screwed and fixed to the workbench 16 after moving to a suitable position. The surface of the fixture fixing plate 30 is connected to two relatively arranged fixture bases 29, one of which can move along the slideway arranged on the fixture fixing plate 30, and the clamping of samples 34 of different sizes is achieved by changing the distance between the two fixture bases 29. The two relatively arranged fixture bases 29 of this embodiment are connected by a tie rod 33, and the tie rod 33 fixes the fixture base 29 by fixing bolts and adjusting bolts respectively. The first fixture 28, the second fixture 27 and the third fixture 26 are connected to the fixture base 29 in sequence, and the three fixtures are selected and installed according to the different sizes of the sample 34, and are connected to the fixture base 29 by bolts and positioning pins. The threaded adjustment block 31 is connected to the pull rod 33 and is located between the two clamp bases 29. The threaded adjustment block 31 can also move along the slide groove on the clamp fixing plate 30. The screw 32 passes through the threaded hole on the threaded adjustment block 31 and is supported on the end face of the sample 34. The external thread of the screw 32 cooperates with the internal thread of the adjustment block 31. The length of the screw 32 can be adjusted according to the size of the sample 34 to achieve sample tightening.
[0020] In the present embodiment, the working process of a coal rock breaking data acquisition test bench is: sample installation, rock breaking position adjustment, rock breaking depth adjustment, rock breaking, and data reading. In the sample installation process, the sample is placed on the upper surface of the fixture fixing plate 30, and the first fixture 28 or the second fixture 27 or the third fixture 26 or one or more combinations thereof are selected according to the height of the sample to clamp and fix the sample laterally. The clamping force is achieved by the pull rod 33 cooperating with the nuts at both ends of the pull rod 33. The front and rear positioning is achieved by the "L"-shaped short side at the front end of the first fixture 28 or the second fixture 27 or the third fixture 26. The front and rear fixation is applied to the sample by the screw 32 passing through the threaded hole of the threaded adjustment block 31; the rock breaking position adjustment process of the present embodiment is to adjust the sideways The servo motor 12 drives the workbench 16 to move in a horizontal plane in the direction of the T-slot on the workbench 16, so as to realize the position of the tool for breaking the rock. The rock breaking depth adjustment process of this embodiment is the depth adjustment of the tip of the tool 23 below the upper surface of the sample, which is realized by vertically moving the tool handle 19 up and down to drive the entire tool system 4 to move. The rock breaking process is: the servo motor 5 for rock breaking drives the workbench 16 to move in a horizontal plane along the T-slot direction on the workbench 16 through the transmission mechanism. Because the tip of the tool 23 is below the upper surface of the sample, when the sample contacts the tool, it will be squeezed, cut and broken.
[0021] During the test, the operations of various data coupling in the time domain are as follows: after completing the sample installation, rock breaking position adjustment, and rock breaking depth adjustment, the data acquisition system is turned on. At this time, the acquisition sensors of various data are started at the same time, and the joint collection work begins, and then the rock breaking collection process is carried out. When the sample contacts the tool and starts the rock breaking process, the data is recorded in real time. The one-to-one correspondence between position, force, and image can be found through time data.
[0022] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A coal rock breaking data acquisition test bench, characterized in that: It includes a protective shell, which covers the outside of a horizontal workbench, a data acquisition system, a tool system and a sample system, wherein the tool system is connected to a vertically movable tool handle of a frame, and a sample system is arranged below the tool system, and the sample system is connected to the upper surface of the frame to control the displacement of the sample, so that the sample position is adapted to the tool system; the data acquisition system includes an image collector connected to the protective shell for collecting rock breaking image data, a displacement sensor connected to the horizontal workbench, and a three-component force sensor connected to the tool system for collecting three-dimensional force for rock breaking, so as to realize coupled acquisition in the time domain.
2. The coal rock breaking data acquisition test bench according to claim 1 is characterized by: The horizontal workbench includes a rock breaking direction track installed on the frame, the servo motor is connected to the reducer fixed on one side of the rock breaking direction track, the output shaft of the reducer is connected to the rock breaking direction screw connected to the rock breaking direction track through a rock breaking direction coupling, the rock breaking direction nut connected to the rock breaking direction screw is connected to the lateral adjustment guide rail through a cross slider and drives the lateral adjustment guide rail to move along the length direction of the rock breaking direction track, the casing of the lateral adjustment servo motor is connected to the lateral adjustment guide rail and connected to the workbench through the lateral adjustment nut on the lateral adjustment screw 14, and the workbench moves along the length square of the lateral adjustment guide rail driven by the lateral adjustment screw.
3. The coal rock breaking data acquisition test bench according to claim 2 is characterized by: The sample system includes a fixture fixing plate installed on a horizontal workbench, and the surface of the fixture fixing plate is connected to two oppositely arranged fixture bases, one of which moves along a slide groove set on the fixture fixing plate to adjust the distance between the two fixture bases to accommodate samples of different sizes; the two oppositely arranged fixture bases are connected by a pull rod, and a threaded adjustment block connected to the pull rod is located between the two fixture bases. The screw passes through the threaded hole on the threaded adjustment block and is held on the end surface of the sample for fixing the end surface of the sample.
4. The coal rock breaking data acquisition test bench according to claim 3 is characterized by: The clamp is connected to the clamp base.
5. The coal rock breaking data acquisition test bench according to claim 1 is characterized by: The tool system includes a connecting handle, which is connected to a vertically movable handle on a frame, a three-component force sensor is connected below the connecting handle, and a tool magazine is connected below the three-component force sensor. The rock breaking tool is installed in the tool magazine and the tip of the tool at its lower end passes through the bottom of the tool magazine.
6. The coal rock breaking data acquisition test bench according to claim 5 is characterized by: The tool is connected to the tool magazine via a pin that penetrates the side wall of the tool magazine, and the tool moves along the length direction of the pin to adjust the distance between two relative tools.
7. The coal rock breaking data acquisition test bench according to claim 6 is characterized by: A cushion block is connected between the two cutting tools.