A testing device for the spiral drum of a coal mining machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MEIKE TEST TECH CO LTD
- Filing Date
- 2022-12-30
- Publication Date
- 2026-05-26
AI Technical Summary
The lack of effective testing equipment for the spiral drum of a coal mining machine in the existing technology results in insufficient testing accuracy, which cannot meet the requirements of standard MT/T321-20-2004.
A testing device for a coal mining machine spiral drum, comprising a positioning component, a test bench, and a measuring component, was designed. It uses axial and radial rulers for precise measurement, and combines a universal square, a laser emitter, and a rotating component to ensure accurate positioning and precise measurement of the tested part.
The rotation center axis of the coal mining machine's spiral drum was aligned with the central axis of the test bench, and the measurement accuracy of axial and radial dimensions reached ±1mm, meeting the standard testing requirements and improving the accuracy and reliability of the test.
Smart Images
Figure CN116294903B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of coal mining machine testing technology, specifically relating to a coal mining machine spiral drum testing device. Background Technology
[0002] Coal mining machines evolved from coal cutters and are one of the main pieces of equipment in fully mechanized mining systems. Coal mining machines operate in harsh environments; malfunctions can lead to the interruption of the entire mining operation, causing significant economic losses. The spiral drum of a coal mining machine refers to a cutting drum with spirally loaded blades, such as... Figure 1 As shown. To ensure the working performance of the coal mining machine, standard MT / T321-20-2004 requires the testing of the machining dimensions of the auger drum. The measurement of the main technical parameters of the auger drum must be performed on a dedicated measuring device. This dedicated drum measuring device should be able to ensure the drum's horizontal swing...
[0003] The measuring device should be stable, reliable, and accurately positioned. The rotation center of the dedicated measuring device should coincide with the rotation center of the spiral drum 5 of the coal mining machine. The measuring device for determining the main dimensions of the drum should have an appropriate range, reliable data, and accurate precision.
[0004] Therefore, there is an urgent need to develop a testing device for the spiral drum of a coal mining machine. Summary of the Invention
[0005] In view of the shortcomings or deficiencies of the prior art, the technical problem to be solved by this application is to provide a testing device for the spiral drum of a coal mining machine.
[0006] To solve the above-mentioned technical problems, this application provides the following technical solution:
[0007] This application proposes a testing device for a coal mining machine spiral drum, comprising: a positioning component, a testing platform, and a measuring component. The positioning component is disposed on the testing platform, and the measuring component is disposed beside the testing platform. The measuring component comprises: an axial ruler, a radial ruler, and a slide. The axial ruler and the radial ruler are connected by the slide, enabling the axial ruler to move horizontally and the radial ruler to move vertically.
[0008] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the measuring component further includes a universal angle ruler, which is mounted on the side of the testing platform via a column.
[0009] Furthermore, the aforementioned coal mining machine spiral drum testing equipment further includes: a right-angle ruler or at least two laser emitters, wherein the right-angle ruler or the laser emitters are disposed on the side of the testing platform.
[0010] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, one right-angled side of the right-angle ruler is parallel to the central axis of the test platform, and the other right-angled side of the right-angle ruler is perpendicular to the central axis of the test platform.
[0011] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the light emitted by the two laser emitters is perpendicular to each other.
[0012] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the testing platform is also equipped with a rotating component, enabling the testing platform to rotate about the central axis.
[0013] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the rotating component includes: a variable frequency motor and a reducer, the variable frequency motor and the reducer being connected, and the reducer being connected to the rotating shaft of the test bench.
[0014] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the positioning component includes: at least two positioning protrusions, at least two limiting grooves, and at least two limiting pins. The two limiting grooves are disposed on the testing platform and symmetrically arranged along the central axis of the testing platform. The two positioning protrusions are respectively disposed on the two limiting grooves, and the two limiting pins are respectively disposed on the two limiting grooves and located between the positioning protrusions and the central axis of the testing platform.
[0015] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the positioning protrusion has an arc-shaped surface structure.
[0016] Furthermore, in the aforementioned coal mining machine spiral drum testing equipment, the accuracy of the axial ruler and / or the radial ruler is ±1mm.
[0017] Compared with the prior art, this application has the following technical effects:
[0018] This application sets the test piece on the test bench using a positioning assembly. An axial and radial gauge are mounted on the side of the test bench via a slide. The axial and radial gauges move horizontally or vertically according to the actual specifications of the test piece to measure the axial and radial dimensions of each cutting tooth. This application has a simple structure. The positioning assembly allows the rotation center axis of the coal mining machine's spiral drum to coincide with the central axis of the test bench, enabling precise measurement of the axial and radial dimensions of the test piece with an accuracy of ±1mm. This effectively implements the testing items in standard MT / T321-20-2004. Attached Figure Description
[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0020] Figure 1 : A cross-sectional view of the test piece in one embodiment of this application;
[0021] Figure 2 : A structural schematic diagram of an embodiment of this application;
[0022] In the diagram: 0. Test piece, 1. Cutting tooth, 2. Through hole, 3. Positioning assembly, 4. Test table, 5. Axial ruler, 6. Radial ruler, 7. Slide, 8. Right angle ruler, and 9. Universal angle ruler. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] This embodiment uses the spiral drum of a coal mining machine as the test piece 0, and its structure is as follows: Figure 1 As shown, the spiral drum of the coal mining machine has cutting teeth 1.
[0025] like Figure 2 As shown in one embodiment of this application, a testing device for a coal mining machine spiral drum includes: a positioning component 3, a testing platform 4, and a measuring component. The positioning component 3 is disposed on the testing platform 4, and the measuring component is disposed on the side of the testing platform 4. The measuring component includes: an axial ruler 5, a radial ruler 6, and a slide 7. The axial ruler 5 and the radial ruler 6 are connected by the slide 7, so that the axial ruler 5 can move in the horizontal direction and the radial ruler 6 can move in the vertical direction.
[0026] In this embodiment, the test piece 0 is positioned on the test bench 4 via the positioning component 3. The axial ruler 5 and radial ruler 6 are positioned beside the test bench 4 via a slide 7. The axial ruler 5 and radial ruler 6 move horizontally or vertically according to the actual specifications of the test piece 0 to measure the axial and radial dimensions of each cutting tooth 1. This embodiment has a simple structure. The positioning component 3 allows the rotation center axis of the coal mining machine's spiral drum to coincide with the central axis of the test bench 4, enabling precise measurement of the axial and radial dimensions of the test piece 0. The accuracy can reach ±1mm, effectively implementing the testing items in standard MT / T321-20-2004.
[0027] Optionally, the measuring range of the axial ruler 5 is 0 to 2.5 m to meet the testing requirements of the existing test piece 0.
[0028] Optionally, the radial ruler 6 has a measuring range of 0 to 1 m to meet the testing requirements of existing test pieces 0.
[0029] Specifically, the accuracy of the axial ruler 5 and / or the radial ruler 6 is ±1mm.
[0030] In this embodiment, the accuracy of both the axial ruler 5 and the radial ruler 6 is ±1mm. Of course, those skilled in the art are motivated to improve the accuracy of the axial ruler 5 and the radial ruler 6 according to actual needs.
[0031] Specifically, the measuring component also includes a universal angle ruler 9, which is mounted on the side of the test platform 4 via a column.
[0032] In this embodiment, the numerical values of the helix angle of the coal mining machine blades and the positioning angle of the tooth seat are measured using a universal angle ruler 9.
[0033] Optionally, the coal mining machine spiral drum testing equipment further includes: a right-angle ruler 8 or at least two laser emitters, wherein the right-angle ruler 8 or the laser emitters are disposed on the side of the test bench 4.
[0034] In this embodiment, the coal mining machine spiral drum testing equipment is also equipped with a structure for determining whether the horizontal position of the tested part 0 on the test platform 4 is horizontal and whether the vertical position is vertical, which can be detected by using a right angle ruler 8 or a laser emitter.
[0035] Specifically, one right-angled side of the right-angle ruler 8 is parallel to the central axis of the test platform 4, and the other right-angled side of the right-angle ruler 8 is perpendicular to the central axis of the test platform 4. This configuration adjusts the position of the test piece 0 on the test platform 4, ensuring the accuracy of the test results.
[0036] Specifically, in another embodiment of this application, two laser emitters are used to calibrate the horizontal and vertical positions of the test piece 0. The light emitted by the two laser emitters is perpendicular to each other, so that the intersection of the light emitted by the two laser emitters falls on the edge of the test piece 0, so as to ensure that the test piece 0 is not skewed and to ensure the accuracy of the test results.
[0037] Specifically, the test bench 4 is also equipped with a rotating component, which allows the test bench 4 to rotate about the central axis, so that the staff can test the cutting teeth 1 at different positions.
[0038] Optionally, the rotating assembly includes a variable frequency motor and a speed reducer, wherein the variable frequency motor and the speed reducer are connected, and the speed reducer is connected to the rotation shaft of the test bench 4.
[0039] In this embodiment, the output shaft of the variable frequency motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the rotation shaft of the test bench 4. By using the variable frequency motor to provide rotational kinetic energy to the test bench 4, the test bench 4 can be stopped at any angle during the 360° rotation process.
[0040] Specifically, the positioning component 3 includes: at least two positioning protrusions, at least two limiting grooves, and at least two limiting pins. The two limiting grooves are disposed on the test platform 4 and symmetrically arranged along the central axis of the test platform 4. The two positioning protrusions are respectively disposed on the two limiting grooves, and the two limiting pins are respectively disposed on the two limiting grooves and located between the positioning protrusions and the central axis of the test platform 4.
[0041] In this embodiment, the number of positioning protrusions, limiting grooves, and limiting pins is set to four each. Those skilled in the art will be motivated to adjust the number of these protrusions accordingly. The four limiting grooves are symmetrically and evenly arranged along the central axis of the test platform 4. The bottoms of the four positioning protrusions are slidably mounted on the four limiting grooves, and the limiting pins are respectively positioned between the positioning protrusions and the central axis of the test platform 4. The four positioning protrusions are respectively connected to the square through-hole 2 in the center of the test piece 0. The four positioning protrusions move away from the central axis of the test platform 4 according to the specific specifications of the test piece 0, until they are unable to move further due to contact with the surface of the through-hole 2 of the test piece 0. The limiting pins are then inserted to complete the fixation of the test piece 0.
[0042] Optionally, the positioning protrusion has an arc surface structure, and the arc surface structure contacts the through hole 2 of the test part 0 in a line contact manner to reduce the degree of wear on the test part 0.
[0043] In this embodiment, the positioning protrusion is cylindrical.
[0044] This application places the test piece 0 on the test bench 4 using a positioning assembly 3. An axial ruler 5 and a radial ruler 6 are positioned beside the test bench 4 via a slide 7. The axial ruler 5 and radial ruler 6 move horizontally or vertically according to the actual specifications of the test piece 0 to measure the axial and radial dimensions of each cutting tooth 1. This application has a simple structure. The positioning assembly 3 allows the rotation center axis of the coal mining machine's spiral drum to coincide with the central axis of the test bench 4, enabling precise measurement of the axial and radial dimensions of the test piece 0 with an accuracy of ±1mm. This effectively implements the testing items in standard MT / T321-20-2004.
[0045] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0047] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0048] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. The preferred embodiments have been described in detail. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the claims of this application.
Claims
1. A testing device for a coal mining machine spiral drum, characterized in that, include: The system includes a positioning component, a test bench, and a measurement component, wherein the positioning component is disposed on the test bench, and the measurement component is disposed on the side of the test bench. The test bench is also equipped with a rotating component, which enables the test bench to rotate about the central axis. The measuring assembly includes an axial ruler, a radial ruler, and a slide. The axial ruler and the radial ruler are connected by the slide, allowing the axial ruler to move horizontally and the radial ruler to move vertically. The measuring components also include: a universal angle ruler, which is mounted on the side of the test platform via a column; It also includes: a right-angle ruler or at least two laser emitters, the right-angle ruler or the laser emitters being disposed on the side of the test stand; One right-angled side of the right-angled ruler is parallel to the central axis of the test platform, and the other right-angled side of the right-angled ruler is perpendicular to the central axis of the test platform. The light emitted by the two laser emitters is perpendicular to each other.
2. The testing equipment for the spiral drum of a coal mining machine according to claim 1, characterized in that, The rotating assembly includes a variable frequency motor and a speed reducer, the variable frequency motor and the speed reducer being connected, and the speed reducer being connected to the rotation shaft of the test bench.
3. The testing equipment for the spiral drum of a coal mining machine according to claim 1, characterized in that, The positioning component includes at least two positioning protrusions, at least two limiting grooves, and at least two limiting pins. The two limiting grooves are disposed on the test platform and symmetrically arranged along the central axis of the test platform. The two positioning protrusions are respectively disposed on the two limiting grooves, and the two limiting pins are respectively disposed on the two limiting grooves and located between the positioning protrusions and the central axis of the test platform.
4. The testing equipment for the spiral drum of a coal mining machine according to claim 3, characterized in that, The positioning protrusion has an arc-shaped surface structure.
5. The testing equipment for the spiral drum of a coal mining machine according to claim 1, characterized in that, The accuracy of the axial ruler and / or the radial ruler is ±1mm.