Lunar abrasion test mechanism

Abstract

The utility model relates to the field of abrasion test equipment, and discloses a Lunar abrasion test mechanism. The device comprises a bracket, a steel ball screening assembly and a stone vibrating screen, wherein a testing roller is rotationally mounted on the bracket; the steel ball screening assembly comprises a swing tray, an annular partition plate and a swing driving part, the annular partition plate is fixedly arranged in the swing tray, a containing cavity suitable for containing steel balls is formed between the annular partition plate and the inner circumferential wall of the swing tray in a spaced mode, and a plurality of discharging holes only allowing stone to fall off are formed in the swing tray at intervals. The annular partition plate is provided with a notch allowing the steel balls to pass through to enter the containing cavity, and a one-way baffle structure is arranged at the notch and suitable for enabling the steel balls located in the annular partition plate to enter the containing cavity. According to the utility model, steel balls and stones can be automatically separated; the labor intensity of workers is reduced; and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to abrasion test equipment technical field, specifically, relate to a los angeles abrasion test mechanism. BACKGROUND

[0002] The los angeles abrasion testing machine is mainly suitable for testing the wear resistance of stone. During the test, the staff will pour a certain weight of stone into the drum of the los angeles abrasion testing machine, then put a certain number of steel balls, then drive the drum to rotate to make the stone wear under the action of the steel balls. After the test is completed, the staff needs to pour the steel balls and the worn stone from the drum into the tray, then pick up the steel balls from the tray, and then screen the worn stone on the specified mesh screen to measure the weight of the stone before and after the test, and then calculate the wear value.

[0003] The Chinese utility model patent with publication number CN 210742041 U discloses a los angeles abrasion machine, which comprises a screening box, a receiving box, a vibration motor, a push rod, a push plate, a limiting spring, multiple sets of fixed springs, a fixed plate, multiple sets of supporting rods and multiple sets of supporting wheels. A through hole is arranged in the upper half area of the right side wall of the receiving box. The left end of the push rod passes through the through hole and is connected with the push plate. The left and right ends of the limiting spring are respectively connected with the right side wall of the push plate and the right side wall inside the receiving box. The vibration motor is installed at the right end of the push rod. In the above technology, a screening box and a receiving box are arranged at the bottom of the drum to realize automatic screening of the stone. However, the steel balls will fall into the screening box together with the stone, and the workers still need to manually pick out each steel ball one by one, which is inconvenient and needs improvement. UTILITY MODEL CONTENT

[0004] To solve at least one of the above problems, the utility model provides a los angeles abrasion test mechanism, which comprises a support, a steel ball screening assembly and a stone vibrating screen. The support is rotatably installed with a test drum. The steel ball screening assembly is located below the test drum. The stone vibrating screen is located below the steel ball screening assembly. The steel ball screening assembly comprises a swinging tray, an annular partition plate and a swinging drive. The annular partition plate is fixedly arranged inside the swinging tray. A plurality of material falling holes are arranged in the swinging tray. The inner diameter of the material falling hole is larger than the outer diameter of the stone but smaller than the outer diameter of the steel ball. The material falling holes are located inside the annular partition plate. A containing cavity for containing the steel ball is arranged between the annular partition plate and the inner circumferential wall of the swinging tray. The annular partition plate is provided with a gap for the steel ball to enter the containing cavity. A one-way baffle structure is arranged at the gap. The one-way baffle structure is adapted to make the steel ball located in the annular partition plate enter the containing cavity. The swinging drive is connected with the swinging tray to drive the swinging tray to reciprocate.

[0005] Optionally, multiple notches are spaced apart and distributed on both sides of the swing direction of the annular partition. The number of unidirectional baffle structures is consistent with the number of notches and corresponds one-to-one.

[0006] Optionally, the unidirectional baffle structure includes a blocking plate located on the side of the annular partition near the receiving chamber and blocking the notch. One side of the blocking plate is hinged to the annular partition, and the other side abuts against the side of the annular partition near the receiving chamber.

[0007] Optionally, the one-way baffle structure further includes a reset spring, which is disposed in the receiving chamber, and one side of the reset spring abuts against the baffle plate to drive the baffle plate to block the notch.

[0008] Optionally, the one-way baffle structure further includes a mounting block fixedly disposed in the receiving cavity, the mounting block having a slot, and the side of the reset spring away from the baffle plate being inserted into the slot.

[0009] Optionally, the swing drive is a cylinder, the telescopic rod of the cylinder is hinged to the swing tray, the swing tray has a column on the side perpendicular to the cylinder, and the swing tray is rotatably connected to the column.

[0010] Optionally, the stone vibrating screen is provided with a first screening drawer and a second screening drawer, the second screening drawer being located below the first screening drawer, and the first screening drawer having screening holes inside, the inner diameter of which is smaller than the inner diameter of the material discharge hole.

[0011] Optionally, the stone vibrating screen is threadedly connected to a locking element, which is adapted to lock or unlock the sliding of the first screening drawer.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] 1. After the test, the steel balls and stones will fall from the test drum onto the swing tray and be located inside the annular partition. The stones will fall onto the stone vibrating screen through the drop hole for screening. Because the steel balls have good rolling properties and are heavy, they will break through the one-way baffle structure and enter the receiving chamber under the swing action of the swing tray, thus achieving automatic separation from the stones. There is no need for manual screening of the steel balls, which reduces the intensity of manual labor and improves work efficiency.

[0014] 2. After the steel ball enters the receiving chamber, the baffle plate will block the notch under the action of the reset spring. The baffle plate only allows the steel ball to enter the receiving chamber from inside the annular partition, and does not easily allow the steel ball to enter the annular partition from the receiving chamber, thereby improving the stability of the steel ball after screening.

[0015] 3. After passing through the feed inlet, the stone will fall into the first screening drawer and be screened by the vibration of the stone vibrating screen. Stones that meet the requirements will be located in the first screening drawer, while worn powder and stones that do not meet the requirements will fall into the second screening drawer. The operator only needs to pull out the first and second screening drawers to proceed to the next step. The operation is convenient. In addition, the stone is fed from the test drum and screened by the stone vibrating screen at the same time, which improves the work efficiency. Attached Figure Description

[0016] Figure 1 This is a structural diagram showing the combination of the test drum, the steel ball screening assembly, and the stone vibrating screen in this embodiment of the utility model.

[0017] Figure 2 This is a structural diagram of the steel ball screening assembly in an embodiment of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0019] Figure 4 The structure of the stone vibrating screen, the first screening drawer, and the second screening drawer in this embodiment of the utility model is shown.

[0020] Explanation of reference numerals in the attached drawings: 1. Support frame; 11. Test roller; 12. Control panel; 13. Column; 2. Steel ball screening assembly; 21. Swinging tray; 22. Annular partition; 221. Notch; 23. Swinging drive component; 24. Receiving chamber; 25. One-way baffle structure; 26. Blocking plate; 27. Reset spring; 28. Mounting block; 3. Stone vibrating screen; 31. First screening drawer; 32. Second screening drawer; 33. Locking component. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-4 This application will be described in further detail.

[0022] This utility model embodiment provides a Los Angeles abrasion testing apparatus, with reference to... Figure 1, Los Angeles abrasion test institutions include support 1, steel ball screening assembly 2 and stone vibration screen 3. The test roller 11 is rotatably installed on the support 1, a certain number of steel balls and the stone to be tested are put into the test roller 11 for abrasion test. The steel ball screening assembly 2 is located below the test roller 11, and the stone vibration screen 3 is located below the steel ball screening assembly 2. After the test is completed, the steel balls and the stone will fall from the inside of the test roller 11 to the steel ball screening assembly 2, and the steel ball screening assembly 2 will screen the steel balls; and the stone will fall on the stone vibration screen 3 after passing through the steel ball screening assembly 2 for re-screening to screen out the stone with a particle size meeting the specified size.

[0023] Referring to Figure 1 , one end of the test roller 11 in the axial direction is provided with a control console 12, and the control console 12 is connected with the test roller 11 to drive the test roller 11 to rotate. The outer peripheral wall of the test roller 11 is provided with an opening, and a certain number of steel balls and the stone to be tested are put into the test roller 11 through the opening. The opening is detachably provided with a cover plate through the cooperation of a screw and a nut. During the test, the cover plate can shield the opening, so that the stone and the steel balls in the test roller 11 are not easy to fall from the opening. After the test is completed, the cover plate is removed, and the opening is directed downward, so that the steel balls and the stone fall on the steel ball screening assembly 2.

[0024] Referring to Figure 1 With Figure 2 , the steel ball screening assembly 2 includes a swing tray 21, an annular partition plate 22 and a swing driving member 23. The swing tray 21 is connected with the swing driving member 23, and the swing driving member 23 drives the swing tray 21 to reciprocate to form a height difference. The annular partition plate 22 is welded inside the swing tray 21, and the steel balls and the stone falling from the opening will fall inside the annular partition plate 22, and all the stone will fall through the falling hole to the stone vibration screen 3, and the steel balls will stay on the swing tray 21. Among them, the circumferential direction of the annular partition plate 22 is spaced from the inner circumferential wall of the swing tray 21 to form a cavity 24 suitable for accommodating the steel balls. During the swing of the swing tray 21, the steel balls will pass through the annular partition plate 22 into the cavity 24, but the steel balls in the cavity 24 are not easy to re-enter the inside of the annular partition plate 22, thereby preventing the steel balls from occupying the space inside the annular partition plate 22 to interfere with the falling of the stone.

[0025] Referring to Figure 1 With Figure 2Specifically, the size of the inner part of the annular partition plate 22 is larger than the size of the opening on the test roller 11, so that the stone can be accurately dropped inside the annular partition plate 22. The inner part of the swing tray 21 is spaced apart to form a plurality of dropping holes, the inner diameter of the dropping hole is larger than the outer diameter of the stone but smaller than the outer diameter of the steel ball, and the plurality of dropping holes are located inside the annular partition plate 22, so that the stone can smoothly pass through the swing tray 21 and fall on the stone vibrating screen 3. The edge of the swing tray 21 extends upward in the vertical direction, and the height of the edge of the swing tray 21 is higher than the radius of the steel ball, so that the steel ball is not easy to fall off the swing tray 21 after falling on the swing tray 21.

[0026] Referring to Figure 2 With Figure 3 Wherein, the annular partition plate 22 is provided with a gap 221 for the steel ball to pass into the containing cavity 24. A one-way baffle structure 25 is arranged at the gap 221, which is suitable for allowing the steel ball located in the annular partition plate 22 to enter the containing cavity 24; and the steel ball in the containing cavity 24 is not easy to re-enter the inner part of the annular partition plate 22. A plurality of gaps 221 are spaced apart, and the plurality of gaps 221 are distributed on both sides of the swing tray 21 in the height difference swing direction. The number of one-way baffle structures 25 is consistent with and corresponds to the number of gaps 221, thereby improving the efficiency and accuracy of the steel ball entering the containing cavity 24 through the gap 221 during rolling. The following will be described by taking one one-way baffle structure 25 and the corresponding gap 221 as an example.

[0027] The one-way baffle structure 25 includes a blocking plate 26, a reset spring 27, and a mounting block 28. The blocking plate 26 is located on the side of the annular partition plate 22 close to the containing cavity 24 and covers the gap 221. One side of the blocking plate 26 is connected to the annular partition plate 22 through a hinge shaft; the other side abuts against the side of the annular partition plate 22 close to the containing cavity 24, so that the blocking plate 26 cannot rotate into the annular partition plate 22, thereby forming a one-way opening structure. The mounting block 28 is located in the containing cavity 24 and on the hinge side of the blocking plate 26, and the mounting block 28 is welded and fixed with the swing tray 21. The side of the mounting block 28 close to the blocking plate 26 is provided with a slot, and the reset spring 27 is a V-shaped spring. One side of the reset spring 27 is inserted into the slot in an interference fit, and the other side abuts against the side of the blocking plate 26 close to the mounting block 28. The blocking plate 26 always has a tendency to close to cover the gap 221 through the reset spring 27.

[0028] Referring to Figure 2 With Figure 3The rear of the swing tray 21 is fixedly provided with a stand column 13, a hinge shaft is welded on the stand column 13, and the hinge shaft is inserted into the swing tray 21 so that the swing tray 21 can rotate relative to the stand column 13. Preferably, the swing driving member 23 is a gas cylinder, and two gas cylinders are provided as a group of driving sources. In this embodiment, two groups of driving sources are provided, and the two groups of driving sources are respectively located on the two sides of the swing tray 21 perpendicular to the stand column 13, so as to ensure that the swing tray 21 can swing stably. The outer wall of the swing tray 21 is welded with a hinge lug, and the telescopic rod of the gas cylinder is hingedly connected with the hinge lug, so as to drive the swing tray 21 to swing back and forth.

[0029] With reference to Figure 2 With Figure 4 The first screening drawer 31 and the second screening drawer 32 are slidably arranged on the stone vibrating screen 3, the second screening drawer 32 is located below the first screening drawer 31 and communicates with the first screening drawer 31, and the first screening drawer 31 and the second screening drawer 32 are slid out of the stone vibrating screen 3 from the side away from the stand column 13. The stone falls into the first screening drawer 31 after passing through the falling hole, a plurality of screening holes are arranged in the first screening drawer 31, the inner diameter of the screening hole is smaller than the inner diameter of the falling hole, and the inner diameter of the screening hole is smaller than the inner diameter of the stone meeting the particle size requirement, so that the stone vibrating screen 3 can make the stone smaller than the specified particle size fall into the second screening drawer 32 during vibration. After the test is completed, the worker can directly draw out the first screening drawer 31 to perform the next operation on the stone, and the stone waste in the second screening drawer 32 can be directly poured at a specified position after the second screening drawer 32 is drawn out.

[0030] In order to prevent the first screening drawer 31 and the second screening drawer 32 from sliding out of the stone vibrating screen 3 during screening, the stone vibrating screen 3 is further threadedly connected with a locking piece 33. The locking piece 33 is provided with two, and the two locking pieces 33 correspond to the first screening drawer 31 and the second screening drawer 32, respectively. The locking piece 33 corresponding to the first screening drawer 31 is taken as an example for description. The locking piece 33 comprises a threaded column and a limiting long block, the limiting long block is welded to one end of the threaded column, and when the threaded column is threadedly connected with the stone vibrating screen 3, the limiting long block can lock and limit the first screening drawer 31, so that the first screening drawer 31 is not easy to fall off the stone vibrating screen 3. After the test is completed, the limiting long block is only turned by ninety degrees to be unlocked, so that the first screening drawer 31 is slid out.

[0031] The implementation principle of the Los Angeles abrasion test mechanism in the embodiment of the application is as follows: after the test is completed, the steel balls and the stones will fall from the test drum 11 onto the swing tray 21 and be located inside the annular partition plate 22, the swing driving member 23 will drive the swing tray 21 to reciprocate, in this process, the stones will fall into the first screening drawer 31 through the falling holes; and since the steel balls are spherical, the steel balls are more likely to roll after the swing tray 21 tilts, so that the steel balls will be driven by the swing of the swing tray 21 to knock open the one-way baffle structure 25 and enter the containing cavity 24 to realize automatic separation from the stones and not to block the falling holes. After the steel balls enter the containing cavity 24, the blocking plate 26 will block the gap 221 under the action of the reset spring 27, and the blocking plate 26 only allows the steel balls to enter the containing cavity 24 from the inside of the annular partition plate 22, but it is not easy for the steel balls to enter the annular partition plate 22 from the containing cavity 24.

[0032] At the same time, the stones falling in the first screening drawer 31 are screened by the vibration of the stone vibration screen 3, and the stones meeting the regulations will be located in the first screening drawer 31, and the worn powders and the stones not meeting the regulations will fall into the second screening drawer 32, so that the workers only need to pull out the first screening drawer 31 and the second screening drawer 32 to perform the next operation.

[0033] Equivalently, the components included in the “assembly”, “mechanism” and “device” of the present disclosure can also be flexibly combined, that is, they can be produced modularly according to actual conditions, assembled as an independent module, or assembled separately to form a module in the device. The division of the above components in the present disclosure is only one embodiment, for the convenience of reading, and is not a limitation on the protection scope of the present disclosure, as long as the above components are included and the same effect is achieved, it should be understood that it is an equivalent technical solution of the present disclosure.

[0034] In the description of the present disclosure, it should be understood that the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements 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 disclosure.

[0035] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the indicated technical features. Thus, features with a "first", "second" or the like designation can include one or more of such features, either explicitly or implicitly.

[0036] In the present disclosure, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" mean to be connected either fixedly or removably, integrally or as one piece, mechanically or as in electrical connection, directly or through an intermediary medium, either internal or external to the components, unless specifically defined otherwise.

[0037] In the present disclosure, unless specifically defined otherwise, "on", "above" or "under" between a first feature and a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, "on", "above" and "over" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher than the second feature in horizontal height. "Under", "below" and "under" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower than the second feature in horizontal height.

[0038] It should be noted that when an element is referred to as being "fixed", "attached", "connected" or "mounted" to another element, it can be directly on the other element or an intervening element can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or an intervening element can also be present. Further, when an element is referred to as being "fixedly connected" to another element, it can be fixedly connected to the other element or removably connected to the other element, such as by a socket connection, a snap connection, an integrally formed connection, a welding, or the like, which can be realized in the conventional technology and will not be described here.

[0039] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present disclosure.

[0040] The above embodiments only express several implementation manners of the present disclosure, which are described in a more specific and detailed manner, but cannot be understood as limiting the scope of the utility model patent. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the utility model concept of the present disclosure, which all belong to the protection scope of the present disclosure.

Claims

1. A Los Angeles abrasion testing apparatus, characterized in that: The system includes a support frame (1), a steel ball screening assembly (2), and a stone vibrating screen (3). A test roller (11) is rotatably mounted on the support frame (1). The steel ball screening assembly (2) is located below the test roller (11), and the stone vibrating screen (3) is located below the steel ball screening assembly (2). The steel ball screening assembly (2) includes a swing tray (21), an annular partition (22), and a swing drive component (23). The annular partition (22) is fixedly disposed inside the swing tray (21). The swing tray (21) has multiple discharge holes spaced apart inside. The inner diameter of the discharge holes is larger than the outer diameter of the stone but smaller than the outer diameter of the steel ball. Multiple material discharge holes are located inside the annular partition (22). The annular partition (22) and the inner peripheral wall of the swing tray (21) are spaced apart by a receiving chamber (24) suitable for accommodating steel balls. The annular partition (22) is provided with a notch (221) for the steel balls to pass through and enter the receiving chamber (24). A one-way baffle structure (25) is provided at the notch (221). The one-way baffle structure (25) is suitable for allowing the steel balls located in the annular partition (22) to enter the receiving chamber (24). The swing drive (23) is connected to the swing tray (21) to drive the swing tray (21) to swing back and forth.

2. The Los Angeles abrasion test apparatus according to claim 1, characterized in that: The notches (221) are spaced apart and are distributed on both sides of the swing direction of the annular partition (22). The number of unidirectional baffle structures (25) is consistent with the number of notches (221) and corresponds one-to-one.

3. The Los Angeles abrasion test apparatus according to claim 2, characterized in that: The one-way baffle structure (25) includes a baffle plate (26), which is located on the side of the annular partition (22) near the receiving chamber (24) and blocks the notch (221). One side of the baffle plate (26) is hinged to the annular partition (22), and the other side abuts against the side of the annular partition (22) near the receiving chamber (24).

4. The Los Angeles abrasion test apparatus according to claim 3, characterized in that: The one-way baffle structure (25) further includes a reset spring (27), which is disposed in the receiving chamber (24), and one side of the reset spring (27) abuts against the baffle plate (26) to drive the baffle plate (26) to block the notch (221).

5. The Los Angeles abrasion test apparatus according to claim 4, characterized in that: The one-way baffle structure (25) also includes a mounting block (28) fixedly disposed in the receiving chamber (24). The mounting block (28) has a slot, and the reset spring (27) is inserted into the slot on the side away from the baffle (26).

6. The Los Angeles abrasion test apparatus according to claim 1, characterized in that: The swing drive (23) is a cylinder. The telescopic rod of the cylinder is hinged to the swing tray (21). The swing tray (21) has a column (13) on the side perpendicular to the cylinder. The swing tray (21) is rotatably connected to the column (13).

7. The Los Angeles abrasion test apparatus according to any one of claims 1-6, characterized in that: The stone vibrating screen (3) is provided with a first screening drawer (31) and a second screening drawer (32) that slide on it. The second screening drawer (32) is located below the first screening drawer (31). The first screening drawer (31) is provided with screening holes inside. The inner diameter of the screening holes is smaller than the inner diameter of the material discharge holes.

8. The Los Angeles abrasion test apparatus according to claim 7, characterized in that: The stone vibrating screen (3) is threaded with a locking element (33), which is adapted to lock or unlock the sliding of the first screening drawer (31).

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