A polishing medium dispenser and a road accelerated polishing machine composed of the same

Abstract

The present invention provides a polishing medium applicator and a pavement acceleration polishing machine composed thereof. During a rolling test, uniformity in the dispersion of particulate matter before rolling is difficult to achieve, thereby affecting the accuracy of the test results. The present invention includes a support frame, a full-scale tire, a lifting controller, a mobile test bench, and a polishing medium applicator. The mobile test bench is disposed within the support frame and reciprocates along the length of the support frame. The full-scale tire is disposed on the support frame via the lifting controller. The rolling surface of the full-scale tire is configured to cooperate with the top surface of the mobile test bench. The polishing medium applicator is disposed on the support frame, and the terminal discharge port of the polishing medium applicator is disposed toward the top surface of the mobile test bench.

Description

Technical Field

[0001] The present invention particularly relates to a polishing medium dispenser and a road surface accelerated polishing machine composed of the polishing medium dispenser. Background Art

[0002] Accelerated pavement polishing machines are key equipment for current indoor testing, including traffic safety warnings, durable pavement design, and anti-skid material selection. They effectively simulate the abrasive effects of actual traffic loads on road surfaces in the laboratory. The precise distribution of the polishing medium is crucial to the success of accelerated pavement polishing tests, directly determining the polishing speed and the degree of simulation of actual traffic conditions. Therefore, the polishing medium must be applied uniformly and evenly across the contact interface between the test specimen and the tire to ensure equal friction at every point on the specimen.

[0003] However, there are currently two main methods for spreading media used in pavement accelerated loading polishing tests. One is manual spreading by the experimenter, which has defects such as uneven spreading and inconsistent spreading speed, leading to inconsistent wear levels in different areas of the pavement test piece and inconsistent wear conditions for different test pieces. The other is direct leakage spreading from the spreading box, which has defects such as medium jamming at the material outlet, discontinuous material discharge, aggregate splashing and dust, leading to problems such as medium discontinuity and polishing medium jamming the main shaft of the equipment body. At the same time, through expanded search and comparison, it was found that the current small devices used to control the transmission of single-type sand mainly include conveyor belt devices and counterweight-adjustable material outlet size devices. Conveyor belt devices still require manual placement of single-type sand on the belt, which is prone to problems such as uneven single-type sand spreading. The counterweight-adjustable material outlet size method is prone to problems such as small single-type sand jamming and discontinuous leakage, and the inability to accurately calculate the leakage speed.

[0004] In summary, existing pavement accelerated polishing media spreading systems have the following main problems: Traditional laboratory spreaders are prone to uneven and discontinuous media spreading, while exposed spreader boxes are prone to media splashing. Similar single-type sand conveying systems are also prone to uneven feeding and unstable speeds.

[0005] Based on this background, the present invention fully combines the continuous and stable feeding system, the precise and uniform speed spreading system and the dust-proof material limiting plate and other structures into one, and well realizes the functions of continuous material leakage, stable transmission speed and uniform spreading position. Summary of the Invention

[0006] In order to overcome the defects of the prior art, a polishing medium dispenser and a road surface accelerated polishing machine composed of the same are provided to solve the above problems.

[0007] A polishing medium dispenser includes a first feed barrel, a second feed barrel, and a bottom feed barrel. The first feed barrel and the second feed barrel are arranged vertically side by side. The upper end of the first feed barrel is a feed opening for coarse-diameter particles, the upper end of the second feed barrel is a feed opening for fine-diameter particles, the lower ends of the first feed barrel and the second feed barrel are both connected to the top end of the bottom feed barrel, and the bottom end of the bottom feed barrel is a terminal discharge opening.

[0008] The structure of the first feeding drum is the same as that of the second feeding drum. The first feeding drum includes a main conveying drum, a turnover plate and a screening roller. The main conveying drum is vertically arranged, and the turnover plate and the screening roller are arranged in the main conveying drum from top to bottom.

[0009] The bottom material barrel includes an outer barrel, a conical inner core, an inner sleeve and a bottom ring piece. The conical inner core and the inner sleeve are coaxially arranged in the outer barrel from top to bottom. The bottom ring piece is arranged at the bottom of the outer barrel. A through cavity is formed between the outer wall of the conical inner core and the inner wall of the outer barrel. A storage cavity is formed between the outer wall of the inner sleeve, the inner wall of the outer barrel and the top surface of the bottom ring piece. A strip hole is processed at the bottom of the side wall of the inner sleeve. The storage cavity is connected with the interior of the inner sleeve through the strip hole. The top end of the inner sleeve is connected with the conical inner core. The bottom end of the inner sleeve is a sealing end. The sealing end of the inner sleeve is processed with the terminal discharge port connected with the interior of the inner sleeve.

[0010] As a preferred embodiment: the through cavity is formed by a plurality of upper through single cavities and a lower through annular cavity; the conical inner core comprises an upper conical shell, an equal-diameter sleeve and a lower conical sleeve, the upper end of the upper conical shell is a pointed end, the upper end of the lower conical sleeve is a large-mouth end, the lower end of the lower conical sleeve is a small-mouth end, the lower end of the upper conical shell is connected to the upper end of the equal-diameter sleeve, and the lower end of the equal-diameter sleeve is connected through the upper mouth of the lower conical shell, and the outer walls of the upper conical shell and the equal-diameter sleeve are arranged with a number of fins, an upper through single cavity is formed between the outer wall of the equal-diameter sleeve, the inner wall of the outer tube and each adjacent two fins, a lower through annular cavity is formed between the outer wall of the lower conical sleeve and the inner wall of the outer tube, and each upper through single cavity is connected to the storage cavity through the lower through annular cavity.

[0011] As a preferred solution: the fins include upper fins and lower fins, the upper fins are tightly attached to the outer wall of the upper conical shell, the lower fins are tightly attached to the outer wall of the equal-diameter sleeve, and the lower ends of the upper fins are fixedly connected to the upper ends of the lower fins.

[0012] As a preferred solution, the inner cavity structure of the annular cavity is W-shaped, and the thickness of the W-shaped structure in the cavity decreases from bottom to top.

[0013] As a preferred solution: the outer wall of the lower conical sleeve is processed with multiple spiral grooves or multiple straight grooves.

[0014] As a preferred solution: the outer cylinder includes a large sleeve body, a conical sleeve body and a small sleeve body, and the large sleeve body, the conical sleeve body and the small sleeve body are fixedly connected as a whole from top to bottom, the lower end of the large sleeve body is connected to the large end of the conical sleeve body, and the small end of the conical sleeve body is connected through the upper end of the small sleeve body.

[0015] A road acceleration polishing machine composed of a polishing medium applicator described in specific embodiments one, two, three, four, five or six includes a support frame, a full-scale tire, a lifting controller, a mobile test bench and a polishing medium applicator. The mobile test bench is arranged in the support frame, and the mobile test bench reciprocates along the length direction of the support frame. The full-scale tire is set on the support frame through the lifting controller, and the rolling surface of the full-scale tire is matched with the top surface of the mobile test bench. The polishing medium applicator is set on the support frame, and the terminal discharge port of the polishing medium applicator is arranged toward the top surface of the mobile test bench.

[0016] The beneficial effects of the present invention are:

[0017] First, the present invention achieves precise and uniform distribution of coarse and / or fine materials in a single operation through the coordination of the first and second feed drums and the bottom feed drum, eliminating the need for secondary spreading or uniform distribution by human intervention or other equipment. The coordination of the first and second feed drums, the tilting plate, and the screening rollers in the present invention enables the processes of differentiated feeding, quantitative feeding, and screening. The internal structure of the bottom feed drum enables continuous and uniform material distribution, which improves the accuracy of the present invention's test.

[0018] 2. The structural design of the present invention is reasonable and the material dropping method adopts the method of dispersing, mixing, evenly dispersing and concentrating the outflow of coarse sand, fine sand or mixed sand by cooperating with the first feeding cylinder, the second feeding cylinder, the turning plate, the screening roller and the bottom feeding cylinder, thereby enhancing the uniformity of the coarse sand, fine sand or mixed sand dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the road accelerated polishing machine of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the polishing medium dispenser;

[0021] Figure 3 Schematic diagram of the side structure of the first feeding barrel;

[0022] Figure 4 This is a schematic diagram of the main structure of the bottom barrel;

[0023] Figure 5 This is a schematic diagram of the main cross-sectional structure of the bottom barrel;

[0024] Figure 6 for Figure 5A in the middle is an enlarged structural diagram;

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the conical inner core;

[0026] Figure 8 A schematic diagram of the three-dimensional structure of another structural form of a road acceleration polishing machine;

[0027] Figure 9 This is a schematic diagram of the terminal discharge port viewed from above;

[0028] Figure 10 This is a schematic diagram of the three-dimensional structure of the third structural form of the road acceleration polishing machine;

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the screening roller.

[0030] In the figure: 1-first feeding cylinder; 2-second feeding cylinder; 3-bottom feeding cylinder; 4-main conveying cylinder; 5-turning plate; 6-screening roller; 6-1-roller body; 6-2-frame rope; 7-outer cylinder; 7-1-large sleeve; 7-2-conical sleeve; 7-3-small sleeve; 8-conical inner core; 8-1-upper conical shell; 8-2-equal diameter sleeve; 8-3-lower conical sleeve; 9-inner sleeve; 9-1-upper conical sleeve; 9-2-lower conical sleeve; 10-bottom ring piece; 11-strip hole; 12-fin; 12-1-upper fin; 12-2-lower fin; 13-upper through single cavity; 14-lower through annular cavity; 15-straight groove; 20-terminal discharge port; 30-through cavity; 40-storage cavity; 51-support frame; 52-full-size tire; 53-lifting controller; 54-mobile test bench; 55-polishing medium applicator; 60-feeding barrel; 61-first conveyor belt; 62-second conveyor belt; 63-discharge bottom cover. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0032] Specific implementation method 1: Combination Figures 1 to 11Describe this embodiment. In this embodiment, the polishing medium applicator is a composite barrel structure, specifically including a first feed barrel 1, a second feed barrel 2 and a bottom barrel 3. The first feed barrel 1 and the second feed barrel 2 are two parallel barrels, which can be square barrels. The first feed barrel 1 and the second feed barrel 2 are vertically arranged in parallel. The upper end of the first feed barrel 1 is a coarse particle feed port, and the upper end of the second feed barrel 2 is a fine particle feed port. The first feed barrel 1 is used to fill coarse material, and the second feed barrel 2 is used to fill fine material. The lower end of the first feed barrel 1 and the lower end of the second feed barrel 2 are both connected to the top of the bottom barrel 3. The purpose of setting the bottom barrel 3 is to be able to mix the coarse material and the fine material, so as to form a material for paving the road in the subsequent test process. Different amounts of coarse material and fine material can be filled in according to different test requirements. The bottom end of the bottom barrel 3 is the terminal discharge port 20, and the terminal discharge port 20 is the mixed sand outlet.

[0033] The structure of the first feed barrel 1 is the same as that of the second feed barrel 2. The first feed barrel 1 includes a main conveying barrel 4, a flip plate 5 and a screening roller 6. The main conveying barrel 4 is arranged vertically, and the flip plate 5 and the screening roller 6 are arranged in the main conveying barrel 4 from top to bottom in sequence; the first feed barrel 1 and the second feed barrel 2 are cavity structures with independent loading.

[0034] The flip plate 5 is composed of a square plate body and an upper driving assembly. The square plate body is driven by the driving assembly to perform a flipping action in the first feed barrel 1 or the second feed barrel 2, thereby forming a falling gap of different amounts of coarse or fine materials by cooperating with the inner wall of the first feed barrel 1 or the second feed barrel 2 through different flipping angles.

[0035] The screening roller 6 includes a roller body 6-1, a lower drive assembly, and a plurality of frame ropes 6-2. The roller body 6-1 is disposed in the feed barrel 60. The roller body 6-1 is connected to the lower drive assembly located on the outer wall of the feed barrel 60. The roller body 6-1 rotates under the drive of the lower drive assembly. A plurality of frame ropes 6-2 are disposed on the outer circumferential wall of the roller body 6-1. The frame ropes 6-2 are flexible and hard steel wire ropes. Both ends of the frame ropes 6-2 are fixedly connected to the outer circumferential wall of the roller body 6-1. The outer circumferential wall of the roller body 6-1 and each frame rope 6-2 enclose a triangular frame opening that fits a single type of sand. This is used to sort the single type of sand that comes into contact with the roller body 6-1 when it rolls. The lower end of the feed barrel 60 is connected to the top end of the bottom barrel 3, and the bottom end of the bottom barrel 3 is the terminal discharge port 20.

[0036] The structure of the first feeding drum 1 is the same as that of the second feeding drum 2. The first feeding drum 1 includes a main conveying drum 4, a turnover plate 5 and a screening roller 6. The main conveying drum 4 is vertically arranged, and the turnover plate 5 and the screening roller 6 are arranged in the main conveying drum 4 from top to bottom.

[0037] A top cover is provided at the top of the main conveying cylinder 4 , and the top cover is detachably connected or hinged to the main conveying cylinder 4 for covering the top of the main conveying cylinder 4 .

[0038] The lower drive assembly and the upper drive assembly are both existing drive mechanisms. The lower drive assembly includes a micro motor. The power output shaft of the micro motor is coaxially connected to the roller body 6-1. The roller body 6-1 rotates under the drive of the micro motor.

[0039] The upper drive group includes a transmission shaft and another micro motor. The power output shaft of the other micro motor is connected to the transmission shaft. The transmission shaft is arranged on the square plate and passes through the central axis of the square plate in the length direction or width direction.

[0040] The bottom barrel 3 includes an outer barrel 7, a conical inner core 8, an inner sleeve 9 and a bottom ring piece 10. The conical inner core 8 and the inner sleeve 9 are coaxially arranged in the outer barrel 7 from top to bottom. The bottom ring piece 10 is arranged at the bottom of the outer barrel 7. A through cavity 30 is formed between the outer wall of the conical inner core 8 and the inner wall of the outer barrel 7. A storage cavity 40 is formed between the outer wall of the inner sleeve 9, the inner wall of the outer barrel 7 and the top surface of the bottom ring piece 10. A strip hole 11 is processed at the bottom of the side wall of the inner sleeve 9. The storage cavity 40 is connected with the interior of the inner sleeve 9 through the strip hole 11. The top of the inner sleeve 9 is connected with the conical inner core 8. The bottom end of the inner sleeve 9 is a sealed end. The sealed end of the inner sleeve 9 is processed with the terminal discharge port 20 connected with the interior of the inner sleeve 9.

[0041] In this embodiment, the bottom material barrel 3 composed of the outer barrel 7, the conical inner core 8, the inner sleeve 9 and the bottom ring piece 10 can facilitate the mixed sand formed by mixing the coarse material and the fine material to achieve further mixing effect after passing through the cavity 30 and the storage cavity 40 in sequence, and finally can be discharged through the terminal discharge port 20. The mixed effect of the discharged mixed sand is uniform, and can also form a rectangular paving mixed layer on the mobile test bench 54 through the movement coordination of the mobile test bench 54, which is convenient for the subsequent rolling of the full-size tire 52.

[0042] The polishing medium dispenser of the present invention provides continuous and stable feeding, precise and uniform dispensing of fine sand, coarse sand, or mixed sand, while also offering environmental and safety features such as dust prevention and material aggregation. The flow rates of the coarse sand are 18 ± 3 g / min and 8 ± 2 g / min, respectively.

[0043] Specific embodiment 2: This embodiment is a further limitation of specific embodiment 1. The conical inner core 8 in the bottom barrel 3 can be a static structure or a dynamic structure. When the conical inner core 8 is a dynamic inner core, the outer barrel 7 is a static barrel. The dynamic and static structures of the two are coordinated. A micro motor is provided inside the conical inner core 8 to drive its rotation, which is conducive to generating centrifugal force to evenly disperse the coarse sand, fine sand or mixed sand falling from the first feed barrel 1 and the second feed barrel 2, and provide a favorable structure for uniform distribution from the initial position of receiving the sand.

[0044] Specific embodiment three: This embodiment is a further limitation of specific embodiment one or two, the through cavity 30 is formed by a plurality of upper through single cavities 13 and a lower through annular cavity 14; the conical inner core 8 includes an upper conical shell 8-1, an equal-diameter sleeve 8-2 and a lower conical sleeve 8-3, the upper end of the upper conical shell 8-1 is a pointed end, the upper end of the lower conical sleeve 8-3 is a large-mouth end, the lower end of the lower conical sleeve 8-3 is a small-mouth end, the lower end of the upper conical shell 8-1 is connected to the equal-diameter sleeve 8 -2 is connected, the lower end of the equal-diameter sleeve 8-2 is connected through the upper opening of the lower conical shell 8-3, and the outer walls of the upper conical shell 8-1 and the equal-diameter sleeve 8-2 are arranged with a number of fins 12. An upper through single cavity 13 is formed between the outer wall of the equal-diameter sleeve 8-2, the inner wall of the outer tube 7 and each adjacent two fins 12, and a lower through annular cavity 14 is formed between the outer wall of the lower conical sleeve 8-3 and the inner wall of the outer tube 7. Each upper through single cavity 13 is connected to the storage cavity 40 through the lower through annular cavity 14.

[0045] In this embodiment, the cavity 30 is an annular edge cavity, and its shape is designed to make the mixed sand tend to fall more evenly, avoid local accumulation of excessive mixed sand, and make the final discharge position, that is, the discharge amount of the terminal discharge port 20, uniform and stable, avoid manual secondary uniform paving, and form a discharge form in which the mixed sand falls and is spread naturally without manual intervention. The thickness of the spread mixed sand is determined according to the moving speed of the mobile test bench 54.

[0046] Specific embodiment four: This embodiment is a further limitation of specific embodiments one, two or three. The inner sleeve 9 is a special-shaped sleeve. The inner sleeve 9 includes an upper conical sleeve 9-1, a lower conical sleeve 9-2 and a bottom plate. The large mouth end of the upper conical sleeve 9-1 is connected to the large mouth end of the lower conical sleeve 9-2. The lower conical sleeve 9-2 is a gradually tapered sleeve with its large mouth facing upward and the lower mouth facing downward. The inner diameter gradually changes, presenting a stepped reduction structure. A strip hole 11 and a socket are processed on the sleeve wall of the lower conical sleeve 9-2. The strip hole 11 is arranged above the socket, and the socket is used to plug and cooperate with the bottom ring piece 10. The lower mouth end of the lower conical sleeve 9-2 is integrally connected to the bottom plate, and the terminal discharge port 20 is processed on the bottom plate.

[0047] Specific embodiment five: This embodiment is a further limitation of specific embodiments one, two, three or four. The fin 12 includes an upper fin ray 12-1 and a lower fin ray 12-2. The upper fin ray 12-1 and the lower fin ray 12-2 are both sheets made of hard material. The upper fin ray 12-1 is tightly attached to the outer wall of the upper conical shell 8-1, and the lower fin ray 12-2 is tightly attached to the outer wall of the equal-diameter sleeve 8-2. The lower end of the upper fin ray 12-1 is fixedly connected to the upper end of the lower fin ray 12-2.

[0048] In this embodiment, the fins 12-1 and the lower fins 12-2 tend to be L-shaped strips, the purpose of which is to separate the upper conical shell 8-1 so that when the mixed sand falls from the upper conical shell 8-1, it can be separated by the fins 12 and enter different upper single cavities 13, so that the mixed sand can achieve the effect of directional component, avoid secondary mixing of the mixed sand after being separated when passing through the upper conical shell 8-1, and increase the probability of the mixed sand entering different upper single cavities 13 respectively.

[0049] In this embodiment, the fin 12 is a sheet made of alloy, plastic or other lightweight materials.

[0050] Specific embodiment six: This embodiment is a further limitation of specific embodiments one, two, three, four or five. The inner shape of the lower annular cavity 14 is a side-mounted W-shape, and the inner thickness of the annular cavity 14 is W. The inner thickness W decreases from bottom to top, that is, the distance between the outer wall of the lower conical sleeve 8-3 and the inner wall of the outer cylinder 7 is a variable distance, and the change rule is to decrease from bottom to top along the length direction of the lower conical sleeve 8-3, or to increase from top to bottom. The maximum value of W is 3.5 cm, and the minimum value of W is 1 cm.

[0051] Specific embodiment seven: This embodiment is a further limitation of specific embodiments one, two, three, four, five or six, and the outer wall of the lower conical sleeve 8-3 is processed with multiple spiral grooves or multiple linear grooves 15. The linear grooves 15 are feeding troughs for standardizing the feeding direction of the mixed sand.

[0052] Specific embodiment eight: This embodiment is a further limitation of specific embodiments one, two, three, four, five, six or seven. In this embodiment, the outer cylinder 7 is a multi-diameter long cylinder, specifically including a large sleeve 7-1, a tapered sleeve 7-2 and a small sleeve 7-3. The large sleeve 7-1, the tapered sleeve 7-2 and the small sleeve 7-3 are fixedly connected as a whole from top to bottom. The lower mouth of the large sleeve 7-1 is connected to the large end of the tapered sleeve 7-2, and the small end of the tapered sleeve 7-2 is connected through the upper end of the small sleeve 7-3.

[0053] In this embodiment, an upper single cavity 13 is formed between the outer wall of the equal-diameter sleeve 8 - 2 , the inner wall of the large sleeve 7 - 1 and every two adjacent fins 12 .

[0054] In this embodiment, a lower through annular cavity 14 is formed between the outer wall of the lower conical sleeve 8 - 3 and the inner wall of the conical sleeve body 7 - 2 , and each upper through single cavity 13 is connected to the storage cavity 40 through the lower through annular cavity 14 .

[0055] In this embodiment, a storage cavity 40 is formed between the outer wall of the inner casing 9 , the inner wall of the small casing 7 - 3 and the top surface of the bottom ring piece 10 .

[0056] In this embodiment, the terminal discharge port 20 can also be provided with a sand leveling ruler. The distance between the sand leveling ruler and the test surface is less than 2 mm.

[0057] The specific process of dispensing mixed sand by the polishing medium dispenser 55 of the present invention is as follows:

[0058] According to the test requirements, the coarse sand that has been weighed is put into the first feeding drum 1, and the coarse sand falls onto the flip plate 5 in a horizontal state. Then, the fine sand that has been weighed is put into the second feeding drum 2, and the fine sand falls onto the flip plate 5 in a horizontal state. The flip plates 5 and the screening rollers 6 in the first feeding drum 1 and the second feeding drum 2 are started. The coarse sand in the first feeding drum 1 falls onto the screening roller 6 under the flip action of the flip plate 5. Through the rolling of the screening roller 6, the triangular ring buckle formed between the roller body 6-1 and the frame rope 6-2 further screens the coarse sand, ensuring that the coarse sand continues to slide down along the inner wall of the first feeding drum 1 under the action of gravity, and the coarse sand is screened. The rolling of the roller 6 drives the downward sliding state to be continuous and stable. Similarly, in the falling process of the fine sand in the second feeding barrel 2, the coarse sand and fine sand falling from their respective corresponding screening rollers 6 are gathered and mixed on the top surface of the upper conical shell 8-1. The mixed sand enters the upper single cavity 13 along the outer wall of the upper conical shell 8-1, and then passes through the annular cavity 14 at the bottom for further mixing before entering the storage cavity 40. It is accumulated in the storage cavity 40. Due to the effect of its own weight and the hidden position of the strip hole 11, it is evenly collected into the interior of the inner casing 9, and finally evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9. The discharged mixed material is highly uniform and can fall directly on the test surface.

[0059] In this embodiment, the strip-shaped holes 11 are non-annular holes, and a plurality of strip-shaped holes 11 are formed by spaced apart processing along the circumferential direction of the inner sleeve body 9 .

[0060] Specific implementation method nine: Combination Figures 1 to 11To illustrate this embodiment, this embodiment includes a support frame 51, a full-size tire 52, a lifting controller 53, a mobile test platform 54 and a polishing medium applicator 55. The mobile test platform 54 is arranged in the support frame 51, and the mobile test platform 54 reciprocates along the length direction of the support frame 51. The full-size tire 52 is set on the support frame 51 through the lifting controller 53. The rolling surface of the full-size tire 52 is matched with the top surface of the mobile test platform 54. The polishing medium applicator 55 is set on the support frame 51, and the terminal discharge port 20 of the polishing medium applicator 55 is arranged toward the top surface of the mobile test platform 54.

[0061] In this embodiment, the polishing medium applicator 55 includes a first feed barrel 1, a second feed barrel 2 and a bottom feed barrel 3. The first feed barrel 1 and the second feed barrel 2 are arranged vertically in parallel. The upper end of the first feed barrel 1 is a coarse particle feed port, and the upper end of the second feed barrel 2 is a fine particle feed port. The first feed barrel 1 is used to fill coarse material, and the second feed barrel 2 is used to fill fine material. The lower end of the first feed barrel 1 and the lower end of the second feed barrel 2 are both connected to the top end of the bottom feed barrel 3. The purpose of setting up the bottom feed barrel 3 is to be able to mix the coarse material and the fine material, so as to form a road surface for paving in subsequent tests. Different amounts of coarse material and fine material can be filled in according to different test requirements. The bottom end of the bottom feed barrel 3 is the terminal discharge port 20, and the terminal discharge port 20 is the mixed sand outlet.

[0062] The bottom barrel 3 includes an outer barrel 7, a conical inner core 8, an inner sleeve 9 and a bottom ring piece 10. The conical inner core 8 and the inner sleeve 9 are coaxially arranged in the outer barrel 7 from top to bottom. The bottom ring piece 10 is arranged at the bottom of the outer barrel 7. A through cavity 30 is formed between the outer wall of the conical inner core 8 and the inner wall of the outer barrel 7. A storage cavity 40 is formed between the outer wall of the inner sleeve 9, the inner wall of the outer barrel 7 and the top surface of the bottom ring piece 10. A strip hole 11 is processed at the bottom of the side wall of the inner sleeve 9. The storage cavity 40 is connected with the interior of the inner sleeve 9 through the strip hole 11. The top of the inner sleeve 9 is connected with the conical inner core 8. The bottom end of the inner sleeve 9 is a sealed end. The sealed end of the inner sleeve 9 is processed with the terminal discharge port 20 connected with the interior of the inner sleeve 9.

[0063] The bottom barrel 3 can be connected to the support frame 51 through the first feeding barrel 1 and the second feeding barrel 2 , or the bottom barrel 3 can be directly connected to the support frame 51 through the connecting plate 60 .

[0064] Furthermore, the lower end of the first feed barrel 1 and the lower end of the second feed barrel 2 are connected to the bottom barrel 3. There are two specific connection methods. One is that the outer wall of the lower end of the first feed barrel 1 is tightly attached to the top outer wall of the bottom barrel 3, and the other is that the lower end of the first feed barrel 1 is set toward the conical inner core 8. There is no direct contact between the two, and a gap is set between the two, which is similar to the falling method of the second feed barrel 2.

[0065] The structure of the first feed barrel 1 is the same as that of the second feed barrel 2. The first feed barrel 1 includes a main conveying barrel 4, a flip plate 5 and a screening roller 6. The main conveying barrel 4 is arranged vertically, and the flip plate 5 and the screening roller 6 are arranged in the main conveying barrel 4 from top to bottom in sequence; the first feed barrel 1 and the second feed barrel 2 are cavity structures with independent loading.

[0066] In this embodiment, the bottom material barrel 3 composed of the outer barrel 7, the conical inner core 8, the inner sleeve 9 and the bottom ring piece 10 can facilitate the mixed sand formed by mixing the coarse material and the fine material to achieve further mixing effect after passing through the cavity 30 and the storage cavity 40 in sequence, and finally can be discharged through the terminal discharge port 20. The mixed effect of the discharged mixed sand is uniform, and can also form a rectangular paving mixed layer on the mobile test bench 54 through the movement coordination of the mobile test bench 54, which is convenient for the subsequent rolling of the full-size tire 52.

[0067] Furthermore, the through cavity 30 is formed by a plurality of upper through single cavities 13 and a lower through annular cavity 14 connected to each other; the conical inner core 8 includes an upper conical shell 8-1, an equal-diameter sleeve 8-2 and a lower conical sleeve 8-3, the upper end of the upper conical shell 8-1 is a pointed end, the upper end of the lower conical sleeve 8-3 is a large-mouth end, the lower end of the lower conical sleeve 8-3 is a small-mouth end, the lower end of the upper conical shell 8-1 is connected to the upper end of the equal-diameter sleeve 8-2, and the equal-diameter sleeve The lower end of 8-2 is connected through the upper opening of the lower conical shell 8-3. The outer walls of the upper conical shell 8-1 and the equal-diameter sleeve 8-2 are arranged with a number of fins 12. An upper through single cavity 13 is formed between the outer wall of the equal-diameter sleeve 8-2, the inner wall of the outer cylinder 7, and each two adjacent fins 12. A lower through annular cavity 14 is formed between the outer wall of the lower conical sleeve 8-3 and the inner wall of the outer cylinder 7. Each upper through single cavity 13 is connected to the storage cavity 40 through the lower through annular cavity 14. Among them, the through cavity 30 is an annular edge cavity, and its shape is designed to make the mixed sand tend to fall more evenly, avoid local accumulation of excessive mixed sand, and make the final discharge position, that is, the discharge amount of the terminal discharge port 20, uniform and stable, avoid manual secondary uniform paving, and form a discharge form in which the mixed sand falls and is paved naturally without manual intervention. The thickness of the paved mixed sand is determined according to the moving speed of the mobile test bench 54.

[0068] Furthermore, the fins 12 include upper fins 12-1 and lower fins 12-2. Both the upper fins 12-1 and the lower fins 12-2 are made of a hard material. The upper fins 12-1 are closely attached to the outer wall of the upper conical shell 8-1, and the lower fins 12-2 are closely attached to the outer wall of the equal-diameter sleeve 8-2. The lower ends of the upper fins 12-1 and the upper ends of the lower fins 12-2 are fixedly connected. The fins 12-1 and the lower fins 12-2 are L-shaped strips. The purpose is to separate the upper conical shell 8-1 so that when the mixed sand falls from the upper conical shell 8-1, it can be separated by the fins 12 and enter different upper passage cavities 13. This allows the mixed sand to achieve a directional component effect, avoids secondary mixing of the mixed sand after it is separated when passing through the upper conical shell 8-1, and increases the probability of the mixed sand entering different upper passage cavities 13.

[0069] Furthermore, the outer cylinder 7 includes a large sleeve 7-1, a conical sleeve 7-2 and a small sleeve 7-3, and the large sleeve 7-1, the conical sleeve 7-2 and the small sleeve 7-3 are fixedly connected as a whole from top to bottom, the lower end of the large sleeve 7-1 is connected to the large end of the conical sleeve 7-2, and the small end of the conical sleeve 7-2 is connected through the upper end of the small sleeve 7-3.

[0070] In this embodiment, an upper single cavity 13 is formed between the outer wall of the equal-diameter sleeve 8 - 2 , the inner wall of the large sleeve 7 - 1 and every two adjacent fins 12 .

[0071] In this embodiment, a lower through annular cavity 14 is formed between the outer wall of the lower conical sleeve 8 - 3 and the inner wall of the conical sleeve body 7 - 2 , and each upper through single cavity 13 is connected to the storage cavity 40 through the lower through annular cavity 14 .

[0072] In this embodiment, a storage cavity 40 is formed between the outer wall of the inner casing 9 , the inner wall of the small casing 7 - 3 and the top surface of the bottom ring piece 10 .

[0073] The present invention utilizes the deadweight of a single type of sand in conjunction with the internal structure of the polishing medium applicator, so that the mixed sand is repeatedly separated and converged at multiple positions from top to bottom inside the polishing medium applicator, which is beneficial to the mixing of the mixed sand. At the same time, the discharge position is also conducive to the formation of homogeneous discharge and can achieve multi-position mixing effects. In addition, the discharge position of the terminal discharge port 20 can also improve the uniformity of the mixed sand discharge.

[0074] The present invention is not only applicable to the mixing and uniform discharging process of mixed sands of different proportions, but also applicable to the uniform discharging process of a single type of sand.

[0075] The present invention is a polishing medium dispenser, which has the sand-discharging effect of continuously and stably dispensing fine sand, coarse sand, and mixed sand, and dispensing the sand accurately and uniformly, and at the same time has environmental protection and safety performances such as dust prevention and material aggregation.

[0076] The working process of the road surface accelerated polishing machine in the present invention is as follows:

[0077] According to the test requirements, the coarse sand that has been weighed is put into the first feeding drum 1, and the coarse sand falls onto the flip plate 5 in a horizontal state. Then, the fine sand that has been weighed is put into the second feeding drum 2, and the fine sand falls onto the flip plate 5 in a horizontal state. The flip plates 5 and the screening rollers 6 in the first feeding drum 1 and the second feeding drum 2 are started, and the coarse sand in the first feeding drum 1 falls onto the screening roller 6 under the flip action of the flip plate 5. The coarse sand is further screened by the rolling of the screening roller 6 and the triangular ring buckle formed between the roller body 6-1 and the frame rope 6-2 to ensure that the coarse sand continues to slide down along the inner wall of the first feeding drum 1 under the action of gravity, and the sliding state of the coarse sand is continuously and stably driven by the rolling of the screening roller 6. Similarly, in the falling process of the fine sand in the second feeding drum 2, the coarse sand is respectively screened from the corresponding screening rollers 6 The coarse sand and fine sand that fall down are gathered and mixed on the top surface of the upper conical shell 8-1. The mixed sand enters the upper single cavity 13 along the outer wall of the upper conical shell 8-1, and then passes through the annular cavity 14 at the bottom for further mixing before entering the storage cavity 40. It is accumulated in the storage cavity 40. Due to the effect of its own weight and the hidden position of the strip hole 11, it is evenly gathered into the interior of the inner casing 9, and finally evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9. The discharged mixture is highly uniform and can fall directly on the top surface of the mobile test bench 54. Since the mobile test bench 54 is in a uniform moving state, its moving speed determines the paving length of the mixture. After the mixture is paved, the lifting controller 53 is started to drive the full-size tire 52 to directly roll over the area where the mixture is paved to carry out relevant friction tests.

[0078] The working process of the lifting controller 53, the dynamic full-scale tire 52 and the mobile test platform 54 in the present invention in cooperation with each other is the existing technology.

[0079] Specific embodiment 10: This embodiment is a further limitation of any one of the specific embodiments 1 to 9, such as Figure 9 As shown, the polishing medium applicator has another form. The polishing medium applicator of this structural form includes a feed barrel 60 and a bottom barrel 3. The feed barrel is a cylindrical barrel. A flip plate 5 and a screening roller 6 are provided in the feed barrel 60. The flip plate 5 is composed of a circular plate body and an upper driving assembly. The circular plate body is driven by the driving assembly to perform a flipping action in the feed barrel 60, thereby forming a falling gap of different amounts of coarse or fine materials by cooperating with the inner wall of the feed barrel 60 at different flipping angles.

[0080] The screening roller 6 includes a roller body 6-1, a lower drive assembly, and a plurality of frame ropes 6-2. The roller body 6-1 is disposed in the feed barrel 60. The roller body 6-1 is connected to the lower drive assembly located on the outer wall of the feed barrel 60. The roller body 6-1 rotates under the drive of the lower drive assembly. A plurality of frame ropes 6-2 are disposed on the outer circumferential wall of the roller body 6-1. The frame ropes 6-2 are flexible and hard steel wire ropes. Both ends of the frame ropes 6-2 are fixedly connected to the outer circumferential wall of the roller body 6-1. The outer circumferential wall of the roller body 6-1 and each frame rope 6-2 enclose a triangular frame opening that fits a single type of sand. This is used to sort the single type of sand that comes into contact with the roller body 6-1 when it rolls. The lower end of the feed barrel 60 is connected to the top end of the bottom barrel 3, and the bottom end of the bottom barrel 3 is the terminal discharge port 20.

[0081] The structure of the first feeding drum 1 is the same as that of the second feeding drum 2. The first feeding drum 1 includes a main conveying drum 4, a turnover plate 5 and a screening roller 6. The main conveying drum 4 is vertically arranged, and the turnover plate 5 and the screening roller 6 are arranged in the main conveying drum 4 from top to bottom.

[0082] The lower drive assembly and the upper drive assembly are both existing drive mechanisms. The lower drive assembly includes a micro motor. The power output shaft of the micro motor is coaxially connected to the roller body 6-1. The roller body 6-1 rotates under the drive of the micro motor.

[0083] The upper drive group includes a transmission shaft and another micro motor. The power output shaft of the other micro motor is connected to the transmission shaft. The transmission shaft penetrates the circular plate along the radial direction of the circular plate and passes through the center of the circular plate.

[0084] The bottom barrel 3 includes an outer barrel 7, a conical inner core 8, an inner sleeve 9 and a bottom ring piece 10. The conical inner core 8 and the inner sleeve 9 are coaxially arranged in the outer barrel 7 from top to bottom. The bottom ring piece 10 is arranged at the bottom of the outer barrel 7. A through cavity 30 is formed between the outer wall of the conical inner core 8 and the inner wall of the outer barrel 7. A storage cavity 40 is formed between the outer wall of the inner sleeve 9, the inner wall of the outer barrel 7 and the top surface of the bottom ring piece 10. A strip hole 11 is processed at the bottom of the side wall of the inner sleeve 9. The storage cavity 40 is connected with the interior of the inner sleeve 9 through the strip hole 11. The top of the inner sleeve 9 is connected with the conical inner core 8. The bottom end of the inner sleeve 9 is a sealed end. The terminal discharge port 20 connected with the interior of the inner sleeve 9 is processed at the sealed end of the inner sleeve 9.

[0085] Specific implementation method 11: Combination Figure 1 、 Figure 10 and Figure 11To explain this embodiment, the polishing medium applicator in this embodiment also has a third form. The polishing medium applicator in this embodiment includes a first feed cylinder 1, a second feed cylinder 2, a first conveyor belt 61, a second conveyor belt 62 and a discharge bottom cover 63. The first feed cylinder 1 and the second feed cylinder 2 are arranged vertically in parallel, the upper end of the first feed cylinder 1 is a feed port for coarse-diameter particles, the upper end of the second feed cylinder 2 is a feed port for fine-diameter particles, the discharge bottom cover 63 is arranged at the bottom of the first feed cylinder 1 and the second feed cylinder 2, the lower end of the first feed cylinder 1 and the lower end of the second feed cylinder 2 are respectively provided with the first conveyor belt 61 and the second conveyor belt 62, the single-type sand output end of the first conveyor belt 61 and the single-type sand output end of the second conveyor belt 62 are both above the discharge bottom cover 63, the discharge bottom cover 63 is an inverted conical shell, which can play the role of a dust-proof material limiting plate, and the bottom of the inverted conical shell is processed with a terminal discharge port 20;

[0086] The structure of the first feed drum 1 is the same as that of the second feed drum 2. The first feed drum 1 includes a main conveying drum 4, a flip plate 5 and a screening roller 6. The main conveying drum 4 is arranged vertically, and the flip plate 5 and the screening roller 6 are arranged in the main conveying drum 4 from top to bottom.

[0087] The structures and connection methods not mentioned in this embodiment are the same as those in the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth embodiment.

[0088] Specific embodiment 12: This embodiment is a further limitation of specific embodiments 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, and multiple frame ropes 6-2 are staggered on the outer circumferential wall of the roller body 6-1, thereby realizing a comprehensive screening process of the outer wall of the roller body 6-1.

[0089] Furthermore, compared to existing abrasive conveying devices, the polishing medium dispenser in this embodiment offers the distinct advantages of both flattening the abrasive material and providing edge sand consolidation protection, thereby resolving issues such as uneven distribution of the polishing medium on the specimen surface and instrument jamming caused by the loss of fine sand particles along the conveyor belt edges. The polishing medium dispenser in this embodiment is also equipped with a sand leveling ruler, located in front of the first and second feed barrels 1 and 2 and facing the first and second conveyor belts 61 and 62. This ruler evenly distributes the coarse and fine sand delivered, ensuring uniform and consistent distribution of particles at different locations.

[0090] In this embodiment, a solid material guardrail is also provided, which is 1 cm higher than each conveyor belt and adopts a soft tooth design, which can stabilize the fine sand on the edge without blocking the normal transportation of each conveyor belt.

[0091] The discharge bottom cover 63 in this embodiment adopts a trapezoidal structure arc edge design with an upper edge of 45° and a lower edge of 30°, which can effectively gather the scattered sand. At the same time, the structure can form a drainage attraction under the guidance of the flow rate of the downstream sand particles, thereby absorbing the scattered dust to a limited extent.

[0092] The working process of the road surface accelerated polishing machine in the present invention is as follows:

[0093] According to the test requirements, the coarse sand that has been weighed is put into the first feeding drum 1, and the coarse sand falls onto the turning plate 5 in a horizontal state. Then, the fine sand that has been weighed is put into the second feeding drum 2, and the fine sand falls onto the turning plate 5 in a horizontal state. The turning plates 5 and the screening rollers 6 in the first feeding drum 1 and the second feeding drum 2 are started. The coarse sand in the first feeding drum 1 falls onto the screening roller 6 under the turning action of the turning plate 5. The coarse sand is further screened by the rolling of the screening roller 6 and the triangular ring buckle formed between the roller body 6-1 and the frame rope 6-2 to ensure that the coarse sand is screened under the gravity. Under the action of the first feeding drum 1, the coarse sand continuously slides down along the inner wall of the first feeding drum 1, and the coarse sand slides down stably under the rolling drive of the screening roller 6. Similarly, the fine sand falls from the corresponding screening rollers 6 and the coarse sand and fine sand fall on the first conveyor belt 61 and the second conveyor belt 62 respectively. With the transmission action of the first conveyor belt 61 and the second conveyor belt 62, the coarse sand and the fine sand are finally gathered and mixed at the discharge bottom cover 63, and discharged from the terminal discharge port 20 of the discharge bottom cover 63. The discharged mixture is highly uniform and can directly fall on the top surface of the mobile test bench 54.

[0094] The coarse and fine materials in the present invention are both abrasive media materials, and the specific types include: quartz sand, corundum and other hard materials

[0095] The particle size ranges of the coarse material and the fine material in the present invention are specifically as follows: the particle size range of the ultrafine medium particles is 0.053-0.075 mm, the particle size range of the fine medium particles is 0.09-0.125 mm, and the particle size range of the coarse medium particles is 0.15-0.25 mm.

[0096] The following embodiments are described in conjunction with the beneficial effects of the present invention:

[0097] Example 1: Combination Figures 1 to 7Explain this embodiment. When this embodiment is used for sand powder of a single medium, the particle size of the sand powder is 0.053-0.075mm. After weighing the relevant weight according to the test requirements, the weighed sand powder is fed into the top of the second feeding barrel 2. The screening roller 6 is rotating at a speed of 1 RPM, and the sand powder enters the bottom barrel 3 at a downward flow rate of 2-5 g / min±0.7 g / min. The sand powder entering the bottom barrel 3 is dispersed at the top tip of the upper conical shell 8-1 of the sand powder. The sand powder enters the upper single cavity 13 along the outer wall of the upper conical shell 8-1 at a flow rate of 1-3g / min±0.5 g / min, and then enters the storage cavity 40 after being re-collected at the annular cavity 14 at the bottom. It is accumulated at the storage cavity 40, and due to the effect of its own weight and the concealed position of the strip hole 11, it is evenly collected into the interior of the inner sleeve 9, and finally evenly discharged from the terminal discharge port 20 at the bottom of the inner sleeve 9 at a flow rate of 1-2g / min±0.5 The material is discharged at a flow rate of g / min and can directly fall on the top surface of the mobile test platform 54, and the paving process is completed in conjunction with the moving state of the mobile test platform 54, thereby achieving uniform discharging and delaying the discharging process.

[0098] Example 2: Combination Figures 1 to 7 Explain this embodiment. When this embodiment is used for sand powder of a single medium, the particle size of the sand powder is 0.09-0.125mm. After weighing the relevant weight according to the test requirements, the weighed sand powder is fed from the top of the second feeding barrel 2. The screening roller 6 rotates at a speed of 4 RPM, and the sand powder enters the bottom barrel 3 at a downward flow rate of 8 g / min±1.5 g / min. The sand powder entering the bottom barrel 3 is dispersed at the top tip of the upper conical shell 8-1. The sand powder enters the upper single cavity 13 along the outer wall of the upper conical shell 8-1 at a flow rate of 5-7 g / min±0.5 g / min, and then enters the storage cavity 40 after being re-collected at the annular cavity 14 at the bottom. It is accumulated at the storage cavity 40 and evenly flows into the interior of the inner casing 9 due to the effect of its own weight and the concealed position of the strip hole 11. Finally, it is evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9 at a flow rate of 3-5 g / min±0.5 The material is discharged at a flow rate of g / min and can directly fall on the top surface of the mobile test platform 54, and the paving process is completed in conjunction with the moving state of the mobile test platform 54, thereby achieving uniform discharging and delaying the discharging process.

[0099] Example 3: Combination Figures 1 to 7Explain this embodiment. When this embodiment is used for sand powder of a single medium, the particle size of the sand powder is 0.15-0.25mm. After weighing the relevant weight according to the test requirements, the weighed sand powder is fed into the top of the second feeding barrel 2. The screening roller 6 rotates at a speed of 8RPM, and the sand powder enters the bottom barrel 3 at a downward flow rate of 18 g / min±3 g / min. The sand powder entering the bottom barrel 3 is dispersed at the top tip of the upper conical shell 8-1 of the sand powder. The sand powder enters the upper single cavity 13 along the outer wall of the upper conical shell 8-1 at a flow rate of 14-16g / min±0.5 g / min, and then enters the storage cavity 40 after being re-collected at the annular cavity 14 at the bottom. It is accumulated in the storage cavity 40 and evenly flows into the interior of the inner casing 9 due to the effect of its own weight and the concealed position of the strip hole 11. Finally, it is evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9 at a flow rate of 12-14g / min±0.5 The material is discharged at a flow rate of g / min and can directly fall on the top surface of the mobile test platform 54, and the paving process is completed in conjunction with the moving state of the mobile test platform 54, thereby achieving uniform discharging and delaying the discharging process.

[0100] Example 4: Combination Figures 1 to 7 This embodiment is described. When this embodiment is used for a mixture of coarse sand powder and fine sand powder, the range of the value of the ultrafine medium to the fine medium is 0.053-0.12 mm, and the ratio of the coarse and fine medium or the ratio of the ultrafine to the fine medium is between 2:3 and 3:2. After weighing the relevant weights according to the test requirements, the weighed coarse sand powder is fed from the top of the first feed barrel 1, and the weighed fine sand powder is fed from the top of the second feed barrel 2. The sieve roller 6 rotates at a speed of 2-3 RPM, and the two sand powders respectively enter the bottom barrel 3 at a downward flow rate of 5-7 g / min. The two streams of sand powder entering the bottom barrel 3 are mixed and dispersed at the top tip of the upper conical shell 8-1. The two sand powders are dispersed along the outer wall of the upper conical shell 8-1 at a speed of 4-5 After entering the upper cavity 13 at a flow rate of g / min, the mixture is mixed and collected at the lower annular cavity 14 and then enters the storage cavity 40, where it is accumulated. Due to the effect of its own weight and the concealed position of the strip hole 11, it is evenly collected into the interior of the inner casing 9, and finally evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9 at a flow rate of 2-4g / min. The discharged mixture is highly uniform and can fall directly on the top surface of the mobile test bench 54. The paving process is completed in conjunction with the moving state of the mobile test bench 54, thereby realizing the process of multiple mixing, separation, and re-mixing of the mixture and the process of delayed discharge. The stacking thickness of the mixture is coordinated with the moving speed of the mobile test bench 54, and the accuracy of the above process can reach ±1 g / min.

[0101] Example 5: Combination Figures 1 to 7This embodiment is described. When the particle size range of the coarse sand powder and the fine sand powder used in this embodiment is 0.09-0.25 mm, and the ratio of the coarse and fine media is between 3:5 and 5:3, the relevant weights are weighed according to the test requirements, and the weighed coarse sand powder is fed from the top of the first feed barrel 1, and the weighed fine sand powder is fed from the top of the second feed barrel 2. The screen roller 6 rotates at a speed of 5-7 RPM, and the two sand powders enter the bottom barrel 3 at a downward flow rate of 10-15 g / min. The two streams of sand powder entering the bottom barrel 3 are mixed and dispersed at the top tip of the upper conical shell 8-1. The two sand powders are dispersed along the outer wall of the upper conical shell 8-1 at a speed of 10-12 After entering the upper cavity 13 at a flow rate of g / min, the mixture is mixed and collected at the lower annular cavity 14 and then enters the storage cavity 40, where it is accumulated. Due to the effect of its own weight and the concealed position of the strip hole 11, it is evenly collected into the interior of the inner casing 9, and finally evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9 at a flow rate of 8-10g / min. The discharged mixture is highly uniform and can fall directly on the top surface of the mobile test bench 54. The paving process is completed in conjunction with the moving state of the mobile test bench 54, thereby realizing the process of multiple mixing, separation, and re-mixing of the mixture and the process of delayed discharge. The stacking thickness of the mixture is coordinated with the moving speed of the mobile test bench 54, and the accuracy of the above process can reach ±2g / min.

[0102] Example 6: Combination Figures 1 to 8To illustrate this embodiment, when this embodiment is used for the three mixing situations of ultrafine medium, fine medium and coarse medium, the particle size range of the ultrafine medium, fine medium and coarse medium is 0.053-0.25mm, and the fine: fine: coarse usage ratio is between 1:4:5 and 2:5:3. After weighing the relevant weights according to the test requirements, the weighed ultrafine medium, fine medium and coarse medium are poured into the first feed barrel 1 and / or the second feed barrel 2 respectively, or a third feed barrel is set in parallel with the first feed barrel 1 and the second feed barrel 2. Each feed barrel enters a medium sand powder. The sieve roller 6 rotates at a speed of 6-7 RPM, and the three sand powders enter the bottom barrel 3 at a downward flow rate of 9-11 g / min. The three sand powders entering the bottom barrel 3 are mixed and dispersed at the top tip of the upper conical shell 8-1. The three sand powders are dispersed along the outer wall of the upper conical shell 8-1 at a speed of 7-9 After entering the upper cavity 13 at a flow rate of g / min, the mixture is mixed and collected at the lower annular cavity 14 and then enters the storage cavity 40, where it is accumulated. Due to the effect of its own weight and the concealed position of the strip hole 11, it is evenly collected into the interior of the inner casing 9, and finally evenly discharged from the terminal discharge port 20 at the bottom of the inner casing 9 at a flow rate of 5-7g / min. The discharged mixture is highly uniform and can fall directly on the top surface of the mobile test bench 54. The paving process is completed in conjunction with the moving state of the mobile test bench 54, thereby realizing the process of multiple mixing, separation, and re-mixing of the mixture and the process of delayed discharge. The stacking thickness of the mixture is coordinated with the moving speed of the mobile test bench 54, and the accuracy of the above process can reach ±2g / min.

[0103] Another feeding method in this embodiment is as follows Figure 8 As shown, the ultra-fine medium, fine medium, and coarse medium are placed in the same feed barrel, and the other processing steps are the same as described above.

Claims

1. A polishing medium dispenser, characterized in that: The invention comprises a first feeding barrel (1), a second feeding barrel (2) and a bottom feeding barrel (3), wherein the first feeding barrel (1) and the second feeding barrel (2) are arranged vertically in parallel, the upper end of the first feeding barrel (1) is a feeding port for coarse-diameter particles, the upper end of the second feeding barrel (2) is a feeding port for fine-diameter particles, the lower end of the first feeding barrel (1) and the lower end of the second feeding barrel (2) are both connected to the top end of the bottom feeding barrel (3), and the bottom end of the bottom feeding barrel (3) is a terminal discharge port (20); The structure of the first feeding drum (1) is the same as that of the second feeding drum (2). The first feeding drum (1) comprises a main conveying drum (4), a turnover plate (5) and a screening roller (6). The main conveying drum (4) is arranged vertically, and the turnover plate (5) and the screening roller (6) are arranged in sequence from top to bottom in the main conveying drum (4). The bottom barrel (3) comprises an outer barrel (7), a conical inner core (8), an inner sleeve (9) and a bottom ring (10). The outer barrel (7) is provided with a conical inner core (8) and an inner sleeve (9) coaxially from top to bottom. The bottom ring (10) is provided at the bottom of the outer barrel (7). A through cavity (30) is formed between the outer wall of the conical inner core (8) and the inner wall of the outer barrel (7). The outer wall of the inner sleeve (9), the inner wall of the outer barrel (7) and the bottom ring The top surfaces of the sheets (10) are enclosed to form a storage cavity (40), the bottom of the side wall of the inner sleeve (9) is processed with a strip hole (11), the storage cavity (40) is connected to the interior of the inner sleeve (9) through the strip hole (11), the top of the inner sleeve (9) is connected to the conical inner core (8), the bottom end of the inner sleeve (9) is a sealed end, and the terminal discharge port (20) connected to the interior of the inner sleeve (9) is processed at the sealed end of the inner sleeve (9); The through cavity (30) is formed by a plurality of upper through single cavities (13) and a lower through annular cavity (14) connected to each other; the conical inner core (8) comprises an upper conical shell (8-1), an equal-diameter sleeve (8-2) and a lower conical sleeve (8-3); the upper end of the upper conical shell (8-1) is a pointed end, the upper end of the lower conical sleeve (8-3) is a large-mouth end, and the lower end of the lower conical sleeve (8-3) is a small-mouth end; the lower end of the upper conical shell (8-1) is connected to the upper end of the equal-diameter sleeve (8-2), and the equal-diameter sleeve (8-2) is a small-mouth end. The lower end is connected through the upper opening of the lower conical sleeve (8-3); the outer walls of the upper conical shell (8-1) and the equal-diameter sleeve body (8-2) are provided with a plurality of fins (12); an upper through single cavity (13) is formed between the outer wall of the equal-diameter sleeve body (8-2), the inner wall of the outer cylinder (7), and each adjacent two fins (12); a lower through annular cavity (14) is formed between the outer wall of the lower conical sleeve (8-3) and the inner wall of the outer cylinder (7); each upper through single cavity (13) is connected to the storage cavity (40) through the lower through annular cavity (14).

2. A polishing medium dispenser according to claim 1, characterized in that: The fin (12) comprises an upper wing ray (12-1) and a lower wing ray (12-2), the upper wing ray (12-1) being closely attached to the outer wall of the upper conical shell (8-1), and the lower wing ray (12-2) being closely attached to the outer wall of the equal-diameter sleeve (8-2), and the lower end of the upper wing ray (12-1) being fixedly connected to the upper end of the lower wing ray (12-2).

3. The polishing medium dispenser according to claim 1, characterized in that: The inner cavity structure of the annular cavity (14) is W-shaped, and the thickness of the W-shaped structure in the cavity decreases from bottom to top.

4. The polishing medium dispenser according to claim 1, characterized in that: The outer wall of the lower conical sleeve (8-3) is processed with a plurality of spiral grooves or a plurality of linear grooves (15).

5. The polishing medium dispenser according to claim 1, characterized in that: The outer cylinder (7) comprises a large sleeve (7-1), a tapered sleeve (7-2) and a small sleeve (7-3), wherein the large sleeve (7-1), the tapered sleeve (7-2) and the small sleeve (7-3) are fixedly connected in sequence from top to bottom as a whole, the lower end of the large sleeve (7-1) is connected to the large end of the tapered sleeve (7-2), and the small end of the tapered sleeve (7-2) is connected via the upper end of the small sleeve (7-3).

6. A road surface accelerated polishing machine comprising a polishing medium dispenser according to any one of claims 1 to 5, characterized in that: The invention comprises a support frame (51), a full-size tire (52), a lifting controller (53), a mobile test bench (54) and a polishing medium dispenser (55), wherein the mobile test bench (54) is arranged in the support frame (51), and the mobile test bench (54) reciprocates along the length direction of the support frame (51); the full-size tire (52) is arranged on the support frame (51) through the lifting controller (53); the rolling surface of the full-size tire (52) is matched with the top surface of the mobile test bench (54); the polishing medium dispenser (55) is arranged on the support frame (51), and the terminal discharge port (20) of the polishing medium dispenser (55) is arranged toward the top surface of the mobile test bench (54).

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