Novel porcelain clay filtering vibrating screen

Abstract

The utility model provides a novel porcelain clay filters vibrating screen, including screen main part, the support mechanism of supporting screen main part, and the drive mechanism of driving screen main part, still include the fine aggregate collection car of the fine material discharge gate below is received, and the positioning mechanism of positioning fine aggregate collection car, in actual processing, fine aggregate collection car moves to the fine material discharge gate below receiving the fine material of screening from the guide rail below screen main part in the direction of movement, first limiting part is stopped in the front of fine aggregate collection car and is limited, avoids fine aggregate collection car to continue advancing, second limiting part is stopped in the back of fine aggregate collection car and is limited, avoids fine aggregate collection car to appear the situation of retreating, first limiting part and second limiting part ensure that fine aggregate collection car is in the accurate position below fine material discharge gate and carries out accurate stable aggregate action, and fine material also can not scatter, ensure that the processing site is neat, therefore, the utility model has the advantages such as ensuring aggregate efficiency and accurate stability.

Description

Technical Field

[0001] This utility model relates to the field of ceramic processing machinery, specifically to a novel vibrating screen for filtering porcelain clay. Background Technology

[0002] Ceramic clay is an essential raw material for ceramic production. Before making clay, the ceramic clay needs to be screened to ensure the fineness and uniformity of its particles. Vibrating screens are typically used for screening ceramic clay. A traditional vibrating screen, such as the one disclosed in Chinese Utility Model Patent CNCN202121324784.5, is a filtering vibrating screen for processing porcelain clay, comprising: a filter chamber; a vibrating chamber connected to the bottom of the filter chamber via a shock-absorbing component; a material-turning mechanism located on one side of the filter chamber, wherein the material-turning mechanism includes a vibrating screen, a reciprocating circulation component, and a sliding component. The vibrating screen is located inside the filter chamber and connected to the sliding component, and the reciprocating circulation component is connected to the vibrating screen for screening the porcelain clay; and a vibration mechanism, wherein a gap is provided inside the vibrating chamber to accommodate the vibration mechanism, which is located within this gap to vibrate the filter chamber. The sliding assembly includes a discharge trough formed on the circumferential surface of the filter chamber. A rotating shaft is located within the discharge trough, and a connecting plate is slidably connected to the circumferential surface of the rotating shaft. The connecting plate is fixedly connected to the circumferential surface of the vibrating screen. An elliptical groove is formed on the side end of the connecting plate, allowing the vibrating screen to move the connecting plate up and down. The rotating shaft is slidably connected within the elliptical groove. The reciprocating circulation component includes a circulation assembly and a drive assembly. The circulation assembly includes a mounting block connected to the circumferential surface of the filter chamber. A sliding groove is formed on the side end of the mounting block, and a connecting rod is slidably connected within the sliding groove. The side end of the connecting rod is connected to the circumferential surface of the vibrating screen. A driven gear is rotatably connected to the side end of the mounting block, and a first support rod is rotatably connected to the side end of the driven gear. The side end of the first support rod is rotatably connected to the side end of the connecting rod. The drive assembly includes a motor mounting bracket fixedly connected to the side end of the mounting block. A drive motor is located on the inner wall of the motor mounting bracket. The output shaft of the drive motor is connected to a driving gear via a coupling, and the driving gear and the driven gear mesh. The vibration damping assembly includes a slide cylinder connected to the top of the vibration chamber, with a slider slidably connected inside the slide cylinder. The side end of the slider is connected to the bottom end of the filter chamber. A return spring is connected to the top of the vibration chamber, with its top end fixedly connected to the bottom end of the filter chamber. The return spring is sleeved on the circumferential surface of the slide cylinder. A discharge hopper is provided at the discharge trough of the filter chamber. The vibration mechanism includes a starting assembly and a lifting assembly. The starting assembly includes a motor support frame connected inside the vibration chamber, with a dual-axis motor connected to its upper end. The lifting assembly includes a turntable connected to the output shaft of the dual-axis motor via a coupling. A second support rod is rotatably connected to the side end of the turntable, and the second support rod is movably hinged to the side end of the filter chamber via a hinge pin.

[0003] However, this utility model patent still has some issues with material collection efficiency and accuracy, and its practicality needs to be improved.

[0004] In view of this, the inventors of this case conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0005] The purpose of this invention is to provide a new type of vibrating screen for filtering porcelain clay that ensures efficient and accurate material collection.

[0006] To achieve the above objectives, this utility model adopts the following technical solution:

[0007] A novel vibrating screen for filtering porcelain clay includes a screen body, a support mechanism for supporting the screen body, and a drive mechanism for driving the screen body. The screen body includes a screen mesh, a feed inlet on one side of the screen mesh, a coarse material outlet on the other side of the screen mesh for coarse material to flow out, and a fine material outlet below the screen mesh for fine material to flow out. It also includes a fine material collection cart receiving the fine material outlet below it, and a positioning mechanism for positioning the fine material collection cart. The positioning mechanism includes a first limiting component blocking the forward direction of the fine material collection cart and a second limiting component blocking the backward direction of the fine material collection cart.

[0008] The support mechanism includes a bracket located below the screen, the bracket having a crossbeam, the crossbeam including a first crossbeam connected to a first limiting component and a second crossbeam connected to a second limiting component; the first limiting component includes a first stop bar and a first locking screw passing through the first stop bar and locking the first stop bar onto the first crossbeam, the first locking screw including a first threaded rod passing through the first stop bar and a first pressure cap pressing down on the first stop bar, the first stop bar having a first through hole through which the first threaded rod passes, the diameter of the first through hole being larger than the diameter of the first threaded rod and smaller than the diameter of the first pressure cap, the first crossbeam forming a first threaded hole that mates with the first threaded rod; the second limiting component includes a second stop bar and a second locking screw passing through the second stop bar and locking the second stop bar onto the second crossbeam, the second locking screw including a second threaded rod passing through the second stop bar and a second pressure cap pressing down on the second stop bar, the second stop bar having a second through hole through which the second locking screw passes, the diameter of the second through hole being larger than the diameter of the second threaded rod and smaller than the diameter of the second pressure cap, the second crossbeam forming a second threaded hole that mates with the second threaded rod.

[0009] Both the first and second pressure caps face outwards.

[0010] The feed inlet has a feed guide plate that gradually slopes downwards along the inlet direction, the coarse material outlet has a discharge guide plate that gradually slopes downwards along the discharge direction, and the fine material outlet has a guide cone with a cross-section that gradually decreases from top to bottom.

[0011] The support mechanism includes a swing mechanism connected between the screen body and the support frame; the swing mechanism includes a first rotating shaft supported at the feed inlet end of the screen body, a second rotating shaft supported at the coarse material outlet end of the screen body, two first swing rods supported at both ends of the first rotating shaft, and two second swing rods supported at both ends of the second rotating shaft; the drive mechanism includes a push-pull rod for pushing and pulling the screen body, a crankshaft for driving the push-pull rod, and a motor for driving the crankshaft to rotate; the push-pull rod is connected to the screen body through a rotating shaft, and the first and second swing rods are both connected to the support frame through rotating shafts; the first rotating shaft, the second rotating shaft, the crankshaft, and the rotating shaft are parallel.

[0012] The crankshaft is connected to the bracket at both ends by bearings, and the motor is mounted on the bracket.

[0013] The fine material collection car is equipped with rollers, and the rollers are equipped with guide rails that extend along the forward and backward direction of the fine material collection car.

[0014] It also includes a coarse material collection car that is attached below the coarse material discharge port.

[0015] The coarse material collection car is equipped with rollers, and the rollers are equipped with guide rails that extend along the forward and backward direction of the coarse material collection car.

[0016] By adopting the above technical solution, the novel vibrating screen for kaolin filtration of this utility model breaks through the traditional structure of vibrating screens. In actual processing, the fine material collection cart moves along the guide rail located below the screen body in the forward direction to receive the screened fine material below the fine material outlet. A first limiting component blocks the fine material collection cart from the front to prevent it from moving forward, and a second limiting component blocks the fine material collection cart from the rear to prevent it from reversing. The first and second limiting components ensure that the fine material collection cart is positioned accurately below the fine material outlet for precise and stable material collection. Compared with existing technologies, the novel vibrating screen for kaolin filtration of this utility model has advantages such as ensuring efficient and precise material collection. Attached Figure Description

[0017] Figure 1 This is a partial three-dimensional structural diagram of the first limiting component of this utility model when it is retracted;

[0018] Figure 2 This is a partial three-dimensional structural diagram of the first limiting component of this utility model when it is retracted;

[0019] Figure 3 This is a side view of the first limiting component of this utility model when it is lowered.

[0020] Figure 4 This is a top view of the first and second limiting components of the present invention when they are lowered.

[0021] Figure 5 This is a side view of the present invention;

[0022] Figure 6 This is a partial cross-sectional view of the present invention;

[0023] Figure 7 This is a top view of the present invention.

[0024] In the picture:

[0025] 1-Screen body, 11-Screen mesh, 12-Feed inlet, 121-Feed guide plate, 13-Coarse material outlet, 131-Outlet guide plate, 14-Fine material outlet, 141-Guide cone inlet, 21-Support, 211-First crossbeam, 212-Second crossbeam, 22-Swing mechanism, 221-First rotating shaft, 222-Second rotating shaft, 223-First swing rod, 224-Second swing rod, 3-Drive mechanism, 31-Push-pull rod, 32-Crankshaft, 33-Motor

[0026] 4-Fine material collection car

[0027] 51-First limiting component, 511-First stop lever, 512-First locking screw, 5121-First lead screw, 5122-First pressure cap, 52-Second limiting component, 521-Second stop lever, 522-Second locking screw, 5221-Second lead screw, 5222-Second pressure cap

[0028] 6-Roller, 7-Guide rail, 8-Coarse material collection car. Detailed Implementation

[0029] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0030] This utility model discloses a novel vibrating screen for filtering porcelain clay, such as... Figure 1-4As shown in the figure, it includes a sieve main body 1, a support mechanism for supporting the sieve main body 1, and a driving mechanism 3 for driving the sieve main body 1; the sieve main body 1 includes a sieve mesh 11, a feed inlet 12 on one side of the sieve mesh 11, a coarse material discharge outlet 13 on the other side of the sieve mesh 11 for the outflow of coarse materials, and a fine material discharge outlet 14 below the sieve mesh 11 for the outflow of fine materials; it also includes a fine material collecting cart 4承接于细料出料口14下方的细料集料车4, and a positioning mechanism for positioning the fine material collecting cart 4; the positioning mechanism includes a first limiting member 51 blocking the forward direction of the fine material collecting cart 4 and a second limiting member 52 blocking the backward direction of the fine material collecting cart 4. During the actual processing, the fine material collecting cart 4 moves from the guide rail 7 below the sieve main body 1 along the forward direction to below the fine material discharge outlet 14 to receive the sieved fine materials. The first limiting member 51 blocks in front of the fine material collecting cart 4 for limiting, preventing the fine material collecting cart 4 from moving forward continuously. The second limiting member 52 blocks behind the fine material collecting cart 4 for limiting, preventing the fine material collecting cart 4 from moving backward. The first limiting member 51 and the second limiting member 52 ensure that the fine material collecting cart 4 is in the accurate position below the fine material discharge outlet 14 for accurate and stable material collecting operation. At the same time, the fine materials will not scatter, ensuring the cleanliness of the processing site. After the material collection is completed, the first limiting member 51 and the second limiting member 52 are opened, allowing the fine material collecting cart 4 to move forward or backward to transport the fine materials to the next process. At the same time, it allows the next fine material collecting cart 4 to smoothly move from the guide rail 7 below the sieve main body 1 along the forward direction to below the fine material discharge outlet 14 to receive the sieved fine materials. The specific structure can be that the lower part of the fine material collecting cart 4 is provided with rollers 6, and the rollers 6 are provided with a guide rail 7 extending along the advancing and retreating direction of the fine material collecting cart 4. The guide rail 7 includes two parallel extending rail monomers. The rail monomer includes a rail main body at the lower part and a limiting protrusion protruding upward, so that the cross-section of the rail monomer is a "convex" shape. At the same time, the roller 6 has a limiting wheel groove that cooperates with the limiting protrusion for limiting, and the limiting wheel groove straddles the limiting protrusion, and the rail main body is fixed to the ground.

[0031] It should be noted that there seems to be an incomplete expression "承接于细料出料口14下方的细料集料车4" in the original Chinese text. I have translated it as accurately as possible based on the context. If this is incorrect, please provide the correct content for a more accurate translation.More preferably, the support mechanism includes a bracket 21 located below the screen 11. The bracket 21 has a crossbeam, which includes a first crossbeam 211 connected to the first limiting member 51 and a second crossbeam 212 connected to the second limiting member 52. The first limiting member 51 includes a first stop bar 511 and a first locking screw 512 passing through the first stop bar 511 and locking the first stop bar 511 onto the first crossbeam 211. The first locking screw 512 includes a first lead screw 5121 passing through the first stop bar 511 and a first pressure cap 5122 pressing down on the first stop bar 511. The first stop bar 511 has a first through hole through which the first lead screw 5121 passes. The diameter of the first through hole is larger than the diameter of the first lead screw 5121 and smaller than the diameter of the first lead screw 5121. The diameter of the pressure cap 5122; the first crossbeam 211 forms a first threaded hole that mates with the first lead screw 5121; the second limiting component 52 includes a second stop 521 and a second locking screw 522 that passes through the second stop 521 and locks the second stop 521 onto the second crossbeam 212; the second locking screw 522 includes a second lead screw 5221 that passes through the second stop 521 and a second pressure cap 5222 that presses against the second stop 521; the second stop 521 has a second through hole through which the second locking screw 522 passes; the diameter of the second through hole is larger than the diameter of the second lead screw 5221 and smaller than the diameter of the second pressure cap 5222; the second crossbeam 212 forms a second threaded hole that mates with the second lead screw 5221.In actual operation, the first limiting component 51 can be rotated by the operator to make the first screw 5121 gradually screw into or out of the first threaded hole on the first crossbeam 211, thereby achieving the effect of pressing or preventing the first stop lever 511 from loosening. For example, when it is necessary to facilitate the entry and exit of the fine material collection vehicle 4 below the fine material outlet 14, the first stop lever 511 can be pulled upwards. The first stop lever 511 can swing freely around the first screw 5121 through the first through hole. When it swings to a suitable height, the first pressing cap 5122 can be operated to gradually tighten the first locking screw 512, pressing and positioning the first stop lever 511 on the first crossbeam 211. When the fine material collection vehicle 4 enters below the fine material outlet 14 and it is necessary to limit the forward direction of the fine material collection vehicle 4, the first pressing cap 5122 can be operated to gradually loosen the first locking screw 512. The first stop lever 511 will fall freely under gravity and block the front of the fine material collection vehicle 4. In the forward direction; the second limiting component 52 can be rotated by the operator to make the second screw 5221 gradually screw into or out of the second threaded hole on the second crossbeam 212, so as to achieve the effect of pressing or preventing the second stop 521 from loosening. For example, when it is necessary to facilitate the entry and exit of the fine material collection vehicle 4 below the fine material outlet 14, the second stop 521 is pulled upward. The second stop 521 can swing freely around the second screw 5221 through the second through hole. When it swings to a suitable height, the second pressure cap 5222 can be operated to gradually tighten the second locking screw 522, pressing and positioning the second stop 521 on the second crossbeam 212. When the fine material collection vehicle 4 enters below the fine material outlet 14 and it is necessary to limit the backward direction of the fine material collection vehicle 4, the second pressure cap 5222 is operated to gradually loosen the second locking screw 522. The second stop 521 falls freely by gravity and blocks the backward direction of the fine material collection vehicle 4. The above operations enable precise positioning of the fine material collection vehicle 4 when receiving fine materials and flexible release when entering and exiting below the fine material outlet 14, ensuring efficient, accurate, stable, flexible, and convenient material collection. Specifically, the first pressure cap 5122 and the second pressure cap 5222 both face outwards, facilitating direct and convenient operation by the operator. To prevent the first locking screw 512 and the second locking screw 522 from loosening after the first stop lever 511 and the second stop lever 521 swing upwards, especially in rainy weather or after prolonged dust accumulation, which could prevent the first locking screw 512 and the second locking screw 522 from effectively clamping the first stop lever 511 and the second stop lever 521, a further specific structure can be provided: a first anti-slip pad is provided between the first stop lever 511 and the first crossbeam 211, and a second anti-slip pad is provided between the second stop lever 521 and the second crossbeam 212. The first anti-slip pad has a first pad hole that fits onto the first lead screw 5121, and the second anti-slip pad has a second pad hole that fits onto the second lead screw 5221. The first and second anti-slip pads can specifically be rubber pads or foamed resin pads to ensure anti-slip effect.

[0032] More preferably, the feed inlet 12 has a feed guide plate 121 that gradually slopes downward along the inlet direction. This structure facilitates the material to be screened to be guided and enter the screen body 1 from the feed inlet 12 for screening. The coarse material outlet 13 has a discharge guide plate 131 that gradually slopes downward along the discharge direction. This structure facilitates the coarse material to be guided and flow out from the coarse material outlet 13 into the coarse material collection cart 8 for collection. The fine material outlet 14 has a guide cone 141 whose cross-section gradually decreases from top to bottom. This structure facilitates the fine material to be guided by the guide cone 141 and fall into the fine material collection cart 4 from the fine material outlet 14 for collection.

[0033] To achieve stable omnidirectional screening action of the vibrating screen, more preferably, the support mechanism includes a swing mechanism 22 connected between the screen body 1 and the support 21. The swing mechanism 22 includes a first rotating shaft 221 supported at the feed inlet 12 end of the screen body 1, a second rotating shaft 222 supported at the coarse material outlet 13 end of the screen body 1, two first swing rods 223 supported at both ends of the first rotating shaft 221, and two second swing rods 224 supported at both ends of the second rotating shaft 222. The drive mechanism 3 includes a push-pull rod 31 for pushing and pulling the screen body 1, a crankshaft 32 for driving the push-pull rod 31, and a motor 33 for driving the crankshaft 32 to rotate. The push-pull rod 31 is connected to the screen body 1 through a rotating shaft, and the first swing rod 223 and the second swing rod 224 are both connected to the support 21 through a rotating shaft. The first rotating shaft 221, the second rotating shaft 222, the crankshaft 32, and the rotating shaft are parallel. In actual operation, the motor 33 drives the crankshaft 32 to rotate. The crankshaft 32 pushes and pulls the push-pull rod 31 to reciprocate, causing the screen body 1 to swing back and forth and up and down in all directions, supported by two first swing rods 223 and two second swing rods 224 at four points of balance. This achieves efficient screening of the screen mesh 11 of the screen body 1, providing a more comprehensive range of motion compared to traditional vibrating screens that only vibrate up and down or move back and forth, ensuring screening efficiency and quality. Specifically, the crankshaft 32 includes a main shaft connected to the output shaft of the motor 33 and a secondary shaft located in the middle of the main shaft and offset from it. The secondary shaft is parallel to the main shaft and can continuously rotate parallel to it, achieving stable push-pull drive of the push-pull rod 31. For stable driving of the motor 33, a more specific structure could be that both ends of the crankshaft 32 are connected to the bracket 21 via bearings, and the motor 33 is mounted on the bracket 21.

[0034] Further preferably, it further includes a coarse material collecting vehicle 8承接于下方的粗料出料口13下方. The coarse material collecting vehicle 8 can承接对物料过筛后产生的粗料进行承接. The specific structure can be that the coarse material collecting vehicle 8 is provided with rollers 6, and the rollers 6 are provided with guide rails 7 extending along the advancing and retreating direction of the coarse material collecting vehicle 8. The coarse material collecting vehicle 8 smoothly advances or retreats along the guide rails 7 to实现粗料的高效收集和转运. The guide rails 7 include two parallel extending rail monomers, and the rail monomer includes a rail main body at the lower part and a limiting convex rising upward, so that the cross-section of the rail monomer is "convex" shaped. At the same time, the roller 6 has a limiting wheel groove that cooperates with the limiting convex for limiting, and the limiting wheel groove straddles on the limiting convex, and the rail main body is fixed to the ground. The specific structure can be that the screen 11 is gradually inclined from top to bottom in the direction from the feed inlet 12 to the coarse material discharge outlet 13, which is convenient for the material to naturally flow in the direction from the feed inlet 12 to the coarse material discharge outlet 13. The inclination angle of the screen 11 relative to the ground can be 3-10°, and it can be set according to the viscosity and flow rate of the material. The guide rail 7 of the fine material collecting vehicle 4 is parallel to the guide rail 7 of the coarse material collecting vehicle 8 and perpendicular to the connecting line direction from the feed inlet 12 to the coarse material discharge outlet 13.

[0035] The product form of the present utility model is not limited to the illustrations and embodiments of this case. Any person who makes appropriate changes or modifications to it with a similar idea shall be regarded as not departing from the patent scope of the present utility model. It should be noted that there are some inaccuracies and unclear parts in the original Chinese text, and the translation has been adjusted as much as possible while maintaining the integrity of the content.

Claims

1. A novel vibrating screen for filtering porcelain clay, comprising a screen body, a support mechanism for supporting the screen body, and a drive mechanism for driving the screen body; the screen body includes a screen mesh, a feed inlet on one side of the screen mesh, a coarse material outlet on the other side of the screen mesh for coarse material to flow out, and a fine material outlet below the screen mesh for fine material to flow out; characterized in that: It also includes a fine material collection vehicle that is supported below the fine material outlet, and a positioning mechanism for positioning the fine material collection vehicle; the positioning mechanism includes a first limiting component that blocks the fine material collection vehicle in the forward direction and a second limiting component that blocks the fine material collection vehicle in the backward direction.

2. The novel vibrating screen for filtering porcelain clay according to claim 1, characterized in that: The support mechanism includes a bracket located below the screen, the bracket having a crossbeam, the crossbeam including a first crossbeam connected to a first limiting component and a second crossbeam connected to a second limiting component; the first limiting component includes a first stop bar and a first locking screw passing through the first stop bar and locking the first stop bar onto the first crossbeam, the first locking screw including a first threaded rod passing through the first stop bar and a first pressure cap pressing down on the first stop bar, the first stop bar having a first through hole through which the first threaded rod passes, the diameter of the first through hole being larger than the diameter of the first threaded rod and smaller than the diameter of the first pressure cap, the first crossbeam forming a first threaded hole that mates with the first threaded rod; the second limiting component includes a second stop bar and a second locking screw passing through the second stop bar and locking the second stop bar onto the second crossbeam, the second locking screw including a second threaded rod passing through the second stop bar and a second pressure cap pressing down on the second stop bar, the second stop bar having a second through hole through which the second locking screw passes, the diameter of the second through hole being larger than the diameter of the second threaded rod and smaller than the diameter of the second pressure cap, the second crossbeam forming a second threaded hole that mates with the second threaded rod.

3. The novel vibrating screen for filtering porcelain clay according to claim 2, characterized in that: Both the first and second pressure caps face outwards.

4. The novel vibrating screen for filtering porcelain clay according to claim 1, characterized in that: The feed inlet has a feed guide plate that gradually slopes downwards along the inlet direction, the coarse material outlet has a discharge guide plate that gradually slopes downwards along the discharge direction, and the fine material outlet has a guide cone with a cross-section that gradually decreases from top to bottom.

5. The novel vibrating screen for filtering porcelain clay according to claim 1, characterized in that: The support mechanism includes a swing mechanism connected between the screen body and the support frame; the swing mechanism includes a first rotating shaft supported at the feed inlet end of the screen body, a second rotating shaft supported at the coarse material outlet end of the screen body, two first swing rods supported at both ends of the first rotating shaft, and two second swing rods supported at both ends of the second rotating shaft; the drive mechanism includes a push-pull rod for pushing and pulling the screen body, a crankshaft for driving the push-pull rod, and a motor for driving the crankshaft to rotate; the push-pull rod is connected to the screen body through a rotating shaft, and the first and second swing rods are both connected to the support frame through rotating shafts; the first rotating shaft, the second rotating shaft, the crankshaft, and the rotating shaft are parallel.

6. The novel vibrating screen for filtering porcelain clay according to claim 5, characterized in that: The crankshaft is connected to the bracket at both ends by bearings, and the motor is mounted on the bracket.

7. The novel vibrating screen for filtering porcelain clay according to any one of claims 1-6, characterized in that: The fine material collection car is equipped with rollers, and the rollers are equipped with guide rails that extend along the forward and backward direction of the fine material collection car.

8. The novel vibrating screen for filtering porcelain clay according to any one of claims 1-6, characterized in that: It also includes a coarse material collection car that is attached below the coarse material discharge port.

9. The novel vibrating screen for filtering porcelain clay according to claim 8, characterized in that: The coarse material collection car is equipped with rollers, and the rollers are equipped with guide rails that extend along the forward and backward direction of the coarse material collection car.

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