Vertical double-roller sand making machine crushing roller structure based on bimetallic composite casting

Abstract

The application relates to the technical field of vertical double-roller sand making machines, and particularly discloses a vertical double-roller sand making machine crushing roller structure based on double-metal composite casting, a support frame is fixedly installed on the upper end surface of a sink base plate, a base frame is fixedly installed at the upper end of the support frame, side plates are fixedly installed at the inner front and rear side edges of the base frame; the sink base plate, the base frame and the upper seat frame double-layer frame are arranged, and the upper and lower symmetrical block roller skin assemblies and the clamping installation structure are matched, so that the core problems of the traditional integrated crushing roller, such as the need of overall replacement, the lack of double-layer roller crushing and poor adaptability, are solved, the first to fourth roller skins are segmented and spliced to form a complete roller surface, single-section wear can be replaced individually, the upper and lower two groups of roller skins are mutually attached to form a double-layer crushing station, two-stage extrusion crushing is completed in single feeding, and sand making capacity is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of vertical twin-roll sand making machine technology, and in particular to the crushing roller structure of a vertical twin-roll sand making machine based on bimetallic composite casting. Background Technology

[0002] Traditional vertical double-roll crushing machines mostly adopt an integrated whole-roll structure for the crushing rollers.

[0003] The existing rollers are cast as a whole, and must be replaced as a whole after local wear. This results in high maintenance costs and long downtime. The rollers also lack an independent clamping and adjustment structure, making them unsuitable for different crushing particle sizes and roller diameter specifications, and thus have poor versatility.

[0004] Meanwhile, the equipment lacks a double-layer crushing layout with upper and lower rollers, resulting in low single-pass crushing efficiency. It also lacks a built-in limiting and tightening structure, causing the roller skin to easily deviate and experience large eccentric vibrations, leading to uneven particle size of the discharged sand and gravel.

[0005] In addition, the transmission lacks buffer protection, sealing and dust prevention, and auxiliary clamping structure. During operation, dust can easily damage the transmission components by entering the bearings. Furthermore, there is no automated adaptation and adjustment mechanism, and the manual disassembly and debugging process is cumbersome, making it difficult to meet the production needs of large-scale continuous sand making and multi-specification material crushing. Summary of the Invention

[0006] The purpose of this invention is to provide a crushing roller structure for a vertical double-roll sand making machine based on bimetallic composite casting, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a crushing roller structure for a vertical double-roller sand making machine based on bimetallic composite casting, including a sinking plate. A support frame is fixedly installed on the upper end surface of the sinking plate, and a base frame is fixedly installed on the upper end of the support frame. Side plates are fixedly installed on the front and rear edges of the base frame. The front and rear side plates are provided with symmetrical clamping plates inside, and mounting plates are attached to the inner circumferential surface of the clamping plates. The inner sides of the two mounting plates are provided with roller skin assemblies. The roller skin assembly includes a first roller skin, a second roller skin, a third roller skin, and a fourth roller skin. The first roller skin, the second roller skin, the third roller skin, and the fourth roller skin are in a state of mutual contact at their adjacent ends. The upper base frame is fixedly installed on the upper end of the base frame. The upper base frame is provided with a protective shell inside. The protective shell is also provided with a first roller skin, a second roller skin, a third roller skin and a fourth roller skin with the same structure. The outer circumferential surfaces of the upper and lower first roller skins, second roller skins, third roller skins, and fourth roller skins are in a state of contact.

[0008] Preferably, a material box frame is fixedly installed on the right side of the upper end face of the substrate near the edge, and two discharge ports are opened on the left side of the material box frame. A symmetrical support frame is fixedly installed on the upper end face of the substrate, and a first motor is fixedly installed on the left edge of the support frame. A conveyor belt is rotatably installed on the circumference of the output shaft of the first motor.

[0009] Preferably, a speed reducer is rotatably mounted on the other end of the inner side of the conveyor belt, the lower end of the speed reducer is fixedly mounted on the upper edge of the support frame, and an output shaft is rotatably mounted on the inner side of the speed reducer, with one end of the output shaft extending to the inner side of the adjacent side plate.

[0010] Preferably, a feed chute is fixedly installed at the right end of the base frame, a bearing rod is rotatably installed on the inner side of one of the side plates, an adjusting rod is rotatably installed on the inner circumferential surface of the bearing rod and the adjacent output shaft, a slide is rotatably installed at one end of the inner side of the adjusting rod, a clamping plate is provided on the outer side of the slide, and a cross-shaped slide groove is opened on the outer side of the clamping plate, and the slide is slidably installed inside the adjacent slide groove.

[0011] Preferably, a servo motor is fixedly installed at the center of the outer side of the clamping plate. A drive gear is fixedly installed on the output shaft of the servo motor inside the clamping plate. A worm gear is meshed on the outer side of the drive gear inside the clamping plate. A worm is meshed on the worm gear. The worm extends into the interior of an adjacent slide groove and is threadedly rotatably connected to an adjacent slide table.

[0012] Preferably, a liquid coupler is installed at the rear end of the output shaft of the servo motor, and a chuck is fixedly installed at the rear end of the liquid coupler. An air cushion ring is fixedly installed on the outer side of the rear end of the clamping plate near the edge. Engaging blocks are evenly fixedly installed in a ring array on the outer edge of the clamping plate. An installation plate is provided on the outer side of the engagement block. A corresponding engagement groove is opened on the outer side of the installation plate. The engagement groove and the engagement block are slidably connected.

[0013] Preferably, a mounting slot is provided at the center of the outer side of the mounting plate, a chuck is rotatably mounted inside the mounting slot, threaded rods are fixedly mounted at the center of the inner sides of two adjacent mounting plates, connecting rods are rotatably mounted on the outer circumferential surfaces of the two adjacent threaded rods, a mounting sleeve is fixedly mounted on the outer side of the connecting rod, a rotating gear is rotatably mounted on the outer side of the mounting sleeve, and a turntable is rotatably mounted on the outer side of two adjacent rotating gears.

[0014] Preferably, a sliding groove rod is uniformly fixedly installed in a ring array on the outer circumferential surface of the mounting sleeve, a guide rod is slidably installed inside the sliding groove rod, the inner side of the guide rod engages with the outer side of the adjacent turntable, and a limiting arc rod is fixedly installed on the outer side of the guide rod.

[0015] Preferably, a first mounting block is fixedly installed at one end of the first roller skin, a second roller skin is provided on the outer side of the first mounting block, a second mounting block is fixedly installed at one end of the second roller skin, a third roller skin is provided on the outer side of the second mounting block, a third mounting block is provided on the other end of the inner side of the third roller skin, and a fourth roller skin is fixedly installed at one end of the outer side of the third mounting block. Annular grooves are formed on the inner central circumferential surfaces of the first roller skin, second roller skin, third roller skin, and fourth roller skin, and limit arc rods are provided inside the annular grooves.

[0016] Preferably, a protective shell is rotatably mounted on the upper left side of the side plate, and a telescopic pump is rotatably mounted on the lower right front and rear edges of the protective shell. The lower ends of the telescopic pumps are rotatably mounted on the upper right edge of the adjacent side plate. An upper frame is provided on the upper outer side of the protective shell, and a compression airbag is provided inside the upper frame. The lower end of the compression airbag is in contact with the upper right surface of the protective shell.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention solves the core problems of traditional integrated crushing rollers, such as the need for complete replacement, lack of double-layer crushing, and poor adaptability, by setting up a double-layer frame consisting of a base plate, a base frame, and an upper frame, combined with symmetrically segmented roller skin assemblies and a clamping installation structure. The first to fourth roller skins are segmented and spliced ​​to form a complete roller surface, and individual worn sections can be replaced separately. The upper and lower sets of roller skins are closely fitted to form a double-layer crushing station, completing two stages of extrusion crushing in a single feeding, which greatly improves sand production capacity. The layered layout of the frame, combined with the clamping plates on both sides, enables quick clamping of the roller body. It can adapt to various roller diameters without the need for customized tooling, thus optimizing crushing capacity and maintenance convenience from the main structure.

[0018] 2. This invention adds a servo motor, worm gear, and slide adjustment mechanism to the segmented double-layer roller body, further optimizing the roller body clamping and adaptability and adding an automatic centering and tightening effect. The servo-driven worm gear synchronously moves the surrounding slides, automatically adjusting the clamping inner diameter to adapt to different specifications of roller skins. The outer meshing block of the mounting plate precisely engages with the clamping plate, and the internal limiting arc rod evenly supports and positions the roller skin from the inner annular groove, ensuring no eccentric shaking during operation. This solves the problems of cumbersome clamping and debugging and poor adaptability of traditional roller bodies, and eliminates crushing vibration by relying on multi-point uniform limiting, ensuring uniform and stable particle size of the output sand and gravel.

[0019] 3. This invention solves the problems of rigid transmission without buffering and easy motor burnout due to material jamming in traditional equipment by setting up a first motor, conveyor belt, reducer, and liquid coupling transmission system. The motor power is reduced and speed regulated by the conveyor belt and reducer to adapt to crushing conditions of materials with different hardness; the rear liquid coupler forms a flexible buffer transmission, automatically unloading force in case of material jamming and overload, avoiding instantaneous impact damage to the motor and gears. The transmission structure is linked and matched with the clamping and roller components, and the crushing force can be adjusted according to the material characteristics, while reducing the frequency of equipment failure, extending the service life of core transmission components such as motors and gears, and reducing the frequency of downtime for maintenance.

[0020] 4. This invention integrates a complete structure including a double-layer segmented crushing roller, automatic clamping and centering, flexible buffer transmission, telescopic protective shell, and compressed air bladder for auxiliary clamping, synergistically solving the comprehensive problems of traditional equipment such as easy dust intrusion, cumbersome disassembly and assembly, and poor crushing stability. The telescopic pump drives the opening and closing of the protective shell, and the compressed air bladder clamps the roller body to suppress vibration; the air cushion ring isolates dust and protects the meshing transmission parts. The entire set of equipment has a high degree of automation and adjustment, with partial replacement of the segmented roller skin and modular disassembly and assembly of the frame, simultaneously improving crushing efficiency, operational stability, and maintenance economy, making it suitable for large-scale continuous sand production of various ores. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the deposition plate and feed box frame structure of the present invention; Figure 3 This is a schematic diagram of the support frame and base frame structure of the present invention; Figure 4 This is a schematic diagram of the first motor and reducer structure of the present invention; Figure 5 This is a schematic diagram of the base frame and upper frame structure of the present invention; Figure 6 This is a schematic diagram of the base frame and feed trough structure of the present invention; Figure 7 This is a schematic diagram of the side plate and roller skin assembly structure of the present invention; Figure 8 This is a schematic diagram of the mounting plate and connecting rod structure of the present invention; Figure 9 This is a schematic diagram of the clamping plate and mounting plate structure of the present invention; Figure 10 This is a schematic diagram of the output shaft and adjusting rod structure of the present invention; Figure 11 This is a schematic diagram of the chuck structure of the present invention; Figure 12 This is a schematic diagram of the structure of the first roller skin, second roller skin, third roller skin, and fourth roller skin of the present invention; Figure 13 This is a structural diagram of the limiting arc-shaped rod of the present invention; Figure 14 This is a schematic diagram of the mounting carbon and limiting arc-shaped rod structure of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Base plate; 2. Material box frame; 201. Discharge port; 3. Support frame; 301. First motor; 302. Conveyor belt; 303. Reducer; 304. Output shaft; 4. Base frame; 401. Feed chute; 402. Side plate; 403. Bearing rod; 5. Adjusting rod; 501. Slide table; 502. Clamping plate; 503. Slide groove; 504. Servo motor; 505. Drive gear 506. Worm gear; 507. Worm; 508. Air cushion ring; 509. Meshing block; 510. Liquid coupler; 511. Chuck; 6. Mounting plate; 601. Meshing groove; 602. Threaded rod; 603. Connecting rod; 604. Mounting sleeve; 605. Rotating gear; 606. Turntable; 607. Sliding rod; 608. Guide rod; 609. Limiting arc rod; 610. Mounting slot; 7. Roller skin assembly; 701. First roller skin; 702. First mounting block; 703. Second roller skin; 704. Second mounting block; 705. Third roller skin; 706. Fourth roller skin; 707. Third mounting block; 708. Annular groove; 8. Upper frame; 9. Protective shell; 10. Telescopic pump; 11. Compressed air bag. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 14 The present invention provides a technical solution: The crushing roller structure of the vertical twin-roll sand making machine based on bimetallic composite casting includes a sinking plate 1. A material box frame 2 is fixedly installed on the top right side of the sinking plate 1 near the edge. A material box is set on the top of the material box frame 2. An inclined plate is fixedly installed on the left side of the material box. Two discharge ports 201 are opened on the left side of the material box. The discharge ports 201 and the inclined plate are in a through connection state. Figure 1 and Figure 2 As shown.

[0026] Therefore, during use, the material can be evenly fed from the discharge port 201 along the inclined plate to the crushing gap of the two corresponding crushing rollers, avoiding the problems of material accumulation and poor feeding, and effectively ensuring the continuous stability of the crushing operation.

[0027] Two support frames 3 are fixedly installed on the top left side of the substrate 1. A first motor 301 is fixedly installed on the top left edge of the two support frames 3. Multiple conveyor belts 302 are rotatably mounted on the circumferential surface of the output shaft of the first motor 301. The other end of the multiple conveyor belts 302 is rotatably connected to the circumferential surface of the input shaft on the outside of the reducer 303. Figure 3 and Figure 4 As shown.

[0028] Therefore, during use, the power output by the first motor 301 can be stably transmitted to the reducer 303 through the conveyor belt 302. After adjustment by the reducer 303, the output speed and torque are adapted to the crushing operation requirements. This not only allows for the adjustment of crushing parameters for materials with different hardness and particle size, thus improving the adaptability of the device, but also provides overload buffer protection for the conveyor belt 302. When a foreign object with greater hardness gets stuck in the subsequent structure, the conveyor belt 302 can slip, preventing the first motor 301 from burning out due to overload. This effectively improves the safety of equipment operation and reduces the cost of fault repair.

[0029] The reducer 303 has an inner fixed connection to the output shaft 304. Then, a base frame 4 is fixedly installed at the top rear end of the support frame 3. Side plates 402 are fixedly installed at the inner front and rear edges of the base frame 4. It should be noted that the top to the bottom surface of the support frame 3 is continuous, and the top of the base frame 4 is also continuous. Figure 4 As shown.

[0030] Then, a feed trough 401 is fixedly installed on the middle right side of the base frame 4. The feed trough 401 is used to receive the material that slides out of the discharge port 201.

[0031] Then, the output shaft 304 is rotatably mounted inside one side plate 402, and the bearing rod 403 is rotatably mounted on the inner side of the other side plate 402.

[0032] Adjusting rods 5 are evenly and rotatably mounted in a ring array on the inner circumferential surface of the output shaft 304 and the bearing rod 403. Slides 501 are rotatably mounted on the outer circumferential surface of one inner end of each adjusting rod 5. Figure 10 As shown, a clamping plate 502 is provided on the outer side of the slide table 501. Four sliding grooves 503 are formed on the outer surface of the clamping plate 502, and the grooves 503 are slidably connected to the slide table 501. A servo motor 504 is fixedly installed at the center of the outer side of the clamping plate 502. The output shaft of the servo motor 504 extends into the interior of the clamping plate 502, and a drive gear 505 is fixedly installed on the circumferential surface of the output shaft. Furthermore, worm gears 506 are rotatably mounted in a circular array inside the clamping plate 502. The worm gears 506 and the drive gears 505 are in a meshing state. Figure 10 As shown.

[0033] Then, a worm 507 is rotatably installed inside the slide 503. The worm 507 and the worm wheel 506 are in a meshing state, and the worm 507 and the slide table 501 are in a threaded rotational connection.

[0034] Therefore, during use, when subsequent clamping of roller skin assemblies 7 with different outer diameter specifications, or when adjusting the working diameter of the crushing roller according to the actual crushing particle size requirements, the servo motor 504 can be started. The servo motor 504 drives the drive gear 505 to rotate, and the drive gear 505 synchronously meshes to drive all the worm gears 506 arranged in the annular array to rotate. The worm gears 506 further drive the worm 507 meshing with them to rotate in the slide groove. Since the worm 507 and the slide table 501 are connected by a threaded rotation, the rotation of the worm 507 can drive all the slide tables 501 to move synchronously along the slide groove 503 towards or away from the center.

[0035] Thus, two adjacent clamping plates 502 can move closer or further apart through the above-described operation process. As a result, special clamping fixtures are customized for different specifications of crushing rolls, which effectively reduces the tooling cost of production testing of multi-specification crushing rolls.

[0036] A liquid coupler 510 is fixedly mounted on the rear end of the output shaft of the servo motor 504. A chuck 511 is fixedly mounted on the inner side of the liquid coupler 510. An air cushion ring 508 is fixedly mounted on the inner edge of the clamping plate 502. Engaging blocks 509 are evenly fixedly mounted in a ring array near the edge and inside the air cushion ring 508. A mounting plate 6 is provided on the inner side of each adjacent clamping plate 502. A mounting slot 610 is opened at the center of the outer side of the mounting plate 6, and an engagement groove 601 is opened on the outer edge. Figure 9 As shown.

[0037] Therefore, during use, the engagement block 509 and the engagement groove 601 are in a sliding connection state. Secondly, the output shaft of the servo motor 504 drives the liquid coupler 510 to rotate. Through the action of the liquid coupler 510, the chuck 511 can be rotated. The chuck 511 is inside the mounting groove 610, which makes the chuck 511 and the mounting groove 610 clamp together, so that the clamping plate 502 and the mounting plate 6 are in a tight connection state. Moreover, the air cushion ring 508 can prevent dust from entering the interior of both.

[0038] It should be noted that the chuck 511 has a disc structure with three protruding structures on its circumference. The internal structure of the mounting slot 610 is a central groove with three protruding structures on its inner circumference. The groove is used to receive the outward protruding structures of the chuck 511. The groove is open on one side to prevent the chuck 511 from slipping off the mounting slot 610.

[0039] Two adjacent mounting brackets 6 are fixedly mounted with threaded rods 602 at their internal centers. A connecting rod 603 is rotatably connected to the interior of each of the two adjacent threaded rods 602. Figure 9 As shown.

[0040] A mounting sleeve 604 is fixedly installed on the outer ear of the connecting rod 603. A rotating gear 605 is rotatably mounted on the outer circumferential surface of the mounting sleeve 604. A turntable 606 is meshed on the outer side of the rotating gear 605. The two ends of the turntable 606 protrude outwards. Then, a sliding groove rod 607 is evenly fixedly mounted in a ring array on the outer circumferential surface of the mounting sleeve 604. A guide rod 608 is slidably mounted inside the sliding groove rod 607. The inner part of the guide rod 608 and the turntable 606 are in a sliding connection state. A limiting arc rod 609 is fixedly installed on the outer side of the guide rod 608. Figure 13 As shown.

[0041] Therefore, during use, when the self-rotating gear 605 is driven to rotate, it will drive the turntable 606 to rotate around the axis of the mounting sleeve 604 through meshing. During the rotation of the turntable 606, it will push each guide rod 608, causing the guide rod 608 to slide outward synchronously along the sliding groove rod 607, thereby causing all the limiting arc rods 609 to expand outward synchronously. After the expansion of multiple sets of evenly distributed limiting arc rods 609, they can be evenly supported and positioned from the inside of the mounting plate assembly. When it is necessary to replace the worn outer roller skin assembly 7, simply drive the self-rotating gear 605 to rotate in the opposite direction. After the turntable 606 rotates in the opposite direction, the guide rod 608 will drive the limiting arc rods 609 to retract inward, thereby releasing the support and fixation of the crushing roller and quickly completing the disassembly of the roller skin assembly 7.

[0042] This internally tightened and fixed structure, compared to the traditional integrated crushing roller, only requires replacing the worn outer composite roller, eliminating the need to replace the entire crushing roller assembly. This significantly reduces equipment maintenance costs. At the same time, multiple sets of uniformly stressed limiting arc rods 609 ensure the coaxiality of the crushing roller after installation, preventing eccentric vibration during sand making and crushing, effectively improving the stability of the crushing roller operation, and ensuring the uniformity of the finished sand and gravel particle size.

[0043] A roller skin assembly 7 is provided on the outer side of the limiting arc-shaped rod 609. The roller skin assembly 7 includes a first roller skin 701. A first mounting block 702 is fixedly installed from the inside to the outside of one end of the first roller skin 701. A second roller skin 703 is rotatably installed on the outside of the first mounting block 702. One end of the second roller skin 703 and one end of the first roller skin 701 are in close contact. A second mounting block 704 is fixedly installed from the inside to the outside of one end of the second roller skin 703. A third roller skin 705 is rotatably installed on the outside of the second mounting block 704. One end of the third roller skin 705 is in close contact with the adjacent end of the second roller skin 703. A third mounting block 707 is rotatably installed on the other end of the third roller skin 705. A fourth roller skin 706 is fixedly installed on the outer end of the third mounting block 707. Figure 12 As shown.

[0044] Then, an annular groove 708 is provided at the center of the inner circumferential surface of the first roller skin 701, the second roller skin 703, the third roller skin 705 and the fourth roller skin 706, and the annular groove 708 and the limiting arc rod 609 are in a sliding connection state.

[0045] Therefore, during use, when a certain area of ​​the crushing roller shows severe wear and requires maintenance and replacement, it is not necessary to disassemble the entire crushing roller from the equipment or replace the entire ring of roller skins. Only the worn section of roller skin needs to be slid out, replaced with a new roller skin, and then slid back into place to complete the maintenance. The remaining unworn roller skins can continue to be used, significantly reducing the material cost of roller skin replacement, the workload of replacement operations, and shortening equipment downtime for maintenance. The four roller skins, when enclosed, form a complete and continuous crushing working surface. The close fit between adjacent roller skin end faces prevents gaps and material leakage. Simultaneously, the cooperation between the annular groove 708 and the limiting arc rod 609 reliably limits the radial movement of the roller skins, preventing displacement during crushing operations and ensuring the stability of the crushing process. Combining bimetallic composite casting technology, this crushing roller allows the roller core to be made of a material with excellent toughness to ensure the overall structural strength, while the roller skin is made of a high-hardness wear-resistant material to meet the wear resistance requirements of crushing operations. In addition, with the segmented and individually replaceable roller skin structure, the performance, service life and maintenance economy of the crushing roller are taken into account, effectively improving the operating efficiency of the vertical double roller sand making machine.

[0046] Then, an upper seat frame 8 is fixedly installed on the top of the base frame 4, and a compressed air bag 11 is fixedly installed on the inner right side of the upper seat frame 8. Next, a protective shell 9 is rotatably installed on the upper left side of the front and rear side plates 402, and a telescopic pump 10 is rotatably installed on the lower right end of the protective shell 9. The lower part of the telescopic pump 10 is rotatably installed on the upper right side of the side plate 402. Figure 6 As shown.

[0047] Then, the top right side of the protective shell 9 and the lower part of the compression air bag 11 are in a close fit. Thus, during use, when the telescopic pump 10 extends, it can push the protective shell 9 to flip upward around the rotating mounting point on the left side. The top right side of the protective shell 9 moves upward simultaneously and pushes the compression air bag 11. After being compressed, the compression air bag 11 expands inward, which improves the stability of the crushing roller rotation.

[0048] When it is necessary to disassemble and replace the worn roller skin, simply control the telescopic pump 10 to retract and pull the right end of the protective shell 9 downward to release the pushing action of the protective shell 9 on the compression air bag 11. After the compression air bag 11 loses pressure, it rebounds and resets, disengaging from the contact state with the roller shaft. At this time, the worn roller skin can be directly pulled out and replaced from the side without disassembling the entire side protection structure of the frame, which further simplifies the maintenance process. Combined with the segmented roller skin structure that can be replaced individually, it effectively shortens the equipment downtime for maintenance and improves the overall operating efficiency of the vertical double roller sand making machine.

[0049] Then, inside the protective shell 9, the same structure as described above is provided. For example, bearing rods 403 are rotatably installed on the front and rear sides of the interior of the protective shell 9. The inner sides of the two bearing rods 403 are provided with the same structure as described above. Thus, the function produced is the same as described above, and they are in a mutually close state with the first roller skin 701, the second roller skin 703, the third roller skin 705 and the fourth roller skin 706, so that the adjacent first roller skin 701, the second roller skin 703, the third roller skin 705 and the fourth roller skin 706 are used to crush the passing material.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crushing roller structure for a vertical twin-roll sand making machine based on bimetallic composite casting, comprising a sinking plate (1), characterized in that: A support frame (3) is fixedly installed on the upper end surface of the substrate (1), and a base frame (4) is fixedly installed on the upper end of the support frame (3). Side plates (402) are fixedly installed on the front and rear edges of the base frame (4). The front and rear side plates (402) are provided with symmetrical clamping plates (502), and the inner circumferential surface of the clamping plates (502) is fitted with an mounting plate (6). The inner sides of the two mounting discs (6) are provided with roller skin assembly (7), which includes a first roller skin (701), a second roller skin (703), a third roller skin (705) and a fourth roller skin (706). The first roller skin (701), the second roller skin (703), the third roller skin (705) and the fourth roller skin (706) are in a state of mutual contact at their adjacent ends. The upper end of the base frame (4) is fixedly installed with an upper frame (8). The upper frame (8) is provided with a protective shell (9). The protective shell (9) is also provided with a first roller skin (701), a second roller skin (703), a third roller skin (705), and a fourth roller skin (706) with the same structure. The outer circumferential surfaces of the upper and lower first roller skins (701), second roller skins (703), third roller skins (705) and fourth roller skins (706) are in a state of contact; A first mounting block (702) is fixedly installed at one end of the first roller skin (701). A second roller skin (703) is provided on the outer side of the first mounting block (702). A second mounting block (704) is fixedly installed at one end of the second roller skin (703). A third roller skin (705) is provided on the outer side of the second mounting block (704). A third mounting block (707) is provided on the other end of the inner side of the third roller skin (705). A fourth roller skin (706) is fixedly installed on one end of the outer side of the third mounting block (707). An annular groove (708) is provided on the inner central circumferential surface of the first roller skin (701), the second roller skin (703), the third roller skin (705) and the fourth roller skin (706). A limiting arc rod (609) is provided inside the annular groove (708). The mounting plate (6) has a mounting slot (610) at its outer center. A chuck (511) is rotatably mounted inside the mounting slot (610). Threaded rods (602) are fixedly mounted at the inner center of two adjacent mounting plates (6). Connecting rods (603) are rotatably mounted on the outer circumference of two adjacent threaded rods (602). Mounting sleeves (604) are fixedly mounted on the outer side of the connecting rods (603). Rotating gears (605) are rotatably mounted on the outer side of the mounting sleeves (604). Turntables (606) are rotatably mounted on the outer side of two adjacent rotating gears (605). The mounting sleeve (604) has a ring array of uniformly fixed sliding rods (607) on its outer circumferential surface. A guide rod (608) is slidably installed inside the sliding rod (607). The inner side of the guide rod (608) engages with the outer side of the adjacent turntable (606). A limiting arc rod (609) is fixedly installed on the outer side of the guide rod (608). A protective shell (9) is rotatably mounted on the upper left side of the side plate (402). A telescopic pump (10) is rotatably mounted on the lower right front and rear edges of the protective shell (9). The lower ends of the telescopic pump (10) are rotatably mounted on the upper right edge of the adjacent side plate (402). An upper frame (8) is provided on the upper outer side of the protective shell (9). A compression airbag (11) is provided inside the upper frame (8). The lower end of the compression airbag (11) is in contact with the upper right side surface of the protective shell (9).

2. The crushing roller structure of the vertical double-roll sand making machine based on bimetallic composite casting according to claim 1, characterized in that: A material box frame (2) is fixedly installed on the upper right side of the substrate (1) near the edge. Two discharge ports (201) are opened on the left side of the material box frame (2). A symmetrical support frame (3) is fixedly installed on the upper surface of the substrate (1). A first motor (301) is fixedly installed on the left edge of the support frame (3). A conveyor belt (302) is rotatably installed on the circumferential surface of the output shaft of the first motor (301).

3. The crushing roller structure of the vertical double-roll sand making machine based on bimetallic composite casting according to claim 2, characterized in that: A speed reducer (303) is rotatably mounted on the other end of the inner side of the conveyor belt (302). The lower end of the speed reducer (303) is fixedly mounted on the upper edge of the support frame (3). An output shaft (304) is rotatably mounted on the inner side of the speed reducer (303). One end of the inner side of the output shaft (304) extends to the inner side of the adjacent side plate (402).

4. The crushing roller structure of the vertical double-roll sand making machine based on bimetallic composite casting according to claim 1, characterized in that: The right end of the base frame (4) is fixedly installed with a feed trough (401). A bearing rod (403) is rotatably installed on the inner side of one of the side plates (402). An adjusting rod (5) is rotatably installed on the inner circumferential surface of the bearing rod (403) and the adjacent output shaft (304). A slide table (501) is rotatably installed on one end of the inner side of the adjusting rod (5). A clamping plate (502) is provided on the outer side of the slide table (501). A cross-shaped slide groove (503) is opened on the outer side of the clamping plate (502). The slide table (501) is slidably installed inside the adjacent slide groove (503).

5. The crushing roller structure of the vertical double-roll sand making machine based on bimetallic composite casting according to claim 4, characterized in that: A servo motor (504) is fixedly installed at the center of the outer side of the clamping plate (502). A drive gear (505) is fixedly installed on the output shaft of the servo motor (504) and inside the clamping plate (502). A worm gear (506) is meshed on the outer side of the drive gear (505) and inside the clamping plate (502). A worm (507) is meshed on the worm gear (506). The worm (507) extends into the interior of the adjacent slide groove (503) and is threadedly rotatably connected to the adjacent slide table (501).

6. The crushing roller structure of the vertical double-roll sand making machine based on bimetallic composite casting according to claim 5, characterized in that: A liquid coupler (510) is installed at the rear end of the output shaft of the servo motor (504), and a chuck (511) is fixedly installed at the rear end of the liquid coupler (510). An air cushion ring (508) is fixedly installed on the outer side of the rear end of the clamping plate (502) near the edge. Engaging blocks (509) are evenly fixedly installed in a ring array on the outer edge of the clamping plate (502). An installation plate (6) is provided on the outer side of the engagement block (509). A corresponding engagement groove (601) is opened on the outer side of the installation plate (6). The engagement groove (601) and the engagement block (509) are slidably connected.

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