Ultra-high molecular weight polyethylene wear-resistant anti-stuck scraper mechanism
Patent Information
- Application Number
- CN202522461549.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-20
AI Technical Summary
[0003]传统的刮板机构在投入物料过多的情况下容易发生卡死情况，往往需要停机清理，浪费生产时间，且容易对机器造成损伤，其次传统的刮板机构在需要检查或更换刮板时，需要工具才能拆下和安装刮板，耗费大量时间
1、本实用新型提出的一种超高分子量聚乙烯耐磨防卡死刮板机构，通过让过多的物料推动压板，压板通过转动连接块向后转动，压板推动转动杆向后上方移动，转动杆将内刮板向上推动，使内刮板在外刮板内部向上滑动，外刮板和内刮板的齿条发生错位，该机构可在推料过多时，刮板下方的齿条自动产生错位，使多余物料从下方错位的齿条中流出，当物料适量时，齿条自动复位，不需要停机处理。
Smart Images
Figure CN224830705U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of scraper technology, and in particular to a wear-resistant and anti-jamming scraper mechanism made of ultra-high molecular weight polyethylene. Background Technology
[0002] A grain scraper is a continuous conveying device that uses a scraper chain as traction to drive a scraper forward, conveying grain through a conveying channel. The ultra-high molecular weight polyethylene (UHMWPE) wear-resistant and anti-jamming scraper mechanism is a scraper device made of UHMWPE material, mainly used in high-wear, jamming environments. This mechanism effectively reduces the frictional resistance between the scraper and the contact surface through the extremely low coefficient of friction, excellent wear resistance, self-lubrication, and impact resistance of UHMWPE, preventing material jamming and adhesion, while extending service life.
[0003] Traditional scraper mechanisms are prone to jamming when too much material is fed in, often requiring machine shutdown for cleaning, wasting production time, and easily damaging the machine. Furthermore, traditional scraper mechanisms require tools to remove and install scrapers when they need to be inspected or replaced, which consumes a lot of time.
[0004] Therefore, those skilled in the art have provided an ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wear-resistant and anti-jamming scraper mechanism for ultra-high molecular weight polyethylene. Excess material pushes a pressure plate, which rotates backward via a connecting block. This pressure plate then pushes a rotating rod upward, which in turn pushes the inner scraper upward, causing it to slide upward inside the outer scraper. The racks of the outer and inner scrapers become misaligned. When excessive material is pushed, the racks below the scraper automatically misalign, allowing excess material to flow out from the misaligned racks. When the material level is appropriate, the racks automatically reset, eliminating the need for machine shutdown.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A wear-resistant and anti-jamming scraper mechanism for ultra-high molecular weight polyethylene includes multiple outer chain plates. Each outer chain plate is fixedly connected to a locking block. An anti-jamming mechanism is provided on the side of each locking block that is far apart from each other. The anti-jamming mechanism includes an outer scraper fixedly connected to the side of each locking block that is far apart from each other. Rotary connecting blocks are fixedly connected to both sides of the front end of the outer scraper. A pressure plate is rotatably connected to the front outer wall of the rotating connecting block. An inner scraper is slidably connected inside the outer scraper. A second rotating hole is opened on both sides of the front outer wall of the inner scraper. A rotating rod is rotatably connected to the inner top surface of the second rotating hole. Each of the locking blocks is equipped with a quick-fixing mechanism on the side away from the anti-jamming mechanism. Each quick-fixing mechanism includes a fixing rod that is slidably connected inside the locking block. A knob is fixedly connected to the side of the fixing rod away from the anti-jamming mechanism. A fixing ring is fixedly connected to the outer wall of the knob near the fixing rod. A limit ring is fixedly connected to the side of the fixing rod near the fixing ring. An outer ring is fixedly connected to the outer wall of the limit ring near the fixing ring. A spring is sleeved on the side of the fixing rod near the fixing ring. Multiple fixing blocks are fixedly connected to the side of the fixing rod away from the knob. A fixing hole is opened inside the locking block on the side near the anti-jamming mechanism. Through the above technical solution, by allowing excess material to push the pressure plate, the pressure plate rotates backward through the rotating connecting block. The pressure plate pushes the rotating rod to move backward and upward, and the rotating rod pushes the inner scraper upward, causing the inner scraper to slide upward inside the outer scraper. The racks of the outer and inner scrapers are misaligned. When too much material is pushed, the racks below the scraper will automatically misalign, allowing excess material to flow out from the misaligned racks below. When the amount of material is appropriate, the racks will automatically reset, without the need to stop the machine.
[0007] Furthermore, the two sides of the spring are fixedly connected to the fixed ring and the limiting ring respectively, the spring is disposed inside the outer ring, and the end of the fixed ring near the limiting ring slides inside the outer ring; With the above technical solution, pressing the knob causes the fixing ring to compress the spring, the fixing ring causes the fixing rod to slide inside the outer ring, and the fixing rod causes the fixing block to move backward into the fixing hole. Turning the knob locks the fixing block inside the fixing hole. Releasing the knob causes the spring to return to its original position and push the fixing ring to press the fixing block tightly into the fixing hole. This mechanism can quickly fix the outer chain plate and the locking block. When replacement is needed, turning the knob can quickly disassemble them.
[0008] Furthermore, each of the outer chain plates has a connecting rod rotatably connected to the outer wall of the side that is close to each other, and an inner chain plate is rotatably connected to the two sides of the connecting rod that are close to the body of the outer chain plate. Through the above technical solution, the connecting rod connects the outer chain plate and the inner chain plate to form a complete conveyor chain.
[0009] Furthermore, a first rotating hole is provided in the middle of the outer wall of the rear end of the pressure plate, and the front end of the rotating rod body is rotatably connected to the inner walls on both sides of the first rotating hole. The above technical solution enables the rotating rod to rotate inside the pressure plate, allowing the rotating rod to move backward.
[0010] Furthermore, dust covers are fixedly connected to both sides of the outer wall of the front end of the outer scraper, and the front end of the dust covers is fixedly connected to the outer wall of the rear end of the pressure plate. Through the above technical solution, the dust cover can prevent grain from entering the second rotating hole and blocking the up-and-down movement of the scraper.
[0011] Furthermore, the fixing rod slides inside the outer chain plate, and the fixing block slides inside the outer chain plate; The above technical solution secures the outer chain plate and the locking block with a fixing rod.
[0012] Furthermore, the limiting ring rotates on the inner wall of the block near the knob; The above technical solution initially limits the position of the quick-fixing mechanism, preventing it from shifting during rotation.
[0013] Furthermore, the outer walls of the outer chain plates that are close to each other are in close contact with the outer walls of the inner chain plates that are far from each other; Through the above technical solution, the outer chain plate and the inner chain plate form a complete transport chain.
[0014] This utility model has the following beneficial effects: 1. This utility model proposes a wear-resistant and anti-jamming scraper mechanism for ultra-high molecular weight polyethylene. By allowing excess material to push the pressure plate, the pressure plate rotates backward through the rotating connecting block. The pressure plate pushes the rotating rod to move backward and upward, and the rotating rod pushes the inner scraper upward, causing the inner scraper to slide upward inside the outer scraper. The racks of the outer and inner scrapers are misaligned. When too much material is pushed, the racks below the scraper automatically misalign, allowing excess material to flow out from the misaligned racks. When the material is at the appropriate level, the racks automatically reset, eliminating the need to stop the machine.
[0015] 2. The present invention proposes a wear-resistant and anti-jamming scraper mechanism for ultra-high molecular weight polyethylene. By pressing the knob, the fixing ring compresses the spring. The fixing ring drives the fixing rod to slide inside the outer ring. The fixing rod drives the fixing block to move backward into the fixing hole. By rotating the knob, the fixing block is jammed inside the fixing hole. By releasing the knob, the spring returns to its original position and pushes the fixing ring to press the fixing block tightly into the fixing hole. This mechanism can quickly fix the outer chain plate and the jamming block. When replacement is needed, the fixing block can be quickly disassembled by rotating the knob. Attached Figure Description
[0016] Figure 1 This is an isometric view of an ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 2 This is an isometric view of the anti-jamming mechanism in the ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 3 This is a schematic diagram of the anti-jamming mechanism in the ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 4 This is a cross-sectional view of the anti-jamming mechanism in the ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 5 Axonometric drawing of the medium-speed fixing mechanism of an ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 6 A cross-sectional view of the quick-fixing mechanism in the ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 7 This is a structural schematic diagram of the quick-fixing mechanism in the ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model; Figure 8 This is a schematic diagram of the opening of the quick-fixing mechanism in the ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism proposed in this utility model.
[0017] Legend: 1. Outer chain plate; 2. Connecting rod; 3. Locking block; 4. Inner chain plate; 5. Quick-fixing mechanism; 501. Knob; 502. Outer ring; 503. Fixing rod; 504. Spring; 505. Fixing ring; 506. Limiting ring; 507. Fixing block; 508. Fixing hole; 6. Anti-jamming mechanism; 601. Outer scraper; 602. Dust cover; 603. Pressure plate; 604. Inner scraper; 605. First rotating hole; 606. Second rotating hole; 607. Rotating rod; 608. Rotating connecting block. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] One specific embodiment of this utility model is provided: Reference Figure 1 , Figure 3 and Figure 7A wear-resistant and anti-jamming scraper mechanism for ultra-high molecular weight polyethylene includes multiple outer chain plates 1. Each outer chain plate 1 is fixedly connected to a locking block 3. Each locking block 3 is provided with an anti-jamming mechanism 6 on the side away from each other. The anti-jamming mechanism 6 includes an outer scraper 601 fixedly connected to the side away from each other of the locking blocks 3. Rotary connecting blocks 608 are fixedly connected to both sides of the front end of the outer scraper 601. A pressure plate 603 is rotatably connected to the front end outer wall of the rotating connecting block 608. An inner scraper 604 is slidably connected inside the outer scraper 601. A second rotating hole 606 is opened on both sides of the front end outer wall of the inner scraper 604. A rotating rod 607 is rotatably connected to the inner top surface of the second rotating hole 606. Each of the sides of the locking block 3 away from the anti-jamming mechanism 6 is provided with a quick-fixing mechanism 5. Each quick-fixing mechanism 5 includes a fixed rod 503 that is slidably connected inside the locking block 3. A knob 501 is fixedly connected to the side of the fixed rod 503 away from the anti-jamming mechanism 6. A fixing ring 505 is fixedly connected to the outer wall of the knob 501 near the fixed rod 503. A limit ring 506 is fixedly connected to the side of the fixed rod 503 near the fixing ring 505. An outer ring 502 is fixedly connected to the outer wall of the limit ring 506 near the fixing ring 505. A spring 504 is sleeved on the side of the fixed rod 503 near the fixing ring 505. Multiple fixing blocks 507 are fixedly connected to the side of the fixed rod 503 away from the knob 501. A fixing hole 508 is opened inside the side of the locking block 3 near the anti-jamming mechanism 6. By allowing excess material to push the pressure plate 603, the pressure plate 603 rotates backward via the rotating connecting block 608. The pressure plate 603 pushes the rotating rod 607 to move backward and upward. The rotating rod 607 pushes the inner scraper 604 upward, causing the inner scraper 604 to slide upward inside the outer scraper 601. The racks of the outer scraper 601 and the inner scraper 604 are misaligned. This mechanism can automatically misalign the racks below the scraper when too much material is pushed, allowing excess material to flow out from the misaligned racks below. When the material is in the appropriate amount, the racks automatically reset without needing to stop the machine.
[0020] Reference Figure 6 , Figure 7 and Figure 8The two sides of the spring 504 are fixedly connected to the fixing ring 505 and the limiting ring 506 respectively. The spring 504 is located inside the outer ring 502. The end of the fixing ring 505 near the limiting ring 506 slides inside the outer ring 502. By pressing the knob 501, the fixing ring 505 is driven to squeeze the spring 504. The fixing ring 505 drives the fixing rod 503 to slide inside the outer ring 502. The fixing rod 503 drives the fixing block 507 to move backward into the fixing hole 508. By rotating the knob 501, the fixing block 507 is locked inside the fixing hole 508. By releasing the knob 501, the spring 504 returns to its original position and pushes the fixing ring 505 to press the fixing block 507 tightly into the fixing hole 508. This mechanism can quickly fix the outer chain plate 1 and the locking block 3. When replacement is needed, the knob 501 can be rotated to quickly disassemble them.
[0021] Reference Figure 1 and Figure 2 Each outer chain plate 1 has a connecting rod 2 rotatably connected to the outer wall of the side that is close to each other. The inner chain plate 4 is rotatably connected to both sides of the connecting rod 2 that are close to the body of the outer chain plate 1. The connecting rod 2 connects the outer chain plate 1 and the inner chain plate 4 to form a complete conveyor chain.
[0022] Reference Figure 2 , Figure 3 and Figure 4 A first rotating hole 605 is provided in the middle of the outer wall of the rear end of the pressure plate 603. The front end of the rotating rod 607 is rotatably connected to the inner walls on both sides of the first rotating hole 605, so that the rotating rod 607 can rotate inside the pressure plate 603 and can move backward. Dust covers 602 are fixedly connected to both sides of the outer wall of the front end of the outer scraper 601. The front end of the dust cover 602 is fixedly connected to the outer wall of the rear end of the pressure plate 603. The dust cover 602 can prevent grain from entering the second rotating hole 606 and blocking the up and down movement of the scraper.
[0023] Reference Figure 1 , Figure 5 and Figure 6 The fixing rod 503 slides inside the outer chain plate 1, and the fixing block 507 slides inside the outer chain plate 1. The fixing rod 503 fixes the outer chain plate 1 and the locking block 3. The limiting ring 506 rotates on the inner wall of the locking block 3 near the knob 501, which initially limits the quick fixing mechanism 5 and prevents the quick fixing mechanism 5 from shifting during rotation. The outer walls of the outer chain plates 1 that are close to each other are tightly fitted with the outer walls of the inner chain plates 4 that are far away from each other. The outer chain plates 1 and the inner chain plates 4 form a complete transport chain.
[0024] Working principle: When fixing the scraper, the locking block 3 is locked onto the outer chain plate 1, the fixing rod 503 is inserted, and the knob 501 is pressed to drive the fixing ring 505 to compress the spring 504. The fixing ring 505 drives the fixing rod 503 to slide inside the outer ring 502. The fixing rod 503 drives the fixing block 507 to move backward into the fixing hole 508. Rotating the knob 501 locks the fixing block 507 into the fixing hole 508. Releasing the knob 501 resets the spring 504 and pushes the fixing ring 505. The fixing ring 505 pulls the fixing block 507 through the fixing rod 503, so that the fixing block 507 is pressed tightly into the fixing hole 508. When the scraper needs to be replaced, simply rotate the knob 501. However, when too much material is pushed, the excess material will push the pressure plate 603. The pressure plate 603 rotates backward through the rotating connecting block 608. The rotating pressure plate 603 pushes the rotating rod 607 to move backward and upward. The rotating rod 607 pushes the inner scraper 604 upward, causing the inner scraper 604 to slide upward inside the outer scraper 601. The racks below the outer scraper 601 and the inner scraper 604 are misaligned, allowing excess material to flow out from the misaligned racks below. When the amount of material pushed is appropriate, the pressure plate 603 is no longer pushed, the racks automatically reset, and the material is pushed normally. The dust cover 602 ensures that the material will not enter the second rotating hole 606 and thus jam the mechanism.
[0025] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0026] 2. Where there is no conflict, the embodiments of this disclosure and the features thereof can be combined with each other to obtain new embodiments. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in this utility model shall be understood by those skilled in the art based on the specific circumstances. In addition, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation on this utility model; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A wear-resistant and anti-jamming scraper mechanism for ultra-high molecular weight polyethylene, comprising multiple outer chain plates (1), characterized in that: Each of the multiple outer chain plates (1) is fixedly connected with a locking block (3). Each locking block (3) is provided with an anti-jamming mechanism (6) on the side away from each other. The anti-jamming mechanism (6) includes an outer scraper (601) fixedly connected to the side away from each other of the locking blocks (3). Rotary connecting blocks (608) are fixedly connected to both sides of the front end of the outer scraper (601). A pressure plate (603) is rotatably connected to the outer wall of the front end of the rotating connecting block (608). An inner scraper (604) is slidably connected inside the outer scraper (601). A second rotating hole (606) is opened on both sides of the outer wall of the front end of the inner scraper (604). A rotating rod (607) is rotatably connected to the inner top surface of the second rotating hole (606). Each of the locking blocks (3) is provided with a quick-fixing mechanism (5) on the side away from the anti-jamming mechanism (6). Each quick-fixing mechanism (5) includes a fixing rod (503) that is slidably connected inside the locking block (3). A knob (501) is fixedly connected to the side of the fixing rod (503) away from the anti-jamming mechanism (6). A fixing ring (505) is fixedly connected to the outer wall of the knob (501) near the fixing rod (503). The rod body of the fixing rod (503) is close to the fixing ring (505). Each of the four rings is fixedly connected to a limiting ring (506) on one side. The outer wall of the limiting ring (506) near the fixing ring (505) is fixedly connected to an outer ring (502). The side of the fixing rod (503) near the fixing ring (505) is fitted with a spring (504). The side of the fixing rod (503) away from the knob (501) is fixedly connected to multiple fixing blocks (507). The side of the locking block (3) near the anti-jamming mechanism (6) has a fixing hole (508).
2. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: The two sides of the spring (504) are fixedly connected to the fixing ring (505) and the limiting ring (506) respectively. The spring (504) is located inside the outer ring (502), and the end of the fixing ring (505) near the limiting ring (506) slides inside the outer ring (502).
3. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: The outer walls of the outer chain plates (1) that are close to each other are rotatably connected to connecting rods (2), and the connecting rods (2) are rotatably connected to inner chain plates (4) on both sides of the rod body of the outer chain plates (1).
4. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: The pressure plate (603) has a first rotating hole (605) in the middle of the outer wall of the rear end, and the front end of the rotating rod (607) is rotatably connected to the inner walls on both sides of the first rotating hole (605).
5. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: Dust covers (602) are fixedly connected to both sides of the front end outer wall of the outer scraper (601), and the front end of the dust cover (602) is fixedly connected to the rear end outer wall of the pressure plate (603).
6. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: The fixing rod (503) slides inside the outer chain plate (1), and the fixing block (507) slides inside the outer chain plate (1).
7. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: The limiting ring (506) rotates on the inner wall of the block (3) near the knob (501).
8. The ultra-high molecular weight polyethylene wear-resistant and anti-jamming scraper mechanism according to claim 1, characterized in that: The outer walls of the outer chain plates (1) that are close to each other are tightly fitted to the outer walls of the inner chain plates (4) that are far apart from each other.