Wear-resistant and toughened type carrier roller sealing cover

Abstract

This invention provides a wear-resistant and toughened idler roller sealing cover, including an idler roller, a sealing cover, and an idler roller shaft. The sealing cover is fitted onto the outer wall of the idler roller shaft via an installation assembly and is detachably installed at one end of the idler roller. The installation assembly includes a rectangular frame with a threaded sleeve screwed onto the center of the rectangular frame. The threaded sleeve is rotatably fitted onto the outer wall of the idler roller shaft. Installation rods are installed on both sides of the rectangular frame, and clamping rods are rotatably installed at both ends of the two sets of installation rods. Each of the four sets of clamping rods has an active clamping block at its top and a driven block at its bottom that cooperates with the rectangular frame. This invention achieves a detachable installation of the sealing cover on the outer wall of the idler roller shaft by using the rectangular frame, threaded sleeve, installation rods, clamping rods, active clamping blocks, and driven blocks of the installation assembly in conjunction with the annular engagement groove on the inner wall of the sealing cover. The advantage is that the sealing cover can be installed and removed without the need for complex tools, facilitating later maintenance and replacement, and reducing operational difficulty and maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of transportation device technology, and more specifically, it relates to a wear-resistant and toughened idler roller sealing cover. Background Technology

[0002] Idler sealing covers are key protective components for belt conveyor idlers. They are mainly fitted on the outside of the idler shaft and cooperate with the end face of the idler to achieve a sealing function. Their core function is to prevent dust, liquid and other contaminants from entering the bearing cavity inside the idler, while reducing the loss of lubricating grease and ensuring the stable operation of the idler. They are widely used in industries that rely on belt conveyors, such as mining, metallurgy, cement, and ports.

[0003] Existing Chinese patent application number: CN202321171709.9 discloses a roller sealing device. This utility model relates to the field of transportation device technology and discloses a roller sealing device, including a supporting long shaft. A connecting installation sleeve is fixedly fitted on the outer edge of the supporting long shaft. An inner ring sleeve is fixedly fitted on the outer edge of the connecting installation sleeve. Several rollers are movably connected to the outer edge of the inner ring sleeve. Through the cooperation of a sealing ring, a rubber ring, and a sealing rubber sheet, the gap between the sealing cover and the object roller is sealed by the sealing ring and the rubber ring. The sealing ring provides a first seal, the rubber ring provides a second seal, and the sealing rubber sheet provides a third seal through the tight fit between the sealing rubber sheet and the groove, resulting in a better sealing effect. This solves the problems of existing rollers where the bearings are mostly exposed, and dust entering the bearings after long-term use, making the rollers unusable, and the problem of existing roller sealing devices having only one layer of seal, resulting in poor sealing effect.

[0004] The aforementioned utility model still suffers from a significant drawback in actual production and maintenance: its sealing cover, sealing ring, and object drag cylinder are fixed by a fixing screw passing through a common threaded hole. Furthermore, the outer edge of the fixing screw is coated with sealant to enhance its tightness. This structure necessitates overcoming the adhesive resistance of the sealant during disassembly, unscrewing the fixing screws one by one, and then removing the sealing cover, rubber ring, and sealing rubber sheet in sequence before accessing the internal rollers, inner ring sleeve, and other components. For enterprises with large-scale roller usage, such as mines and ports, disassembling a single unit can take 10-15 minutes. Frequent maintenance not only increases the labor intensity of workers but also prolongs conveyor downtime. According to industry statistics, this disassembly method results in low maintenance efficiency, adding extra equipment downtime costs to enterprises annually, and still cannot meet the demand for rapid maintenance in actual production.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a wear-resistant and toughened idler roller sealing cover in order to achieve a more practical purpose. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a wear-resistant and toughened idler roller sealing cover, which is achieved by the following specific technical means: A wear-resistant and toughened idler roller sealing cover includes an idler roller, a sealing cover, and an idler roller shaft. The sealing cover is fitted onto the outer wall of the idler roller shaft via an installation assembly and is detachably installed at one end of the idler roller. The installation assembly includes a rectangular frame with a threaded sleeve screwed onto the middle of the rectangular frame. The threaded sleeve is rotatably fitted onto the outer wall of the idler roller shaft. Installation rods are installed on both sides of the rectangular frame. Pressure rods are rotatably installed at both ends of the two sets of installation rods. Each of the four sets of pressure rods has an active pressure block at its top and a driven block that can cooperate with the rectangular frame at its bottom. The inner wall of the sealing cover has an annular engagement groove that can cooperate with the active pressure block. Both sides of the rectangular frame are slidably connected to the sealing cover.

[0007] Preferably, sliding grooves are provided on both sides of the rectangular frame, and sliding brackets are slidably installed through the two sets of sliding grooves, with one end of each set of sliding brackets installed on the inner wall of the sealing cover.

[0008] Preferably, the inner side of the sealing cover is provided with a first annular groove and a second annular groove spaced apart along the axial direction. A first rubber ring is embedded in the first annular groove, and a second rubber ring is embedded in the second annular groove. Both the first rubber ring and the second rubber ring abut against the roller shaft.

[0009] Preferably, the sealing cap is made of a wear-resistant and toughened composite material, which is a blend of PA66 and 30% glass fiber and elastomer, and the wall thickness of the sealing cap is set to 5-8mm.

[0010] Preferably, both the first rubber ring and the second rubber ring are made of oil-resistant and aging-resistant rubber material, and the cross-sectional diameter of the first rubber ring is smaller than that of the second rubber ring.

[0011] Preferably, both the active clamping block and the driven block are semi-circular structures. The active clamping block has an arc-shaped groove adapted to the hemispherical structure on the side away from the driven block. Both active clamping blocks can be inserted into the active clamping block. Both driven blocks are located in the middle of the rectangular frame and can abut against the two sides of the inner wall of the rectangular frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model achieves the detachable installation of the sealing cover on the outer wall of the idler roller shaft by using the rectangular frame, threaded sleeve, mounting rod, clamping rod, active clamping block, driven block, and annular locking groove on the inner wall of the sealing cover. The advantage is that the sealing cover can be disassembled and installed without the need for complicated tools, which facilitates later maintenance and replacement, and reduces the difficulty of operation and maintenance costs. By using the material properties of the sealing cover itself, the sealing cover achieves wear resistance and impact resistance. The advantage is that it avoids cracking and deformation of the sealing cover due to vibration or friction during long-term use, extends the overall service life of the sealing cover, and meets the long-term working needs of the idler roller.

[0013] 2. This utility model achieves a double sealing effect between the sealing cover and the idler roller shaft by using the first annular groove on the inner side of the sealing cover in conjunction with the first rubber ring and the second annular groove in conjunction with the second rubber ring. The advantage is that it effectively prevents dust and liquid from entering through the gap between the sealing cover and the idler roller shaft. At the same time, the oil-resistant and aging-resistant material can prevent the rubber ring from being corroded and failed by lubricating grease, further improving the sealing reliability and durability. By using the sliding grooves on both sides of the rectangular frame in conjunction with the sliding frame, a stable sliding connection effect between the rectangular frame and the sealing cover is achieved. The advantage is that it ensures that the installation components move in a fixed direction during the adjustment process, avoiding deviation that would cause the active clamping block to fail to accurately align with the annular locking groove, thus improving assembly stability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the sealing cap and mounting assembly structure of this utility model. Figure 1 .

[0016] Figure 3 This is a schematic diagram of the sealing cap and mounting assembly structure of this utility model. Figure 2 .

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Idler roller; 2. Sealing cover; 3. Idler roller shaft; 4. Mounting assembly; 401. Rectangular frame; 402. Threaded sleeve; 403. Mounting rod; 404. Sliding groove; 405. Sliding frame; 406. Pressing rod; 407. Driven block; 408. Active pressing block; 409. Annular engaging groove; 5. First annular groove; 501. First rubber ring; 6. Second annular groove; 601. Second rubber ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a wear-resistant and toughened idler roller sealing cover, including an idler roller 1, a sealing cover 2, and an idler roller shaft 3. The sealing cover 2 is fitted onto the outer wall of the idler roller shaft 3 via an installation assembly 4 and is detachably installed at one end of the idler roller 1. The installation assembly 4 includes a rectangular frame 401, with a threaded sleeve 402 spirally installed in the middle of the rectangular frame 401. The threaded sleeve 402 is rotatably fitted onto the outer wall of the idler roller shaft 3. Installation rods 403 are installed on both sides of the rectangular frame 401. Pressure rods 406 are rotatably installed at both ends of the two sets of installation rods 403. The top of each of the four sets of pressure rods 406 is provided with an active pressure block 408, and the bottom of each of them is provided with a driven block 407 that can cooperate with the rectangular frame 401. The inner wall of the sealing cover 2 is provided with an annular engagement groove 409 that can cooperate with the active pressure block 408. Both sides of the rectangular frame 401 are slidably connected to the sealing cover 2.

[0020] The rectangular frame 401 has sliding grooves 404 on both sides, and a sliding bracket 405 is slidably installed through the two sets of sliding grooves 404. One end of each set of sliding brackets 405 is installed on the inner wall of the sealing cover 2. Through the sliding cooperation between the sliding grooves 404 of the rectangular frame 401 and the sliding brackets 405, and the fixed connection between the sliding brackets 405 and the inner wall of the sealing cover 2, a stable sliding connection between the rectangular frame 401 and the sealing cover 2 is achieved. The advantage is that it can limit the direction of movement of the installation component 4 during the adjustment process, and prevent the rectangular frame 401 from shifting, which would cause the active clamping block 408 to fail to accurately align with the corresponding structure, thus effectively improving the stability and accuracy of the sealing cover 2 during assembly.

[0021] The sealing cover 2 has a first annular groove 5 and a second annular groove 6 spaced axially on its inner side. A first rubber ring 501 is embedded in the first annular groove 5, and a second rubber ring 601 is embedded in the second annular groove 6. Both the first rubber ring 501 and the second rubber ring 601 abut against the idler roller shaft 3. Through the fitting of the first annular groove 5 and the first rubber ring 501, and the fitting of the second annular groove 6 and the second rubber ring 601, as well as the abutting fit between the first rubber ring 501, the second rubber ring 601 and the idler roller shaft 3, a double sealing effect is achieved between the sealing cover 2 and the idler roller shaft 3. The advantage is that it can effectively prevent external dust and liquid from entering through the gap between the sealing cover 2 and the idler roller shaft 3, protect the internal components of the idler roller from damage by contaminants, and extend the overall service life of the idler roller.

[0022] The sealing cover 2 is made of wear-resistant and toughened composite material, which is a blend of PA66 and 30% glass fiber and elastomer. The wall thickness of the sealing cover 2 is set at 5-8mm. Through the wear-resistant and toughened composite material of PA66 and 30% glass fiber and elastomer used in the sealing cover 2, and the 5-8mm wall thickness design, the sealing cover 2 achieves excellent wear resistance and impact toughness. The advantage is that it can resist the friction loss and vibration impact during the operation of the idler roller, avoid cracking and deformation after long-term use, significantly extend the service life of the sealing cover 2, and meet the needs of long-term stable operation of the idler roller.

[0023] The first rubber ring 501 and the second rubber ring 601 are both made of oil-resistant and aging-resistant rubber. The cross-sectional diameter of the first rubber ring 501 is smaller than that of the second rubber ring 601. By using oil-resistant and aging-resistant rubber materials for the first rubber ring 501 and the second rubber ring 601, as well as their different cross-sectional diameters, the rubber rings achieve a differentiated fit between durability and double sealing. The advantages are that, on the one hand, the rubber rings can be prevented from aging and failing due to corrosion by lubricating grease on the surface of the idler roller shaft 3, thus extending the service life of the rubber rings. On the other hand, the design of different cross-sectional diameters allows the two sets of rubber rings to fit the idler roller shaft 3 from different dimensions, improving the sealing reliability between the sealing cover 2 and the idler roller shaft 3.

[0024] Both the active clamping block 408 and the driven block 407 are semi-circular structures. The active clamping block 408 has an arc-shaped groove on the side away from the driven block 407 that is adapted to the hemispherical structure. Both active clamping blocks 408 can be inserted into the active clamping block 408. Both driven blocks 407 are located in the middle of the rectangular frame 401 and can abut against the two sides of the inner wall of the rectangular frame 401. Through the semi-circular structure of the active clamping block 408 and the driven block 407, the arc-shaped groove design of the active clamping block 408, and the abutment of the driven block 407 against the two sides of the inner wall of the rectangular frame 401, the sealing cover 2 is firmly fixed. The advantage is that the semi-circular structure and the arc-shaped groove allow the active clamping block 408 to fit more closely to the corresponding assembly structure, avoiding scratching related parts. At the same time, the abutment of the driven block 407 against the inner wall of the rectangular frame 401 can form a stable support and fixation, preventing the sealing cover 2 from loosening as the roller 1 rotates, and ensuring the installation stability of the sealing cover 2.

[0025] The working principle of this embodiment is as follows: During the installation phase, the sliding grooves 404 on both sides of the rectangular frame 401 in the installation assembly 4 first slide with the sliding frame 405, with one end of the sliding frame 405 installed on the inner wall of the sealing cover 2, so that the rectangular frame 401 and the sealing cover 2 are stably connected. Then, the threaded sleeve 402, which is screwed and installed in the middle of the rectangular frame 401, rotates and is fitted onto the outer wall of the roller shaft 3, driving the mounting rods 403 on both sides of the rectangular frame 401 to move, causing the clamping rods 406 at both ends of the two sets of mounting rods 403 to rotate synchronously. Subsequently, the active clamping block 408 at the top of the clamping rod 406 inserts into the annular locking groove 409 on the inner wall of the sealing cover 2, while the driven block 407 at the bottom of the clamping rod 406 abuts against the inner wall of the rectangular frame 401, thereby... The sealing cover 2 is pressed tightly to one end of the idler roller 1, thus achieving the detachable installation of the sealing cover 2 on the outer wall of the idler roller shaft 3 and one end of the idler roller 1. During use, the first rubber ring 501 and the second rubber ring 601, which are respectively embedded in the first annular groove 5 and the second annular groove 6 at intervals along the axial direction on the inner side of the sealing cover 2, abut against the idler roller shaft 3, forming a double sealing barrier to effectively prevent external dust and liquid from entering. At the same time, the sealing cover 2 is made of a wear-resistant and toughened composite material of PA66 + 30% glass fiber and elastomer with a wall thickness of 5-8mm, which can resist friction and vibration impact during long-term use and prevent the sealing cover 2 from cracking and deforming. The whole structure achieves the synergistic effect of sealing, fixing and protection through the mechanical cooperation of each structure, meeting the working requirements of the idler roller 1.

[0026] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A wear-resistant and toughened idler roller sealing cover, comprising an idler roller (1), a sealing cover (2), and an idler roller shaft (3), characterized in that: The sealing cover (2) is fitted onto the outer wall of the idler roller shaft (3) by the mounting assembly (4) and is detachably installed at one end of the idler roller (1). The mounting assembly (4) includes a rectangular frame (401), a threaded sleeve (402) is spirally installed in the middle of the rectangular frame (401), the threaded sleeve (402) is rotatably fitted onto the outer wall of the idler roller shaft (3), mounting rods (403) are installed on both sides of the rectangular frame (401), and clamping rods (406) are rotatably installed at both ends of the two sets of mounting rods (403). The top of each of the four sets of clamping rods (406) is provided with an active clamping block (408), and the bottom of each of them is provided with a driven block (407) that can cooperate with the rectangular frame (401). The inner wall of the sealing cover (2) is provided with an annular locking groove (409) that can cooperate with the active clamping block (408). Both sides of the rectangular frame (401) are slidably connected to the sealing cover (2).

2. The wear-resistant and toughened idler roller sealing cover according to claim 1, characterized in that: The rectangular frame (401) has sliding grooves (404) on both sides, and sliding brackets (405) are slidably installed through the two sets of sliding grooves (404). One end of each set of sliding brackets (405) is installed on the inner wall of the sealing cover (2).

3. The wear-resistant and toughened idler roller sealing cover according to claim 1, characterized in that: The sealing cover (2) has a first annular groove (5) and a second annular groove (6) spaced apart along the axial direction on the inner side. The first annular groove (5) is fitted with a first rubber ring (501), and the second annular groove (6) is fitted with a second rubber ring (601). The first rubber ring (501) and the second rubber ring (601) both abut against the idler roller shaft (3).

4. The wear-resistant and toughened idler roller sealing cover according to claim 1, characterized in that: The sealing cap (2) is made of wear-resistant and toughened composite material, which is a blend of PA66 and 30% glass fiber and elastomer, and the wall thickness of the sealing cap (2) is set to 5-8mm.

5. The wear-resistant and toughened idler roller sealing cover according to claim 3, characterized in that: The first rubber ring (501) and the second rubber ring (601) are both made of oil-resistant and aging-resistant rubber material, and the cross-sectional diameter of the first rubber ring (501) is smaller than that of the second rubber ring (601).

6. The wear-resistant and toughened idler roller sealing cover according to claim 1, characterized in that: Both the active clamping block (408) and the driven block (407) are semi-circular structures. The active clamping block (408) has an arc-shaped groove adapted to the semi-circular structure on the side away from the driven block (407). Both active clamping blocks (408) can be inserted into the active clamping block (408). Both driven blocks (407) are located in the middle of the rectangular frame (401) and can abut against the two sides of the inner wall of the rectangular frame (401).

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