Puller for the outer shoe of a transmission roller bearing

Abstract

This application relates to the technical field of logistics equipment maintenance tools, and discloses a puller for disassembling the outer bearing shell of a conveyor roller, comprising: a main rod, a screw, a mounting ring, and pull claws. The main rod is detachably mounted on the end of the conveyor roller, and a threaded seat is provided on the main rod; the screw is threadedly connected to the threaded seat, and the axial direction of the screw is parallel to the axial direction of the conveyor roller; a locking block is provided at the end of the screw near the conveyor roller, and a rotating head is provided at the end away from the conveyor roller; the mounting ring is sleeved on the screw, located on the side near the conveyor roller, and several pull claws are evenly hinged along its circumference on the mounting ring, with barbs corresponding to the outer bearing shell at the ends of the pull claws. The solution provided by this application disassembles the jammed outer bearing shell by pulling, making the force on the outer bearing shell more even, avoiding damage to the outer bearing shell and the conveyor roller, and effectively protecting the equipment's precision and service life.

Description

Technical Field

[0001] This application relates to the field of logistics equipment maintenance tools, and specifically to a puller for disassembling the outer shell of a conveyor roller bearing. Background Technology

[0002] In logistics transportation systems, conveyor rollers are core components for continuous cargo transport. Their bearings require periodic replacement due to wear and aging during long-term operation. Because some damaged bearing shells can become stuck inside the conveyor roller, making removal difficult, the current method primarily involves forcibly removing the bearing shells by striking them.

[0003] The method of forcibly dismantling the equipment by striking it with tools has the following problems: First, uneven force during dismantling can easily cause damage to the bearing outer shell and the surface of the transmission roller journal, affecting the accuracy and service life of the equipment. In addition, the striking force is difficult to control, and the impact force may cause the bearing outer shell to break, or even affect other components, resulting in damage to the transmission roller. Second, it is labor-intensive and inefficient. Furthermore, due to the narrow space where the transmission roller bearing is installed, workers' hands are easily injured during the striking process, posing a safety hazard during installation. Utility Model Content

[0004] This application provides a puller for removing the outer bearing shell of a transmission roller, which aims to solve the problem of difficult removal of the outer bearing shell that is stuck on the transmission roller shaft.

[0005] To achieve the above objectives, this application employs the following technical solution:

[0006] A puller for disassembling the outer bearing shell of a transfer roller includes:

[0007] The main rod is detachably mounted on the end of the transmission roller and is provided with a threaded seat.

[0008] A screw is threadedly connected to a threaded seat, and the axial direction of the screw is parallel to the axial direction of the transmission roller; a locking block is provided at the end of the screw near the transmission roller, and a rotating head is provided at the end away from the transmission roller;

[0009] The mounting ring is sleeved on the screw and located on the side close to the conveyor roller. The inner diameter of the mounting ring is equal to the outer diameter of the screw, so that the mounting ring can rotate or slide freely on the screw. The inner diameter of the mounting ring is smaller than the diameter of the locking block, so that the locking block can drive the mounting ring to move synchronously.

[0010] Pull claws: Several pull claws are evenly hinged along the circumference of the mounting ring, and the ends of the pull claws are provided with barbs corresponding to the outer shell of the bearing.

[0011] Optionally, in some embodiments, the mounting ring is provided with three sets of connecting ears in the circumferential direction, the included angle between adjacent connecting ears is 120°, and each set of connecting ears is hinged with a pull claw through a hinge shaft.

[0012] Optionally, in some embodiments, the pull claw has a Z-shaped structure.

[0013] Optionally, in some embodiments, a fixing nut is threaded onto the screw, and the screw is fixed by the fixing nut.

[0014] Optionally, in some embodiments, connecting rods are symmetrically arranged at both ends of the main rod, the connecting rods are perpendicular to the main rod, and the ends of the connecting rods are fixedly connected to the fixing rings of the corresponding transmission rollers.

[0015] Optionally, in some embodiments, the fixing ring consists of two semi-circular iron rings, with fixing plates symmetrically arranged at the connection of the two semi-circular iron rings. The two semi-circular iron rings can be connected together by bolts and nuts, thereby tightening the transmission roller and fixing the position of the main rod.

[0016] The beneficial effects of this application are:

[0017] This application disassembles the jammed bearing outer shell by pulling it out, making the bearing outer shell more evenly stressed and avoiding damage to the bearing outer shell and the transmission roller, thus effectively protecting the equipment's precision and service life. The bearing outer shell can be disassembled by rotating the screw, without the need for complicated operating skills or high-intensity physical labor, avoiding worker injuries caused by hammering and improving the safety of the disassembly process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2 This is a front view of the structure of this application.

[0021] Labels for each item in the figure:

[0022] 1-Main rod, 11-Threaded seat, 2-Screw, 21-Clip block, 22-Rotating head, 23-Internal hexagonal hole, 3-Mounting ring, 31-Connecting ear, 32-Hinge shaft, 4-Pull claw, 41-Barb, 5-Fixing nut, 6-Connecting rod, 7-Fixing ring, 71-Fixing plate. Detailed Implementation

[0023] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are 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, and are not intended to 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 therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0029] This application proposes improvements and innovations, and presents the following embodiments.

[0030] See Figure 1 , Figure 2 A puller for disassembling the outer bearing shell of a transmission roller, comprising:

[0031] Main rod 1 is the core of the entire device. It is made of high-strength steel and has a solid rod structure. A threaded seat 11 is set in the middle of the main rod 1. The position of the threaded seat 11 needs to be roughly aligned with the transmission roller bearing. The accuracy does not need to be too high. It is sufficient to ensure that the error caused by alignment is within 1cm. This is because the movable pull claw 4 can compensate for the error.

[0032] Screw 2 is threadedly connected to threaded seat 11, dividing screw 2 into upper and lower sections, with the lower section closer to the conveyor roller. During installation, it is necessary to ensure that the axis of screw 2 is parallel to the axis of the conveyor roller to facilitate the removal of the jammed bearing outer shell from the conveyor roller. A retaining block 21 is welded to the end of the lower section of screw 2, and a rotating head 22 is welded to the end of the upper section of screw 2. The rotating head 22 is hexagonal, which facilitates the use of tools such as wrenches for auxiliary rotation. Furthermore, the rotating head 22 also has an internal hexagonal hole 23 to accommodate more tools.

[0033] The mounting ring 3 is made of high-strength steel and has an overall circular structure. It is fitted onto the lower section of the screw 2, near the transmission roller. The area of ​​the screw 2 near the locking block 21 has a smooth surface without threads, and the width of this smooth surface is equal to the thickness of the mounting ring. This position is specifically designed for the mounting ring 3 to ensure that the screw 2 does not rotate with it. Furthermore, the inner diameter of the mounting ring 3 is equal to the outer diameter of the screw 2, allowing it to rotate freely on the screw or slide along the axial direction of the screw 2. Also, the inner diameter of the mounting ring 3 is smaller than the diameter of the locking block 21. When the screw 2 rotates, it causes the locking block 21 to rise, which in turn drives the mounting ring 3 to move synchronously.

[0034] The pull claw 4 has three sets of connecting ears 31 arranged circumferentially on the mounting ring 3. The included angle between adjacent connecting ears 31 is 120°. Each set of connecting ears 31 is hinged to a pull claw 4 via a hinge shaft 32. The end of the pull claw 4 is provided with a barb 41 corresponding to the outer shell of the bearing. Furthermore, the pull claw 4 has a Z-shaped structure. This structure allows the ends of the pull claw 4 with barbs 41 to close together, thus facilitating its insertion into the transmission roller to hook the edge of the outer shell of the bearing.

[0035] In some embodiments, since the screw 2 is threadedly connected to the threaded seat 11, there are no structures on its upper and lower sides for fixing the screw 2. Because there is a small gap between the external thread on the screw 2 and the internal thread on the threaded seat 11, the screw 2 will continuously swing at the threaded seat 11 due to vibration and other factors when the device is moved. Over time, this can easily damage the threads, leading to problems such as thread stripping. Therefore, a fixing nut 5 is threadedly connected to the upper part of the screw 2. When the device is moved, tightening the fixing nut 5 causes the locking block 21 to move the mounting ring 3 close to and press it against the threaded seat 11. At this time, the threads between the screw 2 and the fixing nut 5 are in a compressed state, thereby fixing the screw 2 and preventing it from swinging due to vibration and other factors, thus alleviating the problem of thread wear.

[0036] In some embodiments, to facilitate the fixing of the main rod 1, connecting rods 6 are symmetrically fixed to both ends of the main rod 1. The connecting rods 6 are perpendicular to the main rod 1, and a fixing ring 7 of the corresponding size of the transmission roller is fixed to the end of the connecting rod 6. Specifically, the fixing ring 7 consists of two semi-circular iron rings, and fixing plates 71 are symmetrically arranged at the connection point of the two semi-circular iron rings. The two semi-circular iron rings can be connected together by bolts and nuts, thereby tightening the outer wall of the transmission roller and fixing the position of the main rod 1. After use, the fixing ring 7 can be removed by loosening the bolts and nuts, which is convenient and quick.

[0037] Specific work process:

[0038] The main rod 1 is fixedly installed at the end of the transmission roller by the fixing ring 7. Loosen the fixing nut 5 to release the screw 2. Rotate the screw 2 to make the pull claw 4 gradually approach the jammed outer bearing shell until the barb 41 of the pull claw 4 can be fully inserted into the outer bearing shell. The worker holds the pull claw 4 and slides it along the axial direction of the screw 2 through the mounting ring 3 to adjust the position of the barb 41. In this way, all the barbs 41 hook the edge of the outer bearing shell. At this time, the worker rotates the rotating head 22 by hand, and the pull claw 4 begins to move away from the outer bearing shell, thereby pre-tightening the barb 41 to prevent it from disengaging. After pre-tightening, the rotating head 22 is clamped by a wrench or other tools and rotated until the outer bearing shell is removed from the transmission roller, completing the disassembly.

[0039] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this utility model.

Claims

1. A puller for disassembling the outer bearing shell of a conveyor roller, characterized in that, include: The main rod is detachably mounted on the end of the transmission roller and is provided with a threaded seat. A screw is threadedly connected to a threaded seat, and the axial direction of the screw is parallel to the axial direction of the transmission roller; a locking block is provided at the end of the screw near the transmission roller, and a rotating head is provided at the end away from the transmission roller; The mounting ring is sleeved on the screw and located on the side close to the conveyor roller. The inner diameter of the mounting ring is equal to the outer diameter of the screw, so that the mounting ring can rotate or slide freely on the screw. The inner diameter of the mounting ring is smaller than the diameter of the locking block, so that the locking block can drive the mounting ring to move synchronously. Pull claws: Several pull claws are evenly hinged along the circumference of the mounting ring, and the ends of the pull claws are provided with barbs corresponding to the outer shell of the bearing.

2. The puller for disassembling the outer bearing shell of the conveyor roller according to claim 1, characterized in that, The mounting ring has three sets of connecting ears in its circumferential direction, with an included angle of 120° between adjacent connecting ears. Each set of connecting ears is hinged with a pull claw via a hinge shaft.

3. The puller for disassembling the outer bearing shell of the conveyor roller according to claim 2, characterized in that, The pull claw has a Z-shaped structure.

4. The puller for disassembling the outer bearing shell of the conveyor roller according to claim 1, characterized in that, A fixing nut is threaded onto the screw, which can be used to fix the screw in place.

5. The puller for disassembling the outer bearing shell of the conveyor roller according to claim 1, characterized in that, The main rod is symmetrically provided with connecting rods at both ends. The connecting rods are perpendicular to the main rod, and the ends of the connecting rods are fixed with corresponding conveyor roller fixing rings.

6. The puller for disassembling the outer bearing shell of the conveyor roller according to claim 5, characterized in that, The fixing ring consists of two semi-circular iron rings. Fixing plates are symmetrically arranged at the connection of the two semi-circular iron rings. The two semi-circular iron rings can be connected together by bolts and nuts, thereby tightening the transmission roller and fixing the position of the main rod.

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