Electric drum sealing structure

Abstract

The utility model discloses a kind of electric roller sealing structure, it is related to electric roller technical field, including first end cap and second end cap, the first end cap and the second end cap are fixed at the both ends of roller body respectively;The central through-hole of the first end cap is equipped with motor fixed shaft, the outer wall of the motor fixed shaft is equipped with first oil seal and first bearing, the side of the first end cap away from the roller body is connected with end cap cover plate, the first oil seal is closer to the end cap cover plate than the first bearing;The central through-hole of the second end cap is equipped with installation fixed shaft, the outer wall of the installation fixed shaft is equipped with second oil seal and second bearing.The utility model can effectively enhance the sealing of the both ends of electric roller by setting first oil seal and second oil seal, and is equipped with separate end cap cover plate, first oil seal is installed before end cap cover plate is installed, to facilitate the assembly of equipment.

Description

Technical Field

[0001] This utility model relates to the field of electric roller technology, and in particular to an electric roller sealing structure. Background Technology

[0002] An electric roller is a drive device that houses the motor inside the roller body. It features a compact structure, small footprint, high transmission efficiency, and good sealing. Roller motors can be used as a power source for belt conveyors and are widely used in various industries.

[0003] To ensure the internal sealing of the roller, end cap structures are required at both ends. Since the ends of the electric roller need to be fixed to the support bracket, the electric roller will have a fixed shaft structure that can pass through the end caps. However, this will reduce the sealing performance of the electric roller. Furthermore, most existing end caps are one-piece structures, which are inconvenient to install when installing the sealing structure.

[0004] Therefore, there is an urgent need in this field for a novel electric roller seal structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an electric roller sealing structure to solve the problems existing in the prior art, which has good sealing performance and is easy to install.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model discloses an electric drum sealing structure, including a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively fixed to both ends of the drum body; The first end cover has a motor fixing shaft in the center through hole. The outer wall of the motor fixing shaft is provided with a first oil seal and a first bearing. An end cover plate is connected to the side of the first end cover away from the roller body. The first oil seal is closer to the end cover plate than the first bearing. The second end cap has a central through hole with a mounting shaft, and the outer wall of the mounting shaft is provided with a second oil seal and a second bearing.

[0007] Preferably, a first sealing ring is provided between the first end cap and the roller body; A second sealing ring is provided between the second end cap and the roller body.

[0008] Preferably, both the first oil seal and the second oil seal are skeleton oil seals.

[0009] Preferably, the first end cap is provided with an annular insertion groove, and the end cap cover plate is provided with an annular insertion component, which can be inserted into the insertion groove.

[0010] Preferably, the outer wall of the plug-in component is provided with a positioning protrusion, and the inner wall of the plug-in groove is provided with a positioning groove, and the positioning protrusion can be located in the positioning groove.

[0011] Preferably, a bearing pressure plate is provided between the first oil seal and the first bearing, and the bearing pressure plate is sleeved on the outer wall of the motor fixed shaft.

[0012] Preferably, a clamping nut is threaded onto the motor's fixed shaft.

[0013] Preferably, there are two second bearings, and two snap ring grooves are provided on the outer wall of the mounting and fixing shaft. Each snap ring groove contains a snap ring body, which is used to abut against one side of the second bearing.

[0014] Preferably, a support sleeve is provided between the two second bearings, and the outer wall of the support sleeve abuts against the inner wall of the second end cap.

[0015] Preferably, a bearing baffle is fixed on the side of the second end cover near the first end cover, and the bearing baffle can abut against a second bearing.

[0016] The present invention achieves the following technical advantages over the prior art: This invention features a first oil seal and a second oil seal within the first and second end covers, respectively. These oil seals connect to the motor mounting shaft and the installation shaft, effectively improving the equipment's sealing performance and achieving an overall protection rating of IP66. Furthermore, the first end cover can be a separate unit from the end cover plate; during assembly, the first oil seal can be installed directly from the outside before installing the end cover plate, facilitating equipment assembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the external structure of the electric drum sealing structure according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the electric drum sealing structure according to an embodiment of the present utility model; Figure 3 This is a diagram showing the connection relationship of the first end cap in the electric drum sealing structure of this utility model embodiment; Figure 4This is a partial enlarged view of the positioning groove and positioning protrusion in the electric drum sealing structure of this utility model embodiment; Figure 5 This is a diagram showing the connection relationship of the second end cap in the electric drum sealing structure of this utility model embodiment; In the figure: 1-First end cover; 101-Insertion groove; 1011-Positioning groove; 2-Second end cover; 3-Drum body; 4-Motor fixing shaft; 5-First oil seal; 6-First bearing; 7-End cover plate; 701-Insertion component; 7011-Positioning protrusion; 8-Mounting fixing shaft; 9-Second oil seal; 10-Second bearing; 11-Pressure nut; 12-Support sleeve; 13-Bearing baffle; 14-Bearing pressure plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The purpose of this invention is to provide an electric roller sealing structure to solve the problems existing in the prior art, which has good sealing performance and is easy to install.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-5 As shown, this embodiment provides an electric roller sealing structure, including a first end cap 1 and a second end cap 2 made of nylon, which are respectively fixed to both ends of the roller body 3. Specifically, the first end cap 1 and the second end cap 2 are both inserted into the openings at both ends of the roller body 3, and both the first end cap 1 and the second end cap 2 are interference-fitted with the roller body 3. After the first end cap 1 and the second end cap 2 are inserted and fixed to the roller body 3, the tightness between the first end cap 1 and the second end cap 2 and the roller body 3 can be further enhanced by adhesive bonding (generally, after installation, they are not disassembled, so adhesive bonding is used for fixation).

[0023] from Figure 3As can be seen, the central through hole of the first end cover 1 is equipped with a motor fixing shaft 4. One end of the motor fixing shaft 4, located inside the drum body 3, is fixed to the fixed end of the drive motor inside the drum body 3 (i.e., the end of the drive motor without an output shaft). The motor fixing shaft 4 has an axial through-hole for the wires of the drive motor, thereby leading out the wires of the drive motor. The output shaft of the drive motor can be connected to the inner wall of the drum body 3 through a tensioning structure or a reducer. There are many specific transmission methods, all of which are existing technologies, so they will not be listed here, nor will their specific structures be described in detail. When the output shaft of the drive motor rotates, it can drive the drum body 3 to rotate. The outer wall of the motor fixing shaft 4 is equipped with a first oil seal 5 and a first bearing 6. The first end cover 1 has corresponding grooves that can accommodate the first oil seal 5 and the first bearing 6. The first oil seal 5 and the first bearing 6 are located between the motor fixing shaft 4 and the first end cover 1. An end cover plate 7 is connected to the side of the first end cover 1 away from the drum body 3. The end cover plate 7 and the first end cover 1 are separate structures, and they can be connected by plugging. Figure 3 As can be seen, the first oil seal 5 is closer to the end cover plate 7 than the first bearing 6.

[0024] like Figure 5 As shown, the center through hole of the second end cover 2 is provided with a mounting and fixing shaft 8. The outer end of the mounting and fixing shaft 8 (i.e., the end away from the roller body 3) can be fixed to the mounting bracket with screws, and the outer end of the second end cover 2 (i.e., the end away from the roller body 3) Figure 5 The outer wall of the right side of the shaft is provided with wedge-shaped teeth, which can be used to connect with a multi-wedge belt in actual use, thereby driving the multi-wedge belt to move. The outer wall of the mounting shaft 8 is provided with a second oil seal 9 and a second bearing 10. The second end cover 2 is provided with corresponding grooves for accommodating the second oil seal 9 and the second bearing 10, so that the second oil seal 9 and the second bearing 10 are located between the mounting shaft 8 and the second end cover 2.

[0025] In actual use, a first oil seal 5 and a second oil seal 9 are provided between the first end cover 1 and the second end cover 2 and the roller body 3. The first end cover 1 and the second end cover 2 are connected to the motor fixed shaft 4 and the mounting fixed shaft 8 respectively through the first oil seal 5 and the second oil seal 9, thereby effectively improving the sealing performance of the equipment and enabling the overall protection level of the equipment to reach IP66. Furthermore, the first end cover 1 can also be a separate structure from the end cover plate 7. In the actual assembly process, the first oil seal 5 can be directly installed from the outside before the end cover plate 7 is installed, thus facilitating the assembly of the equipment.

[0026] In this embodiment, a first sealing ring is provided between the first end cap 1 and the roller body 3, from Figure 3 As can be seen, a first sealing ring groove is provided on the outer wall of the first end cover 1, and the first sealing ring is installed in the first sealing ring groove, thereby improving the sealing between the first end cover 1 and the roller body 3.

[0027] Similarly, two second sealing rings are provided between the second end cover 2 and the roller body 3, such as... Figure 5 As shown, the outer wall of the second end cover 2 is provided with two second sealing ring grooves, and the two second sealing rings are respectively installed in the two second sealing ring grooves, thereby improving the sealing between the second end cover 2 and the roller body 3.

[0028] In this embodiment, the first oil seal 5 and the second oil seal 9 are both existing skeleton oil seals. Of course, those skilled in the art can also use other types of oil seal structures as needed, and are not limited to this one.

[0029] In this embodiment, as Figure 3 As shown, the first end cap 1 has an annular insertion groove 101, and correspondingly, the end cap plate 7 has an annular insertion component 701. In actual use, the insertion component 701 can be inserted into the insertion groove 101, thereby realizing the insertion and fixing between the end cap plate 7 and the first end cap 1.

[0030] In this embodiment, as Figure 4 As shown, the outer wall of the insertion component 701 is provided with a positioning protrusion 7011, and the inner wall of the insertion groove 101 is provided with a positioning groove 1011. When the insertion component 701 on the end cover plate 7 is inserted into the insertion groove 101, the positioning protrusion 7011 is located in the positioning groove 1011, thereby realizing the limiting and fixing between the end cover plate 7 and the first end cover 1, so as to further improve the tightness between the two.

[0031] In this embodiment, a bearing pressure plate 14 is provided between the first oil seal 5 and the first bearing 6, and the bearing pressure plate 14 is sleeved on the outer wall of the motor fixed shaft 4. Figure 3 As can be seen, the bearing pressure plate 14 is located on the left side of the first bearing 6, thereby limiting the left side of the first bearing 6. The outer wall of the motor fixing shaft 4 is provided with an outer flange, and the outer flange abuts against the right side of the first bearing 6. The bearing pressure plate 14 and the outer flange of the motor fixing shaft 4 are used to limit the first bearing 6 axially, thereby preventing the first bearing 6 from moving axially.

[0032] In this embodiment, a clamping nut 11 is threaded onto the motor mounting shaft 4. In actual use, the operator needs to install the motor mounting shaft 4 onto the motor bracket. The motor bracket has a through hole through which the motor mounting shaft 4 can pass. After the motor mounting shaft 4 passes through the through hole in the motor bracket, another clamping nut 11 (not shown in the figure) is then threaded onto the motor mounting shaft 4. Figure 3 The clamping nut 11 in the middle means that each of the through holes on the motor bracket is provided with a clamping nut 11. Tightening the clamping nuts 11 on both sides will achieve the fixed connection between the motor fixed shaft 4 and the motor bracket.

[0033] In this embodiment, from Figure 4 As can be seen, there are two second bearings 10, with a gap between them. Simultaneously, the outer wall of the mounting shaft 8 has two retaining ring grooves, and each retaining ring groove contains a retaining ring body, which is used to abut against one side of the second bearing 10. From... Figure 5 As can be seen from the figure, the right side of the second bearing 10 located on the left side of the figure abuts against a snap ring body, and the left side of the second bearing 10 located on the right side of the figure abuts against another snap ring body, thereby limiting the axial direction of the second bearing 10.

[0034] In this embodiment, a steel support sleeve 12 is provided between the two second bearings 10. The outer wall of the support sleeve 12 abuts against the inner wall of the second end cover 2. The support sleeve 12 is used to support the inner wall of the second end cover 2 to avoid the second end cover 2 from being dented and deformed due to excessive gap between the two second bearings 10.

[0035] In this embodiment, a bearing baffle 13 is bolted to the side of the second end cover 2 closest to the first end cover 1. The bearing baffle 13 can be connected with... Figure 5 The left side of the second bearing 10 on the left side of the middle abuts against it, thereby axially limiting it.

[0036] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model. 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 therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0039] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0040] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0041] It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0042] It should also be noted that in the embodiments of this application, the same reference numerals are used to denote the same component or the same part.

[0043] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0044] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electric drum sealing structure, characterized in that: It includes a first end cap (1) and a second end cap (2), which are respectively fixed to both ends of the roller body (3); The first end cover (1) has a motor fixing shaft (4) in the center through hole. The outer wall of the motor fixing shaft (4) is provided with a first oil seal (5) and a first bearing (6). The first end cover (1) is connected to an end cover plate (7) on the side away from the roller body (3). The first oil seal (5) is closer to the end cover plate (7) than the first bearing (6). The second end cap (2) has a central through hole with a mounting shaft (8), and the outer wall of the mounting shaft (8) is provided with a second oil seal (9) and a second bearing (10).

2. The electric drum sealing structure according to claim 1, characterized in that: A first sealing ring is provided between the first end cap (1) and the roller body (3); A second sealing ring is provided between the second end cap (2) and the roller body (3).

3. The electric drum sealing structure according to claim 1, characterized in that: Both the first oil seal (5) and the second oil seal (9) are skeleton oil seals.

4. The electric drum sealing structure according to claim 1, characterized in that: The first end cap (1) is provided with an annular insertion groove (101), and the end cap cover plate (7) is provided with an annular insertion component (701), which can be inserted into the insertion groove (101).

5. The electric drum sealing structure according to claim 4, characterized in that: The outer wall of the plug-in component (701) is provided with a positioning protrusion (7011), and the inner wall of the plug-in groove (101) is provided with a positioning groove (1011). The positioning protrusion (7011) can be located in the positioning groove (1011).

6. The electric drum sealing structure according to claim 1, characterized in that: A bearing pressure plate (14) is provided between the first oil seal (5) and the first bearing (6), and the bearing pressure plate (14) is sleeved on the outer wall of the motor fixed shaft (4).

7. The electric drum sealing structure according to claim 1, characterized in that: A clamping nut (11) is threaded onto the motor fixed shaft (4).

8. The electric drum sealing structure according to claim 1, characterized in that: The second bearing (10) is provided in two parts. The outer wall of the mounting and fixing shaft (8) is provided with two snap ring grooves. Each snap ring groove contains a snap ring body, which is used to abut against one side of the second bearing (10).

9. The electric drum sealing structure according to claim 8, characterized in that: A support sleeve (12) is provided between the two second bearings (10), and the outer wall of the support sleeve (12) abuts against the inner wall of the second end cap (2).

10. The electric drum sealing structure according to claim 1, characterized in that: The second end cap (2) is fixed with a bearing baffle (13) on the side near the first end cap (1), and the bearing baffle (13) can abut against a second bearing (10).

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