Drum body positioning apparatus and drum body structure assembling method

Abstract

A drum body positioning apparatus and a drum body structure assembling method. The drum body positioning apparatus comprises a first support assembly (1); the first support assembly (1) comprises a first adjustment support member (11), a first support body (12), and a positioning shaft (13); the first adjustment support member (11) is movably connected to the first support body (12) in a first direction; the positioning shaft (13) is movably connected to the first support body (12) in a second direction; the first support body (12) can be embedded in a rotating drum (102), so that the first adjustment support member (11) abuts against and supports the inner cavity wall (1021) of the rotating drum (102); the first adjustment support member (11) has a first arc-shaped surface (111) to fit the inner cavity wall (1021); and the end of the positioning shaft (13) distant from the first support body (12) is detachably connected to a rotating bearing (103). The drum body positioning apparatus can solve the problems in a clothes dryer that the outer drum is prone to deformation during installation, and the assembly cost is high due to poor universality of the existing positioning structure and its inability to be applied to external drums of different sizes.

Description

Cylinder positioning device and cylinder structure assembly method

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 4, 2024, with application number 202410015148.6, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of production and assembly technology, for example, to a cylinder positioning device and a cylinder structure assembly method. Background Art

[0003] A clothes dryer is a household appliance that uses heat to instantly evaporate the moisture from washed clothes, significantly improving users' quality of life. To accelerate drying, a dryer requires a rotating drum that rotates and spreads the clothes, achieving rapid drying. Existing dryers typically have an inner and outer drum. The installation accuracy of the inner drum significantly impacts the dryer's drying performance. The runout accuracy of both the inner and outer drums must be minimal, and the gap between them must be within a specified range to ensure a seal between the two drums and, consequently, the dryer's drying performance. During dryer assembly, the outer drum is typically installed first, followed by the inner drum. The accuracy of the outer drum's installation determines the accuracy of the inner drum's installation. During installation, the outer drum lacks support and positioning, making it susceptible to deformation due to its own weight. Furthermore, external forces during riveting to other structural components can also cause deformation. Some clothes dryers use a simple positioning structure to support the outer drum, but the positioning structure has a single function. Due to the variety of dryer models, the diameter and depth of the outer drum are different, and the positioning structure has poor versatility, resulting in high assembly costs. Summary of the Invention

[0004] The present application provides a drum positioning device, which can solve the problem that the dryer is easily deformed during the installation of the outer drum, and the existing positioning structure has poor versatility and cannot be applied to outer drums of different sizes, resulting in high assembly costs.

[0005] The cam is connected to the support frame of the driving mechanism, and the cam is connected to the support frame by the support frame, and the cam is connected to the support frame by the support frame.

[0006] In one embodiment, the first supporting body is a circular ring, and the first supporting body and the rotating drum are coaxially arranged.

[0007] In one embodiment, the first support body is a circular ring, and the first support body and the rotating drum are coaxially arranged. There are multiple first adjustment support members, and the multiple first adjustment support members are distributed at intervals along the circumference of the first support body.

[0008] In one embodiment, the first support assembly further includes a plurality of positioning rods, which are intertwined with each other in a mesh shape and connected to the inner annular surface of the first support body.

[0009] In one embodiment, the first support assembly further comprises a plurality of support rods, each of which is arranged obliquely and fixedly connected to the first support body at one end and movably connected to the positioning shaft at the other end, wherein the plurality of support rods are arranged at intervals along the circumference of the positioning shaft; or

[0010] The first support assembly further includes a support bearing, the support bearing is connected to the first support body and is coaxially arranged with the rotating bearing, and the support bearing is arranged to support the positioning shaft; or,

[0011] The first support body is provided with a plurality of weight-reducing grooves, and reinforcing ribs are provided between adjacent weight-reducing grooves; or,

[0012] The first support assembly further includes a plurality of support rods and support bearings, wherein the support rods are arranged obliquely and one end of the support rods is fixedly connected to the first support body and the other end is movably connected to the positioning shaft, the plurality of support rods are arranged at intervals along the circumference of the positioning shaft, the support bearings are connected to the first support body and are coaxially arranged with the rotating bearing, and the support bearings are configured to support the positioning shaft; or,

[0013] The first support assembly further includes a plurality of support rods and a plurality of weight-reducing grooves are formed on the first support body, the support rods are arranged obliquely and one end is fixedly connected to the first support body and the other end is movably connected to the positioning shaft, the plurality of support rods are arranged at intervals along the circumference of the positioning shaft, and reinforcing ribs are provided between adjacent weight-reducing grooves; or,

[0014] The first support assembly further includes a support bearing and a plurality of weight-reducing grooves are provided on the first support body, the support bearing is connected to the first support body and is coaxially arranged with the rotating bearing, the support bearing is arranged to support the positioning shaft, and reinforcing ribs are provided between adjacent weight-reducing grooves; or,

[0015] The first support assembly also includes multiple support rods and support bearings, and the first support body is provided with multiple weight-reducing grooves. The support rod is arranged at an angle and one end is fixedly connected to the first support body, and the other end is movably connected to the positioning shaft. Multiple support rods are arranged at intervals along the circumference of the positioning shaft. The support bearing is connected to the first support body and is coaxially arranged with the rotating bearing. The support bearing is arranged to support the positioning shaft, and reinforcing ribs are provided between adjacent weight-reducing grooves.

[0016] In one embodiment, the cylinder positioning device also includes a second support assembly, which is coaxial with the first support assembly and spaced apart. The first support assembly is configured to support one end of the rotating cylinder toward the rotating bearing, and the second support assembly is configured to support the end of the rotating cylinder away from the rotating bearing.

[0017] In one embodiment, the second support assembly includes a second support body and a second adjustment support member connected to the second support body. The second support body can be embedded in the rotating drum so that the second adjustment support member abuts and supports the inner cavity wall. The second adjustment support member has a second curved surface. The second adjustment support member can move radially along the second support body so that the second curved surface fits and abuts the inner cavity wall.

[0018] In one embodiment, the second support assembly further includes a limiting member connected to the second support body, the limiting member abutting against an end surface of the rotating drum away from the rotating bearing to limit the second support body from moving along the inner cavity wall; or,

[0019] There are multiple second adjustment supports, and the multiple second adjustment supports are distributed at intervals along the circumference of the second support body; or,

[0020] There are multiple second adjustment supports, and each second support assembly also includes a limiter, which is connected to the second support body. The limiter abuts the end surface of the rotating drum away from the rotating bearing to limit the movement of each second support body along the inner cavity wall.

[0021] The present application provides a method for assembling a cylinder structure. Using the cylinder positioning device as described above, the positioning and installation accuracy of the rotating cylinder can be improved, and the method is applicable to cylinder structures of different sizes.

[0022] The present application provides a method for assembling a cylindrical structure using the cylindrical positioning device described above. The method includes:

[0023] Assemble the shell;

[0024] Placing the drum in the housing, and positioning and supporting the drum by the drum positioning device so that the rotating bearings of the drum and the housing remain coaxial;

[0025] Connecting the rotating drum and the rotating bearing using fasteners;

[0026] The cylinder positioning device is removed, the inner cylinder is embedded in the rotating cylinder, and the inner cylinder and the rotating cylinder are connected.

[0027] In one embodiment, the rotating drum includes a first rotating drum and a second rotating drum, the housing includes a first bottom plate and a second bottom plate spaced apart from each other from bottom to top, the first bottom plate is configured to support the first rotating drum, and the second bottom plate is configured to support the second rotating drum, the housing is respectively provided with a first rotating bearing and a second rotating bearing, the housing is provided with two groups of the cylinder positioning device, the rotating drum is placed in the housing, and the rotating drum is positioned and supported by the cylinder positioning device so that the rotating bearings of the rotating drum and the housing remain coaxial, including:

[0028] Placing the first rotating drum above the first bottom plate, and positioning and supporting the first rotating drum by a set of the drum positioning devices so that the first rotating drum and the first rotating bearing remain coaxial;

[0029] The second rotating drum is placed above the second bottom plate, and the second rotating drum is positioned and supported by another set of the drum positioning devices, so that the second rotating drum and the second rotating bearing remain coaxial. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of a cylinder positioning device connected to a cylinder structure according to an embodiment of the present application;

[0031] FIG2 is a cross-sectional view of the structure of the cylinder positioning device connected to the cylinder structure provided in an embodiment of the present application;

[0032] FIG3 is a schematic structural diagram of a first support assembly provided in an embodiment of the present application at a viewing angle;

[0033] FIG4 is a schematic structural diagram of the first support assembly provided in an embodiment of the present application from another perspective;

[0034] FIG5 is a schematic structural diagram of a second support assembly provided in an embodiment of the present application at a viewing angle;

[0035] FIG6 is a schematic structural diagram of a second support assembly provided in an embodiment of the present application from another perspective;

[0036] FIG7 is a partial structural diagram of the cylinder structure provided in an embodiment of the present application.

[0037] In the figure: 1. First support assembly; 11. First adjustment support member; 111. First curved surface; 12. First support body; 121. Weight-reducing groove; 122. Reinforcing rib; 13. Positioning shaft; 14. Positioning rod; 15. Support rod; 16. Support bearing; 2. Second support assembly; 21. Second support body; 22. Second adjustment support member; 221. Second curved surface; 23. Limiting member; 100. Cylinder structure; 101. Shell; 1011. First bottom plate; 1012. Second bottom plate; 102. Rotating drum; 1021. Inner cavity wall; 1022. First rotating drum; 1023. Second rotating drum; 103. Rotating bearing. DETAILED DESCRIPTION

[0038] The present application is described below in conjunction with the accompanying drawings and embodiments. It is understood that the embodiments described herein are merely intended to explain the present application, rather than to limit the present application. For ease of description, the accompanying drawings only show portions, rather than all, of the structure relevant to the present application.

[0039] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application according to the circumstances.

[0040] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature's horizontal height is higher than the second feature's horizontal height. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature's horizontal height is lower than the second feature's horizontal height.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., regarding orientations or positions, are based on the orientations or positions shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0042] Example 1

[0043] As shown in Figures 1 to 6, this first embodiment provides a drum positioning device configured to position and support a drum structure 100. The drum structure 100 includes a housing 101 and a rotating drum 102 disposed within the housing 101. The rotating drum 102 has two through-holes, and the housing 101 has a rotating bearing 103 coaxially disposed with the rotating drum 102. The drum structure 100 can be used in clothing processing equipment such as dryers and washing machines, and this first embodiment does not limit the application of the drum structure 100.

[0044] The cylinder positioning device includes a first support assembly 1, and the first support assembly 1 includes a first adjustment support 11, a first support body 12 and a positioning shaft 13. The first adjustment support 11 can be movably connected to the first support body 12 along a first direction, and the first support body 12 can be embedded in the rotating drum 102 so that the first adjustment support 11 abuts against the inner cavity wall 1021 supporting the rotating drum 102. The first adjustment support 11 has a first curved surface 111 to fit the inner cavity wall 1021, thereby preventing the roundness of the rotating drum 102 from being affected by gravity and riveting force, thereby reducing the deformation of the rotating drum 102. The first direction extends along the radial direction of the rotating drum 102. When the diameter of the rotating drum 102 changes, the radial position of the first adjustment support 11 can be adjusted so that it can always abut against the inner cavity wall 1021, and has a wide range of adaptability.

[0045] The positioning shaft 13 is movably connected to the first support body 12 along the second direction. The end of the positioning shaft 13 away from the first support body 12 is detachably connected to the rotating bearing 103. With the positioning support of the positioning shaft 13, the coaxiality of the rotating drum 102 and the rotating bearing 103 is ensured, thereby improving the positional accuracy of the rotating drum 102 and reducing the runout error of the rotating drum 102. The second direction extends along the axial direction of the rotating drum 102. When the depth of the rotating drum 102 changes, that is, when the axial length of the rotating drum 102 changes, the length of the positioning shaft 13 relative to the first support body 12 can be adjusted to meet the required change in the distance between the rotating drum 102 and the rotating bearing 103. Therefore, the drum positioning device can accommodate the installation of rotating drums 102 of different sizes within the housing 101, has good versatility and is easy to use, thereby reducing assembly costs. Moreover, the first adjustment support 11 and the positioning shaft 13 are respectively configured to reduce the roundness error and coaxiality error of the drum 102, reduce the deformation of the drum 102, and improve the overall installation accuracy of the drum 102, which is conducive to improving the drying performance of the dryer.

[0046] Optionally, the first support body 12 is a circular ring body, and the first support body 12 and the rotating drum 102 are coaxially arranged. The circular ring body is not easy to deform and has good structural stability. The first support body 12 is made of aluminum alloy, which is light in weight, avoiding the impact of its own weight on the rotating drum 102, and has sufficient structural strength to support the rotating drum 102. The first adjustment support 11 can be made of polyformaldehyde plastic (POM plastic). Polyformaldehyde plastic has excellent comprehensive properties and good stability. It can achieve high dimensional accuracy through machining, thereby ensuring the positioning support accuracy of the rotating drum 102; moreover, because its hardness is less than that of metal material, it avoids scratching the inner cavity wall 1021 during direct contact with the rotating drum 102.

[0047] Optionally, there are multiple first adjustment supports 11, each of which is spaced apart along the circumference of the first support body 12. This structure of spaced apart first adjustment supports 11 can reduce weight while providing support along the entire circumference of the rotating drum 102. To ensure support stability, the sum of the central angles of the multiple first adjustment supports 11 is greater than 180°, so that the first curved surfaces 111 of the multiple first adjustment supports 11 have sufficient support area.

[0048] There are various structures for adjusting the radial position of the first adjustment support 11. In the first embodiment, a connection hole is formed on the first adjustment support 11, and a plurality of adjustment holes are radially spaced apart on the first support body 12. Fasteners (not shown) are fastened within the connection and adjustment holes to achieve connection between the first adjustment support 11 and the first support body 12. When the connection holes of the first adjustment support 11 correspond to adjustment holes at different positions, the position of the first adjustment support 11 in the first direction can be adjusted, and the adjustment method is relatively simple.

[0049] Optionally, the first support assembly 1 further includes a plurality of positioning rods 14, which intersect each other in a mesh pattern and are connected to the inner annular surface of the first support body 12 to increase the structural strength of the first support body 12 and prevent deformation of the first support body 12. The plurality of positioning rods 14 can be connected to the center of the first support body 12 in a divergent mesh pattern or in a honeycomb mesh pattern, and are not limited to the drawings of this embodiment.

[0050] Optionally, the first support assembly 1 further includes a plurality of support rods 15, which are arranged at an angle and fixedly connected to the first support body 12 at one end and movably connected to the positioning shaft 13 at the other end. The plurality of support rods 15 are arranged at intervals along the circumference of the positioning shaft 13. Since the positioning shaft 13 is a long rod, the plurality of support rods 15 can provide multi-point support along the circumference of the positioning shaft 13, thereby improving the stability of the positioning shaft 13.

[0051] Positioning shaft 13 is provided with a slide groove (not shown) extending along the axial direction of positioning shaft 13. The end of support rod 15, distal from first support body 12, is slidably connected within the slide groove. As positioning shaft 13 moves axially, support rod 15 slides within the slide groove accordingly and remains fixed, maintaining support for positioning shaft 13. Multiple support rods 15 are evenly spaced, providing more stable support for positioning shaft 13.

[0052] Optionally, the first support assembly 1 further includes a support bearing 16 connected to the first support body 12 and coaxially disposed with the rotating bearing 103. The support bearing 16 is configured to support the positioning shaft 13, facilitating smoother axial position adjustment of the positioning shaft 13. After the positioning shaft 13 is axially adjusted in length, it can be locked within the rotating bearing 103 using a nut to prevent axial movement of the positioning shaft 13.

[0053] Optionally, the first support body 12 is provided with a plurality of weight-reducing grooves 121, with reinforcing ribs 122 provided between adjacent weight-reducing grooves 121. The weight-reducing grooves 121 make the drum positioning device lighter, easier to use, and prevent the shape and position accuracy of the drum 102 from being affected by its own weight.

[0054] Optionally, the drum positioning device further includes a second support assembly 2, which is coaxial with and spaced apart from the first support assembly 1. The first support assembly 1 is configured to support the end of the drum 102 facing the rotating bearing 103, and the second support assembly 2 is configured to support the end of the drum 102 away from the rotating bearing 103. Because the opening of the drum 102 is most susceptible to deformation, the second support assembly 2 and the first support assembly 1 respectively support the openings at both ends of the drum 102, further reducing the risk of deformation of the drum 102.

[0055] Optionally, the second support assembly 2 includes a second support body 21 and a second adjustment support member 22 connected to the second support body 21. The second support body 21 can be embedded in the rotating drum 102 so that the second adjustment support member 22 abuts against the inner cavity wall 1021. The second adjustment support member 22 has a second curved surface 221. The second adjustment support member 22 can move radially along the second support body 21 so that the second curved surface 221 abuts against the inner cavity wall 1021, thereby improving the roundness accuracy of the other end of the rotating drum 102.

[0056] Optionally, the second support assembly 2 further includes a stopper 23 connected to the second support body 21. The stopper 23 abuts the end surface of the rotating drum 102 facing away from the rotating bearing 103 to restrict movement of the second support body 21 along the inner cavity wall 1021. The stopper 23 has an L-shaped cross-section, with one side connected to the second support body 21 and the other side abutting the end surface of the rotating drum 102. The stopper 23 prevents displacement of the second support body 21, providing stable support for the rotating drum 102.

[0057] It should be noted that when the rotating drum 102 is the outer drum of a clothes dryer, it has a felt piece (not shown) on its end facing the rotating bearing 103. When the first support assembly 1 is pushed from the end of the rotating drum 102 facing away from the rotating bearing 103, the end surface of the first support body 12 abuts the felt piece to achieve positioning. Of course, in other embodiments, the first support assembly 1 can also be provided with a similar stopper 23, which will not be described in detail in this embodiment.

[0058] Optionally, multiple second adjustment supports 22 are provided, spaced apart along the circumference of the second support body 21, providing multi-zone support and positioning for the other end of the drum 102. The second adjustment supports 22 are also made of polyoxymethylene plastic, ensuring safety and reliability. To ensure both lightweight and high strength, the second support body 21 also includes weight-reducing grooves 121, with reinforcing ribs 122 positioned between adjacent weight-reducing grooves 121.

[0059] Example 2

[0060] The second embodiment of the present application provides a cylindrical structure assembly method, which uses the cylindrical positioning device of the first embodiment to assist the assembly process of the cylindrical structure 100. The cylindrical structure assembly method includes the following steps:

[0061] Step S1, assembling the housing 101;

[0062] As an example, the housing 101 includes side panels and a bottom panel, which are arranged to form a frame structure. This embodiment does not limit the structure of the housing 101.

[0063] Step S2: After the housing 101 is assembled, the drum 102 is placed in the housing 101 and the drum 102 is positioned and supported by the drum positioning device so that the drum 102 and the rotating bearing 103 of the housing 101 remain coaxial;

[0064] Step S3: Use fasteners to connect the drum 102 and the housing 101. Fasteners include, but are not limited to, screws. Other connection methods include welding, bonding, etc., to achieve multiple connections between the drum 102 and the housing 101. During the connection and assembly process, the drum 102 is effectively supported and positioned by the drum positioning device, which reduces the impact of external forces on the drum 102, reduces deformation of the drum 102, and ensures that the roundness and runout accuracy of the assembled drum 102 meet the requirements.

[0065] Step S4: After the drum 102 and housing 101 are assembled, and since the drum 102 has reached a stable state through multiple connections, the drum positioning device is removed to avoid interfering with the installation of the inner drum. The inner drum (not shown) is then embedded within the drum 102 and connected to the drum 102. The drum positioning device is reusable and can adjust the position of the positioning shaft 13 and the first adjustment support member 11 relative to the first support body 12 accordingly as the dimensions of the drum 102 and housing 101 change, thus meeting the assembly requirements of different sizes of drum structures 100.

[0066] Optionally, for some washer-dryers, as shown in FIG7 , they have a first drum 1022 and a second drum 1023 arranged vertically. Accordingly, the housing 101 includes a first bottom plate 1011 and a second bottom plate 1012 spaced apart from each other from bottom to top. The first bottom plate 1011 is configured to support the first drum 1022, and the second bottom plate 1012 is configured to support the second drum 1023. The housing 101 is provided with a first rotating bearing and a second rotating bearing, respectively, and two sets of drum positioning devices are provided. Step S2 includes the following steps:

[0067] Step S21: Place the first rotating drum 1022 on the first bottom plate 1011, and position and support the first rotating drum 1022 using a set of drum positioning devices so that the first rotating drum 1022 and the first rotating bearing remain coaxial;

[0068] Step S22: Place the second rotating drum 1023 above the second bottom plate 1012, and position and support the second rotating drum 1023 through another set of drum positioning devices, so that the second rotating drum 1023 and the second rotating bearing remain coaxial.

[0069] In the above steps, the first rotating drum 1022 is arranged first, which can reduce the influence of the second rotating drum 1023 above it, and the first rotating drum 1022 is positioned and supported by a group of drum positioning devices before the second rotating drum 1023 is arranged; then, another group of drum positioning devices is set for the second rotating drum 1023 above to position and support it, thereby reducing the mutual influence between the first rotating drum 1022 and the second rotating drum 1023 during their respective installation processes, so that both the first rotating drum 1022 and the second rotating drum 1023 can achieve better assembly accuracy.

Claims

1. The cylinder positioning device is configured to position and support a cylinder structure (100), the cylinder structure (100) includes a housing (101) and a rotating cylinder (102) disposed within the housing (101), both ends of the rotating cylinder (102) are through, the housing (101) has a rotating bearing (103) coaxially arranged with the rotating cylinder (102), the cylinder positioning device includes a first support assembly (1), the first support assembly (1) includes a first adjusting support member (11), a first support body (12) and a positioning shaft (13), the first adjusting support member (11) is movably connected to the first support body (12) along a first direction, the positioning shaft (13) is movably connected to the first support body (12) along a second direction, the first support body (12) can be embedded within the rotating cylinder (102) so that the first adjusting support member (11) abuts and supports the inner cavity wall (1021) of the rotating cylinder (102), the first adjusting support member (11) has a first arc surface (111) to fit the inner cavity wall (1021), and one end of the positioning shaft (13) away from the first support body (12) is detachably connected to the rotating bearing (103); the first direction extends along the radial direction of the rotating cylinder (102), and the second direction extends along the axial direction of the rotating cylinder (102).

2. The cylinder positioning device according to claim 1, wherein, The first support body (12) is an annular body, and the first support body (12) and the rotating cylinder (102) are coaxially arranged.

3. The cylinder positioning device according to claim 1, wherein, The first support body (12) is an annular body, and the first support body (12) and the rotating cylinder (102) are coaxially arranged. There are a plurality of the first adjusting support members (11), and the plurality of the first adjusting support members (11) are circumferentially spaced apart along the first support body (12).

4. The cylinder positioning device according to claim 2 or 3, wherein, The first support assembly (1) further includes a plurality of positioning rods (14), and the plurality of positioning rods (14) intersect with each other to form a net and are connected to the inner ring surface of the first support body (12).

5. The cylinder positioning device according to claim 1, wherein, The first support assembly (1) further includes a plurality of support rods (15), the support rods (15) are inclined and one end is fixedly connected to the first support body (12), and the other end is movably connected to the positioning shaft (13), and the plurality of support rods (15) are circumferentially spaced apart along the positioning shaft (13); or, The first support assembly (1) further includes a support bearing (16), the support bearing (16) is connected to the first support body (12) and is coaxially arranged with the rotating bearing (103), and the support bearing (16) is configured to support the positioning shaft (13); or, A plurality of weight reduction grooves (121) are formed on the first support body (12), and reinforcing ribs (122) are provided between adjacent weight reduction grooves (121); or, The first support assembly (1) further includes a plurality of support rods (15) and a support bearing (16). The support rods (15) are inclined and one end is fixedly connected to the first support body (12), and the other end is movably connected to the positioning shaft (13). The plurality of support rods (15) are arranged at intervals along the circumferential direction of the positioning shaft (13). The support bearing (16) is connected to the first support body (12) and is coaxially arranged with the rotating bearing (103). The support bearing (16) is configured to support the positioning shaft (13); or, The first support assembly (1) further includes a plurality of support rods (15), and a plurality of weight-reducing grooves (121) are formed in the first support body (12). The support rods (15) are inclined and one end is fixedly connected to the first support body (12), and the other end is movably connected to the positioning shaft (13). The plurality of support rods (15) are arranged at intervals along the circumferential direction of the positioning shaft (13). Reinforcing ribs (122) are arranged between adjacent weight-reducing grooves (121); or, The first support assembly (1) further includes a support bearing (16), and a plurality of weight-reducing grooves (121) are formed in the first support body (12). The support bearing (16) is connected to the first support body (12) and is coaxially arranged with the rotating bearing (103). The support bearing (16) is configured to support the positioning shaft (13), and reinforcing ribs (122) are arranged between adjacent weight-reducing grooves (121); or, The first support assembly (1) further includes a plurality of support rods (15) and a support bearing (16), and a plurality of weight-reducing grooves (121) are formed in the first support body (12). The support rods (15) are inclined and one end is fixedly connected to the first support body (12), and the other end is movably connected to the positioning shaft (13). The plurality of support rods (15) are arranged at intervals along the circumferential direction of the positioning shaft (13). The support bearing (16) is connected to the first support body (12) and is coaxially arranged with the rotating bearing (103). The support bearing (16) is configured to support the positioning shaft (13), and reinforcing ribs (122) are arranged between adjacent weight-reducing grooves (121).

6. The cylinder positioning device according to claim 1 further includes a second support assembly (2). The second support assembly (2) and the first support assembly (1) are coaxially and spaced apart. The first support assembly (1) is configured to support one end of the rotating cylinder (102) facing the rotating bearing (103), and the second support assembly (2) is configured to support the other end of the rotating cylinder (102) away from the rotating bearing (103).

7. The cylinder positioning device according to claim 6, wherein, The second support assembly (2) comprises a second support body (21) and a second adjustment support member (22) connected to the second support body (21); the second support body (21) can be embedded in the rotating drum (102) so that the second adjustment support member (22) abuts against the inner cavity wall (1021); the second adjustment support member (22) has a second arcuate surface (221); the second adjustment support member (22) can move along the radial direction of the second support body (21) so that the second arcuate surface (221) abuts against the inner cavity wall (1021).

8. The cylinder positioning device according to claim 7, wherein, The second support assembly (2) further comprises a limiting member (23), the limiting member (23) being connected to the second support body (21), the limiting member (23) abutting against an end surface of the rotating drum (102) facing away from the rotating bearing (103) to limit the second support body (21) from moving along the inner cavity wall (1021); or, The second adjustment support members (22) include a plurality of second adjustment support members (22), and the plurality of second adjustment support members (22) are distributed at intervals along the circumference of the second support body (21); or, There are multiple second adjustment support members (22), and each second support assembly (2) also includes a limit member (23), wherein the limit member (23) is connected to the second support body (21), and the limit member (23) abuts against the end surface of the rotating cylinder (102) away from the rotating bearing (103) to limit the movement of each second support body (21) along the inner cavity wall (1021).

9. A method for assembling a cylinder structure, using the cylinder positioning device according to any one of claims 1 to 8, the method for assembling a cylinder structure comprising: Assembling the housing (101); The rotating drum (102) is placed in the housing (101), and the rotating drum (102) is positioned and supported by the cylinder positioning device, so that the rotating drum (102) and the rotating bearing (103) of the housing (101) are kept coaxial; Using fasteners to connect the rotating drum (102) and the housing (101); The cylinder positioning device is removed, the inner cylinder is embedded in the rotating cylinder (102), and the inner cylinder and the rotating cylinder (102) are connected.

10. The method for assembling the cylindrical structure according to claim 9, wherein, The rotating drum (102) comprises a first rotating drum (1022) and a second rotating drum (1023); the shell (101) comprises a first bottom plate (1011) and a second bottom plate (1012) arranged at intervals from bottom to top; the first bottom plate (1011) is arranged to carry the first rotating drum (1022); the second bottom plate (1012) is arranged to carry the second rotating drum (1023); the shell (101) is respectively provided with a first rotating bearing and a second rotating bearing; the cylinder positioning device is provided with two groups; the rotating drum (102) is placed in the shell (101), and the rotating drum (102) is positioned and supported by the cylinder positioning device so that the rotating drum (102) and the rotating bearing (103) of the shell (101) remain coaxial, comprising the following steps: Place the first rotating cylinder (1022) above the first base plate (1011), and position and support the first rotating cylinder (1022) through a set of the cylinder positioning devices, so that the first rotating cylinder (1022) and the first rotating bearing are coaxial; Place the second rotating cylinder (1023) above the second base plate (1012), and position and support the second rotating cylinder (1023) through another set of the cylinder positioning devices, so that the second rotating cylinder (1023) and the second rotating bearing are coaxial.

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