Drum device of a washing machine and washing machine

Abstract

The present application relates to the technical field of clothes processing equipment, and particularly provides a drum device of a washing machine and the washing machine, aiming at solving the problem of large size and large vibration and noise of the drum device of the existing multi-drum washing machine. For this purpose, the drum device comprises: an upper drum module, which is installed at the upper part of a cabinet, comprises a first upper drum and a second upper drum fixedly connected, and the first upper drum and the second upper drum are symmetrically arranged along the horizontal direction; a lower drum module, which is installed below the upper drum module and fixedly connected with the upper drum module, and the diameter of the drum of the lower drum module is greater than that of the first upper drum and the second upper drum; and a damping assembly, which is provided with multiple groups, and the multiple groups of damping assemblies are arranged at intervals between the lower drum module and the bottom plate of the cabinet, and each group of damping assemblies comprises a compression spring and a shock absorber. Through such arrangement, the damping and noise reduction effect is improved, the structure of the drum assembly is more simple and compact, and the space occupation is reduced.

Description

Technical Field

[0001] This invention relates to the field of clothing handling equipment technology, specifically providing a drum device for a washing machine and a washing machine. Background Technology

[0002] In recent years, with the development of science and technology and the improvement of people's living standards, washing machines have long been a household appliance, becoming an indispensable part of home life. In order to meet the increasingly diverse needs of users, manufacturers have developed multi-drum structures based on single-drum structures, which improves the washing efficiency of clothes.

[0003] However, the existing multi-drum washing machines have a high center of gravity and a large size of drum assembly, which increases the size of the machine body beyond the conventional standard, restricting the installation and placement of the washing machine, and also causing excessive vibration and noise.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, that the existing multi-drum washing machine has a high center of gravity and a large size of drum assembly, which leads to an increase in the size of the machine body, exceeding the conventional standard, which restricts the installation and placement of the washing machine, and also causes excessive vibration and noise.

[0006] In a first aspect, the present invention provides a drum assembly for a washing machine, the drum assembly being installed inside the washing machine housing, comprising: a drum assembly including at least one drum; and a shock-absorbing assembly, wherein multiple sets of the shock-absorbing assembly are provided, the multiple sets of the shock-absorbing assembly being spaced apart between the drum assembly and the bottom plate of the housing, and both ends of the multiple sets of the shock-absorbing assembly being respectively connected to the drum assembly and the bottom plate, and each set of the shock-absorbing assembly including a compression spring and a shock absorber.

[0007] In the preferred embodiment of the above-mentioned roller device, the roller assembly includes an upper roller module and a lower roller module that are fixedly connected. The upper roller module is disposed above the lower roller module, and the two ends of the plurality of shock-absorbing components are respectively connected to the lower roller module and the base plate.

[0008] In the preferred embodiment of the above-mentioned roller device, the roller device further includes a counterweight assembly, which is installed on the lower roller module.

[0009] In the preferred embodiment of the above-mentioned roller device, the counterweight assembly includes a front counterweight component, which is installed at the bottom front end and / or on both sides of the lower roller module.

[0010] In the preferred embodiment of the above-mentioned roller device, the counterweight assembly further includes a rear counterweight component, which is installed at the rear bottom and / or both sides of the lower roller module, and the weight of the rear counterweight component is less than the weight of the front counterweight component.

[0011] In the preferred embodiment of the above-mentioned roller device, the axis of the compression spring and the axis of the shock absorber both point to the rotation axis of the lower drum module and are perpendicular to the rotation axis of the lower drum module.

[0012] In the preferred embodiment of the above-mentioned roller device, the upper cylinder module includes a first upper cylinder, a second upper cylinder, and a connecting member. The first upper cylinder and the second upper cylinder are symmetrically arranged on both sides of the top of the lower cylinder module. The two ends of the connecting member are fixedly connected to the first upper cylinder and the second upper cylinder, respectively. The bottom of the first upper cylinder and the second upper cylinder are respectively provided with a first support structure and a second support structure, and the first support structure and the second support structure are fixedly connected to both sides of the top of the lower cylinder module, respectively.

[0013] In the preferred embodiment of the above-mentioned roller device, vibration isolation pads are provided at the connection points between the first upper cylinder, the second upper cylinder and the connecting member, and at the connection points between the first upper cylinder, the second upper cylinder and the lower cylinder module.

[0014] In the preferred embodiment of the above-mentioned roller device, the shock-absorbing components are provided in four sets, the bottom ends of the four sets of shock-absorbing components are respectively connected to the four corners of the base plate, and the top ends of the four sets of shock-absorbing components are respectively connected to the corresponding positions at the bottom of the roller assembly; and / or the two ends of the compression spring are respectively fixedly connected to the roller assembly and the base plate, and the two ends of the shock absorber are respectively pivotally connected to the roller assembly and the base plate; and / or the compression spring and the shock absorber are arranged side by side or the compression spring is sleeved on the shock absorber.

[0015] In a second aspect, the present invention provides a washing machine comprising the aforementioned drum assembly.

[0016] With the above technical solution adopted, the drum device of the present invention is installed in the washing machine cabinet and includes: a drum assembly, the drum assembly including at least one drum; and multiple sets of shock-absorbing components, which are spaced apart between the drum assembly and the bottom plate of the cabinet, with both ends of the multiple sets of shock-absorbing components connected to the drum assembly and the bottom plate respectively. Each set of shock-absorbing components includes a compression spring and a shock absorber. By setting the shock-absorbing components as a combination of compression springs and shock absorbers, and installing them all at the bottom of the drum assembly, compared with the traditional combination of upper suspension springs and lower shock absorbers, the compression springs provide better support and can shorten the stroke to save vertical space. At the same time, the upper shock-absorbing springs in the drum assembly can be eliminated, increasing the usable space in the upper part of the cabinet and saving costs.

[0017] Furthermore, the drum assembly of the present invention includes an upper drum module and a lower drum module fixedly connected, with the upper drum module positioned above the lower drum module. The two ends of multiple sets of shock-absorbing components are respectively connected to the lower drum module and the base plate. This arrangement allows for a more compact multi-drum structure, thereby controlling the machine's height and facilitating the installation and placement of the washing machine.

[0018] Furthermore, the roller device of the present invention also includes a counterweight assembly, which is mounted on the lower roller module. This arrangement increases the total weight and inertia of the roller device, making it less susceptible to the influence of the inner roller's rotation and reducing vibrations caused by the eccentric rotation of the inner roller. It also lowers the center of gravity of the entire roller device, making it more stable.

[0019] Furthermore, the counterweight assembly of the present invention includes a front counterweight component, which is installed at the bottom front end and / or both sides of the lower drum module. By setting the front counterweight component, the weight of the motor at the rear of the roller device can be balanced, making the front-to-rear mass distribution more even and improving the overall stability; at the same time, setting it at the bottom front end and / or both sides allows it to be adapted to the installation position of other components, avoiding mutual interference.

[0020] Furthermore, the counterweight assembly of the present invention also includes a rear counterweight component, which is installed at the rear bottom and / or both sides of the lower cylinder module, and the weight of the rear counterweight component is less than the weight of the front counterweight component. This arrangement ensures a more balanced front-to-rear mass distribution in the roller assembly, further increases the total weight and inertia of the roller assembly, lowers the center of gravity of the roller assembly, and improves overall stability.

[0021] Furthermore, the axes of the compression spring and the shock absorber of the present invention both point towards and are perpendicular to the rotation axis of the lower cylinder module. This arrangement allows the shock absorber to be positioned towards the center of gravity of the roller assembly, thereby better utilizing the supporting and damping performance of the compression spring, as well as the damping performance of the shock absorber.

[0022] Furthermore, the upper drum module of the present invention includes a first upper drum, a second upper drum, and a connecting member. The first and second upper drums are symmetrically arranged on both sides of the top of the lower drum module. The two ends of the connecting member are fixedly connected to the first and second upper drums respectively. The bottom of the first and second upper drums are respectively provided with a first support structure and a second support structure, which are fixedly connected to both sides of the top of the lower drum module. By setting the drum device in a layout of one large and two small, one bottom and two top, a multi-drum structure is achieved. On the one hand, this makes the overall structure of the drum device simpler and more compact, which is conducive to controlling the size of the machine body and improving the convenience and flexibility of placing and installing the washing machine. On the other hand, by fixing the three drums together into a whole, the three drums can counterweight each other, and by rationally distributing the weight, a better balance is achieved, improving the stability of the drum device.

[0023] Furthermore, vibration damping pads are provided at the connection points between the first upper cylinder, the second upper cylinder and the connecting member, and at the connection points between the first upper cylinder, the second upper cylinder and the lower cylinder module. This arrangement effectively isolates and absorbs vibration transmission between the three cylinders, reducing the overall vibration intensity and lowering noise.

[0024] Furthermore, the shock-absorbing components of the present invention are provided in four sets, the bottom ends of the four sets of shock-absorbing components are respectively connected to the four corners of the base plate, and the top ends of the four sets of shock-absorbing components are respectively connected to the corresponding positions at the bottom of the roller assembly; and / or the two ends of the compression spring are respectively fixedly connected to the roller assembly and the base plate, and the two ends of the shock absorber are respectively pivotally connected to the roller assembly and the base plate; and / or the compression spring is arranged side by side with the shock absorber or the compression spring is sleeved on the shock absorber. By setting the number of damping components to four groups, the force distribution on the roller assembly can be ensured to be balanced. At the same time, by installing the four groups of damping components at the four corners, the support points of the four groups of damping components on the roller device can be as close to the outside as possible, which helps to reduce the swing amplitude of the roller device and ensure the stability during operation to the greatest extent. By pivotally connecting the two ends of the damper to the roller assembly and the base plate respectively, the angle of the damper can be adaptively adjusted with the swing of the roller device, ensuring that the axis of the damper always points to the center of gravity of the roller device. By providing various arrangement forms of compression springs and dampers, the damping characteristics of compression springs and dampers can be better utilized, while also flexibly adapting to the installation position of other components.

[0025] Furthermore, the washing machine provided by the present invention, based on the aforementioned housing, adopts the aforementioned drum device, thereby possessing the technical effects of the aforementioned drum device. Compared with the washing machine before the improvement, the washing machine of the present invention can also effectively suppress vibration and noise during operation under the multi-drum architecture, while making the overall structure more compact, without increasing the size of the machine body, making the placement and installation of the washing machine more flexible. Attached Figure Description

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 This is an assembly diagram of the roller device and the box body of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the roller device of the present invention.

[0029] List of reference numerals in the attached diagram:

[0030] 1. Upper cylinder module; 11. First upper cylinder; 111. First support structure; 12. Second upper cylinder; 121. Second support structure; 13. Connecting component; 2. Lower cylinder module; 3. Shock absorption assembly; 31. Compression spring; 32. Shock absorber; 4. Counterweight assembly; 41. Front counterweight component. Detailed Implementation

[0031] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0032] It should be noted that in the description of this invention, terms such as "inner," "outer," "upper," "lower," "top," and "bottom," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] As pointed out in the background art, existing multi-drum washing machines have a high center of gravity and large size in their drum assemblies, resulting in an increased machine size that exceeds conventional standards. This restricts the installation and placement of the washing machine and also leads to problems such as excessive vibration and noise. This invention provides a drum assembly and washing machine. By arranging the drum assembly into a structure of one large and two small, one bottom and two top, and using a combination of compression springs and shock absorbers for shock absorption, all installed between the lower drum and the base plate, and by strategically placing a certain number of counterweight components at different positions on the lower drum, the structure of the drum assembly becomes more compact, saving internal space. Simultaneously, it increases the total weight and inertia of the drum assembly, lowers the center of gravity, reduces vibration and noise during operation, and improves stability.

[0035] For example, with the development of technology and the improvement of living standards, users' requirements for clothing washing and care are constantly increasing. Traditional single-drum washing machines, due to the limitations of a single washing space, require multiple batches of clothes of different types, materials, colors, or belonging to different family members, taking a long time to complete the washing process. This cannot meet people's urgent needs for refined, personalized, healthy, and efficient clothing washing and care.

[0036] Therefore, in order to meet the diverse and multi-tasking needs of users, existing drum washing machines are not limited to single-drum structures. Based on the single-drum structure, double-drum and multi-drum structures have been developed. Through the independent operation of multiple drums, different users or different clothes can be washed and cared for in separate areas at the same time, which greatly improves washing and care efficiency.

[0037] However, because multi-drum washing machines typically use multiple drums stacked vertically, their height and size are significantly increased compared to standard-sized single-drum washing machines. This causes them to exceed some market industry standards and usage habits, such as the European standard of 850mm in height and 600mm in width. Consequently, the placement and installation of the washing machine are somewhat restricted, leading to a decrease in product competitiveness.

[0038] At the same time, the increased height of the machine body raises the center of gravity, increasing the instability of the drum assembly, resulting in greater vibration and noise during operation.

[0039] Based on this, such as Figure 1 As shown, the washing machine of the present invention is configured as a three-drum washing machine, including a drum assembly installed in the cabinet. The drum assembly is configured from top to bottom as: upper drum module 1, lower drum module 2 and shock absorption component 3.

[0040] Preferably, such as Figure 2As shown, the upper cylinder module 1 is configured as a double-cylinder structure, including a first upper cylinder 11 and a second upper cylinder 12 with equal diameters, and the two upper cylinders are symmetrically arranged on top of the lower cylinder module 2 in the horizontal direction. The lower cylinder module 2 is configured as a single-cylinder structure, with a diameter larger than that of the first upper cylinder 11 and the second upper cylinder 12, thus forming a combination configuration of one large and two small cylinders, so that the standard housing can also accommodate the installation of three rollers.

[0041] The specific dimensions of the three rollers can be flexibly set as needed, as long as they do not exceed the capacity of the measuring box. In this application, it is preferred to set the diameter of the lower roller module 2 to 495mm and the diameter of the first upper roller 11 and the second upper roller 12 to 215mm, so that the capacity of the lower roller module 2 reaches 10kg and the capacity of the first upper roller 11 and the second upper roller 12 reaches 1kg respectively.

[0042] This setup also helps to differentiate functions, ensuring the large capacity of the large tub (i.e., lower tub module 2) to meet the washing and care needs of large garments, while using two small tubs to meet the separate washing and care needs of small underwear.

[0043] To minimize the size of the roller assembly, the damping component 3 employs a combination of compression springs 31 and shock absorbers 32, with multiple damping components 3 installed between the lower cylinder module 2 and the bottom plate of the housing. The compression springs 31 provide upward support to the roller assembly and absorb vibrations through elastic deformation during operation; the shock absorbers 32 suppress high-frequency oscillations during the vibration absorption process of the compression springs 31, ensuring the stability of the roller assembly.

[0044] Through the above settings, while realizing the multi-drum structure, the overall structure of the drum device is made simpler and more compact, which is conducive to controlling the size of the machine body and improving the convenience and flexibility of the washing machine placement and installation. By fixing the three drums together into a whole, the three drums can counterweight each other, and by reasonably distributing the weight, they can achieve a better balance, thus improving the stability of the drum device. By setting the shock absorption component 3 as a combination of compression spring 31 and shock absorber 32, and installing them all at the bottom of the lower drum module 2, compared with the traditional combination of upper suspension spring and lower shock absorber 32, the compression spring 31 has better support and can make the stroke shorter to save vertical space. At the same time, the shock absorption spring on the upper drum module 1 can be eliminated, increasing the usable space in the upper part of the cabinet and saving costs.

[0045] like Figures 1 to 2As shown, in a preferred embodiment of the present invention, the roller device further includes a counterweight assembly 4, which is installed entirely on the lower cylinder module 2 to increase the total weight of the roller device and the proportion of its weight distribution on the lower cylinder module 2. On the one hand, this increases the inertia of the roller device, making it less susceptible to roller vibration and reducing the vibration caused by the eccentric rotation of the inner cylinder; on the other hand, it lowers the center of gravity of the entire roller device, making the roller device more stable.

[0046] In practical applications, the counterweight assembly 4 can be configured as at least one counterweight block. The structure and material of the counterweight block can be flexibly set as needed, such as concrete or cast iron and other metal materials. In addition, the counterweight block is connected to the lower cylinder module 2 by bolts to facilitate quick assembly and disassembly.

[0047] Regarding the quantity and installation position of the counterweight components 4, since the drive devices (motors, etc.) of the roller are all installed at the rear, the weight at the rear is greater than the weight at the front. Therefore, based on the mass distribution characteristics of the roller device, this invention also provides various combination schemes for the counterweight components 4:

[0048] like Figure 2 As shown, in the first preferred embodiment, the counterweight assembly 4 includes a front counterweight component 41 installed at the front of the lower cylinder module 2. The front counterweight component 41 is installed at the bottom of the opening of the lower cylinder module 2 and / or on both sides of the opening. Its installation position is as downward as possible, ensuring that it does not obstruct the opening, to lower the center of gravity. Simultaneously, the mass of the front counterweight component 41 must be sufficient to balance the weight of the rear motor, resulting in a more balanced front-to-rear mass distribution and improved overall stability.

[0049] The specific installation location can be flexibly set according to the positional relationship between the front counterweight component 41 and other components. For example, a counterweight can be installed at the bottom of the opening, or a counterweight can be installed on each side of the opening, or a counterweight can be installed at both the bottom and sides of the opening, so as to avoid interference with other components.

[0050] like Figure 2 As shown, in the second preferred embodiment, counterweight components are provided at both the front and rear ends of the lower cylinder module 2. That is, in addition to the aforementioned front counterweight component 41, a rear counterweight component is also provided at the bottom and / or sides of the rear end of the lower cylinder module 2 to further increase the total weight and inertia of the roller device, lower the center of gravity of the roller device, and improve the overall stability. It should be noted that, due to the presence of the rear motor, the mass of the rear counterweight component should be less than the weight of the front counterweight component 41 to ensure a more balanced mass distribution between the front and rear ends of the roller device.

[0051] Regarding the quantity of damping component 3, such as Figure 2As shown, in practical applications, the damping components can be flexibly configured according to the specific structure and mass distribution of the roller assembly. In this application, it is preferred to set four sets of damping components 3 to ensure that the force on the front, back and sides of the roller assembly is balanced. The four sets of damping components 3 are located at the four corners of the base plate so that the support points of the four sets of damping components 3 on the roller assembly are as close to the outside as possible, which helps to reduce the swing amplitude of the roller assembly and ensure the stability during operation to the greatest extent.

[0052] The two ends of the compression spring 31 are fixedly connected to the lower cylinder module 2 and the base plate, respectively. The two ends of the shock absorber 32 are pivotally connected to the lower cylinder module 2 and the base plate, respectively. The tops of the compression spring 31 and the shock absorber 32 are both inclined inward toward one side of the roller device.

[0053] With the support of the counterweight assembly 4, the center of gravity of the roller device shifts downward to near the rotation axis of the lower cylinder module 2. Therefore, it is preferable that the axes of the compression spring 31 and the shock absorber 32 point towards and are perpendicular to the rotation axis of the lower cylinder module 2, that is, both axes extend radially along the lower cylinder module 2. This arrangement makes the shock absorber 3 nearly perpendicular to the outer peripheral wall of the lower cylinder module 2, which is more conducive to the transmission of support force, so as to better utilize the support and shock absorption performance of the compression spring 31 and the damping performance of the shock absorber 32.

[0054] By pivotally connecting the two ends of the shock absorber 32 to the lower cylinder module 2 and the bottom plate respectively, the axial direction of the shock absorber 32 can be adaptively adjusted with the swing of the roller device to ensure that it always points in the direction of the center of gravity of the roller device, so as to maintain the best shock absorption posture.

[0055] It should be noted that, in practical applications, those skilled in the art can flexibly configure the shock absorber 32 as a friction damping shock absorber, a hydraulic damping shock absorber, an electromagnetic damping shock absorber, or a magnetorheological fluid damping shock absorber, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be limited to the protection scope of the present invention.

[0056] In addition to its strong support and short stroke, the compression spring 31 can also effectively save the bottom space of the roller device through reasonable inclination, which is an important factor in the effective control of the box height.

[0057] The compression spring 31 and the shock absorber 32 can be arranged side by side along the axial direction of the lower cylinder module 2, or the compression spring 31 can be sleeved on the shock absorber 32 so that the shock absorber 32 is located inside the compression spring 31.

[0058] Regarding the connection structure of the three rollers, such as Figure 2As shown, in this application, the roller device further includes a connecting member 13 disposed between the first upper cylinder 11 and the second upper cylinder 12. The connecting member 13 can be one, or one can be disposed at the front and one at the rear. Exemplarily, each end of the connecting member 13 is provided with a plurality of threaded holes, and threaded holes are also provided on the inner side of the first upper cylinder 11 and the second upper cylinder 12. The two ends of the connecting member 13 are respectively fixedly connected to the inner side of the first upper cylinder 11 and the second upper cylinder 12 by bolts.

[0059] In different embodiments, the connecting member 13 can be made of a high-density, high-strength material, such as cast iron, cast aluminum or concrete, which can serve both as a connector and as a counterweight; or it can be made of a lightweight material, such as plastic.

[0060] In this application, it is preferable to make the connecting member 13 out of plastic material, which helps to reduce the weight of the upper part, so as to lower the center of gravity and improve stability.

[0061] The bottom of the first upper cylinder 11 and the second upper cylinder 12 are respectively provided with a first support structure 111 and a second support structure 121. The first support structure 111 and the second support structure 121 are respectively provided with a number of threaded holes. Correspondingly, a number of threaded holes are respectively provided on both sides of the top of the lower cylinder module 2, so that the first upper cylinder 11, the second upper cylinder 12 and the lower cylinder module 2 are fixedly connected by bolts.

[0062] Preferably, at the connection of the threaded holes, a vibration damping pad made of rubber (not shown in the figure) can also be provided to further absorb the vibration transmission between the rollers, reduce the resonance between the three rollers, and reduce noise.

[0063] It should be noted that in practical applications, those skilled in the art can flexibly set the number and arrangement of the rollers to achieve the above technical effects.

[0064] Furthermore, the washing machine provided by the present invention, based on the aforementioned housing, adopts the aforementioned drum device, thereby possessing the technical effects of the aforementioned drum device. Compared with the washing machine before the improvement, the washing machine of the present invention can also effectively suppress vibration and noise during operation under the multi-drum architecture, while making the overall structure more compact, without increasing the size of the machine body, making the placement and installation of the washing machine more flexible.

[0065] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A drum assembly for a washing machine, characterized in that, The drum assembly is installed inside the washing machine housing and includes: Roller assembly, the roller assembly including at least one roller; The shock absorption assembly (3) is provided in multiple sets. The multiple sets of shock absorption assemblies (3) are spaced apart between the roller assembly and the bottom plate of the box body. The two ends of the multiple sets of shock absorption assemblies (3) are respectively connected to the roller assembly and the bottom plate. Each set of shock absorption assemblies (3) includes a compression spring (31) and a shock absorber (32).

2. The roller device according to claim 1, characterized in that, The roller assembly includes an upper roller module (1) and a lower roller module (2) that are fixedly connected. The upper roller module (1) is located above the lower roller module (2). The two ends of the multiple sets of shock-absorbing components (3) are respectively connected to the lower roller module (2) and the base plate.

3. The roller device according to claim 2, characterized in that, The roller device also includes a counterweight assembly (4), which is mounted on the lower roller module (2).

4. The roller device according to claim 3, characterized in that, The counterweight assembly (4) includes a front counterweight component (41), which is installed at the bottom front end and / or on both sides of the lower cylinder module (2).

5. The roller device according to claim 4, characterized in that, The counterweight assembly (4) also includes a rear counterweight component, which is installed at the rear bottom and / or both sides of the lower cylinder module (2), and the weight of the rear counterweight component is less than the weight of the front counterweight component (41).

6. The roller device according to claim 2, characterized in that, The axis of the compression spring (31) and the axis of the shock absorber (32) both point to the rotation axis of the lower cylinder module (2) and are perpendicular to the rotation axis of the lower cylinder module (2).

7. The roller device according to claim 2, characterized in that, The upper cylinder module includes a first upper cylinder (11), a second upper cylinder (12), and a connecting member (13). The first upper cylinder (11) and the second upper cylinder (12) are symmetrically arranged on the top sides of the lower cylinder module (2). The two ends of the connecting member (13) are fixedly connected to the first upper cylinder (11) and the second upper cylinder (12) respectively; The bottom of the first upper cylinder (11) and the second upper cylinder (12) are respectively provided with a first support structure (111) and a second support structure (121), and the first support structure (111) and the second support structure (121) are respectively fixedly connected to the top two sides of the lower cylinder module (2).

8. The roller device according to claim 7, characterized in that, Vibration isolation pads are provided at the connection points of the first upper cylinder (11), the second upper cylinder (12) and the connecting member (13), as well as at the connection points of the first upper cylinder (11), the second upper cylinder (12) and the lower cylinder module (2).

9. The roller device according to any one of claims 1 to 8, characterized in that, The shock-absorbing assembly (3) is provided in four sets. The bottom ends of the four sets of shock-absorbing assemblies (3) are respectively connected to the four corners of the base plate, and the top ends of the four sets of shock-absorbing assemblies (3) are respectively connected to the corresponding positions at the bottom of the roller assembly (2); and / or The two ends of the compression spring (31) are fixedly connected to the roller assembly and the base plate, respectively, and the two ends of the shock absorber (32) are pivotally connected to the roller assembly and the base plate, respectively; and / or The compression spring (31) is arranged side by side with the shock absorber (32) or the compression spring (31) is sleeved on the shock absorber (32).

10. A washing machine, characterized in that, The washing machine includes the drum assembly as described in any one of claims 1 to 9.

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