Transmission structure for tunnel type washing machine

By employing a rigid design with multi-point support and limiting components in the washing machine, the stability and reliability issues of the inner drum during large-scale operations have been resolved, achieving long-term stable operation and efficient washing.

CN223991194UActive Publication Date: 2026-03-13JIANGSU CHUANDAO WASHING MASCH TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-14
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

As the capacity of the washing machine drum increases and the number of compartments grows, its operational stability and reliability decrease, leading to shaking and reliability issues during large-scale continuous operation.

Method used

The rigid design with multi-point support, through the cooperation of support rings and support frames, combined with limiting components and lubrication components, ensures a stable connection and lubrication between the inner cylinder and the frame, reducing swaying and axial movement.

Benefits of technology

It achieves stability and reliability of the inner drum in large-scale continuous operation, reduces shaking and reliability degradation of the equipment during violent tumbling, and meets the demand for high-efficiency washing.

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Abstract

The utility model relates to the technical field of linen washing, in particular to a transmission structure for a tunnel type washing machine, which comprises a rack and an inner drum, a driving component is arranged between the rack and the inner drum and used for enabling the inner drum and the rack to rotate relatively, a lubricating component is arranged above the rack and used for injecting oil into the driving component, and the lubricating component is used for lubricating the driving component. A plurality of supporting frames are fixedly arranged on the rack, supporting rings are rotationally arranged on the supporting frames, the supporting rings are arranged on the inner cylinder in a sleeving mode, the supporting rings are fixedly connected with the inner cylinder, limiting assemblies are arranged between the supporting rings and the rack, and the limiting assemblies are used for abutting against the side walls of the supporting rings. The effect of improving the reliability of the tunnel washing machine is achieved.
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Description

Technical Field

[0001] This utility model relates to the field of linen washing technology, and in particular to a transmission structure for a laundry drum. Background Technology

[0002] Tunnel-type continuous washing machines, also known as laundry dragons, are large-scale washing equipment suitable for washing linens in hotels, hospitals, and other similar establishments. They can perform continuous washing of large quantities of items such as towels, bath towels, sheets, duvet covers, and pillowcases. When combined with weighing conveyors, press-type dewatering machines, shuttle conveyors, and through-type dryers, they form a highly efficient washing system.

[0003] For large-scale laundry factories with high washing volumes, in order to improve the factory's capacity and efficiency, the selection of washing machine augers usually requires large inner drum capacity and multiple compartments. However, as the inner drum capacity continues to increase and the number of compartments gradually increases, the impact on the operational stability of the washing machine will increase accordingly, leading to a decrease in the reliability of the washing machine. Utility Model Content

[0004] To improve the reliability of a washing machine, this application provides a transmission structure for a washing machine.

[0005] The transmission structure for a washing machine provided in this application adopts the following technical solution:

[0006] A transmission structure for a washing machine includes a frame and an inner drum. A drive assembly is disposed between the frame and the inner drum, and the drive assembly is used to rotate the inner drum relative to the frame. A lubrication assembly is disposed above the frame, and the lubrication assembly is used to inject oil into the drive assembly. A plurality of support frames are fixedly disposed on the frame, and support rings are rotatably disposed on the support frames. The support rings are sleeved on the inner drum and fixedly connected to the inner drum. A limiting assembly is disposed between the support rings and the frame, and the limiting assembly is used to abut against the side wall of the support rings.

[0007] By adopting the above technical solution, when the drive component causes the inner drum to swing, the lubrication component injects oil into the drive component for lubrication, which facilitates the operation of the drive component to drive the inner drum. Due to the cooperation of the support ring and the support frame, a multi-point support rigid design is formed between the inner drum and the frame. When the inner drum has a large capacity and many compartments, the multi-point support rigid design resists the shaking caused by the violent tumbling of linens, thereby achieving the effect of long-term stable operation of the inner drum. In addition, the limiting component abuts against the side wall of the support ring, forming an axial limit on the support ring, reducing the axial movement of the inner drum, meeting the stability requirements of the washing machine in large-scale continuous operation, and reducing the possibility of a decrease in the reliability of the washing machine.

[0008] Preferably, a set of lower support wheels and a set of side support wheels are symmetrically arranged on the support frame. Both the lower support wheels and the side support wheels are rotatably connected to the support frame and abut against the outer wall of the support ring.

[0009] By adopting the above technical solution, when the inner cylinder rotates and drives the support ring to rotate, the support ring rolls on the lower support wheel and the side support wheel, thereby achieving the effect of rotating connection between the support frame and the support frame.

[0010] Preferably, the limiting assembly includes a limiting seat and a set of limiting wheels. The limiting seat is fixedly mounted on the frame, and the limiting wheels are rotatably mounted on the limiting seat. One side wall of the support ring abuts against the side wall of one of the limiting wheels, and the other side wall of the support ring abuts against the side wall of the other limiting wheel.

[0011] By adopting the above technical solution, the support ring is located between the limiting wheels, and the limiting wheels abut against the side wall of the support ring, thereby achieving the effect of axial limiting of the support ring. When the support ring rotates, the support ring and the limiting wheels roll relative to each other, thereby reducing the friction between the support ring and the limiting wheels.

[0012] Preferably, a set of dovetail grooves are symmetrically formed on the limiting seat, and a set of dovetail blocks are slidably arranged in the dovetail grooves. A connecting seat is provided on the top of the dovetail block. The top of one connecting seat is rotatably connected to one of the limiting wheels, and the top of the other connecting seat is rotatably connected to another limiting wheel. A locking component is provided between the connecting seat and the limiting seat. The locking component is used to keep the connecting seat and the limiting seat relatively stationary.

[0013] By adopting the above technical solution, the dovetail block drives the connecting seat to slide along the dovetail groove. When the limiting wheel abuts against the side wall of the support ring, the locking assembly keeps the connecting seat and the limiting seat relatively stationary, thereby achieving the effect of axial limiting of the support ring.

[0014] Preferably, the locking assembly includes a locking seat, a locking screw, and a set of locking nuts. The locking seat is fixedly mounted on the limiting seat, and a locking hole is formed on the locking seat. The locking screw passes through the locking hole and is movably connected to the side wall of the connecting seat. The locking nuts are threadedly connected to the locking screw. One side of the locking seat is used to abut against the side wall of one of the locking nuts, and the other side of the locking seat is used to abut against the side wall of the other locking nut.

[0015] By adopting the above technical solution, when the dovetail block slides along the dovetail groove, the locking nut is rotated to separate the locking nut from the locking seat. After the locking nut is separated from the locking seat, the locking screw can slide along the locking hole, which facilitates the dovetail block to drive the connecting seat to slide along the dovetail groove. When the limiting wheel moves to abut against the side wall of the support ring, the locking screw abuts against the connecting seat, and the locking nut is rotated to abut against the locking seat, thereby achieving the effect of keeping the connecting seat and the limiting seat relatively stationary.

[0016] Preferably, the drive assembly includes a drive motor, a drive sprocket, a transmission sprocket, and a plurality of transmission chains. The drive motor is fixedly mounted on the frame. The drive sprocket is sleeved on the output shaft of the drive motor and is fixedly connected to the output shaft of the drive motor. The transmission sprocket is sleeved on the inner cylinder and is fixedly connected to the inner cylinder. The transmission chains are sleeved on both the drive sprocket and the transmission sprocket, and both the drive sprocket and the transmission sprocket mesh with the transmission chains.

[0017] By adopting the above technical solution, the drive motor starts and drives the drive sprocket to rotate, the drive sprocket rotates and drives the transmission chain to move, the transmission chain moves and drives the transmission sprocket to rotate, and the transmission sprocket rotates and drives the inner cylinder to rotate.

[0018] Preferably, the frame is provided with several tensioning arms, and tensioning wheels are rotatably mounted on the tensioning arms, with the tensioning wheels abutting against the transmission chain.

[0019] By adopting the above technical solution, the tension of the transmission chain can be adjusted by adjusting the position of the tension wheel.

[0020] Preferably, the lubrication assembly includes an oil tank, an oil pump, and several oil pipes. The input end of the oil pump is connected to the oil tank, the output end of the oil pump is connected to one end of the oil pipes, and the other end of the oil pipes faces the drive sprocket.

[0021] By adopting the above technical solution, lubricating oil is injected into the oil tank. When the oil pump is started, the oil pump pumps the lubricating oil in the oil tank into the oil pipe. The oil pipe drips the lubricating oil between the drive sprocket and the transmission chain, thereby achieving the effect of lubricating the drive sprocket, the transmission chain and the transmission sprocket.

[0022] Preferably, a plurality of adjusting sleeves are fixedly installed at the bottom of the frame. The adjusting sleeves are internally threaded to adjusting screws, and adjusting nuts are threaded to adjusting screws. Support legs are fixedly installed at the bottom end of the adjusting screws. The adjusting nuts and support legs are both located outside the adjusting sleeves, and the top end of the adjusting nut abuts against the bottom end of the adjusting sleeve.

[0023] By adopting the above technical solution, when there is a height difference between the placement surfaces of the frame, first rotate the adjusting screw to adjust the distance between the support foot and the frame, and then rotate the adjusting nut to make the top of the adjusting nut abut against the bottom of the adjusting sleeve, thereby achieving the effect of placing the inner cylinder horizontally.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up a frame, inner drum, drive assembly, lubrication assembly, support frame, support ring, and limiting assembly, the stability requirements of the washing machine drum in large-scale continuous operation are met, and the possibility of a decrease in the reliability of the washing machine drum is reduced;

[0026] 2. By setting a limit seat and a set of limit wheels, the axial positioning effect of the support ring is achieved;

[0027] 3. By setting a locking seat, locking hole, locking screw and a set of locking nuts, the effect of keeping the connecting seat and the limiting seat relatively stationary can be achieved. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a transmission structure for a washing machine in an embodiment of this application.

[0029] Figure 2 This is a schematic diagram illustrating the connection relationship between the inner cylinder and the drive motor in an embodiment of this application.

[0030] Figure 3 This is a schematic diagram illustrating the connection relationship between the inner cylinder and the frame in an embodiment of this application.

[0031] Figure 4 yes Figure 3 Enlarged view of section A.

[0032] Figure 5 This is a cross-sectional view illustrating the connection relationship between the limiting wheel and the limiting seat in the embodiments of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Adjusting sleeve; 12. Adjusting screw; 13. Adjusting nut; 14. Support leg; 2. Inner cylinder; 21. Support ring; 3. Drive assembly; 31. Drive motor; 32. Drive sprocket; 33. Transmission sprocket; 34. Transmission chain; 4. Lubrication assembly; 41. Oil tank; 42. Oil pump; 43. Oil pipe; 5. Support frame; 51. Lower support wheel; 52. Side support wheel; 6. Limiting assembly; 61. Limiting seat; 611. Dovetail groove; 612. Dovetail block; 62. Limiting wheel; 621. Connecting seat; 7. Locking assembly; 71. Locking seat; 711. Locking hole; 72. Locking screw; 73. Locking nut; 8. Tensioning wheel; 81. Tensioning arm. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This application discloses a transmission structure for a washing machine. (Refer to...) Figures 1 to 5 The system includes a frame 1 and an inner cylinder 2. A drive assembly 3 is installed between the frame 1 and the inner cylinder 2, which allows the inner cylinder 2 to rotate relative to the frame 1. A lubrication assembly 4 is installed above the frame 1, which is used to inject oil into the drive assembly 3. Several support frames 5 are arranged along the axis of the inner cylinder 2 on the frame 1, and the support frames 5 are fixedly connected to the frame 1. A set of lower support wheels 51 and a set of side support wheels 52 are symmetrically arranged on the support frames 5, and both the lower support wheels 51 and the side support wheels 52 are rotatably connected to the support frames 5. The lower support wheels 51 and the side support wheels 52 jointly support a support ring 21, and the outer ring walls of the lower support wheels 51 and the side support wheels 52 abut against the outer ring wall of the support ring 21. An installation assembly is provided between the support ring 21 and the frame 1, and a limiting assembly 6 is used to abut against the side wall of the support ring 21, so that the limiting ring is not easily moved along the axis of the inner cylinder 2. The support ring 21 is sleeved on the inner cylinder 2, and the support ring 21 is fixedly connected to the inner cylinder 2. When the drive assembly 3 causes the inner drum 2 to swing, the lubrication assembly 4 injects oil into the drive assembly 3 for lubrication, facilitating the operation of the drive assembly 3 and driving the inner drum 2. Due to the cooperation of the support ring 21 and the support frame 5, a multi-point support rigid design is formed between the inner drum 2 and the frame 1. When the inner drum 2 has a large capacity and many compartments, the multi-point support rigid design resists the shaking caused by violent tumbling of linens, thus achieving long-term stable operation of the inner drum 2. Furthermore, the limiting assembly 6 abuts against the side wall of the support ring 21, forming an axial limit on the support ring 21 and reducing the possibility of axial movement of the inner drum 2. This meets the stability requirements of the washing machine in large-scale continuous operation and reduces the possibility of decreased reliability.

[0036] To reduce the axial movement of the inner cylinder 2, refer to Figures 2 to 5 The limiting component 6 includes a limiting seat 61 and a set of limiting wheels 62. The limiting seat 61 is mounted on the frame 1, and a set of dovetail grooves 611 are symmetrically formed on the side wall of the limiting seat 61 facing the support ring 21. A set of dovetail blocks 612 are slidably arranged in the dovetail grooves 611, and a connecting seat 621 is installed on the top of the dovetail blocks 612. A locking component 7 is provided between the connecting seat 621 and the limiting seat 61 to keep the connecting seat 621 and the limiting seat 61 relatively stationary. The top of one connecting seat 621 is rotatably connected to one of the limiting wheels 62, and the top of the other connecting seat 621 is rotatably connected to the other limiting wheel 62. The support ring 21 is located between the limiting wheels 62, and one side wall of the support ring 21 abuts against the side wall of one of the limiting wheels 62, and the other side wall of the support ring 21 abuts against the side wall of the other limiting wheel 62, thereby achieving the effect of axial limiting of the support ring 21.

[0037] To keep the connecting seat 621 and the limiting seat 61 relatively stationary, refer to Figures 2 to 5 The locking assembly 7 includes a locking seat 71, a locking screw 72, and a set of locking nuts 73. The locking seat 71 is mounted on the limiting seat 61, and a locking hole 711 is formed on the locking seat 71. One end of the locking screw 72 is movably connected to the side wall of the connecting seat 621, and the other end of the locking screw 72 passes through the locking hole 711, with the axis of the locking screw 72 parallel to the axis of the inner cylinder 2. The locking nuts 73 are threaded onto the locking screw 72. One side of the locking seat 71 is used to abut against the side wall of one of the locking nuts 73, and the other side of the locking seat 71 is used to abut against the side wall of the other locking nut 73. When the dovetail block 612 slides along the dovetail groove 611, the locking nut 73 is rotated to separate it from the locking seat 71. After the locking nut 73 separates from the locking seat 71, the locking screw 72 can slide along the locking hole 711, thus facilitating the dovetail block 612 to drive the connecting seat 621 to slide along the dovetail groove 611. When the limiting wheel 62 moves to abut against the side wall of the support ring 21, the locking screw 72 abuts against the connecting seat 621, and the locking nut 73 is rotated to abut against the locking seat 71, thereby achieving the effect of keeping the connecting seat 621 and the limiting seat 61 relatively stationary.

[0038] In order to drive the inner cylinder 2 to swing, refer to Figures 1 to 3 The drive assembly 3 includes a drive motor 31, a drive sprocket 32, a transmission sprocket 33, and several transmission chains 34. The drive motor 31 is mounted on the frame 1 via a motor mount. The drive sprocket 32 ​​is sleeved on the output shaft of the drive motor 31 and is fixedly connected to the output shaft. The transmission sprocket 33 is sleeved on the inner cylinder 2 and is fixedly connected to the inner cylinder 2. The transmission chains 34 are sleeved on both the drive sprocket 32 ​​and the transmission sprocket 33, and both the drive sprocket 32 ​​and the transmission sprocket 33 mesh with the transmission chains 34. Several tensioning arms 81 are provided on the frame 1, and tensioning wheels 8 are rotatably mounted on the tensioning arms 81, abutting against the transmission chains 34. The tension of the transmission chains 34 is adjusted by adjusting the position of the tensioning wheels 8. The drive motor 31 starts and drives the drive sprocket 32 ​​to rotate. The rotation of the drive sprocket 32 ​​drives the transmission chain 34 to move. The movement of the transmission chain 34 drives the transmission sprocket 33 to rotate. The rotation of the transmission sprocket 33 drives the inner cylinder 2 to rotate.

[0039] To achieve the desired oil lubrication effect for drive component 3, refer to... Figures 1 to 3The lubrication assembly 4 includes an oil tank 41, an oil pump 42, and several oil pipes 43. Lubricating oil is injected into the oil tank 41, which is connected to the input end of the oil pump 42. The output end of the oil pump 42 is connected to one end of each oil pipe 43, with the other end of the oil pipe 43 facing the drive sprocket 32. When the oil pump 42 starts, it pumps the lubricating oil from the oil tank 41 into the oil pipes 43, which then drip the lubricating oil between the drive sprocket 32 ​​and the transmission chain 34, thus lubricating the drive sprocket 32, the transmission chain 34, and the transmission sprocket 33.

[0040] To ensure the inner cylinder 2 is placed horizontally, refer to... Figures 1 to 3 Several adjusting sleeves 11 are installed at the bottom of the frame 1, and adjusting screws 12 are internally threaded onto the adjusting sleeves 11. Adjusting nuts 13 are threaded onto the adjusting screws 12, and support legs 14 are installed at the bottom of the adjusting screws 12. The adjusting nuts 13 and support legs 14 are both located outside the adjusting sleeves 11, with the top of the adjusting nut 13 abutting against the bottom of the adjusting sleeve 11. When there is a height difference between the placement surfaces of the frame 1 and the machine frame 1, the adjusting screws 12 are first rotated to adjust the distance between the support legs and the machine frame 1, and then the adjusting nuts 13 are rotated so that the top of the adjusting nut 13 abuts against the bottom of the adjusting sleeves 11, thereby placing the machine frame 1 horizontally.

[0041] The implementation principle of the transmission structure for a laundry drum in this embodiment is as follows: The drive motor 31 starts, driving the drive sprocket 32 ​​to rotate. The rotation of the drive sprocket 32 ​​drives the transmission chain 34 to move. The movement of the transmission chain 34 drives the transmission sprocket 33 to rotate, and the rotation of the transmission sprocket 33 drives the inner drum 2 to rotate. When the oil pump 42 starts, it pumps lubricating oil from the oil tank 41 into the oil pipe 43. The oil pipe 43 drips lubricating oil between the drive sprocket 32 ​​and the transmission chain 34, achieving lubrication of the drive sprocket 32, transmission chain 34, and transmission sprocket 33, thus facilitating stable operation of the drive sprocket 32, transmission chain 34, and transmission sprocket 33. Due to the cooperation of the support ring 21 and the support frame 5, a multi-point support rigid design is formed between the inner drum 2 and the frame 1. When the inner drum 2 has a large capacity and many compartments, the multi-point support rigid design resists the shaking caused by violent tumbling of linens, thus achieving long-term stable operation of the inner drum 2. Furthermore, the limiting wheel 62 abuts against the side wall of the support ring 21, axially limiting the support ring 21 and reducing the axial movement of the inner drum 2. This meets the stability requirements of the washing machine in large-scale continuous operation and reduces the possibility of a decrease in the washing machine's reliability.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drive structure for a laundry washing machine of the type comprising a frame and an inner drum, characterized in that: The driving assembly is arranged between the frame and the inner cylinder, and is used to rotate the inner cylinder relative to the frame.

2. A drive structure for a laundry dragon as claimed in claim 1, wherein: The support frame is symmetrically provided with a group of lower support wheels and a group of side support wheels, and the lower support wheels and the side support wheels are rotatably connected with the support frame.

3. A drive structure for a laundry dragon as claimed in claim 2, wherein: The limiting assembly includes a limiting seat and a group of limiting wheels, the limiting seat is fixedly arranged on the frame, and the limiting wheels are rotatably arranged on the limiting seat.

4. A drive structure for a laundry dragon as claimed in claim 3, wherein: The limiting seat is symmetrically provided with a group of dovetail grooves, a group of dovetail blocks are slidably arranged in the dovetail grooves, the top of one of the connecting seats is rotatably connected with one of the limiting wheels, and the top of the other connecting seat is rotatably connected with the other limiting wheel.

5. A drive structure for a laundry dragon as claimed in claim 4, wherein: The locking assembly includes a locking seat, a locking screw and a group of locking nuts, the locking seat is fixedly arranged on the limiting seat, a locking hole is formed in the locking seat, the locking screw penetrates through the locking hole, the locking screw is movably connected with the side wall of the connecting seat, the locking nuts are threadedly connected on the locking screw, one side of the locking seat is used for abutting against the side wall of one of the locking nuts, and the other side of the locking seat is used for abutting against the side wall of the other locking nut.

6. A drive structure for a laundry dragon as claimed in claim 1, wherein: The driving assembly includes a driving motor, a driving sprocket, a transmission sprocket and a plurality of transmission chains, the driving motor is fixedly arranged on the frame, the driving sprocket is sleeved on the output shaft of the driving motor, the driving sprocket is fixedly connected with the output shaft of the driving motor, the transmission sprocket is sleeved on the inner cylinder, the transmission sprocket is fixedly connected with the inner cylinder, and the transmission chains are commonly sleeved on the driving sprocket and the transmission sprocket.

7. A drive structure for a laundry dragon as claimed in claim 6, wherein: The frame is provided with a plurality of tensioning arms, the tensioning arms are rotatably provided with tensioning wheels, and the tensioning wheels abut against the transmission chains.

8. A drive structure for a laundry dragon as claimed in claim 6, wherein: The lubricating assembly includes an oil tank, an oil pump and a plurality of oil pipes, the input end of the oil pump is in communication with the oil tank, the output end of the oil pump is in communication with one end of the oil pipe, and the other end of the oil pipe faces the driving sprocket.

9. The drive structure for a laundry dragon according to claim 1, wherein: The frame is provided with a plurality of adjusting sleeves, the adjusting sleeves are in threaded connection with adjusting screws, the adjusting screws are in threaded connection with adjusting nuts, the bottom ends of the adjusting screws are fixedly provided with supporting legs, the adjusting nuts and the supporting legs are located outside the adjusting sleeves, and the top ends of the adjusting nuts abut against the bottom ends of the adjusting sleeves.