Double passage main shaft car washer
Patent Information
- Application Number
- CN202522282025.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-29
AI Technical Summary
[0004]然而，能够通水的滑环（即“走水滑环”或“流体滑环”）因其精密的密封结构和材料要求，制造成本远高于普通的导电滑环或单一高压主轴，而且，走水滑环内部依赖动密封面，在长期承受水压、机械振动以及水中可能含有的细小杂质磨损下，其密封件极易老化或损坏，导致低压水泄漏，维护频率高，此外，导电滑环与走水滑环集成，使得该部件结构复杂、体积较大，维修维护困难
1.本实用新型通过双通路同轴主轴结构，使高压水与低压水均经由主轴内部输送，解决了低压水路泄漏难题，提升设备可靠性、减少因漏水引发电气故障，简化了整体结构，优化了空间布局，维修维护方便，节省成本；
Smart Images
Figure CN224726937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of car wash machine technology, specifically a dual-channel spindle car wash machine. Background Technology
[0002] The lateral moving car wash is one of the mainstream pieces of equipment in modern intelligent car washes. It automates the cleaning of stationary vehicles through a lateral moving washing arm. The washing arm typically requires two different types of water flow: high-pressure water is used to rinse away stubborn stains on the vehicle's surface, while low-pressure water is used for pre-wetting and spraying chemical liquids such as foam or wax.
[0003] Currently, most mainstream touring car wash machines on the market employ a separate design for high-pressure and low-pressure water delivery. High-pressure water path: Typically, the high-pressure water enters a central main shaft through a top rotary joint, and is then delivered to the high-pressure nozzles on the wash arms via internal channels within the main shaft. Low-pressure water path: Because the wash arms need to move and rotate extensively with the touring car, the low-pressure water pipe connecting the fixed water source and the moving wash arms needs to address issues of winding and rotational sealing. Existing technology generally uses a water-conducting slip ring, which is specifically responsible for the conduction of low-pressure water.
[0004] However, the manufacturing cost of slip rings capable of carrying water (i.e., "water-cooled slip rings" or "fluid slip rings") is much higher than that of ordinary conductive slip rings or single high-pressure spindles due to their precise sealing structure and material requirements. Moreover, the internal dynamic sealing surface of water-cooled slip rings is prone to aging or damage under long-term exposure to water pressure, mechanical vibration, and wear from small impurities that may be present in the water, leading to low-pressure water leakage and high maintenance frequency. In addition, the integration of conductive slip rings and water-cooled slip rings makes the component complex in structure, large in size, and difficult to repair and maintain. Utility Model Content
[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a dual-channel main shaft car wash machine. Through the dual-channel coaxial main shaft structure, both high-pressure water and low-pressure water are transported through the inside of the main shaft, solving the problem of low-pressure water leakage, improving equipment reliability, reducing electrical faults caused by water leakage, simplifying the overall structure, optimizing the spatial layout, facilitating maintenance, and saving costs.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A dual-channel spindle car wash machine includes a fixed plate, a motor unit, a spindle, a dual-channel rotary joint, a high-pressure car wash arm, and a low-pressure car wash arm. A fixed seat is fixedly mounted on the fixed plate, and the motor unit is fixedly mounted on the fixed seat. The spindle is vertically mounted inside the motor unit and driven to rotate by the motor unit. The upper end of the spindle extends through the motor unit and is fixedly mounted with a second flange. The lower end of the dual-channel rotary joint is provided with a first flange, which is bolted to the second flange. The lower end of the spindle extends to the bottom of the fixed plate and is fixedly connected with a fixed cover. The high-pressure car wash arm is fixedly mounted on the side surface of the fixed cover, and the low-pressure car wash arm is fixedly mounted on the low-pressure car wash arm. A conductive slip ring is provided on the spindle and below the fixed seat. The dual-channel rotary joint includes a third low-pressure channel and... The third high-pressure passage, the first flange corresponding to the third low-pressure passage and the third high-pressure passage, the second low-pressure passage corresponding to the second low-pressure passage, the second flange corresponding to the second high-pressure passage, the second flange corresponding to the second high-pressure passage, the main shaft having a first low-pressure passage and a first high-pressure passage parallel to the axis, the upper end of the first low-pressure passage having an extension platform inserted into the insertion hole, the lower end of the first low-pressure passage extending to near the bottom of the main shaft and having a radially connected low-pressure outlet connector, the end face of the low-pressure car wash arm having a low-pressure connector and the low-pressure outlet connector being connected by a water pipe, the upper end of the first high-pressure passage connecting to the through hole and the lower end extending to the bottom of the main shaft, the fixed cover forming a cavity with the lower end of the main shaft, the high-pressure car wash arm and the fixed cover having high-pressure water inlets, the high-pressure water inlets being connected to the first high-pressure passage through the cavity.
[0007] Preferably, the third high-pressure passage, the second high-pressure passage, and the through hole are on the same axis and have the same diameter. The first high-pressure passage has the same diameter as the through hole and is designed to be offset. The upper end of the first high-pressure passage is provided with a flared groove, the diameter of which covers the position of the through hole.
[0008] Preferably, the upper surface of the second flange is provided with a groove, and the bottom of the first flange is provided with a boss that matches the groove, the boss being inserted into the groove.
[0009] Preferably, a sealing gasket is provided between the first flange and the second flange.
[0010] Preferably, a sealing ring is provided between the fixed cover and the main shaft.
[0011] This utility model provides a dual-channel spindle car wash machine, which has the following beneficial effects: 1. This utility model uses a dual-channel coaxial spindle structure to transport both high-pressure water and low-pressure water through the inside of the spindle, which solves the problem of low-pressure water leakage, improves equipment reliability, reduces electrical faults caused by water leakage, simplifies the overall structure, optimizes the spatial layout, facilitates maintenance, and saves costs. 2. In this utility model, an extension platform is provided at the upper end of the first low-pressure passage of the main shaft, and an insertion hole is provided at the position corresponding to the second flange. The extension platform is inserted into the insertion hole of the second flange and welded together. The mating surface is higher than the mating surface of the through hole on the first high-pressure passage and the second flange, thereby preventing water from flowing through the connection between the first low-pressure passage and the first high-pressure passage and the second flange. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall design of a dual-channel spindle car wash machine according to this utility model; Figure 2 This is a cross-sectional view of the main shaft in this utility model; Figure 3 This utility model Figure 2 Enlarged schematic diagram of the positions of the first and second flanges.
[0013] In the diagram: 1. Fixing plate; 2. Fixing base; 3. Motor unit; 4. Main shaft; 5. Second flange; 6. First flange; 7. Dual-pass rotary joint; 8. High-pressure wash arm; 9. Low-pressure wash arm; 10. Sealing ring; 11. Fixing cover; 12. Conductive slip ring; 41. First low-pressure passage; 42. First high-pressure passage; 43. Low-pressure outlet joint; 44. Flared groove; 45. Extension platform; 51. Insertion hole; 52. Through hole; 53. Sealing gasket; 54. Groove; 61. Second low-pressure passage; 62. Second high-pressure passage; 63. Boss; 71. Third low-pressure passage; 72. Third high-pressure passage; 81. High-pressure water inlet; 91. Low-pressure joint. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] like Figure 1-3As shown, a dual-channel spindle car wash machine includes a fixed plate 1, a motor unit 3, a spindle 4, a dual-channel rotary joint 7, a high-pressure car wash arm 8, and a low-pressure car wash arm 9. A fixed base 2 is fixedly mounted on the fixed plate 1. The motor unit 3 is fixedly mounted on the fixed base 2. The spindle 4 is vertically mounted inside the motor unit 3 and is driven to rotate by the motor unit 3. The upper end of the spindle 4 extends through the motor unit 3 and is fixedly mounted with a second flange 5. The lower end of the dual-channel rotary joint 7 is provided with a first flange 6. The first flange 6 and the second flange 5 are fixedly connected by bolts. The lower end of the spindle 4 extends to the bottom of the fixed plate 1 and is fixedly connected with a fixed cover 11. The high-pressure car wash arm 8 is fixedly mounted on the side surface of the fixed cover 11, and the low-pressure car wash arm 9 is fixedly mounted on the low-pressure car wash arm 9. A conductive slip ring 12 is provided on the main shaft 4 and below the fixed seat 2. The dual-channel rotary joint 7 includes a third low-pressure channel 71 and a third high-pressure channel 72. The first flange 6 has a second low-pressure channel 61 and a second high-pressure channel 62 at the positions corresponding to the third low-pressure channel 71 and the third high-pressure channel 72. The second flange 5 has a socket 51 at the position corresponding to the second low-pressure channel 61 and a through hole 52 at the position corresponding to the second high-pressure channel 62. The main shaft 4 has a second high-pressure channel 62 parallel to the axis. A low-pressure passage 41 and a first high-pressure passage 42 are provided. The upper end of the first low-pressure passage 41 is provided with an extension platform 45 that is inserted into a socket 51. The lower end of the first low-pressure passage 41 extends to a position near the bottom of the main shaft 4 and is radially provided with a low-pressure outlet connector 43. The end face of the low-pressure car wash arm 9 is provided with a low-pressure connector 91, and the low-pressure connector 91 is connected to the low-pressure outlet connector 43 through a water pipe. The upper end of the first high-pressure passage 42 is connected to a through hole 52, and the lower end extends to the bottom of the main shaft 4. The fixed cover 11 forms a cavity with the lower end of the main shaft 4. The high-pressure car wash arm 8 and the fixed cover 11 are provided with high-pressure water inlets 81, and the high-pressure water inlets 81 are connected to the first high-pressure passage 42 through the cavity. A high-pressure passage 42 is connected; the third high-pressure passage 72, the second high-pressure passage 62 and the through hole 52 are on the same axis and have the same diameter. The first high-pressure passage 42 and the through hole 52 have the same diameter and are staggered. The upper end of the first high-pressure passage 42 is provided with a flared groove 44, the diameter of which covers the position of the through hole 52; the upper surface of the second flange 5 is provided with a groove 54, and the bottom of the first flange 6 is provided with a boss 63 that matches the groove 54. The boss 63 is inserted into the groove 54; a sealing gasket 53 is provided between the first flange 6 and the second flange 5; a sealing ring 10 is provided between the fixed cover 11 and the main shaft 4.
[0016] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows: According to the instruction manual Figure 1-3As can be seen, during operation, the dual-channel rotary joint 7 connects to both low-pressure and high-pressure water, and this dual-channel rotary joint 7 is existing technology. Low-pressure water enters through the third low-pressure channel 71, passes through the second low-pressure channel 61 of the first flange 6, and enters the first low-pressure channel 41 of the main shaft 4. From the low-pressure outlet joint 43, it connects to the low-pressure joint 91 of the low-pressure car wash arm 9 via an external water pipe, providing car wash liquid and other liquids for car washing. High-pressure water enters through the third high-pressure channel 72, passes through the second high-pressure channel 62 of the first flange 6 and the through hole 52 of the second flange 5, and enters the second high-pressure channel 62 of the main shaft 4. After passing through the cavity of the fixed cover 11 and the high-pressure water inlet 81, it enters the high-pressure car wash arm 8, providing high-pressure water for car washing. This invention, through its dual-channel coaxial main shaft 4 structure, ensures that both high-pressure and low-pressure water are transported internally through the main shaft 4, solving the problem of low-pressure water leakage, improving equipment reliability, reducing electrical faults caused by water leakage, simplifying the overall structure, optimizing spatial layout, facilitating maintenance, and saving costs.
[0017] In this invention, the dual-channel rotary joint 7 is fixed and sealed to the first flange 6, the fixed cover 11 to the high-pressure wash arm 8, and the main shaft 4 to the second flange 5 by welding. The fixed cover 11 and the lower end of the main shaft 4 can be fastened with bolts and clamps, and the first flange 6 and the second flange 5 are fixed with bolts for easy disassembly and installation. The upper end of the first low-pressure passage 41 on the main shaft 4 is provided with an extension platform 45 which is inserted into the insertion hole 51 and is further fixed and sealed by welding. The mating surface is higher than the mating surface of the through hole 52 on the first high-pressure passage 42 and the second flange 5, thereby preventing water from flowing through the connection between the first low-pressure passage 41 and the first high-pressure passage 42 and the second flange 5.
[0018] The third high-pressure passage 72, the second high-pressure passage 62, and the through hole 52 are on the same axis and have the same diameter. The first high-pressure passage 42 has the same diameter as the through hole 52 but is designed to be offset. It needs to be explained why the offset design is necessary: the dual-passage rotary joint 7 is entirely standard or semi-non-standard (slightly modified from standard parts), and the positions of the dual passages are basically fixed. However, the diameter of the main shaft 4 is limited by the reducer. In this invention, the motor unit 3 is existing technology, including a motor and a reducer, which can drive the main shaft 4 to rotate. The reducer in this invention corresponds to a main shaft 4 diameter of 35mm. To increase the diameter further, a larger reducer would be needed, increasing cost and volume. However, it is necessary to avoid the first high-pressure passage 42 inside the main shaft 4 having a thin wall. Therefore, it can only be offset from the through hole 52. Furthermore, to ensure that the flow rate is not affected after the offset, a flared groove 44 is provided at the upper end of the first high-pressure passage 42, and the diameter of the flared groove 44 extends to the position of the through hole 52.
[0019] The second flange 5 has a groove 54 on its upper surface, and the first flange 6 has a boss 63 at its bottom that matches the groove 54. The boss 63 is inserted into the groove 54 to further ensure the radial stability of the first flange 6 and the second flange 5. A sealing gasket 53 is provided between the first flange 6 and the second flange 5 to ensure sealing. Similarly, a sealing ring 10 is provided between the fixed cover 11 and the main shaft 4 to ensure sealing.
[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dual-path spindle car wash machine, characterized in that, The system includes a fixed plate (1), a motor assembly (3), a main shaft (4), a dual-channel rotary joint (7), a high-pressure car wash arm (8), and a low-pressure car wash arm (9). A fixed base (2) is fixedly mounted on the fixed plate (1). The motor assembly (3) is fixedly mounted on the fixed base (2). The main shaft (4) is vertically mounted inside the motor assembly (3) and is driven to rotate by the motor assembly (3). The upper end of the main shaft (4) extends through the motor assembly (3) and is fixedly mounted with a second flange (5). The lower end of the dual-channel rotary joint (7) is provided with a first flange (6). The main shaft (4) is fixedly connected to the second flange (5) by bolts. The lower end of the main shaft (4) extends through to the bottom of the fixing plate (1) and is fixedly connected to the fixing cover (11). The high-pressure car wash arm (8) is fixedly installed on the side surface of the fixing cover (11). The low-pressure car wash arm (9) is fixedly installed on the low-pressure car wash arm (9). A conductive slip ring (12) is provided on the main shaft (4) and below the corresponding fixing seat (2). The dual-channel rotary joint (7) includes a third low-pressure channel (71) and a third high-pressure channel (72). The first flange (6) corresponds to the third low-pressure channel (71) and the third high-pressure channel (72). A second low-pressure passage (61) and a second high-pressure passage (62) are provided at the position of the three high-pressure passages (72). A socket (51) is provided on the second flange (5) corresponding to the position of the second low-pressure passage (61). A through hole (52) is provided on the second flange (5) corresponding to the position of the second high-pressure passage (62). A first low-pressure passage (41) and a first high-pressure passage (42) are provided parallel to the axis inside the main shaft (4). An extension platform (45) is provided at the upper end of the first low-pressure passage (41) and inserted into the socket (51). The lower end of the first low-pressure passage (41) is opened to be close to the main shaft. A low-pressure outlet connector (43) is provided at the bottom of the shaft (4) and is radially connected. A low-pressure connector (91) is provided on the end face of the low-pressure car wash arm (9) and the low-pressure connector (91) and the low-pressure outlet connector (43) are connected by a water pipe. The upper end of the first high-pressure passage (42) is connected to the through hole (52) and the lower end extends to the bottom of the main shaft (4). The fixed cover (11) forms a cavity with the lower end of the main shaft (4). A high-pressure water port (81) is provided on the high-pressure car wash arm (8) and the fixed cover (11). The high-pressure water port (81) is connected to the first high-pressure passage (42) through the cavity.
2. The dual-path spindle car wash machine according to claim 1, characterized in that, The third high-pressure passage (72), the second high-pressure passage (62) and the through hole (52) are on the same axis and have the same diameter. The first high-pressure passage (42) and the through hole (52) have the same diameter and are designed to be offset. The upper end of the first high-pressure passage (42) is provided with a flared groove (44), and the diameter of the flared groove (44) covers the position of the through hole (52).
3. A dual-path spindle car wash machine according to claim 1, characterized in that, The second flange (5) has a groove (54) on its upper surface, and the first flange (6) has a boss (63) at its bottom that matches the groove (54). The boss (63) is inserted into the groove (54).
4. A dual-path spindle car wash machine according to claim 1, characterized in that, A sealing gasket (53) is provided between the first flange (6) and the second flange (5).
5. A dual-path spindle car wash machine according to claim 1, characterized in that, A sealing ring (10) is provided between the fixed cover (11) and the main shaft (4).