An automatic cleaning and air-drying system for steering knuckles

Abstract

The present invention discloses an automatic cleaning and air-drying system for steering knuckles, which includes a frame and a conveying chain assembly, a cleaning device, and an air-drying device installed on the frame. The conveying chain assembly includes a conveying chain and steering knuckle clamps installed on the conveying chain. A cleaning channel for the steering knuckle clamps to pass through is provided inside the cleaning device, and a plurality of cleaning nozzles facing the steering knuckles are circumferentially arranged in the cleaning channel. An air-drying channel for the steering knuckle clamps after cleaning to pass through is provided inside the air-drying device, and a plurality of air-drying nozzles facing the steering knuckles are circumferentially arranged in the air-drying channel. The present invention drives the steering knuckles on the steering knuckle clamps to automatically pass through the cleaning channel and the air-drying channel in sequence through the conveying chain. Since the cleaning nozzles for cleaning the steering knuckles are circumferentially arranged in the cleaning channel, and the air-drying nozzles for air-drying the steering knuckles are circumferentially arranged in the air-drying channel, the steering knuckles can be cleaned and air-dried without dead angles in the circumferential direction, thereby improving the cleaning efficiency and reducing the labor production cost and labor intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and particularly relates to an automatic cleaning and air-drying system for steering knuckles. Background Art

[0002] The steering knuckle 10 is one of the main parts on the automotive steering axle. Its function is to bear the load at the front of the vehicle, support and drive the front wheels to rotate around the kingpin to steer the vehicle. Among them, in terms of structure, referring to the appendix Figure 11 , the steering knuckle 10 is a special-shaped shell structure with a concave cavity 102 in the middle, and a positioning hole 101 is provided at the bottom of the concave cavity 102. After the steering knuckle 10 is machined, oil stains and cutting fluid will adhere to its surface, and further cleaning is required.

[0003] At present, most of the existing automatic cleaning and air-drying system equipment for steering knuckles in China uses conveyor belts for conveying, that is, the workpieces are randomly placed on the conveyor belt for cleaning and air-drying. Due to the particularity of the steering knuckle workpieces, there will be dead corners when the workpieces are cleaned and air-dried, making it difficult to carry out thorough cleaning and drying, and manual cooperation is still needed to clean and air-dry the dead corner parts. The production efficiency is greatly affected, and at the same time, the labor cost is increased, and the labor intensity of the workers is also very high. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an automatic cleaning and air-drying system for steering knuckles.

[0005] To solve the above technical problem, the present invention discloses an automatic cleaning and air-drying system for steering knuckles, which includes a frame and a conveying chain assembly, a cleaning device and an air-drying device installed on the frame. The conveying chain assembly includes a conveying chain and a steering knuckle clamp installed on the conveying chain. A cleaning channel for the steering knuckle clamp to pass through is provided in the cleaning device, and a plurality of cleaning spray heads facing the steering knuckle are circumferentially arranged in the cleaning channel. An air-drying channel for the steering knuckle clamp to pass through after cleaning is provided in the air-drying device, and a plurality of air-drying spray heads facing the steering knuckle are circumferentially arranged in the air-drying channel.

[0006] Furthermore, the air-drying device further includes a blower and an air-drying pipe group. The air-drying pipe group includes a plurality of air-drying annular pipes arranged along the conveying direction of the steering knuckle. The air-drying annular pipes form the air-drying channel, and the air-drying spray heads are circumferentially arranged on the air-drying annular pipes.

[0007] Further, the cleaning device further includes a fresh water tank, a recovery tank, a water pump, an oil scraping device, and a cleaning pipe group. Two ends of the water pump are respectively connected to the fresh water tank and the cleaning pipe group. Two ends of the oil scraping device are respectively connected to the recovery tank and the fresh water tank. The cleaning pipe group is arranged above the recovery tank. The cleaning pipe group includes a plurality of cleaning annular pipes arranged along the conveying direction of the knuckle. The cleaning annular pipes form the cleaning channels, and the cleaning nozzles are circumferentially arranged on the cleaning annular pipes.

[0008] Further, a filter screen for filtering the water flowing back into the recovery tank is arranged below the cleaning pipe group. A diversion partition plate is arranged outside the filter screen, and the diversion partition plate is inclined towards the filter screen.

[0009] Further, a three-way valve is further included. The water pump includes a working water pump and a standby water pump. The working water pump and the standby water pump are respectively connected to the first input port and the second input port of the three-way valve. The output port of the three-way valve is connected to the cleaning pipe group, and a filter is connected to the output port of the three-way valve.

[0010] Further, a pressure regulating pipeline installed with a valve is further included. A pressure gauge is arranged on the pipeline connecting the three-way valve and the cleaning pipe group. The input end of the pressure regulating pipeline is connected to the output port of the three-way valve, and the other end is connected to the fresh water tank.

[0011] Further, an electric heater for heating water is further installed in the fresh water tank and / or the recovery tank.

[0012] Further, the knuckle fixture includes a positioning seat, a guide rod, a pressing handle, a driving seat, a driving rod, and a pressing rod. One end of the guide rod is installed on the positioning seat. The pressing handle and the driving seat are both slidably connected to the guide rod. One end of the driving rod is hinged to the driving seat, and the other end is hinged to one end of the pressing rod. The other end of the pressing rod is hinged to the positioning seat. A clamping pin is installed at the other end of the guide rod. Axial holes and circumferential holes that can cooperate with the clamping pin are arranged on the pressing handle. The circumferential holes are connected to both ends of the axial holes. A positioning table that can cooperate with the positioning holes is arranged on the positioning seat. One end of the pressing rod presses the knuckle against the bottom of the concave cavity to fix the knuckle at the positioning table.

[0013] Further, a driving seat inner cavity is arranged in the driving seat. A return spring sleeved outside the guide rod is arranged in the driving seat inner cavity. A limiting ring limited by the side wall of the driving seat inner cavity is arranged at the end of the pressing handle. One end of the return spring abuts against the bottom of the driving seat inner cavity, and the other end abuts against the pressing handle.

[0014] Further, it further includes a fixture mounting bracket, the positioning seat is rotatably mounted on the fixture mounting bracket, and the fixture mounting bracket is cantilever-mounted on one side of the conveying chain and extends into the air drying channel and the cleaning channel.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] The present invention can facilitate the stable installation of the knuckle fixture through the conveying chain. At the same time, since the conveying chain drives the knuckles on the knuckle fixture to automatically pass through the cleaning channel and the air drying channel in sequence, and since the cleaning nozzles for cleaning the knuckles are arranged circumferentially in the cleaning channel, and the air drying nozzles for air drying the knuckles are arranged circumferentially in the air drying channel, the knuckles can be cleaned and air dried without dead angles in the circumferential direction, thereby improving the cleaning efficiency and reducing the labor cost and labor intensity of manual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The partial drawings constituting this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is the front view schematic diagram of the automatic cleaning and air drying system for knuckles disclosed in the embodiment of the present invention;

[0019] Figure 2 is the side view schematic diagram of the automatic cleaning and air drying system for knuckles disclosed in the embodiment of the present invention;

[0020] Figure 3 is the axonometric schematic diagram of the air drying device disclosed in the embodiment of the present invention;

[0021] Figure 4 is the axonometric schematic diagram of the cleaning device disclosed in the embodiment of the present invention;

[0022] Figure 5 is the front view schematic diagram of the cleaning device disclosed in the embodiment of the present invention;

[0023] Figure 6 is the side view schematic diagram of the cleaning device disclosed in the embodiment of the present invention;

[0024] Figure 7 is the internal schematic diagram of the clean water tank and the recovery tank disclosed in the embodiment of the present invention;

[0025] Figure 8 is the axonometric schematic diagram of the knuckle fixture disclosed in the embodiment of the present invention;

[0026] Figure 9 is the front view schematic diagram of the knuckle fixture disclosed in the embodiment of the present invention;

[0027] Figure 10 isFigure 9 Schematic diagram of the A-A cross-section

[0028] Figure 11 Schematic diagram of the cooperation between the steering knuckle fixture disclosed in the embodiment of the present invention and the steering knuckle

[0029] Legend description:

[0030] 1. Frame

[0031] 2. Conveyor chain assembly; 21. Motor assembly; 22. Sprocket

[0032] 3. Cleaning device; 32. Fresh water tank; 33. Recycling tank; 34. Water pump; 341. Working water pump; 342. Standby water pump; 35. Oil scraping device; 351. Oil scraping device mounting seat; 36. Cleaning pipe group; 361. Cleaning ring pipe; 362. Cleaning nozzle; 38. Cleaning channel; 39. Filter screen; 310. Flow guiding partition; 311. Three-way valve; 3111. First input port; 3112. Second input port; 3113. Output port; 312. Filter; 313. Valve; 314. Pressure regulating pipeline; 315. Pressure gauge; 316. Liquid level detector; 317. Electric heater; 318. Water flow filter screen

[0033] 4. Air drying device; 41. Air drying channel; 42. Fan filter device; 43. Fan; 44. Air drying pipe group; 441. Air drying nozzle; 442. Air drying ring pipe

[0034] 5. Steering knuckle fixture; 51. Positioning seat; 511. Positioning table; 52. Guide rod; 521. Clamping pin; 53. Pressing handle; 531. Axial hole; 532. Circumferential hole; 533. Limit ring; 54. Driving seat; 541. Driving seat inner cavity; 542. Driving bottom plate; 543. Driving sleeve; 55. Driving rod; 56. Pressing rod; 561. Pressing head; 57. Return spring; 58. Fixture mounting frame; 59. Bearing seat; 591. Oil injection hole; 512. Rolling bearing

[0035] 6. Conveyor chain

[0036] 7. Steering knuckle conveying direction

[0037] 8. Electric control cabinet

[0038] 10. Steering knuckle; 101. Positioning hole; 102. Concave cavity Detailed implementation manners

[0039] For the convenience of understanding the present invention, the following will describe the present invention more comprehensively and meticulously in combination with the specification drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments

[0040] As shown Figures 1 - 11 in the figure, the present invention discloses an automatic cleaning and air-drying system for a steering knuckle, which includes a frame 1, a conveying chain assembly 2, a cleaning device 3 and an air-drying device 4 installed on the frame 1, and is overall controlled by an electric control cabinet 8 on one side of the frame 1. The frame 1 is of a frame structure. The conveying chain assembly 2 includes a conveying chain 6 and a steering knuckle fixture 5 installed on the conveying chain 6. The steering knuckle fixture 5 can grip the steering knuckle 10 in a manual, semi-automatic or fully automatic clamping manner. In this embodiment, manual clamping is adopted. Among them, the conveying chain 6 is intermittently driven by a motor assembly 21, a sprocket 22 and a tensioning wheel. The cleaning device 3 is installed below the air-drying device 4. The conveying chain 6 includes an upper conveying chain and a lower conveying chain. The cleaning device 3 cooperates with the lower conveying chain, and the upper conveying chain cooperates with the air-drying device 4. A cleaning channel 38 for the steering knuckle fixture 5 to pass through is provided in the cleaning device 3. A plurality of cleaning nozzles 362 facing the steering knuckle 10 installed on the steering knuckle fixture 5 are circumferentially arranged in the cleaning channel 38. An air-drying channel 41 for the steering knuckle fixture 5 to pass through after cleaning is provided in the air-drying device 4. A plurality of air-drying nozzles 441 facing the steering knuckle 10 installed on the steering knuckle fixture 5 are circumferentially arranged in the air-drying channel 41. Thus, the stable installation of the steering knuckle fixture 5 can be facilitated through the conveying chain 6. At the same time, since the conveying chain 6 drives the steering knuckle 10 on the steering knuckle fixture 5 to automatically pass through the cleaning channel 38 and the air-drying channel 41 in sequence, and since the cleaning nozzles 362 for cleaning the steering knuckle 10 are circumferentially arranged in the cleaning channel 38, and the air-drying nozzles 441 for air-drying the steering knuckle 10 are circumferentially arranged in the air-drying channel 41, the steering knuckle 10 can be cleaned and air-dried circumferentially without dead angles, thereby improving the cleaning efficiency and reducing the labor production cost and labor intensity.

[0041] In this embodiment, as Figure 3 shown, the air-drying device 4 further includes a blower 43 and an air-drying pipe group 44, including two to three groups. The blower 43 is a centrifugal blower, and a blower filtering device 42 is provided at the inlet, and both are installed on the top of the frame 1. The air-drying pipe group 44 includes a plurality of air-drying annular pipes 442 arranged along the steering knuckle conveying direction 7. Among them, the air-drying annular pipe 442 is a closed or non-closed ring, and the air-drying annular pipe 442 forms an air-drying channel 41. The air-drying nozzles 441 are circumferentially arranged on the air-drying annular pipe 442. Specifically, the air-drying nozzles 441 include various forms, such as the shape of an air knife or the shape of an atomizing nozzle.

[0042] In this embodiment, as Figures 4 - 7As shown, the cleaning device 3 also includes a clean water tank 32, a recovery water tank 33, a water pump 34, an oil scraper 35 and a cleaning pipe group 36. The water pump 34 is installed on the outside of the top of the clean water tank 32 to facilitate quick maintenance and heat dissipation. The input end of the water pump 34 is connected to the clean water tank 32, and the output end is connected to the cleaning pipe group 36. The two ends of the oil scraper 35 are respectively connected to the recovery water tank 33 and the clean water tank 32. The water in the recovery water tank 33 enters the clean water tank 32 after the oil is removed, so as to realize water recycling. The oil scraper 35 adopts an existing device available on the market, which is installed on the oil scraper mounting seat 351 above the recovery water tank 33. The oil is uniformly processed through the collection box of the oil scraper 35. The cleaning pipe group 36 is arranged above the recovery water tank 33, so that the water after cleaning the steering knuckle falls downward and flows back into the recovery water tank 33. The cleaning pipe group 36 includes a plurality of cleaning annular pipes 361 arranged along the conveying direction 7 of the steering knuckle. The cleaning annular pipes 361 are all detachably arranged for easy replacement. Various branch pipes with cleaning nozzles 362 can also be installed on the cleaning annular pipes 361 to improve the cleaning efficiency and quality. The cleaning annular pipes 361 are arranged in parallel and spaced apart. The cleaning annular pipes 361 of this embodiment are non-closed annular wrapping structures. The cleaning annular pipes 361 are formed with a cleaning channel 38 for conveying the steering knuckle, so that the conveying chain clamped with the steering knuckle can pass through the cleaning channel 38. The cleaning annular pipes 361 are circumferentially arranged with a plurality of cleaning nozzles 362 facing the cleaning channel 38, so that the cleaning nozzles 362 can spray water to the steering knuckle 10 in all directions to achieve clean cleaning. The present invention forms a cleaning channel 38 for knuckle conveying by a cleaning annular tube 361 arranged along the knuckle conveying direction 7. When the conveying chain with the knuckle passing through in sequence, the cleaning nozzle 362 can spray water to the knuckle in all directions, thereby realizing fast and efficient cleaning of the knuckle. Furthermore, the recovery water tank 33 can realize oil removal of the water after cleaning through the oil scraper device 35, thereby realizing the recycling of water and saving water cost. The cleaning device 3 can be set to multiple, respectively for cleaning and rinsing.

[0043] In this embodiment, in order to prevent solid particles (such as chips) adhered to the steering knuckle from entering the recovery water tank 33, a filter screen 39 for filtering the water flowing back into the recovery water tank 33 is provided below the cleaning pipe group 36, and a guide baffle 310 is provided on the outside of the filter screen 39. The guide baffle 310 is arranged obliquely toward the filter screen 39. On the one hand, the guide baffle 310 can collect water, and at the same time, it can also prevent the water sprayed by the cleaning nozzle 362 from overflowing or entering the clean water tank 32. Among them, the recovery water tank 33 is also provided with a water flow filter screen 318 behind the oil scraper device 35 to further filter the water entering the clean water tank 32.

[0044] In this embodiment, since the cleaning work is usually carried out continuously for 24 hours, in order to ensure the continuity of the cleaning work, it further includes a three-way valve 311. The water pump 34 includes a working water pump 341 and a standby water pump 342. The working water pump 341 and the standby water pump 342 are respectively connected to the first input port 3111 and the second input port 3112 of the three-way valve 311. The output port 3113 of the three-way valve 311 is connected to the cleaning pipe group 36. The three-way valve 311 is a manual valve with a handle. During normal operation, the working water pump 341 works, the first input port 3111 and the output port 3113 are communicated, and the second input port 3112 is closed, and the standby water pump 342 stops. When the working water pump 341 fails, the three-way valve 311 is switched, the second input port 3112 and the output port 3113 are communicated, the standby water pump 342 is started, and the working water pump 341 is repaired, thus avoiding line stoppage.

[0045] In this embodiment, in order to prevent the cleaning nozzle 362 from being blocked, a filter 312 is connected to the output port 3113 of the three-way valve 311. The filter 312 is a commercially available conventional Y-type filter. At the same time, in order to adjust the water pressure of the cleaning annular pipe 361, in this embodiment, it further includes a pressure regulating pipeline 314 equipped with a valve 313. A pressure gauge 315 is provided on the pipeline connecting the three-way valve 311 and the cleaning pipe group 36. The input end of the pressure regulating pipeline 314 is connected to the output port 3113 of the three-way valve 311, and the other end is connected to the clean water tank 32. When the reading of the pressure gauge 315 is too large, the valve 313 is further opened to increase the pressure relief amount of the pressure regulating pipeline 314, and vice versa, the valve 313 is adjusted smaller.

[0046] In this embodiment, a liquid level detector 316 for detecting the liquid level is further installed in the recovery water tank 33 to ensure the supply amount of the cleaning water. At the same time, considering that the higher the water temperature, the easier it is to clean the oil stain, in this embodiment, an electric heater 317 for heating water is further installed in the recovery water tank 33. It is a conventional resistance heater, and its heating end extends into the recovery water tank 33.

[0047] In this embodiment, as Figures 8 - 11As shown in the figure, the knuckle fixture 5 includes a positioning seat 51, a guide rod 52, a downward pressing handle 53, a driving seat 54, a driving rod 55 and a pressing rod 56. The downward pressing handle 53 is a T-shaped structure with a central hole at the bottom. One end of the guide rod 52 is installed on the positioning seat 51. The central holes of the downward pressing handle 53 and the driving seat 54 are both slidably connected to the guide rod 52. At the same time, the downward pressing handle 53 can rotate circumferentially relative to the guide rod 52. One end of the driving rod 55 is hinged to the driving seat 54 (a fork structure for hinging is provided at the lower end of the driving rod 55), and the other end is hinged to one end of the pressing rod 56. The other end of the pressing rod 56 is hinged to the positioning seat 51 (similarly, a fork structure for hinging is provided at the upper end of the positioning seat 51). A clamping pin 521 is installed at the other end of the guide rod 52. The clamping pin 521 can directly adopt the method of screwing in a cylindrical screw, so as to utilize the screw head of the cylindrical screw. The clamping pin 521 is arranged radially along the guide rod 52. An axial hole 531 and a circumferential hole 532 that can cooperate with the clamping pin 521 are provided on the downward pressing handle 53. The circumferential hole 532 is connected to both ends of the axial hole 531 and is vertically arranged relative to the axial hole 531. The axial hole 531 and the circumferential hole 532 are integrally in the shape of "]" on the cylindrical outer wall of the downward pressing handle 53. A positioning table 511 that cooperates with the positioning hole 101 is provided on the positioning seat 51. Thus, the knuckle 10 can be inserted on the positioning table 511 through the positioning hole 101 to achieve central positioning. And the pressing head 561 at one end of the pressing rod 56 fixes the knuckle 10 at the positioning table 511 by pressing on the bottom of the concave cavity 102, that is, the positioning and clamping of the knuckle 10 are completed. In the present invention, the downward pressing handle 53 drives the driving seat 54 and then drives the driving rod 55. The driving rod 55 drives the pressing head 561 of the pressing rod 56 to move outward and downward. When pressing to the bottom of the concave cavity 102, rotate the downward pressing handle 53, so as to clamp the clamping pin 521 in the circumferential hole 532, thus achieving the anti-loosening effect. Through this fixture, the positioning and clamping of the knuckle 10 can be realized, laying a foundation for the subsequent cleaning process.

[0048] In this embodiment, in order to achieve uniform circumferential clamping of the knuckle 10, the driving rod 55 and the pressing rod 56 are evenly distributed in multiple groups along the circumference of the guide rod 52, specifically three groups. At the same time, in order to avoid damage to the outer surface when clamping the bottom of the concave cavity 102, a cylindrical surface structure that contacts the bottom of the concave cavity 102 is provided on the outer side of the pressing head 561 at one end of the pressing rod 56, and the outer diameter is larger than the end of the driving rod 55. Among them, the pressing head 561 is an integral structure on the pressing rod 56.

[0049] In this embodiment, a driving seat inner cavity 541 is provided in the driving seat 54. The central hole of the driving seat 54 penetrates into the driving seat inner cavity 541. A return spring 57 sleeved outside the guiding rod 52 is provided in the driving seat inner cavity 541. A limiting ring 533 limited by the side wall of the driving seat inner cavity 541 is provided at the lower end of the pressing handle 53, so as to prevent the pressing handle 53 from slipping off along the guiding rod 52. One end of the return spring 57 abuts against the bottom of the driving seat inner cavity 541, and the other end abuts against the pressing handle 53. After the steering knuckle 10 is cleaned, when the pressing handle 53 is rotated in the reverse direction, under the driving action of the return spring 57, the pressing handle 53 will automatically move upward until the limiting ring 533 contacts the side wall of the driving seat inner cavity 541. At this time, the maximum outer diameters of the pressing handle 53, the driving seat 54, the driving rod 55 and the pressing rod 56 are smaller than the positioning hole 101, and thus the steering knuckle 10 can be taken out upward.

[0050] In this embodiment, in order to facilitate the formation of the driving seat inner cavity 541, the driving seat 54 includes a detachably connected driving bottom plate 542 and a driving sleeve 543. The driving bottom plate 542 and the driving sleeve 543 are connected by screws, and both the driving bottom plate 542 and the driving sleeve 543 are slidably connected to the guiding rod 52.

[0051] In this embodiment, in order to facilitate the full-automatic cleaning of the subsequent steering knuckle 10, a fixture mounting bracket 58 is further included. The fixture mounting bracket 58 is provided with a connection hole for mounting on the conveying chain 6. The fixture mounting bracket 58 is cantilever-mounted on one side of the conveying chain 6 and extends into the air-drying channel 41 and the cleaning channel 38. The conveying chain 6 is away from the air-drying nozzles 441 and the cleaning nozzles 362, so that neither the cleaning nor the air-drying will act on the conveying chain. The positioning seat 51 is rotatably mounted on the fixture mounting bracket 58. Thus, during the cleaning by the nozzles, the steering knuckle 10 can rotate under the action of water power, thereby improving the cleaning efficiency and reducing the number of nozzles. In order to reduce the rotation resistance, one end of the guiding rod 52 passes through the positioning seat 51 and is pivotally connected to a bearing seat 59 in a sealed manner. A plurality of rolling bearings 512 are installed in the bearing seat 59. Specifically, one is installed at each end of the inner cavity of the bearing seat 59. The guiding rod 52 is matched with the bearing holes of the rolling bearings 512, and the fixture mounting bracket 58 is fixedly connected to the bearing seat 59. At the same time, an oil injection hole 591 is provided on the side wall of the bearing seat 59, which is convenient for injecting lubricating oil to further reduce the rotation resistance.

[0052] Although the present invention has been disclosed above in its preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic cleaning and air-drying system for steering knuckles, characterized in that It includes a frame (1), a conveying chain assembly (2), a cleaning device (3), and a drying device (4) mounted on the frame (1). The conveying chain assembly (2) includes a conveying chain (6) and a knuckle fixture (5) mounted on the conveying chain (6). A cleaning channel (38) for the knuckle fixture (5) to pass through is provided inside the cleaning device (3). A plurality of cleaning spray nozzles (362) facing the knuckle (10) are circumferentially arranged on the cleaning channel (38). A drying channel (41) for the knuckle fixture (5) to pass through after cleaning is provided inside the drying device (4). A plurality of drying spray nozzles (441) facing the knuckle (10) are circumferentially arranged on the drying channel (41). The knuckle fixture (5) includes a positioning seat (51), a guide rod (52), a pressing handle (53), a driving seat (54), a driving rod (55), and a pressing rod (56). One end of the guide rod (52) is mounted on the positioning seat (51). The pressing handle (53) and the driving seat (54) are both slidably connected to the guide rod (52). One end of the driving rod (55) is hinged to the driving seat (54), and the other end is hinged to one end of the pressing rod (56). The other end of the pressing rod (56) is hinged to the positioning seat (51). A clamping pin (521) is mounted at the other end of the guide rod (52). An axial hole (531) and a circumferential hole (532) that can cooperate with the clamping pin (521) are provided on the pressing handle (53). The circumferential hole (532) is connected to both ends of the axial hole (531). A positioning platform (511) that cooperates with the positioning hole (101) is provided on the positioning seat (51). The pressing head (561) at one end of the pressing rod (56) fixes the knuckle (10) at the positioning platform (511) by pressing on the bottom of the cavity (102). A driving seat inner cavity (541) is provided inside the driving seat (54). A return spring (57) sleeved outside the guide rod (52) is provided inside the driving seat inner cavity (541). A limiting ring (533) limited by the side wall of the driving seat inner cavity (541) is provided at the end of the pressing handle (53). One end of the return spring (57) abuts against the bottom of the driving seat inner cavity (541), and the other end abuts against the pressing handle (53).

2. The knuckle automatic cleaning and air-drying system according to claim 1, wherein The drying device (4) includes a blower (43) and a drying pipe group (44). The drying pipe group (44) includes a plurality of drying annular pipes (442) arranged along the knuckle conveying direction (7). The drying annular pipes (442) form the drying channel (41). The drying spray nozzles (441) are circumferentially arranged on the drying annular pipes (442).

3. The knuckle automatic cleaning and air-drying system according to claim 1, wherein The cleaning device (3) includes a fresh water tank (32), a recovery tank (33), a water pump (34), an oil scraping device (35), and a cleaning pipe group (36). Both ends of the water pump (34) are respectively connected to the fresh water tank (32) and the cleaning pipe group (36). Both ends of the oil scraping device (35) are respectively connected to the recovery tank (33) and the fresh water tank (32). The cleaning pipe group (36) is arranged above the recovery tank (33). The cleaning pipe group (36) includes a plurality of cleaning annular pipes (361) arranged along the steering knuckle conveying direction (7). The cleaning annular pipe (361) forms the cleaning channel (38). The cleaning nozzles (362) are circumferentially arranged on the cleaning annular pipe (361).

4. The knuckle automatic cleaning and air-drying system according to claim 3, characterized in that, A filter screen (39) for filtering the water flowing back into the recovery tank (33) is arranged below the cleaning pipe group (36). A diversion partition plate (310) is arranged outside the filter screen (39). The diversion partition plate (310) is inclined towards the filter screen (39).

5. The knuckle automatic cleaning and air-drying system according to claim 4, characterized in that, The cleaning device (3) further includes a three-way valve (311). The water pump (34) includes a working water pump (341) and a standby water pump (342). The working water pump (341) and the standby water pump (342) are respectively connected to the first input port (3111) and the second input port (3112) of the three-way valve (311). The output port (3113) of the three-way valve (311) is connected to the cleaning pipe group (36). A filter (312) is connected to the output port (3113) of the three-way valve (311).

6. The knuckle automatic cleaning and air-drying system according to claim 5, characterized in that The cleaning device (3) further includes a pressure regulating pipeline (314) equipped with a valve (313). A pressure gauge (315) is arranged on the pipeline connecting the three-way valve (311) and the cleaning pipe group (36). The input end of the pressure regulating pipeline (314) is connected to the output port (3113) of the three-way valve (311), and the other end is connected to the fresh water tank (32).

7. The knuckle automatic cleaning and air-drying system according to claim 3, wherein The fresh water tank (32) and / or the recovery tank (33) is further equipped with an electric heater (317) for heating water.

8. The knuckle automatic cleaning and air-drying system according to claim 1, wherein, The steering knuckle fixture (5) further includes a fixture mounting frame (58). The positioning seat (51) is rotatably mounted on the fixture mounting frame (58). The fixture mounting frame (58) is cantilever-mounted on one side of the conveying chain (6) and extends into the air drying channel (41) and the cleaning channel (38).

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