A differential housing cleaning machine fixed-point cleaning mechanism and a cleaning method thereof

Abstract

The application discloses a differential shell cleaning machine fixed-point cleaning mechanism and a cleaning method thereof, and relates to the technical field of workpiece cleaning. The fixed-point cleaning mechanism comprises a cleaning table, a circulating device is internally installed in the cleaning table, a plate is installed at the moving end of the circulating device, a placing device for placing a differential shell is fixedly installed in the interior of the plate, and a moving device is arranged. The unique multi-degree-of-freedom spray washing assembly composed of a moving ring, a rotating ring and a deflection piece enables the spray head to realize comprehensive accurate positioning and posture adjustment in the inner cavity of the differential shell, and combined with the pre-path planning based on a three-dimensional digital model, the high-pressure water flow can be accurately guided to the known difficult-to-clean area (such as a dead angle and an oil channel), so that the fixed-point and concentrated flushing is realized, the problems of insufficient impact force and cleaning blind area existing in the traditional multi-spray-head covering cleaning are effectively solved, and the cleaning effect and efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of workpiece cleaning technology, specifically to a differential housing cleaning machine with a fixed-point cleaning mechanism and a cleaning method thereof. Background Technology

[0002] The differential is a core component of the automotive transmission system. During the machining process, iron filings, oil stains, abrasive particles and other impurities may remain in the inner cavity of its housing. If it is not cleaned thoroughly, these impurities will mix with the lubricating oil during assembly and vehicle operation, accelerating the wear of gears and bearings, seriously affecting the service life of the differential and driving safety. Thorough and efficient cleaning of the differential housing before assembly is a crucial process.

[0003] For example, patent publication number "CN211217862U", entitled "A Differential Housing Cavity Cleaning Device", includes a workbench, a support on the workbench, a drive motor on the support, a first cylinder on the drive shaft of the drive motor, a baffle at one end of the first cylinder, a second cylinder at one end of the baffle, a first connecting rod hinged to the cylinder body of the second cylinder, and a second connecting rod hinged to the piston rod end of the second cylinder. One end of the first connecting rod and one end of the second connecting rod are rotatably connected to each other. Two inverted L-shaped cleaning racks are symmetrically arranged on the workbench. One of the cleaning racks has bristles on its outer side, and the other cleaning rack has several nozzles connected to a water pump. The water pump is connected to a water tank. The above patent provides a differential housing cavity cleaning device to improve cleaning efficiency. When the above-mentioned patent is used, the limited water supply flow is dispersed due to the setting of multiple nozzles working at the same time, resulting in a decrease in the water pressure and flow rate of each nozzle, insufficient cleaning impact, and difficulty in effectively removing stubborn dirt attached to corners, oil passages and other difficult-to-clean areas. The fixed nozzles cannot achieve precise point cleaning of specific areas, resulting in cleaning blind spots, low efficiency and waste of resources. Therefore, a differential housing cleaning machine point cleaning mechanism and its cleaning method have been invented. Summary of the Invention

[0004] The purpose of this invention is to provide a differential housing cleaning machine with a fixed-point cleaning mechanism and a cleaning method thereof, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixed-point cleaning mechanism for a differential housing cleaning machine, the fixed-point cleaning mechanism comprising: A cleaning station, wherein a circulation device is installed inside the cleaning station, and a plate is installed on the moving end of the circulation device; A mounting device for housing the differential housing is fixedly installed inside the plate. A mobile device is installed inside the washing station. A spray cleaning assembly for rinsing the inside of the differential housing is installed at the moving end of the moving device. A water supply device for supplying water to the spray washing assembly is installed between the spray washing assembly and the washing table. The spray washing assembly includes: The frame is fixed to the mobile end of the mobile device; The power unit, which enables the moving ring to move back and forth, is installed inside the frame; The movable ring has one side fixed to the movable end of the power unit; A rotating ring, with one side of the rotating ring and the other side of the moving ring rotatably connected; A fixed frame, one end of which is fixed to the outer wall of the rotating ring; A circular ring, with its outer wall rotatably connected to the inner wall of the frame; A connector, one end of which is fixed to one side of the ring; Angle fitting, one end of which is rotatably connected to the other end of the connector, and the interior of the fixing frame is movably connected to one end of the angle fitting; The spray head, used to spray water into the differential housing, is fixedly installed inside the offset component; A rotating device is installed between the frame and the rotating ring. It is used to fix the ring to drive the ring to rotate and drive the rotating ring and the ring to rotate synchronously. When the moving ring moves back and forth, it drives the rotating ring and the fixed frame to move relative to the ring, so that the deflector is deflected about the rotating connection with the connecting member.

[0006] The power device is characterized by the following: a first motor is fixedly installed inside the frame; a moving rod is slidably connected to the outer wall of the frame and the inner wall of the frame, and the other end of the moving rod is fixed to one side of the moving ring; a turntable is fixed to the bottom of the turntable and the output end of the first motor; and a limiting frame is fixed to one side of the limiting frame and the bottom end of the limiting frame is movably connected to the top end of the turntable.

[0007] The rotating device is characterized by the following features: a second motor is fixedly installed inside a frame, a bidirectional transmission device is fixedly connected inside the frame, the output end of the second motor is fixedly connected to the power input end of the bidirectional transmission device, a transmission shaft is fixedly connected to the power output end of the bidirectional transmission device, the outer wall of the transmission shaft is slidably connected to the inner wall of the rotating ring, and a connecting frame for realizing synchronous rotation of the transmission shaft and the ring is fixedly connected between the outer wall of the transmission shaft and the ring.

[0008] The feature is that the water supply device includes a water pump, which is installed on the washing platform. The output end of the water pump is fixedly connected to a water supply hose, and the discharge end of the water supply hose is fixedly connected to a water storage tray. The water storage tray is fixedly installed inside the frame. A sealing ring is rotatably connected to one side of the water storage tray. The inner wall of the sealing ring is fixed to the outer wall of the circular ring. A connecting hose is fixedly connected to the water outlet end of the sealing ring. The water outlet end of the connecting hose is fixed to the water inlet end of the spray head.

[0009] The feature is that the moving device includes: a first telescopic component, which is fixedly installed inside the washing table; a moving frame, which is fixedly installed at the telescopic end of the first telescopic component, with the bottom end of the frame and the top end of the moving frame fixed together, and a through hole for a water supply hose to pass through inside the moving frame.

[0010] The feature is that the placement device includes a placement component, which is fixedly installed on the top of the plate for contacting the differential housing and placing the differential housing. A fixing ring is fixedly connected to the outer wall of the placement component, and the bottom end of the fixing ring is fixed to the top end of the plate.

[0011] A cleaning method for a differential housing cleaning machine, employing the aforementioned fixed-point cleaning mechanism for a differential housing cleaning machine, further comprising: the spray cleaning assembly being electrically connected to a control terminal; and the cleaning method including: Step 1: Establish a three-dimensional digital model of the differential housing, mark the difficult-to-clean areas in the inner cavity of the three-dimensional digital model, and obtain the location data and dirt data of the difficult-to-clean areas; Step 2: Design cleaning parameters based on dirt data. The cleaning parameters include the target deflection angle of the deflector, the target water pressure of the spray head, and the residence time. Step 3: Process the location data of the difficult-to-clean areas using a path optimization algorithm to obtain the shortest path data for adjusting the total movement time of the spray washing components; Step 4: Combine path data and cleaning parameters to obtain cleaning data, and perform preliminary cleaning of the differential housing based on the cleaning data; Step 5: Thoroughly flush the inner cavity of the differential housing.

[0012] Furthermore, the path problem optimization algorithm includes: Spatial nodes are established based on the location data of difficult-to-clean areas, and the movement time between spatial nodes is calculated, including the spray head attitude adjustment time. An overall path optimization algorithm is adopted, starting from the initial spray head posture, and connecting spatial nodes in sequence to obtain the optimized cleaning path and the total time for optimizing spray head posture adjustment. The optimized cleaning path and the total time for optimizing spray head posture adjustment are combined to obtain the path data with the shortest total movement time.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This differential housing cleaning machine's fixed-point cleaning mechanism and method, through a unique multi-degree-of-freedom spraying assembly composed of a moving ring, a rotating ring, and an angled component, enables the spray head to achieve comprehensive and precise positioning and attitude adjustment within the differential housing cavity. Combined with pre-planned path based on a three-dimensional digital model, it can accurately guide high-pressure water flow to known difficult-to-clean areas (such as dead corners and oil passages) for targeted and concentrated rinsing. This effectively solves the problems of insufficient impact and blind spots in traditional multi-nozzle coverage cleaning, significantly improving cleaning effect and efficiency.

[0014] Meanwhile, the power unit uses a motor to drive the turntable. Through the cooperation between the arc hole on the limiting frame and the cylinder on the turntable, the rotational motion is converted into precise linear reciprocating motion. The rotating device realizes the synchronous rotation of the rotating ring and the circular ring through the bidirectional transmission device and the connecting frame. This mechanical transmission structure is not only accurate and reliable in motion conversion, but also has a compact layout of each component, which effectively reduces the volume of the entire spraying assembly and avoids motion interference in the narrow cavity.

[0015] Through the rotating connection design of the water storage pan and the sealing ring, combined with the flexible connection method of the connecting hose, this structure ensures that a continuous and stable high-pressure water flow can be delivered to the spray head without being affected by the 360-degree rotation and 0-100-degree deflection of the spray head, providing a reliable pressure guarantee for efficient cleaning. Attached Figure Description

[0016] Figure 1 This is an isometric drawing of the present invention; Figure 2 This is an isometric view of the placement device of the present invention; Figure 3 This is an isometric view of the plate component of the present invention; Figure 4 This is a front view of the mobile device of the present invention; Figure 5 This is an external diagram of the framework of the present invention; Figure 6 This is an isometric view of the rotating device of the present invention; Figure 7 This is an isometric view of the rotating device and spray washing assembly of the present invention. Figure 8 This is an isometric view of the spray washing assembly of the present invention; Figure 9 This is a partial isometric view of the spray washing assembly of the present invention; Figure 10 This is a schematic diagram of the cleaning method of the present invention.

[0017] In the diagram: 1. Washing platform; 2. Plate; 3. Placement device; 301. Placement component; 302. Fixing ring component; 4. Spray washing assembly; 401. Frame; 402. Motor No. 1; 403. Moving rod; 404. Turntable; 405. Limiting frame; 406. Moving ring; 407. Rotating ring; 408. Fixing frame; 409. Circular ring; 410. Connecting component; 411. Angle component; 412. Spray head; 5. Water supply device; 501. Water supply hose; 502. Water storage tray; 503. Sealing ring; 504. Connecting hose; 6. Moving device; 601. Telescopic component No. 1; 602. Moving frame; 7. Rotating device; 701. Motor No. 2; 702. Bidirectional transmission device; 703. Drive shaft; 704. Connecting frame. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 - Figure 10 As shown, the present invention provides a technical solution: a differential housing cleaning machine with a fixed-point cleaning mechanism, the fixed-point cleaning mechanism comprising: Cleaning station 1, with a circulation device installed inside the cleaning station 1, and a plate 2 installed on the moving end of the circulation device; The placement device 3, used for placing the differential housing, is fixedly installed inside the plate 2; Mobile device 6 is installed inside the cleaning station 1; The spray washing assembly 4, which is used to rinse the inside of the differential housing, is installed at the moving end of the moving device 6. Water supply device 5, which is used to supply water to the spray washing assembly 4, is installed between the spray washing assembly 4 and the cleaning table 1. Spray washing component 4 includes: Frame 401, frame 401 is fixed to the moving end of the moving device 6; A power unit, used to enable the moving ring 406 to move back and forth, is installed inside the frame 401; The movable ring 406 is fixed on one side to the movable end of the power unit; Rotating ring 407, one side of rotating ring 407 is rotatably connected to the other side of moving ring 406; The fixing frame 408 is fixed at one end to the outer wall of the rotating ring 407; The outer wall of the ring 409 is rotatably connected to the inner wall of the frame 401; Connector 410, one end of connector 410 is fixed to one side of ring 409; Angle piece 411, one end of angle piece 411 is rotatably connected to the other end of connector 410, and the interior of fixing bracket 408 is movably connected to one end of angle piece 411; Spray head 412, used for spraying water into the differential housing, is fixedly installed inside the angle member 411; The rotating device 7 is installed between the frame 401 and the rotating ring 407. It is used to fix the ring 409 to drive the ring 409 to rotate and drive the rotating ring 407 and the ring 409 to rotate synchronously. When the moving ring 406 moves back and forth, it drives the rotating ring 407 and the fixed frame 408 to move relative to the ring 409, so that the deflecting member 411 deflects around the rotating connection with the connecting member 410.

[0020] The power unit includes a primary motor 402, which is fixedly installed inside the frame 401; a moving rod 403, the outer wall of which is slidably connected to the inner wall of the frame 401, and the other end of which is fixed to one side of the moving ring 406; a turntable 404, the bottom of which is fixed to the output end of the primary motor 402; and a limiting frame 405, one end of which is fixed to one side of the limiting frame 405, and the bottom end of the limiting frame 405 is movably connected to the top end of the turntable 404.

[0021] The rotating device 7 includes a second motor 701, which is fixedly installed inside the frame 401. A bidirectional transmission device 702 is fixedly connected inside the frame 401. The output end of the second motor 701 and the power input end of the bidirectional transmission device 702 are fixedly connected. A transmission shaft 703 is fixedly connected to the power output end of the bidirectional transmission device 702. The outer wall of the transmission shaft 703 is slidably connected to the inner wall of the rotating ring 407. A connecting frame 704 for realizing synchronous rotation of the transmission shaft 703 and the ring 409 is fixedly connected between the outer wall of the transmission shaft 703 and the ring 409.

[0022] The water supply device 5 includes a water pump, which is installed on the cleaning platform 1. The output end of the water pump is fixedly connected to a water supply hose 501, and the discharge end of the water supply hose 501 is fixedly connected to a water storage tray 502. The water storage tray 502 is fixedly installed inside the frame 401. A sealing ring 503 is rotatably connected to one side of the water storage tray 502. The inner wall of the sealing ring 503 is fixed to the outer wall of the ring 409. A connecting hose 504 is fixedly connected to the water outlet end of the sealing ring 503. The water outlet end of the connecting hose 504 is fixed to the water inlet end of the spray head 412.

[0023] The mobile device 6 includes: a first telescopic component 601, which is fixedly installed inside the washing table 1; and a mobile frame 602, which is fixedly installed at the telescopic end of the first telescopic component 601. The bottom end of the frame 401 and the top end of the mobile frame 602 are fixed together. The inside of the mobile frame 602 is provided with a through hole for the water supply hose 501 to pass through.

[0024] The placement device 3 includes a placement member 301, which is used to contact the differential housing and realize the placement of the differential housing. The placement member 301 is fixedly installed on the top of the plate 2. A fixing ring member 302 is fixedly connected to the outer wall of the placement member 301. The bottom end of the fixing ring member 302 is fixed to the top end of the plate 2.

[0025] A cleaning method for a differential housing cleaning machine employs the aforementioned fixed-point cleaning mechanism for a differential housing cleaning machine. The spray cleaning component 4 is electrically connected to a control terminal. The cleaning method includes: Step 1: Establish a three-dimensional digital model of the differential housing, mark the difficult-to-clean areas in the inner cavity of the three-dimensional digital model, and obtain the location data and dirt data of the difficult-to-clean areas; Step 2: Design cleaning parameters based on dirt data. The cleaning parameters include the target deflection angle of the deflector 411, the target water pressure of the spray head 412, and the residence time. Step 3: Process the location data of the difficult-to-clean areas using a path optimization algorithm to obtain the shortest path data for adjusting the total movement time of the spray washing component 4; Step 4: Combine path data and cleaning parameters to obtain cleaning data, and perform preliminary cleaning of the differential housing based on the cleaning data; Step 5: Thoroughly flush the inner cavity of the differential housing.

[0026] Path problem optimization algorithms include: Spatial nodes are established based on the location data of difficult-to-clean areas, and the movement time between spatial nodes is calculated. The movement time includes the attitude adjustment time of the spray head 412. An overall path optimization algorithm is adopted. Starting from the initial spray head posture, spatial nodes are connected sequentially to obtain the optimized cleaning path and the total time for adjusting the posture of the optimized spray head 412. The path data with the shortest total movement time is obtained by combining the optimized cleaning path and the total time for adjusting the posture of the optimized spray head 412.

[0027] Workflow summary: The operator places the differential housing on the placement device 3. The plate 2 moves intermittently under the drive of the circulation device. When the differential housing moves to the cleaning station inside the cleaning platform 1, the moving device 6 pushes the spraying assembly 4 into the inner cavity of the housing. The control terminal, according to the preset program, coordinates the control of motor 402 and motor 701 to drive the spray head 412 to move to each difficult cleaning point. The spray head is then sprayed at a fixed point or by oscillating spray with the set water pressure and residence time to complete the cleaning of the inner cavity. At the same time, an external wall spraying device can be installed on the cleaning platform 1 to clean the outer wall of the housing.

[0028] By using a small number of high-pressure spray heads with precise movement instead of multiple spray heads covering a large area, the water pressure of the spray heads is reduced. If the limited water supply is distributed to too many spray heads, the water pressure and flow rate of each spray head will decrease, resulting in insufficient cleaning impact. By concentrating the flow into a few spray heads, a high-pressure water jet with sufficient kinetic energy can be formed to effectively remove stubborn dirt. At the same time, each spray head is precisely controlled, allowing for targeted and concentrated rinsing of specific hard-to-clean areas (such as corners and oil ducts), resulting in higher efficiency.

[0029] like Figure 6 , Figure 7 and Figure 8 As shown, the moving device 6 enables the reciprocating movement of the plate 2. At one end of the cleaning platform 1, a person places the differential housing on the placement device 3. The moving device 6 causes the plate 2 to move, thereby enabling the plate 2 to move. The interior of the cleaning platform 1 can clean the outer wall of the differential housing, while the spray washing component 4 can rinse the inner wall of the differential housing. After rinsing is completed, the plate 2 moves the differential housing to the other end of the cleaning platform 1 so that the person can remove the differential housing from the placement device 3. Then the plate 2 moves back to one end of the cleaning platform 1. The movement of the plate 2 is intermittent. When the plate 2 stops moving, the person can place the differential housing on the placement device 3. At the other end of the cleaning platform 1, the person can remove the differential housing from the plate 2.

[0030] The circulation device can be a chain conveyor, which moves and stops the plate 2 by moving the sprocket. In this application, the outer wall of the ring 409 can be rotatably connected to the frame 401 by the sealing ring 503. The outer wall of the ring 409 and the inner wall of the sealing ring 503 are fixed, while the outer wall of the sealing ring 503 and the inner wall of the frame 401 are rotatably connected.

[0031] like Figure 9As shown, an arc-shaped hole is provided at the bottom of the limiting frame 405, and a cylinder is fixedly connected to the top of the turntable 404. Through the cooperation between the arc-shaped hole and the cylinder, the cylinder acts on the limiting frame 405 when it rotates, causing the limiting frame 405 to move back and forth within a set range. Since the limiting frame 405 is fixed to the moving rod 403, and the moving rod 403 and the frame 401 are slidably connected, the limiting frame 405 can only move back and forth. The output end of the first motor 402 rotates, thereby realizing the rotation of the turntable 404 and the cylinder. Through transmission, the moving rod 403 and the moving ring 406 move back and forth. The moving rod 403 and the moving ring 406 are fixed together, so the moving rod 403, the moving ring 406 and the rotating ring 407 can move synchronously.

[0032] like Figure 7 , Figure 8 and Figure 9 As shown, the output end of motor 701 rotates, and through the transmission of the internal device of bidirectional transmission device 702, the transmission shaft 703 rotates. The rotating ring 407 is slidably connected to the transmission shaft 703, causing the transmission shaft 703 and the rotating ring 407 to rotate synchronously. A groove is provided on the outer wall of the transmission shaft 703, and the inner wall of the rotating ring 407 is slidably connected to the outer wall of the transmission shaft 703 through the groove. Simultaneously, the rotating ring 407 rotates synchronously when the transmission shaft 703 rotates. The rotation of the transmission shaft 703 and the rotating ring 407 causes the connecting frame 704, the ring 409, and the sealing ring 503, which are fixed relative to the transmission shaft 703, to rotate synchronously. The fixing frame 408, which is fixed relative to the rotating ring 407, also rotates synchronously. Combined, these elements cause the connecting piece 4 to rotate synchronously. 10. The synchronous rotation of the angled member 411 and the spray head 412 is achieved by the rotation of the transmission shaft 703, which allows the spray head 412 to rotate 360°. The water storage plate 502 and the sealing ring 503 ensure that the spray head 412 can still supply water during rotation. The power unit uses a motor to drive the turntable 404. The rotational motion is converted into precise linear reciprocating motion through the cooperation between the arc hole on the limiting frame 405 and the cylinder on the turntable 404. The rotating device 7 achieves the synchronous rotation of the rotating ring 407 and the circular ring 409 through the bidirectional transmission device 702 and the connecting frame 704. This mechanical transmission structure is not only accurate and reliable in motion conversion, but also has a compact layout of each component, which effectively reduces the volume of the entire spray assembly 4 and avoids motion interference in the narrow cavity.

[0033] The moving ring 406 causes the rotating ring 407 and the fixed frame 408 to move synchronously. During the movement of the fixed frame 408, the relative position between the fixed frame 408 and the ring 409 changes. The fixed frame 408 has a second arc hole. The deflecting member 411 is movably connected to the fixed frame 408 through the second arc hole. Due to the change in the relative position between the fixed frame 408 and the connecting member 410, the angle of the deflecting member 411 is deflected through the second arc hole, so that the deflecting member 411 and the spray head 412 can be deflected arbitrarily within the range of 0-100 degrees.

[0034] Spray washing components 4 are respectively set at both ends of the frame 401. The bidirectional transmission device 702 ensures that the spray heads 412 in the two spray washing components 4 can rotate 360°. Movable rods 403 are fixedly connected to both sides of the limiting frame 405, so that the spray heads 412 in the two spray washing components 4 can deflect arbitrarily within the range of 0-100 degrees. Through the deflection of 0-100 degrees, combined with the spray washing components 4 located at both ends of the frame 401, the inside of the differential housing can be flushed. Through the unique multi-degree-of-freedom spray washing components 4 composed of moving ring 406, rotating ring 407, and deflecting member 411, the spray heads 412 can achieve comprehensive and precise positioning and attitude adjustment in the inner cavity of the differential housing. Combined with the pre-path planning based on the three-dimensional digital model, the high-pressure water flow can be accurately guided to known difficult-to-clean areas (such as dead corners and oil passages) for fixed-point and concentrated flushing. This effectively solves the problems of insufficient impact force and blind spots in traditional multi-nozzle coverage cleaning, and significantly improves the cleaning effect and efficiency.

[0035] When the water pump starts, cleaning water is delivered to the water storage pan 502 through the water supply hose 501. With the continuous input of subsequent cleaning water, the cleaning water between the water storage pan 502 and the sealing ring 503 is sprayed out from the spray head 412 through the connecting hose 504. The rotatable connection between the water storage pan 502 and the sealing ring 503 ensures water supply to the spray head 412 even during 360° rotation. The connecting hose 504 ensures water supply to the spray head 412 within a deflection angle of 0-100°. Through the rotatable connection design of the water storage pan 502 and the sealing ring 503, combined with the flexible connection of the connecting hose 504, this structure ensures a continuous and stable high-pressure water flow that is unaffected by the spray head 412's 360° rotation and 0-100° deflection, providing reliable pressure assurance for efficient cleaning.

[0036] After the circulation device moves plate 2 into the interior of the cleaning platform 1, the telescopic end of the first telescopic component 601 extends, and the moving frame 602 and frame 401 move, thereby moving the spray washing assembly 4 into the interior of the differential housing to clean the differential housing. After the telescopic end of the first telescopic component 601 retracts the moving frame 602 and frame 401, the circulation device moves plate 2 to the other end of the cleaning platform 1.

[0037] Spray heads 412 are respectively installed at both ends of the frame 401. The spray heads 412 can rotate 360° and deflect arbitrarily within the range of 0-100 degrees. Combined with the spray heads 412 at both ends, a comprehensive cleaning of the interior of the frame 401 can be achieved. While achieving a comprehensive cleaning, parameters such as cleaning time and water pump speed can be increased for hard-to-clean areas to ensure the cleaning effect of hard-to-clean areas. A spray device is fixedly connected to the top of the cleaning station 1. When the spray washing assembly 4 cleans the inside of the differential housing, the spray device can clean the outer wall of the differential housing, thereby achieving overall cleaning of the differential housing.

[0038] The placement component 301 is provided with a shape that is easy to adapt to the outer wall of the differential housing. This allows the differential housing to be placed well on the placement component 301 and the angle of the differential housing on the placement component 301 to be fixed. The placement component 301 is fixed to the plate 2 by the fixing ring 302.

[0039] The control terminal internally stores a three-dimensional digital model of the differential housing, with markings indicating areas that are difficult to clean.

[0040] The dirt data includes the attributes and dimensions of the hard-to-clean areas. Based on the attributes and dimensions of the hard-to-clean areas, combined with historical data, cleaning parameters for the hard-to-clean areas are obtained.

[0041] The spray head 412 is aligned with the spatial node. When switching spatial nodes, the spray head 412 will adjust to align with the new spatial node. The time taken for the spray head 412 to adjust its attitude is calculated. The overall path optimization algorithm includes simulating the total time of spray head 412 attitude adjustment under different cleaning paths by computer, selecting the cleaning path with the shortest total time as the optimized cleaning path. After directional cleaning of the spatial node and difficult-to-clean areas, the interior of the differential housing is then thoroughly rinsed. The attitude adjustment time of the spray head 412 is the time taken for the spray head 412 to rotate and deflect.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A fixed-point cleaning mechanism for a differential housing cleaning machine, characterized in that, The fixed-point cleaning mechanism includes: A cleaning station (1) is provided with a circulation device inside the cleaning station (1), and a plate (2) is installed on the moving end of the circulation device. The mobile device (6) is installed inside the cleaning station (1); The spray cleaning assembly (4), which is used to rinse the inside of the differential housing, is installed on the moving end of the moving device (6); The spray washing assembly (4) includes: The frame (401) is fixed to the moving end of the mobile device (6); A power unit for enabling the moving ring (406) to move back and forth is installed inside the frame (401); The movable ring (406) is fixed on one side and the movable end of the power unit; A rotating ring (407) is rotatably connected to one side of a moving ring (406); A fixing frame (408) is fixed at one end to the outer wall of a rotating ring (407); The outer wall of the ring (409) and the inner wall of the frame (401) are rotatably connected; A connector (410) is fixed at one end to one side of a ring (409); Angle piece (411) is rotatably connected to one end of the angle piece (411) and the other end of the connector (410), and the interior of the fixing frame (408) is movably connected to one end of the angle piece (411); The spray head (412) for spraying water into the differential housing is fixedly installed inside the deflector (411); A rotating device (7) is installed between the frame (401) and the rotating ring (407) for fixing with the ring (409) to drive the ring (409) to rotate and drive the rotating ring (407) and the ring (409) to rotate synchronously. When the moving ring (406) moves back and forth, it drives the rotating ring (407) and the fixed frame (408) to move relative to the ring (409), so that the deflecting member (411) deflects around the rotating connection with the connecting member (410).

2. The differential housing cleaning machine's fixed-point cleaning mechanism according to claim 1, characterized in that: The placement device (3) for placing the differential housing is fixedly installed inside the plate (2); A water supply device (5) for supplying water to the spray washing assembly (4) is installed between the spray washing assembly (4) and the cleaning table (1); The power unit includes a first motor (402), which is fixedly installed inside the frame (401); a moving rod (403), the outer wall of which is slidably connected to the inner wall of the frame (401), and the other end of which is fixed to one side of the moving ring (406); a turntable (404), the bottom of which is fixed to the output end of the first motor (402); and a limiting frame (405), one end of which is fixed to one side of the limiting frame (405), and the bottom end of the limiting frame (405) is movably connected to the top end of the turntable (404).

3. The differential housing cleaning machine fixed-point cleaning mechanism according to claim 1, characterized in that: The rotating device (7) includes a second motor (701), which is fixedly installed inside the frame (401). A bidirectional transmission device (702) is fixedly connected inside the frame (401). The output end of the second motor (701) and the power input end of the bidirectional transmission device (702) are fixedly connected. A transmission shaft (703) is fixedly connected to the power output end of the bidirectional transmission device (702). The outer wall of the transmission shaft (703) and the inner wall of the rotating ring (407) are slidably connected. A connecting frame (704) for realizing the synchronous rotation of the transmission shaft (703) and the ring (409) is fixedly connected between the outer wall of the transmission shaft (703) and the ring (409).

4. The differential housing cleaning machine fixed-point cleaning mechanism according to claim 2, characterized in that: The water supply device (5) includes a water pump, which is installed on the cleaning platform (1). The output end of the water pump is fixedly connected to a water supply hose (501). The discharge end of the water supply hose (501) is fixedly connected to a water storage pan (502). The water storage pan (502) is fixedly installed inside the frame (401). A sealing ring (503) is rotatably connected to one side of the water storage pan (502). The inner wall of the sealing ring (503) is fixed to the outer wall of the ring (409). The water outlet end of the sealing ring (503) is fixedly connected to a connecting hose (504). The water outlet end of the connecting hose (504) is fixed to the water inlet end of the spray head (412).

5. A differential housing cleaning machine with fixed-point cleaning mechanism according to claim 4, characterized in that: The mobile device (6) includes: a first telescopic component (601), which is fixedly installed inside the cleaning table (1); a mobile frame (602), which is fixedly installed at the telescopic end of the first telescopic component (601), with the bottom end of the frame (401) and the top end of the mobile frame (602) fixed together, and the interior of the mobile frame (602) having a through hole for the water supply hose (501) to pass through.

6. The differential housing cleaning machine fixed-point cleaning mechanism according to claim 2, characterized in that: The placement device (3) includes a placement member (301) for contacting the differential housing and placing the differential housing. The placement member (301) is fixedly installed on the top of the plate (2). A fixing ring (302) is fixedly connected to the outer wall of the placement member (301). The bottom end of the fixing ring (302) is fixed to the top end of the plate (2).

7. A cleaning method for a differential housing cleaning machine, employing a fixed-point cleaning mechanism for a differential housing cleaning machine as described in any one of claims 1-6, characterized in that, The spray washing assembly (4) is electrically connected to a control terminal, and the cleaning method includes: Step 1: Establish a three-dimensional digital model of the differential housing, mark the difficult-to-clean areas in the inner cavity of the three-dimensional digital model, and obtain the location data and dirt data of the difficult-to-clean areas; Step 2: Design cleaning parameters based on dirt data. The cleaning parameters include the target deflection angle of the deflector (411), the target water pressure of the spray head (412), and the residence time. Step 3: The location data of the difficult-to-clean area is processed by the path problem optimization algorithm to obtain the shortest path data for adjusting the total movement time of the spray washing component (4); Step 4: Combine path data and cleaning parameters to obtain cleaning data, and perform preliminary cleaning of the differential housing based on the cleaning data; Step 5: Thoroughly flush the inner cavity of the differential housing.

8. The cleaning method of a differential housing cleaning machine according to claim 7, characterized in that, The path problem optimization algorithm includes: Spatial nodes are established based on the location data of difficult-to-clean areas, and the movement time between spatial nodes is calculated. The movement time includes the attitude adjustment time of the spray head (412). The overall path optimization algorithm is adopted. Starting from the initial spray head posture, the spatial nodes are connected in sequence to obtain the optimized cleaning path and the total time for adjusting the posture of the optimized spray head (412). The path data with the shortest total movement time is obtained by combining the optimized cleaning path and the total time for adjusting the posture of the optimized spray head (412).

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