Waterless cleaning system for locomotive accessories

Abstract

The utility model discloses a waterless cleaning system for locomotive accessories, which comprises a cleaning room, a turnover device, a dry ice making device, a dry ice spraying device, a mobile robot and an oil mist purifying device, and the turnover device is used for fixing and turning over the locomotive accessories to be cleaned; the dry ice spraying device is used for mixing granular dry ice and compressed air and spraying the mixture to the locomotive accessories to be cleaned so as to clean the locomotive accessories. The mobile robot is used for clamping and moving the dry ice spraying device so that the dry ice spraying device can conduct multi-angle cleaning on the locomotive accessories. A dry ice cleaning technology is adopted, granular dry ice and compressed air are mixed to generate high-speed airflow for cleaning, the dry ice is converted into a gas state from a solid state, micro-explosive impact force is directly generated, and dirt on the surfaces of locomotive accessories is crushed and removed. In the cleaning process, dry ice is instantly sublimated into gaseous carbon dioxide to be volatilized into the air, no residual matter exists, and secondary pollution cannot be generated.

Description

Technical Field

[0001] This utility model belongs to the field of locomotive parts cleaning technology, specifically relating to a waterless cleaning system for locomotive parts. Background Technology

[0002] During long-term use, various dusts and fumes can easily accumulate on the surface of locomotive parts, forming grime that may affect their normal operation. Therefore, it is necessary to clean the locomotive parts to remove the grime adhering to their surfaces.

[0003] Chinese patent document CN213287876U discloses a washing machine for cleaning locomotive parts, including a washing tank with a placement plate inside. The side wall of the washing tank has an inlet pipe and an outlet pipe. Multiple branch pipes are provided on the side wall of the inlet pipe, and each branch pipe has a nozzle connected to its end away from the inlet pipe. A collection box is fixedly connected to the bottom of the washing tank, and a water collection hood is fixedly connected to the inside of the washing tank. The water collection hood communicates with the collection box, and the collection box is connected to the outlet pipe. The washing tank has a moving mechanism inside for moving the nozzles. This design has the following advantages and effects: it allows the nozzles to swing back and forth while the parts rotate, greatly increasing the contact area between the water and the parts, ensuring thorough cleaning and guaranteeing the cleaning effect.

[0004] Existing locomotive parts cleaning technology mainly uses mechanical water washing. This cleaning method has the problem of not cleaning thoroughly enough, and water washing is relatively wasteful of water resources. Utility Model Content

[0005] The purpose of this invention is to provide a waterless cleaning system for locomotive parts, which solves the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a waterless cleaning system for locomotive parts, comprising:

[0007] A cleaning room is used to provide space for cleaning operations;

[0008] A flipping device, installed in the cleaning room, is used to fix and flip the locomotive parts to be cleaned;

[0009] Dry ice making equipment is used to convert liquid carbon dioxide into granular dry ice;

[0010] Dry ice spraying device is used to mix granular dry ice and compressed air and spray it onto locomotive parts to be cleaned.

[0011] Mobile robots are used to grip and move dry ice blasting devices to enable multi-angle cleaning of locomotive parts; and

[0012] Oil mist purification devices are used to purify the exhaust gas from cleanrooms.

[0013] As an optional embodiment of the above technical solution, the dry ice making device includes a dry ice making chamber, a pelletizing machine, and a collecting device. The dry ice making chamber is connected to a carbon dioxide storage tank via a carbon dioxide delivery pipe. A throttling valve is provided at one end of the carbon dioxide delivery pipe near the dry ice making chamber. The throttling valve is used to reduce the pressure of the liquid carbon dioxide, so that a portion of the liquid carbon dioxide absorbs heat and vaporizes in the dry ice making chamber, while the other portion of the liquid carbon dioxide cools and solidifies into block dry ice in the dry ice making chamber. The pelletizing machine is used to crush the block dry ice to obtain granular dry ice, and the collecting device is used to collect the granular dry ice.

[0014] As an optional implementation of the above technical solution, the pellet forming machine includes a hydraulic device, a compression cylinder, and a crushing mechanism. The hydraulic device is connected to the compression cylinder, and the movable end of the compression cylinder is connected to the crushing mechanism. The crushing mechanism extends into the dry ice making chamber to crush the block dry ice.

[0015] As an optional implementation of the above technical solution, the crushing mechanism includes a punch head, which is connected to the movable end of a compression cylinder. The compression cylinder is used to drive the punch head to reciprocate to crush block dry ice into granular dry ice.

[0016] As an optional implementation of the above technical solution, the clean room is equipped with a ventilation device, a lighting device, a warning device, and a carbon dioxide concentration detection device.

[0017] As an optional embodiment of the above technical solution, the flipping device includes a flipping base, a flipping frame, and a rotation drive device. The flipping frame is rotatably mounted on the flipping base and is used to fix the locomotive parts to be cleaned. The rotation drive device is used to drive the flipping frame to rotate on the flipping base.

[0018] As an optional embodiment of the above technical solution, the flipping frame includes a first flipping ring, a second flipping ring, and a support frame. The first flipping ring and the second flipping ring are rotatably engaged with the flipping seat. The two ends of the support frame are respectively connected to the first flipping ring and the second flipping ring. The support frame is provided with a positioning device and a clamping device. The positioning device is used to position the locomotive parts to be cleaned, and the clamping device is used to clamp and fix the locomotive parts to be cleaned.

[0019] As an optional implementation of the above technical solution, the dry ice spraying device includes a dry ice spray gun and a feeding mechanism. The dry ice spray gun is mounted on a mobile robot. The output end of the feeding mechanism is connected to the dry ice spray gun. One input end of the feeding mechanism is connected to a dry ice making device, and the other input end of the feeding mechanism is connected to a compressed air input pipe.

[0020] As an optional implementation of the above technical solution, the mobile robot includes a six-axis robot, a linear motion device, and a spray gun clamp. The six-axis robot is mounted on the linear motion device, which drives the six-axis robot to move along the length direction of the flipping device. The spray gun clamp is mounted on the six-axis robot and is used to clamp the dry ice spraying device.

[0021] As an optional implementation of the above technical solution, the oil mist purification device includes a purification chamber, inside which a mechanical filtration mechanism, an electrostatic adsorption mechanism, and an activated carbon adsorption mechanism are arranged in sequence. An air inlet and an exhaust outlet are provided on the outside of the purification chamber. The air inlet is connected to a collection hood through a pipe, and the collection hood is installed inside the clean room.

[0022] As an optional implementation of the above technical solution, the exhaust port is connected to a smoke exhaust pipe, the smoke exhaust pipe is equipped with a ventilation device, and the end of the smoke exhaust pipe is equipped with a rain cap.

[0023] The beneficial effects of this utility model are as follows:

[0024] This invention employs dry ice cleaning technology, utilizing a high-speed airflow generated by mixing granular dry ice and compressed air for cleaning. The dry ice transforms from a solid to a gaseous state, directly generating a micro-explosive impact force that breaks down and removes dirt from the surface of locomotive parts. During the cleaning process, the dry ice instantly sublimates into gaseous carbon dioxide and evaporates into the air, leaving no residue and preventing secondary pollution. Furthermore, combined with a mobile robot and a tilting device, the cleaning operation can achieve waterless and automated cleaning of locomotive parts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a waterless cleaning system for locomotive parts according to one embodiment of the present invention;

[0026] Figure 2 This is a flowchart of a waterless cleaning system for locomotive parts according to one embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a dry ice making device in one embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the cleaning room in one embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram of the flipping device in one embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of a mobile robot in one embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of an oil mist purification device in one embodiment of this utility model.

[0032] In the diagram: 1-Carbon dioxide storage tank; 2-Dry ice making device; 3-Clean room; 4-Tilting device; 5-Dry ice spraying device; 6-Mobile robot; 7-Control center; 8-Oil mist purification device;

[0033] 21-Dry ice making box; 22-Pellet forming machine; 23-Collection device; 24-Throttle valve; 25-Integrated shell; 26-Dry ice making room;

[0034] 31-Ventilation device;

[0035] 41-Flip seat; 42-Flip frame; 43-Slide rail;

[0036] 51-Dry ice spray gun; 52-Feeding mechanism;

[0037] 61-Six-axis robot; 62-Linear motion device; 63-Spray gun clamp;

[0038] 81-Purification chamber; 82-Collection hood; 83-Exhaust equipment; 84-Smoke exhaust pipe; 85-Rain cap. Detailed Implementation

[0039] like Figures 1-7 As shown, this embodiment provides a waterless cleaning system for locomotive parts, including: a carbon dioxide storage tank 1, a dry ice making device 2, a cleaning room 3, a tilting device 4, a dry ice spraying device 5, a mobile robot 6, an oil mist purification device 8, and a control center 7.

[0040] Among them, the carbon dioxide storage tank 1 is used to store and supply liquid carbon dioxide. The carbon dioxide storage tank 1 is a pressure vessel for storing cryogenic liquid carbon dioxide. The carbon dioxide storage tank 1 is connected to the dry ice making device 2 through a carbon dioxide delivery pipe, and can supply dry ice making raw materials to the dry ice making device 2.

[0041] The dry ice making unit 2 is used to convert liquid carbon dioxide into granular dry ice. The dry ice making unit 2 has an ice-making function, and the cleaning system includes two dry ice making units 2, with a maximum ice-making capacity of 300 kg / h, which can meet the dry ice supply needs of cleaning operations.

[0042] Cleaning chamber 3 provides a space for cleaning operations. It can be designed as a fixed structure or a telescopic structure, with extension and retraction controlled by a system. During cleaning operations, cleaning chamber 3 extends and covers the cleaning area, providing a sealed, independent space. After the operation is complete, cleaning chamber 3 retracts back to its fixed position, without affecting other operations. Cleaning chamber 3 includes ventilation, lighting, and a carbon dioxide concentration alarm.

[0043] The tilting device 4, located inside the cleaning chamber 3, is used to secure and tilt the locomotive parts to be cleaned. Before cleaning, the locomotive parts are transferred to the cleaning chamber 3 using a flatcar, and then secured to the tilting device 4. During cleaning, to better coordinate with the mobile robot 6, the tilting device 4 rotates the locomotive parts to different angles for cleaning.

[0044] The dry ice spraying device 5 is used to mix granular dry ice and compressed air and spray it onto the locomotive parts to be cleaned. The dry ice spraying device 5 has a cleaning function, and the cleaning system includes two dry ice spraying devices 5, which can clean both sides of the locomotive parts simultaneously.

[0045] Mobile robot 6 is used to hold and move dry ice spraying device 5 so that dry ice spraying device 5 can clean locomotive parts from multiple angles.

[0046] The oil mist purification device 8 is used to purify the exhaust gas from the cleaning room 3. The oil mist purification device 8 is connected to the cleaning room 3 through a pipeline, which can collect and filter the oil mist generated during the cleaning operation of the cleaning room 3, ensuring a clean and tidy working environment in the cleaning room 3, and ensuring that the exhaust gas meets the national industrial emission standards after treatment.

[0047] Control center 7 is used to control the working status of dry ice making device 2, tilting device 4, dry ice spraying device 5, and mobile robot 6. All equipment signals are connected to control center 7 to achieve centralized control. Operators start the work program on the control panel to realize the automated cleaning operation of locomotive parts.

[0048] This invention employs dry ice cleaning technology, utilizing a high-speed airflow generated by mixing granular dry ice and compressed air for cleaning. The dry ice transforms from a solid to a gaseous state, directly generating a micro-explosive impact force that breaks down and removes dirt from the surface of vehicle parts. During the cleaning process, the dry ice instantly sublimates into gaseous carbon dioxide and evaporates into the air, leaving no residue and preventing secondary pollution.

[0049] Dry ice cleaning principle:

[0050] 1. Impact effect: Particle dry ice impacts dirt at high speed (up to 150m / s) with compressed air, which can quickly destroy the adhesion between dirt and substrate, achieving efficient removal of dirt.

[0051] 2. Sublimation micro-explosion effect: When dry ice particles at -78 degrees Celsius come into contact with the surface of dirt, they will rapidly sublimate into gas, expanding in volume by 700-800 times instantly, producing a micro-explosion effect that powerfully peels the contaminants from the substrate surface without causing any damage.

[0052] 3. Low temperature effect: The extremely low temperature of dry ice (-79 degrees Celsius) can trigger a temperature difference reaction, resulting in different shrinkage rates of different materials, thereby promoting the detachment of contaminants from the substrate and further enhancing the cleaning effect.

[0053] This invention employs dry ice cleaning technology, combined with a mobile robot 6 and a tilting device 4 in a coordinated cleaning operation mode, to achieve waterless and automated cleaning of locomotive parts. Simultaneously, the equipment has a synchronous purification function, which can collect and purify oil mist and other pollutants generated during the cleaning process, preventing air pollution.

[0054] like Figure 2 and Figure 3 As shown, in this embodiment, the dry ice making device 2 includes a dry ice making chamber 21, a pelletizing machine 22, and a collecting device 23. The dry ice making chamber 21, pelletizing machine 22, and collecting device 23 are all housed inside an integrated housing 25, which is located within a dry ice making room 26. A carbon dioxide delivery pipe connects the dry ice making chamber 21 to the carbon dioxide storage tank 1. A throttling valve 24 is provided at one end of the carbon dioxide delivery pipe near the dry ice making chamber 21. The throttling valve 24 is used to depressurize the liquid carbon dioxide, causing a portion of the liquid carbon dioxide to absorb heat and vaporize within the dry ice making chamber 21, while the remaining portion cools and solidifies into block dry ice within the dry ice making chamber 21. The pelletizing machine 22 is used to crush the block dry ice to obtain granular dry ice, and the collecting device 23 is used to collect the granular dry ice.

[0055] Specifically, the pellet forming machine 22 includes a hydraulic device, a compression cylinder, and a crushing mechanism. The hydraulic device is connected to the compression cylinder, and the movable end of the compression cylinder is connected to the crushing mechanism. The crushing mechanism extends into the dry ice making chamber 21 to crush the block dry ice. Preferably, the crushing mechanism includes a punch head, which is connected to the movable end of the compression cylinder. The compression cylinder drives the punch head to reciprocate to crush the block dry ice into pellet dry ice.

[0056] Dry ice making principle: Inside the dry ice making chamber 21, high-pressure liquid carbon dioxide is converted into solid dry ice, which is then granulated by the pellet forming machine 22. The specific process is as follows:

[0057] 1. Carbon Dioxide Storage and Supply: Liquid carbon dioxide is kept under high pressure and low temperature in carbon dioxide storage tank 1 to maintain its liquid state. When it is necessary to produce granular dry ice, the liquid carbon dioxide in carbon dioxide storage tank 1 is transported to dry ice making box 21 through pipeline.

[0058] 2. Throttling Expansion: When liquid carbon dioxide flows from the carbon dioxide storage tank 1 to the dry ice making box 21, it passes through a throttling valve 24. Due to the small orifice of the throttling valve 24, the liquid carbon dioxide experiences a sudden pressure drop as it passes through. According to the Joule-Thomson effect, the temperature of the liquid carbon dioxide drops sharply. A portion of the liquid carbon dioxide rapidly vaporizes and absorbs heat, causing the remaining liquid carbon dioxide to cool rapidly and solidify into solid carbon dioxide, i.e., dry ice.

[0059] 3. Pellet Forming: Inside the dry ice making chamber 21, the solidified block of dry ice is compressed, cut, or broken into small pellets by the pellet forming machine 22. Common forming methods include spiral extrusion and piston forming. Spiral extrusion uses a rotating spiral rod to compress dry ice into pellets, while piston forming uses the reciprocating motion of a piston to press dry ice into pellets. The size and shape of these pellets can be controlled by adjusting the parameters of the pellet forming machine 22.

[0060] 4. Particle Collection and Output: The produced granular dry ice is discharged from the outlet of the dry ice making box 21 and enters the collection device 23. The collection device 23 typically includes a storage container and a conveying pipe, through which the granular dry ice can be collected for subsequent use or transportation.

[0061] This invention first produces dry ice in a dry ice making chamber 21 using a pelletizing machine 22. The dry ice is then transported to a collection device 23, where it is mixed with compressed air to clean locomotive parts. During cleaning, the granular dry ice is accelerated by high-pressure air and sprayed onto the surface of the object to be cleaned. Utilizing the combined effect of these three processes, dirt is quickly and thoroughly removed from the object's surface, achieving the cleaning purpose.

[0062] like Figure 4 As shown, in this embodiment, the cleaning room 3 is equipped with a ventilation device 31, a lighting device, a warning device, and a carbon dioxide concentration detection device, all of which are connected to the control center 7. In the waterless cleaning of locomotive parts, the cleaning room 3 provides a closed working environment for the cleaning operation. Through centralized system control, automated dry ice cleaning operations can be achieved.

[0063] The ventilation device 31 includes a supply fan and an air outlet. The supply fan should have good performance and stability, be equipped with a high-efficiency air supply function, and have an air supply volume of not less than 20,000 m³ / h. 3 / h. The air supply outlet is located on the top of the cleaning room 3, and an air supply fan is installed inside the air supply outlet.

[0064] The lighting system includes lamps, with lamps installed on both sides of the top of the fixed frame, providing uniform and bright illumination. The lamps use LED tubes, which are stable, safe, and have a long service life, ensuring that the overall illuminance of the cleaning room is no less than 300 Lux.

[0065] The warning device includes warning paper installed on both the fixed and movable frames, and a three-color (red, yellow, green) audible and visual alarm light located on the movable frame. During normal operation, the green light remains constantly on. When the cleaning chamber 3 is expanded or retracted, the yellow light flashes and the horn sounds. In case of equipment malfunction, the red light flashes and the horn sounds.

[0066] Cleanroom 3 is equipped with a carbon dioxide concentration detection device to detect whether the carbon dioxide concentration exceeds the standard, referring to the relevant requirements of standard GB16201-1996 "Hygienic Standard for Carbon Dioxide in Workshop Air".

[0067] like Figure 5 As shown, in this embodiment, the flipping device 4 includes a flipping base 41, a flipping frame 42, and a rotary drive device. The flipping frame 42 is rotatably mounted on the flipping base 41 and is used to fix the locomotive parts to be cleaned. The rotary drive device is used to drive the flipping frame 42 to rotate on the flipping base 41. The bottom of the flipping base 41 is provided with a slide rail 43 extending to the outside of the cleaning chamber 3, which facilitates the movement of the flipping base 41 along the slide rail 43 to transport the locomotive parts to be cleaned. The flipping frame 42 includes a first flipping ring, a second flipping ring, and a support frame. The first flipping ring and the second flipping ring are rotatably engaged with the flipping base 41. The two ends of the support frame are respectively connected to the first flipping ring and the second flipping ring. The support frame is provided with a positioning device and a clamping device. The positioning device is used to position the locomotive parts to be cleaned, and the clamping device is used to clamp and fix the locomotive parts to be cleaned. The rotary drive device is connected to the control center 7, which controls the flipping angle and flipping speed of the flipping frame 42. Based on the working state of the flipping frame 42, the mobile robot 6 precisely controls the movement trajectory and spraying parameters of the dry ice spraying device 5 to clean the locomotive parts in all directions.

[0068] The tilting frame 42 resembles a large frame made of high-strength metal to ensure it can support the weight of the diesel engine block. Rotating shafts are mounted at both ends of the tilting frame 42, and these shafts are connected to the tilting base 41 via bearings, allowing the tilting frame 42 to rotate around these shafts. The rotation drive device employs a servo motor and gear assembly; the servo motor has high-precision position and speed control capabilities. The servo motor drives the tilting frame 42 to rotate, enabling it to smoothly tilt the diesel engine block.

[0069] Locomotive Part Positioning and Clamping: First, the locomotive part (diesel engine block) is placed on the worktable of the tilting frame 42. The worktable is equipped with positioning devices, such as positioning pins or blocks, to accurately determine the position of the diesel engine block, ensuring consistent placement each time. Simultaneously, the clamping device automatically clamps the diesel engine block to prevent movement during tilting. The clamping device can use hydraulic or pneumatic clamps, and sensors detect whether the clamps are properly engaged, sending a signal back to the control center 7.

[0070] Angle Control: When dry ice cleaning of the diesel engine block is required, the control center 7 controls the servo motor to rotate according to a preset program. The servo motor drives the reducer, which in turn drives the tilting frame 42 to rotate around its axis. By precisely controlling the rotation angle of the servo motor, the diesel engine block can be tilted at different angles, allowing the mobile robot 6 to perform comprehensive and precise dry ice cleaning. For example, to clean the internal cavities of the diesel engine block, the tilting frame 42 can tilt the block to a specific angle, allowing the dry ice spray gun 51 to penetrate deep into the cavity for cleaning.

[0071] Speed ​​Adjustment: The rotation speed of the tilting frame 42 can be adjusted according to the requirements of the cleaning process. When cleaning some critical parts or areas requiring delicate operation, the tilting frame 42 will rotate at a slower speed so that the mobile robot 6 can more accurately control the direction and force of the dry ice spray. When cleaning some large-area surfaces, the tilting speed can be appropriately increased to improve cleaning efficiency.

[0072] Safety Protection: To ensure the safety of operators and equipment, the tilting frame 42 is equipped with multiple safety protection devices. For example, a light curtain sensor is installed around the tilting frame 42, which will immediately stop the movement of the tilting frame 42 when an object enters the light curtain area. In addition, an overload protection device is provided, which will stop the movement of the tilting frame 42 when the weight it bears exceeds a set value to prevent equipment damage.

[0073] The tilting frame 42 and the mobile robot 6 work in coordination: The tilting frame 42 and the mobile robot 6 work in coordination through the control center 7. When the tilting frame 42 tilts the diesel engine block to a certain angle, the mobile robot 6 receives the corresponding signal and then adjusts the position and angle of the nozzle to clean specific parts of the engine block. After cleaning, the tilting frame 42 tilts the engine block to the next position that needs cleaning, and the mobile robot 6 continues the cleaning operation. This cycle continues until the entire diesel engine block is cleaned.

[0074] In this embodiment, the dry ice spraying device 5 includes a dry ice spray gun 51 and a feeding mechanism 52. The dry ice spray gun 51 is mounted on the mobile robot 6. The output end of the feeding mechanism 52 is connected to the dry ice spray gun 51, one input end of the feeding mechanism 52 is connected to the dry ice making device 2, and the other input end of the feeding mechanism 52 is connected to a compressed air input pipe. The feeding mechanism 52 uses a feeding pump, which mixes granular dry ice and compressed air and delivers it to the dry ice spray gun 51. After being sprayed out by the dry ice spray gun 51, it cleans the locomotive parts.

[0075] like Figure 6 As shown, in this embodiment, the mobile robot 6 includes a six-axis robot 61, a linear motion device 62, and a spray gun clamp 63. The six-axis robot 61 is mounted on the linear motion device 62, which is mounted on the side wall of the cleaning chamber 3. The linear motion device 62 is used to drive the six-axis robot 61 to move along the length direction of the flipping device 4. The spray gun clamp 63 is mounted on the six-axis robot 61 and is used to clamp the dry ice spraying device 5.

[0076] The mobile robot 6 includes a six-axis robot 61 and a linear motion device 62. Working together, they not only expand the working range of the six-axis robot 61 but also improve its flexibility and efficiency, enabling it to complete complex and diverse tasks. In the waterless cleaning of locomotive parts, the dry ice spray gun 51 is fixed to the spray gun clamp 63. Through remote centralized control, the mobile robot 6 can work in conjunction with the tilting frame 42 to achieve automated cleaning operations according to a predetermined cleaning program.

[0077] The motion control principle of the six-axis robot 61: The six-axis robot 61 adopts existing technology and is typically composed of multiple joints, each equipped with a servo motor and an encoder. The servo motors precisely control the rotation angle and speed of the joints according to the instructions issued by the control center 7, while the encoders provide real-time feedback on the actual position information of the joints, forming a closed-loop control center 7. This enables the robot arm to achieve precise motion positioning, allowing it to accurately deliver the dry ice spray gun 51 to various parts of the diesel engine block that need cleaning.

[0078] Dry ice spraying principle: A dry ice spray gun 51 is installed at the end of a six-axis robot 61. Particle-shaped dry ice is transported to the dry ice spray gun 51 under the action of compressed air. Inside the dry ice spray gun 51, the particle-shaped dry ice mixes with high-pressure gas and is accelerated before being sprayed at high speed onto the surface of the diesel engine block. Utilizing the low-temperature properties of dry ice, the engine oil is rapidly cooled and embrittled. At the same time, the high-speed spray of particle-shaped dry ice has a certain impact force, which can peel off the embrittled oil layer from the engine block surface, achieving the purpose of cleaning.

[0079] Linear motion device 62: Serving as the seventh axis of the six-axis robot 61, it includes a linear track and a corresponding walking mechanism. The linear track is fixed to the ground, and the six-axis robot 61 moves along the linear track via the walking mechanism mounted on its bottom. The walking mechanism typically employs a rack and pinion or chain drive system, driven by a motor. The motor drives the gears or sprockets to rotate via a reducer, meshing with the rack or chain on the linear track, thus enabling the six-axis robot 61 to move linearly along the track. This drive method provides stable power and precise position control.

[0080] Positioning and Limiting Principle: Position sensors and limit switches are installed on the linear track to precisely control the position of the six-axis robot 61 and prevent it from exceeding the track's range. The position sensors monitor the robot's position on the track in real time and feed this information back to the control center 7. When the robot reaches the preset cleaning position, the control center 7 controls it to stop and begin cleaning operations based on the position sensor signal. The limit switches are triggered when the robot approaches the extreme positions at either end of the track, stopping it to prevent collisions and ensure equipment and personnel safety.

[0081] The linkage principle between the mobile robot 6 and the tilting frame 42: The six-axis robot 61, the linear motion device 62, and the tilting frame 42 are linked through the control center 7. During the cleaning process, the tilting frame 42 tilts the diesel engine block to different angles. The linear motion device 62, based on the position of the six-axis robot 61 and the cleaning task, moves the six-axis robot 61 along a straight track to a suitable position, enabling the six-axis robot 61 to perform comprehensive cleaning of different parts of the engine block. For example, when the tilting frame 42 tilts the engine block to a certain angle, requiring cleaning on one side, the linear motion device 62 drives the six-axis robot 61 to a suitable position on that side. The six-axis robot 61 then uses its joint movements to aim the dry ice spray gun 51 at the area to be cleaned. This linkage method enables efficient and automated cleaning of the diesel engine block.

[0082] This embodiment includes two mobile robots 6, which utilize existing mature technology. The six-axis robot 61 comprises a robot body, a teach pendant, a control chassis, and protective clothing, among other accessories. The six-axis robot 61 consists of six rotary joints, and its movement is achieved by motors driving the rotation of each joint. These joints can move in three planes, allowing the six-axis robot 61 to perform various tasks in three-dimensional space. The teach pendant is a tool used for robot programming, allowing direct control of the robot's motion, posture, speed, and other parameters. The teach pendant is equipped with a 10.7-inch touchscreen and buttons for controlling the robot's movement. The control chassis is responsible for the electrical control and power drive of the robot's joints. It includes components such as the robot's motor drive module, sensor module, and power supply module, primarily responsible for controlling the movement and force control of the robot's joints. The robot protective clothing is a protective cover for the robot during cleaning operations, featuring oil and water resistance and durability.

[0083] The linear motion device 62 controls the movement of the six-axis robot 61 through a program. The six-axis robot 61 is located on a linear track and can move along a specified route through the control center 7. As an auxiliary walking mechanism for the six-axis robot 61, the linear motion device 62 can move the six-axis robot 61 to different workstations, expanding the working range of the six-axis robot 61 and enabling high-intensity, high-precision, and omnidirectional operations.

[0084] like Figure 7 As shown, in this embodiment, the oil mist purification device 8 includes a purification chamber 81. Inside the purification chamber 81, a mechanical filtration mechanism, an electrostatic adsorption mechanism, and an activated carbon adsorption mechanism are sequentially arranged to achieve mechanical filtration, electrostatic adsorption, and activated carbon adsorption functions, respectively. An air inlet and an exhaust outlet are provided on the outside of the purification chamber 81. The air inlet is connected to a collection hood 82 via a pipe, and the collection hood 82 is installed inside the cleaning chamber 3. The exhaust outlet is connected to a smoke exhaust pipe 84, which is equipped with an exhaust fan 83, and a rain cap 85 is provided at the end of the smoke exhaust pipe 84.

[0085] Mechanical filtration mechanism: This mechanism provides preliminary treatment of oil mist through mechanical filtration. The equipment contains a filter screen or filter element. When air containing oil mist enters the equipment, larger oil droplets and impurities are intercepted by the filter screen, adhering to it and thus separating some of the oil mist from the air. This mechanical filtration method effectively removes large oil mist particles, protecting subsequent purification components.

[0086] Electrostatic Adsorption Mechanism: After mechanical filtration, air enters the electrostatic adsorption area. In this area, the device generates a strong electric field through high-voltage electrodes, causing oil mist particles to become charged. Under the influence of the electric field, the charged oil mist particles are adsorbed onto a collection plate with the opposite charge. Electrostatic adsorption technology can efficiently capture tiny oil mist particles, resulting in a significant purification effect and greatly reducing the concentration of oil mist in the air.

[0087] Activated carbon adsorption mechanism: After electrostatic adsorption, the air may still retain some odors and a small amount of oil mist molecules. At this point, the air passes through the activated carbon adsorption layer. Activated carbon has a huge specific surface area and abundant microporous structure, giving it a strong adsorption capacity. It can adsorb residual oil mist molecules and odor substances in the air, further purifying the air and ensuring that the exhaust air meets environmental standards, reducing environmental pollution.

[0088] In this embodiment, the collection hood 82 is installed inside the cleaning chamber 3, which has an air supply device to form circulating air, ensuring that the oil mist entering the equipment can fully pass through each purification stage, thereby improving purification efficiency. Simultaneously, the air supply device can adjust the airflow and velocity as needed to adapt to different cleaning conditions and oil mist concentrations.

[0089] Compared with the prior art, the present invention has the following advantages:

[0090] (1) Dry ice cleaning technology is used to clean the oil stains on the surface of locomotive parts by using the high-speed airflow of granular dry ice and compressed air.

[0091] (2) The pellet forming machine 22 can be set to the size of the granular dry ice as needed, and can grind three particle sizes of coarse, fine and powder according to the cleaning requirements. The collection device 23 is designed with an independent ice outlet, which can be used for other operations, realizing the function of one machine for multiple purposes.

[0092] (3) The mobile robot 6 and the tilting frame 42 work together to achieve automated cleaning of locomotive parts.

[0093] (4) The oil mist generated during cleaning operations is collected and filtered simultaneously by the oil mist purification device 8 to ensure a clean and tidy working environment in the cleaning room 3, and the exhaust gas is treated to meet the national industrial emission standards.

[0094] In this description of the utility model, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. They can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model. Furthermore, the specific features and structures described in the embodiments are included in at least one implementation method. Those skilled in the art can combine features from different implementation methods without contradiction. The scope of protection of this utility model is not limited to the specific implementation methods described above. Based on the basic technical concept of this utility model, implementation methods that can be conceived by those skilled in the art without creative effort are all within the scope of protection of this utility model.

Claims

1. A waterless cleaning system for locomotive parts, characterized in that, include: Cleaning room (3) is used to provide space for cleaning operations; A flipping device (4) is installed in the cleaning room (3) to fix and flip the locomotive parts to be cleaned; Dry ice making device (2), used to convert liquid carbon dioxide into granular dry ice; Dry ice spraying device (5) is used to mix granular dry ice and compressed air and spray it onto the locomotive parts to be cleaned. A mobile robot (6) is used to hold and move the dry ice spraying device (5) so that the dry ice spraying device (5) can clean the locomotive parts from multiple angles. as well as The oil mist purification device (8) is used to purify the exhaust gas from the cleaning room (3).

2. The waterless cleaning system for locomotive parts according to claim 1, characterized in that, The dry ice making device (2) includes a dry ice making box (21), a pellet forming machine (22), and a collection device (23). The dry ice making box (21) is connected to a carbon dioxide storage tank (1) through a carbon dioxide delivery pipe. A throttle valve (24) is provided at one end of the carbon dioxide delivery pipe near the dry ice making box (21). The throttle valve (24) is used to depressurize the liquid carbon dioxide, so that a part of the liquid carbon dioxide absorbs heat and vaporizes in the dry ice making box (21), and another part of the liquid carbon dioxide is cooled and solidified into block dry ice in the dry ice making box (21). The pellet forming machine (22) is used to crush the block dry ice and obtain granular dry ice. The collection device (23) is used to collect the granular dry ice.

3. The waterless cleaning system for locomotive parts according to claim 2, characterized in that, The pellet forming machine (22) includes a hydraulic device, a compression cylinder and a crushing mechanism. The hydraulic device is connected to the compression cylinder, and the movable end of the compression cylinder is connected to the crushing mechanism. The crushing mechanism extends into the dry ice making box (21) to crush the block dry ice. The crushing mechanism includes a punch head, which is connected to the movable end of the compression cylinder. The compression cylinder is used to drive the punch head to reciprocate to press the block dry ice into pellet dry ice.

4. The waterless cleaning system for locomotive parts according to claim 1, characterized in that, The clean room (3) is equipped with a ventilation device (31), a lighting device, a warning device and a carbon dioxide concentration detection device.

5. The waterless cleaning system for locomotive parts according to claim 1, characterized in that, The flipping device (4) includes a flipping seat (41), a flipping frame (42), and a rotation drive device. The flipping frame (42) is rotatably mounted on the flipping seat (41) and is used to fix the locomotive parts to be cleaned. The rotation drive device is used to drive the flipping frame (42) to rotate on the flipping seat (41).

6. The waterless cleaning system for locomotive parts according to claim 5, characterized in that, The flipping frame (42) includes a first flipping ring, a second flipping ring, and a support frame. The first flipping ring and the second flipping ring are rotatably engaged with the flipping seat (41). The two ends of the support frame are respectively connected to the first flipping ring and the second flipping ring. The support frame is provided with a positioning device and a clamping device. The positioning device is used to position the locomotive parts to be cleaned, and the clamping device is used to clamp and fix the locomotive parts to be cleaned.

7. The waterless cleaning system for locomotive parts according to claim 1, characterized in that, The dry ice spraying device (5) includes a dry ice spray gun (51) and a feeding mechanism (52). The dry ice spray gun (51) is mounted on a mobile robot (6). The output end of the feeding mechanism (52) is connected to the dry ice spray gun (51). One input end of the feeding mechanism (52) is connected to the dry ice making device (2). The other input end of the feeding mechanism (52) is connected to a compressed air input pipe.

8. The waterless cleaning system for locomotive parts according to claim 1, characterized in that, The mobile robot (6) includes a six-axis robot (61), a linear motion device (62), and a spray gun clamp (63). The six-axis robot (61) is mounted on the linear motion device (62), which drives the six-axis robot (61) to move along the length of the flipping device (4). The spray gun clamp (63) is mounted on the six-axis robot (61) and is used to clamp the dry ice spraying device (5).

9. The waterless cleaning system for locomotive parts according to claim 1, characterized in that, The oil mist purification device (8) includes a purification box (81), inside which a mechanical filtration mechanism, an electrostatic adsorption mechanism and an activated carbon adsorption mechanism are arranged in sequence. An air inlet and an exhaust outlet are provided on the outside of the purification box (81). The air inlet is connected to a collection hood (82) through a pipe. The collection hood (82) is set inside the cleaning room (3).

10. The waterless cleaning system for locomotive parts according to claim 9, characterized in that, The exhaust port is connected to a smoke exhaust pipe (84), the smoke exhaust pipe (84) is equipped with a ventilation device (83), and the end of the smoke exhaust pipe (84) is equipped with a rain cap (85).

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