Crawler-type shot blasting machine for turbine shell casting parts
By using a servo motor to drive a tracked shot blasting machine, the turbine housing castings are thoroughly cleaned by steel shot during movement, solving the problem of increased time costs caused by position movement in existing technologies, improving cleaning efficiency and saving manual operation time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-03-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing technology, when the turbine housing casting is moved by the tilting mechanism of the tracked shot blasting machine, the shot blaster cannot operate, resulting in increased time costs.
A servo motor drives a belt to rotate the driven wheel, and the track shaft drives the track to move. During the movement, the turbine housing casting is thoroughly cleaned by steel shot, preventing the shot blaster from stopping.
It saves cleaning time for turbine housing castings, reduces the phenomenon of incomplete steel shot cleaning, and lowers the time cost of manual turning and sealing operations.
Smart Images
Figure CN121649907A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of surface cleaning technology for metal castings, and specifically to a tracked shot blasting machine for turbine housing castings. Background Technology
[0002] Turbine housing castings are made through casting processes such as resin sand casting, coated sand shell casting, and investment casting. They are core load-bearing components for the hot end of turbine power units such as turbochargers, gas turbines, and aero engines. They provide a closed working cavity for the turbine impeller and integrate a spiral volute flow channel, flange connection structure, and nozzle ring mounting area. The core function is to guide the high-temperature airflow and convert pressure energy into kinetic energy, while also supporting and fixing the turbine rotating components.
[0003] In the prior art, turbine housing castings often have burrs on their surface. Turbine housing castings are generally deburred by a tracked shot blasting machine. The turbine housing castings are placed on the track of the tracked shot blasting machine by a feeding device. The shot blaster on the tracked shot blasting machine fires steel shot in a short time. The steel shot impacts the surface of the turbine housing castings and removes the burrs on the surface of the turbine housing castings.
[0004] However, when turbine housing castings are placed on tracks, they are generally in a fixed position. In the prior art, tracked shot blasting machines use a flipping mechanism to change the position of turbine housing castings on tracks, so that the turbine housing castings can be thoroughly cleaned by steel shot. However, this operation requires the shot blaster to stop running. Therefore, the displacement of turbine housing castings through the flipping mechanism increases the time cost. Summary of the Invention
[0005] The purpose of this invention is to provide a tracked shot blasting machine for turbine housing castings, in order to solve the technical problem in the prior art where the shot blaster cannot operate when the turbine housing casting is moved by the flipping mechanism, resulting in increased time costs.
[0006] The technical problem to be solved by this invention can be achieved through the following technical solution: A tracked shot blasting machine for turbine housing castings includes: The shot blasting machine body has several shot blasters fixedly connected to its inner wall and a rotator fixedly connected to its outer wall. A rotating shaft is fixedly connected to the side end of the rotator and passes through the side end of the shot blasting machine body. A ventilation frame is fixedly connected to the side end of the rotating shaft through a support assembly. Diverter plates are fixedly connected to the upper and lower ends of the ventilation frame. A connecting frame, the side end of which is fixedly connected to a ventilation frame, and a number of track shafts are equidistantly installed on the connecting frame along its length. The side end of each track shaft is connected to a belt through a driven wheel. A track is sleeved and connected to the surface of the track shaft, and a number of recovery holes are opened through the track. A connecting shaft, one end of which is fixedly connected to the splitter plate, and the other end of which is rotatably connected to the inner wall of the track shaft. The connecting shaft passes through the inside of the driven wheel and is rotatably connected to the inner wall of the driven wheel.
[0007] As a further aspect of the present invention: a support frame is fixedly connected to the top of the shot blasting machine body, a crane is fixedly connected to the top of the support frame, and a feeding hopper is provided on the side of the support frame.
[0008] As a further aspect of the present invention: a cylinder is installed on the top of the support frame, and a sealing door is fixedly connected to the bottom of the cylinder via a controller. The sealing door is used to block the feed inlet of the shot blasting machine body.
[0009] As a further aspect of the present invention: the controller is mounted with a rotating seat via a control component, the bottom of the rotating seat is provided with an arc-shaped retaining groove, the rotating seat is rotatably connected to the bottom end of the control component, a retaining component is rotatably connected to the inner wall of the retaining groove, and a pressure plate is fixedly connected to the bottom end of the retaining component via a connecting seat.
[0010] As a further aspect of the present invention: the bottom end of the pressure plate is fixedly connected to a connecting pad with a sponge shape.
[0011] As a further aspect of the present invention: the support assembly includes: a support base, a support rod, and a fixing frame. The support base is fixedly connected to the side end of the rotating shaft. The support rod is provided in two sets, and the two sets of support rods are respectively fixedly connected to both ends of the support base. One set of support rods is fixedly connected to the ventilation frame, and the other set of support rods is fixedly connected to the fixing frame. The upper and lower ends of the fixing frame are respectively fixedly connected to the connecting frame.
[0012] As a further embodiment of the present invention: the track shaft is provided with a plurality of spray holes that communicate with the inner cavity at equal intervals along the axis, the flow divider is provided with a flow divider groove inside, the flow divider groove is connected to the inner cavity of the track shaft through the inner cavity of the connecting shaft, and the inner cavity of the vent frame is connected to the inner cavity of the flow divider groove.
[0013] As a further aspect of the present invention: a control head is installed on the inner wall of the diversion channel, and the side end of the control head is connected to the inner cavity of the ventilation frame.
[0014] As a further aspect of the present invention: the horizontal height of the connecting frame is higher than the horizontal height of the track.
[0015] As a further aspect of the present invention: the connecting shaft has a rounded corner at the edge away from the driven wheel, and the side end of the connecting shaft is rotatably connected to the inner wall of the track shaft.
[0016] The beneficial effects of this invention are: 1. A servo motor drives a belt to move, which in turn drives a driven pulley to rotate. The servo motor can be mounted on a distributor plate. The driven pulley drives a track shaft to rotate, which in turn drives a track to move. The track then moves the turbine housing casting. The moving turbine housing casting changes its original position, thus ensuring that the turbine housing casting is thoroughly cleaned with steel shot during the movement. This avoids the phenomenon of steel shot not being removed from the turbine housing casting and prevents the shot blasting machine from having to stop operating when the turbine housing casting moves, saving time.
[0017] 2. When the servo motor drives the driven wheel to rotate, the servo motor is pre-set to rotate clockwise and counterclockwise in sequence within the time interval, which can ensure that the turbine housing casting moves back and forth. The lack of this technical feature in this invention will cause the turbine housing casting to move in one direction, which may lead to the risk of falling off the track.
[0018] 3. When the steel shot falls from the recovery hole, the track is in automatic mode. The recovery holes on the track are misaligned between the upper and lower layers. When the steel shot falls from the top layer of the track, it will not fall directly from the next layer. Instead, the steel shot will roll between the two layers of the track. During this rolling process, the steel shot will rub against the track. The plastic pad on the track surface can initially clean the dust and impurities on the surface of the steel shot, reducing the workload of cleaning and recovering the steel shot that falls to the bottom of the shot blasting machine. Attached Figure Description
[0019] The invention will now be further described with reference to the accompanying drawings.
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the main structure of the shot blasting machine of the present invention; Figure 3 For the present invention Figure 2 A cross-sectional view (AA) of the main structure of the shot blasting machine; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point D; Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point E; Figure 6 This is a schematic diagram of the pressure plate structure of the present invention; Figure 7 This is a schematic diagram of the shot blasting device structure of the present invention; Figure 8 This is a schematic diagram of the support component structure of the present invention; Figure 9 This is a top view of the flow divider structure of the present invention; Figure 10 For the present invention Figure 9 Sectional view of the manifold structure (BB); Figure 11 For the present invention Figure 9 CC section view of the manifold structure; Figure 12 This is a schematic diagram of the track structure of the present invention; Figure 13 This is a schematic diagram of the connecting shaft structure of the present invention.
[0021] In the diagram: 1. Shot blasting machine body; 2. Support frame; 3. Cylinder; 4. Crane; 5. Sealing door; 6. Controller; 7. Feed hopper; 8. Control components; 9. Shot blaster; 10. Rotator; 11. Rotating shaft; 12. Rotating seat; 13. Holding groove; 14. Holding component; 15. Connecting seat; 16. Pressure plate; 17. Diverter plate; 18. Diverter groove; 19. Driven wheel; 20. Belt; 21. Connecting shaft; 22. Track shaft; 23. Spray hole; 24. Connecting pad; 25. Connecting frame; 26. Ventilation frame; 27. Support seat; 28. Support rod; 29. Fixing frame; 30. Track; 31. Recovery hole; 32. Control head. Detailed Implementation
[0022] 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.
[0023] like Figure 1 - Figure 13As shown, a tracked shot blasting machine for turbine housing castings includes: a shot blasting machine body 1, a connecting frame 25, and a connecting shaft 21. A plurality of shot blasters 9 are fixedly connected to the inner wall of the shot blasting machine body 1. A rotator 10 is fixedly connected to the outer wall of the shot blasting machine body 1. A rotating shaft 11 is fixedly connected to the side end of the rotator 10, and the rotating shaft 11 passes through the side end of the shot blasting machine body 1. A ventilator 26 is fixedly connected to the side end of the rotating shaft 11 via a support assembly. Diverter plates 17 are fixedly connected to the upper and lower ends of the ventilator 26. The side end of the connecting frame 25 is fixedly connected to the ventilator 26. A plurality of track shafts 22 are equidistantly installed on the connecting frame 25 along its length. The side end of each track shaft 22 is sleeved and connected to a belt 20 via a driven wheel 19. A track 30 is sleeved and connected to the surface of the track shaft 22, and the track 30 has a plurality of recovery holes 31 extending through it. One end of the connecting shaft 21 is fixedly connected to the diverter plate 17, and the other end is rotatably connected to the inner wall of the track shaft 22. The connecting shaft 21 passes through... The turbine housing casting is placed evenly on the track 30 by passing through the driven wheel 19 and rotating around its inner wall. When the shot blaster 9 sprays steel shot onto the turbine housing casting, to prevent the casting from being in a fixed position and not being adequately cleaned, a servo motor can drive the belt 20 to move. The belt 20 drives the driven wheel 19 to rotate. The servo motor can be mounted on the splitter plate 17. The driven wheel 19 drives the track shaft 22 to rotate, which in turn drives the track 30 to move. The track 30 then moves the turbine housing casting. The moving turbine housing casting changes its fixed position, thus ensuring that it is adequately cleaned by the steel shot during the movement. This avoids situations where the steel shot cannot be cleaned from the turbine housing casting and prevents the shot blaster 9 from having to stop when the turbine housing casting moves, saving time.
[0024] It should be noted that, in order to ensure that the turbine housing casting can move repeatedly, when the servo motor drives the driven wheel 19 to rotate, the servo motor is pre-set to rotate clockwise and counterclockwise in sequence within the time interval, so as to ensure that the turbine housing casting can move back and forth. The lack of this technical feature in the present invention will cause the turbine housing casting to move in one direction, which may lead to the risk of falling off the track 30.
[0025] When the steel shot comes into contact with the turbine housing casting, it falls onto the surface of the track 30. Then, it is recovered through the recovery hole 31. In existing technology, the steel shot simply falls from the recovery hole 31 to the bottom of the shot blasting machine body 1 for cleaning and recovery. However, in this invention, the track 30 is in an automatic state when the steel shot falls from the recovery hole 31. The recovery holes 31 on the track 30 are misaligned between the upper and lower layers. When the steel shot falls from the top layer of the track 30, it does not fall directly to the next layer. Instead, it rolls between the two layers of the track 30. During this rolling process, the steel shot rubs against the track 30. The plastic pad on the surface of the track 30 can initially clean the dust and impurities on the surface of the steel shot, reducing the workload of cleaning and recovering the steel shot after it falls to the bottom of the shot blasting machine body 1.
[0026] In some specific implementation schemes, a support frame 2 is fixedly connected to the top of the shot blasting machine body 1, and a crane 4 is fixedly connected to the top of the support frame 2. A feeding hopper 7 is provided on the side of the support frame 2, and a cylinder 3 is installed on the top of the support frame 2. A sealing door 5 is fixedly connected to the bottom of the cylinder 3 through a controller 6. The sealing door 5 is used to block the feed port of the shot blasting machine body 1. When the turbine housing casting is fed onto the track 30, the turbine housing casting can be placed in the feeding hopper 7. The crane 4 operates and pulls the feeding hopper 7 by pulling the iron chain. The feeding hopper 7 feeds the turbine housing casting into the shot blasting machine body 1. Compared with manual feeding, the use of this device reduces manual operation and saves time and effort.
[0027] After the turbine housing casting is fed into the shot blasting machine body 1, in order to prevent the steel shot from flying around, the cylinder 3 is activated. The cylinder 3 pushes the controller 6 to move downward. The controller 6, along with the sealing door 5, slides along the edge of the feed inlet of the shot blasting machine body 1, thereby sealing the feed inlet of the shot blasting machine body 1.
[0028] In some specific embodiments, the controller 6 is equipped with a rotating seat 12 via a control component 8. The bottom of the rotating seat 12 has an arc-shaped retaining groove 13. The rotating seat 12 is rotatably connected to the bottom of the control component 8. A retaining component 14 is rotatably connected to the inner wall of the retaining groove 13. A pressure plate 16 is fixedly connected to the bottom of the retaining component 14 via a connecting seat 15. A sponge-shaped connecting pad 24 is fixedly connected to the bottom of the pressure plate 16. In actual operation, the surface of the turbine housing casting that contacts the track 30 cannot be cleaned with steel shot. If manual turning is performed, turning each turbine housing casting individually is time-consuming. Additionally, opening and closing the sealing door 5 also takes time. Therefore, in this invention, after the turbine housing casting has been cleaned with steel shot, the sealing door 5 does not need to be opened. The controller 6 moves the control component 8, which moves the rotating seat 12 downwards. The rotating seat 12 moves downwards via the retaining component 14, which in turn moves the connecting seat 15 downwards. The connecting seat 15 moves downwards with the pressure plate 16. When the pressure plate 16 and the turbine housing casting... When the top of the component is supported, the rotator 10 operates, rotating the rotating shaft 11. The rotating shaft 11 rotates the ventilation frame 26 via the support assembly, and the ventilation frame 26 rotates the connecting frame 25. The connecting frame 25 moves the track 30 via the track shaft 22. The track 30 and the pressure plate 16 flip the turbine housing casting in a clamping manner, with the turbine housing casting at the top. Then, the controller 6 resets the pressure plate 16, and the turbine housing castings fall off one by one. When the turbine housing castings fall onto the surface of the track 30 below, the turbine housing castings have completed the flipping operation. The pressure plate 16 and track 30 designed in this invention can flip all the turbine housing castings simultaneously, and when the turbine housing castings fall onto the surface of the track 30, the collision can shake off the dust and impurities on the surface. Therefore, through the above technical solution, this invention can avoid the manual operation of flipping the turbine housing castings one by one, as well as the operation of opening and closing the sealing door 5, saving time.
[0029] In order to ensure the operation of the above technical solution, when the pressure plate 16 rotates with the track 30, the pressure plate 16 rotates with the connecting seat 15. The connecting seat 15 rotates along the bottom of the control member 8 by the resistance of the retaining member 14 and the inner wall of the retaining groove 13. If the present invention lacks these technical features, then the pressure plate 16 cannot rotate stably.
[0030] When the pressure plate 16 is reset, it automatically flips over due to its own center of gravity. When the pressure plate 16 contacts the surface of the sealing door 5, it resets further until it is in contact with the surface of the sealing door 5. Since the turbine housing casting is irregularly shaped, in order to prevent the turbine housing casting from slipping between the pressure plate 16 and the track 30, when the pressure plate 16 holds the top of the turbine housing casting, the pressure plate 16 holds the top of the turbine housing casting through the connecting pad 24. The shape of the connecting pad 24 can wrap around the top of the turbine housing casting, so that the top of the turbine housing casting can be positioned during the rotation of the turbine housing casting.
[0031] In some specific embodiments, the support assembly includes: a support base 27, a support rod 28, and a fixing frame 29. The support base 27 is fixedly connected to the side end of the rotating shaft 11. There are two sets of support rods 28, which are fixedly connected to both ends of the support base 27, respectively. One set of support rods 28 is fixedly connected to the ventilation frame 26, and the other set of support rods 28 is fixedly connected to the fixing frame 29. The upper and lower ends of the fixing frame 29 are fixedly connected to the connecting frame 25, respectively. In order to enable those skilled in the art to better understand the technical solution of the present invention, when the rotator 10 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the support base 27 to rotate. The support base 27 is located between several sets of shot blasters 9. The support base 27 drives the support rod 28 to rotate. The support rod 28 will not touch the shot blaster 9, and the support rod 28 is located between several shot blasters 9. The support rod 28 will not affect the path of the shot blaster 9 spraying steel shot.
[0032] When the support rod 28 rotates, it drives the fixed frame 29 and the ventilation frame 26 to rotate. The ventilation frame 26 and the fixed frame 29, along with the connecting frame 25, rotate. Through the above technical solution, the turbine housing casting can be rotated.
[0033] In some specific embodiments, the track shaft 22 has several nozzles 23 equidistantly spaced along its axis, communicating with the inner cavity. A flow divider 17 has a flow divider groove 18 inside, which communicates with the inner cavity of the track shaft 22 via the inner cavity of the connecting shaft 21. The inner cavity of the ventilator 26 communicates with the inner cavity of the flow divider groove 18. A control head 32 is installed on the inner wall of the flow divider groove 18, and its side end communicates with the inner cavity of the ventilator 26. When cleaning the turbine housing casting, dust and impurities remain on the surface of the track 30. This dust and impurities affect the cleanliness of the turbine housing casting surface. Furthermore, when steel shot cleans the turbine housing casting surface, the dust and impurities affect the cleaning efficiency. Therefore, in this… In this invention, airflow is transported through the inner cavity of the ventilation frame 26, and then controlled by the control head 32 to be transported into the inner cavity of the diversion groove 18. The airflow then passes through the connecting shaft 21 and enters the inner cavity of the track shaft 22, and is then ejected from the nozzle 23. The ejected airflow cleans the dust and impurities remaining on the surface of the track 30 through the recovery hole 31, and at the same time cleans the surface of the turbine housing casting. The steel shot between the tracks 30 can also be cleaned by the airflow. Impurities and dust settle from between the connecting frame 25 and the shot blasting machine body 1 to the bottom of the shot blasting machine body 1. A device for recovering airflow can be installed on the connecting frame 25. When the airflow moves with dust and impurities, it can recover the dust and impurities.
[0034] In some specific implementations, the horizontal height of the connecting frame 25 is higher than that of the track 30. The height restriction of the connecting frame 25 can prevent steel shot from falling off the track 30 after colliding with the turbine housing casting, thereby increasing the contact time between the turbine housing casting and the steel shot.
[0035] In some specific implementations, the connecting shaft 21 has a rounded corner at the edge away from the driven wheel 19. The side end of the connecting shaft 21 is rotatably connected to the inner wall of the track shaft 22. When the track shaft 22 rotates, the connecting shaft 21 rotates along the inner wall of the track shaft 22. The side end of the connecting shaft 21, by fitting against the inner wall of the track shaft 22, provides a limiting support for the track shaft 22 and the driven wheel 19.
[0036] The foregoing has described several embodiments of the present invention in detail, but these embodiments are not limited thereto and should not be considered as limiting the scope of the invention. All equivalent variations and improvements made within the scope of the claims of this invention should still fall within the patent coverage of this invention.
Claims
1. A tracked shot blasting machine for turbine housing castings, characterized in that, include: The shot blasting machine body (1) has several shot blasters (9) fixedly connected to its inner wall and a rotator (10) fixedly connected to its outer wall. A rotating shaft (11) is fixedly connected to the side end of the rotator (10). The rotating shaft (11) passes through the side end of the shot blasting machine body (1). A ventilation frame (26) is fixedly connected to the side end of the rotating shaft (11) through a support assembly. A diverter plate (17) is fixedly connected to the upper and lower ends of the ventilation frame (26). A connecting frame (25) is fixedly connected to a ventilation frame (26) at its side end. A number of track shafts (22) are equidistantly installed on the connecting frame (25) along its length. The side end of the track shaft (22) is sleeved and connected to a belt (20) through a driven wheel (19). A track (30) is sleeved and connected to the surface of the track shaft (22). A number of recovery holes (31) are opened through the track (30). The connecting shaft (21) is fixedly connected at one end to the diverter plate (17) and rotatably connected at the other end to the inner wall of the track shaft (22). The connecting shaft (21) passes through the inside of the driven wheel (19) and is rotatably connected to the inner wall of the driven wheel (19).
2. The tracked shot blasting machine for turbine housing castings according to claim 1, characterized in that, The shot blasting machine body (1) is fixedly connected to a support frame (2) at the top, and a crane (4) is fixedly connected to the top of the support frame (2). A feeding hopper (7) is provided on the side of the support frame (2).
3. The tracked shot blasting machine for turbine housing castings according to claim 2, characterized in that, A cylinder (3) is installed on the top of the support frame (2), and a sealing door (5) is fixedly connected to the bottom of the cylinder (3) through a controller (6). The sealing door (5) is used to block the feed port of the shot blasting machine body (1).
4. A tracked shot blasting machine for turbine housing castings according to claim 3, characterized in that, The controller (6) is equipped with a rotating seat (12) via a control component (8). The bottom of the rotating seat (12) is provided with an arc-shaped retaining groove (13). The rotating seat (12) is rotatably connected to the bottom of the control component (8). A retaining component (14) is rotatably connected to the inner wall of the retaining groove (13). A pressure plate (16) is fixedly connected to the bottom of the retaining component (14) via a connecting seat (15).
5. A tracked shot blasting machine for turbine housing castings according to claim 4, characterized in that, The bottom end of the pressure plate (16) is fixedly connected to a sponge-shaped connecting pad (24).
6. A tracked shot blasting machine for turbine housing castings according to claim 1, characterized in that, The support assembly includes: a support base (27), a support rod (28), and a fixing frame (29). The support base (27) is fixedly connected to the side end of the rotating shaft (11). There are two sets of support rods (28). The two sets of support rods (28) are fixedly connected to both ends of the support base (27). One set of support rods (28) is fixedly connected to the ventilation frame (26). The other set of support rods (28) is fixedly connected to the fixing frame (29). The upper and lower ends of the fixing frame (29) are fixedly connected to the connecting frame (25).
7. A tracked shot blasting machine for turbine housing castings according to claim 1, characterized in that, The track shaft (22) has several spray holes (23) that communicate with the inner cavity at equal intervals along the axis. The flow divider (17) has a flow divider groove (18) inside. The flow divider groove (18) is connected to the inner cavity of the track shaft (22) through the inner cavity of the connecting shaft (21). The inner cavity of the ventilation frame (26) is connected to the inner cavity of the flow divider groove (18).
8. A tracked shot blasting machine for turbine housing castings according to claim 7, characterized in that, A control head (32) is installed on the inner wall of the diversion channel (18), and the side end of the control head (32) is connected to the inner cavity of the ventilation frame (26).
9. A tracked shot blasting machine for turbine housing castings according to claim 1, characterized in that, The horizontal height of the connecting frame (25) is higher than that of the track (30).
10. A tracked shot blasting machine for turbine housing castings according to claim 1, characterized in that, The connecting shaft (21) has a rounded corner at one end away from the driven wheel (19), and the side end of the connecting shaft (21) is rotatably connected to the inner wall of the track shaft (22).