Shot blasting machine for machining engine crankshaft

Abstract

The shot blasting machine for machining the engine crankshaft comprises a box body, a supporting frame, a lifting hook device and a vibration frame, the supporting frame is arranged on one side of the box body, a sliding rail is connected to the lower portion of the supporting frame, the outer surface of the sliding rail is connected with the lifting hook device, box doors are arranged on the two sides of the box body, and the vibration frame is arranged on the box body. Sand blasting openings are formed in the top and one side of the inner wall of an inner cavity of the box body, an inclined plate is arranged in the center of the interior of the box body, a vibration frame is arranged below the inclined plate, damping devices are connected to the left side and the right side of the vibration frame correspondingly, a polarization motor is connected to one side of the bottom of the vibration frame, and a dust collection box is arranged below the vibration frame. A circular hanging ring capable of hanging a plurality of groups of crankshafts to rotate is adopted to drive the crankshafts to enter a box body for processing, sand blasting ports are formed in the top and one side of the inner wall to prevent the sand blasting ports from being influenced during use, and a lower vibration frame is used for damping through the combined action of a rubber block and a spring, so that noise is reduced, and vibration of a machine is vibrated and removed.

Description

Technical Field

[0001] The utility model relates to the technical field of shot blasting machines, in particular to a shot blasting machine for processing engine crankshafts. Background Art

[0002] The shot blasting machine is an advanced surface treatment equipment that uses a high-speed rotating impeller to throw abrasives onto the workpiece surface to achieve cleaning and strengthening. In the current processing of engine crankshafts, the use of a rotary shot blasting machine to perform rough processing on the crankshaft surface is a necessary part, which can significantly improve the fatigue strength of the crankshaft.

[0003] According to the patent number CN108466180A, a hook-type shot blasting machine includes an upper frame, a hoisting rotating device, a hook, a shot blasting chamber, a shot hole, a sand blasting port, an oscillator, a sand and shot separation net and a chamber door. The upper frame is arranged above the shot blasting chamber, the hoisting rotating device is arranged on the upper frame, one end of the hook is arranged on the hoisting rotating device, and the other end extends into the shot blasting chamber, the shot hole is arranged in the shot blasting chamber, a plurality of sand blasting ports are symmetrically arranged on the two side walls of the shot blasting chamber, the sand and shot separation net is arranged at the bottom of the shot blasting chamber, the oscillator is arranged at the bottom of the shot blasting chamber, and matches the sand and shot separation net, and the chamber door is arranged on the shot blasting chamber. The hook-type shot blasting machine of the patent can realize rapid separation of sand and shot through the additional oscillator and sand and shot separation net, which is convenient for the recycling and reuse of sand and shot.

[0004] However, the lack of effective shock absorption method in the oscillator during use of the above device will cause severe vibration of the machine and reduce its service life. At the same time, the symmetrical arrangement of the sandblasting ports will spray sand to the opposite sandblasting ports to damage them. Therefore, in view of this, research and improvement are conducted on the existing structure and deficiencies, and a shot blasting machine for processing engine crankshafts is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a shot blasting machine for processing engine crankshafts, so as to solve the problems proposed in the above-mentioned background technology that the above-mentioned hook-type shot blasting machine lacks effective shock absorption during use, causing the vibration of the machine to seriously affect the service life, and at the same time, the sand blasting port design is unreasonable, and the box door needs to be manually opened by the staff, affecting the efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shot blasting machine for processing engine crankshafts, comprising a box body, a support frame, a hook device and a vibration frame, characterized in that: a support frame is arranged on one side of the box body, a slide rail is connected to the bottom of the support frame, and a hook device is connected to the outer surface of the slide rail, box doors are arranged on both sides of the box body, one side of the box door is connected to a driving device, sand blasting ports are arranged on the top of the inner cavity and one side of the inner wall of the box body, an inclined plate is arranged at the inner center of the box body, a vibration frame is arranged below the inclined plate, a filter is arranged at the inner center of the vibration frame, shock absorbing devices are connected to the left and right sides of the vibration frame, a polarization motor is connected to the bottom side of the vibration frame, a dust collecting box is arranged below the vibration frame, a negative pressure fan is connected to one side of the dust collecting box, and a conveying pipe is connected to one side of the negative pressure fan.

[0007] Furthermore, the center of the support frame is erected on the ground through a column, and a slide groove is provided on the outer surface of the slide rail. The slide rail passes through the top of the inner cavity of the box body under the support of the support frame.

[0008] Furthermore, the hook device is provided with two groups, and the hook device includes a sliding plate, a hanging rod, a motor and a circular hanging ring. The top of the sliding plate is connected to the slide rail through the sliding groove, the bottom of the sliding plate is connected to the hanging rod, one side of the hanging rod is connected to a rotating shaft, one side of the rotating shaft is connected to a motor, the outer surface of the rotating shaft is provided with a circular hanging ring, the bottom of the circular hanging ring is connected to a hook, and the hooks are provided in several groups and are evenly arranged along the bottom of the circular hanging ring.

[0009] Furthermore, sealing rings are arranged around the inner surface of the box door, rotating rods are arranged on both sides of the box door, a transmission belt is connected to the top of the rotating rod, and a driving device is connected to one side of the transmission belt.

[0010] Furthermore, the driving device includes a driving motor and a driving gear, one side of the transmission belt is connected to the driving gear, and the driving gear is connected to the driving motor.

[0011] Furthermore, the sandblasting ports are provided in several groups, the sandblasting ports located at the top of the inner wall of the box body are evenly arranged in the horizontal direction along the top of the inner wall of the box body, and the sandblasting ports located on one side of the inner wall of the box body are evenly arranged in the vertical direction along one side of the inner wall of the box body.

[0012] Furthermore, the shock absorbing device includes a rubber block, a support rod and a spring. Both ends of the support rod are connected to the rubber block, and the outer surface of the support rod is provided with a spring.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the shot blasting machine for processing engine crankshafts adopts a circular hanging ring that can hang multiple groups of crankshafts to drive the crankshafts into the box for processing, the sandblasting ports are arranged on the top and one side of the inner wall to prevent the sandblasting ports from being affected during use, and the vibration frame below is damped by the combined action of rubber blocks and springs to reduce noise and vibration, thereby eliminating the vibration of the machine. The specific contents are as follows:

[0014] A support frame is provided on one side of the box body, and a slide rail is connected to the bottom of the support frame, and a hook device is connected through the slide rail. The upper end of the hook device is connected to the slide rail, and the lower end of the hook device is hoisted with the crankshaft, and the opening of the box door is controlled by the driving device to enter the shot blasting machine. This automated processing can significantly improve efficiency and reduce labor costs. A circular lifting ring is provided on the lower side of the hook device through a rotating shaft, and several groups of hooks are provided at the bottom of the lifting ring, so that multiple groups of crankshafts can be lifted at the same time, thereby enhancing work efficiency. At the same time, the circular lifting ring can rotate, and cooperate with the sandblasting ports on the top and one side of the shot blasting machine so that the crankshaft can be evenly projected with abrasives in the shot blasting machine, thereby ensuring the uniformity of surface treatment. This is crucial to improving the fatigue strength and wear resistance of the crankshaft. The sand ejected from the sandblasting port will fall into the vibration frame after being adjusted in direction by the oblique plate below. There is a filter at the center of the vibration frame, which can filter out impurities in the sand and make it fall into the dust collection box below. It is then transported back to the sandblasting port for secondary utilization through the negative pressure fan, reducing material costs and helping to protect the environment. A shock absorbing device is provided at the connection between the vibration frame and the box body. Through the joint action of rubber blocks and springs, it can effectively reduce the vibration force in different directions brought to the box body by the vibration frame during operation, protect the machine, extend its service life, and at the same time reduce the noise generated by machine vibration during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a shot blasting machine for processing an engine crankshaft according to the utility model;

[0016] Figure 2 This is a schematic diagram of the side structure of a shot blasting machine for processing an engine crankshaft according to the utility model;

[0017] Figure 3 This is a schematic structural diagram of a hook device for a shot blasting machine for machining an engine crankshaft according to the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of a shot blasting machine driving device for processing an engine crankshaft according to the utility model;

[0019] Figure 5 The utility model is a schematic diagram of a shot blasting machine for processing an engine crankshaft from a top view.

[0020] In the figure: 1. box body; 2. support frame; 3. slide rail; 4. hook device; 5. box door; 6. drive device; 7. sandblasting port; 8. inclined plate; 9. vibration frame; 10. filter screen; 11. shock absorption device; 12. polarization motor; 13. dust collecting box; 14. negative pressure fan; 15. conveying pipe; 16. slide groove; 17. sliding plate; 18. suspension rod; 19. motor; 20. rotating shaft; 21. round lifting ring; 22. hook; 23. sealing ring; 24. rotating rod; 25. driving motor; 26. driving gear; 27. transmission belt; 28. rubber block; 29. ​​supporting rod; 30. spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 - Figure 5 The utility model provides a technical solution: a shot blasting machine for processing an engine crankshaft, comprising a box body 1, a support frame 2, a hook device 4 and a vibration frame 9. The box body 1 is a closed box body made of metal material, and box doors 5 are opened on both sides. The box door 5 is a door made of metal material, which plays a sealing role. A sealing ring 23 is arranged around the inner surface of the box door 5. The sealing ring 23 is made of rubber material and can fill the gap after the box door 5 is closed to prevent the sand from leaking out and polluting the environment when the sand blasting port sprays sand. Rotating rods 24 are arranged on both sides of the box door 5. The rotating rods 24 drive the box door 5 to rotate. The top of the rotating rod 24 is connected with a transmission belt 27, and the transmission belt 27 is a soft The driving device 6 is made of a flexible material and serves to connect the rotating rod 24 and the driving device 6. One side of the transmission belt 27 is connected to the driving device 6. The driving device 6 is a metal box body arranged on both sides of the top of the box body 1 to prevent dust from falling on the internal driving gear 26 and other parts and affecting the use. The driving device 6 includes a driving motor 25 and a driving gear 26. The side where the transmission belt 27 enters the driving device 6 is connected to the driving gear 26. The driving gear 26 is connected to the driving motor 25. The driving motor 25 is a small motor and is located inside the driving device 6 to provide power for the opening and closing of the box door 5. Four groups of driving motors 25 and driving gears 26 are provided to control the opening and closing of the four box doors 5.

[0023] A support frame 2 is provided on one side of the box body 1. The support frame 2 is made of metal material. A metal column at the center ensures its stability during use. A circular support frame is provided on the top of the column to provide support for the slide rail 3. The slide rail 3 is connected to the bottom of the support frame 2. The slide rail 3 is a track made of metal material. A slide groove 16 is provided on the outer surface of the slide rail 3. The slide groove 16 is a left-right symmetrical sliding groove, which can enable the hook device 4 to connect and slide using a sliding plate 17 and play a connecting role at the same time. The slide rail 3 passes through the top of the inner cavity of the box body 1 under the support of the support frame 2, so that the hook device 4 can enter the box body 1 without affecting the overall sealing performance. The outer surface of the slide rail 3 is connected to the hook device 4. The hook device 4 is provided with two groups. When one group is working in the box body 1, the other group can remove the processed crankshaft and then mount a new crankshaft to speed up work efficiency. The hook device 4 includes a sliding plate 17, a suspension rod 18, a motor 19 and a circular The lifting ring 21 and the sliding plate 17 are metal buckles that can be stuck in the slide groove 16 of the slide rail 3 and can move along the slide groove 16 under the control of the machine. The bottom of the sliding plate 17 is connected with a suspension rod 18, and the suspension rod 18 provides structural strength to the entire hook device 4. A rotating shaft 20 is connected to one side of the suspension rod 18, and a motor 19 is connected to one side of the rotating shaft 20. The motor 19 enables the rotating shaft 20 to rotate at the bottom of the suspension rod 18. A circular lifting ring 21 is provided on the outer surface of the rotating shaft 20. The circular lifting ring 21 is a circular structure made of metal material and has excellent bearing capacity. At the same time, a lifting hook 22 is connected to the bottom of the circular lifting ring 21. The lifting hook 22 can pass through the hole of the crankshaft to firmly mount the crankshaft on the bottom of the circular lifting ring 21. The lifting hook 22 is provided with several groups and is evenly arranged along the bottom of the circular lifting ring 21. The circular lifting ring 21 can drive the crankshaft to rotate, so that the hoisted crankshaft can be evenly processed on the inner surface of the shot blasting machine.

[0024] The inner cavity top and one side of the inner wall of the box body 1 are provided with sandblasting ports 7, which are nozzles for spraying fine sand. Several groups of sandblasting ports 7 are provided. The sandblasting ports 7 located at the top of the inner wall of the box body 1 are evenly arranged in the horizontal direction along the top of the inner wall of the box body 1, and the sandblasting ports 7 located on one side of the inner wall of the box body 1 are evenly arranged in the vertical direction along one side of the inner wall of the box body 1. The crankshaft hoisted on the hook device 4 entering the box body 1 is processed by projecting sand particles through the sandblasting ports 7 on the top and one side, so as to prevent the risk of blockage and damage caused by the sandblasting ports 7 on both sides. At the same time, the hook device 4 can rotate. It can make the surface processing of the crankshaft more uniform. An inclined plate 8 is arranged at the inner center of the box body 1. A through hole is opened in the middle of the inclined plate 8 to allow the ejected sand to enter the vibration frame 9 below in a standardized manner. A vibration frame 9 is arranged below the inclined plate 8. The vibration frame 9 is a frame made of metal material with a smooth surface and is not easy to retain sand. A filter screen 10 is arranged at the inner center of the vibration frame 9. The filter screen 10 can filter out impurities in the collected sand and play a filtering role. Shock absorbers 11 are connected to the left and right sides of the vibration frame 9. The shock absorbing device 11 includes a rubber block 28, a support rod 29 and a spring 30. The support rod 29 is made of metal material, and is formed by a thick and a thin structure sleeved at the top and bottom. Under the action of the spring 30, the resonance generated by the vibration frame 9 during operation can be eliminated. Both ends of the support rod 29 are connected with rubber blocks 28. The rubber blocks 28 are block structures made of soft rubber materials and are located at both ends of the support rod 29. Under the combined action of the spring 30, the resonance generated in different directions can be eliminated. The outer surface of the support rod 29 is provided with a spring 30. The bottom side of the vibration frame 9 is connected to the rubber block 28. A polarization motor 12 is connected, and the polarization motor 12 provides vibration power for the vibration frame 9. A dust box 13 is arranged below the vibration frame 9. The dust box 13 is a box made of metal material, and the inner wall surface is smooth and coated with paint to prevent static electricity in the sand from adsorbing the sand on the inner wall of the dust box 13. A negative pressure fan 14 is connected to one side of the dust box 13, and a conveying pipe 15 is connected to one side of the negative pressure fan 14. The filtered sand is then conveyed back to the sand blasting port 7 through the negative pressure fan 14, so that the sand can be recycled, reducing material consumption and protecting the environment at the same time.

[0025] Working principle: When using a shot blasting machine for processing an engine crankshaft, the engine crankshaft is hung on the hook 22 of the hook device 4. Multiple groups of crankshafts can be hung at the same time to enhance work efficiency. Then the machine is started, and the hook device 4 is moved forward through the upper slide rail 3. The machine controls the box door 5 to open through the driving device 6, so that the lower circular hanging ring 21 of the hook device 4 and the crankshaft enter the box body 1, and then the box door 5 is closed. Through the joint action of the sealing ring 23 provided on the box door 5, a sealed working space is formed to prevent dust raised during the work process from polluting the environment and causing harm to the workers. After entering the box body 1, the circular hanging ring 21 starts to rotate driven by the rotating shaft 20. Since the hanging ring can rotate, the crankshaft can be evenly projected by the abrasive in the shot blasting machine, ensuring the uniformity of the surface treatment. This is very important for improving the fatigue strength and wear resistance of the crankshaft. At the same time, the sand blasting ports 7 on the top and one side of the inner wall of the box body 1 begin to project sand and impurities toward the crankshaft. The projected sand and impurities fall into the vibration frame 9 below. The vibration frame 9 starts to vibrate through the polarization motor 12, allowing the sand to pass through the filter screen 10, leaving the impurities inside the vibration frame 9. This method of filtering sand can quickly separate large-particle impurities and broken sand in the waste sand, ensuring that the quality of the recovered sand is relatively uniform, which is conducive to reuse. The waste sand is processed by physical screening, which reduces the emission of dust and pollutants and is more environmentally friendly. At the same time, the consumption of abrasive is reduced, which meets the requirements of sustainable development. The filtered sand enters the dust collecting box 13 below, and is sent to the sandblasting port 7 again through the negative pressure fan 14 and the conveying pipe 15 for operation. Shock absorbing devices 11 are arranged on both sides of the vibration frame 9. The vibration generated by the vibration frame 9 during operation is reduced by the joint action of the rubber block 28 and the spring 30, thereby extending the service life of the machine and reducing the working noise. After the processing is completed, the box door 5 on the other side is opened by the driving device 6, and the hook device 4 also stops rotating and moves out of the box body 1 through the slide rail 3. At this time, another set of hook devices 4 on the slide rail 3 also hangs a new batch of crankshafts and sends them into the machine to repeat the operation.

Claims

1. A shot blasting machine for machining an engine crankshaft, comprising a housing (1), a support frame (2), a hook device (4) and a vibration frame (9), characterized in that: A support frame (2) is provided on one side of the box body (1), a slide rail (3) is connected below the support frame (2), a hook device (4) is connected to the outer surface of the slide rail (3), box doors (5) are provided on both sides of the box body (1), a driving device (6) is connected to one side of the box door (5), a sandblasting port (7) is provided on the top of the inner cavity and one side of the inner wall of the box body (1), an inclined plate (8) is provided at the inner center of the box body (1), and the inclined plate (8) ) is provided below the vibration frame (9), a filter screen (10) is provided at the inner center of the vibration frame (9), the left and right sides of the vibration frame (9) are connected to shock absorbing devices (11), a polarizing motor (12) is connected to one side of the bottom of the vibration frame (9), a dust collecting box (13) is provided below the vibration frame (9), a negative pressure fan (14) is connected to one side of the dust collecting box (13), and a conveying pipe (15) is connected to one side of the negative pressure fan (14).

2. A shot blasting machine for machining an engine crankshaft according to claim 1, characterized in that: The center of the support frame (2) is supported on the ground by a column, and a slide groove (16) is provided on the outer surface of the slide rail (3). The slide rail (3) passes through the top of the inner cavity of the box body (1) under the support of the support frame (2).

3. A shot blasting machine for machining an engine crankshaft according to claim 2, characterized in that: The hook device (4) is provided with two groups, and the hook device (4) comprises a sliding plate (17), a suspension rod (18), a motor (19) and a circular suspension ring (21). The top of the sliding plate (17) is connected to the slide rail (3) through the slide groove (16), the bottom of the sliding plate (17) is connected to the suspension rod (18), one side of the suspension rod (18) is connected to a rotating shaft (20), one side of the rotating shaft (20) is connected to the motor (19), the outer surface of the rotating shaft (20) is provided with a circular suspension ring (21), the bottom of the circular suspension ring (21) is connected to a suspension hook (22), and the suspension hook (22) is provided in a plurality of groups and is evenly arranged along the bottom of the circular suspension ring (21).

4. A shot blasting machine for machining an engine crankshaft according to claim 1, characterized in that: The inner surface of the box door (5) is provided with a sealing ring (23) around it, and rotating rods (24) are provided on both sides of the box door (5). The top of the rotating rod (24) is connected to a transmission belt (27), and one side of the transmission belt (27) is connected to a driving device (6).

5. A shot blasting machine for machining an engine crankshaft according to claim 4, characterized in that: The driving device (6) comprises a driving motor (25) and a driving gear (26); one side of the transmission belt (27) is connected to the driving gear (26); and the driving gear (26) is connected to the driving motor (25).

6. A shot blasting machine for machining an engine crankshaft according to claim 1, characterized in that: The sandblasting ports (7) are provided in a plurality of groups. The sandblasting ports (7) located at the top of the inner wall of the box body (1) are evenly arranged in the horizontal direction along the top of the inner wall of the box body (1), and the sandblasting ports (7) located at one side of the inner wall of the box body (1) are evenly arranged in the vertical direction along one side of the inner wall of the box body (1).

7. A shot blasting machine for machining an engine crankshaft according to claim 1, characterized in that: The shock absorbing device (11) comprises a rubber block (28), a support rod (29) and a spring (30); both ends of the support rod (29) are connected to the rubber block (28); and the outer surface of the support rod (29) is provided with a spring (30).

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