Shot blasting equipment for surface treatment of half axle gear

Abstract

The utility model relates to the technical field of gear machining, in particular to shot blasting equipment for surface treatment of a half axle gear, which comprises a shot blasting box and a discharge port arranged at the lower end of the shot blasting box, a fixing frame is arranged in the shot blasting box, and a rotating support for placing a gear is arranged at the upper end of the fixing frame. A power device for controlling the rotating bracket to rotate is arranged at the lower end of the fixed frame; a movable frame is arranged above the rotating support and slidably arranged on the inner side of the shot blasting box, a sand blasting pipe is arranged at the lower end of the movable frame and fixedly arranged in the center of the movable frame, and a nozzle is arranged at the lower end of the sand blasting pipe. During cleaning, the power device controls the rotating support to rotate, the lifting mechanism controls the movable frame to ascend and descend, it is guaranteed that the top, the bottom and the side edges of the gear piece can be fully cleaned, and the surface treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to shot peening equipment for surface treatment of half-shaft gears. Background Technology

[0002] The half-shaft gear is a core transmission component of a car differential, responsible for transmitting power to the drive wheels. Because it withstands enormous alternating loads, intense friction, and impacts during operation, it undergoes surface treatment using shot peening equipment. Through processes such as shot peening and carburizing, a hardened layer is formed on the surface, resisting wear and fatigue spalling caused by long-term meshing and extending its service life.

[0003] Shot peening equipment mainly consists of a shot peening chamber, a shot blasting system (shot blaster or air jet nozzle), a shot circulation system (recovery, separation, and lifting device), a dust removal system, and a control system. Some equipment is also equipped with a workpiece conveying mechanism (such as a turntable or conveyor belt). Its core function is to clean, strengthen, or shape the workpiece surface by impacting it with high-speed shot, and it is widely used in the field of metal surface treatment. In partial shot peening equipment, the positions of the workpiece tray and the shot peening nozzle are relatively fixed. Therefore, during the surface treatment process, dead corners (such as the tooth root, bottom, and other hidden areas) are prone to appear on the gear surface, and some areas cannot be effectively impacted by the shot, affecting the uniformity of surface treatment. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a shot peening device for surface treatment of half-shaft gears, thereby overcoming the shortcomings of existing methods.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a shot peening device for surface treatment of half shaft gears, including a shot peening box and a discharge port located at the lower end of the shot peening box, and a fixing frame is provided inside the shot peening box, the fixing frame being fixedly installed inside the shot peening box;

[0006] The upper end of the fixed frame is provided with a rotating bracket for placing gear components. The rotating bracket is rotatably connected to the fixed frame. The lower end of the fixed frame is provided with a power device for controlling the rotation of the rotating bracket.

[0007] A movable frame is provided above the rotating support. The movable frame is slidably set inside the shot peening box. A sandblasting pipe is provided at the lower end of the movable frame. The sandblasting pipe is fixedly set in the center of the movable frame. A nozzle is provided at the lower end of the sandblasting pipe. The nozzle is placed in the center of the rotating support. A lifting mechanism for adjusting the height of the movable frame is provided at the upper end of the shot peening box.

[0008] A further improvement is that an air pump is provided on the outside of the shot peening box, and a guide pipe is connected to the output end of the air pump. The end of the guide pipe away from the air pump passes through the shot peening box and is connected to the sandblasting pipe. The guide pipe is fixedly installed at the upper end of the sandblasting pipe.

[0009] A further improvement is that: a storage tank is provided on the outside of the shot peening box, and a guide pipe is connected to the output end of the storage tank. The end of the guide pipe away from the storage tank passes through the shot peening box and is connected to the sandblasting pipe. The guide pipe is fixedly installed in the middle section of the sandblasting pipe. A spiral feeding pipe is connected to the input end of the storage tank. The end of the spiral feeding pipe away from the storage tank passes through the shot peening box and is connected to the bottom of the shot peening box.

[0010] A further improvement is made in that: the rotating bracket includes a rotating shaft, which is rotatably mounted on the upper end of the fixed frame. Several diagonal braces are arranged around the rotating shaft. The lower end of the diagonal braces is fixedly connected to the rotating shaft. An assembly rod is provided at the upper end of the diagonal brace. The assembly rod is fixedly connected to the diagonal brace. A support ring is provided at the connection between the assembly rod and the diagonal brace. The support ring is fixedly arranged between the diagonal brace and the assembly rod to limit the position of the gear.

[0011] A further improvement is that the power unit includes a motor and a mounting cylinder. The mounting cylinder is placed below the fixed frame. One end of the mounting cylinder is fixedly connected to the shot peening box, and the other end of the mounting cylinder is fixedly installed at the lower end of the fixed frame. The fixed frame is provided with a second bevel gear and a first bevel gear. The second bevel gear meshes with the first bevel gear. The first bevel gear is fixedly installed at the lower end of the rotating shaft. The output end of the motor is fixedly connected to the second bevel gear through a connecting shaft.

[0012] A further improvement is that the lifting mechanism includes a pneumatic push rod, which is fixedly mounted on the upper end of the shot peening box, and the output end of the pneumatic push rod is fixedly mounted on the upper end of the movable frame. The height of the movable frame is controlled by the pneumatic push rod.

[0013] A further improvement is that: at least one limiting rod is provided at the upper end of the mounting cylinder, the upper end of the limiting rod is fixedly set on the top wall inside the shot peening box, the limiting rod passes through the movable frame, and the movable frame is slidably connected to the limiting rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The nozzle sprays sand shot, which cleans the gear components on the rotating support through the high-speed flow of sand shot. During the cleaning process, the power unit controls the rotation of the rotating support, and the lifting mechanism controls the raising and lowering of the movable frame to ensure that the top, bottom and sides of the gear components can be fully cleaned, thereby improving the surface treatment effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a structural diagram of the external structure of the shot peening box in this utility model.

[0018] Figure 2 This is a structural diagram of the internal structure of the shot peening box in this utility model.

[0019] Figure 3 This is a structural diagram of the fixing frame in this utility model.

[0020] The components are: 1. Shot peening box; 2. Storage tank; 3. Air pump; 4. Discharge port; 5. Pneumatic push rod; 6. Motor; 7. Guide pipe; 8. Spiral feed pipe; 9. Guide pipe; 10. Mounting cylinder; 11. Fixing frame; 12. Rotating shaft; 13. Diagonal brace; 14. Assembly rod; 15. Limiting rod; 16. Sandblasting pipe; 17. Nozzle; 18. Movable frame; 19. First bevel gear; 20. Second bevel gear. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a shot peening device for surface treatment of half-shaft gears, including a shot peening box 1 and a discharge port 4 located at the lower end of the shot peening box 1. A fixing frame 11 is provided inside the shot peening box 1, and the fixing frame 11 is fixedly installed inside the shot peening box 1.

[0023] The upper end of the fixed frame 11 is provided with a rotating bracket for placing gear parts. The rotating bracket is rotatably connected to the fixed frame 11. The lower end of the fixed frame 11 is provided with a power device for controlling the rotation of the rotating bracket.

[0024] A movable frame 18 is provided above the rotating support. The movable frame 18 is slidably disposed inside the shot peening box 1. A sandblasting pipe 16 is provided at the lower end of the movable frame 18. The sandblasting pipe 16 is fixedly disposed in the center of the movable frame 18. A nozzle 17 is provided at the lower end of the sandblasting pipe 16. The nozzle 17 is placed in the center of the rotating support. A lifting mechanism for adjusting the height of the movable frame 18 is provided at the upper end of the shot peening box 1.

[0025] The shot peening box 1 has a window panel on its outer side. After the window panel is opened, the gear parts to be treated are placed on the rotating support. The movable frame 18 is lowered by the lifting mechanism, and the sandblasting pipe 16 fixed to the movable frame 18 also falls down. The nozzle 17 sprays sand shot, which cleans the gear parts on the rotating support through the high-speed flow of sand shot. During the cleaning process, the power unit controls the rotation of the rotating support, and the lifting mechanism controls the rise and fall of the movable frame 18 to ensure that the top, bottom, and sides of the gear parts are thoroughly cleaned, improving the surface treatment effect.

[0026] An air pump 3 is provided on the outside of the shot peening box 1. The output end of the air pump 3 is connected to a guide pipe 9. The end of the guide pipe 9 away from the air pump 3 passes through the shot peening box 1 and is connected to the sandblasting pipe 16. The guide pipe 9 is fixedly installed on the upper end of the sandblasting pipe 16.

[0027] A storage tank 2 is provided on the outside of the shot peening box 1. A guide pipe 7 is connected to the output end of the storage tank 2. The end of the guide pipe 7 away from the storage tank 2 passes through the shot peening box 1 and is connected to the sandblasting pipe 16. The guide pipe 7 is fixedly installed in the middle section of the sandblasting pipe 16. A spiral feeding pipe 8 is connected to the input end of the storage tank 2. The end of the spiral feeding pipe 8 away from the storage tank 2 passes through the shot peening box 1 and is connected to the bottom of the shot peening box 1.

[0028] During operation, the storage tank 2 collects and transports the processed pellets scattered into the storage tank 2 through the spiral feeding pipe 8. The guide pipe 7 is connected to the pneumatic system, and the opening of the feed valve on the storage tank 2 is adjusted by the pneumatic system so that the pellets fall into the guide pipe 7 and the sandblasting pipe 16 at a set flow rate. The air pump 3 provides compressed air through the guide pipe 9, which pushes the pellets to flow at high speed along the pipeline and spray them onto the surface of the workpiece through the nozzle 17 to complete the impact strengthening or cleaning. After spraying, the pellets fall back into the recycling system to form a closed loop and ensure the efficient utilization of the pellets.

[0029] Regarding the rotating bracket:

[0030] The rotating support includes a rotating shaft 12, which is rotatably mounted on the upper end of the fixed frame 11. Several diagonal braces 13 are arranged around the rotating shaft 12. The lower ends of the diagonal braces 13 are fixedly connected to the rotating shaft 12, and the upper ends of the diagonal braces 13 are equipped with mounting rods 14, which are fixedly connected to the diagonal braces 13. A support ring is provided at the connection between the mounting rods 14 and the diagonal braces 13, and the support ring is fixedly positioned between the diagonal braces 13 and the mounting rods 14 to limit the movement of the gears. During shot peening, the gears are fitted onto the outside of each mounting rod 14. The power unit controls the rotation of the rotating shaft 12, and the rotation of the rotating shaft 12 drives the mounting rods 14 to rotate together via the diagonal braces 13. It is important to note that the rotational speed of the rotating shaft 12 should not be too high to prevent the gears from being thrown off the mounting rods 14 during high-speed rotation.

[0031] Specifically, the power unit includes a motor 6 and a mounting cylinder 10. The mounting cylinder 10 is positioned below the fixed frame 11. One end of the mounting cylinder 10 is fixedly connected to the shot peening box 1, and the other end is fixedly mounted on the lower end of the fixed frame 11. The fixed frame 11 contains a second bevel gear 20 and a first bevel gear 19. The second bevel gear 20 meshes with the first bevel gear 19. The first bevel gear 19 is fixedly mounted on the lower end of the rotating shaft 12. The output end of the motor 6 is fixedly connected to the second bevel gear 20 via a connecting shaft. The motor 6 controls the rotation of the second bevel gear 20 via the connecting shaft. When the second bevel gear 20 rotates, it meshes with the first bevel gear 19, causing the first bevel gear 19 to rotate. Since the first bevel gear 19 is fixed to the rotating shaft 12, the rotating shaft 12 will also rotate when the first bevel gear 19 rotates.

[0032] Regarding the lifting mechanism:

[0033] The lifting mechanism includes a pneumatic push rod 5, which is fixedly mounted on the upper end of the shot peening box 1. The output end of the pneumatic push rod 5 is fixedly mounted on the upper end of the movable frame 18, and the height of the movable frame 18 is controlled by the pneumatic push rod 5.

[0034] It is worth explaining in detail that the upper end of the mounting cylinder 10 is provided with at least one limiting rod 15. The upper end of the limiting rod 15 is fixedly set on the top wall inside the shot peening box 1. The limiting rod 15 passes through the movable frame 18, and the movable frame 18 is slidably connected to the limiting rod 15. When the pneumatic push rod 5 pushes the movable frame 18 down or up, the movable frame 18 will slide along the rod body of the limiting rod 15. The limiting rod 15 guides the movable frame 18 by cooperating with it, thereby improving the stability of the movable frame 18 when sliding.

[0035] How this application works:

[0036] After the outer window of the shot peening box 1 is opened, the gear to be treated is fitted onto the mounting rod 14 of the rotating bracket. The movable frame 18 is lowered by the pneumatic push rod 5, bringing the nozzle 17 close to the gear. The air pump 3 and motor 6 are started. The air pump 3 injects compressed air into the sandblasting pipe 16 through the guide pipe 9. The storage tank 2 conveys the shot to the sandblasting pipe 16 through the guide pipe 7. The shot is ejected from the nozzle 17 under the drive of the high-speed airflow, impacting the gear surface. At the same time, the motor 6 drives the rotating shaft 12 to rotate through the bevel gear transmission, causing the gear to rotate with the rotating bracket. The pneumatic push rod 5 synchronously controls the raising and lowering of the movable frame 18 to ensure that all parts of the gear are shot peened. The treated shot falls into the bottom of the shot peening box 1 through the discharge port 4 and is recycled to the storage tank 2 through the spiral feed pipe 8 for reuse.

[0037] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A shot peening apparatus for surface treatment of axle gears, comprising a shot peening box (1) and a discharge port (4) located at the lower end of the shot peening box (1), wherein a fixing frame (11) is provided inside the shot peening box (1), characterized in that, The fixing frame (11) is fixedly installed inside the shot peening box (1); The upper end of the fixed frame (11) is provided with a rotating bracket for placing gear parts. The rotating bracket is rotatably connected to the fixed frame (11). The lower end of the fixed frame (11) is provided with a power device for controlling the rotation of the rotating bracket. A movable frame (18) is provided above the rotating support. The movable frame (18) is slidably disposed inside the shot peening box (1). A sandblasting pipe (16) is provided at the lower end of the movable frame (18). The sandblasting pipe (16) is fixedly disposed in the center of the movable frame (18). A nozzle (17) is provided at the lower end of the sandblasting pipe (16). The nozzle (17) is placed in the center of the rotating support. A lifting mechanism for adjusting the height of the movable frame (18) is provided at the upper end of the shot peening box (1).

2. The shot peening equipment for surface treatment of axle gears according to claim 1, characterized in that: An air pump (3) is provided on the outside of the shot peening box (1). The output end of the air pump (3) is connected to a guide pipe (9). The end of the guide pipe (9) away from the air pump (3) passes through the shot peening box (1) and is connected to the sandblasting pipe (16). The guide pipe (9) is fixedly installed on the upper end of the sandblasting pipe (16).

3. The shot peening equipment for surface treatment of axle gears according to claim 2, characterized in that: The shot peening box (1) is provided with a storage tank (2) on the outside. The output end of the storage tank (2) is connected to a guide pipe (7). The end of the guide pipe (7) away from the storage tank (2) passes through the shot peening box (1) and is connected to the sandblasting pipe (16). The guide pipe (7) is fixedly installed in the middle section of the sandblasting pipe (16). The input end of the storage tank (2) is connected to a spiral feeding pipe (8). The end of the spiral feeding pipe (8) away from the storage tank (2) passes through the shot peening box (1) and is connected to the bottom of the shot peening box (1).

4. The shot peening equipment for surface treatment of axle gears according to claim 1, characterized in that: The rotating bracket includes a rotating shaft (12), which is rotatably mounted on the upper end of the fixed frame (11). Several diagonal braces (13) are arranged around the rotating shaft (12). The lower end of the diagonal braces (13) is fixedly connected to the rotating shaft (12). An assembly rod (14) is provided at the upper end of the diagonal braces (13). The assembly rod (14) is fixedly connected to the diagonal braces (13). A support ring is provided at the connection between the assembly rod (14) and the diagonal braces (13). The support ring is fixedly arranged between the diagonal braces (13) and the assembly rod (14) to limit the position of the gear.

5. The shot peening equipment for surface treatment of half-shaft gears according to claim 4, characterized in that: The power unit includes a motor (6) and a mounting cylinder (10). The mounting cylinder (10) is placed below the fixed frame (11). One end of the mounting cylinder (10) is fixedly connected to the shot peening box (1), and the other end of the mounting cylinder (10) is fixedly disposed at the lower end of the fixed frame (11). The fixed frame (11) is provided with a second bevel gear (20) and a first bevel gear (19). The second bevel gear (20) meshes with the first bevel gear (19). The first bevel gear (19) is fixedly disposed at the lower end of the rotating shaft (12). The output end of the motor (6) is fixedly connected to the second bevel gear (20) through a connecting shaft.

6. The shot peening equipment for surface treatment of half-shaft gears according to claim 1, characterized in that: The lifting mechanism includes a pneumatic push rod (5), which is fixedly installed on the upper end of the shot peening box (1), and the output end of the pneumatic push rod (5) is fixedly installed on the upper end of the movable frame (18).

7. The shot peening equipment for surface treatment of half-shaft gears according to claim 5, characterized in that: At least one limiting rod (15) is provided at the upper end of the mounting cylinder (10). The upper end of the limiting rod (15) is fixedly set on the top wall inside the shot peening box (1). The limiting rod (15) passes through the movable frame (18). The movable frame (18) is slidably connected to the limiting rod (15).

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