Gearbox gear heat treatment tooling

Abstract

The utility model belongs to gear heat treatment technical field especially relates to a gearbox gear heat treatment frock, including quenching pool, the top of quenching pool is provided with the top seat, a plurality of quenching cylinders are fixedly installed in the quenching pool, the top seat is slidably provided with the moving plate, the moving plate is connected with the connecting frame through the up-down movement of elevating system, the lower extreme of connecting frame is fixedly connected with a plurality of adjusting shafts, the lower extreme of every adjusting shaft all is provided with the clamping mechanism, the clamping mechanism includes a plurality of clamping axle, the upper surface of every clamping axle all is provided with the convex strip, the clamping mechanism is used for clamping gear. The elevating system and moving mechanism cooperation of the utility model can remove and place the gear from the quenching pool, the clamping mechanism can carry out the feeding and discharging of gear, the whole process is completely automated operation, effectively reduces the staff operation, and the staff can be far from heat treatment structure, guarantees the work safety.

Description

Technical Field

[0001] This utility model belongs to the field of gear heat treatment technology, and in particular relates to a heat treatment fixture for gearbox gears. Background Technology

[0002] Gears in a gearbox often operate under high speed, high load, and constantly changing speed and load conditions. Gear quality is an important factor in the service life of a gearbox. Heat treatment can effectively change the service life of gears. Gear heat treatment is a heat treatment process for gear manufacturing, and its deformation control directly affects the gear's precision, strength, and life.

[0003] CN219807990U discloses a heat treatment fixture for gearbox gears, relating to the field of gearbox gears. It includes a base, a support leg on the top of the base, a heat treatment fixture body on the top of the base, and an insulation layer on the inner wall of the heat treatment fixture body. This utility model uses nuts to fix the gearbox gear body on a fixing rod.

[0004] As is known from existing technology, when heat treating gears, the loading and unloading processes during quenching generally require the assistance of workers. Workers need to operate the equipment using fixtures, which is especially problematic when performing batch operations. This results in a large workload for workers, and there are certain safety issues associated with being close to the quenching heating equipment. Utility Model Content

[0005] This utility model addresses the technical problem in the background art where the loading and unloading processes for quenching require manual assistance and the use of fixtures, which is particularly problematic during batch operations due to the heavy workload for workers and the safety concerns associated with being close to the quenching heating equipment. The proposed invention provides a gearbox gear heat treatment fixture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A heat treatment fixture for gearbox gears includes a quenching tank, a top seat above the quenching tank, multiple quenching cylinders fixedly installed inside the quenching tank, a movable plate slidably mounted on the top seat, the movable plate being connected to a connecting frame by a lifting mechanism, and multiple adjusting shafts fixedly connected to the lower end of the connecting frame.

[0008] Each of the adjusting shafts is provided with a locking mechanism at its lower end. The locking mechanism includes multiple clamping shafts, and each clamping shaft has a protrusion on its upper surface. The locking mechanism is used to lock the gear. The clamping shaft is locked on the lower surface of the gear. The connecting frame is provided with a linkage mechanism, which is used to drive the multiple clamping shafts on the locking mechanism to rotate.

[0009] Preferably, the lifting mechanism includes two sliding plates slidably mounted on the top seat. Each sliding plate has a moving mechanism on both sides. A first hydraulic cylinder is fixedly installed on the upper surface of the two sliding plates. The driving end of the first hydraulic cylinder passes through the sliding plate and is fixedly connected to the moving plate. The moving plate is mounted on the top seat and located below the sliding plates.

[0010] Preferably, the moving mechanism includes multiple rollers, which are rotatably connected to the slide plate and roll along the surface of the top seat. The slide plate is equipped with a motor corresponding to the rollers, and the drive end of the motor is fixedly connected to the rollers.

[0011] Preferably, the movable plate has a sliding opening, the connecting frame moves up and down through the sliding opening, the linkage mechanism includes two second hydraulic cylinders symmetrically fixedly installed on the movable plate, a support plate is symmetrically fixedly connected to the upper end of the connecting frame, the support plate has a hole, the second hydraulic cylinder passes through the hole, and the driving end of the second hydraulic cylinder is fixedly connected to an inverted U-shaped shaft, the inverted U-shaped shaft is fixedly connected to the support plate.

[0012] Preferably, each of the adjusting shafts has a connecting block at its lower end, and an outer frame is fixedly connected to the lower part of the moving plate along the edge of the sliding opening. The connecting frame is located inside the outer frame, and the connecting block is fixedly connected to the outer frame through multiple positioning shafts. The lower end of the outer frame is also provided with multiple limiting holes for the adjusting shaft to pass through. A groove is provided inside the connecting block, and one end of each clamping shaft is rotatably connected to the inner wall of the groove. The lower end of the adjusting shaft is also movably connected to the clamping shaft.

[0013] Preferably, each of the clamping shafts is fixedly connected to a rear shaft at one end facing the groove, and a linkage shaft is rotatably connected to the end of the rear shaft away from the clamping shaft. The end of the linkage shaft away from the rear shaft rotates with the lower end of the adjusting shaft.

[0014] Preferably, the top seat includes two tracks arranged symmetrically on the left and right sides. The tracks are L-shaped. The connecting frame is disposed between the two tracks. The two sliding plates are respectively mounted on the upper ends of the two tracks. The two sliding plates are fixedly connected together by a fixed shaft.

[0015] Preferably, the groove is provided with a plurality of openings for use with clamping shafts, the plurality of openings are equidistantly arranged around the groove, and the end of each clamping shaft passes through the opening and is rotatably connected to the inner wall of the groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The lifting and moving mechanisms of this device work together to remove and place gears from the quenching tank, and the clamping mechanism can load and unload gears. The entire process is fully automated, effectively reducing the need for manual operation, and allowing workers to stay away from the heat treatment structure, ensuring work safety.

[0018] 2. The snap-fit ​​mechanism of this device allows each clamping shaft and connecting block to pass through the shaft hole of the gear. When each clamping shaft is unfolded, it can support the bottom of the gear, achieving the snap-fit ​​effect on the gear. The convex strip separates the clamping shaft from the gear, ensuring sufficient quenching. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a gearbox gear heat treatment fixture proposed in this utility model;

[0020] Figure 2 This is a partial structural schematic diagram of a gearbox gear heat treatment fixture proposed in this utility model;

[0021] Figure 3 This is a partial structural diagram of the outer frame, adjusting shaft, and snap-fit ​​mechanism;

[0022] Figure 4 This is a schematic diagram of the snap-fit ​​mechanism;

[0023] Figure 5 for Figure 4 A schematic diagram of the structure viewed from below;

[0024] Figure 6 This is a partial structural diagram of the locking mechanism.

[0025] In the diagram: 1. Top seat; 2. Quenching pool; 3. Slide plate; 4. Moving plate; 5. Connecting frame; 6. First hydraulic cylinder; 7. Roller; 8. Second hydraulic cylinder; 9. Quenching cylinder; 10. Adjusting shaft; 11. Support plate; 12. Positioning shaft; 13. Outer frame; 14. Inverted U-shaped shaft; 15. Clamping shaft; 16. Protrusion; 17. Linkage shaft; 18. Groove; 19. Rear shaft; 20. Connecting block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0028] Reference Figures 1-2 A heat treatment fixture for gearbox gears includes a quenching tank 2, a top seat 1 is provided above the quenching tank 2, multiple quenching cylinders 9 are fixedly installed inside the quenching tank 2, a movable plate 4 is slidably provided on the top seat 1, the movable plate 4 is connected to a connecting frame 5 by moving up and down through a lifting mechanism, and multiple adjusting shafts 10 are fixedly connected to the lower end of the connecting frame 5.

[0029] Reference Figure 4 Each adjusting shaft 10 has a snap-fit ​​mechanism at its lower end. The snap-fit ​​mechanism includes multiple clamping shafts 15. Each clamping shaft 15 has a protrusion 16 on its upper surface. The snap-fit ​​mechanism is used to snap the gear. The clamping shaft 15 is snapped onto the lower surface of the gear. The connecting frame 5 is provided with a linkage mechanism. The linkage mechanism is used to drive the multiple clamping shafts 15 on the snap-fit ​​mechanism to rotate.

[0030] Reference Figures 1-2 The lifting mechanism includes two sliding plates 3 mounted on the top seat 1. Each sliding plate 3 has a moving mechanism on both sides. A first hydraulic cylinder 6 is fixedly mounted on the upper surface of the two sliding plates 3. The drive end of the first hydraulic cylinder 6 passes through the sliding plate 3 and is fixedly connected to a moving plate 4. The moving plate 4 is located on the top seat 1 and below the sliding plates 3. When it is necessary to remove the quenched gear from the quenching cylinder 9 or place the gear into the quenching cylinder 9, the first hydraulic cylinder 6 drives the moving plate 4 to move up and down via its drive end, thereby removing or placing the gear from the quenching pool 2 using the adjusting shaft 10 and the locking mechanism.

[0031] The top base 1 includes two L-shaped tracks arranged symmetrically on the left and right sides. A connecting frame 5 is located between the two tracks, and two sliding plates 3 are respectively mounted on the upper ends of the two tracks and are fixedly connected together by a fixed shaft. The lifting mechanism moves up and down and back and forth between the two tracks, while the moving mechanisms on both sides drive the entire component to move horizontally.

[0032] The moving mechanism includes multiple rollers 7, which are rotatably connected to the slide plate 3 and roll along the surface of the top seat 1. A motor corresponding to each roller 7 is mounted on the slide plate 3, and the drive end of the motor is fixedly connected to the roller 7. When cooling or loading / unloading the gears is required, the motor drives the rollers 7 to rotate via its drive end. As the rollers 7 rotate, the slide plate 3 moves relative to the top seat 1, thereby removing the gears from above the quenching tank 2, allowing for further operations on the gears.

[0033] The movable plate 4 has a sliding opening, through which the connecting frame 5 moves up and down. The linkage mechanism includes two second hydraulic cylinders 8 symmetrically fixedly installed on the movable plate 4. A support plate 11 is symmetrically fixedly connected to the upper end of the connecting frame 5. The support plate 11 has holes through which the second hydraulic cylinders 8 pass. The driving end of the second hydraulic cylinder 8 is fixedly connected to an inverted U-shaped shaft 14, which is fixedly connected to the support plate 11. The second hydraulic cylinder 8 can drive the inverted U-shaped shaft 14 to move up and down through its driving end. The inverted U-shaped shaft 14 drives the connecting frame 5 to move up and down through the support plate 11, thereby changing the height position of the adjusting shaft 10 relative to the movable plate 4, thus operating the locking mechanism. The connecting frame 5 is a truss structure, which can ensure the stability of each adjusting shaft 10 structure when the gap between the top seat 1 and the quenching pool 2 is opened. The first hydraulic cylinder 6 and the second hydraulic cylinder 8 are both located on the side away from the quenching pool 2 to avoid the first hydraulic cylinder 6 and the second hydraulic cylinder 8 being affected by high temperature.

[0034] Reference Figures 3-6 Each adjusting shaft 10 has a connecting block 20 at its lower end. An outer frame 13 is fixedly connected to the lower part of the sliding plate 4 along the edge of the sliding opening. A connecting frame 5 is located inside the outer frame 13. The connecting block 20 is fixedly connected to the outer frame 13 via multiple positioning shafts 12. The lower end of the outer frame 13 also has multiple limiting holes for the adjusting shaft 10 to pass through. A groove 18 is provided inside the connecting block 20. One end of each clamping shaft 15 is rotatably connected to the inner wall of the groove 18. The lower end of the adjusting shaft 10 is also movably connected to the clamping shaft 15. The connecting block 20 limits the angle via the positioning shafts 12. The adjusting shaft 10 is movably connected to the clamping shaft 15, while the clamping shaft 15 is also rotatably connected to the connecting block 20. By moving the adjusting shaft 10, the angle of each clamping shaft 15 is changed, thereby achieving the effect of engaging or disengaging the gear.

[0035] Each clamping shaft 15 is fixedly connected to a rear shaft 19 at one end facing the groove 18. The end of the rear shaft 19 away from the clamping shaft 15 is rotatably connected to a linkage shaft 17. The end of the linkage shaft 17 away from the rear shaft 19 rotates with the lower end of the adjusting shaft 10. The clamping shaft 15 and the rear shaft 19 form an integral structure. The adjusting shaft 10 changes the angle position of one end of the rear shaft 19 through the linkage shaft 17. The rear shaft 19 changes the angle of the clamping shaft 15 relative to the inner wall of the groove 18. The up and down movement of the adjusting shaft 10 simultaneously controls each linkage shaft 17, thereby synchronously controlling each clamping shaft 15.

[0036] The groove 18 has multiple openings for use with clamping shafts 15. These openings are equidistantly arranged around the groove 18, and the end of each clamping shaft 15 passes through an opening and is rotatably connected to the inner wall of the groove 18. By providing multiple openings and placing each clamping shaft 15 within its respective opening, the openings are separated from each other and do not interfere with each other.

[0037] Reference Figures 3-6 When heat treatment is required on the gears, the gears are arranged in a neat sequence. The second hydraulic cylinder 8 in the linkage mechanism drives the inverted U-shaped shaft 14 upward through the drive end. The inverted U-shaped shaft 14 drives the connecting frame 5 upward through the support plate 11. The connecting frame 5 drives each adjusting shaft 10 upward. The connecting block 20 is fixed to the outer frame 13 through each positioning shaft 12. The outer frame 13 is fixedly connected to the moving plate 4. The relative position of the moving plate 4 and the second hydraulic cylinder 8 is fixed. When the adjusting shaft 10 moves upward, the adjusting shaft 10 pulls the clamping shaft 15 inward through the linkage shaft 17. With the rear shaft 19 at one end facing upwards, one end of the clamping shaft 15 faces downwards, causing each clamping shaft 15 to flip downwards and retract the locking mechanism. Then, each clamping shaft 15 and the connecting block 20 can pass through the shaft hole of the gear. After the clamping shaft 15 has completely passed through the shaft hole, the adjusting shaft 10 moves downwards in the opposite direction, and each clamping shaft 15 will unfold. The adjusting shaft 10 pushes the linkage shaft 17, and the linkage shaft 17 causes the clamping shaft 15 to flip again through the rear shaft 19, so that each clamping shaft 15 can be supported at the bottom of the gear. The convex strip 16 separates the clamping shaft 15 from the gear to ensure sufficient quenching.

[0038] Reference Figures 1-2 When each clamping mechanism supports each gear, the first hydraulic cylinder 6 in the lifting mechanism drives the moving plate 4 to move upward through the drive end. The moving plate 4 is connected to the connecting frame 5 through the second hydraulic cylinder 8. The adjusting shaft 10 clamps the gear through the clamping mechanism. Thus, when the first hydraulic cylinder 6 drives the moving plate 4 to move upward, it can drive each gear to move upward synchronously, so that the clamping mechanism can carry the gear and move it.

[0039] The motor drives the roller 7 to rotate through the drive end. As the roller 7 rotates, it can drive the slide plate 3 and the first hydraulic cylinder 6 to move relative to the top seat 1, and then drive the moving plate 4 and the gear to move relative to the top seat 1, transporting the gear to the position above the quenching pool 2. Then, the lifting mechanism places each gear into each quenching cylinder 9 for heat treatment. The quenching cylinder 9 is existing technology, and its working principle is based on the principle of electromagnetic induction. The specific structure will not be explained in detail.

[0040] After the gear heat treatment is completed, the lifting mechanism and the moving mechanism work together to remove the gear from the quenching tank 2. The locking mechanism can unload the gear. The whole process is fully automated, which effectively reduces the number of workers and allows workers to stay away from the heat treatment structure, ensuring work safety.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gearbox gear heat treatment installation comprising a quenching bath (2), characterised in that, A top seat (1) is provided above the quenching pool (2). Multiple quenching cylinders (9) are fixedly installed inside the quenching pool (2). A movable plate (4) is slidably provided on the top seat (1). The movable plate (4) is connected to a connecting frame (5) by moving up and down through a lifting mechanism. Multiple adjusting shafts (10) are fixedly connected to the lower end of the connecting frame (5). Each of the adjusting shafts (10) is provided with a snap-fit ​​mechanism at its lower end. The snap-fit ​​mechanism includes multiple clamping shafts (15). Each clamping shaft (15) has a protrusion (16) on its upper surface. The snap-fit ​​mechanism is used to snap the gear. The clamping shaft (15) is snapped onto the lower surface of the gear. The connecting frame (5) is provided with a linkage mechanism. The linkage mechanism is used to drive the multiple clamping shafts (15) on the snap-fit ​​mechanism to rotate.

2. The gearbox gear heat treatment fixture according to claim 1, characterized in that, The lifting mechanism includes two sliding plates (3) mounted on the top seat (1). Each sliding plate (3) has a moving mechanism on both sides. A first hydraulic cylinder (6) is fixedly installed on the upper surface of the two sliding plates (3). The driving end of the first hydraulic cylinder (6) passes through the sliding plate (3) and is fixedly connected to the moving plate (4). The moving plate (4) is mounted on the top seat (1) and located below the sliding plate (3).

3. The gearbox gear heat treatment fixture according to claim 2, characterized in that, The moving mechanism includes multiple rollers (7), which are rotatably connected to the slide plate (3) and the rollers (7) roll along the surface of the top seat (1). The slide plate (3) is provided with a motor corresponding to the rollers (7), and the drive end of the motor is fixedly connected to the rollers (7).

4. The gearbox gear heat treatment fixture according to claim 1, characterized in that, The movable plate (4) has a sliding opening, and the connecting frame (5) moves up and down through the sliding opening. The linkage mechanism includes two second hydraulic cylinders (8) that are symmetrically fixedly installed on the movable plate (4). A support plate (11) is symmetrically fixedly connected to the upper end of the connecting frame (5). The support plate (11) has a hole, through which the second hydraulic cylinder (8) passes. The driving end of the second hydraulic cylinder (8) is fixedly connected to an inverted U-shaped shaft (14), which is fixedly connected to the support plate (11).

5. The gearbox gear heat treatment fixture according to claim 4, characterized in that, Each of the adjusting shafts (10) has a connecting block (20) at its lower end. The moving plate (4) is fixedly connected to an outer frame (13) along the edge of the sliding opening. The connecting frame (5) is located inside the outer frame (13). The connecting block (20) is fixedly connected to the outer frame (13) through multiple positioning shafts (12). The lower end of the outer frame (13) is also provided with multiple limiting holes for the adjusting shaft (10) to pass through. The connecting block (20) is provided with a groove (18). One end of each clamping shaft (15) is rotatably connected to the inner wall of the groove (18). The lower end of the adjusting shaft (10) is also movably connected to the clamping shaft (15).

6. The gearbox gear heat treatment fixture according to claim 5, characterized in that, Each of the clamping shafts (15) is fixedly connected to a rear shaft (19) at one end facing the groove (18). The rear shaft (19) away from the clamping shaft (15) is rotatably connected to a linkage shaft (17). The end of the linkage shaft (17) away from the rear shaft (19) rotates with the lower end of the adjusting shaft (10).

7. The gearbox gear heat treatment fixture according to claim 2, characterized in that, The top seat (1) includes two tracks arranged symmetrically on the left and right. The tracks are L-shaped. The connecting frame (5) is set between the two tracks. The two slide plates (3) are respectively mounted on the upper ends of the two tracks. The two slide plates (3) are fixedly connected together by a fixed shaft.

8. A gearbox gear heat treatment fixture according to claim 6, characterized in that, The groove (18) is provided with a plurality of openings that cooperate with the clamping shaft (15). The plurality of openings are arranged equidistantly around the groove (18). The end of each clamping shaft (15) passes through the opening and is rotatably connected to the inner wall of the groove (18).

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