A transmission output flange lock nut tightening tool

Abstract

The utility model discloses a transmission output end flange lock nut tightening frock relates transmission assembly frock technical field, from front to back at least includes front output flange positioning plate, rear output flange positioning plate, connecting plate and positioning plate, the positioning plate and rear output flange positioning plate are connected fixed through a plurality of guide shafts between, a plurality of sliding shaft sleeves are fixed on the connecting plate, the connecting plate is connected fixed through a plurality of connecting rods between with front output flange positioning plate, the front side of front output flange positioning plate is equipped with a plurality of front flange positioning pin insertion hole, and detachable front flange positioning pin is equipped in part front flange positioning pin insertion hole, the front side of rear output flange positioning plate is equipped with a plurality of rear flange positioning pin insertion hole, and detachable rear flange positioning pin is equipped in part rear flange positioning pin insertion hole. The utility model puts forward a kind of integrated positioning flange, tighten flange lock nut and the transmission output end flange lock nut tightening frock of compatible multiple models product.

Description

Technical Field

[0001] This utility model relates to the field of gearbox assembly tooling technology, and in particular to a gearbox output flange lock nut tightening tooling. Background Technology

[0002] In the assembly and production process of transmissions, the assembly and tightening process of the output flange lock nut directly determines the assembly accuracy and overall reliability of the product, and is a key quality control point.

[0003] Traditional processes use pneumatic wrenches to tighten lock nuts, while simultaneously relying on manual hand-held positioning flanges to suppress circumferential rotation during tightening. This method not only easily causes muscle fatigue in operators, leading to decreased work consistency, but also causes problems such as product quality fluctuations and low production efficiency. Furthermore, it poses safety hazards such as personnel misoperation and component collisions. Utility Model Content

[0004] To solve the above problems, this utility model proposes a gearbox output flange lock nut tightening fixture that integrates a positioning flange and a tightening flange lock nut, and is compatible with multiple product models.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A gearbox output flange lock nut tightening fixture, comprising at least a front output flange positioning plate, a rear output flange positioning plate, a connecting plate, and a positioning plate from front to back; The positioning plate and the rear output flange positioning plate are connected and fixed by several guide shafts. Several sliding bushings are fixed on the connecting plate. Each sliding bushing corresponds to a guide shaft. The sliding bushing is sleeved on the corresponding guide shaft. The connecting plate can slide along the guide shaft between the positioning plate and the rear output flange positioning plate. A spring is sleeved on each guide shaft located between the connecting plate and the positioning plate. The rear output flange positioning plate has an accommodating hole on its inner side that can accommodate the front output flange positioning plate. The connecting plate and the front output flange positioning plate are connected and fixed by several connecting rods, and the connecting rods pass through the accommodating hole on the rear output flange positioning plate. The front side of the front output flange positioning plate is provided with several front flange positioning pin insertion holes, and some of the front flange positioning pin insertion holes are provided with detachable front flange positioning pins. The front side of the rear output flange positioning plate is provided with several rear flange positioning pin insertion holes, and some of the rear flange positioning pin insertion holes are provided with detachable rear flange positioning pins. The front output flange positioning plate, connecting plate, and positioning plate are all provided with through holes at their centers for the tightening mechanism and the internal hexagonal sleeve to pass through.

[0006] Preferably, there are three guide shafts and three sliding bushings, and the positioning plate is in the shape of an annulus, with the three guide shafts distributed at equal intervals along the circumference of the positioning plate.

[0007] Preferably, the positioning plate is provided with mounting holes for fixing to the tightening mechanism.

[0008] This utility model has the following beneficial effects: 1. The positioning pins on the front and rear output flange positioning plates can not only accurately position the flanges, but also prevent the flanges from rotating circumferentially when tightening the flange lock nuts, ensuring the stability of the tightening process and accurately guaranteeing the control accuracy of tightening torque and angle; 2. The tooling adopts an integrated design of the front and rear output flange positioning plates, which can automatically switch and simultaneously accommodate the tightening operations of two types of flanges without the need for additional tooling changes; the front and rear output flange positioning plates have reserved multiple sets of positioning pin holes, and by adjusting the position of the positioning pins, more flange specifications can be adapted to achieve quick and compatible locking; 3. It effectively improves production cycle and work efficiency, and reduces the labor intensity and safety hazards of operators. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a side view of the present invention.

[0011] Figure 3 This is the front view of this utility model.

[0012] Figure 4 This is the front view of the front output flange positioning plate in this utility model.

[0013] Figure 5 This is the front view of the rear output flange positioning plate in this utility model.

[0014] Figure 6 This is the front view of the connecting plate in this utility model.

[0015] Figure 7 This is the front view of the positioning plate in this utility model.

[0016] Figure 8 This is a schematic diagram of the structure when tightening the lock nut of the front output flange using this utility model.

[0017] Figure 9 This is a schematic diagram of the structure when the output flange lock nut is tightened using this utility model.

[0018] 1: Front output flange positioning plate; 101: Front flange positioning pin insertion hole; 2: Rear output flange positioning plate; 201: Accommodation hole; 202: Rear flange positioning pin insertion hole; 3: Connecting plate; 4: Positioning plate; 5: Guide shaft; 6: Sliding bushing; 7: Spring; 8: Connecting rod; 9: Front flange positioning pin; 10: Rear flange positioning pin; 11: Through hole; 12: Mounting hole; 13: Tightening rod; 14: Hex socket sleeve; 15: Front output flange; 16: Rear output flange. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] A tooling for tightening the lock nut on the output flange of a transmission, see [reference]. Figures 1 to 7 From front to back, it includes at least the front output flange positioning plate 1, the rear output flange positioning plate 2, the connecting plate 3, and the positioning plate 4.

[0021] The positioning plate 4 and the rear output flange positioning plate 2 are connected and fixed by three guide shafts 5. The positioning plate 4 is annular, and the three guide shafts 5 are evenly spaced along the circumference of the positioning plate 4. Three sliding bushings 6 are fixed on the connecting plate 3. The sliding bushings 6 correspond one-to-one with the guide shafts 5. The sliding bushings 6 are sleeved on the corresponding guide shafts 5. The connecting plate 3 can slide along the guide shafts 5 between the positioning plate 4 and the rear output flange positioning plate 2. A spring 7 is sleeved on each of the guide shafts 5 located between the connecting plate 3 and the positioning plate 4.

[0022] The rear output flange positioning plate 2 has an accommodating hole 201 on its inner side to accommodate the front output flange positioning plate 1. The connecting plate 3 is connected and fixed to the front output flange positioning plate 1 by four connecting rods 8, which pass through the accommodating hole 201 on the rear output flange positioning plate 2. The front output flange positioning plate 1 can be retracted through the accommodating hole 201.

[0023] The front side of the front output flange positioning plate 1 is provided with a number of front flange positioning pin insertion holes 101, and some of the front flange positioning pin insertion holes 101 are provided with detachable front flange positioning pins 9.

[0024] The front side of the rear output flange positioning plate 2 is provided with several rear flange positioning pin insertion holes 202, and some of the rear flange positioning pin insertion holes 202 are provided with detachable rear flange positioning pins 10.

[0025] The front output flange positioning plate 1, connecting plate 3 and positioning plate 4 are all provided with through holes 11 for the tightening mechanism and the internal hexagonal sleeve to pass through.

[0026] The positioning plate 4 is provided with mounting holes 12 for fixing to the tightening mechanism.

[0027] The working principle of this utility model is as follows: This utility model is used in conjunction with a tightening mechanism. In use, the fixture is first fixed to the tightening mechanism. The rigid connection ensures the stability of the tightening process and precisely controls the tightening torque and angle. The tightening rod 13 and the internal hexagonal socket 14 located at the front end of the tightening rod 13 pass through the through holes 11 of the front output flange positioning plate 1, the connecting plate 3, and the positioning plate 4. Then, positioning pins are inserted into the corresponding positioning pin holes on the front side of the front output flange positioning plate 1 and the rear output flange positioning plate 2 according to the flange model.

[0028] When tightening the front output flange 15, first push the tooling forward so that the front flange positioning pin 9 on the front output flange positioning plate 1 engages with the corresponding hole on the front output flange 15, ensuring reliable fixation of the front output flange 15 during tightening and effectively preventing circumferential rotation of the front output flange 15. Then, the tightening rod 13 and the hexagonal socket 14 move forward and engage with the lock nut on the inner side of the front output flange 15. Finally, activate the tightening mechanism to tighten the lock nut. Figure 8 As shown.

[0029] During the tightening operation of the rear output flange 16, the tooling is first pushed forward. Because the front flange positioning pin 9 on the front output flange positioning plate 1 does not match the positioning hole on the rear output flange 16, the front output flange positioning plate 1 and the front flange positioning pin 9 move backward due to the resistance of the rear output flange 16. The front output flange positioning plate 1 moves backward through the receiving hole 201 on the rear output flange positioning plate 2 until the rear flange positioning pin 10 on the rear output flange positioning plate 2 engages with the corresponding hole on the rear output flange 16, thus reliably fixing the rear output flange 16 during the tightening process and effectively preventing circumferential rotation of the rear output flange 16. Then, the tightening rod 13 and the internal hexagonal socket 14 move forward and engage with the lock nut inside the rear output flange 16. Finally, the tightening mechanism is activated to tighten the lock nut. Figure 9 As shown. After the tightening of the rear output flange 16 is completed, the rear output flange positioning plate 2 is loosened. At this time, the front output flange positioning plate 1 automatically resets with the help of the spring 7 on the guide shaft 5.

[0030] In this invention, the front and rear output flange positioning plates are machined with pin holes of different pitch circle specifications. By flexibly adapting the positioning pins, it is compatible with a variety of product models, without the need for additional manufacturing or tooling replacement, thus greatly improving the versatility of the process.

Claims

1. A tooling for tightening the lock nut on the output flange of a transmission, characterized in that: From front to back, it includes at least the front output flange positioning plate (1), the rear output flange positioning plate (2), the connecting plate (3), and the positioning plate (4). The positioning plate (4) and the rear output flange positioning plate (2) are connected and fixed by a number of guide shafts (5). A number of sliding bushings (6) are fixed on the connecting plate (3). The sliding bushings (6) correspond one-to-one with the guide shafts (5). The sliding bushings (6) are sleeved on the corresponding guide shafts (5). The connecting plate (3) can slide along the guide shafts (5) between the positioning plate (4) and the rear output flange positioning plate (2). A spring (7) is sleeved on each of the guide shafts (5) located between the connecting plate (3) and the positioning plate (4). The rear output flange positioning plate (2) has an accommodating hole (201) on its inner side, which can accommodate the front output flange positioning plate (1). The connecting plate (3) is connected and fixed to the front output flange positioning plate (1) by several connecting rods (8). The connecting rods (8) pass through the accommodating hole (201) on the rear output flange positioning plate (2). The front of the front output flange positioning plate (1) is provided with several front flange positioning pin holes (101), and some of the front flange positioning pin holes (101) are provided with detachable front flange positioning pins (9). The front side of the rear output flange positioning plate (2) is provided with several rear flange positioning pin insertion holes (202), and some of the rear flange positioning pin insertion holes (202) are provided with detachable rear flange positioning pins (10). The center of the front output flange positioning plate (1), connecting plate (3) and positioning plate (4) are all provided with through holes (11) for the tightening mechanism and the internal hexagonal sleeve to pass through.

2. The gearbox output flange lock nut tightening fixture according to claim 1, characterized in that: The number of guide shafts (5) and sliding bushings (6) are three each. The positioning plate (4) is in the shape of a ring, and the three guide shafts (5) are distributed at equal intervals along the circumference of the positioning plate (4).

3. A tightening fixture for a transmission output flange lock nut according to claim 1 or 2, characterized in that: The positioning plate (4) is provided with mounting holes (12) for fixing with the tightening mechanism.

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