Modularly mounted pinion shaft

Abstract

The application discloses a modularly installed pinion shaft, which comprises a shaft rod body and a locking unit connected with the shaft rod body, and a plurality of gaskets and a plurality of gear units are arranged at the shaft rod body. The pinion shaft can select different gear units according to the size of gears of parts to be matched and the interval between gears, and the interval between the gear units is adjusted through the gaskets, so that modular production can be realized, and the pinion shaft can be applied to different occasions. The modular installation is realized, so that the assembly is faster and more convenient, and the later adjustment and maintenance are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of gear shafts, and more specifically, to a modularly mounted gear shaft. Background Technology

[0002] In the field of mechanical engineering, gear shafts typically refer specifically to gear shafts, which are key mechanical components that integrate gears and drive shafts. Gear shafts are widely used in applications with stringent requirements for space, precision, and load, such as drive shafts inside automotive transmissions, various industrial speed reducers (especially the sun gear in planetary speed reducers), and transmission systems in aircraft engines and high-precision machine tools.

[0003] Existing gear shafts design and manufacture the shaft and gears as a single unit. The gears are permanently fixed to the shaft using methods such as interference fits and key connections, making them difficult to disassemble. In this type of integral gear shaft, the size, number, and spacing of the gears are all fixed. If product requirements change—for example, requiring the replacement of a gear with a different number of teeth or adjusting the gear spacing to accommodate a new transmission layout—the entire shaft needs to be remanufactured. This results in significant waste and hinders rapid adaptation to changes. Furthermore, if only one gear is severely worn or damaged during use, maintenance personnel often need to disassemble the entire gear shaft assembly from the equipment. In many cases, the entire assembly must be replaced, leading to very high maintenance costs and significant downtime. Utility Model Content

[0004] The present invention aims to overcome the defects of the prior art and provide a modularly mounted gear shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modularly installed gear shaft, comprising a shaft body and a locking unit connected to the shaft body. The shaft body is provided with multiple washers and multiple gear units. The outer circumferential surface of the shaft body is provided with multiple limiting ribs, which are distributed in a ring at equal intervals. The inner circumferential surface of the washers is provided with multiple first limiting grooves that mate with the limiting ribs. The inner circumferential surface of the gear units is provided with multiple second limiting grooves that mate with the limiting ribs. The locking unit includes a threaded rod and a nut fixedly connected to the threaded rod. The shaft body has a threaded hole at its end that mates with the threaded rod. A clamping unit surrounding the threaded rod is provided at the nut. The clamping unit is rotatable relative to the nut. The outer circumferential surface of the clamping unit has multiple slots that mate with the limiting ribs. Multiple locking bolts are provided at the clamping unit to fix the relative position of the clamping unit and the shaft body. A circular abutment block is provided at the end of the shaft body away from the locking unit. The circular abutment block can abut against the gear unit closest to the circular abutment block. The clamping unit can abut against the gear unit closest to the locking unit.

[0006] Furthermore, the limiting rib extends along the length direction of the shaft body.

[0007] Furthermore, the inner wall of the clamping unit has a circular groove, and a slider that can slide within the circular groove is fixed at the nut.

[0008] This allows the clamping unit to rotate smoothly relative to the nut.

[0009] Furthermore, a strip-shaped abutment plate is formed between two adjacent slots. The end of the strip-shaped abutment plate can abut against one of the gear units. The locking bolt is provided at the strip-shaped abutment plate. The strip-shaped abutment plate has a fixing hole that mates with the locking bolt. The locking bolt passes through the fixing hole and abuts against the shaft body.

[0010] This ensures a stable connection between the clamping unit and the shaft body.

[0011] Furthermore, multiple locking bolts are distributed in a ring at equal intervals.

[0012] Furthermore, the nut is an internal hexagonal nut.

[0013] Furthermore, at least one washer is provided between two adjacent gear units.

[0014] Furthermore, a plurality of washers are provided between two adjacent gear units.

[0015] This method of stacking multiple washers allows for adjustment of the spacing between gear units, making modular installation more convenient.

[0016] In other embodiments, a washer of fixed length can also be selected, resulting in better stability.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The gear shaft of this application can be selected according to the size of the gears of the components to be mated and the spacing between the gears, and the spacing between the gear units can be adjusted by using washers, thereby enabling modular production and making it suitable for different occasions.

[0019] 2. The gear shaft of this application enables modular installation, which makes assembly faster and more convenient, and facilitates later adjustment and maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a gear shaft;

[0021] Figure 2 This is a schematic diagram showing the separation of the gear shaft component;

[0022] Figure 3 This is a magnified view of region A;

[0023] Figure 4 This is a magnified view of region B.

[0024] Figure 5 This is a magnified view of region C.

[0025] Explanation of reference numerals in the attached drawings: Shaft body 1; Limiting rib 1.1; Threaded hole 1.2; Circular abutment block 1.3; Washer 2; First limiting groove 2.1; Gear unit 3; Second limiting groove 3.1; Threaded rod 4; Nut 5; Tightening unit 6; Slot 6.1; Locking bolt 6.2; Strip-shaped tightening plate 6.3. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-5 The diagram illustrates a modularly mounted gear shaft, comprising a shaft body 1 and a locking unit connected to the shaft body 1. The shaft body 1 has multiple washers 2 and multiple gear units 3. The outer circumferential surface of the shaft body 1 has multiple limiting ribs 1.1 distributed in a ring at equal intervals. The inner circumferential surface of each washer 2 has multiple first limiting grooves 2.1 that mate with the limiting ribs 1.1. The inner circumferential surface of each gear unit 3 has multiple second limiting grooves 3.1 that mate with the limiting ribs 1.1. The locking unit includes a threaded rod 4 and a nut 5 fixedly connected to the threaded rod 4. The end of the shaft body 1 has a... The threaded rod 4 has a threaded hole 1.2. A clamping unit 6 is provided at the nut 5 to surround the threaded rod 4. The clamping unit 6 can rotate relative to the nut 5. The outer circumferential surface of the clamping unit 6 has multiple slots 6.1 that mate with the limiting ribs 1.1. The clamping unit 6 is provided with multiple locking bolts 6.2 that can fix the relative position of the clamping unit 6 and the shaft body 1. A circular abutting block 1.3 is provided at the end of the shaft body 1 away from the locking unit. The circular abutting block 1.3 can abut against the gear unit 3 closest to the circular abutting block 1.3. The clamping unit 6 can abut against the gear unit 3 closest to the locking unit.

[0028] The limiting rib 1.1 extends along the length of the shaft body 1. The inner wall of the clamping unit 6 has a circular groove, and a slider that can slide within the circular groove is fixed at the nut 5. A strip-shaped clamping plate 6.3 is formed between two adjacent slots 6.1. The end of the strip-shaped clamping plate 6.3 can abut against one of the gear units. The locking bolt 6.2 is provided at the strip-shaped clamping plate 6.3. The strip-shaped clamping plate 6.3 has a fixing hole that mates with the locking bolt 6.2. The locking bolt 6.2 passes through the fixing hole and abuts against the shaft body 1. Multiple locking bolts 6.2 are distributed in a ring at equal intervals. At least one washer 2 is provided between two adjacent gear units.

[0029] Working principle: The gear shaft of this application can select different gear units according to the size of the gears of the parts that need to be matched and the spacing between the gears, and the spacing between the gear units can be adjusted by using washers, thereby realizing modular production and being applicable to different occasions.

[0030] During assembly, first select the required gear units and sequentially mount them onto the shaft body. Adjust the spacing between gear units by stacking washers as needed. Next, insert the threaded rod of the locking unit into the threaded hole. When using a tool to secure the nut and rotate the threaded rod, the locking unit, while circumferentially fixed to the shaft body (connected by a slot and limiting rib), can rotate relative to the nut. Therefore, the locking unit will press against the outermost gear unit. Finally, use locking bolts to secure the locking unit to the shaft body, preventing loosening under vibration.

[0031] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A modularly mounted gear shaft, characterized in that, The device includes a shaft body and a locking unit connected to the shaft body. The shaft body has multiple washers and multiple gear units. The outer circumferential surface of the shaft body has multiple limiting ribs distributed in a ring at equal intervals. The inner circumferential surface of the washers has multiple first limiting grooves that mate with the limiting ribs. The inner circumferential surface of the gear units has multiple second limiting grooves that mate with the limiting ribs. The locking unit includes a threaded rod and a nut fixedly connected to the threaded rod. The end of the shaft body has a part that mates with the threaded rod. The threaded hole is fitted with a locking unit surrounding the threaded rod at the nut. The locking unit is rotatable relative to the nut. The outer circumferential surface of the locking unit has multiple slots that mate with the limiting ribs. The locking unit is provided with multiple locking bolts that can fix the relative position of the locking unit and the shaft body. A circular abutment block is provided at the end of the shaft body away from the locking unit. The circular abutment block can abut against the gear unit closest to the circular abutment block. The locking unit can abut against the gear unit closest to the locking unit.

2. The modularly mounted gear shaft according to claim 1, characterized in that, The limiting rib extends along the length of the shaft body.

3. The modularly mounted gear shaft according to claim 1, characterized in that, The inner wall of the clamping unit has a circular groove, and a slider that can slide within the circular groove is fixed at the nut.

4. The modularly mounted gear shaft according to claim 1, characterized in that, A strip-shaped clamping plate is formed between two adjacent slots. The end of the strip-shaped clamping plate can abut against one of the gear units. The locking bolt is provided at the strip-shaped clamping plate. The strip-shaped clamping plate has a fixing hole that mates with the locking bolt. The locking bolt passes through the fixing hole and abuts against the shaft body.

5. The modularly mounted gear shaft according to claim 1, characterized in that, Multiple locking bolts are distributed in a ring at equal intervals.

6. The modularly mounted gear shaft according to claim 1, characterized in that, At least one washer is provided between two adjacent gear units.

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