Multi-azimuth fixed gear shaft

Abstract

The utility model relates to a kind of gear shafts of multidirectional fixing, including shaft body, its one end is provided with the positioning slot of axial recess, for sleeve jointing axle shaft;The part of shaft body in positioning slot is provided with the connecting hole of radial extension, bolt passes through connecting hole from outside to inside, and is threadedly connected with axle shaft, the recessed installation slot is also provided in the groove bottom of positioning slot;Elastic member is used for installing in installation slot;Elastic member extends to positioning slot in the case where it is not under external force, when axle shaft and positioning slot are clamped, elastic member generates compression. By setting installation slot in the bottom of positioning slot and installing elastic member, make that axle shaft is assembled to positioning slot after automatically compressing elastic member, generate the continuous axial pre-tightening force. The pre-tightening force makes bolt and axle shaft, gear shaft between radial pressure, this pressure and the axial fastening force of bolt are perpendicular, play the role of thread locking, to effectively improve the anti-vibration performance.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, specifically a gear shaft that is fixed in multiple directions. Background Technology

[0002] In a gearbox, the gear shaft, as a core transmission component, plays a crucial role in transmitting torque and speed. Because the gear teeth inevitably wear under prolonged, high-load operating conditions, the gear shaft needs to be replaced or repaired periodically to ensure the gearbox's continued reliable operation.

[0003] To facilitate the assembly and disassembly of the gear shaft, existing technology typically includes a rotating coupling on the gearbox housing, allowing for a detachable connection between the gear shaft and the coupling via a sleeve at its end. To secure the axial and circumferential positions of both components, a connecting hole is usually machined radially in the gear shaft sleeve portion. Bolts pass through the connecting hole from the outside in and are threaded onto the coupling, thus achieving a tight fit between the two.

[0004] However, gearboxes inevitably generate vibration and impact loads during operation, especially in heavy-duty, high-speed, or harsh operating conditions. Under such continuous dynamic loads, radially mounted set bolts are prone to gradually loosening, retraction, or even complete detachment due to vibration. Once the bolts loosen, axial movement or slight circumferential misalignment will occur between the gear shaft and the coupling. This misalignment not only leads to unstable transmission, abnormal noise, and additional impacts, accelerating the wear of gears and bearings, but in more serious cases, it can cause the transmission chain to fail, affecting the normal operation of the entire gearbox and even causing equipment shutdown accidents.

[0005] Therefore, it is necessary to improve the connection and fixing structure between the gear shaft and the coupling, and design a reliable locking mechanism that can effectively resist vibration and prevent loosening. Utility Model Content

[0006] To address the technical problems in the background art, this utility model discloses a gear shaft that is fixed in multiple directions.

[0007] This utility model provides a gear shaft with multi-directional fixation, including a shaft body, one end of which is provided with an axially recessed positioning groove for connecting a connecting shaft; the part of the shaft body located in the positioning groove is provided with a radially extending connecting hole, and a bolt passes through the connecting hole from the outside to the inside and is threadedly connected to the connecting shaft; the bottom of the positioning groove is also provided with a recessed mounting groove. The mounting slot is used to install elastic components; When the elastic element is not subjected to external force, one end extends into the positioning groove; When the coupling engages with the positioning groove, the elastic element is compressed.

[0008] Furthermore, the elastic element is a spring or a disc spring.

[0009] Furthermore, the outer wall of the shaft is provided with an annular groove; The connection hole is located inside the groove.

[0010] Furthermore, the shaft is composed of a fixed connection part, a first rotating connection part, and a toothed part connected in sequence with decreasing diameter; A groove is provided in the fixed connection part; The first rotating connection part is used to install the first bearing; The first rotating connection part has an external thread at the end away from the fixed connection part, which is used to thread a retaining ring and press the first bearing.

[0011] Furthermore, the end of the tooth is coaxially connected to a second rotating connection part with a reduced diameter; The second rotating connection is used to install the second bearing; The second rotating connection part is also provided with an annular groove; The slot is used to engage the snap ring.

[0012] This utility model also provides a gear transmission, including a gear shaft fixed in multiple directions.

[0013] The beneficial effects of this invention are as follows: By setting an installation groove at the bottom of the positioning groove and installing an elastic element, the coupling automatically compresses the elastic element after being assembled into the positioning groove, generating a continuous axial preload. This preload causes radial pressure between the bolt and the coupling / gear shaft. This pressure is perpendicular to the axial tightening force of the bolt, thus achieving thread locking. Even under dynamic loads caused by vibration and impact, the stability of the thread lock can be maintained, preventing loosening and effectively improving vibration resistance. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 yes Figure 2 Sectional view of AA; In the figure: 1. Shaft; 2. Positioning groove; 3. Connecting hole; 4. Mounting groove; 5. Groove; 6. External thread; 11. Fixed connection part; 12. First rotating connection part; 13. Tooth part; 14. Second rotating connection part; 15. Slot; 16. Raised ring. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] like Figure 1-3 As shown, and with Figure 3 For reference, this utility model discloses a gear shaft that is fixed in multiple directions, including a shaft body 1. The shaft body 1 is composed of a fixed connecting part 11, a convex ring 16, a first rotating connecting part 12, a tooth part 13 and a second rotating connecting part 14 connected sequentially from left to right with decreasing diameter.

[0018] The left end of the shaft 1 is provided with a recessed circular positioning groove 2 for fitting the connecting shaft and realizing the installation and positioning of the shaft 1. The fixed connection part 11 is provided with multiple evenly distributed connecting holes 3 that penetrate the inner and outer sides. The bolt passes through the connecting holes 3 from the outside to the inside and is threadedly connected to the connecting shaft to realize the installation and fixation of the shaft 1 and the connecting shaft.

[0019] The bottom of the positioning groove 2 is provided with a coaxially connected, recessed mounting groove 4. The mounting groove 4 is used to install an elastic element, which can be a spring or a disc spring, selected according to the model of the gear shaft and the working intensity.

[0020] The outer wall of the fixed connection part 11 is provided with an annular groove 5, and the connection hole 3 is located at the bottom of the groove 5. The groove 5 is used to hide the head of the bolt, so as to prevent the head of the bolt from protruding radially from the gear shaft and obstructing the installation of other parts.

[0021] The first rotating connecting part 12 is used to install the first bearing. An external thread 6 is provided at the end of the first rotating connecting part 12 away from the fixed connecting part 11 for threaded connection of a retaining ring and to press the first bearing. The two ends of the first bearing abut against the convex ring 16 and the retaining ring respectively, achieving installation limitation of the first bearing. The diameters of the convex ring 16 and the retaining ring are smaller than the diameter of the outer ring of the first bearing, so that neither the convex ring 16 nor the retaining ring contacts the outer ring of the first bearing. The first bearing is used to support the middle position of the gear shaft to improve the positional stability of the gear shaft.

[0022] The teeth 13 are used to mesh with adjacent gears to achieve the purpose of transmission.

[0023] The second rotating connecting part 14 is used to install the second bearing; the second rotating connecting part 14 is also provided with an annular retaining groove 15; the retaining groove 15 is used to engage a retaining ring. The two ends of the second bearing abut against the toothed part 13 and the retaining ring respectively, achieving installation positioning. The diameter of the toothed part 13 is smaller than the diameter of the outer ring of the second bearing, so that the toothed part 13 does not contact the outer ring of the second bearing. The second bearing supports the right end of the gear shaft to improve the positional stability of the gear shaft.

[0024] Compared to existing technologies, the advantages of this embodiment are: by setting an installation groove 4 at the bottom of the positioning groove 2 and installing an elastic element, the coupling automatically compresses the elastic element after being assembled into the positioning groove 2, generating a continuous axial preload. This preload causes radial pressure between the bolt and the coupling / gear shaft. This pressure is perpendicular to the axial tightening force of the bolt, thus achieving thread locking. Even under dynamic loads caused by vibration and impact, the stability of the thread lock can be maintained, preventing loosening and effectively improving vibration resistance.

[0025] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-directional fixed gear shaft, comprising a shaft body (1), one end of which is provided with an axially recessed positioning groove (2) for connecting a connecting shaft; the portion of the shaft body (1) located in the positioning groove (2) is provided with a radially extending connecting hole (3), and a bolt passes through the connecting hole (3) from the outside to the inside and is threadedly connected to the connecting shaft, characterized in that: The bottom of the positioning groove (2) is also provided with a recessed mounting groove (4). The mounting slot (4) is used to install elastic elements; When the elastic element is not subjected to external force, one end of it extends into the positioning groove (2); When the connecting shaft engages with the positioning groove (2), the elastic element is compressed.

2. The gear shaft with multi-directional fixation according to claim 1, characterized in that: The elastic element is a spring or a disc spring.

3. A multi-directional fixed gear shaft according to claim 1, characterized in that: The outer wall of the shaft (1) is provided with an annular groove (5). The connecting hole (3) is located inside the groove (5).

4. A multi-directional fixed gear shaft according to claim 3, characterized in that: The shaft (1) is composed of a fixed connecting part (11), a first rotating connecting part (12) and a toothed part (13) connected in sequence with decreasing diameter; The groove (5) is provided on the fixed connection part (11); The first rotating connection part (12) is used to install the first bearing; The first rotating connection part (12) has an external thread (6) at the end away from the fixed connection part (11) for threaded connection of the retaining ring and pressing the first bearing.

5. A gear shaft with multi-directional fixation according to claim 4, characterized in that: The end of the toothed part (13) is also coaxially connected to a second rotating connection part (14) with a reduced diameter. The second rotating connection (14) is used to install the second bearing; The second rotating connecting part (14) is also provided with an annular groove (15); The slot (15) is used to engage the snap ring.

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