High-coaxiality gear shaft

Abstract

The utility model relates to the technical field of gear shafts, and discloses a high-coaxiality gear shaft which comprises a gear body, a fixing cylinder is fixedly connected to the outer wall of one side of the gear body, a limiting block is fixedly connected to the inner wall of the fixing cylinder, a shaft body is inserted into the fixing cylinder, a limiting groove is formed in the outer wall, facing the limiting block, of the shaft body, and the limiting block is fixedly connected with the limiting groove. The limiting blocks are clamped in the limiting grooves, and bolts are arranged on the two sides of the fixing cylinder in a penetrating mode and are in threaded connection with the shaft body. According to the technical scheme, the shaft body can be installed through the fixing cylinder, the limiting block is clamped in the limiting groove in the shaft body while the shaft body is inserted into the fixing cylinder, and then the fixing cylinder and the shaft rod are fixed through the bolt, so that the firmness and stability of assembly of the gear body and the shaft rod can be improved, and the service life of the gear body and the shaft rod is prolonged. And flexible disassembly can be achieved, only the damaged structure needs to be replaced, overall replacement is not needed, and waste of resources is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gear shafts, in particular to a gear shaft with high coaxiality. Background Art

[0002] A gear shaft refers to a mechanical part that supports a rotating part and rotates with it to transmit motion, torque or bending moment. It is usually in the shape of a metal round rod, and each section can have different diameters. The parts that perform rotating motion in the machine are installed on the shaft.

[0003] The patent document with the published announcement number CN219197878U discloses a gear shaft, including: a shaft body and a gear body, the gear body is provided with a shaft hole that is matched with the shaft body, the shaft body passes through the shaft hole and is welded and fixed to the gear body; a reinforcement block is provided between the gear body and the shaft body. The structure is novel, and the split design is adopted, which can be manufactured in batches. Compared with the integrally formed gear shaft, the manufacturing requirements are reduced, and the shaft body or the gear body can be replaced in advance if there are quality defects, which ensures the quality of the finished product after welding.

[0004] In actual use of the above patent, the shaft and the gear body need to be welded and fixed. When one of the shaft or the gear body is damaged, the entire device will be scrapped, which easily leads to a waste of resources. Therefore, a gear shaft with high coaxiality is needed. Utility Model Content

[0005] The utility model aims to provide a gear shaft with high coaxiality, which solves the problems raised in the background technology.

[0006] An embodiment of the present application provides a high coaxiality gear shaft, including a gear body, an outer wall of one side of the gear body is fixedly connected to a fixing cylinder, an inner wall of the fixing cylinder is fixedly connected to a limiting block, an axis body is inserted into the interior of the fixing cylinder, a limiting groove is provided on the outer wall of the axis body facing the limiting block, the limiting block is engaged with the inside of the limiting groove, bolts are passed through both sides of the fixing cylinder, and the bolts are threadedly connected to the axis body.

[0007] When in use, the shaft body can be inserted into the interior of the fixed cylinder to achieve the installation of the shaft body. When the shaft body is inserted into the interior of the fixed cylinder, the limit block is naturally engaged in the limit groove on the shaft body, and then the fixed cylinder and the shaft rod are fixed by bolts. This not only improves the firmness and stability of the assembly of the gear body and the shaft rod, but also allows for flexible disassembly. Only the damaged structure needs to be replaced without overall replacement, thus avoiding waste of resources.

[0008] Optionally, an outer wall of the shaft body on a side away from the gear body is provided with an external thread.

[0009] The adoption of the above technical solution is beneficial to improving the friction of the shaft and improving the assembly effect.

[0010] Optionally, the gear body and the shaft body are coaxially arranged.

[0011] The adoption of the above technical solution is beneficial to improving the coaxiality.

[0012] Optionally, the gear body and the fixing cylinder are an integrated structure.

[0013] The adoption of the above technical solution is helpful to improve the firmness of the connection between the gear body and the fixing cylinder and avoid breakage.

[0014] Optionally, a keyway is provided at the top of the shaft.

[0015] The adoption of the above technical solution is conducive to the assembly of the shaft body.

[0016] Optionally, a mounting circular hole is opened at the middle position of the fixing cylinder, and the diameter of the mounting circular hole on the fixing cylinder is matched with the diameter of the shaft body.

[0017] The adoption of the above technical solution is helpful to improve the stability of the shaft installation and avoid the occurrence of gaps.

[0018] Optionally, hidden grooves are provided on both side outer walls of the fixing tube, and the bolts are located inside the hidden grooves.

[0019] The adoption of the above technical solution is conducive to realizing the hidden installation of the bolts and avoiding affecting the normal use of the structure.

[0020] Optionally, a hexagonal notch is formed on an end surface of the bolt away from the screw rod.

[0021] The adoption of the technical solution is conducive to flexible disassembly and assembly of the bolts.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The technical solution of the present application can realize the installation of the shaft body through the fixing cylinder, and when the shaft body is inserted into the fixing cylinder, the limit block is naturally engaged in the limit groove on the shaft body, and then the fixing cylinder and the shaft rod are fixed by bolts. This not only can improve the firmness and stability of the assembly of the gear body and the shaft rod, but also can be flexibly disassembled. Only the damaged structure needs to be replaced, and there is no need to replace the entire structure, thus avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of a high coaxiality gear shaft of the utility model;

[0026] Figure 2 It is a side view structural schematic diagram of a high coaxiality gear shaft of the utility model;

[0027] Figure 3 This is a schematic diagram of the split structure of the gear body and the shaft body of a high coaxiality gear shaft of the utility model;

[0028] Figure 4 It is an enlarged schematic diagram of the A region structure of a high coaxiality gear shaft of the utility model.

[0029] In the figure: 1. gear body; 2. fixing cylinder; 3. shaft body; 4. external thread; 5. keyway; 6. bolt; 7. hidden groove; 8. limit block; 9. limit groove; 10. hexagonal notch. DETAILED DESCRIPTION

[0030] See also Figure 1-4 The utility model provides a technical solution: a high coaxiality gear shaft, including a gear body 1, a fixed cylinder 2 is fixedly connected to the outer wall of one side of the gear body 1, a limiting block 8 is fixedly connected to the inner wall of the fixed cylinder 2, a shaft body 3 is inserted into the interior of the fixed cylinder 2, a limiting groove 9 is provided on the outer wall of the shaft body 3 facing the limiting block 8, the limiting block 8 is engaged with the inside of the limiting groove 9, bolts 6 are penetrated on both sides of the fixed cylinder 2, and the bolts 6 are threadedly connected to the shaft body 3.

[0031] In the technical solution of the utility model, if Figure 1 and Figure 2 As shown, an outer wall of the shaft body 3 away from the gear body 1 is provided with an external thread 4, which is beneficial to improving the friction of the shaft body 3 and improving the assembly effect.

[0032] In the technical solution of the utility model, if Figure 1 As shown, the gear body 1 and the shaft body 3 are coaxially arranged, which is beneficial to improving the coaxiality.

[0033] In the technical solution of the utility model, if Figure 1 and Figure 2 As shown, the gear body 1 and the fixing cylinder 2 are an integrated structure, which is beneficial to improve the firmness of the connection between the gear body 1 and the fixing cylinder 2 and avoid breakage.

[0034] In the technical solution of the utility model, if Figure 1 As shown, a keyway 5 is provided at the top of the shaft body 3 , which is beneficial for the assembly of the shaft body 3 .

[0035] In the technical solution of the utility model, if Figure 3 As shown, a mounting circular hole is opened in the middle of the fixing cylinder 2, and the diameter of the mounting circular hole on the fixing cylinder 2 is matched with the diameter of the shaft body 3; this is beneficial to improving the stability of the installation of the shaft body 3 and avoiding the occurrence of gaps.

[0036] In the technical solution of the utility model, if Figure 3 and Figure 4 As shown, hidden grooves 7 are provided on both side outer walls of the fixing tube 2, and the bolts 6 are located inside the hidden grooves 7; this is conducive to realizing the hidden installation of the bolts 6 and avoiding affecting the normal use of the structure.

[0037] In the technical solution of the utility model, if Figure 4 As shown, a hexagonal notch 10 is provided on one end face of the bolt 6 away from the screw rod, which is conducive to flexible disassembly and assembly of the bolt 6 .

[0038] When in use, the shaft body 3 can be inserted into the interior of the fixed cylinder 2 to achieve the installation of the shaft body 3. When the shaft body 3 is inserted into the interior of the fixed cylinder 2, the limit block 8 is naturally engaged in the limit groove 9 on the shaft body 3, and then the fixed cylinder 2 and the shaft rod 3 are fixed by the bolt 6. This not only improves the firmness and stability of the assembly of the gear body 1 and the shaft rod 3, but also allows for flexible disassembly. Only the damaged structure needs to be replaced, and there is no need to replace the entire structure, thus avoiding waste of resources.

[0039] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gear shaft with high coaxiality, characterized in that: The invention comprises a gear body (1), a fixing cylinder (2) is fixedly connected to an outer wall of one side of the gear body (1), a limiting block (8) is fixedly connected to the inner wall of the fixing cylinder (2), a shaft body (3) is inserted into the interior of the fixing cylinder (2), a limiting groove (9) is provided on the outer wall of the shaft body (3) facing the limiting block (8), the limiting block (8) is engaged with the inside of the limiting groove (9), bolts (6) are passed through both sides of the fixing cylinder (2), and the bolts (6) are threadedly connected to the shaft body (3).

2. A high coaxiality gear shaft according to claim 1, characterized in that: An external thread (4) is provided on the outer wall of the shaft body (3) at a side away from the gear body (1).

3. The high coaxiality gear shaft according to claim 1, characterized in that: The gear body (1) and the shaft body (3) are coaxially arranged.

4. The high coaxiality gear shaft according to claim 1, characterized in that: The gear body (1) and the fixing cylinder (2) are an integrated structure.

5. The high coaxiality gear shaft according to claim 1, characterized in that: A keyway (5) is provided at the top end of the shaft body (3).

6. The high coaxiality gear shaft according to claim 1, characterized in that: A mounting circular hole is provided at the middle position of the fixing cylinder (2), and the diameter of the mounting circular hole on the fixing cylinder (2) is matched to the diameter of the shaft body (3).

7. The high coaxiality gear shaft according to claim 1, characterized in that: The outer walls on both sides of the fixing cylinder (2) are provided with hidden grooves (7), and the bolts (6) are located inside the hidden grooves (7).

8. The high coaxiality gear shaft according to claim 1, characterized in that: A hexagonal notch (10) is formed on an end surface of the bolt (6) away from the screw rod.

Images