High-strength wear-resistant spline shaft

Abstract

The utility model relates to the technical field of spline shafts, in particular to a high-strength wear-resistant spline shaft which comprises a spline rod, a connecting column is fixedly welded to the left side of the spline rod, straight notches are formed in the front side and the rear side of the connecting column, and a fixing column is fixedly welded to the right side of the spline rod. The spline shaft solves the problems that an existing spline shaft is generally of a fixed structure, the spline shaft needs to be matched with a fixed size when being connected with a transmission part, the spline shaft needs to be integrally replaced according to different transmission parts, the use cost is high, and the service life is long. The problems that in the transmission process, lubricating oil needs to be manually added for lubrication at regular intervals, and shutdown work needs to be conducted in the adding process are solved, the spline head can be stably fixed, only the spline head needs to be replaced when replacement is needed, overall replacement is not needed, cost is saved, the operation difficulty of workers is lowered, and the overall structure is high in strength and resistant to abrasion.

Description

Technical Field

[0001] The utility model relates to the technical field of spline shafts, and particularly relates to a high-strength and wear-resistant spline shaft. Background Technique

[0002] A spline shaft is a common mechanical transmission component. It is connected to transmission components such as gears and synchronizers through splines, has high strength and stiffness, and can withstand large torques and loads. Spline shafts usually use high-quality carbon steel or alloy steel as materials and are subjected to heat treatment and surface treatment to improve their wear resistance and fatigue resistance.

[0003] Currently, spline shafts are usually of a fixed structure and need to be matched with fixed dimensions when connecting to transmission components. For different transmission components, the spline shafts need to be replaced as a whole, resulting in a high usage cost. Moreover, during the transmission process, lubricating oil needs to be manually added regularly, and the machine needs to be stopped during the addition process, which is also somewhat dangerous and difficult to operate. To solve the above technical problems, we have designed a high-strength and wear-resistant spline shaft. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-strength and wear-resistant spline shaft, which has the advantages of convenient replacement and automatic lubrication, and solves the problems that currently, spline shafts are usually of a fixed structure and need to be matched with fixed dimensions when connecting to transmission components. For different transmission components, the spline shafts need to be replaced as a whole, resulting in a high usage cost, and during the transmission process, lubricating oil needs to be manually added regularly, and the machine needs to be stopped during the addition process.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-strength and wear-resistant spline shaft, including a spline rod. A connecting column is fixedly welded to the left side of the spline rod. Straight slots are opened on both the front and rear sides of the connecting column. A fixing column is fixedly welded to the right side of the spline rod. A slot is opened on the right side of the fixing column. A key head assembly is installed inside the slot. The key head assembly includes a spline head. An insertion block is fixedly welded to the left side of the spline head. A fastening bolt is installed through the right side surface of the fixing column. A fastening nut is threadedly sleeved on the rear side surface of the fastening bolt. Oil supply assemblies are fixedly installed on both the top and bottom of the fixing column. The oil supply assemblies include oil boxes, oil valves, and oil outlet pipes.

[0006] Preferably, a positioning hole is opened through the front side of the insertion block, and the inner wall of the positioning hole is in sliding contact with the surface of the fastening bolt.

[0007] Preferably, bolt slots are opened on both the front and rear sides of the right side of the fixing column. The fastening nut is disposed through the inner cavity of the bolt slot, and the rear side of the fastening nut sequentially passes through the fixing column and the insertion block and extends to the rear side of the fixing column.

[0008] Preferably, mounting grooves are formed at both the top and bottom of the fixing column, the oil box is disposed in the inner cavity of the mounting groove, and mounting plates are fixedly connected to both the front and rear sides of the oil box.

[0009] Preferably, screws are disposed through the surface of the mounting plate, and one end of the screw penetrates through the mounting plate and is threadedly connected to the surface of the fixing column.

[0010] Preferably, an oil injection pipe is disposed on the right side of the surface of the oil box, the oil outlet pipe communicates with the right side of the oil box, the oil valve is fixedly installed on the surface of the oil outlet pipe, and the oil outlet end of the oil outlet pipe faces the spline head.

[0011] Preferably, the inner side of the slot is of a rectangular structure and is adapted to the size of the insert block, and the outer side of the slot is of a circular structure and is adapted to the size of the spline head.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, the insert block is fixed inside the slot by the fastening bolt and the fastening nut, so that the spline head can be stably fixed. When replacement is needed, only the spline head needs to be replaced, and there is no need to replace the whole, which saves costs and reduces the operation difficulty of the staff.

[0014] 2. In the present utility model, the lubricating oil is stored in the oil box. During the rotation of the spline shaft, the oil valve can be opened, so that the lubricating oil inside the oil box is discharged from the oil storage tank to the surface of the spline head, so that it can be automatically lubricated when meshing with the transmission component, saving the time of manually adding lubricating oil and eliminating the need for manual operation, thus improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0016] Figure 2 is a bottom three-dimensional structural diagram of the present utility model;

[0017] Figure 3 is a partial structural exploded three-dimensional diagram of the present utility model.

[0018] In the figure: 1, spline rod; 2, straight slot; 3, connecting column; 4, fixing column; 5, oil supply assembly; 51, oil box; 52, mounting plate; 53, oil injection pipe; 54, oil valve; 55, oil outlet pipe; 6, key head assembly; 61, spline head; 62, positioning hole; 63, insert block; 7, mounting groove; 8, bolt groove; 9, fastening bolt; 10, fastening nut; 11, slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Please refer toFigures 1 - 3 , a high-strength wear-resistant spline shaft, comprising a spline rod 1. A connecting column 3 is fixedly welded to the left side of the spline rod 1. Straight notch openings 2 are provided on both the front and rear sides of the connecting column 3. By providing the straight notch openings 2, it is convenient to install the connecting column 3 at the required position to achieve the installation of the spline shaft. A fixing column 4 is fixedly welded to the right side of the spline rod 1. A slot 11 is provided on the right side of the fixing column 4. A key head assembly 6 is installed inside the slot 11. The key head assembly 6 includes a spline head 61. A plug 63 is fixedly welded to the left side of the spline head 61. By providing the plug 63, it is convenient to insert it into the slot 11 to fix the spline head 61, and the spline head 61 can be disassembled by removing the fastening bolt 9 and the fastening nut 10 to achieve the effect of convenient replacement. A fastening bolt 9 is installed through the right side of the surface of the fixing column 4. A fastening nut 10 is threadedly sleeved on the rear side of the surface of the fastening bolt 9. Oil supply assemblies 5 are fixedly installed on both the top and bottom of the fixing column 4. The oil supply assemblies 5 include an oil box 51, an oil valve 54, and an oil outlet pipe 55;

[0020] Please refer to Figure 3 , a positioning hole 62 is provided through the front side of the plug 63. The inner wall of the positioning hole 62 is in sliding contact with the surface of the fastening bolt 9. By providing the positioning hole 62, the fastening bolt 9 can penetrate into the plug 63 for positioning, and the inner wall of the positioning hole 62 contacts the surface of the fastening bolt 9, so that the plug 63 will not shake after installation;

[0021] Please refer to Figure 3 , bolt grooves 8 are provided on the right sides of both the front and rear sides of the fixing column 4. The fastening nut 10 is disposed through the inner cavity of the bolt groove 8. The rear side of the fastening nut 10 sequentially penetrates through the fixing column 4 and the plug 63 and extends to the rear side of the fixing column 4;

[0022] Please refer to Figure 3 , installation grooves 7 are provided on both the top and bottom of the fixing column 4. The oil box 51 is disposed in the inner cavity of the installation groove 7. Installation plates 52 are fixedly connected to both the front and rear sides of the oil box 51;

[0023] Please refer to Figure 1 , Figure 2 and Figure 3 , screws are disposed through the surfaces of the installation plates 52. By providing the screws, the installation plates 52 can be fixed on the surface of the fixing column 4 to achieve the disassembly and assembly of the oil box 51. One end of the screw penetrates through the installation plate 52 and is threadedly connected to the surface of the fixing column 4;

[0024] Please refer to Figure 1 and Figure 3An oil filling pipe 53 is provided on the right side of the surface of the oil box 51. By providing the oil filling pipe 53, the lubricating oil can be easily injected into the oil box 51, so as to replenish the lubricating oil in the oil box 51 in time. The oil outlet pipe 55 is connected to the right side of the oil box 51. The oil valve 54 is fixedly installed on the surface of the oil outlet pipe 55. The oil outlet end of the oil outlet pipe 55 faces the spline head 61. The oil valve 54 is a rechargeable structure, which can be charged and controlled by an external wireless controller.

[0025] See also Figure 3 , the inner side of the slot 11 is a rectangular structure and is adapted to the size of the insert block 63 , and the outer side of the slot 11 is a circular structure and is adapted to the size of the spline head 61 ;

[0026] The spline rod 1, the connecting column 3, the fixing column 4, the spline head 61 and the insert block 63 are all made of 080A47 carbon structural steel, which has high strength and high toughness, and also has good wear resistance, and is suitable for manufacturing parts subject to wear, such as rotating shafts, spindles, crankshafts, spline shafts, etc.

[0027] When in use, place the spline head 61 of the required model connecting the plug block 63 at the slot 11, insert the plug block 63 into the slot 11, align the positioning hole 62 with the bolt slot 8, and then insert the fastening bolt 9 into the bolt slot 8, pass the fastening bolt 9 through the positioning hole 62 and out from the bolt slot 8 on the other side, and then screw on the fastening nut 10 to fix it. When the spline head 61 needs to be lubricated, open the oil valve 54 to allow the lubricating oil inside the oil box 51 to be discharged from the oil outlet pipe 55 to the surface of the spline head 61, so that it can be automatically lubricated when it engages with the transmission component. When disassembly is required, only the spline head 61 needs to be disassembled and replaced.

[0028] To sum up: the high-strength and wear-resistant spline shaft, through the coordination of the spline rod 1, the fixed column 4, the oil supply assembly 5, the key head assembly 6, the mounting groove 7, the bolt groove 8, the fastening bolt 9, the fastening nut 10 and the slot 11, solves the problem that the current spline shaft is usually a fixed structure, which requires a fixed size to match when connected with the transmission component, and the spline shaft needs to be replaced as a whole for different transmission components, which has a high cost of use, and lubricating oil needs to be manually added regularly during the transmission process, and the machine needs to be stopped during the adding process.

Claims

1. A high-strength and wear-resistant spline shaft, comprising a spline rod (1), characterized in that: A connecting column (3) is fixedly welded to the left side of the spline rod (1). Straight grooves (2) are formed on both the front and rear sides of the connecting column (3). A fixing column (4) is fixedly welded to the right side of the spline rod (1). A slot (11) is formed on the right side of the fixing column (4). A key head assembly (6) is installed inside the slot (11). The key head assembly (6) includes a spline head (61). An insertion block (63) is fixedly welded to the left side of the spline head (61). A fastening bolt (9) is installed through the right side surface of the fixing column (4). A fastening nut (10) is threadedly sleeved on the rear side surface of the fastening bolt (9). Oil supply assemblies (5) are fixedly installed on both the top and bottom of the fixing column (4). The oil supply assemblies (5) include an oil box (51), an oil valve (54), and an oil outlet pipe (55).

2. A high-strength and wear-resistant spline shaft according to claim 1, characterized in that: A positioning hole (62) is formed through the front side of the insertion block (63). The inner wall of the positioning hole (62) is in sliding contact with the surface of the fastening bolt (9).

3. A high-strength and wear-resistant spline shaft according to claim 1, characterized in that: Bolt grooves (8) are formed on the right sides of both the front and rear sides of the fixing column (4). The fastening nut (10) is disposed through the inner cavity of the bolt groove (8). The rear side of the fastening nut (10) sequentially passes through the fixing column (4) and the insertion block (63) and extends to the rear side of the fixing column (4).

4. A high-strength and wear-resistant spline shaft according to claim 1, characterized in that: Installation grooves (7) are formed on both the top and bottom of the fixing column (4). The oil box (51) is disposed in the inner cavity of the installation groove (7). Mounting plates (52) are fixedly connected to both the front and rear sides of the oil box (51).

5. The spline shaft with high strength and wear resistance according to claim 4, characterized in that: A screw is disposed through the surface of the mounting plate (52). One end of the screw passes through the mounting plate (52) and is threadedly connected to the surface of the fixing column (4).

6. The spline shaft with high strength and wear resistance according to claim 4, wherein: An oil injection pipe (53) is disposed on the right side surface of the oil box (51). The oil outlet pipe (55) communicates with the right side of the oil box (51). The oil valve (54) is fixedly installed on the surface of the oil outlet pipe (55). The oil outlet end of the oil outlet pipe (55) faces the spline head (61).

7. The high-strength and wear-resistant spline shaft according to claim 1, wherein: The inner side of the slot (11) is of a rectangular structure and is adapted to the size of the insertion block (63). The outer side of the slot (11) is of a circular structure and is adapted to the size of the spline head (61).

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