Conical shaft mounting structure

Abstract

The utility model provides a conical shaft mounting structure, which relates to the technical field of engineering mechanical equipment and comprises a mounting plate, a base hole is formed in the mounting plate, a shaft sleeve is fixedly mounted in the base hole, a first inclined surface is arranged on the inner wall of the shaft sleeve, a conical shaft is mounted on the inner wall of the shaft sleeve, and a second inclined surface of the conical shaft is in contact with the first inclined surface. First threaded holes are formed in the two sides of the base hole, an end cover is arranged at the top end of the conical shaft, bolts penetrate through the end cover and correspond to the first threaded holes, the bolts are installed in the first threaded holes in an extending mode, and the service life of the frame hole is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of excavation machinery and equipment technology, specifically to a tapered shaft mounting structure. Background Technology

[0002] Construction machinery, such as excavators and loaders, requires extensive use of non-positioning articulated structures.

[0003] In the case of loaders, the non-positioning hinge is generally a tapered shaft directly connected to the frame hole. During long-term use, the tapered shaft is subjected to load, which causes wear between the tapered shaft and the frame hole. After long-term use, the frame hole deforms in the direction of the load. The deformed frame hole no longer has a supporting function. In order to ensure the normal operation of the equipment, the frame hole needs to be replaced. However, the bent and deformed frame hole cannot continue to be used. Therefore, it is necessary to cut off the entire frame hole and re-weld it. It can be seen that the existing tapered shaft mounting hole has the defect of short service life. Utility Model Content

[0004] To achieve the above objectives, one or more embodiments of this utility model provide the following technical solutions.

[0005] This utility model proposes a tapered shaft mounting structure, including a mounting plate with a base hole. A bushing is fixedly mounted in the base hole. A first inclined surface is formed on the inner wall of the bushing. A tapered shaft is mounted on the inner wall of the bushing. A second inclined surface of the tapered shaft contacts the first inclined surface. First threaded holes are formed on both sides of the base hole. An end cap is provided at the top of the tapered shaft. A bolt is mounted through the end cap and corresponding to the first threaded hole. The bolt extends and is installed in the first threaded hole.

[0006] A further configuration is that the mounting groove is formed circumferentially along the center of the base hole at the edge of the base hole, and the flange is formed circumferentially along the center of the bushing on the outer side wall of the bushing.

[0007] A further configuration is that the flange is disposed within the mounting groove, and the bottom wall of the flange contacts the bottom of the mounting groove.

[0008] A further modification involves placing a pad at the center of the end cap.

[0009] Further configuration involves installing fixing bolts through the pad and end cap.

[0010] A further provision is made that a gap is provided between the end cap and the mounting plate, the gap being a reserved space for wear displacement of the tapered shaft and bushing.

[0011] A further configuration is provided, wherein a second threaded hole is provided on the end cap and corresponding to the first threaded hole.

[0012] Further configured, the end cap is disc-shaped, and the diameter of the end cap is larger than the diameter of the tapered shaft.

[0013] Further configured, the outer wall of the bushing contacts the inner wall of the base hole, and the bushing is pressed into the base hole by the tapered shaft.

[0014] Further configured, the top end of the tapered shaft contacts the bottom end of the end cap, and the end cap is pressed onto the top end of the tapered shaft by the cooperation of the bolt and the second threaded hole.

[0015] The beneficial effects of one or more of the above technical solutions:

[0016] The tapered shaft and tapered bushing are used together. The tapered shaft presses the tapered bushing into the frame hole. The tapered shaft is connected to the upper end cap bolt. There is a certain gap between the end cap and the upper surface of the frame hole. Due to the tapered surface of the tapered shaft and bushing, the tapered surfaces of the tapered shaft and bushing have a guiding effect on the tapered shaft. After wear, the tapered shaft and bushing will shift and automatically center under the action of the inclined surface. During periodic inspection, the end cap bolt is tightened to continue pressing the tapered bushing into the frame hole through the tapered shaft, which greatly improves the service life of the frame hole. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the bushing structure of this utility model.

[0020] In the diagram, 1 is the mounting plate; 11 is the base hole; 12 is the mounting groove; and 13 is the first threaded hole.

[0021] 2. Bushing; 21. Flange; 22. First inclined surface;

[0022] 3. Conical shaft; 31. Second inclined surface; 32. Stepped groove;

[0023] 4. End cap; 41. Second threaded hole; 42. Bolt; 43. Fixing bolt; 44. Spacer. Detailed Implementation

[0024] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0025] A tapered shaft mounting structure, as shown in the reference Figure 1The device includes a mounting plate 1, a base hole 11, a bushing 2 fixedly installed in the base hole 11, a first inclined surface 22 on the inner wall of the bushing 2, a tapered shaft 3 installed on the inner wall of the bushing 2, a second inclined surface 31 of the tapered shaft 3 contacting the first inclined surface 22, first threaded holes 13 on both sides of the base hole 11, an end cap 4 at the top of the tapered shaft 3, a bolt 42 installed through the end cap 4 and corresponding to the first threaded hole 13, and the bolt 42 extending into the first threaded hole 13.

[0026] The mounting groove 12 is circumferentially formed along the center of the base hole 11 at the edge of the base hole 11. The flange 21 is circumferentially formed along the center of the bushing 2 and forms the outer wall of the bushing 2. The flange 21 is set in the mounting groove 12 and the bottom wall of the flange 21 contacts the bottom of the mounting groove 12. The cooperation between the flange 21 and the mounting groove 12 ensures that the bushing 2 will not move along the base hole 11 when it is pressed downward.

[0027] A pad is set in the center of the end cover, and a fixing bolt 43 is set through the pad 44 and the end cover. The bottom end of the fixing bolt contacts the upper surface of the tapered shaft. The function of the pad and the fixing bolt is to connect the end cover and the shaft.

[0028] A gap is provided between the end cap 4 and the mounting plate 1. The gap is reserved space for the wear displacement of the tapered shaft 3 and the bushing 2. When wear occurs, the second inclined surface 31 and the first inclined surface 22 are subjected to the greatest force. After the second inclined surface 31 and the first inclined surface 22 are worn, their surfaces deform, and the tapered shaft 3 will move along the bushing 2. The inclined surface plays a guiding role, ensuring that the axis of the tapered shaft 3 and the bushing 2 are collinear, thereby preventing the tapered shaft 3 from shifting in the radial direction of the bushing 2 section, thus preventing the bushing 2 from deforming.

[0029] The end cap 4 is disc-shaped, and its diameter is larger than that of the conical shaft 3, ensuring that the end cap 4 can completely cover the conical shaft 3 and provide a uniform downward pressure to the conical shaft 3. The outer wall of the bushing 2 contacts the inner wall of the base hole 11, and the bushing 2 is pressed into the base hole 11 by the conical shaft 3.

[0030] A second threaded hole 41 is opened on the end cap 4 corresponding to the first threaded hole 13. The top end of the tapered shaft 3 contacts the bottom end of the end cap 4. Through the cooperation of the bolt 42 and the second threaded hole 41, the end cap 4 is pressed on the top end of the tapered shaft 3. When the second inclined surface 31 and the first inclined surface 22 are worn and deformed, the bolt 42 can be tightened so that the end cap 4 presses the tapered shaft 3 downward, thereby ensuring that the second inclined surface 31 contacts the first inclined surface 22.

[0031] The installation steps for tapered shaft 3 are as follows:

[0032] First, align the flange 21 of the bushing 2 and place it in the mounting groove 12. Then, put the tapered shaft 3 into the bushing 2, with the second inclined surface 31 contacting the first inclined surface 22. Then, place the end cap 4 on top of the tapered shaft 3, align the first threaded hole 13 and the second threaded hole 41, and tighten the bolt 42. At this time, the end cap 4 is pressed on the top of the tapered shaft 3.

[0033] When wear occurs between the tapered shaft 3 and the bushing 2:

[0034] The tapered shaft 3 presses the tapered bushing 2 into the frame hole. The tapered shaft 3 is connected to the upper end cap bolt 42. Due to the tapered surface of the tapered shaft 3 and bushing 2, the tapered surfaces of the tapered shaft 3 and bushing 2 have a guiding effect on the tapered shaft 3. After wear, the tapered shaft 3 and bushing 2 will be displaced. After wear, the tapered shaft 3 and bushing 2 will become loose. There is a certain gap between the end cap and the upper surface of the frame hole. Tighten the end cap bolt 42 and continue to press the tapered bushing 2 into the frame hole through the tapered shaft 3. The gap is reserved for adjustment space.

[0035] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A tapered shaft mounting structure, comprising a mounting plate having a base hole, characterized in that, A bushing is fixedly installed inside the base hole. A first inclined surface is formed on the inner wall of the bushing. A tapered shaft is installed on the inner wall of the bushing. A second inclined surface of the tapered shaft contacts the first inclined surface. First threaded holes are formed on both sides of the base hole. An end cap is provided at the top of the tapered shaft. A bolt is installed through the end cap and corresponding to the first threaded hole. The bolt extends and is installed inside the first threaded hole.

2. The tapered shaft mounting structure according to claim 1, characterized in that, The mounting groove is circumferentially opened at the edge of the base hole along the center of the base hole, and the flange is circumferentially set on the outer wall of the bushing along the center of the bushing.

3. The tapered shaft mounting structure according to claim 2, characterized in that, The flange is disposed in the mounting groove, and the bottom wall of the flange is in contact with the bottom of the mounting groove.

4. The tapered shaft mounting structure according to claim 1, characterized in that, A pad is placed in the center of the end cap.

5. The tapered shaft mounting structure according to claim 4, characterized in that, Fixing bolts are installed through the pad and end cap.

6. The tapered shaft mounting structure according to claim 1, characterized in that, A gap is provided between the end cap and the mounting plate.

7. The tapered shaft mounting structure according to claim 1, characterized in that, A second threaded hole is provided on the end cap and corresponding to the first threaded hole.

8. The tapered shaft mounting structure according to claim 1, characterized in that, The end cap is disc-shaped, and the diameter of the end cap is larger than the diameter of the tapered shaft.

9. The tapered shaft mounting structure according to claim 1, characterized in that, The outer wall of the bushing contacts the inner wall of the base hole.

10. A tapered shaft mounting structure according to claim 1, characterized in that, The top of the tapered shaft contacts the bottom of the end cap.

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