Coupler heavy load cross shaft

Abstract

The utility model discloses a coupler heavy load cross shaft which comprises a main body seat, multiple ends of the main body seat are fixedly connected with sub shafts, the outer walls of the sub shafts are sleeved with first inner bearings, the outer walls of the first inner bearings are sleeved with shaft sleeves, one ends of the shaft sleeves are connected with second inner bearings in an embedded mode, and supporting columns are inserted into the second inner bearings. A connecting hole is formed in one end of the sub-shaft, the supporting column is connected with the connecting hole in an inserted mode, a connecting screw is connected between the supporting column and one end of the sub-shaft in a threaded and inserted mode, and an oil inlet hole is formed in the bottom of the shaft sleeve. The supporting columns are connected with the connecting holes in an inserted mode, then the connecting screws are screwed to fix the supporting columns and the sub-shafts, and therefore one end of the shaft sleeve is supported, a bearing is stably supported, and inclination deformation of one end of the shaft sleeve is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coupling cross shafts, in particular to a coupling heavy-load cross shaft. Background Art

[0002] Currently, when a coupling is used, a supporting structure is added to the cross shaft to improve the heavy-load capacity of the cross shaft.

[0003] Among them, after searching, the Chinese patent with the announcement number CN208831528U discloses a universal coupling with a heavy-loaded cross shaft without a needle roller. The above patent realizes the heavy-load function of the cross shaft with a structural scheme in which the sleeve is directly rotated and sleeved on the surface of the sub-shaft. However, since the sleeve is a hollow structure and one end of the sleeve has no support, when the sleeve is subjected to a heavy load, one end of the sleeve is prone to tilt and deformation. Therefore, in order to advance the technology of the industry, better realize the heavy-load function of the cross shaft, and improve the competitiveness of core technology, this application proposes a new implementation scheme that is different from the cross shaft structure in the prior art. Utility Model Content

[0004] The utility model aims to solve the problem that in the use of the existing cross shaft, because the shaft sleeve is a hollow structure and one end of the shaft sleeve has no support, one end of the shaft sleeve is easy to tilt and deform when subjected to heavy load, and proposes a coupling heavy-load cross shaft.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A coupling heavy-loaded cross shaft comprises a main body seat, multiple ends of the main body seat are fixedly connected to sub-shafts, the outer wall of the sub-shaft is sleeved with a first inner bearing, the outer wall of the first inner bearing is sleeved with a shaft sleeve, one end of the shaft sleeve is embedded with a second inner bearing, a support column is inserted into the second inner bearing, one end of the sub-shaft is provided with a connecting hole, and the support column is inserted into the connecting hole.

[0007] Furthermore, a connecting screw is threadedly inserted between the support column and one end of the sub-shaft.

[0008] Furthermore, an oil inlet hole is provided at the bottom of the shaft sleeve.

[0009] Furthermore, a sealing plug is inserted into the oil inlet hole.

[0010] Furthermore, a limit disk is sleeved on the circumferential outer wall of the sub-shaft.

[0011] Furthermore, an outer bearing is sleeved on the circumferential outer wall of the shaft sleeve, and the circumferential outer wall of the outer bearing is fixedly connected to the circumferential inner wall of the limiting plate.

[0012] Furthermore, a supporting rib is fixedly connected between the main body seat and the sub-shaft.

[0013] The beneficial effects of the utility model are:

[0014] 1. By plugging the support column into the connecting hole and then tightening the connecting screws to fix the support column and the sub-shaft, one end of the sleeve is supported, and then the bearing is stably supported, thereby avoiding tilting and deformation of one end of the sleeve.

[0015] 2. Remove the sealing plug and inject lubricating oil into the gap between the sleeve and the sub-shaft from the oil inlet hole, so that the cross shaft can operate flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a heavy-duty cross shaft of a coupling proposed by the utility model;

[0017] Figure 2 It is a partial cross-sectional structural schematic diagram of a coupling heavy-duty cross shaft proposed by the utility model;

[0018] Figure 3 The utility model is a partial exploded cross-sectional structural schematic diagram of a coupling heavy-duty cross shaft.

[0019] In the figure: 1. main seat; 2. sub-shaft; 3. first inner bearing; 4. bushing; 5. second inner bearing; 6. support column; 7. connecting hole; 8. connecting screw; 9. oil inlet hole; 10. sealing plug; 11. limit plate; 12. outer bearing; 13. support rib. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 3 A coupling heavy-duty cross shaft comprises a main body seat 1, and sub-shafts 2 are welded to multiple ends of the main body seat 1. A first inner bearing 3 is sleeved on the outer wall of the sub-shaft 2, and a sleeve 4 is sleeved on the outer wall of the first inner bearing 3. A second inner bearing 5 is embedded in one end of the sleeve 4, and a support column 6 is inserted in the second inner bearing 5. A connecting hole 7 is provided at one end of the sub-shaft 2, and the support column 6 is inserted into the connecting hole 7. A connecting screw 8 is threadedly inserted between the support column 6 and one end of the sub-shaft 2. The support column 6 is inserted into the connecting hole 7, and the connecting screw 8 is tightened to fix the support column 6 and the sub-shaft 2, thereby stably supporting the sleeve 4.

[0022] An oil inlet hole 9 is provided at the bottom of the sleeve 4, and a sealing plug 10 is inserted into the oil inlet hole 9. After the sealing plug 10 is pulled out, the lubricating oil is injected into the gap between the sleeve 4 and the sub-shaft 2 from the oil inlet hole 9, so that the cross shaft can operate flexibly. The circumferential outer wall of the sub-shaft 2 is sleeved with a limit plate 11, and the circumferential outer wall of the sleeve 4 is sleeved with an outer bearing 12. The sleeve 4 is supported by the first inner bearing 3 and the outer bearing 12. The circumferential outer wall of the outer bearing 12 is fixedly connected to the circumferential inner wall of the limit plate 11, and a supporting rib 13 is welded between the main seat 1 and the sub-shaft 2.

[0023] The working principle of this embodiment: when in use, first, the shaft sleeve 4 is supported by the first inner bearing 3 and the outer bearing 12, and then, the support column 6 is connected to the connecting hole 7, and then the connecting screws 8 are tightened to fix the support column 6 and the sub-shaft 2, so as to stably support the shaft sleeve 4, and then the sealing plug 10 is pulled out, and the lubricating oil is injected into the gap between the shaft sleeve 4 and the sub-shaft 2 from the oil inlet hole 9, so that the cross shaft can operate flexibly.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coupling heavy-duty cross shaft, comprising a main body seat (1), characterized in that: Multiple ends of the main body seat (1) are fixedly connected to a sub-shaft (2); a first inner bearing (3) is sleeved on the outer wall of the sub-shaft (2); a shaft sleeve (4) is sleeved on the outer wall of the first inner bearing (3); a second inner bearing (5) is embedded at one end of the shaft sleeve (4); a support column (6) is inserted into the second inner bearing (5); a connecting hole (7) is provided at one end of the sub-shaft (2); and the support column (6) is inserted into the connecting hole (7).

2. A coupling heavy-duty cross shaft according to claim 1, characterized in that: A connecting screw (8) is threadedly inserted between the support column (6) and one end of the sub-shaft (2).

3. The coupling heavy-duty cross shaft according to claim 1, characterized in that: The bottom of the shaft sleeve (4) is provided with an oil inlet hole (9).

4. A coupling heavy-duty cross shaft according to claim 3, characterized in that: A sealing plug (10) is inserted into the oil inlet hole (9).

5. The coupling heavy-duty cross shaft according to claim 1, characterized in that: The circumferential outer wall of the sub-shaft (2) is sleeved with a limit plate (11).

6. A coupling heavy-duty cross shaft according to claim 5, characterized in that: The outer circumferential wall of the shaft sleeve (4) is sleeved with an outer bearing (12), and the outer circumferential wall of the outer bearing (12) is fixedly connected to the inner circumferential wall of the limiting plate (11).

7. The coupling heavy-duty cross shaft according to claim 1, characterized in that: A supporting rib (13) is fixedly connected between the main body seat (1) and the sub-shaft (2).

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