Gear oil filling pipe of rotary motor for excavator

Abstract

The utility model discloses a rotary motor gear oil filling pipe for an excavator, which belongs to the technical field of engineering machinery and comprises a first bent pipe, a first threaded section of the first bent pipe is in threaded connection with a second flat pipe, and the first bent pipe further comprises a first straight section and a bent transition section. The end, away from the second flat pipe, of the first straight section is rotationally connected with a hexagon nut. The first folding pipe is connected with a motor connector through a hexagon nut. According to the utility model, the first bent pipe and the second flat pipe are connected and fastened through the first threaded section to obtain a filling pipe inclined at a certain angle, then the motor joint is connected to a motor, and finally the filling pipe inclined at the certain angle is connected with the motor joint; therefore, the angle between the filling pipe and a national three-type rotary motor is adjusted, and the technical problems that in the prior art, the external inclination angle of a gear oil filling pipe of a Chinese three-type rotary motor is too large, dynamic interference exists between the gear oil filling pipe and a bucket rod small-cavity hose, and the bucket rod small-cavity hose is abraded are solved.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a rotary motor gear oil filling pipe for an excavator. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] At present, based on the needs of environmental protection, the current engineering machinery 20T excavator has been designed with the National IV model to reduce emission pollution. The National IV model has been designed with pipeline optimization to adapt to the new requirements, thereby changing the pipeline settings on both sides of the excavator's swing motor of the original National III model. However, the National IV model still uses the stock swing motor used by the original National III model.

[0004] The original National III 20T excavator has large and small bucket cavities on the left side of the swing motor, and large and small arm cavities on the right side. Now, after the pipeline optimization, the National IV model needs to set the small arm cavity and large bucket cavity on the left side of the swing motor, and the small bucket cavity and large arm cavity on the right side of the swing motor. Since the left side of the swing motor has less space than the right side, such as Figure 1 As shown, the angle of the existing National III rotary motor gear oil filling pipe is too large, resulting in dynamic interference between the National III rotary motor gear oil filling pipe and the small cavity hose of the boom. Long-term use will cause wear to the small cavity hose of the boom and cause quality problems. Utility Model Content

[0005] In view of the above problems, the utility model provides a gear oil filling pipe for a rotary motor for an excavator. The filling pipe is divided into two sections. By adjusting the angle between the filling pipe and the National III model rotary motor, as well as the direction angle between the filling pipes, the technical problem of dynamic interference between the China III model rotary motor and the small cavity hose of the dipper arm, causing wear on the small cavity hose of the dipper arm, is solved.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rotary motor gear oil filling pipe for an excavator includes a first folded pipe, a first threaded section of the first folded pipe is threadedly connected to a second flat pipe, the first folded pipe also includes a first straight section and a curved transition section, an end of the first straight section away from the second flat pipe is movably connected to a hexagonal nut; the first folded pipe is connected to a motor joint via the hexagonal nut.

[0008] Preferably, one end of the first straight section is fixedly connected to the curved transition section, and one end of the curved transition section away from the first straight section is fixedly connected to the first threaded section, and the first threaded section is provided with a first external thread; the angle between the first straight section and the curved transition section is an obtuse angle, and the angle between the curved transition section and the first threaded section is an obtuse angle.

[0009] Preferably, one end of the first straight section away from the curved transition section is rotatably connected to the inner wall of the hexagonal nut, the inner wall diameter of the hexagonal nut is larger than the outer wall diameter of the first straight section, and the inner wall of the hexagonal nut is provided with a second internal thread.

[0010] Preferably, the second flat tube consists of a second straight section and a breathing cap, one end of the second straight section is fixedly connected to the breathing cap, and the other end is provided with a first internal thread on the inner wall; the first internal thread matches the first external thread; the inner wall diameter of the second flat tube is equal to the outer wall diameter of the first folded tube.

[0011] Preferably, the motor connector consists of a truncated cone section, a raised portion, and a second threaded section, the bottom surface of the truncated cone section is fixedly connected to the raised portion, one end of the raised portion away from the truncated cone section is fixedly connected to the second threaded section, and the second threaded section is provided with a second external thread.

[0012] Preferably, the inner wall diameter of the second threaded section is exactly equal to the outer wall diameter of the first folded tube, and the second outer thread is matched with the second inner thread; the inner diameter of the hexagonal nut is matched with the outer diameter of the second threaded section.

[0013] Compared with the prior art, the utility model has the following advantages and positive effects:

[0014] The utility model connects and fastens the first folded tube and the second flat tube through the first threaded section to obtain a filling tube with a certain angle of inclination, connects the motor joint to the motor, and then puts one end of the first folded tube with a hexagonal nut into the inner wall of the second threaded section, and then adjusts the angle so that the inclination angle of the second flat tube of the filling tube is toward the motor joint, and finally tightens the hexagonal nut toward the direction of the second threaded section to complete the connection between the first folded tube and the motor joint; thereby realizing the angle adjustment between the filling tube and the National III model rotary motor, solving the technical problems in the prior art that the outer inclination angle of the gear oil filling tube of the National III rotary motor is too large, there is a dynamic interference with the small cavity hose of the dipper arm, and the small cavity hose of the dipper arm is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] Figure 1 It is a schematic diagram of a gear oil filling pipe of a swing motor in the prior art National III inventory;

[0017] Figure 2 It is a schematic diagram of a filling pipe of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of a filling pipe of an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of a motor connector according to an embodiment of the present utility model;

[0020] Figure 5 It is a schematic diagram of a filling pipe of an embodiment of the utility model connected to a swing motor of a National III stock;

[0021] In the figure:

[0022] 1-first folded tube, 11-first straight section, 12-curved transition section, 13-first threaded section, 14-hexagonal nut, 2-second flat tube, 21-second straight section, 22-breathing cap, 3-motor joint, 31-truncated cone section, 32-raised portion, 33-second threaded section. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0024] The utility model is described in detail below in conjunction with the accompanying drawings. The embodiment disclosed in this embodiment is a gear oil filling pipe for a rotary motor for an excavator. Figure 2 As shown, it includes a first folded tube 1, a second flat tube 2, and a motor connector 3. The first folded tube 1 includes a first straight section 11, one end of the first straight section 11 is fixedly connected to a curved transition section 12, one end of the curved transition section 12 away from the first straight section 11 is fixedly connected to a first threaded section 13, and the other end of the first straight section 11 is threadedly movably connected to a hexagonal nut 14. It can be understood that the first threaded section 13 is provided with a first external thread.

[0025] The included angle between the first straight section 11 and the curved transition section is an obtuse angle, and the included angle between the curved transition section and the first threaded section is an obtuse angle.

[0026] The connection between the hexagonal nut 14 and the first straight section 11 is as follows: Figure 3As shown, one end of the first straight section 11 away from the curved transition section 12 is integrally connected with one end of the inner wall of the hexagonal nut 14 by a threading process in the prior art. It can be understood that the diameter of the hexagonal nut 14 is larger than the diameter of the first straight section 11, and the hexagonal nut 14 can rotate relative to the first straight section 11, and the hexagonal nut 14 can move relative to the first straight section 11 while rotating. The end of the hexagonal nut 14 away from the first straight section 11 is provided with a second internal thread.

[0027] The second flat tube 2 is composed of a second straight section 21 and a breathing cap 22. One end of the second straight section 21 is fixedly connected to the breathing cap 22. A first internal thread is provided on the inner wall of the other end of the second straight section 21. It can be understood that the first internal thread of the second straight section 21 matches the first external thread of the first threaded section 13. The first threaded section 13 is screwed into the second flat tube 2 to realize the connection between the first folded tube 1 and the second flat tube 2.

[0028] It can be understood that the inner wall diameter of the second flat tube 2 is equal to the outer wall diameter of the first folded tube 1 .

[0029] like Figure 4 As shown, the motor connector 3 is composed of a truncated cone section 31, a raised portion 32, and a second threaded section 33, wherein the bottom surface of the truncated cone section 31 is fixedly connected to the raised portion 32, and the end of the raised portion 32 away from the truncated cone section 31 is fixedly connected to the second threaded section 33, and a second external thread is provided on the second threaded section 33. It can be understood that the bottom surface diameter of the truncated cone section 31 is larger than the top surface diameter thereof.

[0030] The inner wall diameter of the second threaded segment 33 is exactly equal to the outer wall diameter of the first folded tube 1. The second outer thread on the second threaded segment 33 is matched with the second inner thread of the hexagonal nut 14. The end of the first folded tube 1 with the hexagonal nut 14 is placed into the inner wall of the second threaded segment 33, and then the hexagonal nut 14 is tightened in the direction of the second threaded segment 33 to complete the connection between the first folded tube 1 and the motor connector 3.

[0031] It can be understood that the inner diameter of the hexagonal nut 14 matches the outer diameter of the second thread segment 33 .

[0032] Directions:

[0033] The first folded tube 1 is connected and fastened with the second flat tube 2 through the first threaded section 13 to obtain a filling tube with a certain angle of inclination, and then the truncated cone section 31 of the motor connector 3 is connected to the motor, and the end of the first folded tube 1 with the hexagonal nut 14 is placed into the inner wall of the second threaded section 33, and then the angle is adjusted so that the second flat tube 2 of the filling tube is inclined toward the motor connector 3, and finally the hexagonal nut 14 is tightened in the direction of the second threaded section 33 to complete the connection between the first folded tube 1 and the motor connector 3; Figure 5As shown, the utility model can ultimately achieve angle adjustment between the filling pipe and the National III model rotary motor, so that the filling pipe can be tilted toward the direction of the National III rotary motor, solving the technical problems in the prior art that the external inclination angle of the National III rotary motor gear oil filling pipe is too large, there is dynamic interference with the small cavity hose of the boom, and the small cavity hose of the boom is caused to wear.

[0034] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A gear oil filling pipe for a rotary motor for an excavator, characterized in that: It includes a first folded tube, a first threaded section of the first folded tube is threadedly connected to a second flat tube, the first folded tube also includes a first straight section and a curved transition section, an end of the first straight section away from the second flat tube is movably connected with a hexagonal nut; the first folded tube is connected to a motor joint via the hexagonal nut.

2. The gear oil filling pipe for a rotary motor for an excavator according to claim 1, characterized in that: One end of the first straight section is fixedly connected to the curved transition section, and one end of the curved transition section away from the first straight section is fixedly connected to the first threaded section, and the first threaded section is provided with a first external thread; the angle between the first straight section and the curved transition section is an obtuse angle, and the angle between the curved transition section and the first threaded section is an obtuse angle.

3. The gear oil filling pipe for a rotary motor for an excavator according to claim 1, characterized in that: One end of the first straight section away from the curved transition section is rotatably connected to one end of the inner wall of the hexagonal nut, the inner wall diameter of the hexagonal nut is larger than the outer wall diameter of the first straight section, and the end of the hexagonal nut away from the first straight section is provided with a second internal thread.

4. The gear oil filling pipe for a rotary motor for an excavator as claimed in claim 2, characterized in that: The second flat tube consists of a second straight section and a breathing cap, one end of the second straight section is fixedly connected to the breathing cap, and the other end is provided with a first internal thread on the inner wall; the first internal thread matches the first external thread; the inner wall diameter of the second flat tube is equal to the outer wall diameter of the first folded tube.

5. The gear oil filling pipe for a rotary motor for an excavator according to claim 1, characterized in that: The motor joint consists of a truncated cone section, a raised portion, and a second threaded section. The bottom surface of the truncated cone section is fixedly connected to the raised portion. One end of the raised portion away from the truncated cone section is fixedly connected to the second threaded section. The second threaded section is provided with a second external thread.

6. The gear oil filling pipe for a rotary motor for an excavator as claimed in claim 5, characterized in that: The inner wall diameter of the second threaded section is exactly equal to the outer wall diameter of the first folded tube, and the second outer thread is matched with the second inner thread; the inner diameter of the hexagonal nut is matched with the outer diameter of the second threaded section.

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