Split type rotary joint supporting device

Abstract

The utility model provides a split type rotary joint supporting device which comprises a first supporting sleeve and a second supporting sleeve, the first supporting sleeve is connected with the second supporting sleeve in a sleeved mode, the upper portion of the second supporting sleeve extends into the inner side of the first supporting sleeve, and the lower portion of the second supporting sleeve is connected with the first supporting sleeve in a sleeved mode. A first drainage structure is formed between the upper part of the second supporting sleeve and the inner side of the first supporting sleeve, and a second drainage structure is formed between the inner side of the second supporting sleeve and the shell of the motor, so that the drainage effect is enhanced due to the arrangement of the double-layer independent drainage structure; and water stored on the spindle motor on the lower layer is reduced to a great extent, so that the phenomenon of corrosion caused by the water stored on the spindle motor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary joint technical field, in particular to a split type rotary joint support device. BACKGROUND

[0002] Machine tool has turning center, machining center, column machining center, walking core machine, spark machining machine, horizontal numerical control borer etc., and is widely used in various purposes. Machine tool spindle must supply coolant or cutting fluid, to reduce the friction between cutting tool and workpiece, cool cutting tool and workpiece, benefit chip discharge. In order to supply coolant to these shafts, a rotary joint that can supply coolant to the rotating body smoothly is usually used.

[0003] Generally speaking, the rotary joint is a connecting device connecting the fixed pipe and the rotating rotor, which is used to supply coolant or cutting fluid to the rotating rotor. For example, the machine tool using rotating shaft, such as lathe, milling and grinding machine, cools the rotating shaft by making the coolant, cutting fluid and other fluids flow in the rotating shaft, or uses the rotating shaft as a channel for fluid flow. In this way, in order to pass the fluid in the rotating shaft, a rotary joint is needed, which connects the fixed pipe and the rotating body, and has a structure to prevent fluid leakage.

[0004] The existing rotary joint is usually a split type rotary joint, and its sealing support device is usually a single layer sealing structure, which is relatively simple in structure, and the single port drainage is easy to cause water accumulation at the bottom of the motor. However, when water-soluble cutting fluid penetrates, the water in the cutting fluid may cause the motor shell in contact with it to be electrically eroded, which may cause rust and continuous damage to the spindle motor. SUMMARY

[0005] Therefore, in order to solve at least one of the above problems, the utility model provides a split type rotary joint support device.

[0006] The utility model adopts the following scheme to realize:

[0007] The utility model provides a split type rotary joint support device for supporting and installing the rotary joint with fixed shaft and rotating shaft on the motor, which comprises a first support sleeve and a second support sleeve, the first support sleeve is used for being connected with the shell of the motor, the second support sleeve is used for installing the fixed shaft, the first support sleeve and the second support sleeve are mutually sleeved, the second support sleeve is arranged below the first support sleeve, the upper part of the second support sleeve extends into the inside of the first support sleeve, and the first drainage structure is formed between the upper part of the second support sleeve and the inside of the first support sleeve, the second drainage structure is formed between the inside of the second support sleeve and the shell of the motor.

[0008] Wherein, in one embodiment, the second support sleeve is provided with an upper extension and a first step portion, the inner wall of the first support sleeve abuts against the side surface of the first step portion, the platform portion of the first step portion forms the bottom surface of the first drainage structure, and the upper extension and the inner wall of the first support sleeve form the side wall of the first drainage structure.

[0009] Wherein, in one embodiment, the second support sleeve is further provided with a second step portion, and the lower end of the first support sleeve abuts against the platform portion of the second step portion.

[0010] Wherein, in one embodiment, the side wall of the first support sleeve is connected with a first fluid outlet, the first fluid outlet is communicated to the first drainage structure, the side wall of the second support sleeve is connected with a second fluid outlet, and the second fluid outlet is communicated to the second drainage structure.

[0011] Wherein, in one embodiment, the split rotary joint support device further comprises an auxiliary disc, an oil throwing disc is mounted on the shell of the motor, the auxiliary disc is used for being fixed on the oil throwing disc, and the auxiliary disc can cover the upper surface of the oil throwing disc.

[0012] Wherein, in one embodiment, the oil throwing disc and the auxiliary disc can be respectively used for supporting two ends of the rotary shaft.

[0013] Wherein, in one embodiment, the auxiliary disc comprises a disc portion and a cylinder portion, one end of the cylinder portion is connected with the disc portion, the other end is provided with a mounting hole, the mounting hole is used for cooperating with the upper part of the rotary shaft, and the lower part of the rotary shaft is supported on the oil throwing disc.

[0014] Wherein, in one embodiment, a sealing groove is formed in the side wall of the mounting hole, and the sealing groove is used for mounting a sealing member.

[0015] Wherein, in one embodiment, the upper end of the auxiliary disc is not lower than the upper end of the upper extension of the second support sleeve.

[0016] Through the technical scheme provided by the utility model, the following technical effects are achieved:

[0017] 1. The utility model provides a split type swivel joint support device, split type swivel joint support device includes first support cover and second support cover, first support cover with second support cover each other cover, the upper portion of second support cover extends into the inside of first support cover, and forms first drainage structure between the upper portion of second support cover with the inside of first support cover, the inside of second support cover with the shell of motor forms second drainage structure, such double -deck independent drainage structure sets up, strengthens the drainage effect, makes the water storage on the main shaft motor of lower layer greatly reduces, thereby alleviates the water storage corrosion phenomenon on main shaft motor.

[0018] 2. Auxiliary disc is used for fixing on the oil throwing disc, and the auxiliary disc can cover the upper surface of the oil throwing disc, the auxiliary disc can protect the surface of the oil throwing disc, solve the problem of static corrosion of the main shaft motor oil throwing disc. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the perspective view of the split type swivel joint support device of the utility model embodiment;

[0020] Figure 2 It is the full section view of the split type swivel joint support device of this embodiment;

[0021] Figure 3 It is Figure 2 The enlarged view of A in DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the utility model provides with attached drawing. These attached drawings are part of the utility model disclosure, mainly used to illustrate the embodiment, and can cooperate with the relevant description of the specification to explain the operation principle of the embodiment. With reference to these contents, those skilled in the art should understand other possible implementation manners and the advantages of the utility model. The components in the drawing are not drawn according to scale, and similar component symbols are usually used to represent similar components.

[0023] The utility model will be further illustrated by combining with the attached drawing and specific embodiment.

[0024] Referring to Figures 1-3 , the embodiment provides a swivel joint support device 20 for supporting and installing a swivel joint 30 on a motor 10. The swivel joint 30 includes a fixed shaft 31 and a rotating shaft 32, the fixed shaft 31 can be used to connect with an elbow 40, the rotating shaft 32 is communicated to the motor 10 to supply fluid, such as cooling liquid, etc., to the motor 10, the elbow 40 can be used as the inlet of the fluid.

[0025] The rotary joint support device 20 is a split type, which includes a first support sleeve 21 and a second support sleeve 22. The first support sleeve 21 and the second support sleeve 22 are connected to each other, and the first support sleeve 21 is used to be connected to the housing 11 of the motor 10, while the second support sleeve 22 is used to install the fixed shaft 31, thereby fixing the fixed shaft 31 to the housing 11 of the motor 10.

[0026] An oil slinger 12 is mounted on the housing 11 of the motor 10, and a rotating shaft 32 is mounted on the oil slinger 12. The rotating shaft 32 is concentrically arranged with the fixed shaft 31, and the ends of the rotating shaft 32 and the fixed shaft 31 abut against each other. The rotating components of the motor 10 can drive the rotating shaft 32 to rotate relative to the fixed shaft 31. When the fluid flows along... Figure 3 When the fluid flows in the direction indicated by the middle arrow, the gap between the rotating shaft 32 and the fixed shaft 31 causes slight leakage. Therefore, in this embodiment, a double-layer independent drainage structure is provided to enhance the drainage effect and reduce water accumulation and corrosion on the spindle motor. Specifically, the first support sleeve 21 and the second support sleeve 22 are sleeved together. The second support sleeve 22 is positioned below the first support sleeve 21, and the upper part of the second support sleeve 22 extends into the inner side of the first support sleeve 21, forming a first drainage structure 201 between the upper part of the second support sleeve 22 and the inner side of the first support sleeve 21. A second drainage structure 202 is formed between the inner side of the second support sleeve 22 and the outer casing 11 of the motor 10. Under the action of centrifugal force, the fluid leaking between the rotating shaft 32 and the fixed shaft 31 can be preferentially discharged into the first drainage structure 201. That is, most of the leaked fluid is discharged into the first drainage structure 201, and only a small portion of the leaked fluid slides down into the second drainage structure 202. This double-layer independent drainage structure enhances the drainage effect, which greatly reduces the water accumulation on the lower spindle motor, thereby mitigating the water accumulation corrosion phenomenon on the spindle motor.

[0027] The side wall of the first support sleeve 21 is connected to a first fluid outlet 24, which is connected to the first drainage structure 201, so that the fluid in the first drainage structure 201 can be discharged through the first fluid outlet 24. The side wall of the second support sleeve 22 is connected to a second fluid outlet 25, which is connected to the second drainage structure 202, so that the fluid in the second drainage structure 202 can be discharged through the second fluid outlet 25.

[0028] The second support sleeve 22 is provided with an upper extending part 221, a first step part 222 and a second step part 223, the inner wall of the first support sleeve 21 abuts against the side surface of the first step part 222, so that the platform part of the first step part 222 forms the bottom surface of the first drainage structure 201, and the upper extending part 221 and the inner wall of the first support sleeve 21 form the side wall of the first drainage structure 201, so that the first drainage structure 201 has simple forming structure and is convenient to manufacture as a whole.

[0029] The lower end of the first support sleeve 21 abuts against the platform part of the second step part 223, so that the installation is more convenient, and the second step part 223 can be located in the oil throwing disc 12 and the auxiliary disc 23 to be described later, so that the space arrangement is more reasonable.

[0030] With reference to Figure 3 The rotating joint support device 20 further comprises an auxiliary disc 23, the auxiliary disc 23 is fixed on the oil throwing disc 12, and the auxiliary disc 23 covers the upper surface of the oil throwing disc 12, so that the auxiliary disc 23 can protect the surface of the oil throwing disc 12 and solve the problem of static corrosion of the main shaft motor oil throwing disc 12.

[0031] With reference to Figure 3 , and the auxiliary disc 23 plays an auxiliary installation and positioning role for the rotating shaft 32, so that the installation and positioning precision of the rotating shaft 32 can be improved. Specifically, the two ends of the rotating shaft 32 are respectively supported on the oil throwing disc 12 and the auxiliary disc 23. The lower part of the rotating shaft 32 is supported on the oil throwing disc 12; the auxiliary disc 23 comprises a disc part 231 and a cylinder part 232, one end of the cylinder part 232 is connected with the disc part 231, and the other end is provided with a mounting hole 2321, the mounting hole 2321 is used for cooperating with the upper part of the rotating shaft 32, so that the auxiliary disc 23 can play an auxiliary installation and positioning role for the rotating shaft 32 and improve the installation and positioning precision of the rotating shaft 32.

[0032] Further, a sealing groove 2322 is formed in the side wall of the mounting hole 2321, the sealing groove 2322 is used for installing a sealing member, such as an O-ring, so that the sealing property between the auxiliary disc 23 and the rotating shaft 32 is improved.

[0033] The upper end of the auxiliary disc 23 is not lower than the upper end of the upper extending part 221 of the second support sleeve 22, so that the fluid is more conducive to entering the first drainage structure 201, and the water storage on the lower main shaft motor is further reduced, so that the water storage corrosion phenomenon on the main shaft motor is further alleviated.

[0034] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes are within the protection scope of the utility model.

Claims

1. A split rotary joint support device for supporting a rotary joint having a fixed shaft and a rotary shaft on a motor, characterized by, The split rotary joint support device comprises a first support sleeve and a second support sleeve, the first support sleeve is used for being connected with the shell of the motor, the second support sleeve is used for mounting the fixed shaft, the first support sleeve and the second support sleeve are sleeved with each other, the second support sleeve is arranged below the first support sleeve, the upper portion of the second support sleeve extends into the inside of the first support sleeve, and the first drainage structure is formed between the upper portion of the second support sleeve and the inside of the first support sleeve, and the second drainage structure is formed between the inside of the second support sleeve and the shell of the motor.

2. The split rotary union support device of claim 1, wherein: The second support sleeve is provided with an upper extension portion and a first step portion, the inner wall of the first support sleeve abuts against the side surface of the first step portion, the platform portion of the first step portion forms the bottom surface of the first drainage structure, and the upper extension portion and the inner wall of the first support sleeve form the side wall of the first drainage structure.

3. The split rotary union support device of claim 2, wherein: The second support sleeve is further provided with a second step portion, and the lower end of the first support sleeve abuts against the platform portion of the second step portion.

4. The split rotary union support device of claim 2, wherein: The side wall of the first support sleeve is connected with a first fluid outlet, the first fluid outlet is communicated with the first drainage structure, the side wall of the second support sleeve is connected with a second fluid outlet, and the second fluid outlet is communicated with the second drainage structure.

5. The split rotary union support device of claim 2, wherein: The split rotary joint support device further comprises an auxiliary disc, the shell of the motor is provided with an oil throwing disc, the auxiliary disc is used for being fixed on the oil throwing disc, and the auxiliary disc can cover the upper surface of the oil throwing disc.

6. The split rotary union support device of claim 5, wherein: The oil throwing disc and the auxiliary disc can be respectively used for supporting two ends of the rotary shaft.

7. The split rotary union support device of claim 6, wherein: The auxiliary disc comprises a disc portion and a cylinder portion, one end of the cylinder portion is connected with the disc portion, the other end is provided with a mounting hole, the mounting hole is used for cooperating with the upper portion of the rotary shaft, and the lower portion of the rotary shaft is supported on the oil throwing disc.

8. The split rotary union support device of claim 7, wherein: A sealing groove is arranged on the side wall of the mounting hole, and the sealing groove is used for mounting a sealing element.

9. The split rotary union support device of claim 5, wherein: The upper end of the auxiliary disc is not lower than the upper end of the upper extension portion of the second support sleeve.

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