CN216096210U - Rotary joint and oil cylinder - Google Patents
Rotary joint and oil cylinder Download PDFInfo
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- CN216096210U CN216096210U CN202122008206.7U CN202122008206U CN216096210U CN 216096210 U CN216096210 U CN 216096210U CN 202122008206 U CN202122008206 U CN 202122008206U CN 216096210 U CN216096210 U CN 216096210U
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Abstract
The utility model provides a rotary joint and an oil cylinder, and relates to the technical field of joints of machine equipment. The utility model discloses a solve among the prior art technical problem that rotary joint easily leaks oil, axle and cover easily break away from, guaranteed the integrality of sealing washer and hole check ring.
Description
Technical Field
The utility model relates to the technical field of joints of machine equipment, in particular to a rotary joint and an oil cylinder.
Background
Many machine component blanks are forged from steel, and multiple processes are required for forming them, such as roll forging of connecting rod parts of automobile engines. In the roll forging process, the roll forging power of the roll forging machine is hydraulic, the medium needs to be conveyed to the roll forging power equipment through the rotary joint, the rotary joint needs to do compound motion, namely the rotary joint does linear motion while rotating, and the requirements of the forging process are limited. The structure of the existing rotary joint is a bent neck type structure with a bearing, a sealing ring and a hole check ring arranged in one side, the structure has the defect that the following problems easily occur to the rotary joint under the continuous circulating working state, firstly, the sealing ring is easy to wear and damage and leaks oil, and secondly, the hole check ring is worn and abraded to cause the shaft and the sleeve to break away, so that the production is delayed, and the working efficiency of equipment is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rotary joint and an oil cylinder so as to solve the technical problems that in the related technology, the rotary joint is easy to leak oil and a shaft and a sleeve are easy to separate.
In order to solve the technical problems, the technical means adopted by the utility model are as follows:
the utility model provides a rotary joint comprising: a swivel and a spindle;
the rotating body is provided with a first oil hole and a through hole, the through hole is vertically connected to the first oil hole, and a sealing ring, a bearing and a hole check ring are sequentially arranged in the through hole from the axis of the first oil hole to two ends of the through hole;
the rotating body is sleeved outside the main shaft through the through hole, and the sealing ring, the bearing and the hole retainer ring are sleeved outside the main shaft;
the main shaft is provided with a second oil hole which is communicated with the first oil hole.
As a further technical scheme, a sealing ring hole, a bearing hole and a retainer ring hole are sequentially arranged in the through hole from the axis of the first oil hole to the two ends of the through hole, and the sealing ring, the bearing and the hole retainer ring are correspondingly embedded in the sealing ring hole, the bearing hole and the retainer ring hole.
As a further aspect, the seal rings, the bearing, and the hole check ring located on both sides of the axis of the first oil hole are provided in one-to-one correspondence with the axis of the first oil hole.
As a further technical solution, the first oil hole includes a lower drop oil hole and an oil collecting hole, and the oil collecting hole has a diameter larger than that of the lower drop oil hole, and the lower drop oil hole communicates with the second oil hole through the oil collecting hole.
As a further technical solution, the second oil hole includes a main oil hole and a plurality of oil dividing holes, the oil dividing holes are disposed around a central axis of the main oil hole, a sectional area of the main oil hole is equal to a sum of sectional areas of the oil dividing holes, and the main oil hole communicates with the oil collecting hole through the oil dividing holes.
As a further technical scheme, the oil collecting hole is communicated with the oil distributing hole, and the diameter of the oil collecting hole is larger than that of the oil distributing hole.
As a further technical scheme, the rotating body is provided with a first connecting body, the first connecting body is provided with an external thread used for being connected with an external joint, and the first oil hole is formed in the first connecting body.
As a further technical scheme, a fixing body and a second connecting body are respectively arranged at two ends of the main shaft, the fixing body is a polyhedron, the second connecting body is provided with an external thread and a circular retainer ring, and the second connecting body is used for being connected with an external joint.
As a further technical scheme, a pressing ring and a retaining ring are arranged at one end of the main shaft and at a position close to the hole retainer ring, the pressing ring is pressed against an inner ring of the bearing, the main shaft is provided with a circular groove, and the retaining ring is arranged in the circular groove and is abutted against the pressing ring.
The oil cylinder provided by the utility model comprises the rotary joint.
Compared with the prior art, the rotary joint and the oil cylinder provided by the utility model have the technical advantages that:
the utility model provides a rotary joint which comprises a rotating body and a main shaft, wherein the rotating body is provided with a first oil hole and a through hole, the through hole is vertically connected with the first oil hole, a sealing ring, a bearing and a hole retaining ring are sequentially arranged inside the through hole from the axis of the first oil hole to two ends of the through hole, the rotating body is sleeved outside the main shaft through the through hole, the sealing ring, the bearing and the hole retaining ring are sleeved outside the main shaft, the main shaft is provided with a second oil hole, and the second oil hole is communicated with the first oil hole.
In the utility model, the interior of the swivel is divided into two parts by taking the central axis of the first oil hole as a boundary, each part is provided with a sealing ring, a bearing and a hole check ring, the swivel is sleeved outside the main shaft through the through hole, and the sealing ring, the bearing and the hole check ring are also sleeved on the outer circumference of the main shaft. When the rotary joint works actually, the rotating body rotates around the central axis of the main shaft, and the sealing rings, the bearings and the hole check rings distributed on the two sides of the central axis of the first oil hole bear stress together, so that the sealing rings and the hole check rings are not easy to wear, good working performance is kept, the sealing rings completely ensure that the rotary joint is free from oil leakage in work, the holes use the check rings completely ensure that the bearings cannot be separated from the rotating body or the main shaft, and the problem that the rotating body is separated from the main shaft cannot occur.
The oil cylinder provided by the utility model comprises the rotary joint, so that the technical advantages and effects of the oil cylinder comprise the technical advantages and effects of the rotary joint, and are not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a front sectional view of an assembling structure of a rotary joint according to an embodiment of the present invention;
fig. 2 is a front sectional view of a swivel of a rotary joint according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a second oil hole of a rotary joint according to an embodiment of the present invention.
Icon:
100-a swivel; 110-a first oil hole; 111-drop oil holes; 112-oil collecting holes; 120-a first connector; 130-a through hole; 131-sealing ring hole; 132-a bearing bore; 133-retainer ring holes;
200-a main shaft; 210-a stationary body; 220-a second oil hole; 221-oil separating hole; 222-a main oil hole; 230-a second connector;
300-sealing ring; 400-a bearing; 500-hole retainer ring; 600-a compression ring; 700-retaining retainer ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The rotary joint provided by the embodiment comprises: the spindle comprises a rotor 100 and a spindle 200, wherein the rotor 100 is provided with a first oil hole 110 and a through hole 130, the through hole 130 is vertically connected to the first oil hole 110, a sealing ring 300, a bearing 400 and a hole retainer ring 500 are sequentially arranged inside the through hole 130 from the axis of the first oil hole 110 to two ends of the through hole 130, the rotor 100 is sleeved outside the spindle 200 through the through hole 130, the sealing ring 300, the bearing 400 and the hole retainer ring 500 are sleeved outside the spindle 200, the spindle 200 is provided with a second oil hole 220, and the second oil hole 220 is communicated with the first oil hole 110.
In this embodiment, as shown in fig. 1 and fig. 2, the rotor 100 is provided with the first oil hole 110, the main shaft 200 is provided with the second oil hole 220, the main shaft 200 is located in the through hole 130 of the rotor 100, and the first oil hole 110 is communicated with the second oil hole 220, so that an oil path inside the rotary joint is smooth, and the problem of insufficient oil supply is avoided. The interior of the swivel body 100 is divided into two parts by taking the central axis of the first oil hole 110 as a boundary, each part is provided with a sealing ring 300, a bearing 400 and a hole retainer ring 500, the sealing ring 300, the bearing 400 and the hole retainer ring 500 are sleeved on the outer circumference of the main shaft 200, and the sealing ring 300 is arranged at a position close to the communication position of the first oil hole 110 and the second oil hole 220 so as to prevent hydraulic oil in an oil path from leaking when a rotary joint works; the bearing 400 is disposed at the outer circumference of the main shaft 200, thereby realizing that the rotator 100 can rotate around the central axis of the main shaft 200; the hole stopper 500 is provided to abut against the end surface of the bearing 400 to prevent the bearing 400 from moving in the direction of the central axis of the main shaft 200, thereby preventing the problem of the separation of the rotator 100 from the main shaft 200. When the rotary joint actually works, the rotating body 100 rotates around the central axis of the main shaft 200, and the sealing ring 300, the bearing 400 and the hole retainer ring 500 distributed on both sides of the central axis of the first oil hole 110 bear stress together, so that the sealing ring 300 and the hole retainer ring 500 are not easily worn, good working performance is maintained, the integrity of the sealing ring 300 ensures that the rotary joint does not leak oil during working, the integrity of the hole retainer ring 500 ensures that the bearing 400 cannot be separated from the rotating body 100 or the main shaft 200, and the problem that the rotating body 100 is separated from the main shaft 200 cannot occur.
In an optional technical solution of this embodiment, from the axis of the first oil hole 110 to both ends of the through hole 130, a seal ring hole 131, a bearing hole 132, and a retainer ring hole 133 are sequentially disposed in the through hole 130, and the seal ring 300, the bearing 400, and the hole retainer ring 500 are correspondingly embedded in the seal ring hole 131, the bearing hole 132, and the retainer ring hole 133.
Specifically, as shown in fig. 2, a seal ring hole 131, a bearing hole 132 and a retainer ring hole 133 are provided in the through hole 130, the seal ring 300, the bearing 400 and the retainer ring 500 for hole are respectively and correspondingly embedded in the seal ring hole 131, the bearing hole 132 and the retainer ring hole 133, so that the seal ring 300, the bearing 400 and the retainer ring 500 for hole are limited, the positions of the three are fixed, and a seal table, a bearing table and a thread corresponding to the installation of the seal ring 300, the bearing 400 and the retainer ring 500 for hole are also provided on the outer circumference of the main shaft 200, so that the limit of the seal ring 300, the bearing 400 and the retainer ring 500 for hole is realized.
In an alternative embodiment of this embodiment, the seal rings 300, the bearing 400, and the hole check ring 500 located on both sides of the axis of the first oil hole 110 are symmetrically disposed in one-to-one correspondence with the axis of the first oil hole 110.
In the present embodiment, the seal ring 300, the bearing 400, and the orifice check ring 500 are provided symmetrically with respect to the axis of the first oil hole 110 in the rotor 100. When the rotary joint works, the rotating body 100 rotates around the central axis of the main shaft 200, the sealing rings 300, the bearings 400 and the hole check rings 500 which are symmetrically distributed on two sides of the central axis of the first oil hole 110 are uniformly stressed, so that the sealing rings 300 and the hole check rings 500 are not easily worn, good working performance is kept, the sealing rings 300 completely ensure that the rotary joint does not leak oil during working, the hole check rings 500 completely ensure that the bearings 400 cannot be separated from the rotating body 100 or the main shaft 200, and the problem that the rotating body 100 is separated from the main shaft 200 cannot occur.
In an optional solution of this embodiment, the first oil hole 110 includes a lower oil hole 111 and an oil collecting hole 112, and the oil collecting hole 112 has a diameter larger than that of the lower oil hole 111, and the lower oil hole 111 communicates with the second oil hole 220 through the oil collecting hole 112.
Specifically, as shown in fig. 2, the central axes of the lower drop oil hole 111 and the oil collection hole 112 coincide with each other and are perpendicular to the axis of the through hole 130. When the rotary joint is operated, hydraulic oil flows from the first oil hole 110 to the second oil hole 220, and in the first oil hole 110, the hydraulic oil flows from the lower hanging oil hole 111 to the oil collecting hole 112 and further flows to the second oil hole 220, so that the diameters of the lower hanging oil hole 111 and the oil collecting hole 112 influence the smooth flow of the hydraulic oil. In the embodiment, the diameter of the oil collecting hole 112 is larger than that of the lower oil hole 111, and the design can ensure that the hydraulic oil in the lower oil hole 111 flows to the second oil hole 220 through the oil collecting hole 112 without obstruction, so as to avoid the blocking.
In an optional technical solution of this embodiment, the second oil hole 220 includes a main oil hole 222 and a plurality of oil dividing holes 221, the oil dividing holes 221 are disposed around a central axis of the main oil hole 222, a cross-sectional area of the main oil hole 222 is equal to a sum of cross-sectional areas of the oil dividing holes 221, and the main oil hole 222 is communicated with the oil collecting hole 112 through the oil dividing holes 221.
Specifically, as shown in fig. 3, the main oil hole 222 coincides with the central axis of the main shaft 200, and is perpendicular to the axis of the oil distribution hole 221. When the rotary joint is operated, hydraulic oil flows from the first oil hole 110 to the main oil hole 222 through the oil dividing hole 221 and further flows from the main oil hole 222 to the cylinder, and therefore, the diameters of the main oil hole 222 and the oil dividing hole 221 affect the supply of hydraulic oil. In this embodiment, the sectional area of the main oil hole 222 is equal to the sum of the sectional areas of the branch oil holes 221, so as to ensure the smoothness and the balance of the hydraulic oil flow.
Further, as can be seen from fig. 3, the number of the oil dividing holes 221 is set to 4 in this embodiment, and the sum of the sectional areas of the 4 oil dividing holes 221 is equal to the sectional area of the main oil hole 222. It should be noted here that the number of the oil distribution holes 221 is not limited to that shown in fig. 3, and may be set to 2, 3, or 5, but it is necessary to ensure that the sectional area of the main oil hole 222 is equal to the sum of the sectional areas of the oil distribution holes 221, so as to ensure the smoothness of the oil path. Meanwhile, it should be noted that the number of the oil distribution holes 221 affects the strength of the corresponding portion of the main shaft 200, and therefore, the design of the oil distribution holes 221 is determined according to actual conditions.
In an optional technical solution of this embodiment, the oil collecting hole 112 is communicated with the oil distributing hole 221, and a diameter of the oil collecting hole 112 is larger than a diameter of the oil distributing hole 221. Specifically, as shown in fig. 1, the central axes of the oil collecting hole 112 and the oil distributing hole 221 are coincident, when the rotary joint is in operation, hydraulic oil flows from the oil collecting hole 112 to the oil distributing hole 221, and the diameter of the oil collecting hole 112 is larger than that of the oil distributing hole 221, so that sufficient supply of hydraulic oil is ensured, and the problem of insufficient oil quantity is avoided.
In an optional technical solution of this embodiment, the rotator 100 is provided with a first connecting body 120, the first connecting body 120 is provided with an external thread for connecting with an external joint, and the first oil hole 110 is provided in the first connecting body 120. Specifically, the first connecting body 120 is connected to the control valve through a rubber tube, and the hydraulic oil flowing out through the control valve enters the drooping oil hole 111 and then flows to the oil collecting hole 112, the oil distributing hole 221, the main oil hole 222 and the oil cylinder in sequence, so that the rotary joint completes the task of conveying the hydraulic oil.
In an optional technical solution of this embodiment, two ends of the main shaft 200 are respectively provided with a fixing body 210 and a second connecting body 230, the fixing body 210 is a polyhedron, the second connecting body 230 is provided with an external thread and a circular retainer ring, and the second connecting body 230 is used for being connected with an external joint.
Specifically, the second connection body 230 is connected to the cylinder. In actual operation, the fixing body 210 is rotated by a wrench, so that the external thread of the second connecting body 230 is screwed into the oil cylinder until the circular retainer ring on the second connecting body 230 abuts against the end face of the oil cylinder, and the installation of the rotary joint is completed. It should be noted that the structure of the fixing body 210 is not limited to the rectangular body shown in fig. 1, and other structures capable of cooperating with the installation tool can be designed.
In the optional technical solution of this embodiment, a pressing ring 600 and a retaining ring 700 are disposed at one end of the main shaft 200 and at a position close to the hole retainer ring 500, the pressing ring 600 is pressed against the inner ring of the bearing 400, the main shaft 200 is provided with a circular groove, and the retaining ring 700 is mounted in the circular groove and abuts against the pressing ring 600.
Specifically, as shown in fig. 1, the pressing ring 600 is provided with a protruding circle, and is pressed against the inner ring of the bearing 400, and the retaining ring 700 abuts against the end surface of the pressing ring 600, so as to ensure that the bearing 400 cannot move along the axial direction of the spindle 200, wherein the pressing ring 600 is fixed to the spindle 200 through a thread, and the retaining ring 700 is fixed to the spindle 200 through a clamping connection.
During actual assembly of the rotary joint, firstly, the seal ring 300, the bearing 400 and the hole retainer ring 500 are respectively installed in the seal ring hole 131, the bearing hole 132 and the retainer ring hole 133 designed in the rotating body 100, then the through hole 130 is penetrated from one end of the main shaft 200 provided with the fixing body 210, the seal ring 300, the bearing 400 and the hole retainer ring 500 are sleeved on the corresponding part of the main shaft 200, finally, the pressing ring 600 is screwed into one end of the main shaft 200 provided with the fixing body 210 and the anti-backing retainer ring 700 is installed, the assembly of the rotary joint is completed, then the first connecting body 120 and the second connecting body 230 are respectively connected with the associated external joint, and a machine and a hydraulic system are started, so that the rotary joint can work.
The oil cylinder provided by the embodiment comprises the rotary joint, and therefore the technical advantages achieved by the oil cylinder comprise the technical advantages and effects achieved by the rotary joint, and are not repeated herein.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein, and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (10)
1. A swivel joint, comprising: a rotor (100) and a main shaft (200);
the rotating body (100) is provided with a first oil hole (110) and a through hole (130), the through hole (130) is vertically connected to the first oil hole (110), and a sealing ring (300), a bearing (400) and a hole retainer ring (500) are sequentially arranged inside the through hole (130) from the axis of the first oil hole (110) to two ends of the through hole (130);
the rotating body (100) is sleeved outside the main shaft (200) through the through hole (130), and the sealing ring (300), the bearing (400) and the retainer ring (500) for hole are sleeved outside the main shaft (200);
the main shaft (200) is provided with a second oil hole (220), and the second oil hole (220) is communicated with the first oil hole (110).
2. The rotary joint according to claim 1, wherein a seal ring hole (131), a bearing hole (132), and a retainer ring hole (133) are provided in the through hole (130) in this order from the axis of the first oil hole (110) to both ends of the through hole (130), and the seal ring (300), the bearing (400), and the retainer ring for hole (500) are fitted in the seal ring hole (131), the bearing hole (132), and the retainer ring hole (133) in a corresponding manner.
3. The rotary joint according to claim 1, wherein the seal rings (300), the bearing (400), and the hole check ring (500) located on both sides of the axis of the first oil hole (110) are symmetrically arranged in one-to-one correspondence with respect to the axis of the first oil hole (110).
4. The rotary joint according to claim 1, wherein the first oil hole (110) includes a lower drop oil hole (111) and an oil collection hole (112), and a diameter of the oil collection hole (112) is larger than a diameter of the lower drop oil hole (111), the lower drop oil hole (111) communicating with the second oil hole (220) through the oil collection hole (112).
5. The rotary joint according to claim 4, wherein the second oil hole (220) includes a main oil hole (222) and a plurality of oil dividing holes (221), the oil dividing holes (221) are disposed around a central axis of the main oil hole (222), and a sectional area of the main oil hole (222) is equal to a sum of sectional areas of the oil dividing holes (221), the main oil hole (222) communicating with the oil collecting hole (112) through the oil dividing holes (221).
6. The rotary joint according to claim 5, wherein the oil gathering hole (112) communicates with the oil distribution hole (221), and a diameter of the oil gathering hole (112) is larger than a diameter of the oil distribution hole (221).
7. The rotary joint according to claim 1, wherein the rotor (100) is provided with a first coupling body (120), the first coupling body (120) is provided with an external thread for connection with an outer joint, and the first oil hole (110) is provided in the first coupling body (120).
8. The rotary joint according to claim 1, wherein a fixing body (210) and a second connecting body (230) are respectively arranged at two ends of the main shaft (200), the fixing body (210) is a polyhedron, the second connecting body (230) is provided with an external thread and a circular retaining ring, and the second connecting body (230) is used for being connected with an external joint.
9. The rotary joint according to claim 1, wherein a pressing ring (600) and a retaining ring (700) are arranged at one end of the main shaft (200) and close to the hole retaining ring (500), the pressing ring (600) is pressed against the inner ring of the bearing (400), the main shaft (200) is provided with a circular groove, and the retaining ring (700) is installed in the circular groove and is abutted against the pressing ring (600).
10. A cylinder comprising a swivel joint according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122008206.7U CN216096210U (en) | 2021-08-24 | 2021-08-24 | Rotary joint and oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122008206.7U CN216096210U (en) | 2021-08-24 | 2021-08-24 | Rotary joint and oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216096210U true CN216096210U (en) | 2022-03-22 |
Family
ID=80728328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122008206.7U Active CN216096210U (en) | 2021-08-24 | 2021-08-24 | Rotary joint and oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216096210U (en) |
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2021
- 2021-08-24 CN CN202122008206.7U patent/CN216096210U/en active Active
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