CN215410700U - Compact rotary hydraulic joint - Google Patents

Abstract

The utility model discloses a compact rotary hydraulic joint which comprises a mandrel and an outer sleeve positioned outside the mandrel, wherein a bearing blocking cover is arranged on the right end face of the outer sleeve and positioned on the mandrel, a bearing is arranged on the mandrel and positioned on the left end face of the bearing blocking cover, a check ring is arranged on the mandrel and positioned on the left end face of the bearing, a dust-proof ring is arranged between the mandrel and the bearing blocking cover, two sealing rings and two support rings are arranged between the mandrel and the outer sleeve, a mandrel through hole is formed in the mandrel along the axial direction, an outer sleeve through hole is formed in the outer sleeve along the axial direction, and the mandrel through hole and the outer sleeve through hole are coaxially arranged and are communicated with each other. The outer sleeve can rotate relative to the mandrel through the bearing between the mandrel and the outer sleeve, the mandrel can be fixed when the outer sleeve rotates along the axial direction, the structure is compact, the drift diameter range and the connection form of an oil pipe are not limited, and the application range is wide.

Description

Compact rotary hydraulic joint

Technical Field

The utility model relates to the technical field of hydraulic rotary joints, in particular to a compact rotary hydraulic joint.

Background

The hydraulic rotary joint is a rotary joint specially used for low-speed high-pressure multi-medium and multi-channel equipment, and is used for equipment such as a machining center rotary worktable, a hydraulic workstation, a coiling machine, a converter, a bale rotary worktable, hydraulic machinery, a multi-channel high-pressure controller and the like. The hydraulic rotary joint is internally provided with an independent pipeline, and can be selected according to different working condition requirements, so that the maximum benefit is exerted. Two precision bearings are arranged in the rotary joint, so that the rotary joint is stable in operation, durable, reliable, firm and flexible, has a small friction coefficient and can operate at a high speed. In general, hydraulic rotary joints are commonly used to deliver hydraulic medium to hydraulic actuators and the like on rotary equipment. However, the existing hydraulic rotary joint is unreasonable in structure, complex in structure and high in processing cost, so that improvement is urgently needed.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide a compact rotary hydraulic joint to solve the problems set forth in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a rotatory hydraulic joint of compact, includes the dabber and is located the outside overcoat of dabber, the right-hand member face of overcoat just is located the spindle and is provided with the bearing blanking cover, the left end face that the spindle just is located the bearing blanking cover is provided with the bearing, the left end face that the spindle just is located the bearing is provided with the retaining ring, be provided with the dust ring between dabber and the bearing blanking cover, be provided with sealing washer and support ring between dabber and the overcoat, it has the dabber through-hole to open on the spindle along the axis direction, it has the overcoat through-hole to open on the overcoat along the axis direction, and the dabber through-hole just communicates each other with the coaxial setting of overcoat through-hole.

Preferably, the bearing blanking cover is fixed on the right end face of the outer sleeve through a plurality of bolts which are uniformly distributed and located on the same circumference.

Preferably, the number of the sealing rings is two, and the two sealing rings are located between the support ring and the retainer ring.

Preferably, the bearing is a deep groove ball bearing, an outer ring of the bearing is in contact with the outer sleeve and the bearing blocking cover, and an inner ring of the bearing is in contact with the mandrel and the check ring.

Preferably, the support ring is located at the leftmost end of the mandrel.

Preferably, the sealing ring and the support ring are both positioned on the mandrel, and the inner side surface of the outer sleeve is provided with a groove for mounting the sealing ring and the support ring.

Preferably, the mandrel is provided with a groove for installing the retainer ring.

Preferably, the dabber is the step shaft, the inside shape and the spool phase-match of overcoat are the notch cuttype.

Preferably, the through hole of the mandrel is the same as the through hole of the outer sleeve in aperture size.

Compared with the prior art, the outer sleeve can rotate relative to the mandrel through the bearing between the mandrel and the outer sleeve, and the mandrel can be fixed when the outer sleeve rotates along the axial direction, so that the mandrel can be connected with a hard pipe, or a rubber pipe can be prevented from knotting; according to the utility model, through the design of the sealing ring and the dustproof ring, the sealing performance of the device is improved, dust and impurities are reduced from entering the device, the service life of the device is prolonged, the drift diameter range and the connection form of an oil pipe are not limited, the structure is compact, and the application range is wide.

Drawings

FIG. 1 is a schematic sectional front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic front view of the present invention.

In the figure: 1-mandrel, 2-outer sleeve, 3-bearing block cover, 4-bearing, 5-retainer ring, 6-dust ring, 7-sealing ring, 8-supporting ring, 9-mandrel through hole, 10-outer sleeve through hole and 11-bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-3, the present invention provides a technical solution: a compact rotary hydraulic joint comprises a mandrel 1 and an outer sleeve 2 positioned outside the mandrel 1, wherein a bearing blocking cover 3 is arranged on the right end face of the outer sleeve 2 and positioned on the mandrel 1, the bearing blocking cover 3 plays a role in sealing, a bearing 4 is arranged on the mandrel 1 and positioned on the left end face of the bearing blocking cover 3, the bearing 4 plays a role in rolling support and positioning, so that the mandrel 1 and the outer sleeve 2 can rotate relatively, a check ring 5 is arranged on the mandrel 1 and positioned on the left end face of the bearing 4, the check ring 5 plays a role in limiting and limiting the position of the bearing 4, a dust ring 6 is arranged between the mandrel 1 and the bearing blocking cover 3, the dust ring plays a role in dust protection, dust impurities are placed into the outer sleeve 2, a sealing ring 7 and a support ring 8 are arranged between the mandrel 1 and the outer sleeve 2, the sealing ring 7 plays a role in sealing protection, and prolongs the service life of equipment, the support ring 8 plays the effect of support for the relative position of restriction dabber 1 and overcoat 2, it has dabber through-hole 9 to open on the dabber 1 along the axis direction, it has overcoat through-hole 10 to open on the overcoat 2 along the axis direction, dabber through-hole 9 and the coaxial setting of overcoat through-hole 10 and communicate each other, dabber through-hole 9 all is used for passing through oil with overcoat through-hole 10, dabber 1 is connected with oil pipe, overcoat 2 can be as an organic whole or link to each other with certain part of host computer.

Particularly, bearing blanking cover 3 is fixed in the right-hand member face of overcoat 2 through a plurality of bolts 11, and is a plurality of bolt 11 evenly distributed just is located same circumference, adopts bolt 11 to connect fixedly, connects stably, and the reliability is high.

Specifically, the number of the sealing rings 7 is two, and the two sealing rings 7 are located between the support ring 8 and the retainer ring 5, so that the sealing performance is enhanced.

Specifically, bearing 4 is deep groove ball bearing, the outer loop and overcoat 2 and the contact of bearing blanking cover 3 of bearing 4, overcoat 2 and bearing blanking cover 3 carry out spacing fixed to bearing 4's outer loop, bearing 4's inner ring and dabber 1 and retaining ring 5 contact, dabber 1 and retaining ring 5 carry out spacing fixed to bearing 4's inner ring.

In particular, the support ring 8 is located at the leftmost end of the mandrel 1, and better limits the relative position of the mandrel 1 and the outer sleeve 2.

Specifically, sealing washer 7 and support ring 8 all are located dabber 1, the medial surface of overcoat 2 is opened has the recess that is used for installing sealing washer 7 and support ring 8.

Specifically, the mandrel 1 is provided with a groove for installing the retainer ring 5.

Particularly, dabber 1 is the step shaft, the inside shape of overcoat 2 is the notch cuttype with 1 phase-match of spool, plays the effect of the installation bearing 4 of being convenient for, is convenient for assemble bearing 4.

Particularly, the aperture size of the mandrel through hole 9 is the same as that of the outer sleeve through hole 10, so that oil can stably pass through the mandrel through hole 9 and the outer sleeve through hole 10.

The working principle is as follows: when the utility model is used, the mandrel 1 is fixed through different forms, the mandrel 1 is connected with the oil pipe, and the outer sleeve 2 can be integrated with a certain part of a host machine or connected with a certain part of the host machine. Because the bearing 4 enables the mandrel 1 and the outer sleeve 2 to rotate relatively, when a certain part of the main machine rotates 360 degrees along the axis to drive the outer sleeve 2 to rotate, the mandrel 1 and the external oil pipe can be fixed. The sealing ring 7 and the dustproof ring 6 reduce the dust and impurities entering the device, and the service life of the device is prolonged. The utility model has the advantages that under the condition that the main machine rotates, the external oil pipe can use a hard pipe or can avoid the knotting of a rubber pipe, and the structure is compact, the drift diameter range of the oil pipe is not limited, and the connection form of the oil pipe is not limited.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A compact rotary hydraulic joint comprising a mandrel (1) and a jacket (2) located outside the mandrel (1), characterized in that: the right-hand member face of overcoat (2) just is located dabber (1) periphery and is provided with bearing blanking cover (3), the left end face that just is located bearing blanking cover (3) on dabber (1) is provided with bearing (4), the left end face that just is located bearing (4) on dabber (1) is provided with retaining ring (5), be provided with dust ring (6) between dabber (1) and bearing blanking cover (3), be provided with between dabber (1) and overcoat (2) sealing washer (7) and support ring (8), it has dabber through-hole (9) to open on dabber (1) along the axis direction, it has overcoat through-hole (10) to open on overcoat (2) along the axis direction, and dabber through-hole (9) and overcoat through-hole (10) coaxial setting just communicate each other.

2. A compact rotary hydraulic joint as set forth in claim 1 wherein: bearing blanking cover (3) are fixed in the right-hand member face of overcoat (2) through a plurality of bolts (11), and are a plurality of bolt (11) evenly distributed just is located same circumference.

3. A compact rotary hydraulic joint as set forth in claim 1 wherein: the number of sealing washer (7) is two, two sealing washer (7) all are located between support ring (8) and retaining ring (5).

4. A compact rotary hydraulic joint as set forth in claim 1 wherein: the bearing (4) is a deep groove ball bearing, the outer ring of the bearing (4) is in contact with the outer sleeve (2) and the bearing blocking cover (3), and the inner ring of the bearing (4) is in contact with the mandrel (1) and the retainer ring (5).

5. A compact rotary hydraulic joint as set forth in claim 1 wherein: the support ring (8) is positioned at the leftmost end of the mandrel (1).

6. A compact rotary hydraulic joint as set forth in claim 1 wherein: sealing washer (7) and support ring (8) all are located dabber (1), the medial surface of overcoat (2) is opened has the recess that is used for installing sealing washer (7) and support ring (8).

7. A compact rotary hydraulic joint as set forth in claim 1 wherein: the mandrel (1) is provided with a groove for installing the retainer ring (5).

8. A compact rotary hydraulic joint as set forth in claim 1 wherein: dabber (1) is the step shaft, the inside shape and dabber (1) phase-match of overcoat (2) are the notch cuttype.

9. A compact rotary hydraulic joint as set forth in claim 1 wherein: the aperture size of the mandrel through hole (9) is the same as that of the outer sleeve through hole (10).

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