Locking mechanism of hydraulic slip ring

Abstract

The utility model relates to the technical field of hydraulic slip rings, in particular to a locking mechanism of a hydraulic slip ring, which comprises a sealing component group, the sealing component group comprises an outer ferrule shell, and an inclined screw is arranged in the outer ferrule shell. Compared with a rubber sealing ring in the prior art, the sealing ring is made of rubber or other elastic materials in long-term use, the materials are easy to age in high-pressure and high-temperature environments, and the aged materials can be hardened and lose elasticity, so that a gap between the inner rotating shaft and the outer sleeve shell cannot be effectively filled, and the sealing effect is improved. According to the mechanical seal used in the technology, the sealing effect can be effectively guaranteed through contact between the movable friction sealing ring and the fixed friction sealing ring, the sealing performance can still be guaranteed under the conditions of high temperature and high pressure, and then the practicability of the hydraulic sliding ring can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic slip rings, in particular to a locking mechanism of a hydraulic slip ring. Background Art

[0002] The hydraulic rotary joint is a kind of rotary joint specially used for low-speed, high-pressure, multi-media and multi-channel equipment. It serves the rotary table of the machining center, hydraulic workstation, coiler, converter, large-bale rotary table, hydraulic machinery and multi-channel high-pressure controller and other equipment.

[0003] The locking mechanism used in the existing hydraulic slip ring locks and seals the inner shaft through a sealing ring provided between the outer shell and the inner shaft, so as to ensure that the fluid in the slip ring will not leak out through the narrow gap between the outer shell and the inner shaft. However, in the long-term use of this structure which only uses a sealing ring, the sealing ring is made of rubber or other elastic materials. These materials are prone to aging under high pressure and high temperature environment. After aging, the material will harden and lose elasticity, and thus cannot effectively fill the narrow gap between the inner shaft and the outer shell, resulting in fluid leakage. In addition, the structure of the sealing ring makes it inconvenient to disassemble the hydraulic slip ring when replacement and maintenance are required, which affects the efficiency of disassembly and maintenance. Utility Model Content

[0004] In order to overcome the above technical problems, the purpose of the utility model is to provide a locking mechanism for a hydraulic slip ring to solve the problem of low reliability of the locking and sealing mechanism of the current hydraulic slip ring mentioned in the above background technology.

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

[0006] A locking mechanism for a hydraulic slip ring comprises a hydraulic slip ring body, wherein the hydraulic slip ring body comprises a fixed slip ring component, a movable slip ring component is arranged inside the fixed slip ring component, a sealing component group is arranged inside the fixed slip ring component, and the sealing component group is used to seal a gap between the movable slip ring component and the fixed slip ring component, wherein the sealing component group comprises an outer ring shell, an inclined screw is arranged inside the outer ring shell, a movable ring frame is arranged inside the outer ring shell, a vertical screw member is arranged inside the movable ring frame, a spring member is arranged on the side of the movable ring frame, a ring plate is arranged at one end of the spring member, a dynamic friction sealing ring is arranged on the side of the ring plate, and a fixed friction sealing ring is arranged on the side of the dynamic friction sealing ring.

[0007] Preferably, three sealing component groups are provided, and the three sealing component groups are distributed between the fixed slip ring components, and the three outer ring shells are connected between the fixed slip ring components by tilting screws.

[0008] Preferably: the vertical screws are arranged in multiple groups, and the multiple groups of vertical screws are evenly distributed on the dynamic ring frame, the dynamic ring frame is provided with through holes at positions corresponding to the vertical screws, the dynamic slip ring component is provided with threaded holes at positions corresponding to the vertical screws, and the dynamic ring frame and the dynamic slip ring component are connected via vertical screws.

[0009] Preferably, the spring member, the ring plate, the dynamic friction seal ring and the fixed friction seal ring are provided in two groups, and the two groups of spring members, the ring plate, the dynamic friction seal ring and the fixed friction seal ring are symmetrically distributed on both sides of the dynamic ring frame.

[0010] Preferably: one end of the spring member is connected to the dynamic ring frame, and the other end of the spring member is connected to the ring plate. The dynamic ring frame is provided with a slide groove at a position corresponding to the ring plate and the dynamic friction sealing ring, and the dynamic ring frame slides in contact with the ring plate and the dynamic friction sealing ring through the slide groove.

[0011] Preferably, a side surface of the dynamic friction sealing ring is connected to the ring plate, and the other side of the dynamic friction sealing ring is in friction contact with the fixed friction sealing ring.

[0012] Preferably, the fixed friction seal ring is connected to the fixed slip ring component, and the dynamic ring frame does not contact the fixed slip ring component.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The locking mechanism of the hydraulic slip ring is provided with a sealing component group. The locking mechanism used in the existing hydraulic slip ring uses a sealing ring provided between the outer shell and the inner shaft to lock and seal the inner shaft to ensure that the fluid in the slip ring will not flow out and leak along the fine gap between the outer shell and the inner shaft. However, in the structure that only uses the sealing ring, the sealing ring is made of rubber or other elastic materials in long-term use. These materials are prone to aging under high pressure and high temperature environment. After aging, the material will harden and lose elasticity, and thus cannot effectively fill the fine gap between the inner shaft and the outer shell, resulting in fluid leakage. In the corresponding designed sealing component group, the movable slip ring component will rotate in the fixed slip ring component. During the rotation of the movable slip ring component, the movable ring frame will be driven to rotate together through the vertical screw member. The rotation of the movable ring frame will drive the spring member, the ring plate and the dynamic friction member. The sealing ring rotates, and the dynamic friction sealing ring rotates and contacts with the fixed friction sealing ring. The spring part stores and releases the stored force to push the ring plate and the dynamic friction sealing ring. The dynamic friction sealing ring will continue to contact with the fixed friction sealing ring. The contact between the dynamic friction sealing ring and the fixed friction sealing ring is used for sealing. Compared with the rubber sealing ring in the prior art, the mechanical sealing structure of this design uses rubber or other elastic materials in long-term use. These materials are prone to aging under high pressure and high temperature environment. After aging, the material will become hard and lose elasticity, and thus cannot effectively fill the fine gap between the inner rotating shaft and the outer shell. The mechanical seal used in this technology can effectively ensure the sealing effect through the contact between the dynamic friction sealing ring and the fixed friction sealing ring. Under high temperature and high pressure conditions, it can still ensure sealing, thereby improving the practicality of the hydraulic slip ring.

[0015] 2. The locking mechanism of the hydraulic slip ring is provided with a sealing component group. When the sealing ring needs to be replaced and maintained, it is inconvenient to disassemble the hydraulic slip ring, which affects the efficiency of disassembly and maintenance. In the corresponding designed sealing component group, during long-term use, the inclined screw is unscrewed from the outer ring shell, and then the fixed slip ring component and the sealing component group can be opened. At this time, the fixed friction sealing ring and the dynamic friction sealing ring can be replaced. The fixed friction sealing ring is connected to the fixed slip ring component by screws, and the dynamic friction sealing ring is connected to the ring plate by screws. When replacing, the screws can be directly removed to replace the dynamic friction sealing ring and the fixed friction sealing ring. After long-term use, the dynamic friction sealing ring and the fixed friction sealing ring will be worn. Since the spring part continuously releases the stored force, it will ensure that the dynamic friction sealing ring and the fixed friction sealing ring still ensure friction contact and sealing. Compared with the operation of inconvenient maintenance of the sealing ring in the prior art, this design structure can quickly replace the dynamic friction sealing ring and the fixed friction sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic structural diagram of the overall cross-section of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the sealing component group of the utility model;

[0019] Figure 4 It is a cross-sectional structural schematic diagram of the sealing component assembly of the utility model;

[0020] Figure 5 For the utility model Figure 4 Schematic diagram of the structure at A in the middle.

[0021] In the figure: 01, hydraulic slip ring body; 11, fixed slip ring component; 12, dynamic slip ring component; 02, sealing component group; 21, outer ring shell; 22, tilting screw; 23, dynamic ring frame; 24, vertical screw component; 25, spring component; 26, ring plate; 27, dynamic friction seal ring; 28, fixed friction seal ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model provides an embodiment: a locking mechanism of a hydraulic slip ring, including a hydraulic slip ring body 01, the hydraulic slip ring body 01 includes a fixed slip ring component 11, a movable slip ring component 12 is arranged inside the fixed slip ring component 11, a sealing component group 02 is arranged inside the fixed slip ring component 11, the sealing component group 02 is used to seal the gap between the movable slip ring component 12 and the fixed slip ring component 11, the sealing component group 02 includes an outer ring shell 21, a tilting screw 22 is arranged inside the outer ring shell 21, a movable ring frame 23 is arranged inside the outer ring shell 21, a vertical screw member 24 is arranged inside the movable ring frame 23, a spring member 25 is arranged on the side of the movable ring frame 23, a ring plate 26 is arranged at one end of the spring member 25, a dynamic friction seal ring 27 is arranged on the side of the ring plate 26, and a fixed friction seal ring 28 is arranged on the side of the dynamic friction seal ring 27.

[0024] There are three sealing component groups 02 , and the three sealing component groups 02 are distributed between the fixed slip ring components 11 . The three outer ring shells 21 are connected between the fixed slip ring components 11 through tilting screws 22 .

[0025] There are multiple groups of vertical screws 24, and the multiple groups of vertical screws 24 are evenly distributed on the dynamic ring frame 23. The dynamic ring frame 23 is provided with through holes at positions corresponding to the vertical screws 24, and the dynamic slip ring component 12 is provided with threaded holes at positions corresponding to the vertical screws 24. The dynamic ring frame 23 and the dynamic slip ring component 12 are connected through the vertical screws 24.

[0026] There are two groups of spring members 25 , ring plates 26 , dynamic friction seals 27 and fixed friction seals 28 , and the two groups of spring members 25 , ring plates 26 , dynamic friction seals 27 and fixed friction seals 28 are symmetrically distributed on both sides of the dynamic ring frame 23 .

[0027] One end of the spring member 25 is connected to the dynamic ring frame 23, and the other end of the spring member 25 is connected to the ring plate 26. The dynamic ring frame 23 is provided with a slide groove at a position corresponding to the ring plate 26 and the dynamic friction seal ring 27, and the dynamic ring frame 23 slides in contact with the ring plate 26 and the dynamic friction seal ring 27 through the slide groove.

[0028] The side surface of the dynamic friction seal ring 27 is connected to the ring plate 26 , and the other side of the dynamic friction seal ring 27 is in friction contact with the fixed friction seal ring 28 .

[0029] The fixed friction seal ring 28 is connected to the fixed slip ring component 11 , and the moving ring frame 23 does not contact the fixed slip ring component 11 .

[0030] Working principle: The locking mechanism used in the existing hydraulic slip ring uses a sealing ring arranged between the outer shell and the inner shaft to lock and seal the inner shaft to ensure that the fluid in the slip ring will not flow out and leak along the narrow gap between the outer shell and the inner shaft. However, this structure that only uses a sealing ring will easily age under high pressure and high temperature conditions during long-term use. The material will harden and lose its elasticity after aging, and thus cannot effectively fill the narrow gap between the inner shaft and the outer shell, resulting in fluid leakage. In the corresponding designed sealing component group 02, the movable slip ring component 12 will rotate in the fixed slip ring component 11. During the rotation of the movable slip ring component 12, the movable ring frame 23 will be driven to rotate together through the vertical screw component 24. The rotation of the movable ring frame 23 will drive the spring component 25, the ring plate 26 and the dynamic friction seal 27 to rotate. The rotation of the sealing ring 27 will bring it into frictional contact with the fixed friction sealing ring 28, and the spring member 25 will store and release force to push the ring plate 26 and the dynamic friction sealing ring 27, so that the dynamic friction sealing ring 27 will continue to contact with the fixed friction sealing ring 28. The contact between the dynamic friction sealing ring 27 and the fixed friction sealing ring 28 is used for sealing. Compared with the rubber sealing ring in the prior art, the mechanical sealing structure of this design uses rubber or other elastic materials for the sealing ring during long-term use. These materials are prone to aging under high pressure and high temperature. After aging, the materials will harden and lose their elasticity, and thus cannot effectively fill the narrow gap between the inner rotating shaft and the outer shell. The mechanical seal used in this technology can effectively ensure the sealing effect through the contact between the dynamic friction sealing ring 27 and the fixed friction sealing ring 28, and can still ensure sealing under high temperature and high pressure conditions, thereby improving the practicality of the hydraulic slip ring. The structure of the sealing ring is inconvenient to disassemble the hydraulic slip ring when it needs to be replaced and maintained, which affects the efficiency of disassembly and maintenance. In the corresponding designed sealing component group 02, during long-term use, the tilting screw 22 can be unscrewed from the outer ring shell 21, and then the fixed slip ring component 11 and the sealing component group 02 can be opened. At this time, the fixed friction sealing ring 28 and the dynamic friction sealing ring 27 can be replaced. The fixed friction sealing ring 28 is connected to the fixed slip ring component 11 by screws, and the dynamic friction sealing ring 27 is connected to the ring plate 26 by screws. When replacing, the dynamic friction sealing ring 27 and the fixed friction sealing ring 28 can be replaced by directly removing the screws. After long-term use, the dynamic friction sealing ring 27 and the fixed friction sealing ring 28 will be worn, and because the spring member 25 continuously releases the stored force, it will ensure that the dynamic friction sealing ring 27 and the fixed friction sealing ring 28 still ensure friction contact and sealing. Compared with the operation of inconvenient maintenance of the sealing ring in the prior art, this design structure can quickly replace the dynamic friction sealing ring 27 and the fixed friction sealing ring 28.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A locking mechanism for a hydraulic slip ring, comprising a hydraulic slip ring body (01), wherein the hydraulic slip ring body (01) comprises a fixed slip ring component (11), wherein a movable slip ring component (12) is arranged inside the fixed slip ring component (11), and characterized in that: A sealing component group (02) is arranged inside the fixed slip ring component (11), and the sealing component group (02) is used to seal the gap between the movable slip ring component (12) and the fixed slip ring component (11). The sealing component group (02) comprises an outer ring shell (21), and a tilting screw (22) is arranged inside the outer ring shell (21). A movable ring frame (23) is arranged inside the outer ring shell (21), and a vertical screw member (24) is arranged inside the movable ring frame (23). A spring member (25) is arranged on the side of the movable ring frame (23), and a ring plate (26) is arranged at one end of the spring member (25). A dynamic friction seal ring (27) is arranged on the side of the ring plate (26), and a fixed friction seal ring (28) is arranged on the side of the dynamic friction seal ring (27).

2. The locking mechanism of a hydraulic slip ring according to claim 1, characterized in that: The sealing component groups (02) are provided in three groups, and the three sealing component groups (02) are distributed between the fixed slip ring components (11), and the three outer ring shells (21) are connected between the fixed slip ring components (11) via tilting screws (22).

3. The locking mechanism of a hydraulic slip ring according to claim 1, characterized in that: The vertical screw members (24) are provided in a plurality of groups, and the plurality of groups of vertical screw members (24) are evenly distributed on the moving ring frame (23); the moving ring frame (23) is provided with through holes at positions corresponding to the vertical screw members (24); the moving slip ring component (12) is provided with threaded holes at positions corresponding to the vertical screw members (24); the moving ring frame (23) and the moving slip ring component (12) are connected via the vertical screw members (24).

4. The locking mechanism of a hydraulic slip ring according to claim 1, characterized in that: The spring member (25), the ring plate (26), the dynamic friction seal ring (27) and the fixed friction seal ring (28) are provided in two groups, and the two groups of the spring member (25), the ring plate (26), the dynamic friction seal ring (27) and the fixed friction seal ring (28) are symmetrically distributed on both sides of the dynamic ring frame (23).

5. The locking mechanism of a hydraulic slip ring according to claim 1, characterized in that: One end of the spring member (25) is connected to the dynamic ring frame (23), and the other end of the spring member (25) is connected to the ring plate (26). The dynamic ring frame (23) is provided with a slide groove at a position corresponding to the ring plate (26) and the dynamic friction seal ring (27), and the dynamic ring frame (23) slides in contact with the ring plate (26) and the dynamic friction seal ring (27) through the slide groove.

6. The locking mechanism of a hydraulic slip ring according to claim 1, characterized in that: The side surface of the dynamic friction seal ring (27) is connected to the ring plate (26), and the other side of the dynamic friction seal ring (27) is in friction contact with the fixed friction seal ring (28).

7. The locking mechanism of a hydraulic slip ring according to claim 1, characterized in that: The fixed friction seal ring (28) is connected to the fixed slip ring component (11), and the dynamic ring frame (23) does not contact the fixed slip ring component (11).

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