A pincer tool for disassembling a YX seal ring cover for a shaft
By designing a clamp-shaped tool with a hinged connection and a chuck structure protected by a rubber sleeve, a simple, safe, and time-saving disassembly of the YX sealing ring cover for shafts was achieved. This solves the problem that traditional tools are difficult to adapt to covers of different models and materials, and improves disassembly efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-26
AI Technical Summary
In the existing technology, the disassembly of the YX sealing ring cover for shaft is complicated, time-consuming and labor-intensive, and can easily lead to deformation of the cover or damage to the sealing groove. The operation space is limited and the safety is poor. In addition, traditional tools are difficult to adapt to covers of different models and materials.
Design a plier tool including a first plier handle and a second plier handle, equipped with a first chuck and a second chuck, which are connected by a hinge and protected by a rubber sleeve. The lever principle is used to make the chuck accurately embed into the gap of the sealing ring, apply a pulling force to remove the pressure cap, and combine spring-assisted opening and closing and arc design to distribute the force evenly.
It enables simple, time-saving, and labor-saving disassembly, avoids deformation of the gland or damage to the sealing groove, reduces maintenance costs, ensures operating space and operational safety, adapts to the disassembly of glands of different models and materials, and features a simple structure, unrestricted operating space, and operational safety.
Smart Images

Figure CN224407309U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disassembly tools, and more specifically, to a pliers-shaped tool for disassembling the YX sealing ring cover for shafts. Background Technology
[0002] In the field of mechanical equipment maintenance, the disassembly of the upper end cap of the YX seal ring for shafts is a routine operation. However, due to the precision of the sealing structure and the complexity of the working environment, it has become a key factor restricting the efficiency and quality of maintenance. In addition to the structural damage and limited operating space issues mentioned above, traditional disassembly methods also have many other significant drawbacks.
[0003] From an operational efficiency perspective, using ordinary pliers or pry bars to forcibly pry often requires repeated adjustments to the angle and force due to the lack of targeted force application point design. This not only prolongs the maintenance time for a single piece of equipment, but also amplifies the inefficiency in batch equipment maintenance scenarios, directly affecting the resumption of production line operations. In terms of safety, tools are prone to slippage during forced prying. If the operator's hand collidees with the tool or equipment parts, it may cause personal injury. At the same time, slipping tools may also impact surrounding precision components, causing secondary equipment damage and further expanding the maintenance scope and cost. In addition, traditional tools have poor versatility. Different models and specifications of shaft YX sealing ring upper caps differ in size and edge structure, making it difficult for conventional tools to achieve precise adaptation. To complete disassembly, operators often need to temporarily modify tools or use multiple tools in combination, which not only increases the complexity of the operation but may also exacerbate problems such as cap deformation and sealing groove wear due to tool incompatibility with the cap.
[0004] More notably, when the gland becomes rusted, oily, or slightly stuck to the sealing groove due to long-term use, the drawbacks of traditional disassembly methods become more prominent. Forcing the gland apart not only fails to separate it smoothly but may also cause rust fragments to fall into the equipment, contaminating the lubrication system or jamming moving parts, creating potential hazards for the subsequent operation of the equipment. For glands made of special materials (such as high-strength alloys), traditional tools are not hard enough and are prone to chipping or deformation of the tool edge, further reducing the feasibility of disassembly operations. Utility Model Content
[0005] The present invention aims to provide a pliers tool for disassembling the YX sealing ring cover of a shaft, so as to solve the problems of complex disassembly, easy deformation of the cover or damage to the sealing groove, time-consuming and laborious, easy damage to the sealing structure, limited operating space and easy damage to the shaft surface or hole wall in the prior art.
[0006] The embodiments of this utility model are implemented as follows:
[0007] This utility model embodiment provides a plier tool for disassembling the YX sealing ring cover for shafts, which includes a first plier handle and a second plier handle;
[0008] The first clamp and the second clamp are symmetrically distributed. The first clamp and the second clamp have a first pawl and a second pawl at the same end, respectively. The first pawl and the second pawl are far apart from each other and symmetrically distributed.
[0009] The first clamp handle and the second clamp handle are hinged together.
[0010] In use, the operator grasps the first and second clamp handles to separate them, thereby bringing the first and second jaws together tightly. Then, the first and second jaws are aligned with the annular gap of the aged YX sealing ring. At this point, the operator grips the first and second clamp handles tightly, causing the first and second jaws to separate and precisely embed into the annular gap of the aged YX sealing ring, forming a firm engagement. Finally, while maintaining the grip, an upward pulling force is applied to ensure the cap is safely and securely removed.
[0011] The pliers tool disclosed in this embodiment for disassembling the cover of a YX seal ring for shafts has a first jaw and a second jaw that are separated from each other at the front end of the tool. This allows the tool to be precisely inserted into the annular gap of the aged YX seal ring and then pulled out along with the cover, avoiding damage to the cover. As a result, the pliers tool for disassembling the cover of a YX seal ring for shafts has the advantages of simple structure, simple operation, time and labor saving, less likely to cause deformation of the cover or damage to the sealing groove, low maintenance cost, unrestricted operating space, and avoidance of damage to the shaft surface or hole wall.
[0012] Optionally: Both the first clamp handle and the second clamp handle are arc-shaped structures, and the arc shapes of the first clamp handle and the second clamp handle are opposite to each other.
[0013] This configuration facilitates the opening and closing of the first and second clamp handles, thereby driving the first and second jaws to open and close, which is beneficial for removing the pressure cap.
[0014] Optionally, a first rubber sleeve and a second rubber sleeve are respectively fitted on the outer walls of the first clamp handle and the second clamp handle, and the outer surfaces of the first rubber sleeve and the second rubber sleeve have several anti-slip ridges.
[0015] With this design, the first rubber sleeve and the second rubber sleeve effectively protect the first and second pliers, preventing them from rusting. At the same time, they improve the gripping comfort of the first and second pliers, increase the gripping friction, and make it easier to grip the first and second pliers for opening and closing.
[0016] Optionally, the first rubber sleeve and the second rubber sleeve have an adhesive layer on the contact surfaces with the first clamp handle and the second clamp handle.
[0017] This configuration further enhances the connection strength between the first and second rubber sleeves and the first and second clamp handles, preventing the first and second rubber sleeves from accidentally falling off.
[0018] Optionally: the first clamp and the second clamp respectively have a first jaw and a second jaw at the same end, and the first jaw and the second jaw are hinged to each other.
[0019] With this configuration, the first jaw and the second jaw are hinged together, thereby enabling the first jaw and the second jaw to open and close stably.
[0020] Optionally, a spring is provided between the first jaw and the second jaw near one end of the first jaw and the second jaw, respectively, with one end of the spring elastically fixed to the first jaw and the other end of the spring elastically fixed to the second jaw.
[0021] With this configuration, the spring provides lifting force, which helps the first and second jaws to come closer together. When the operator is using the device, the separation of the first and second jaws no longer requires much manual opening. The spring can assist in opening them, causing the first and second jaws to come closer together in the initial stage of gripping. This facilitates precise insertion into the annular gap of the aged YX sealing ring, enabling the removal of the sealing cap.
[0022] Optionally, the first jaw and the second jaw, at the ends away from the first handle and the second handle, respectively have a first jaw and a second jaw, the first jaw and the second jaw being parallel to each other and closely attached to each other.
[0023] With this configuration, the first and second jaws are advantageous for the pliers to work in narrow or deep hole environments, allowing the first and second jaws to be precisely positioned for easy disassembly.
[0024] Optionally, the first jaw and the second jaw are respectively vertically fixed to the end of the first jaw and the second jaw away from the first jaw and the second jaw.
[0025] This configuration allows the pulling force to be converted into a uniformly distributed radial expansion force, gripping the cap tightly while pulling it out, thus preventing damage to the cap.
[0026] Optionally, the opening and closing planes of the first and second jaws are the same as the opening and closing planes of the first and second jaws.
[0027] This configuration allows the first and second claws to exert radial expansion force, facilitating their precise insertion into the annular gap of the aged YX sealing ring, forming a firm engagement and positioning, and thus making it easier to remove the gland.
[0028] Optionally, the first and second jaws described above are arc-shaped structures.
[0029] With this configuration, the first and second claws are designed in an arc shape, which will convert the pulling force into a uniformly distributed radial expansion force, effectively preventing the cap from deforming due to uneven force during disassembly.
[0030] In summary, the pliers tool disclosed in this utility model for disassembling the YX sealing ring cover of a shaft has the advantages of simple structure, simple operation, time and labor saving, less likely to cause deformation of the cover or damage to the sealing groove, low maintenance cost, unrestricted operating space, and avoidance of damage to the shaft surface or hole wall. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of a pliers tool for disassembling a YX sealing ring cover for a shaft, according to an embodiment of the present invention;
[0033] Figure 2 This is a schematic diagram of the gland structure for disassembling a YX sealing ring gland using a pliers tool according to an embodiment of the present invention.
[0034] Icons: 1-First handle, 2-Second handle, 3-First jaw, 4-Second jaw, 5-First rubber sleeve, 6-Second rubber sleeve, 7-First jaw, 8-Second jaw, 9-Spring, 10-First head, 11-Second head, 12-Pressure cap, 13-Small hole, 14-YX sealing ring. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0037] Example
[0038] See Figure 1 This embodiment proposes a plier tool for disassembling the YX sealing ring cover for shafts, including a first plier handle 1 and a second plier handle 2;
[0039] The first clamp handle 1 and the second clamp handle 2 are symmetrically distributed. The same end of the first clamp handle 1 and the second clamp handle 2 has a first pawl 3 and a second pawl 4, respectively. The first pawl 3 and the second pawl 4 are far apart from each other and symmetrically distributed.
[0040] The first clamp handle 1 and the second clamp handle 2 are hinged together.
[0041] In use, the operator grasps the first clamp handle 1 and the second clamp handle 2 to separate them, thereby bringing the first claw 3 and the second claw 4 together. Then, the first claw 3 and the second claw 4 are aligned with the annular gap of the aged YX sealing ring. At this time, the operator grips the first clamp handle 1 and the second clamp handle 2 tightly, and the first claw 3 separates from the second claw 4, accurately embedding into the annular gap of the aged YX sealing ring to form a firm engagement. Finally, while maintaining the grip, an upward pulling force is applied to ensure that the cap is safely and securely removed.
[0042] The pliers tool disclosed in this embodiment for disassembling the cover of a YX seal ring for shafts has a first jaw 3 and a second jaw 4 that are separated from each other at the front end of the tool. This allows the tool to be precisely inserted into the annular gap of the aged YX seal ring, and then pulled out along with the cover, avoiding damage to the cover. As a result, the pliers tool for disassembling the cover of a YX seal ring for shafts has the advantages of simple structure, simple operation, time and labor saving, less likely to cause deformation of the cover or damage to the sealing groove, low maintenance cost, unrestricted operating space, and avoidance of damage to the shaft surface or hole wall.
[0043] See Figure 1 Both the first clamp handle 1 and the second clamp handle 2 are arc-shaped structures. The arc shapes of the first clamp handle 1 and the second clamp handle 2 are opposite to each other. This facilitates the opening and closing of the first clamp handle 1 and the second clamp handle 2, thereby driving the first chuck 3 and the second chuck 4 to open and close, which is beneficial for removing the pressure cap.
[0044] A first rubber sleeve 5 and a second rubber sleeve 6 are respectively fitted on the outer walls of the first clamp handle 1 and the second clamp handle 2. The outer surfaces of the first rubber sleeve 5 and the second rubber sleeve 6 have several anti-slip ridges (not shown in the figure). The first rubber sleeve 5 and the second rubber sleeve 6 effectively protect the first clamp handle 1 and the second clamp handle 2, prevent the first clamp handle 1 and the second clamp handle 2 from rusting, and at the same time improve the gripping comfort of the first clamp handle 1 and the second clamp handle 2, increase the gripping friction of the first clamp handle 1 and the second clamp handle 2, and make it easier to grip the first clamp handle 1 and the second clamp handle 2 to open and close.
[0045] The first rubber sleeve 5 and the second rubber sleeve 6 have an adhesive layer (not shown in the figure) on the contact surfaces with the first clamp handle 1 and the second clamp handle 2. This further improves the connection strength between the first rubber sleeve 5 and the second rubber sleeve 6 and the first clamp handle 1 and the second clamp handle 2, and prevents the first rubber sleeve 5 and the second rubber sleeve 6 from accidentally falling off.
[0046] See Figure 1 The first clamp handle 1 and the second clamp handle 2 have a first jaw 7 and a second jaw 8 at the same end, respectively. The first jaw 7 and the second jaw 8 are hinged to each other. The first jaw 7 and the second jaw 8 realize the hinged connection between the first clamp handle 1 and the second clamp handle 2, thereby realizing the stable opening and closing of the first chuck 3 and the second chuck 4.
[0047] A spring 9 is provided between the first jaw 7 and the second jaw 8 near the ends of the first jaw 1 and the second jaw 2. One end of the spring 9 is elastically fixed to the first jaw 7, and the other end of the spring 9 is elastically fixed to the second jaw 8. The spring 9 provides lifting force to facilitate the first jaw 3 and the second jaw 4 to move closer together. When the operator is using it, the movement of the first jaw 1 and the second jaw 2 separating from each other no longer requires much manual opening. The spring 9 can assist in opening, so that the first jaw 3 and the second jaw 4 are close to each other in the initial stage of clamping, which is convenient for precise insertion into the annular gap of the aged YX sealing ring, so as to realize the disassembly of the sealing cap.
[0048] See Figure 1 The first jaw 7 and the second jaw 8 have a first jaw 10 and a second jaw 11 at the ends away from the first jaw handle 1 and the second jaw handle 2, respectively. The first jaw 10 and the second jaw 11 are parallel to each other and closely attached to each other. The first jaw 10 and the second jaw 11 are conducive to the operation of the pliers in narrow or deep hole environments, so that the first jaw 3 and the second jaw 4 can be accurately positioned, which facilitates disassembly.
[0049] The first jaw 3 and the second jaw 4 are respectively vertically fixed to the ends of the first jaw 10 and the second jaw 11 away from the first jaw 7 and the second jaw 8. This way, the pulling force can be converted into a uniformly distributed radial expansion force, which can grip the cap and pull it out while avoiding damage to the cap.
[0050] See Figure 1 The opening and closing planes of the first jaw 3 and the second jaw 4 are the same as the opening and closing planes of the first clamp 1 and the second clamp 2. This allows the first jaw 3 and the second jaw 4 to achieve radial expansion force, making it easier for the first jaw 3 and the second jaw 4 to accurately embed into the annular gap of the aged YX sealing ring, forming a firm bite and positioning, and thus facilitating the removal of the pressure cap.
[0051] The first claw 3 and the second claw 4 are arc-shaped structures. The arc shape of the first claw 3 and the second claw 4 will convert the pulling force into a uniformly distributed radial expansion force, which will effectively prevent the cover from deforming due to uneven force during disassembly.
[0052] See Figure 1 The specific operating principle of the pliers tool used to remove the YX seal ring cover for the shaft in this embodiment is as follows:
[0053] When the operator grips the first clamp handle 1 and the second clamp handle 2, the first clamp head 10 and the second clamp head 11 automatically open through the lever principle. At this time, the two specially designed first claw 3 and second claw 4 will accurately embed into the annular gap of the aged YX sealing ring, forming a firm bite and positioning. When an upward pulling force is applied while maintaining the grip, the arc design of the first claw 3 and the second claw 4 will convert the pulling force into a uniformly distributed radial expansion force. The elastic properties of the sealing ring itself can effectively absorb part of the removal impact force, which facilitates the implementation of the protection mechanism and avoids damage to the cap. Through the dual protection design of uniform force and elastic buffer, it is ensured that the cap is subjected to balanced force during disassembly, preventing deformation. The material properties of the sealing ring are used to absorb vibration and avoid hard damage.
[0054] See Figure 2 In this embodiment, the sealing ring cover 12 is a relatively smooth cylinder, with the YX sealing ring 14 pressed against its bottom. There is a small hole 13 in the middle of the sealing ring cover 12. A pliers tool is inserted into the small hole 13, so that the first claw 3 and the second claw 4 are embedded in the bottom surface of the cover, thereby facilitating the removal of the cover 12 without damage.
[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A pliers-shaped tool for disassembling a YX sealing ring cover for a shaft, characterized in that: Includes a first clamp handle (1) and a second clamp handle (2); The first clamp handle (1) and the second clamp handle (2) are symmetrically distributed. The first clamp handle (1) and the second clamp handle (2) have a first pawl (3) and a second pawl (4) at the same end, respectively. The first pawl (3) and the second pawl (4) are far apart from each other and symmetrically distributed. The first clamp handle (1) and the second clamp handle (2) are hinged to each other.
2. A pliers tool for disassembling a YX sealing ring cover for a shaft according to claim 1, characterized in that: Both the first clamp handle (1) and the second clamp handle (2) are arc-shaped structures, and the arc shapes of the first clamp handle (1) and the second clamp handle (2) are opposite to each other.
3. A pliers tool for disassembling a YX sealing ring cover for a shaft according to claim 1, characterized in that: The outer walls of the first clamp handle (1) and the second clamp handle (2) are respectively fitted with a first rubber sleeve (5) and a second rubber sleeve (6), and the outer surfaces of the first rubber sleeve (5) and the second rubber sleeve (6) have several anti-slip ridges.
4. A pliers tool for disassembling a YX sealing ring cover for a shaft according to claim 3, characterized in that: The first rubber sleeve (5) and the second rubber sleeve (6) have an adhesive layer on the contact surfaces with the first clamp handle (1) and the second clamp handle (2).
5. A pliers tool for disassembling a YX seal ring cover for a shaft, as described in claim 4, characterized in that: The first clamp handle (1) and the second clamp handle (2) have a first jaw (7) and a second jaw (8) at the same end, respectively, and the first jaw (7) and the second jaw (8) are hinged to each other.
6. A pliers tool for disassembling a YX seal ring cover for a shaft, as described in claim 5, characterized in that: A spring (9) is provided between the first jaw (7) and the second jaw (8) near the end of the first jaw (1) and the second jaw (2). One end of the spring (9) is elastically fixed to the first jaw (7), and the other end of the spring (9) is elastically fixed to the second jaw (8).
7. A pliers tool for disassembling a YX seal ring cover for a shaft, as described in claim 5, characterized in that: The first jaw (7) and the second jaw (8) have a first jaw (10) and a second jaw (11) respectively at the ends away from the first jaw handle (1) and the second jaw handle (2), and the first jaw (10) and the second jaw (11) are parallel to each other and closely attached to each other.
8. A pliers tool for disassembling a YX seal ring cover for a shaft according to claim 7, characterized in that: The first jaw (3) and the second jaw (4) are respectively vertically fixed on the ends of the first jaw (10) and the second jaw (11) away from the first jaw (7) and the second jaw (8).
9. A pliers tool for disassembling a YX sealing ring cover for a shaft according to claim 1, characterized in that: The opening and closing planes of the first jaw (3) and the second jaw (4) are the same as the opening and closing planes of the first clamp handle (1) and the second clamp handle (2).
10. A pliers tool for disassembling a YX seal ring cover for a shaft according to claim 1, characterized in that: The first claw (3) and the second claw (4) are arc-shaped structures.