CN113399994A - Oil cylinder piston rod groove sealing assembly tool - Google Patents
Oil cylinder piston rod groove sealing assembly tool Download PDFInfo
- Publication number
- CN113399994A CN113399994A CN202110726133.7A CN202110726133A CN113399994A CN 113399994 A CN113399994 A CN 113399994A CN 202110726133 A CN202110726133 A CN 202110726133A CN 113399994 A CN113399994 A CN 113399994A
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- CN
- China
- Prior art keywords
- steel cylinder
- connecting flange
- oil cylinder
- piston rod
- rod
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- Pending
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/08—Machines for placing washers, circlips, or the like on bolts or other members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/08—Machines for placing washers, circlips, or the like on bolts or other members
- B23P19/084—Machines for placing washers, circlips, or the like on bolts or other members for placing resilient or flexible rings, e.g. O-rings, circlips
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to a groove sealing assembly tool for a piston rod of an oil cylinder, which is provided with a steel cylinder, wherein two ends of the steel cylinder are communicated with an opening, one end of the steel cylinder is provided with a connecting flange, a double-end screw rod is arranged at the central axis of the steel cylinder, one end of the double-end screw rod, which is positioned on the connecting flange, is connected with a taper pin component, the other end of the double-end screw rod extends out of the end part of the steel cylinder and is provided with a drawing nut for assembling a sealing element of a piston groove, the outer diameter of the drawing nut is larger than the inner diameter of a through hole at the end; a set of expanding pusher dog mechanism is movably hinged on the connecting flange plate along the circumference, and one end of the expanding pusher dog mechanism is hinged on the connecting flange plate; the seal assembly tool of the invention thoroughly solves the problem of difficult GKD seal assembly, greatly reduces the difficulty and strength of assembly work, is particularly suitable for popularization and use in hydraulic and oil cylinder repair industries, and provides powerful technical support for localization of some key sealing elements.
Description
Technical Field
The invention relates to the technical field of metallurgical hydraulic tool equipment, in particular to a groove sealing assembling tool for a piston rod of an oil cylinder.
Background
The cylinder piston seal used in the metallurgical industry is widely a GKD type combined seal, and the seal has the characteristics of simple structure, easy processing, reliable seal, high temperature and pressure resistance and impact load resistance.
Due to the special groove design of the seal, the requirement on the material of the seal is very strict, the material is too soft, the strength is insufficient, the abrasion of the seal is fast, and the service life is short; the material selection is too hard, so that the assembly is difficult, and the diameter d of the GKD sealing inner ring needs to be expanded to a certain degree from the diameter of the piston rod and then can be pushed into the groove. The whole assembly process is very difficult, and due to improper seal assembly methods, especially after most of the seals are manufactured in China nowadays, the improper selection of the seal material causes the plastic deformation of the seal beyond the elastic limit, so that the seal fails.
Therefore, it is necessary to effectively solve the problem of sealing assembly of the piston rod.
Disclosure of Invention
The invention aims to provide a cylinder piston rod groove sealing assembly tool aiming at the situation, which is a brand-new device for assembling the cylinder piston rod groove sealing element, and has the advantages of simple design, exquisite and simple structure and good use effect.
The specific scheme of the invention is as follows: an oil cylinder piston rod groove sealing assembly tool comprises a steel cylinder, wherein two ends of the steel cylinder penetrate through an opening, one end of the steel cylinder is provided with a connecting flange, a double-end screw rod is arranged at the central axis of the steel cylinder, one end, positioned on the connecting flange, of the double-end screw rod is connected with a taper pin component, the other end of the double-end screw rod extends out of the end part of the steel cylinder, a drawing nut for assembling a piston groove sealing element is arranged on the double-end screw rod, the outer diameter of the drawing nut is larger than the inner diameter of a through hole in the end part of the steel cylinder, and one end face of the drawing nut abuts against the end face of the steel cylinder; and the connecting flange plate is movably hinged with a set of expanding push claw mechanism along the circumference, one end of the expanding push claw mechanism is hinged on the connecting flange plate, and the other end of the expanding push claw mechanism is sleeved at the small end of the taper pin component.
Furthermore, the taper pin part comprises a taper pin and a guide polished rod, the small-diameter end of the taper pin is connected with the guide polished rod into a whole, the guide polished rod is inserted into the steel cylinder, the outer diameter of the guide polished rod is matched with the inner diameter of the steel cylinder and is in sliding contact with the steel cylinder, and the center of the end part of the inner side of the guide polished rod is in threaded connection with the double-end lead screw.
Furthermore, the center of the end face of the large-diameter end of the taper pin is also provided with an inwards concave circular sinking platform, and the inwards concave circular sinking platform is in matched butt joint with the end face of the piston rod of the oil cylinder.
Furthermore, the expansion claw pushing mechanism comprises a plurality of push rods which are uniformly distributed along the circumference of the connecting flange plate, one end of each push rod is hinged to the connecting flange plate, the other end of each push rod is provided with a claw head, and the diameter of each claw head is larger than that of the connecting part of the corresponding push rod; and the pre-tightening O-shaped rings are sleeved at the connecting parts of all the push rods and the corresponding claw heads.
Furthermore, the outer side end face of the claw head is a flat surface.
Furthermore, four push rods are arranged in the novel push rod device, and the four push rods are uniformly distributed in an annular shape.
The seal assembly tool of the invention thoroughly solves the problem of difficult GKD seal assembly, greatly reduces the difficulty and strength of assembly work, is particularly suitable for popularization and use in hydraulic and oil cylinder repair industries, and provides powerful technical support for localization of some key sealing elements.
Drawings
FIG. 1 is a schematic main sectional view of the overall structure of the present invention;
FIG. 2 is a schematic main sectional structure view of a connection structure of a steel cylinder and an expanding push claw mechanism in the invention.
In the figure: the device comprises a concave circular sinking platform, a taper pin, a claw head, a pre-tightening O-shaped ring, a guide polish rod, a push rod, a steel cylinder, a double-head screw rod, a drawing nut and a connecting flange plate, wherein the concave circular sinking platform is arranged at 1 part, the taper pin is arranged at 2 part, the claw head is arranged at 3 part, the pre-tightening O-shaped ring is arranged at 4 part, the guide polish rod is arranged at 5 part, the push rod is arranged at 6 part, the steel cylinder is arranged at 7 part, the double-head screw rod is arranged at 8 part, the drawing nut is arranged at 9 part, and the connecting flange plate is arranged at 10 part.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are only used for convenience in describing the present invention or simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, or be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the 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.
Referring to fig. 1 and 2, the invention relates to an oil cylinder piston rod groove sealing assembly tool, which comprises a steel cylinder 7, wherein two ends of the steel cylinder are communicated with an opening, one end of the steel cylinder is provided with a connecting flange 10, a double-end screw 8 is arranged at the central axis of the steel cylinder, one end of the double-end screw, which is positioned on the connecting flange, is connected with a taper pin component, the other end of the double-end screw extends out of the end part of the steel cylinder and is provided with a drawing nut 9 for assembling a piston groove sealing element, the outer diameter of the drawing nut is larger than the inner diameter of a through hole at the end part of the steel cylinder, and one end face of the drawing nut is abutted against the end face of the steel cylinder 7; and a set of expansion claw pushing mechanism is movably hinged on the connecting flange plate along the circumference, one end of the expansion claw pushing mechanism is hinged on the connecting flange plate 10, and the other end of the expansion claw pushing mechanism is sleeved at the small end of the taper pin component.
Furthermore, in this embodiment, the taper pin component includes a taper pin 2 and a guide polish rod 5, the small diameter end of the taper pin is connected with the guide polish rod into a whole, the guide polish rod is inserted into the steel cylinder, the outer diameter of the guide polish rod is matched with the inner diameter of the steel cylinder and is in sliding contact with the steel cylinder, and the center of the end part of the inner side of the guide polish rod is in threaded connection with the double-end lead screw.
Further, in this embodiment, the end face center of the large-diameter end of the taper pin is further provided with an inward concave circular sinking platform 1, and the inward concave circular sinking platform is in matched butt joint with the end face of the piston rod of the oil cylinder.
Furthermore, in this embodiment, the expanding claw pushing mechanism includes a plurality of push rods 6 uniformly distributed along the circumference of the connecting flange, one end of each push rod is hinged to the connecting flange, the other end of each push rod is provided with a claw head 3, and the diameter of each claw head is larger than that of the connecting portion of the corresponding push rod; and a pre-tightening O-shaped ring 4 is also arranged and is sleeved at the connecting part of all the push rods and the corresponding claw heads.
Further, in this embodiment, the outer end surface of the claw head is a flat surface.
Furthermore, in this embodiment, the push rods are four, and the four push rods are uniformly distributed in an annular shape.
The small diameter end of the taper pin in the embodiment is arranged into an integrated structure with the guide polish rod.
The method comprises the following specific using steps: before the oil cylinder piston rod butt joint device is used, the end face of the oil cylinder piston rod is assembled to the concave circular sinking platform to be in butt joint, and then the following operation is carried out.
Firstly, a guide polished rod of a taper pin component is in threaded connection and matching with a double-head screw rod to be installed in place.
And secondly, sleeving the GKD45 sealing inner ring on the small end of the taper pin.
And thirdly, the steel cylinder is sleeved on the guide polished rod, and the push rods and the claw heads are sleeved at the small-diameter end of the taper pin, so that the end surfaces of the four claw heads are simultaneously abutted to the sealing inner ring.
And fourthly, gradually screwing the drawing nut into the other end of the double-end screw rod until the sealing inner ring expands and advances along the conical surface of the taper pin within the elastic range of the sealing inner ring by using the four claw heads pre-tightened by the pre-tightening O-shaped rings. Until the end part with the large diameter of the taper pin is jacked into the groove of the piston rod, the design purpose is achieved.
The taper of the taper pin is designed according to the sizes of the GKD sealing inner ring and the groove on the piston rod, different taper pins are required to be designed according to different types of the sealing inner ring, but other parts in the taper pin do not need to be modified; the size of the concave circular sinking platform is designed according to the diameter of the piston rod of the oil cylinder, and is not described again.
The seal assembly tool of the invention thoroughly solves the problem of difficult GKD seal assembly, greatly reduces the difficulty and strength of assembly work, is particularly suitable for popularization and use in hydraulic and oil cylinder repair industries, and provides powerful technical support for localization of some key sealing elements.
Claims (6)
1. The utility model provides an oil cylinder piston rod groove seal assembling tool which characterized in that: the piston groove sealing device is provided with a steel cylinder, two ends of the steel cylinder penetrate through an opening, one end of the steel cylinder is provided with a connecting flange, a double-end lead screw is arranged at the central axis of the steel cylinder, one end, positioned on the connecting flange, of the double-end lead screw is connected with a taper pin component, the other end of the double-end lead screw extends out of the end part of the steel cylinder and is provided with a drawing nut for assembling a piston groove sealing element, the outer diameter of the drawing nut is larger than the inner diameter of a through hole in the end part of the steel cylinder, and one end face; and the connecting flange plate is movably hinged with a set of expanding push claw mechanism along the circumference, one end of the expanding push claw mechanism is hinged on the connecting flange plate, and the other end of the expanding push claw mechanism is sleeved at the small end of the taper pin component.
2. The tool for assembling the groove seal of the piston rod of the oil cylinder according to claim 1, wherein: the taper pin component comprises a taper pin and a guide polished rod, the small-diameter end of the taper pin is connected with the guide polished rod into a whole, the guide polished rod is inserted into the steel cylinder, the outer diameter of the guide polished rod is matched with the inner diameter of the steel cylinder and is in sliding contact with the steel cylinder, and the center of the end part of the inner side of the guide polished rod is in threaded connection with the double-end lead screw.
3. The tool for assembling the groove seal of the piston rod of the oil cylinder according to claim 2, wherein: the center of the end face of the large-diameter end of the taper pin is also provided with an inwards concave circular sinking platform, and the inwards concave circular sinking platform is in matched butt joint with the end face of the piston rod of the oil cylinder.
4. The tool for assembling the groove seal of the piston rod of the oil cylinder according to claim 1, wherein: the expansion claw pushing mechanism comprises a plurality of push rods which are uniformly distributed along the circumference of the connecting flange plate, one end of each push rod is hinged to the connecting flange plate, the other end of each push rod is provided with a claw head, and the diameter of each claw head is larger than that of the connecting part of the corresponding push rod; and the pre-tightening O-shaped rings are sleeved at the connecting parts of all the push rods and the corresponding claw heads.
5. The tool for assembling the groove seal of the piston rod of the oil cylinder according to claim 4, wherein: the outer side end face of the claw head is a straight face.
6. The tool for assembling the groove seal of the piston rod of the oil cylinder according to claim 4, wherein: the push rods are four and are uniformly distributed in an annular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726133.7A CN113399994A (en) | 2021-06-29 | 2021-06-29 | Oil cylinder piston rod groove sealing assembly tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726133.7A CN113399994A (en) | 2021-06-29 | 2021-06-29 | Oil cylinder piston rod groove sealing assembly tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113399994A true CN113399994A (en) | 2021-09-17 |
Family
ID=77680038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110726133.7A Pending CN113399994A (en) | 2021-06-29 | 2021-06-29 | Oil cylinder piston rod groove sealing assembly tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113399994A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069465A (en) * | 2011-01-24 | 2011-05-25 | 国营红峰机械厂 | Installation tool of O-shaped ring |
| CN102729199A (en) * | 2012-07-24 | 2012-10-17 | 宁波绿之源工具有限公司 | Assembly tool for O-shaped sealing ring |
| CN203566622U (en) * | 2013-11-14 | 2014-04-30 | 内蒙古第一机械集团有限公司 | Elastic press-fitting device of seal ring of piston |
| CN203726436U (en) * | 2014-01-23 | 2014-07-23 | 上海日轮汽车配件有限公司 | O-shaped ring installation tool |
| CN203818079U (en) * | 2014-05-20 | 2014-09-10 | 尤亮 | Seal ring assembly mechanism |
| CN211681879U (en) * | 2020-01-02 | 2020-10-16 | 怀来欧洛普橡塑技术开发有限公司 | Sealing washer erecting tool |
| CN212690505U (en) * | 2020-08-05 | 2021-03-12 | 湖南大华机械有限公司 | Piston rod convenient to installation |
-
2021
- 2021-06-29 CN CN202110726133.7A patent/CN113399994A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069465A (en) * | 2011-01-24 | 2011-05-25 | 国营红峰机械厂 | Installation tool of O-shaped ring |
| CN102729199A (en) * | 2012-07-24 | 2012-10-17 | 宁波绿之源工具有限公司 | Assembly tool for O-shaped sealing ring |
| CN203566622U (en) * | 2013-11-14 | 2014-04-30 | 内蒙古第一机械集团有限公司 | Elastic press-fitting device of seal ring of piston |
| CN203726436U (en) * | 2014-01-23 | 2014-07-23 | 上海日轮汽车配件有限公司 | O-shaped ring installation tool |
| CN203818079U (en) * | 2014-05-20 | 2014-09-10 | 尤亮 | Seal ring assembly mechanism |
| CN211681879U (en) * | 2020-01-02 | 2020-10-16 | 怀来欧洛普橡塑技术开发有限公司 | Sealing washer erecting tool |
| CN212690505U (en) * | 2020-08-05 | 2021-03-12 | 湖南大华机械有限公司 | Piston rod convenient to installation |
Non-Patent Citations (1)
| Title |
|---|
| 张蕊华等: "《机械本体结构设计及应用》", 30 September 2019, 复旦大学出版社 * |
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Application publication date: 20210917 |
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| RJ01 | Rejection of invention patent application after publication |