CN214945387U - High-temperature-resistant piston rod sealing system of middle-high-end excavator - Google Patents
High-temperature-resistant piston rod sealing system of middle-high-end excavator Download PDFInfo
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- CN214945387U CN214945387U CN202022963478.8U CN202022963478U CN214945387U CN 214945387 U CN214945387 U CN 214945387U CN 202022963478 U CN202022963478 U CN 202022963478U CN 214945387 U CN214945387 U CN 214945387U
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Abstract
The utility model discloses a high temperature resistant type piston rod sealing system of middle and high-end excavator, including the piston rod body, the surface cover of piston rod body is equipped with the uide bushing, mounting groove and two ring channels, one of them have been seted up to the inside of uide bushing the inside of ring channel is provided with buffering sealing washer and first protection retaining ring, first protection retaining ring is located the centre of buffering sealing washer and corresponding ring channel, wherein another the inside of ring channel is provided with pole sealing washer and second protection retaining ring, second protection retaining ring is located the centre of pole sealing washer and corresponding ring channel, the inside of mounting groove is provided with dustproof sealing washer. The utility model discloses, through the cooperation between ring channel, buffering sealing washer, first protection retaining ring and the second protection retaining ring etc, realized the effective buffering to the pressure load impact of pole sealing washer, and then can restrain the wearing and tearing of pole sealing washer, improve the life of pole sealing washer, the experience of product is felt better.
Description
Technical Field
The utility model belongs to the technical field of the piston rod seal technique and specifically relates to a high temperature resistant type piston rod sealing system of middle and high-end excavator is related to.
Background
The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing component, and the piston rod is a movement component with frequent movement and high technical requirements. The piston rod is mainly used for hydraulic and pneumatic, engineering machinery, automobile manufacturing and the like.
According to the patent number CN206257275U, the name of the piston rod sealing system is that the piston rod sealing system comprises a piston rod, an oil cylinder cover, a dust ring, a guide belt I, U type ring, a Stent seal and a guide belt II, wherein the center of the oil cylinder cover is provided with a center hole; has the advantages of simple structure, convenient assembly and disassembly, etc.
But the device is too big to the pressure load impact of pole sealing washer, leads to pole sealing washer wearing and tearing serious, and life is lower, and the experience of product is felt relatively poor, and the practicality remains to improve. In view of the above, research and improvement are made to solve the existing problems, and a high temperature resistant piston rod sealing system for a middle and high-end excavator is provided, which can effectively solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a high-temperature resistant piston rod sealing system of a middle-high end excavator.
The utility model provides a scheme as follows of above-mentioned technical problem: high temperature resistant type piston rod sealing system of middle and high-end excavator, including the piston rod body, the surface cover of piston rod body is equipped with the uide bushing, mounting groove and two ring channels have been seted up to the inside of uide bushing, one of them the inside of ring channel is provided with buffering sealing washer and first protection retaining ring, first protection retaining ring is located the buffering sealing washer and corresponds the centre of ring channel, wherein another the inside of ring channel is provided with pole sealing washer and second protection retaining ring, second protection retaining ring is located the pole sealing washer and corresponds the centre of ring channel, the inside of mounting groove is provided with dust seal, the cell wall of mounting groove is connected with metal framework through sticky fixed, closely laminate between dust seal and the metal framework.
Further: one side that the uide bushing is close to buffering sealing washer is the oil pressure side, one side that the uide bushing is close to dust seal is the outside, buffering sealing washer, pole sealing washer and dust seal all adopt interference fit.
Further: the first protection retainer ring and the second protection retainer ring are both annular flat plates, and the size of the second protection retainer ring is larger than that of the first protection retainer ring.
Further: the sealing form of buffering sealing washer adopts the lip, the material of buffering sealing washer is heat-resisting polyurethane.
Further: the sealing form of the rod sealing ring adopts a lip shape, and the rod sealing ring is made of a polyurethane material.
Further: the sealing form of the dustproof sealing ring adopts a lip shape, and the dustproof sealing ring is made of general polyurethane.
The utility model discloses following beneficial effect has:
1. compared with the prior art, through the cooperation between ring channel, buffering sealing washer, first protection retaining ring and the second protection retaining ring etc. realized the effective buffering to the pressure load impact of pole sealing washer, and then can restrain the wearing and tearing of pole sealing washer, improve the life of pole sealing washer, the experience of product is felt better, and the practicality is higher.
2. Compared with the prior art, through the cooperation between mounting groove, metal framework and the dustproof sealing ring etc., can prevent effectively that outside dust or muddy water from invading, play certain guard action to inside buffering sealing ring and pole sealing ring, prolonged whole sealing system's life, it is stronger to have satisfied more demands suitability in the in-service use.
Drawings
Fig. 1 is a schematic view of the overall structure of the high temperature resistant piston rod sealing system of the middle and high-end excavator according to the present invention;
fig. 2 is a schematic view of an internal structure of a guide sleeve of the high-temperature resistant piston rod sealing system of the middle-high end excavator of the present invention;
fig. 3 is an enlarged view of the structure of fig. 2-a.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a piston rod body; 2. a guide sleeve; 3. mounting grooves; 4. an annular groove; 5. a buffer sealing ring; 6. a stem seal ring; 7. a dustproof sealing ring; 8. a first protective retainer ring; 9. a second protective retainer ring; 10. a metal skeleton.
Detailed Description
The technical solution 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 the illustrated examples are only used for explaining the present invention, but not for limiting the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-3, the utility model provides a high temperature resistant type piston rod sealing system of middle and high-end excavator: including piston rod body 1, the surface cover of piston rod body 1 is equipped with uide bushing 2, mounting groove 3 and two ring channels 4 have been seted up to the inside of uide bushing 2, the inside of one of them ring channel 4 is provided with buffering sealing washer 5 and first protection retainer ring 8, first protection retainer ring 8 is located buffering sealing washer 5 and corresponds ring channel 4's centre, wherein another ring channel 4's inside is provided with pole sealing washer 6 and second protection retainer ring 9, second protection retainer ring 9 is located pole sealing washer 6 and corresponds ring channel 4's centre, the inside of mounting groove 3 is provided with dust seal 7, the cell wall of mounting groove 3 is connected with metal framework 10 through sticky fixed, closely laminate between dust seal 7 and the metal framework 10. Wherein, the metal framework 10 can play a role of reinforcement and can ensure that the dustproof sealing ring 7 keeps the shape and the tension; meanwhile, the adhesive connection is adopted, so that the manufacturing is simple and the price is low.
Specifically, one side of the guide sleeve 2 close to the buffering seal ring 5 is an oil pressure side, one side of the guide sleeve 2 close to the dustproof seal ring 7 is an outer side, and the buffering seal ring 5, the rod seal ring 6 and the dustproof seal ring 7 are in interference fit. When in use, a buffer sealing ring 5, a rod sealing ring 6 and a dustproof sealing ring 7 are sequentially arranged from the hydraulic side to the outer side, and the rod sealing ring 6 is used as a main seal for preventing working oil from leaking to the outside; the buffer sealing ring 5 can buffer impact pressure or pressure change of the rod sealing ring 6 under high load, block high-temperature working oil from flowing into the rod sealing ring 6 side and improve the durability of the rod sealing ring 6; and the dustproof sealing ring 7 can effectively prevent external dust or muddy water from invading.
Specifically, the first protective retainer ring 8 and the second protective retainer ring 9 are both annular flat plates, and the size of the second protective retainer ring 9 is larger than that of the first protective retainer ring 8. When the anti-extrusion device is used, the first protection retainer ring 8 can play an effective protection role on the buffer sealing ring 5, and the second protection retainer ring 9 can play an effective protection role on the rod sealing ring 6, so that the anti-extrusion capacity of the rod sealing ring is enhanced, and the service life of the rod sealing ring is prolonged.
Specifically, the sealing form of the cushion seal ring 5 is lip-shaped, and the material of the cushion seal ring 5 is heat-resistant polyurethane of PPDI system having excellent heat resistance and strength. The sealing form of the rod seal ring 6 is lip-shaped, and the material of the rod seal ring 6 is a PPDI-system polyurethane material having excellent heat resistance, oil resistance, and rebound resilience. The sealing form of the dustproof sealing ring 7 adopts a lip shape, and the material of the dustproof sealing ring 7 is general polyurethane. When in use, the cushion seal ring 5 is mounted on the side closest to the pressure and exposed to high-pressure and high-temperature oil, so that heat-resistant polyurethane with excellent strength and heat resistance must be used, and the rod seal ring 6 is the most important component of the whole sealing system, so that a polyurethane material with excellent heat resistance, very low permanent pressure change and excellent rebound resilience must be used; meanwhile, the buffering sealing ring 5, the rod sealing ring 6 and the dustproof sealing ring 7 are all designed to be lip-shaped, so that the requirement for pressure increase or high temperature in recent years can be met, and the requirement for long service life is further met.
The utility model discloses a concrete theory of operation and application method do: when in use, a buffer sealing ring 5, a rod sealing ring 6 and a dustproof sealing ring 7 are sequentially arranged from the hydraulic side to the outer side, and the rod sealing ring 6 is used as a main seal for preventing working oil from leaking to the outside; the buffer sealing ring 5 can buffer impact pressure or pressure change of the rod sealing ring 6 under high load, block high-temperature working oil from flowing into the rod sealing ring 6 side and improve the durability of the rod sealing ring 6; the dustproof sealing ring 7 can effectively prevent external dust or muddy water from entering; in the use process, the first protective retainer ring 8 can play an effective protection role on the buffer sealing ring 5, and the second protective retainer ring 9 can play an effective protection role on the rod sealing ring 6, so that the service life of the whole sealing system is prolonged; simultaneously, the lip-shaped design of the buffer sealing ring 5, the rod sealing ring 6 and the dustproof sealing ring 7 are matched with different material characteristics, so that the requirement for pressure increase or high temperature in recent years can be met, more requirements in actual use are further met, and the practicability is higher.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.
Claims (6)
1. High temperature resistant type piston rod sealing system of middle and high end excavator, including piston rod body (1), its characterized in that: the outer surface of the piston rod body (1) is sleeved with a guide sleeve (2), the interior of the guide sleeve (2) is provided with a mounting groove (3) and two annular grooves (4), a buffer sealing ring (5) and a first protective retainer ring (8) are arranged in one of the annular grooves (4), the first protective retainer ring (8) is positioned between the buffer sealing ring (5) and the corresponding annular groove (4), wherein a rod sealing ring (6) and a second protective retainer ring (9) are arranged inside the other annular groove (4), the second protective retainer ring (9) is positioned between the rod sealing ring (6) and the corresponding annular groove (4), a dustproof sealing ring (7) is arranged in the mounting groove (3), the wall of the mounting groove (3) is fixedly connected with a metal framework (10) through gluing, the dustproof sealing ring (7) is tightly attached to the metal framework (10).
2. The high temperature resistant piston rod sealing system of a middle and high end excavator according to claim 1, characterized in that: the sealing form of buffering sealing washer (5) adopts the lip, the material of buffering sealing washer (5) is heat-resisting polyurethane.
3. The high temperature resistant piston rod sealing system of a middle and high end excavator according to claim 1, characterized in that: the sealing form of the rod sealing ring (6) adopts a lip shape.
4. The high temperature resistant piston rod sealing system of a middle and high end excavator according to claim 3, characterized in that: the rod sealing ring (6) is made of polyurethane material.
5. The high temperature resistant piston rod sealing system of a middle and high end excavator according to claim 1, characterized in that: the sealing form of the dustproof sealing ring (7) adopts a lip shape.
6. The high temperature resistant piston rod sealing system of a middle and high end excavator according to claim 5, characterized in that: the dustproof sealing ring (7) is made of general polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963478.8U CN214945387U (en) | 2020-12-10 | 2020-12-10 | High-temperature-resistant piston rod sealing system of middle-high-end excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963478.8U CN214945387U (en) | 2020-12-10 | 2020-12-10 | High-temperature-resistant piston rod sealing system of middle-high-end excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214945387U true CN214945387U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022963478.8U Active CN214945387U (en) | 2020-12-10 | 2020-12-10 | High-temperature-resistant piston rod sealing system of middle-high-end excavator |
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|---|---|
| CN (1) | CN214945387U (en) |
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- 2020-12-10 CN CN202022963478.8U patent/CN214945387U/en active Active
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