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CN-224229238-U - Withstand voltage polyether ether ketone sealing ring for excavator rod

CN224229238UCN 224229238 UCN224229238 UCN 224229238UCN-224229238-U

Abstract

The utility model discloses a pressure-resistant polyether-ether-ketone sealing ring for an excavator rod, which comprises a sealing ring positioned at the inner side of a cylinder cover, wherein an outer ring which is abutted against the inner wall of a cylinder barrel is arranged on the sealing ring, a first inclined ring for blocking a port of the cylinder cover is arranged at the end part of the outer ring, a second inclined ring is oppositely arranged on the first inclined ring, and a triangular chamber is formed between the first inclined ring and the second inclined ring. According to the pressure-resistant polyether-ether-ketone sealing ring for the excavator rod, dirt is blocked through the end part of the first inclined ring, the infiltrated dirt is guided by the inclined angle of the first inclined ring, one of the inclined angles of the first inclined ring is diffused to the outer ring along the outer side of the first inclined ring and is still blocked by the outer ring, the second inclined ring enters the triangular chamber along the side wall of the shaft and is blocked by the second inclined ring, and finally, a third inclined ring is reserved for bottom covering, so that the third inclined ring can shield all the infiltrated dirt particles together with the outer ring, and the dirt particles are prevented from invading the inside of the cylinder barrel to influence hydraulic operation.

Inventors

  • HE YI

Assignees

  • 南京厚孚机械科技有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (10)

  1. 1. The pressure-resistant polyether-ether-ketone sealing ring for the excavator rod comprises a cylinder barrel (1) provided with a cylinder cover (11), wherein a shaft (10) slides in the cylinder barrel (1), and the pressure-resistant polyether-ether-ketone sealing ring is characterized by further comprising a sealing ring (2) positioned at the inner side of the cylinder cover (11), and an outer ring (21) which is abutted against the inner wall of the cylinder barrel (1) is arranged on the sealing ring (2); The end part of the outer ring (21) is provided with a first inclined ring (22) for blocking a port of the cylinder cover (11), the first inclined ring (22) is oppositely provided with a second inclined ring (23), and a triangular chamber (24) is formed between the first inclined ring (22) and the second inclined ring (23); And a third inclined ring (27) which is arranged opposite to the second inclined ring (23) is further arranged on the outer ring (21), and a framework (3) is arranged in the third inclined ring (27).
  2. 2. The pressure-resistant polyether-ether-ketone sealing ring for an excavator rod according to claim 1, further comprising a hooping ring (4) which is in abutting engagement with the outer side wall of the first diagonal ring (22).
  3. 3. The pressure-resistant polyether-ether-ketone sealing ring for the excavator rod according to claim 1, wherein a retention groove (25) matched with the first inclined ring (22) is formed in the outer ring (21).
  4. 4. The pressure-resistant polyether-ether-ketone sealing ring for an excavator rod according to claim 3, wherein the inner side wall of the cylinder barrel (1) is provided with a ring recess (12) communicated with the retention groove (25).
  5. 5. A pressure-resistant polyetheretherketone sealing ring for an excavator rod according to claim 3, wherein the end of the outer ring (21) is provided with an outer lip (26) which is in interference fit with the inner side wall of the cylinder barrel (1).
  6. 6. The pressure-resistant polyether-ether-ketone sealing ring for an excavator rod according to claim 5, wherein the framework (3) is provided with a flat section (31) matched with the outer lip (26).
  7. 7. The pressure-resistant polyether-ether-ketone sealing ring for the excavator rod according to claim 5, wherein the framework (3) is further provided with an inclined section (32) matched with the third inclined ring (27).
  8. 8. The pressure-resistant polyether-ether-ketone sealing ring for an excavator rod according to claim 7, wherein the end part of the third inclined ring (27) is provided with an adduction ring (28) which is in sliding fit with the end part of the second inclined ring (23).
  9. 9. The pressure-resistant polyetheretherketone sealing ring for an excavator rod according to claim 8, wherein the inclined section (32) is provided with a curved section (33) at the end thereof which cooperates with the adduction ring (28).
  10. 10. The pressure-resistant polyetheretherketone sealing ring for excavator levers according to claim 9, wherein the adduction ring (28) cooperates with the second diagonal ring (23) to form a closed chamber (29).

Description

Withstand voltage polyether ether ketone sealing ring for excavator rod Technical Field The utility model relates to the technical field of hydraulic cylinder sealing parts of excavators, in particular to a pressure-resistant polyether-ether-ketone sealing ring for an excavator rod. Background The excavator arm power is driven by a hydraulic cylinder, a piston rod driven by hydraulic oil is arranged on the hydraulic cylinder, the piston rod is used for pushing power, and the piston rod and a cylinder cover of a cylinder barrel port are assembled in a sliding mode through a sealing ring. According to publication No. CN221401191U, publication No. 2024-07-23, an excavator bucket rod cylinder is disclosed, which comprises a sealing seat positioned at the outer side of a piston rod, and a retainer ring, a bushing, two sealing rings and a framework oil seal are arranged in the inner circular surface of the sealing seat, so as to strengthen the sealing effect and reduce the entry of external sundries. In the prior art including above-mentioned patent, the excavator is located the environment and mostly exists floating dust and mud, and the piston rod is at the surface of the unavoidable can make the filth sputter of during operation, appear big filth and pile up in cylinder cap position department even, and because the piston rod stretches out and removes its surface and usually can adhere to one deck oil film, and make greasy dirt mix when the telescopic link is retracted and erode the sealing ring, lead to sealing ring and the oil blanket of polyether ether ketone material to damage aggravate, less filth granule then infiltrates in the cylinder body of oil blanket inboard along the oil film in serious time, and then cause the influence to hydraulic pressure work, still can reduce each sealing ring and the normal life of oil blanket simultaneously. Disclosure of utility model The utility model aims to provide a pressure-resistant polyether-ether-ketone sealing ring for an excavator rod, which aims to solve the problems. In order to achieve the above object, the present utility model provides the following technical solutions: The pressure-resistant polyether-ether-ketone sealing ring for the excavator rod comprises a cylinder barrel provided with a cylinder cover, wherein a shaft slides in the cylinder barrel, and the pressure-resistant polyether-ether-ketone sealing ring also comprises a sealing ring positioned at the inner side of the cylinder cover, and an outer ring which is abutted against the inner wall of the cylinder barrel is arranged on the sealing ring; The end part of the outer ring is provided with a first inclined ring for plugging a cylinder cover port, the first inclined ring is oppositely provided with a second inclined ring, and a triangular chamber is formed between the first inclined ring and the second inclined ring; And a third inclined ring which is arranged opposite to the second inclined ring is further arranged on the outer ring, and a framework is arranged in the third inclined ring. Preferably, the hoop structure further comprises a hoop which is in interference fit with the outer side wall of the first inclined ring. Preferably, a retention groove matched with the first inclined ring is formed in the outer ring. Preferably, the inner side wall of the cylinder barrel is provided with a ring recess communicated with the retention groove. Preferably, the outer ring end is provided with an outer lip in interference fit with the inner side wall of the cylinder barrel. Preferably, the framework is provided with a flat section matched with the outer lip. Preferably, the framework is further provided with an inclined section matched with the third inclined ring. Preferably, the third inclined ring end part is provided with an adduction ring which is in sliding fit with the second inclined ring end part. Preferably, the end of the inclined section is provided with a bending section matched with the adduction ring. Preferably, the adduction ring cooperates with the second diagonal ring to form a closed chamber. According to the technical scheme, the pressure-resistant polyether-ether-ketone sealing ring for the excavator rod has the advantages that dirt which is permeated inwards of a cylinder cover is blocked through the end part of the first inclined ring, the permeated dirt is guided by the inclined angle of the first inclined ring, the first dirt is diffused along the outer side of the first inclined ring to the outer ring, but still blocked by the outer ring, the second dirt enters the triangular chamber along the side wall of the shaft and is blocked by the second inclined ring, and finally, a third inclined ring is reserved for bottom covering, so that the third inclined ring can shield all permeated dirt particles together with the outer ring, and the dirt particles are prevented from invading the inside of the cylinder barrel to affect hydraulic work. Drawings In order to more clearly