CN210034242U - High-precision low-friction leakage-free wind power yaw hydraulic brake cylinder - Google Patents
High-precision low-friction leakage-free wind power yaw hydraulic brake cylinder Download PDFInfo
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- CN210034242U CN210034242U CN201920607570.5U CN201920607570U CN210034242U CN 210034242 U CN210034242 U CN 210034242U CN 201920607570 U CN201920607570 U CN 201920607570U CN 210034242 U CN210034242 U CN 210034242U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model discloses a high accuracy low friction does not have wind-powered electricity generation driftage hydraulic braking jar, including cylinder body, combination dustproof sealing and combination sealing, the inside piston that is provided with of cylinder body, cylinder body with be provided with between the piston combination dustproof sealing, piston right side processing have the protruding portion that is echelonment structure with the piston, the surface and the cylinder body internal surface cooperation installation of piston, the surface and the end cover cooperation installation of protruding portion. The utility model discloses an install the design of combination dustproof seal at cylinder body hole front end, can prevent effectively that outside dust from getting into inside the checking cylinder, still have the direction function, install the design of combination seal on the piston, it is little to have the friction, there is not leakage, long service life's characteristic, through design installation spacing snap ring on the cylinder body, ensure that cylinder chamber fluid does not take place to reveal, the surface and the cylinder body internal surface cooperation installation of piston, the surface and the end cover cooperation installation of protruding portion have two-stage direction function, increase the stability of hydro-cylinder, long service life.
Description
Technical Field
The utility model relates to a wind-powered electricity generation driftage hydraulic braking jar technical field, the utility model relates to a high accuracy low friction does not have wind-powered electricity generation driftage hydraulic braking jar.
Background
The wind power yaw hydraulic brake cylinder is a key element of a yaw brake system of a cabin of the wind generating set. The wind power yaw hydraulic brake cylinder provides brake torque to ensure that a cabin of the wind driven generator is aligned to the incoming wind direction to generate power and is stably positioned in the strong wind environment, the cabin can be safely positioned temporarily in the strong wind exceeding the designed use condition, and the damage of the cabin caused by the out-of-control rotation of the strong wind drive is avoided. When field maintenance personnel need to enter the engine room for maintenance operation, the main shaft is locked by the braking torque provided by the hydraulic brake.
The wind power yaw hydraulic brake cylinder of nearly ten thousand wind power generator sets in China belongs to the use of unilateral pressure stress braking, and after the hydraulic brake cylinder is used for a period of time, the hydraulic brake cylinder has the defects of serious oil leakage, brake failure and short service life, brings serious safety risk to a wind power plant, and directly influences the power generation efficiency. The main reasons are: the design structure that hydraulic brake jar cylinder body and end cover are integrative has the defect, and the cylinder body hole can only car processing or bore hole processing, and hole roughness and tolerance fit all can not reach the requirement, and frequent braking and high and low temperature influence very easily lead to sealed inefficacy, produce the oil leak. The hydraulic brake cylinder has too short piston guide length, brakes in an effective stroke, has no guide or insufficient guide, and is impacted by radial shearing force, so that the cylinder barrel and the piston can be abraded, the sealing ring is unevenly stressed and is eccentrically worn, and sealing failure and oil leakage are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wind-powered electricity generation driftage hydraulic brake jar is not leaked in order to solve above-mentioned problem just to the low friction of high accuracy.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder comprises a cylinder body, a combined dustproof seal and a combined seal, wherein a piston is arranged in the cylinder body, the combined dustproof seal is arranged between the cylinder body and the piston, the combined dustproof seal comprises an O-shaped dustproof sealing ring and an opening sliding ring arranged on one side of the O-shaped dustproof sealing ring, the combined seal is arranged on one side of the combined dustproof seal, the combined seal comprises an O-shaped sealing ring and a strip-shaped sealing ring arranged on one side of the O-shaped sealing ring, a limiting snap ring is arranged on the other side of the combined dustproof seal, an end cover is arranged on the right side of the piston, an end cover connecting bolt is arranged between the end cover and the cylinder body, an oil inlet flange is arranged on one side of the end cover, and an oil, the piston right side processing has the protruding portion that stretches into the inside of end cover, the diameter of protruding portion is less than the piston diameter, and is coaxial with the piston and is the echelonment structure, the surface and the cylinder body internal surface cooperation installation of piston, the surface and the end cover cooperation installation of protruding portion.
Furthermore, the piston is connected with the cylinder body in a sliding manner, and the protruding part is connected with the end cover in a sliding manner.
Furthermore, the cylinder body is of a cylindrical structure with two open ends.
Furthermore, the limiting snap ring is connected with the cylinder body through a clamping groove.
Furthermore, the combined dustproof seal is connected with the cylinder body and the piston in a clamping and pressing mode, and the O-shaped dustproof seal ring is in lap joint with the opening slip ring.
Furthermore, the combined seal is connected with the cylinder body and the piston in a clamping and pressing mode, and the O-shaped seal ring is in lap joint with the strip-shaped seal ring.
Further, the end cover is connected with the cylinder body through the end cover connecting bolt.
Further, the oil inlet flange is connected with the end cover through the oil inlet flange connecting bolt.
Furthermore, the O-shaped dustproof sealing ring, the opening sliding ring, the O-shaped sealing ring and the strip-shaped sealing ring are all made of reinforced fluoroplastics.
Further, the piston and the protruding portion are integrally machined.
The specific working principle is as follows: in use of the hydraulic brake cylinder, the check ring is fitted to an inner front end portion of the cylinder body for limiting a telescopic stroke of the piston. The outer surface of the piston is matched with the inner surface of the cylinder body, the outer surface of the protruding portion is matched with the end cover, the piston and the protruding portion have two-stage guiding functions, two sliding combined seals are placed on the piston to form a sealing cavity with the cylinder body, the combined dustproof seal is arranged at the front end of an inner hole of the cylinder body and used for preventing external dust from entering the hydraulic oil cylinder, the combined dustproof seal is arranged at the front end of the cylinder body and used for preventing the external dust from entering the brake cylinder, the guiding function is further achieved, the combined seal is designed and installed on the piston, the processing manufacturability is good, the processing cost is low, the installation is convenient, and meanwhile, the combined structure has the characteristics of small friction, no leakage and long service life.
The beneficial effects of the utility model reside in that:
the combined dustproof seal is arranged at the front end of the cylinder body, so that external dust can be effectively prevented from entering the brake cylinder, and the guide function is achieved;
the combined seal is designed and arranged on the piston, so that the processing manufacturability is good, the processing cost is low, the installation is convenient, and meanwhile, the combined structure has the characteristics of small friction, no leakage and long service life;
by designing and installing the limiting snap ring on the cylinder body, when four screws for fixing the brake cylinder are broken, the limiting snap ring with small volume and strong anti-shearing capability can safely and reliably intercept the piston in the cylinder body, so that the oil in the cylinder cavity is prevented from leaking;
the two ends of the cylinder body are of an unsealed tubular structure, the cylinder body, the end cover and the oil inlet flange form a section of sealed cylinder body, the piston is designed into a stepped shaft structure, the length of the rear end of the piston is increased to extend into the end cover, the front end of the piston is designed into a limiting snap ring positioning shaft, the diameter of the positioning shaft is consistent with the inner diameter of the limiting snap ring, the positioning shaft and the limiting snap ring are in precise movable fit, the limiting snap ring positioning shaft is inserted into an inner hole of the limiting snap ring, the front end face of the positioning shaft is flush with the front end face of the limiting snap ring, the;
the outer surface of the piston is matched with the inner surface of the cylinder body, and the outer surface of the protruding portion is matched with the end cover, so that the oil cylinder has a two-stage guiding function, and has the characteristics of increased stability and long service life.
Drawings
Fig. 1 is a front view of a high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to the present invention;
FIG. 2 is a partial enlarged view of a combined dustproof sealing part in the high-precision low-friction leakage-free wind power yawing hydraulic brake cylinder.
The reference numerals are explained below:
1. a limit snap ring; 2. a cylinder body; 3. a piston; 4. the combination is dustproof and sealed; 401. an O-shaped dustproof sealing ring; 402. an open slip ring; 5. combining and sealing; 501. an O-shaped sealing ring; 502. a strip-shaped sealing ring; 6. the end cover is connected with a bolt; 7. an end cap; 8. an oil inlet flange connecting bolt; 9. an oil inlet flange.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1-2, a high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder comprises a cylinder body 2, a combined dustproof seal 4 and a combined seal 5, wherein a piston 3 is arranged inside the cylinder body 2, the combined dustproof seal 4 is arranged between the cylinder body 2 and the piston 3, the combined dustproof seal 4 is designed and installed at the front end of an inner hole of the cylinder body 2 to prevent external dust from entering the brake cylinder, and has a guiding function, the combined dustproof seal 4 comprises an O-shaped dustproof seal ring 401 and an opening slip ring 402 arranged on one side of the O-shaped dustproof seal ring 401, the combined seal 5 is arranged on one side of the combined dustproof seal 4, the combined seal 5 is designed and installed on the piston 3, the processing manufacturability is good, the processing cost is low, the installation is convenient, and the combined structure has the characteristics of small friction, no leakage and long service life, combination seal 5 includes O type sealing washer 501 and sets up the bar seal 502 of O type sealing washer 501 one side, 4 opposite sides of combination dustproof seal are provided with spacing snap ring 1, spacing snap ring 1 has small in size, the characteristic that anti-shear capacity is strong, spacing snap ring 1 is installed in the spacing snap ring inslot of cylinder body, spacing snap ring 1 design installation distance cylinder body 2 terminal surface 12mm department, friction disc thickness 10mm among the braking system can set up to the friction disc wearing and tearing and maintain again when remaining 3mm, both guarantee the stroke of friction disc fully working, also guarantee when four screw rods when fixed brake cylinder fracture, with 3 interceptions of piston in cylinder body 2, guarantee that the interior fluid of cylinder body 2 does not take place to reveal. The piston 3 is of a step shaft structure, the rear end of the piston is lengthened and extends into the end cover, the guide length is lengthened, the front end of the piston is designed into a limit snap ring positioning shaft, the diameter of the positioning shaft is consistent with the inner diameter of the limiting snap ring 1, the positioning shaft and the limiting snap ring are in precise movable fit, the positioning shaft of the limiting snap ring is inserted into an inner hole of the limiting snap ring 1, the front end surface of the positioning shaft of the limiting snap ring is flush with the front end surface of the limiting snap ring 1, the length of the positioning shaft of the limiting snap ring is 8mm wider than that of the limiting, thereby limiting the maximum abrasion degree of the friction plate in the braking system, avoiding the direct friction between the steel back of the friction plate and the steel structure brake disc, fully utilizing the original part of the blank groove, having more compact and reasonable structure, an end cover 7 is arranged at the other side of the piston 3, an end cover connecting bolt 6 is arranged between the end cover 7 and the cylinder body 2, an oil inlet flange 9 is arranged on one side of the end cover 7, and an oil inlet flange connecting bolt 8 is arranged between the oil inlet flange 9 and the end cover 7. The right side of the piston 3 is provided with a protruding part extending into the end cover 7, the diameter of the protruding part is smaller than that of the piston 3, the protruding part and the piston 3 are coaxial and are of a stepped structure, the outer surface of the piston 3 and the inner surface of the cylinder body 2 are installed in a matched mode, and the outer surface of the protruding part and the end cover 7 are installed in a matched mode.
In this embodiment, the piston 3 is slidably connected to the cylinder 2, and the protrusion is slidably connected to the end cap 7.
In the present embodiment, the cylinder 2 has a cylindrical structure with both ends open. The cylinder body 2, the end cover 7 and the oil inlet flange 9 form a section of closed sealing cylinder body. The cylinder body 2 has the advantages that the cylinder body is of a cylindrical structure, the Ra0.2 surface roughness standard required by the inner hole of the cylinder body can be achieved by utilizing a mature honing surface machining process, the optimal value required by sliding sealing is ensured, and therefore the sealing reliability and the use durability of the brake cylinder are improved.
In this embodiment, there is spacing snap ring 1 with cylinder body 2 passes through the draw-in groove and connects.
In this embodiment, the combined dustproof seal 4 is connected with the cylinder body 2 and the piston 3 in a clamping and pressing manner, the O-shaped dustproof seal ring 401 is lapped with the opening slip ring 402, and the combined seal 5 is designed and installed on the piston 3, so that the combined structure has the characteristics of small friction, no leakage and long service life, and is good in processing manufacturability, low in processing cost and convenient to install.
In this embodiment, the combined seal 5 and the cylinder body 2 and the piston 3 are connected in a clamping and pressing manner, the O-shaped seal ring 501 is overlapped with the strip-shaped seal ring 502, and the combined dust seal 4 is designed and installed at the front end of the inner hole of the cylinder body 2, so that external dust is prevented from entering the brake cylinder, and the combined dust seal also has a guiding function.
In this embodiment, the end cap 7 is connected to the cylinder block 2 by the end cap connecting bolt 6.
In this embodiment, the oil inlet flange 9 is connected to the end cover 7 through the oil inlet flange connecting bolt 8.
In this embodiment, the O-shaped dustproof sealing ring 401, the opening slip ring 402, the O-shaped sealing ring 501, and the strip-shaped sealing ring 502 are made of reinforced fluoroplastics.
In this embodiment, the piston 3 and the protruding portion are integrally formed.
The specific working principle is as follows: when the hydraulic brake cylinder is used, the limiting snap ring 1 is assembled at the front end part in the cylinder body 2 and used for limiting the expansion stroke of the piston 3, the outer surface of the piston 3 is matched with the inner surface of the cylinder body 2, the outer surface of the protruding part is matched with the end cover 7, and the piston 3 and the protruding part have two-stage guiding functions. The guide length of the piston 3 is increased, the impact of the radial shearing force of braking can be effectively overcome, the eccentric wear and grinding damage of the cylinder body 2 and the piston 3 are prevented, the guide precision of the piston of the brake cylinder is improved, and the sealing reliability and the use durability of the brake cylinder are also improved. The piston 3 is designed into a stepped shaft structure, so that the protruding part extends into the end cover 7, the original empty knife groove part is fully utilized, and the structure is more compact and reasonable. The piston 3 is provided with two sliding combined seals 5, the combined seals and the cylinder body 2 form a sealed cavity, the front end of an inner hole of the cylinder body 2 is provided with the combined dustproof seal 4 which is used for preventing external dust from entering the hydraulic oil cylinder and preventing the external dust from entering the brake cylinder, and the combined seal 5 is designed and installed on the piston 3, has good processing manufacturability, low processing cost and convenient installation, and has the characteristics of small friction, no leakage and long service life due to the combined structure.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a high accuracy low friction does not have wind-powered electricity generation driftage hydraulic brake jar which characterized in that: comprises a cylinder body (2), a combined dustproof seal (4) and a combined seal (5), wherein a piston (3) is arranged inside the cylinder body (2), the combined dustproof seal (4) is arranged between the cylinder body (2) and the piston (3), the combined dustproof seal (4) comprises an O-shaped dustproof sealing ring (401) and an opening sliding ring (402) arranged on one side of the O-shaped dustproof sealing ring (401), the combined seal (5) is arranged on one side of the combined dustproof seal (4), the combined seal (5) comprises an O-shaped sealing ring (501) and a strip-shaped sealing ring (502) arranged on one side of the O-shaped sealing ring (501), a limiting snap ring (1) is arranged on the other side of the combined dustproof seal (4), an end cover (7) is arranged on the right side of the piston (3), and an end cover connecting bolt (6) is arranged between the end cover (7) and the cylinder body (2, an oil inlet flange (9) is arranged on the right side of the end cover (7), an oil inlet flange connecting bolt (8) is arranged between the oil inlet flange (9) and the end cover (7), a protruding portion extending into the end cover (7) is machined on the right side of the piston (3), the diameter of the protruding portion is smaller than that of the piston (3), the protruding portion and the piston (3) are coaxial and are of a stepped structure, the outer surface of the piston (3) is installed in a matched mode with the inner surface of the cylinder body (2), and the outer surface of the protruding portion and the end cover (7) are installed in a matched mode.
2. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the piston (3) is connected with the cylinder body (2) in a sliding manner, and the protruding part is connected with the end cover (7) in a sliding manner.
3. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the cylinder body (2) is of a cylindrical structure with two open ends.
4. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the limiting clamp ring (1) is connected with the cylinder body (2) through a clamping groove.
5. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the combined dustproof seal (4) is connected with the cylinder body (2) and the piston (3) in a clamping and pressing mode, and the O-shaped dustproof seal ring (401) is in lap joint with the opening slip ring (402).
6. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the combined seal (5) is connected with the cylinder body (2) and the piston (3) in a clamping and pressing mode, and the O-shaped seal ring (501) is in lap joint with the strip-shaped seal ring (502).
7. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the end cover (7) is connected with the cylinder body (2) through the end cover connecting bolt (6).
8. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the oil inlet flange (9) is connected with the end cover (7) through the oil inlet flange connecting bolt (8).
9. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the O-shaped dustproof sealing ring (401), the opening sliding ring (402), the O-shaped sealing ring (501) and the strip-shaped sealing ring (502) are all made of reinforced fluoroplastics.
10. The high-precision low-friction leakage-free wind power yaw hydraulic brake cylinder according to claim 1, characterized in that: the piston (3) and the protruding part are integrally processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607570.5U CN210034242U (en) | 2019-04-29 | 2019-04-29 | High-precision low-friction leakage-free wind power yaw hydraulic brake cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607570.5U CN210034242U (en) | 2019-04-29 | 2019-04-29 | High-precision low-friction leakage-free wind power yaw hydraulic brake cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN210034242U true CN210034242U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920607570.5U Active CN210034242U (en) | 2019-04-29 | 2019-04-29 | High-precision low-friction leakage-free wind power yaw hydraulic brake cylinder |
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| CN (1) | CN210034242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043584A (en) * | 2019-04-29 | 2019-07-23 | 北京中金泰达电液科技有限公司 | A kind of high-precision low friction No leakage wind power yawing hydraulic braking cylinder |
-
2019
- 2019-04-29 CN CN201920607570.5U patent/CN210034242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043584A (en) * | 2019-04-29 | 2019-07-23 | 北京中金泰达电液科技有限公司 | A kind of high-precision low friction No leakage wind power yawing hydraulic braking cylinder |
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