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CN-224229003-U - Self-locking mechanism of rear cover of hydraulic cylinder

CN224229003UCN 224229003 UCN224229003 UCN 224229003UCN-224229003-U

Abstract

The utility model discloses a self-locking mechanism of a rear cover of a hydraulic cylinder, which belongs to the field of hydraulic cylinders and comprises the rear cover of the hydraulic cylinder and a cylinder barrel connected with the top surface of the rear cover, wherein the top surface of the rear cover is provided with a clamping groove for fixing the cylinder barrel, the inner wall of the clamping groove is provided with a sealing gasket penetrating through the inner wall of the clamping groove and the inner wall of the cylinder barrel, and one side of the rear cover is provided with an oil receiving port. Compared with the prior art, the self-locking cylinder has the advantages that when hydraulic oil is injected, the hydraulic oil enters the L-shaped self-locking oil outlet from the central cavity of the rear cover, and enters the space between the stress balance groove and the polytetrafluoroethylene gasket from the L-shaped self-locking oil outlet, and the polytetrafluoroethylene gasket can squeeze the cylinder barrel while deforming along with continuous injection of hydraulic oil, so that mutual clamping connection of the inverted L-shaped clamping block on the outer wall of the clamping groove and the L-shaped fixing groove on the outer wall of the cylinder barrel is completed, and self locking is completed.

Inventors

  • ZHANG PING
  • LU YUFENG
  • LU XIN
  • REN SHAOCHENG
  • MEI GUIHUA
  • ZHANG ZONG

Assignees

  • 十堰天巽汽车零部件股份有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (6)

  1. 1. The utility model provides a self-locking mechanism of lid behind hydraulic cylinder, lid (1) and cylinder (2) be connected with back lid (1) top surface behind hydraulic cylinder behind, the top surface of back lid (1) is equipped with draw-in groove (11) of fixed cylinder (2), and is equipped with on the inner wall of draw-in groove (11) and passes sealing washer (3) of draw-in groove (11) inner wall and cylinder (2) inner wall, one side of back lid (1) is equipped with connects hydraulic fluid port (12), its characterized in that: The novel back cover is characterized in that a plurality of L-shaped self-locking oil outlets (4) penetrating through the inner wall of the clamping groove are formed in the hollow cavity of the back cover (1), stress balance grooves (41) are formed in the bottom surface of the clamping groove (11), polytetrafluoroethylene gaskets (5) clamped in the clamping groove (11) are arranged above the stress balance grooves (41), a plurality of inverted L-shaped clamping blocks (6) located above the polytetrafluoroethylene gaskets (5) are arranged at the outer wall end of the clamping groove (11), and L-shaped fixing grooves (61) clamped with the inverted L-shaped clamping blocks (6) in a mutually rotating mode are formed in the top surface of the cylinder barrel (2).
  2. 2. The self-locking mechanism of the rear cover of the hydraulic cylinder as claimed in claim 1, wherein the oil receiving port (12) of the rear cover (1) is internally provided with a hydraulic oil conversion port (121) connected through threads.
  3. 3. The self-locking mechanism of the rear cover of the hydraulic cylinder as claimed in claim 1, wherein the top surface of the rear cover (1) is provided with a plurality of screw through holes (13) penetrating through the screw.
  4. 4. The self-locking mechanism of a rear cover of a hydraulic cylinder according to claim 1, wherein the bottom surface of the rear cover (1) is provided with a pin hole (14) for connecting load equipment.
  5. 5. The self-locking mechanism of the rear cover of the hydraulic cylinder as set forth in claim 1, wherein the depth of the stress balance groove (41) is larger than the maximum deformation length of the polytetrafluoroethylene gasket (5), and the stress balance groove (41) penetrates through the vertical end opening of the L-shaped self-locking oil outlet (4).
  6. 6. The self-locking mechanism of the rear cover of the hydraulic cylinder as claimed in claim 1, wherein the sealing gasket (3) is positioned above the inverted L-shaped clamping block (6), and TPU coating layers are coated on the outer wall of the inverted L-shaped clamping block (6) and the cavity of the L-shaped fixing groove (61).

Description

Self-locking mechanism of rear cover of hydraulic cylinder Technical Field The utility model relates to the field of hydraulic cylinders, in particular to a self-locking mechanism of a rear cover of a hydraulic cylinder. Background The hydraulic cylinder is used as a common lifting machine and is commonly used in lifting accessories of various trucks and forklift trucks, and among various types of hydraulic cylinders, the front earring pull rod hydraulic cylinder is widely applied to the fields of machine tools and various agricultural equipment due to the advantages of compact structure, light weight, easiness in maintenance and the like. The existing front earring pull rod hydraulic cylinder structure comprises a telescopic rod, a cylinder barrel, a front cover and a rear cover, wherein the sealing of the cylinder barrel is completed by controlling the front cover and the rear cover through a screw rod, locking nuts are arranged on two sides of the screw rod, a sealing gasket is usually arranged between clamping grooves of the cylinder barrel and the rear cover in order to prevent leakage of the cylinder barrel, and an oil receiving port is generally designed on the front cover and the rear cover in order to ensure the sealing effect and the integrity of the cylinder barrel. The front cover and the rear cover are connected through the screw rod in a splicing mode, although the cylinder barrel can be sealed, as long as the front cover and the rear cover are used, the front cover and the rear cover are sealed with the cylinder barrel due to continuous extrusion of hydraulic oil, and gaps can be formed in the sealing effect, so that nuts on two sides of the screw rod are required to be locked periodically. Disclosure of utility model The utility model aims to solve the technical problem that the self-locking mechanism of the rear cover of the existing hydraulic cylinder depends on screws penetrating through the front cover and the rear cover, the sealing of a cylinder barrel is finished by adjusting nuts on two sides of the screws, and once the nuts are disassembled, the leakage condition can occur. The technical scheme includes that the self-locking mechanism of the rear cover of the hydraulic cylinder comprises the rear cover of the hydraulic cylinder and a cylinder barrel connected with the top surface of the rear cover, wherein a clamping groove for fixing the cylinder barrel is formed in the top surface of the rear cover, a sealing gasket penetrating through the inner wall of the clamping groove and the inner wall of the cylinder barrel is arranged on the inner wall of the clamping groove, and an oil receiving port is formed in one side of the rear cover; The hollow cavity of back lid is inside to be equipped with the L shape auto-lock oil-out that a plurality of passed the draw-in groove inner wall, and the bottom surface of draw-in groove is equipped with the atress balancing groove, the top of atress balancing groove is equipped with the polytetrafluoroethylene gasket of a plurality of card in the draw-in groove, the outer wall end of draw-in groove is equipped with a plurality of reverse L shape fixture block that is located polytetrafluoroethylene gasket top, and is equipped with the L shape fixed slot with the mutual rotatory block of reverse L shape fixture block on the top surface of cylinder. As an improvement, a hydraulic oil conversion port connected through threads is arranged in the oil receiving port of the rear cover. As an improvement, the top surface of the rear cover is provided with a plurality of screw through holes penetrating through the screw. As an improvement, the bottom surface of the rear cover is provided with a pin hole for connecting load equipment. As improvement, the depth of the stress balance groove is larger than the maximum deformation length of the polytetrafluoroethylene gasket, and the stress balance groove penetrates through the vertical end opening of the L-shaped self-locking oil outlet. As an improvement, the sealing gasket is positioned above the inverted L-shaped clamping block, and TPU coating is coated on the outer wall of the inverted L-shaped clamping block and the cavity of the L-shaped fixing groove. Compared with the prior art, the self-locking cylinder has the advantages that when hydraulic oil is injected, the hydraulic oil enters the L-shaped self-locking oil outlet from the central cavity of the rear cover, and enters the space between the stress balance groove and the polytetrafluoroethylene gasket from the L-shaped self-locking oil outlet, and the polytetrafluoroethylene gasket can squeeze the cylinder barrel while deforming along with continuous injection of hydraulic oil, so that mutual clamping connection of the inverted L-shaped clamping block on the outer wall of the clamping groove and the L-shaped fixing groove on the outer wall of the cylinder barrel is completed, and self locking is completed. Drawings Fig. 1 is a general structural diag