CN219220907U - Leak-proof hydraulic cylinder - Google Patents

Abstract

The utility model provides a leakage-proof hydraulic cylinder, which comprises a cylinder barrel, wherein oil ports are arranged on the outer surfaces of two ends of the cylinder barrel, pipe joints are inserted in the oil ports through U-shaped clamps, the pipe joints are fixed at one end of a high-pressure hose, a cylinder cap for pressing the pipe joints is sleeved on the high-pressure hose, a connecting ring is fixedly connected with the outer surface of one end of the cylinder barrel, which is close to the cylinder barrel, the connecting ring is fixedly connected with the cylinder barrel through a plurality of connecting screws, and connecting pieces which are fixedly connected with the cylinder barrel and are in threaded connection with the connecting screws are arranged on the outer sides of the oil ports: and the oil leakage condition at the connection part of the high-pressure hose and the oil port is prevented.

Description

Leak-proof hydraulic cylinder

Technical Field

The utility model relates to a leakage-proof hydraulic cylinder, and belongs to the field of hydraulic cylinders.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When the hydraulic cylinder is used for realizing reciprocating motion, a speed reducing device can be omitted, a transmission gap is avoided, and the motion is stable, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines. The hydraulic cylinder basically comprises a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffer device and an exhaust device, wherein two oil ports for connecting a high-pressure hose are arranged on the cylinder barrel, a pipe joint on the high-pressure hose is inserted into the oil ports through a U-shaped clamp, hydraulic oil is conveniently supplied to the cylinder barrel or discharged from the cylinder barrel, and when the hydraulic oil is supplied to the cylinder barrel, the high-pressure hose swings, so that a sealing ring between the pipe joint and the oil ports is damaged, and oil leakage occurs.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a leakage-proof hydraulic cylinder, so as to solve the problems in the background art, and prevent the oil leakage condition at the connection part of a high-pressure hose and an oil port.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a leak protection hydraulic cylinder, includes the cylinder, the hydraulic fluid port is all installed to the both ends surface of cylinder, install the coupling through U type card in the hydraulic fluid port, the coupling is fixed in high-pressure hose one end, the cover is equipped with the barrel cap that is used for holding the coupling on the high-pressure hose, the one end surface fixedly connected with go-between that the barrel cap is close to the cylinder, the go-between is connected fixedly through a plurality of connecting screws and cylinder, the hydraulic fluid port outside is equipped with the connecting piece with the cylinder connection fixedly with connecting screw threaded connection.

Further, the connecting piece comprises a convex ring, the outer side of the oil port is provided with the convex ring, the convex ring is fixedly connected with the cylinder barrel, and the connecting screw penetrates through the connecting ring and is in threaded connection with the convex ring.

Further, the outer surface of the convex ring is annular and equidistant, a plurality of inserting grooves are formed in the convex ring, inserting parts are inserted in the inserting grooves, a plurality of round holes communicated with the inserting grooves are formed in the surface, facing to the connecting ring, of the convex ring at equal intervals, a threaded blind hole matched with a connecting screw is formed in the surface, facing to the round hole, of the inserting parts, and one end of the connecting screw penetrates through the round hole and is in threaded connection with the threaded blind hole.

Further, one end of the high-pressure hose close to the pipe joint is sleeved with a pressing ring for pressing the pipe joint, one surface of the pressing ring, which is away from the pipe joint, is annular and equidistant, and a plurality of elastic pieces are arranged on the surface of the pressing ring, which is away from the pipe joint, and the other end of each elastic piece is fixedly connected with the closed end of the cylinder cap.

Furthermore, the limiting sleeves are sleeved at the two ends of the elastic piece, and the limiting sleeves at the two ends of the elastic piece are respectively connected and fixed with the pressing ring and the barrel cap.

Further, a strip-shaped opening is formed in the outer surface of the cylinder cap, and a transparent strip is embedded in the strip-shaped opening.

Further, a penetrating hole is formed in the middle of one face, away from the cylinder barrel, of the barrel cap, the high-pressure hose penetrates through the penetrating hole, a sealing sleeve is adhered in the penetrating hole, and the sealing sleeve is wrapped on the high-pressure hose.

The utility model has the beneficial effects that:

1. after the pipe joint on the high-pressure hose is inserted into the oil port by utilizing the U-shaped clamp, the position of the cylinder cap on the high-pressure hose is adjusted, so that the pipe joint and the oil port are covered by the high-pressure hose, then the cylinder cap is limited on the cylinder barrel by utilizing the connecting screw, the position of the high-pressure hose is limited by utilizing the cylinder cap, the condition that the pipe joint and the oil port are connected in the oil supply process is prevented from swinging, the probability of damage of tightness between the pipe joint and the oil port is reduced, the oil leakage prevention effect is achieved, and meanwhile, under the limit of the cylinder cap, the U-shaped clamp is prevented from falling due to vibration, so that the purpose of preventing the high-pressure hose from being separated from the cylinder body to throw the pipe is achieved.

2. When the cylinder cap is installed, the plug-in part with the threaded blind hole is inserted into the plug-in groove on the convex ring, so that the threaded blind hole is aligned with the round hole, then the connecting screw is screwed into the threaded blind hole after passing through the hole and the round hole on the connecting ring, the thickness of the connecting screw part of the cylinder barrel installation is locally increased, and meanwhile, when the threaded blind hole is damaged due to wrong threads, the plug-in part is replaced.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of a leak-proof hydraulic cylinder according to the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic diagram of the assembly of a middle cap, a collar, an oil port and a high pressure hose of the anti-leakage hydraulic cylinder of the present utility model;

FIG. 4 is a schematic diagram illustrating the assembly of a plug and a collar in a leak-proof hydraulic cylinder according to the present utility model;

FIG. 5 is a cross-sectional view of a bulge loop in a leak-proof hydraulic ram of the present utility model;

in the figure: 1-cylinder barrel, 2-high pressure hose, 3-cylinder cap, 4-convex ring, 5-plug part, 6-connecting ring, 7-connecting screw, 8-pipe joint, 9-oil port, 10-holding ring, 11-limit sleeve, 12-elastic piece, 13-threaded blind hole, 14-round hole and 15-plug groove.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1 and 3, the present utility model provides a technical solution: the utility model provides a leak protection hydraulic cylinder, includes cylinder 1, all installs hydraulic fluid port 9 at cylinder 1's both ends surface, then inserts the coupling 8 that is fixed in high-pressure hose 2 one end in hydraulic fluid port 9, then utilizes U type card to restrict coupling 8 in hydraulic fluid port 9, accomplishes the connection of high-pressure hose 2 and cylinder 1.

Referring to fig. 1, fig. 2 and fig. 3, a barrel cap 3 for holding a pipe joint 8 is sleeved on a high-pressure hose 2, a through hole is formed in the middle position of one face, away from a cylinder barrel 1, of the barrel cap 3, after the high-pressure hose 2 penetrates through the through hole, a sealing sleeve stuck in the through hole is wrapped on the high-pressure hose 2, tightness between the barrel cap 3 and the high-pressure hose 2 is improved, a connecting ring 6 is fixedly connected to the outer surface of one end, close to the cylinder barrel 1, of the barrel cap 3, after the pipe joint 8 on the high-pressure hose 2 is inserted in an oil port 9 by utilizing a U-shaped clamp, the position of the barrel cap 3 on the high-pressure hose 2 is adjusted, the pipe joint 8 and the oil port 9 are covered by the high-pressure hose 2, then the connecting ring 6 is installed on the cylinder barrel 1 by utilizing a plurality of connecting screws 7, the position of the high-pressure hose 2 is limited by utilizing the barrel cap 3, the situation that the connecting position of the pipe joint 8 and the oil port 9 swings is prevented, the sealing property between the pipe joint 8 and the oil port 9 is damaged is reduced, an oil leakage preventing effect is played, and meanwhile, the U-shaped clamp is prevented from falling down due to the fact that the U-shaped clamp drops off from the high-pressure hose 2 to be separated from the transparent pipe insert 3, and the transparent pipe is convenient to observe the transparent pipe, and the transparent pipe is not inserted in the inner surface of the pipe, and the transparent pipe is convenient to observe.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the outside of the oil port 9 is provided with a convex ring 4 fixedly connected with the cylinder barrel 1, the outer surface of the convex ring 4 is provided with a plurality of inserting grooves 15 in an annular equidistant manner, an inserting part 5 is inserted into the inserting grooves 15, one surface of the convex ring 4 facing the connecting ring 6 is provided with a plurality of round holes 14 communicated with the inserting grooves 15 in an annular equidistant manner, wherein one surface of the inserting part 5 facing the round holes 14 is provided with a threaded blind hole 13 matched with the connecting screw 7, when the cylinder barrel cap 3 is installed, the inserting part 5 processed with the threaded blind hole 13 is inserted into the inserting groove 15 on the convex ring 4, so that the threaded blind hole 13 is aligned with the round holes 14, then the connecting screw 7 penetrates through the holes on the connecting ring 6 and the round holes 14 and is screwed into the threaded blind hole 13, thereby realizing the local increase of the thickness of the connecting screw 7 part of the cylinder barrel 1, meanwhile, when the threaded blind hole 13 is damaged due to wrong wires, the sealing gasket is installed between the connecting ring 6 and the convex ring 4, and the sealing gasket is improved.

Referring to fig. 3, a pressing ring 10 for pressing the pipe joint 8 is sleeved at one end of the high-pressure hose 2 close to the pipe joint 8, wherein one surface of the pressing ring 10, which faces away from the pipe joint 8, is in an annular shape and is provided with a plurality of elastic members 12 at equal intervals, the other end of each elastic member 12 is fixedly connected with the closed end of the corresponding barrel cap 3, each elastic member 12 can adopt a spring, both ends of each elastic member 12 are sleeved with a limiting sleeve 11, the limiting sleeves 11 at both ends of each elastic member 12 are respectively fixedly connected with the pressing ring 10 and the corresponding barrel cap 3, under the limitation of the limiting sleeves 11, the stability of connection between the elastic members 12 and the pressing ring 10 and the corresponding barrel cap 3 is improved, after the connection between the connecting ring 6 on the corresponding barrel cap 3 and the corresponding convex ring 4 is completed, the elastic members 12 are in a compressed state, and the pressing ring 10 is always pressed on the pipe joint 8 under the resilience of the elastic members 12, so that the effect of pressing the pipe joint 8 is achieved.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The utility model provides a leak protection hydraulic cylinder, includes cylinder (1), its characterized in that: the hydraulic fluid port (9) are all installed to the both ends surface of cylinder (1), install coupling (8) through U type card in hydraulic fluid port (9), coupling (8) are fixed in high-pressure hose (2) one end, the cover is equipped with on high-pressure hose (2) and is used for holding barrel cap (3) of coupling (8), barrel cap (3) are close to one end surface fixedly connected with go-between (6) of cylinder (1), go-between (6) are connected fixedly with cylinder (1) through a plurality of connecting screws (7), the hydraulic fluid port (9) outside be equipped with connecting screw (7) threaded connection's that are connected fixedly with cylinder (1).

2. The leak-proof hydraulic ram of claim 1, wherein: the connecting piece comprises a convex ring (4), the convex ring (4) is arranged on the outer side of the oil port (9), the convex ring (4) is fixedly connected with the cylinder barrel (1), and the connecting screw (7) penetrates through the connecting ring (6) and is in threaded connection with the convex ring (4).

3. A leak-proof hydraulic ram as defined in claim 2, wherein: the utility model discloses a male connection part, including bulge loop (4), connecting screw (7), a plurality of grafting grooves (15) have been seted up to bulge loop (4) outward appearance annular equidistance, peg graft portion (5) have been installed in grafting groove (15), bulge loop (4) are annular equidistance towards the one side of connecting ring (6) and have seted up a plurality of communicating round holes (14) with grafting groove (15), peg graft portion (5) face one side of round hole (14) set up with connecting screw (7) matched with screw blind hole (13), connecting screw (7) one end runs through round hole (14) and threaded connection in screw blind hole (13).

4. The leak-proof hydraulic ram of claim 1, wherein: one end of the high-pressure hose (2) close to the pipe joint (8) is sleeved with a pressing ring (10) for pressing the pipe joint (8), one surface of the pressing ring (10) deviating from the pipe joint (8) is annular and equidistant, a plurality of elastic pieces (12) are arranged on the surface, and the other end of each elastic piece (12) is fixedly connected with the closed end of the cylinder cap (3).

5. The leak-proof hydraulic ram of claim 4 wherein: the two ends of the elastic piece (12) are respectively sleeved with a limiting sleeve (11), and the limiting sleeves (11) at the two ends of the elastic piece (12) are respectively connected and fixed with the pressing ring (10) and the barrel cap (3).

6. The leak-proof hydraulic ram of claim 1, wherein: the outer surface of the barrel cap (3) is provided with a strip-shaped opening, and a transparent strip is embedded in the strip-shaped opening.

7. The leak-proof hydraulic ram of claim 1, wherein: the cylinder cap (3) is provided with a penetrating hole at the middle part of one surface deviating from the cylinder barrel (1), the high-pressure hose (2) penetrates through the penetrating hole, a sealing sleeve is stuck in the penetrating hole, and the sealing sleeve is wrapped on the high-pressure hose (2).

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