CN214367000U

CN214367000U - Anti-leakage hydraulic oil cylinder

Info

Publication number: CN214367000U
Application number: CN202122140974.8U
Authority: CN
Inventors: 任广兴; 任翊豪; 张东强; 刘华东; 卞天骄
Original assignee: Laizhou Xingda Hydraulic Machinery Technology Co ltd
Current assignee: Laizhou Xingda Hydraulic Machinery Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-10-08
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a leakage-proof hydraulic oil cylinder, which comprises a first push block, a push rod, an oil discharge assembly, a sealing assembly, a connecting assembly and a cylinder body, wherein the first push block is connected with the cylinder body in a sliding way, the push rod is fixedly connected with one side of the first push block, the surface of the push rod, which is close to one side of the first push block, is connected with a dust-proof pad in a sliding way, the sealing assembly for increasing the sealing property is arranged below the dust-proof pad, the oil discharge assembly is fixedly connected with the inner side of the sealing assembly, the connecting assembly is fixedly connected with one side of the cylinder body, the bottom end of the push rod is fixedly connected with a second push block, a thread is arranged on a second connecting pipe orifice fixedly connected with the bottom end of an oil pipe, so that the second connecting pipe orifice can be connected above the first connecting pipe orifice in a threaded way, the connection is convenient to be disassembled, the arranged dust-proof pipe is connected with the outer side of the oil pipe in a sliding way, when the thread of the oil pipe and the first connecting pipe orifice are connected, the dust-proof pipe slides downwards, thereby with the sealed below of filling up of rubber dog card in the mount pad to avoid the oil leak, and play dustproof effect.

Description

Anti-leakage hydraulic oil cylinder

Technical Field

The utility model relates to a prevent leaking hydraulic cylinder, it belongs to hydraulic cylinder technical field.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. Buffer and exhaust apparatus are decided according to specific application occasion, and other devices are then indispensable, and current pneumatic cylinder adopts threaded connection usually, and the leakproofness has the problem, reveals easily, in order to solve this problem, we have proposed and have prevented leaking hydraulic cylinder.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a leakage-proof hydraulic oil cylinder, through setting up the kicking block, the kicking block matches with the flexible piece in the spacing groove, the lower extreme of flexible piece has fixedly connected the spring holder, when the kicking block promotes, the spring holder is promoted thereby drive the roof to move forward, thereby impel the oil in the oil seepage chamber into the oil pocket of both sides, avoid the oil to ooze out and influence work, and avoid the oil to glue and adsorb dust on the device, set up sealed spacing ring at the push rod and cylinder body junction simultaneously, the inboard of sealed spacing ring tightens up inwards, prevent oil seepage, and at the upper end use fixing bolt fixed connection rubber pad, the multilayer is sealed, through sliding connection dustproof pipe in the outside of oil pipe, at the fixed connection second connecting pipe mouth of oil pipe bottom, thereby the second connecting pipe mouth can with set up the threaded connection mouth in first connecting pipe intraoral, thereby facilitate the installation and the dismantlement of oil pipe, and the dustproof pipe that sets up can slide downwards after the pipeline intercommunication is good, with the sealed lower extreme of filling up of rubber dog card in the mount pad to avoid revealing and advance the ash.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent leaking hydraulic cylinder, includes first ejector pad, push rod, oil extraction subassembly, seal assembly, coupling assembling, cylinder body, first ejector pad and cylinder body sliding connection, first ejector pad one side fixed connection push rod, the push rod is close to first ejector pad one side surface sliding connection and is had dustproof the pad, dustproof the pad below is provided with the seal assembly who is used for increasing the leakproofness, the inboard fixedly connected with oil extraction subassembly of seal assembly, cylinder body one side fixedly connected with coupling assembling, push rod bottom fixedly connected with second ejector pad, second ejector pad sliding connection is inboard at the cylinder body.

Preferably, the oil extraction subassembly includes kicking block, roof, spring holder, oil pocket oozes, kicking block fixed connection terminal surface under first ejector pad, the oil pocket sliding connection that oozes that is provided with in roof and the seal assembly, a roof lateral wall fixed connection spring holder, spring holder upper end fixed connection seal assembly, it is provided with the dog that cuts off the cylinder body inside and ooze the oil pocket to ooze oil pocket below, it is provided with the oil outlet and communicates the oil pocket that is located the cylinder body both sides to ooze oil pocket both sides to lie in seal assembly lower extreme both sides, just oil outlet department is provided with the check valve.

Preferably, the seal assembly comprises a fixing bolt, a telescopic block and a seal limiting ring, the fixing bolt is fixedly connected to the upper end face of the seal limiting ring, a limiting groove is formed in one side of the fixing bolt, the limiting groove is fixed to the upper end face of the seal limiting ring, the telescopic block is slidably connected to the inner side of the seal limiting ring, a top plate is fixedly connected to the bottom end of the telescopic block, and the telescopic block is slidably connected with the inner portion of the spring seat.

Preferably, the connecting assembly comprises a first connecting pipe orifice, a mounting seat, a sealing gasket, an oil pipe, a dustproof pipe, a sliding sleeve, a rubber stop block, a thread and a second connecting pipe orifice, one side wall of the cylinder body is fixedly connected with a mounting seat, the inner side of the mounting seat is provided with a first connecting pipe orifice, a threaded connector is arranged on the inner side edge of the first connecting pipe opening, a sealing gasket is arranged above the threaded connector, the upper end surface of the sealing gasket is fixedly connected with the lower end surface of the inner side of the mounting seat, the lower end surface of the sealing gasket is tightly propped against a rubber stop block, the rubber stopper is fixedly connected with the lower end of the dustproof pipe, the dustproof pipe is connected with the outer side of the oil pipe in a sliding way, the top end of the dustproof pipe is fixedly connected with a sliding sleeve, the sliding sleeve is connected to the outer side of the oil pipe in a sliding manner, the bottom end of the oil pipe is fixedly connected with a second connecting pipe orifice, and the second connecting pipe orifice is provided with threads, and the second connecting pipe orifice is in threaded connection with the threaded connection port.

Preferably, the inner side of the sealed limit ring is set to be in a curved arc shape which is folded inwards, a notch is formed in the upper end of the sealed limit ring, a rubber baffle is arranged in the notch, and a fixing bolt is fixedly connected to the rubber baffle.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a set up the oil extraction subassembly, the oil extraction subassembly includes the kicking block, and when the kicking block pushed up flexible piece, the spring holder of lower extreme drove the roof and promotes forward under the effect of pressure to in the oil pocket that the inboard oil of oil pocket impeld both ends will ooze, avoid oil to ooze out and lead to polluting and avoid influencing device work efficiency simultaneously.

Two, the utility model discloses a set up seal assembly, sealed spacing collar sets up in the push rod outside, and inboard edge is inwards received, avoids oil to ooze, increases the leakproofness of device simultaneously, through setting up fixing bolt with rubber pad and sealed spacing collar fixed connection together, increases the leakproofness of device, has set up dustproof pad on sealed spacing collar, avoids the dust to get into and influences operating mass with sealed spacing collar.

Three, the utility model discloses a set up oil pipe, and sliding connection has the dustproof pipe on oil pipe, set up the screw thread on oil pipe bottom fixed connection's second connecting pipe mouth, thereby second connecting pipe mouth can threaded connection in first connecting pipe mouth top, thereby the connection is dismantled to the convenience, and then to the interior oil transportation of hydro-cylinder, and the dustproof pipe sliding connection who sets up is in the oil pipe outside, when oil pipe and first connecting pipe mouth threaded connection are good, with the dustproof pipe lapse, thereby with the sealed pad below of rubber dog card in the mount pad, thereby avoid the oil leak.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the oil discharge assembly of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

FIG. 4 is a schematic view of the structure of the dustproof connecting oil pipe of the present invention;

fig. 5 is an enlarged view of the point B in fig. 1 according to the present invention.

In the figure: 1. a first push block; 21. a top block; 22. a top plate; 23. a spring seat; 24. an oil seepage cavity; 25. an oil chamber; 3. a seal assembly; 31. fixing the bolt; 32. a telescopic block; 33. sealing the limit ring; 4. a dust-proof pad; 5. a push rod; 6. a first connecting pipe orifice; 61. a mounting seat; 62. a gasket; 7. an oil pipe; 71. a dust-proof pipe; 711. a sliding sleeve; 712. a rubber stopper; 72. a thread; 73. a second connecting pipe orifice; 8. a second push block; 9. a cylinder body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 to 5: the utility model provides a prevent leaking hydraulic cylinder, includes first ejector pad 1, push rod 5, oil extraction subassembly, seal assembly 3, coupling assembling, cylinder body 9, first ejector pad 1 and cylinder body 9 sliding connection, 1 one side fixed connection push rod 5 of first ejector pad, push rod 5 is close to 1 side surface sliding connection of first ejector pad and is equipped with dustproof pad 4, dustproof pad 4 below is provided with seal assembly 3 that is used for increasing the leakproofness, 3 inboard fixedly connected with oil extraction subassemblies of seal assembly, 9 one side fixedly connected with coupling assembling of cylinder body, 5 bottom fixedly connected with second ejector pads 8 of push rod, 8 sliding connection of second ejector pad are inboard at cylinder body 9.

In order to avoid oil pollution, the oil discharge assembly comprises a top block 21, a top plate 22, a spring seat 23, an oil seepage cavity 24 and an oil cavity 25, the top block 21 is fixedly connected to the lower end face of the first push block 1, the top plate 22 is slidably connected with the oil seepage cavity 24 arranged in the sealing assembly 3, the spring seat 23 is fixedly connected to one side wall of the top plate 22, the sealing assembly 3 is fixedly connected to the upper end of the spring seat 23, a stop block for cutting off the inside of the cylinder body 9 and the oil seepage cavity 24 is arranged below the oil seepage cavity 24, the two sides of the oil seepage cavity 24 are arranged on the two sides of the lower end of the sealing assembly 3 and communicated to the oil cavities 25 on the two sides of the cylinder body 9, a check valve is arranged at the oil outlet, when the first push block 1 is repeatedly pushed, the top block 21 pushes the telescopic block 32 downwards, so that the top plate 22 fixedly connected with the lower end of the telescopic block 32 pushes oil seepage cavity 24 to the oil cavities 25 on the two sides, avoid the oil stain to seep out and cause pollution.

In order to increase the sealing performance during operation, the sealing assembly 3 comprises a fixing bolt 31, a telescopic block 32 and a sealing spacing ring 33, the fixing bolt 31 is fixedly connected with the upper end surface of the sealing spacing ring 33, one side of the fixing bolt 31 is provided with a spacing groove, the limit groove is fixed on the upper end surface of the sealed limit ring 33, the telescopic block 32 at the inner side of the limit groove is connected with the inner side of the sealed limit ring 33 in a sliding way, the bottom end of the telescopic block 32 is fixedly connected with the top plate 22, the telescopic block 32 is connected with the interior of the spring seat 23 in a sliding way, the inner side of the sealing limit ring 33 is arranged to be a curved arc shape which is folded inwards, the upper end of the sealing limit ring 33 is provided with a notch, a rubber baffle is arranged in the notch, a fixing bolt 31 is fixedly connected on the rubber baffle, through setting up sealed spacing collar 33 and inboard radian for adduction, effectual multilayer is sealed, increases sealed effect.

In order to avoid convenient connection and prevent leakage when refueling the interior, oil is filled in the oil cylinder, the connection assembly comprises a first connecting pipe orifice 6, a mounting seat 61, a sealing gasket 62, an oil pipe 7, a dustproof pipe 71, a sliding sleeve 711, a rubber stopper 712, a thread 72 and a second connecting pipe orifice 73, a side wall of the cylinder body 9 is fixedly connected with the mounting seat 61, the inner side of the mounting seat 61 is provided with the first connecting pipe orifice 6, the inner side of the first connecting pipe orifice 6 is provided with a threaded connector, the sealing gasket 62 is arranged above the threaded connector, the upper end surface of the sealing gasket 62 is fixedly connected with the lower end surface of the inner side of the mounting seat 61, the lower end surface of the sealing gasket 62 is tightly abutted with the rubber stopper 712, the rubber stopper 712 is fixedly connected with the lower end of the dustproof pipe 71, the dustproof pipe 71 is slidably connected with the outer side of the oil pipe 7, the top end of the dustproof pipe 71 is fixedly connected with the sliding sleeve 711, the sliding sleeve 711 is slidably connected with the outer side of the oil pipe 7, oil pipe 7 bottom fixedly connected with second connecting pipe mouth 73, be provided with screw thread 72 on the second connecting pipe mouth 73, second connecting pipe mouth 73 threaded connection is in threaded connection mouth department, through set up screw thread 72 on oil pipe 7 bottom fixedly connected's second connecting pipe mouth 73, thereby second connecting pipe mouth 73 can with first connecting pipe mouth 6 threaded connection, thereby the connection is dismantled to the convenience, thereby to the oil delivery in the hydro-cylinder, sliding connection is in the dust tube 71 in the cylinder body 9 outside, when promoting downwards, with rubber dog 712 card below the sealed pad 62 in mount pad 61, thereby avoid the oil leak.

The working principle is as follows: during the use, with the second connecting pipe mouth 73 threaded connection of oil pipe 7 lower extreme in the inboard threaded connection mouth of mount pad 61, promote dustproof pipe 71 downwards again, up to rubber stopper 712 supports sealed 62 lower terminal surface in mount pad 61, thereby leak appears in the oil when avoiding refueling, when push rod 5 promotes forward, oil permeates oil seepage chamber 24, promote first ejector pad 1, ejector pad 21 of first ejector pad 1 lower extreme pushes up flexible piece 32, the spring holder 23 of flexible piece 32 lower extreme is promoted, thereby it is forward to drive roof 22, oil is pushed in the oil pocket 25, spring holder 23 drives flexible piece 32 and resets.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent leaking hydraulic cylinder, includes first ejector pad (1), push rod (5), oil extraction subassembly, seal assembly (3), coupling assembling, cylinder body (9), its characterized in that: first ejector pad (1) and cylinder body (9) sliding connection, first ejector pad (1) one side fixed connection push rod (5), push rod (5) are close to first ejector pad (1) one side surface sliding connection and have dustproof pad (4), dustproof pad (4) below is provided with seal assembly (3) that are used for increasing the leakproofness, the inboard fixedly connected with of seal assembly (3) arranges oil assembly, cylinder body (9) one side fixedly connected with coupling assembling, push rod (5) bottom fixedly connected with second ejector pad (8), second ejector pad (8) sliding connection is inboard in cylinder body (9).

2. A leak-proof hydraulic ram according to claim 1, wherein: the oil extraction subassembly includes kicking block (21), roof (22), spring holder (23), oil seepage chamber (24), oil pocket (25), terminal surface under kicking block (21) fixed connection first ejector pad (1), oil seepage chamber (24) sliding connection that sets up in roof (22) and seal assembly (3), roof (22) a lateral wall fixed connection spring holder (23), spring holder (23) upper end fixed connection seal assembly (3), oil seepage chamber (24) below is provided with the dog that cuts off cylinder body (9) inside and oil seepage chamber (24), oil seepage chamber (24) both sides are located seal assembly (3) lower extreme both sides and are provided with the oil outlet and communicate oil pocket (25) that are located cylinder body (9) both sides, just oil outlet department is provided with the check valve.

3. A leak-proof hydraulic ram according to claim 2, wherein: seal assembly (3) include fixing bolt (31), flexible piece (32), sealed spacing collar (33), fixing bolt (31) fixed connection is at sealed spacing collar (33) up end, fixing bolt (31) one side is provided with the spacing groove, the spacing groove is fixed in sealed spacing collar (33) up end, flexible piece (32) sliding connection of spacing inslot side is inboard at sealed spacing collar (33), flexible piece (32) bottom fixedly connected with roof (22), flexible piece (32) and spring holder (23) inside sliding connection.

4. A leak-proof hydraulic ram according to claim 1, wherein: the connecting assembly comprises a first connecting pipe orifice (6), a mounting seat (61), a sealing gasket (62), an oil pipe (7), a dustproof pipe (71), a sliding sleeve (711), a rubber stopper (712), a thread (72) and a second connecting pipe orifice (73), wherein one side wall of the cylinder body (9) is fixedly connected with the mounting seat (61), the inner side of the mounting seat (61) is provided with the first connecting pipe orifice (6), the inner side edge of the first connecting pipe orifice (6) is provided with a threaded connecting port, the sealing gasket (62) is arranged above the threaded connecting port, the upper end face of the sealing gasket (62) is fixedly connected with the inner lower end face of the mounting seat (61), the lower end face of the sealing gasket (62) is tightly abutted against the rubber stopper (712), the rubber stopper (712) is fixedly connected with the lower end of the dustproof pipe (71), and the dustproof pipe (71) is slidably connected with the outer side of the oil pipe (7), dustproof pipe (71) top fixedly connected with sliding sleeve (711), sliding sleeve (711) sliding connection is in oil pipe (7) outside, oil pipe (7) bottom fixedly connected with second connection mouth of pipe (73), be provided with screw thread (72) on second connection mouth of pipe (73), second connection mouth of pipe (73) threaded connection is in threaded connection mouth department.

5. A leak-proof hydraulic ram according to claim 3, wherein: the inner side of the sealed limit ring (33) is set to be in a bending arc shape which is retracted inwards, a notch is formed in the upper end of the sealed limit ring (33), a rubber baffle is arranged in the notch, and a fixing bolt (31) is fixedly connected onto the rubber baffle.