CN217842210U

CN217842210U - Multistage hydraulic cylinder with improved structure

Info

Publication number: CN217842210U
Application number: CN202220493883.4U
Authority: CN
Inventors: 张润; 孔令强; 许金龙
Original assignee: Shandong Yigong Machinery Co ltd
Current assignee: Shandong Yigong Machinery Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-11-18
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to a multistage hydraulic cylinder of institutional advancement, including the hydro-cylinder seat, the inside sliding connection of hydro-cylinder seat has quantity to be two piston rods, be equipped with seal assembly on hydro-cylinder seat and the piston rod, the last mechanism of aerifing that is connected with the hydro-cylinder seat that is equipped with of seal assembly, seal assembly include fixed mounting in hydro-cylinder seat top and bottom the sleeve at piston rod top with set up in the outside sealed packing groove of piston rod, the slot has all been seted up to the left and right sides of telescopic inner chamber, two it has the annular seat to peg graft between the slot, and the inboard of annular seat is pegged graft and is had quantity to be two annular sealing rubber expansion ring. This institutional advancement's multistage hydraulic cylinder is through the mechanism of aerifing that sets up to when having made things convenient for the mechanism of aerifing to carry out gas filled to seal assembly, sealed the outside of piston rod, guaranteed sealed effect when having guaranteed the piston rod removal, the phenomenon of the oil impregnate is avoided appearing.

Description

Multistage hydraulic cylinder with improved structure

Technical Field

The utility model relates to a multistage hydraulic cylinder technical field specifically is a institutional advancement's multistage hydraulic cylinder.

Background

The telescopic hydraulic cylinder is also called multistage hydraulic cylinder, it is formed by two-stage or multistage piston cylinder suit, mainly by the cylinder cap, cylinder, sleeve, piston, etc. parts make up, there are oil inlet, oil-out A and B at both ends of the cylinder, when A port oil inlet, B port oil return, promote the movement of the larger first-stage piston of effective active area first, then promote the movement of the smaller second-stage piston.

The shoveling mechanism and the lifting mechanism of the excavator and the loader in the multi-stage hydraulic oil cylinder are mainly used for engineering machinery, the intelligent adjustment and the stable structure are achieved, but the traditional multi-stage hydraulic oil cylinder is sealed by adopting a sealing oil valve, and the phenomenon of oil leakage does not occur easily due to the fact that the sealing performance is poor due to temperature or friction.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a institutional advancement's multistage hydraulic cylinder possesses the leakproofness advantage such as good, has solved traditional multistage hydraulic cylinder and has all adopted sealed fuel tap to seal, causes the problem of the phenomenon of the good appearance oil impregnate of leakproofness because temperature or friction easily.

In order to achieve the above object, the utility model provides a following technical scheme: a multistage hydraulic oil cylinder with an improved structure comprises an oil cylinder base, wherein two piston rods are connected inside the oil cylinder base in a sliding mode, sealing assemblies are arranged on the oil cylinder base and the piston rods, and an inflating mechanism connected with the oil cylinder base is arranged on each sealing assembly;

the sealing assembly comprises a sleeve fixedly arranged at the top and the bottom of the oil cylinder seat and the top of the piston rod and a sealing filling groove arranged outside the piston rod, the left side and the right side of the inner cavity of the sleeve are respectively provided with an inserting groove, an annular seat is inserted between the two inserting grooves, and the inner side of the annular seat is inserted with two annular sealing rubber expansion rings;

the inflation mechanism comprises a connecting pipe and a miniature air pump, wherein the connecting pipe is communicated between the two annular sealing rubber expansion rings, the miniature air pump is fixedly installed on the front surface of the oil cylinder seat, the top of the miniature air pump is provided with two annular sealing rubber expansion rings, the annular sealing rubber expansion rings are communicated with one another through a hose, the left side of the hose is communicated with an air pipe communicated with an air outlet of the miniature air pump, and the left side of the air pipe is communicated with a control valve.

Further, the annular seat is a torus, the annular sealing rubber expansion ring is hollow torus rubber, and a connecting slot matched with the annular sealing rubber expansion ring in size is formed in the inner side of the annular seat.

Furthermore, the top of the annular sealing rubber expansion ring at the top is communicated with an inserting cylinder, and the annular sealing rubber expansion ring is communicated with the hose through the inserting cylinder.

Further, sealed filling groove is the ring shape, and the quantity of sealed filling groove is no less than thirty, and sealed filling groove is vertical equidistance and distributes.

Furthermore, a magnet which is fixedly adsorbed with the annular seat is embedded into the slot, and the magnet is aligned with the inner wall surface of the sleeve.

Furthermore, the left and right sides of annular seat outer lane is equal fixed mounting has the absorption iron plate, and the absorption iron plate corresponds with the magnet absorption.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this institutional advancement's multistage hydraulic cylinder is through the mechanism of aerifing that sets up to when having made things convenient for the mechanism of aerifing to carry out gas filled to seal assembly, sealed the outside of piston rod, guaranteed sealed effect when having guaranteed the piston rod removal, the phenomenon of the oil impregnate is avoided appearing.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: the device comprises an oil cylinder seat 1, a piston rod 2, a sealing filling groove 3, a sleeve 4, a slot 5, an annular seat 6, a magnet 7, an annular sealing rubber expansion ring 8, a connecting pipe 9, a hose 10, an air pipe 11, a miniature air pump 12 and a control valve 13.

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.

Referring to fig. 1-2, the multistage hydraulic cylinder with an improved structure in the present embodiment includes a cylinder base 1, two piston rods 2 are slidably connected inside the cylinder base 1, a sealing assembly is disposed on the cylinder base 1 and the piston rods 2, and an inflation mechanism connected to the cylinder base 1 is disposed on the sealing assembly.

Please refer to fig. 1-2, in order to improve the sealing performance of the device, the sealing assembly in this embodiment includes a sleeve 4 fixedly installed on the top of the cylinder seat 1 and the top of the bottom piston rod 2 and a sealing filling groove 3 arranged outside the piston rod 2, the sealing filling groove 3 is circular, the number of the sealing filling groove 3 is not less than thirty, the sealing filling groove 3 is distributed at equal vertical distance, slots 5 are respectively arranged on the left and right sides of the inner cavity of the sleeve 4, an annular seat 6 is inserted between the two slots 5, two annular sealing rubber expansion rings 8 are inserted in the inner side of the annular seat 6, the annular seat 6 is a circular ring, the annular sealing rubber expansion rings 8 are hollow circular ring rubber, connecting slots matched with the annular sealing rubber expansion rings 8 in size are arranged in the inner side of the annular seat 6, and the annular sealing rubber expansion rings 8 can be installed and replaced conveniently.

It should be noted that, the slot 5 is embedded with a magnet 7 which is fixedly adsorbed with the annular seat 6, the magnet 7 is flush with the inner wall surface of the sleeve 4, the left and right sides of the outer ring of the annular seat 6 are fixedly provided with an adsorbing iron block, and the adsorbing iron block corresponds to the magnet 7 in an adsorbing manner.

The slot 5 sets up and has made things convenient for fix a position the annular seat 6 and peg graft in the slot 5 and take out, cooperates magnet 7 simultaneously and has made things convenient for when inserting annular seat 6 to counterpoint annular seat 6 installation fixed, has realized installing fast and changing annular sealing rubber expansion ring 8 on the annular seat 6.

Referring to fig. 1-2, in order to improve the filling and sealing effect, the inflation mechanism in this embodiment includes a connection pipe 9 connected between two annular sealing rubber expansion rings 8 and a micro air pump 12 fixedly installed on the front surface of the cylinder base 1, a hose 10 is connected between the two top annular sealing rubber expansion rings 8, a gas pipe 11 connected to an exhaust port of the micro air pump 12 is connected to the left side of the hose 10, a control valve 13 is connected to the left side of the gas pipe 11, an insertion tube is connected to the top of the top annular sealing rubber expansion ring 8, the annular sealing rubber expansion ring 8 is connected to the hose 10 through the insertion tube, and the insertion tube is provided to facilitate the insertion and extraction of the hose 10 for replacing the annular sealing rubber expansion ring 8.

The working principle of the above embodiment is as follows:

through the miniature air pump 12 that sets up, thereby when having made things convenient for miniature air pump 12 work, utilize miniature air pump 12, trachea 11, hose 10, intercommunication each other between annular seal rubber expansion ring 8 and the connecting pipe 9, make miniature air pump 12 work aerify in to annular seal rubber expansion ring 8, and cooperate control valve 13 control switch, guarantee annular seal rubber expansion ring 8 and aerify the inflation, it seals to fill in the sealed filling groove 3 on the piston rod 2, guaranteed that piston rod 2 guarantees sealed effect when removing flexible, the phenomenon of the oil impregnate is avoided appearing.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

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 construction improvement's multistage hydraulic cylinder, includes cylinder block (1), its characterized in that: the oil cylinder seat (1) is internally connected with two piston rods (2) in a sliding manner, the oil cylinder seat (1) and the piston rods (2) are provided with sealing components, and the sealing components are provided with inflating mechanisms connected with the oil cylinder seat (1);

the sealing assembly comprises a sleeve (4) fixedly arranged at the top and the bottom of the oil cylinder seat (1) and the top of the piston rod (2) and a sealing filling groove (3) arranged outside the piston rod (2), the left side and the right side of an inner cavity of the sleeve (4) are respectively provided with a slot (5), an annular seat (6) is inserted between the two slots (5), and the inner side of the annular seat (6) is inserted with two annular sealing rubber expansion rings (8);

the inflation mechanism comprises a connecting pipe (9) communicated between two annular sealing rubber expansion rings (8) and a miniature air pump (12) fixedly installed on the front surface of the oil cylinder seat (1), the top of the inflation mechanism is two, a hose (10) is communicated between the annular sealing rubber expansion rings (8), an air pipe (11) communicated with an air outlet of the miniature air pump (12) is communicated with the left side of the hose (10), and a control valve (13) is communicated with the left side of the air pipe (11).

2. A structurally improved multi-stage hydraulic ram as set forth in claim 1 wherein: the annular seat (6) is a torus, the annular sealing rubber expansion ring (8) is hollow torus rubber, and a connecting slot matched with the annular sealing rubber expansion ring (8) in size is formed in the inner side of the annular seat (6).

3. A structurally improved multi-stage hydraulic ram as set forth in claim 1 wherein: the top of the annular sealing rubber expansion ring (8) is communicated with an inserting cylinder, and the annular sealing rubber expansion ring (8) is communicated with the hose (10) through the inserting cylinder.

4. A hydraulic ram having an improved construction according to claim 1, characterised in that: the sealing filling grooves (3) are circular rings, the number of the sealing filling grooves (3) is not less than thirty, and the sealing filling grooves (3) are distributed at equal intervals in the vertical direction.

5. A hydraulic ram having an improved construction according to claim 1, characterised in that: and a magnet (7) which is fixedly adsorbed with the annular seat (6) is embedded into the slot (5), and the magnet (7) is flush with the inner wall surface of the sleeve (4).

6. A hydraulic ram having an improved construction according to claim 5, characterised in that: the left side and the right side of the outer ring of the annular seat (6) are fixedly provided with adsorption iron blocks, and the adsorption iron blocks correspond to the magnets (7) in an adsorption mode.