CN216241581U - Bulldozing oil cylinder with anti-loosening and oil-seepage-preventing mechanism for excavator - Google Patents

Abstract

The utility model discloses a bulldozer cylinder for excavators, which belongs to the technical field of cylinders and comprises a cylinder barrel and connectors, wherein the connectors are positioned at the upper side and the lower side of the right side wall of the cylinder barrel, the upper side and the lower side of the right side wall of the cylinder barrel are respectively inserted with an oil outlet pipe and an oil inlet pipe, the top of the cylinder barrel is fixedly connected with a cylinder cover, and a piston rod is connected inside the cylinder cover in a sliding manner. Greatly reducing the probability of abrasion on the surface of the steel pipe, thereby avoiding the phenomenon of looseness.

Description

Bulldozing oil cylinder with anti-loosening and oil-seepage-preventing mechanism for excavator

Technical Field

The utility model relates to the technical field of oil cylinders, in particular to a bulldozing oil cylinder with an anti-loosening and oil-seepage-preventing mechanism for an excavator.

Background

The cylinder is generally a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion, and has no transmission gap and smooth motion, so that the cylinder is widely applied to hydraulic systems of various machines, wherein an excavator is one of main devices for driving the cylinder.

However, because the connection and sealing manner between the external oil pipe and the oil inlet pipe and the oil outlet pipe of the oil cylinder is basically sealed by using the sealing rings, during the pressurizing and pressure discharging processes of the oil cylinder, because the oil body continuously impacts the sealing ring due to the pressure difference, the phenomenon of oil leakage at the joint of the oil pipe is easily caused, on the other hand, because the connecting seats on the upper side and the lower side of the oil cylinder and the connecting end of the excavator are usually connected in a matching way by adopting a flange and a pin shaft, if the product runs for a long time with high strength, the sliding effect on the surface of the connecting end is not enough directly, the abrasion phenomenon at the connecting part is easy to occur, thereby enlarging the gap between the connecting seat and the connecting end of the excavator, further, the loosening phenomenon and even the falling risk are caused, the use safety and the use reliability of the product are reduced, and therefore the bulldozing oil cylinder with the anti-loosening and oil-seepage-preventing mechanism for the excavator is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bulldozer cylinder with an anti-loosening and oil-seepage-preventing mechanism for an excavator, which aims to solve the problems that in the background art, oil bodies continuously impact a sealing ring due to pressure difference, so that oil seepage is easily caused at the joint of an oil pipe, and on the other hand, the joint is easily abraded, so that a gap between a connecting seat and the connecting end of the excavator is enlarged, and further, the looseness is caused.

In order to achieve the purpose, the utility model provides the following technical scheme: a bulldozing oil cylinder with a locking and oil seepage preventing mechanism for an excavator comprises a cylinder barrel and a connector, wherein the connector is positioned on the upper side and the lower side of the right side wall of the cylinder barrel, an oil outlet pipe and an oil inlet pipe are respectively inserted into the upper side and the lower side of the right side wall of the cylinder barrel, a cylinder cover is fixedly connected to the top of the cylinder barrel, a piston rod is connected to the inside of the cylinder cover in a sliding manner, the bottom of the piston rod penetrates through and extends to the bottom of an inner cavity of the cylinder barrel, the bottom of the piston rod is positioned in the inner cavity of the cylinder barrel and is fixedly connected with a piston body, the bottom of the cylinder barrel and the top of the piston rod are fixedly connected with a connecting seat, a positioning ring is rotatably connected to the inside of the connecting seat, clamping grooves are formed in the upper side and the lower side of the inner side wall of the positioning ring, a ball is rotatably connected between the connecting seat and the positioning ring, and an installation pipe is integrally formed on the right side wall of the connector, the left side wall integrated into one piece of connector has the insert tube, just the insert tube with be linked together between the installation pipe, the through-hole has evenly been seted up to the inside wall a week of insert tube, the inside threaded connection of installation pipe has oil pipe, the oilhole has been seted up to oil pipe's lateral wall a week, just the oilhole with be linked together between the through-hole.

Preferably, the top of cylinder cap is pegged graft and is had the dust ring, just the inside wall of dust ring with the outside wall of piston rod is laminated mutually.

Preferably, the inner chamber of cylinder cap just is located the below of dust ring is provided with first sealing washer, just the inside wall of first sealing washer with the laminating of the outside wall of piston rod mutually.

Preferably, the upper side of the outer side wall of the piston body is positioned in an inner cavity of the cylinder barrel and is sleeved with a second sealing ring.

Preferably, the lower side of the outer side wall of the piston body is positioned in an inner cavity of the cylinder barrel and is sleeved with a guard ring.

Preferably, the inside wall of connector is provided with the third sealing washer, just the inside wall of third sealing washer with the laminating of the outside wall of oil pipe.

Preferably, the piston body with the joint has the cushion collar between the piston rod, just the inside wall of cushion collar with the outside wall of piston rod is laminated mutually.

Preferably, the connecting seat with between the holding ring and be located the equal joint of the front and back both sides wall of ball has the retaining ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. the soil shifting cylinder with the anti-loosening and oil seepage-proof mechanism for the excavator is characterized in that a connector is arranged at the connecting end of an oil inlet pipe and an oil outlet pipe of a cylinder barrel, the connector is used for connecting the oil pipe, when the oil pipe is filled with oil, oil in the oil pipe is discharged outwards through the oil holes on the periphery of the outer side wall, so that the oil pressure at the bottom of the oil pipe is reduced, and the oil holes are communicated with the through holes, so that the oil passes through the through holes and flows into the cylinder barrel, when the oil pipe is filled with oil, the oil in the cylinder barrel is output into the oil pipe through the oil outlet pipe, the oil holes and the through holes are matched for use, a plurality of backflow channels are formed on the periphery of the outer side wall of the oil pipe, the oil pressure at the bottom of the oil pipe is greatly reduced, the phenomenon that the oil body is impacted due to overlarge pressure release is avoided, compared with the traditional equipment, the traditional equipment is connected by arranging the connector instead of the traditional sealing ring, the problem of can't guarantee the stability of oil body in pressurization and row pressure process among the prior art is solved, fundamentally avoids taking place to advance the phenomenon that the junction of oil pipe and oil pipe takes place the oil impregnate, ensures the flow efficiency and the quality that this equipment internal oil body used.

2. This bulldozing hydro-cylinder for excavator with locking prevention of seepage oily mechanism, through set up steel column and holding ring in the connecting seat, and both sides set up the draw-in groove respectively about the inside wall of holding ring, when using, utilize the holding ring to connect the round pin axle of excavator link, and install the spline additional between round pin axle and holding ring, it is fixed to utilize the draw-in groove to carry out the buckle to the spline, set up the ball simultaneously between holding ring and connecting seat, utilize the ball to drive the holding ring and rotate in the connecting seat, and eliminated the produced resistance of holding ring at rotation in-process through the characteristic of ball, the sliding effect is improved, greatly reduced its surperficial probability that takes place wearing and tearing, thereby avoid taking place not hard up phenomenon, the security and the reliability of its actual use have been increased.

Drawings

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

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged sectional view of the cylinder barrel of FIG. 2A according to the present invention;

FIG. 4 is a schematic view of the internal structure of the cylinder barrel of the present invention;

FIG. 5 is an enlarged cross-sectional view of portion B of FIG. 4 according to the present invention;

fig. 6 is a schematic overall structure diagram of the connector of the present invention.

In the figure: 100. a cylinder barrel; 110. an oil inlet pipe; 120. an oil outlet pipe; 130. a cylinder cover; 131. a dust ring; 132. a first seal ring; 140. a piston rod; 141. a buffer sleeve; 150. a piston body; 151. a second seal ring; 152. a guard ring; 160. a connecting seat; 170. a positioning ring; 171. a card slot; 180. a ball bearing; 181. a retainer ring; 200. a connector; 210. installing a pipe; 220. an insertion tube; 221. a through hole; 230. a third seal ring; 240. an oil pipe; 241. and an oil hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a bulldozing oil cylinder with a locking and oil seepage preventing mechanism for an excavator, which solves the problem that the stability of an oil body in the pressurizing and pressure discharging processes cannot be ensured in the prior art, and eliminates the resistance generated by a positioning ring 170 in the rotating process through the characteristics of a ball 180, and please refer to fig. 1-6, and the bulldozing oil cylinder comprises a cylinder barrel 100 and a connector 200;

referring to fig. 1-6 again, the oil outlet pipe 120 and the oil inlet pipe 110 are respectively inserted into the upper side and the lower side of the right side wall of the cylinder barrel 100, the top of the cylinder barrel 100 is fixedly connected with the cylinder cover 130, the piston rod 140 is slidably connected inside the cylinder cover 130, the bottom of the piston rod 140 penetrates and extends to the bottom of the inner cavity of the cylinder barrel 100, the bottom of the piston rod 140 is fixedly connected with the piston body 150 in the inner cavity of the cylinder barrel 100, the bottom of the cylinder barrel 100 and the top of the piston rod 140 are fixedly connected with the connecting seat 160, the inside of the connecting seat 160 is rotatably connected with the positioning ring 170, the upper side and the lower side of the inner side wall of the positioning ring 170 are both provided with the slots 171, the ball 180 is rotatably connected between the connecting seat 160 and the positioning ring 170, the cylinder barrel 100 is used for providing a space for the movement of the piston rod 140 and the piston body 150, the oil outlet pipe 120 and the oil inlet pipe 110 are used for providing connection for the input and output of oil, the cylinder cover 130 is used for sealing the top of the cylinder barrel 100, the outer side wall of the piston rod 140 is protected, the piston rod 140 is used for making linear motion for a connecting end driving an external excavator, the piston body 150 is used for supporting the bottom of the piston rod 140 and driving the piston rod 140 to make linear motion in the cylinder 100, the connecting seat 160 is used for connecting and fixing the bottom of the cylinder 100 and the top of the piston rod 140, the positioning ring 170 is used for installing external connection equipment instead of a rotating shaft, the clamping groove 171 is used for inserting a spline so as to fix the position of the outer side wall of the external connection equipment, and the ball 180 is used for providing support for the positioning ring 170 to rotate in the connecting seat 160;

referring to fig. 1-6 again, the right side wall of the connector 200 is integrally formed with a mounting tube 210, the left side wall of the connector 200 is integrally formed with an insert tube 220, the insert tube 220 is communicated with the mounting tube 210, a through hole 221 is uniformly formed around the inner side wall of the insert tube 220, an oil tube 240 is threadedly connected to the inside of the mounting tube 210, an oil hole 241 is formed around the outer side wall of the oil tube 240 and is communicated with the through hole 221, the connector 200 is located at the upper and lower sides of the right side wall of the cylinder 100, specifically, the connector 200 is threadedly connected to the connecting end of the oil outlet tube 120 and the oil inlet tube 110 and is located at the upper and lower sides of the right side wall of the cylinder 100, the connector 200 is used for connecting the oil outlet tube 120, the oil inlet tube 110 and the oil tube 240, the mounting tube 210 is used for mounting and fixing the oil tube 240, the insert tube 220 is used for extending the connecting length of the oil tube 240 and fixing the connecting end of the oil tube 240, the through hole 221 is used for reducing the pressure around the bottom of the oil pipe 240, so that a return channel is formed between the through hole and the oil hole 241, the oil pipe 240 is used for outputting and inputting oil bodies, and the oil hole 241 is used for increasing the flow efficiency of the oil bodies in the oil pipe 240 and reducing the oil pressure inside the oil pipe 240.

Referring to fig. 4 again, in order to prevent dust in the air from falling into the cylinder 100 and prevent the oil in the cylinder 100 from being polluted, a dust ring 131 is inserted into the top of the cylinder cover 130, and the inner sidewall of the dust ring 131 is attached to the outer sidewall of the piston rod 140.

Referring to fig. 4 again, in order to improve the sealing effect between the cylinder head 130 and the piston rod 140, a first sealing ring 132 is disposed in the inner cavity of the cylinder head 130 and below the dust ring 131, and an inner side wall of the first sealing ring 132 is attached to an outer side wall of the piston rod 140.

Referring to fig. 4 again, in order to improve the sealing effect between the piston body 150 and the cylinder 100 and the flowing effect of the liquid in the cylinder 100, a second sealing ring 151 is sleeved on the upper side of the outer side wall of the piston body 150 and in the inner cavity of the cylinder 100.

Referring to fig. 4 again, in order to improve the overall strength of the piston body 150 and prolong the service life thereof, a guard ring 152 is sleeved on the lower side of the outer side wall of the piston body 150 and located in the inner cavity of the cylinder barrel 100.

Referring to fig. 5 again, in order to improve the sealing effect between the installation pipe 210 and the oil pipe 240 and prevent the oil body from leaking, the inner sidewall of the connector 200 is provided with a third sealing ring 230, and the inner sidewall of the third sealing ring 230 is attached to the outer sidewall of the oil pipe 240.

Referring to fig. 4 again, in order to absorb the impact force generated between the piston rod 140 and the piston body 150 during the sliding process, a buffer sleeve 141 is clamped between the piston body 150 and the piston rod 140, and the inner sidewall of the buffer sleeve 141 is attached to the outer sidewall of the piston rod 140.

Referring to fig. 1-4 again, in order to protect the surface of the ball 180 and prevent impurities from adhering to the surface of the ball 180, retaining rings 181 are clamped between the connecting seat 160 and the positioning ring 170 and between the front and rear sidewalls of the ball 180.

When in specific use, the person skilled in the art inserts the pin shafts of the excavator connecting ends into the positioning rings 170 in the connecting seats 160 on both sides respectively, and inserts the splines between the positioning rings 170 and the pin shafts to ensure tight connection between the splines and the clamping grooves 171, thereby achieving the purpose of installing and locking the pin shafts, installs the connecting heads 200 at the connecting ends of the oil inlet pipe 110 and the oil outlet pipe 120 by screw threads, and then screws the oil pipe 240 into the installation pipe 210 clockwise until the oil holes 241 and the through holes 221 are leveled with each other, thereby completing the installation step of the device, by opening the oil inlet pipe 110, the oil body in the oil pipe 240 is injected into the bottom of the inner cavity of the cylinder 100, and when the oil body is injected, the oil pressure at the bottom of the oil pipe 240 is reduced by using the through holes 221 and the oil holes 241 in cooperation, the oil filling smoothness of the oil inlet pipe 110 is ensured, because the oil body is continuously injected into the cylinder 100, the piston body 150 is driven to push downwards by the oil pressure of the piston, so that the piston rod 140 moves outwards, the oil outlet pipe 120 is opened, the oil inlet pipe 110 is closed, the oil body in the cylinder 100 is discharged through the oil outlet pipe 120, the piston body 150 loses the driving force of the oil body, the piston rod 140 is driven to move downwards, meanwhile, in the discharging process of the oil body, a backflow channel is formed between the through hole 221 and the oil hole 241, the oil body passes through the through hole 221 and flows back into the oil pipe 240 in the discharging process, the impact force at the bottom of the oil pipe 240 is reduced, the oil outlet pipe 120 is closed after the oil body in the cylinder 100 is completely discharged, the processes are repeated continuously, and the sliding motion of the piston rod 140 is used for driving the excavator to perform earth moving operation.

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.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (8)

1. The utility model provides a bulldozing oil cylinder for excavator with locking prevention of seepage oily mechanism which characterized in that: the oil cylinder comprises a cylinder barrel (100) and connectors (200), wherein the connectors (200) are positioned on the upper side and the lower side of the right side wall of the cylinder barrel (100), and an oil outlet pipe (120) and an oil inlet pipe (110) are respectively inserted into the upper side and the lower side of the right side wall of the cylinder barrel (100);

the top of the cylinder barrel (100) is fixedly connected with a cylinder cover (130), the inside of the cylinder cover (130) is connected with a piston rod (140) in a sliding manner, the bottom of the piston rod (140) penetrates through and extends to the bottom of the inner cavity of the cylinder barrel (100), the bottom of the piston rod (140) is fixedly connected with a piston body (150) in the inner cavity of the cylinder barrel (100), the bottom of the cylinder barrel (100) and the top of the piston rod (140) are fixedly connected with a connecting seat (160), the inside of the connecting seat (160) is rotatably connected with a positioning ring (170), the upper side and the lower side of the inner side wall of the positioning ring (170) are respectively provided with a clamping groove (171), a ball (180) is rotatably connected between the connecting seat (160) and the positioning ring (170), the right side wall of the connecting head (200) is integrally formed with an installation pipe (210), and the left side wall of the connecting head (200) is integrally formed with an insertion pipe (220), and the insert pipe (220) is communicated with the installation pipe (210), a through hole (221) is uniformly formed in one circle of the inner side wall of the insert pipe (220), an oil pipe (240) is connected to the inner thread of the installation pipe (210), an oil hole (241) is formed in one circle of the outer side wall of the oil pipe (240), and the oil hole (241) is communicated with the through hole (221).

2. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 1, wherein: the top of cylinder cap (130) is pegged graft and is had dust ring (131), just the inside wall of dust ring (131) with the outside wall laminating of piston rod (140).

3. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 2, wherein: the inner chamber of cylinder cap (130) just is located the below of dust ring (131) is provided with first sealing washer (132), just the inside wall of first sealing washer (132) with the outside wall laminating of piston rod (140).

4. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 1, wherein: and a second sealing ring (151) is sleeved on the upper side of the outer side wall of the piston body (150) and positioned in the inner cavity of the cylinder barrel (100).

5. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 1, wherein: and a guard ring (152) is sleeved on the lower side of the outer side wall of the piston body (150) and is positioned in the inner cavity of the cylinder barrel (100).

6. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 1, wherein: the inside wall of connector (200) is provided with third sealing washer (230), just the inside wall of third sealing washer (230) with the outside wall laminating of oil pipe (240) mutually.

7. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 1, wherein: the piston body (150) with the joint has cushion collar (141) between piston rod (140), just the inside wall of cushion collar (141) with the outside wall laminating of piston rod (140) mutually.

8. The bulldozer cylinder with the anti-loose and oil-seepage-proof mechanism for the excavator according to claim 1, wherein: and check rings (181) are clamped between the connecting seat (160) and the positioning ring (170) and positioned on the front side wall and the rear side wall of the ball (180).

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