CN218862973U - Inner oil way oil cylinder for railway road maintenance machinery - Google Patents

Abstract

The utility model discloses an interior oil circuit hydro-cylinder that railway road maintaining machinery was used belongs to the hydraulic equipment field. An internal oil circuit cylinder comprising: a cylinder barrel and a piston; one end of the cylinder barrel is provided with an opening, the piston extends into the cylinder barrel through the opening, the end face of the cylinder barrel is provided with an oil way, the inner end of the piston is provided with a counter bore, an inner guide pipe is arranged in the counter bore, one end of the inner guide pipe is communicated with the oil way, and the other end of the inner guide pipe extends into the counter bore; an outer guide sleeve is sleeved at the outer end of the piston, the outer guide sleeve is detachably and fixedly connected with the inner wall of the cylinder barrel, and the inner guide pipe is in threaded connection with the inner wall of the counter bore.

Description

Inner oil cylinder for railway maintenance machinery

Technical Field

The utility model relates to a hydraulic equipment field, concretely relates to interior oil circuit hydro-cylinder that railway road maintaining machinery was used.

Background

The oil cylinder has common application in the industry of large machines, in particular to some cantilever type and lifting type engineering vehicles, such as: the crane, the contact net overhaul operation vehicle, the contact net comprehensive operation vehicle and the like, wherein the vehicles need to rigidly connect the working host machine with the walking chassis through the oil cylinder in the operation process. The stability of the oil cylinder oil way plays a vital role in construction safety and normal operation of a track line. Most hydraulic cylinders adopt an external oil way to supply and discharge oil for the hydraulic cylinders, the hydraulic cylinders with the external oil way are simple in principle, easy to implement and relatively low in production cost, but the oil way is arranged outside the cylinder body and easily damages oil pipes due to collision, so that the hydraulic cylinders cannot supply oil, and the performance and the reliability of the hydraulic cylinders with the external oil supply are relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides an interior oil circuit hydro-cylinder that railway road maintaining machinery used.

The purpose of the utility model can be realized by the following technical scheme:

an internal oil cylinder for a railway maintenance machine, comprising: a cylinder barrel and a piston;

one end of the cylinder barrel is provided with an opening, the piston extends into the cylinder barrel through the opening, the end face of the cylinder barrel is provided with an oil way, the inner end of the piston is provided with a counter bore, an inner guide pipe is arranged in the counter bore, one end of the inner guide pipe is communicated with the oil way, and the other end of the inner guide pipe extends into the counter bore;

an outer guide sleeve is sleeved at the outer end of the piston, the outer guide sleeve is detachably and fixedly connected with the inner wall of the cylinder barrel, and the inner guide pipe is in threaded connection with the inner wall of the counter bore.

Optionally, a groove is formed in the outer end of the piston, a spherical washer is arranged in the groove, the spherical washer is in hinged contact with the groove, a hoop is fixedly connected to the outside of the spherical washer, and a pedal anvil is fixedly connected to the outer end of the spherical washer.

Optionally, a leather sheath is arranged between the hoop and the cylinder barrel, the leather sheath surrounds the piston, one end of the leather sheath is fixedly connected with the inner end of the hoop, and the other end of the leather sheath is fixedly connected with the cylinder barrel.

Optionally, an inner conduit is threadedly connected to the cylinder.

Optionally, the external surface of the anvil has a grid-like texture.

The utility model has the advantages that:

the utility model discloses an interior oil circuit cylinder has the oilhole entering monobloc piston of crossing of the outer cylindrical surface of hydraulic oil accessible monobloc piston in the pole intracavity inside, gets back to outside oil tank through the oil circuit of establishing in interior pipe, the cylinder, avoids causing hydraulic oil to leak the scheduling problem because of factors such as outside seal, collision damage.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a sectional view of a cylinder of the present application.

The parts corresponding to the reference numerals in the figures are as follows:

1. a cylinder barrel; 2. a piston; 3. a leather sheath; 4. a hoop; 5. an inner conduit; 6. an oil path; 7. a spherical washer; 8. and (5) treading the anvil.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1, an internal cylinder for a railway maintenance machine includes: a cylinder barrel 1 and a piston 2; an opening is formed in one end of the cylinder barrel 1, the piston 2 extends into the cylinder barrel 1 through the opening, an oil path 6 is formed in the end face of the cylinder barrel 1, a counter bore is formed in the inner end of the piston 2, an inner guide pipe 5 is arranged in the counter bore, one end of the inner guide pipe 5 is communicated with the oil path 6, and the other end of the inner guide pipe 5 extends into the counter bore; an outer guide sleeve is sleeved at the outer end of the piston 2, the outer guide sleeve is detachably and fixedly connected with the inner wall of the cylinder barrel 1, and the inner guide pipe 5 is in threaded connection with the inner wall of the counter bore.

Optionally, a groove is formed in the outer end of the piston 2, a spherical gasket 7 is arranged in the groove, the spherical gasket 7 is in hinged contact with the groove, a hoop 4 is fixedly connected to the outside of the spherical gasket 7, and a pedal anvil 8 is fixedly connected to the outer end of the spherical gasket 7.

Optionally, a leather sheath 3 is arranged between the hoop 4 and the cylinder barrel 1, the leather sheath 3 surrounds the piston 2, one end of the leather sheath 3 is fixedly connected with the inner end of the hoop 4, and the other end of the leather sheath 3 is fixedly connected with the cylinder barrel 1.

Optionally, an inner conduit 5 is screwed to the cylinder 1.

Optionally, the outer surface of the anvil 8 has a grid-like texture.

Specifically, the lower plane of the spherical washer 7 and the upper plane of the pedal anvil 8 form a friction pair, and lubricating grease is uniformly coated to reduce the friction coefficient; the spherical surface screw is in hinged contact with the spherical surface gasket 7, the spherical surface gasket 7 is in hinged contact with the integral piston 2, the spherical surface screw and the rod of the piston 2 are locked through a steel ball, and the spherical surface gasket 7 can swing freely after installation. When the oil cylinder extends out, the pedal anvil 8 and the spherical washer 7 are connected through the hoop 4, and the outer surface of the pedal anvil 8 is processed into a grid shape so as to increase the friction force with the chassis and ensure that the pedal anvil 8 has no relative displacement with the chassis. When the oil cylinder is subjected to radial force, the pedal anvil 8 slides with the spherical washer 7, so that the damage of the radial force to the oil cylinder is reduced. When the cylinder is retracted, the anvil 8 is brought back into position by the hoop 4.

The leather sheath 3 plays a role in preventing impurities from entering the internal friction pair (the pedal anvil 8 and the spherical gasket 7, the spherical gasket 7 and the integral piston 2) in the working process of the oil cylinder. The leather sheath 3 and the guide sleeve adopt a flange pressing plate connection mode, and the other end is tightly held with the hoop through the pre-pressure of the steel wire check ring.

The whole piston 2, the spherical washer 7 and the spherical screw (pin) nail are combined to complete the self-adaption of the deflection of the supporting position (chassis fulcrum) of the oil cylinder, thereby compensating the deflection amount of the axial force of the oil cylinder. The integral bending moment of the oil cylinder caused by the unbalance loading of the axial force is avoided, and the safety coefficient of the oil cylinder is effectively improved.

The floating guide sleeve and the integral piston 2 are provided with threads on the circumferential surface and are fastened through threads, the inner guide pipe 5 and the cylinder barrel 1 are also fastened through threads, and sealing rings are arranged at the fastening parts of the threads at two positions to prevent hydraulic oil from being removed. Meanwhile, the inner wall of the floating guide sleeve is also provided with a guide belt and a sealing ring, so that hydraulic oil is prevented from being discharged inwards when the piston 2 rod stretches.

The outer cylindrical surface of monobloc piston 2 is equipped with the oilhole, and hydraulic oil accessible monobloc piston 2 outer cylindrical surface of rod intracavity crosses the oilhole and gets into inside monobloc piston 2, gets back to outside oil tank through interior pipe 5, the oil circuit 6 that establishes in the cylinder 1, avoids causing hydraulic oil to leak scheduling problem because of factors such as external seal, collision damage.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (6)

1. An inner oil way oil cylinder for railway maintenance machinery is characterized by comprising a cylinder barrel and a piston,

an oil inlet channel is formed in the outer wall of the cylinder barrel, an inner guide pipe is embedded into the end portion of the piston, and the inner guide pipe and the oil way form an internal oil way.

2. The oil cylinder according to claim 1, characterized in that a groove is formed in the outer end of the piston, a spherical gasket is arranged in the groove and is in hinged contact with the groove, a hoop is fixedly connected to the outside of the spherical gasket, and a pedal anvil is fixedly connected to the outer end of the spherical gasket.

3. The cylinder according to claim 2, wherein a leather sheath is arranged between the hoop and the cylinder barrel, the leather sheath surrounds the piston, one end of the leather sheath is fixedly connected with the inner end of the hoop, and the other end of the leather sheath is fixedly connected with the cylinder barrel.

4. The cylinder of claim 1, wherein the inner conduit is threadably connected to the cylinder barrel.

5. The cylinder of claim 2, wherein the outer surface of the anvil has a grid-like texture.

6. The utility model provides an interior oil circuit hydro-cylinder that railway maintenance machinery used which characterized in that includes: a cylinder barrel and a piston;

one end of the cylinder barrel is provided with an opening, the piston extends into the cylinder barrel through the opening, the end face of the cylinder barrel is provided with an oil way, the inner end of the piston is provided with a counter bore, an inner guide pipe is arranged in the counter bore, one end of the inner guide pipe is communicated with the oil way, and the other end of the inner guide pipe extends into the counter bore;

an outer guide sleeve is sleeved at the outer end of the piston, the outer guide sleeve is detachably and fixedly connected with the inner wall of the cylinder barrel, and the inner guide pipe is in threaded connection with the inner wall of the counter bore.

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