CN220668006U - Telescopic cylinder, telescopic arm and crane - Google Patents

Abstract

The utility model provides a telescopic oil cylinder, a telescopic arm and a crane, and relates to the technical field of hoisting mechanical equipment. The telescopic oil cylinder comprises a cylinder barrel and a piston rod which is sleeved in the cylinder barrel and can stretch out and draw back relative to the cylinder barrel, a plurality of oil conveying pipelines are arranged in the rod body of the piston rod, and the oil conveying pipelines are coaxially arranged. Because a plurality of oil pipeline are coaxial to be set up in the body of rod of piston rod, compare in the mode that current a plurality of oil pipeline are circumference distribution in the piston body of rod hole, can be applicable to the less piston body of rod of size, solve the problem that a plurality of oil pipeline distribute in the less piston rod body of size from this.

Description

Telescopic cylinder, telescopic arm and crane

Technical Field

The utility model relates to the technical field of hoisting mechanical equipment, in particular to a telescopic cylinder, a telescopic arm and a crane.

Background

At present, in the telescopic boom of a crane, a plurality of telescopic oil cylinders are needed, in order to simplify oil transmission pipelines of the telescopic oil cylinders, the oil transmission pipelines are connected in series or in parallel, a plurality of oil transmission pipelines are distributed in an inner hole of a piston rod body of the telescopic oil cylinder, and the plurality of oil transmission pipelines are circumferentially distributed in the inner hole of the piston rod body at present, but the distribution mode can only be realized in a piston rod body with a larger size.

Disclosure of Invention

To the problem among the above-mentioned prior art, this application provides a flexible hydro-cylinder, flexible arm and hoist, can solve the problem that many oil pipeline distribute in the piston rod body that the size is less.

The telescopic oil cylinder comprises a cylinder barrel and a piston rod sleeved in the cylinder barrel and capable of telescoping relative to the cylinder barrel, wherein a plurality of oil conveying pipelines are arranged in a rod body of the piston rod, and the oil conveying pipelines are coaxially arranged.

As a further improvement of the above technical scheme:

the telescopic oil cylinder is characterized in that the oil pipeline and the piston rod are coaxially arranged.

According to the telescopic oil cylinder, further, the two annular sealing grooves are formed in the inner side wall of the cylinder barrel at intervals along the axial direction of the inner side wall of the cylinder barrel, U-shaped rings are arranged in the two annular sealing grooves, and the U-shaped rings are in sealing contact with the piston rod.

According to the telescopic oil cylinder, further, the stepped shafts are arranged on the outer side wall of the cylinder barrel along the same radial direction.

Another aspect of the present utility model provides a telescopic arm comprising a telescopic ram as described above.

A further aspect of the utility model provides a crane having a telescopic boom as described above.

The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present utility model can be achieved.

Compared with the prior art, the telescopic oil cylinder, the telescopic arm and the crane provided by the utility model have the following beneficial effects: in this flexible hydro-cylinder, because a plurality of oil pipeline are coaxial setting in the body of rod of piston rod, compare in the mode that current a plurality of oil pipeline are circumference distribution in the piston rod body hole, can be applicable to the less piston rod body of size, solve a plurality of oil pipeline and distribute in the less piston rod body of size from this.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic structural diagram of a telescopic cylinder according to an embodiment of the present utility model;

fig. 2 shows a schematic structural diagram of a piston rod of a telescopic cylinder according to an embodiment of the present utility model;

fig. 3 shows an enlarged view of region a in fig. 1.

In the drawings, like parts are designated with like reference numerals. The figures are not to scale.

Reference numerals:

100-telescopic oil cylinders, 110-cylinder barrels, 111-annular sealing grooves, 112-U-shaped rings, 113-stepped shafts, 120-piston rods and 130-oil pipelines.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The utility model will be further described with reference to the accompanying drawings.

The embodiment of the utility model provides a telescopic oil cylinder 100, which can solve the problem that a plurality of oil pipelines 130 are distributed in a piston rod 120 with a smaller size.

Referring to fig. 1 and 2, in the telescopic cylinder 100 provided by the embodiment of the utility model, the telescopic cylinder 100 includes a cylinder 110 and a piston rod 120 sleeved in the cylinder 110 and capable of telescoping relative to the cylinder 110, a plurality of oil pipelines 130 are disposed in a rod body of the piston rod 120, and the plurality of oil pipelines 130 are coaxially disposed.

In the telescopic cylinder 100 provided by the embodiment of the utility model, because the plurality of oil delivery pipelines 130 are coaxially arranged in the rod body of the piston rod 120, compared with the existing mode that the plurality of oil delivery pipelines 130 are circumferentially distributed in the inner hole of the piston rod 120 body, the telescopic cylinder can be suitable for the piston rod 120 body with smaller size, thereby solving the problem that the plurality of oil delivery pipelines 130 are distributed in the piston rod 120 body with smaller size.

Referring to fig. 2, in the telescopic cylinder 100 according to the embodiment of the present utility model, an oil delivery pipeline 130 and a piston rod 120 are coaxially disposed. Referring to fig. 3, two annular seal grooves 111 are provided on the inner side wall of the cylinder 110 at intervals along the axial direction, and a U-shaped ring 112 is installed in each of the two annular seal grooves 111, and the U-shaped ring 112 is in sealing contact with the piston rod 120. The telescopic cylinder 100 provided by the embodiment of the utility model adopts the double U-shaped rings 112 for sealing, solves the problem that the piston rod 120 is not sealed and put down because of small size difference Shi Site, and the U-shaped rings 112 can be made of different materials, thereby being better suitable for high-low pressure and high-low temperature environments.

Referring to fig. 1, the outer sidewall of the cylinder 110 is provided with stepped shafts 113 along the same radial direction. The telescopic cylinder 100 provided by the embodiment of the present utility model is installed through the stepped shaft 113, thereby solving the problem of insufficient installation space when a plurality of telescopic cylinders 100 are placed in parallel,

the embodiment of the utility model also provides a telescopic arm, which is provided with the telescopic oil cylinder 100 provided by any embodiment. The specific structure of the telescopic cylinder 100 refers to the above embodiments, and since the telescopic arm adopts all the technical solutions of all the embodiments, the telescopic cylinder at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

The embodiment of the utility model further provides a crane, which is provided with the telescopic boom provided by any one of the embodiments. The specific structure of the telescopic boom refers to the above embodiments, and because the crane adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present utility model. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (4)

1. The utility model provides a flexible hydro-cylinder, its characterized in that, flexible hydro-cylinder includes the cylinder and overlaps locates in the cylinder and can be relative the flexible piston rod of cylinder, be equipped with many oil pipeline in the body of rod of piston rod, and a plurality of oil pipeline is coaxial to be set up, the inside wall of cylinder is along its axial interval be equipped with two annular seal grooves, two all install the U-shaped circle in the annular seal groove, the U-shaped circle with piston rod sealing contact, the step axle is all installed along its same radial both sides to the lateral wall of cylinder.

2. The telescopic ram of claim 1, wherein the oil delivery line is coaxially disposed with the piston rod.

3. A telescopic boom, characterized in that it comprises a telescopic cylinder according to any one of claims 1 to 2.

4. A crane, characterized in that it has a telescopic boom according to claim 3.