CN218320447U

CN218320447U - Double-telescopic oil cylinder control system and hoisting equipment

Info

Publication number: CN218320447U
Application number: CN202221550231.6U
Authority: CN
Inventors: 曹凯
Original assignee: Zhonglian Hengtong Machinery Co Ltd
Current assignee: Zhonglian Hengtong Machinery Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-01-17
Anticipated expiration: 2032-06-20

Abstract

The utility model provides a two flexible hydro-cylinder control system and hoisting equipment relates to hoisting equipment technical field. The double-telescopic oil cylinder control system comprises a second telescopic oil cylinder, a second balance valve, a first telescopic oil cylinder, a first balance valve and a control valve group which are arranged in sequence, wherein a rod cavity of the second telescopic oil cylinder is communicated with a rod cavity of the first telescopic oil cylinder through the second balance valve, a rodless cavity of the second telescopic oil cylinder is communicated with the control valve group through the second balance valve, and the rod cavity and the rodless cavity of the first telescopic oil cylinder are communicated with the control valve group through the first balance valve. Based on the technical scheme of the utility model, control first flexible hydro-cylinder and the flexible hydro-cylinder of second through first balanced valve and the balanced valve of second respectively, improved the stationarity of first flexible hydro-cylinder and the flexible hydro-cylinder of second at flexible in-process.

Description

Double-telescopic oil cylinder control system and hoisting equipment

Technical Field

The utility model relates to a hoisting equipment technical field especially relates to a two flexible hydro-cylinder control system and hoisting equipment.

Background

The suspension arm is used for suspending and carrying objects, the conventional suspension arm mainly adopts a box-type structure and is connected by a telescopic oil cylinder, the length and the inclination angle of the suspension arm are changed by controlling the extension and retraction of the telescopic oil cylinder, the lifting height and the working radius required by actual working conditions are achieved, and different installation forms of the telescopic oil cylinder can greatly influence the extension and retraction performance.

At present, the five-section arm of the automobile crane adopts a structural mode of double telescopic oil cylinders, wherein the first telescopic oil cylinder controls the telescopic movement of the two-section arm, and the second telescopic oil cylinder controls the telescopic movement of other sections of arm. The rod cavities of the two telescopic oil cylinders are communicated, and the two rodless cavities are communicated through a telescopic sequence valve. Because the specifications of the first telescopic oil cylinder and the second telescopic oil cylinder are different and share the same balance valve, the stability of the oil cylinder in the telescopic process is poor easily.

SUMMERY OF THE UTILITY MODEL

To the problems in the prior art, the application provides a double-telescopic oil cylinder control system and hoisting equipment so as to improve the stability of an oil cylinder in the telescopic process.

An aspect of the utility model provides a two flexible hydro-cylinder control system, two flexible hydro-cylinder control system include the flexible hydro-cylinder of second, second balanced valve, first flexible hydro-cylinder, first balanced valve and the valves that set up according to the preface, the flexible hydro-cylinder of second has the pole chamber to pass through the second balanced valve with the pole chamber that has of first flexible hydro-cylinder is linked together, the flexible hydro-cylinder of second does not have the pole chamber to pass through the second balanced valve with the valves is linked together, the pole chamber that has of first flexible hydro-cylinder all passes through with no pole chamber first balanced valve with the valves are linked together.

As a further improvement of the above technical solution:

the control valve group comprises a telescopic switching valve, a reversing valve and an oil supply assembly communicated with the reversing valve, the reversing valve is communicated with the telescopic switching valve, the reversing valve is communicated with a rod cavity of the first telescopic oil cylinder through a first balance valve, the telescopic switching valve is communicated with a rodless cavity of the first telescopic oil cylinder through a first balance valve, and the telescopic switching valve is communicated with a rodless cavity of the second telescopic oil cylinder.

In the double-telescopic-cylinder control system, the telescopic switching valve is further connected with an energy accumulator.

In the above control system with two telescopic cylinders, further, a part of the pipeline where the telescopic switching valve is communicated with the rodless cavity of the second telescopic cylinder is located in the first telescopic cylinder.

In the double-telescopic-cylinder control system, the reversing valve is an electric proportional reversing valve.

The double-telescopic oil cylinder control system further comprises an oil supply assembly, wherein the oil supply assembly comprises an oil pump and an engine connected with the oil pump.

In the above dual telescopic cylinder control system, further, a shuttle valve is installed in the second balance valve and/or the first balance valve, and the shuttle valve is used for controlling the opening and closing of the second balance valve or the first balance valve according to a pressure difference.

The utility model discloses an on the other hand provides a hoisting equipment, hoisting equipment has two flexible hydro-cylinder control system as foretell.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

The utility model provides a pair of two flexible hydro-cylinder control system and hoisting equipment compares with prior art, possesses following beneficial effect at least: the utility model provides an among the two telescopic cylinder control system, control first telescopic cylinder and the flexible hydro-cylinder of second through first balanced valve and second balanced valve respectively, improved the stationarity of first telescopic cylinder and the flexible hydro-cylinder of second at flexible in-process.

In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible and obvious, 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 invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic structural diagram of a dual telescopic cylinder control system provided by the embodiment of the present invention.

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

Reference numerals:

100-a double telescopic oil cylinder control system; 110-a second telescopic oil cylinder; 120-a second counter balance valve; 130-a first telescopic oil cylinder; 140-a first counter-balance valve; 150-telescoping switching valve; 160-a reversing valve; 170-an accumulator; 180-an oil pump; 190-engine.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to 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", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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

The embodiment of the utility model provides a two flexible hydro-cylinder control system 100 to improve the stationarity of the flexible in-process of hydro-cylinder.

Referring to fig. 1, an embodiment of the present invention provides a dual telescopic cylinder control system 100, the dual telescopic cylinder control system 100 includes a second telescopic cylinder 110, a second balance valve 120, a first telescopic cylinder 130, a first balance valve 140 and a control valve set, a rod cavity of the second telescopic cylinder 110 is communicated with a rod cavity of the first telescopic cylinder 130 through the second balance valve 120, a rod-free cavity of the second telescopic cylinder 110 is communicated with the control valve set through the second balance valve 120, and the rod cavity and the rod-free cavity of the first telescopic cylinder 130 are communicated with the control valve set through the first balance valve 140.

The utility model provides an among the two telescopic cylinder control system 100, control first telescopic cylinder 130 and the flexible hydro-cylinder 110 of second through first balanced valve 140 and second balanced valve 120 respectively, improved the stationarity of first telescopic cylinder 130 and the flexible hydro-cylinder 110 of second at flexible in-process.

The embodiment of the utility model provides a two telescopic cylinder control system 100, furtherly, the valve unit includes flexible diverter valve 150, switching-over valve 160 and the fuel feeding unit who is linked together with switching-over valve 160, switching-over valve 160 is linked together with flexible diverter valve 150, and switching-over valve 160 is linked together through the pole chamber that has of first balanced valve 140 and first telescopic cylinder 130, flexible diverter valve 150 is linked together through the rodless chamber of first balanced valve 140 with first telescopic cylinder 130, and flexible diverter valve 150 is linked together with the rodless chamber of the telescopic cylinder 110 of second. In this embodiment, the directional valve 160 is an electrically proportional directional valve 160.

The working principle is as follows:

when the oil cylinder extends: when the Y1 of the electric proportional directional valve 160 is powered, the hydraulic oil firstly flows through the telescopic switching valve 150 and flows out from the oil port a, and then enters the rodless cavity of the first telescopic cylinder 130 from the port a through the balance valve, and the hydraulic oil in the rod cavity of the first telescopic cylinder 130 flows out from the port B and flows through the first balance valve 140 to return oil; treat first flexible hydro-cylinder 130 and expand the back completely, the Y3 of flexible diverter valve 150 gets electricity, the case of flexible diverter valve 150 moves to the left, hydraulic oil flows out from the b mouth, get into first flexible hydro-cylinder 130 through the C mouth, the rodless chamber that gets into the flexible hydro-cylinder 110 of second through second balance valve 120 after the outflow, the flexible hydro-cylinder 110 of second has the pole chamber to establish ties with the pole chamber that has of first flexible hydro-cylinder 130, therefore, hydraulic oil flows through the second balance valve 120 and gets into the oil return again behind the pole chamber that has of first flexible hydro-cylinder 130:

when the oil cylinder contracts: the Y2 of the electric proportional directional valve 160 is electrified, hydraulic oil enters a rod cavity of the first telescopic cylinder 130 from the port B, the hydraulic oil flows out of the first telescopic cylinder 130 and then enters a rod cavity of the second telescopic cylinder 110 through the second balance valve 120, hydraulic oil in a rodless cavity of the second telescopic cylinder 110 flows through the second balance valve 120 and enters the first telescopic cylinder 130 and flows out of the port C, the Y3 of the telescopic switching valve 150 is electrified, a valve core of the telescopic switching valve 150 moves to the left, the hydraulic oil returns through the port B of the telescopic switching valve 150, after the second telescopic cylinder 110 retracts completely, the Y3 of the telescopic switching valve 150 is electrified, the valve core of the telescopic switching valve 150 resets, and the hydraulic oil in the rodless cavity of the first telescopic cylinder 130 starts to flow out from the port A and returns through the first balance valve 140 and then returns from the port a of the telescopic switching valve 150.

The embodiment of the utility model provides a two flexible hydro-cylinder control system 100 can realize stretching first hydro-cylinder earlier and stretching the second hydro-cylinder again, receives the function that the first hydro-cylinder was received again to the second hydro-cylinder earlier, realizes the independent control to first flexible hydro-cylinder 130 and the flexible hydro-cylinder 110 of second, and when the flexible back of a hydro-cylinder, has the locking function, avoids two hydro-cylinder linkages, avoids causing the operation risk.

The embodiment of the utility model provides a two telescopic cylinder control system 100, further, telescopic switching valve 150 still is connected with energy storage 170. The accumulator 170 is used to drive the spool of the telescopic switching valve 150 to move, and may alleviate impact during the spool switching process. The pipeline of the telescopic switching valve 150 communicated with the rodless cavity of the second telescopic cylinder 110 is positioned in the first telescopic cylinder 130, so that the pipeline arrangement is more compact, and the problems that the space of the boom cavity is narrow and the pipeline is not easy to arrange are solved. The oil supply assembly includes an oil pump 180 and an engine 190 connected thereto.

The embodiment of the utility model provides a two telescopic cylinder control system 100, furtherly installs the shuttle valve in second balanced valve 120 and/or the first balanced valve 140, and the shuttle valve is used for according to the pressure differential control at second balanced valve 120 or first balanced valve 140 both ends second balanced valve 120 or the switching of first balanced valve 140 to this reaches the purpose of controlling first telescopic cylinder 130 or the telescopic cylinder 110 of second.

The embodiment of the utility model provides a still provide a hoisting equipment, this hoisting equipment has two telescopic cylinder control system 100 as above-mentioned any embodiment provides. The specific structure of the double-telescopic-cylinder control system 100 refers to the above embodiments, and since the hoisting equipment adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the invention 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 invention. 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 invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. The utility model provides a two telescopic cylinder control system, characterized in that, two telescopic cylinder control system (100) are including the flexible hydro-cylinder of second (110), second balanced valve (120), first telescopic cylinder (130), first balanced valve (140) and the valve unit that sets up according to the preface, the pole chamber that has of second telescopic cylinder (110) passes through second balanced valve (120) with the pole chamber that has of first telescopic cylinder (130) is linked together, the no pole chamber of second telescopic cylinder (110) passes through second balanced valve (120) with the valve unit is linked together, the pole chamber that has of first telescopic cylinder (130) and no pole chamber all pass through first balanced valve (140) with the valve unit control valve unit is linked together.

2. The dual telescopic cylinder control system according to claim 1, wherein the control valve set includes a telescopic switching valve (150), a direction switching valve (160), and an oil supply assembly in communication with the direction switching valve (160), the direction switching valve (160) is in communication with the telescopic switching valve (150), and the direction switching valve (160) is in communication with the rod chamber of the first telescopic cylinder (130) through the first balance valve (140), the telescopic switching valve (150) is in communication with the rodless chamber of the first telescopic cylinder (130) through the first balance valve (140), and the telescopic switching valve (150) is in communication with the rodless chamber of the second telescopic cylinder (110).

3. The dual telescopic cylinder control system according to claim 2, wherein an accumulator (170) is further connected to the telescopic switching valve (150).

4. The dual telescopic cylinder control system according to claim 2, wherein a portion of the piping of the telescopic switching valve (150) communicating with the rodless chamber of the second telescopic cylinder (110) is located within the first telescopic cylinder (130).

5. The dual telescopic ram control system according to claim 2, wherein the directional valve (160) is an electrically proportional directional valve (160).

6. The dual telescopic cylinder control system according to claim 2, wherein the oil supply unit includes an oil pump (180) and an engine (190) connected thereto.

7. The dual telescopic cylinder control system according to claim 1, wherein a shuttle valve is installed in the second balance valve (120) and/or the first balance valve (140), and the shuttle valve is used for controlling the opening and closing of the second balance valve (120) or the first balance valve (140) according to a pressure difference.

8. A hoisting device, characterized in that the hoisting device is provided with a double telescopic cylinder control system (100) according to any of claims 1 to 7.