CN219492728U - Control valve group of turnover arm oil cylinder - Google Patents

Abstract

The utility model discloses a control valve group of a turnover arm oil cylinder, which comprises a first balance valve (1), a second balance valve (2), a first oil way (3), a second oil way (4), a turnover oil cylinder (5) and oil ports V1, V2, C1 and C2, wherein the oil ports V1 and V2 are connected with an oil inlet pipeline or an oil return pipeline, the oil port V1 is communicated with a rodless cavity of the turnover oil cylinder through the first balance valve and the oil port C1, the oil port V2 is communicated with a rod cavity of the turnover oil cylinder through the second balance valve and the oil port C2, meanwhile, the oil port V1 is connected with a control end of the second balance valve through the first oil way, the oil port V2 is connected with a control end of the first balance valve through the second oil way, a first switch valve (6) is arranged on the first oil way, the oil port C1 is communicated with the oil port C2 through a third oil way, and a second switch valve (7) is arranged on the third oil way. The utility model shortens the reset time of the turning arm and improves the turning work efficiency.

Description

Control valve group of turnover arm oil cylinder

Technical Field

The utility model relates to a prefabricated part turning arm, in particular to a turning arm oil cylinder control valve group.

Background

The existing prefabricated part is turned over by placing the prefabricated part on a turning arm and controlling the turning arm to achieve 90-degree turning through a turning oil cylinder. The specific overturning process is shown in fig. 1, wherein a dotted line is the initial position of an overturning arm A, a solid line is the position of the overturning arm A after overturning by 90 degrees, a product (a prefabricated part) is placed on the overturning arm when the overturning arm A is in the initial position, and then the overturning arm is controlled to overturn by 90 degrees through an overturning oil cylinder, so that the required product state is achieved; after the product is lifted away, the overturning arm overturns back by 90 degrees to return to the initial position, and overturning of the next product is performed.

As shown in fig. 2, the existing control valve set for a tilting cylinder mainly includes: a first balance valve 1, a second balance valve 2, a first oil path 3, a second oil path 4, and 4 oil ports V1, V2 and C1, C2; wherein C1 connects the rodless chamber of upset hydro-cylinder 5, and C2 connects the pole chamber of upset hydro-cylinder 5, and V1 and V2 are according to one even advance oil line of different operating modes, one even returns oil line.

The extension control mode of the overturning oil cylinder comprises the following steps: v1 is connected with an oil inlet pipeline, and V2 is connected with an oil return pipeline. Pressure oil enters from V1, enters a rodless cavity of the overturning oil cylinder from an oil port C1 through a one-way valve of the first balance valve 1, meanwhile, the pressure oil controls the second balance valve 2 to be opened through the first oil way 3, hydraulic oil with a rod cavity of the overturning oil cylinder flows out from V2 through the second balance valve 2 from C2, enters an oil return pipeline, and a piston rod of the overturning oil cylinder stretches out.

The retraction control mode of the overturning oil cylinder comprises the following steps: v2 is connected with an oil inlet pipeline, and V1 is connected with an oil return pipeline. Pressure oil enters from V2, enters a rod cavity of the overturning oil cylinder from an oil port C2 through a one-way valve of the second balance valve 2, meanwhile, the pressure oil controls the first balance valve 1 to be opened through the second oil way 4, hydraulic oil of the rodless cavity of the overturning oil cylinder flows out from V1 through the first balance valve 1 from C1, enters an oil return pipeline and is retracted.

Because the oil supply amount of the hydraulic system is fixed, the cross-sectional area of the rodless cavity of the overturning oil cylinder is larger than that of the rod cavity, and the movement speed of the piston rod of the overturning oil cylinder is equal to the ratio of the oil supply amount to the cross-sectional area of the oil inlet cavity, the extension speed of the piston rod of the overturning oil cylinder is slower than the retraction speed, so that the time for the overturning arm to overturn back to the initial position in an idle state is longer than the working time of an overturning product, and the resetting time is excessively occupied in the whole working time.

Disclosure of Invention

Aiming at the defects that the existing turning arm is longer in idle turning back to an initial position than the working time of a turning product, and the reset time is too much in the whole working time, so that the working efficiency of equipment is low, the utility model provides the turning arm oil cylinder control valve group capable of greatly shortening the reset time of the turning arm and improving the working efficiency of the turning arm.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a upset arm hydro-cylinder control valves, includes first balanced valve, second balanced valve, first oil circuit, second oil circuit, upset hydro-cylinder and hydraulic fluid port V1, V2, C1, C2, hydraulic fluid port V1 and hydraulic fluid port V2 are according to one of different operating modes and are connected into oil line, and one is connected back oil line, hydraulic fluid port V1 is through first balanced valve, hydraulic fluid port C1 intercommunication the rodless chamber of upset hydro-cylinder, hydraulic fluid port V2 is through second balanced valve, hydraulic fluid port C2 intercommunication the pole chamber of upset hydro-cylinder, hydraulic fluid port V1 is through first oil circuit connection the control end of second balanced valve, hydraulic fluid port V2 is through second oil circuit connection the control end of first balanced valve, just install first ooff valve on the first oil circuit, hydraulic fluid port C1 is through third oil circuit intercommunication hydraulic fluid port C2, just install the second ooff valve on the third oil circuit.

According to the utility model, on the premise of not changing an original turning arm oil cylinder hydraulic system, the first switching valve is arranged on the first oil way, the oil port C1 is communicated with the oil port C2 through the third oil way, and the second switching valve is arranged on the third oil way, so that when the rodless cavity of the turning oil cylinder is filled with oil, the first oil way is cut off through the first switching valve, the oil way from the oil port C2 to the oil port V2 is cut off by the second balance valve, meanwhile, the second switching valve is communicated with the third oil way, so that hydraulic oil from a rod cavity in the extending process of a piston rod of the turning oil cylinder can only enter the rod cavity of the turning oil cylinder through the third oil way, the oil inlet amount of the rod cavity of the turning oil cylinder is increased, the rapid extending motion of the piston rod of the turning oil cylinder is realized, the resetting time of the turning arm is greatly shortened, and the working efficiency of the turning arm is improved.

Preferably, the first switch valve and the second switch valve are respectively normally closed electromagnetic valves.

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

1. according to the utility model, on the premise of not changing an original turning arm oil cylinder hydraulic system, the first switching valve is arranged on the first oil way, the oil port C1 is communicated with the oil port C2 through the third oil way, and the second switching valve is arranged on the third oil way, so that the extending running speed of a piston rod of the turning oil cylinder can be improved, the resetting time of the turning arm is shortened, and the turning working efficiency is improved;

2. the differential control valve group of the utility model only adds differential function on the basis of the original control valve group, and still retains the original control mode, so that various turnover reset speed selections can be provided according to the needs.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the operating state of the invert arm.

Fig. 2 is a schematic diagram of a prior art control valve block for a invert arm cylinder.

Fig. 3 is a schematic diagram of a control valve block for a invert arm cylinder in accordance with the present utility model.

Detailed Description

The utility model is further described below in connection with specific preferred embodiments, but it is not intended to limit the scope of the utility model.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described according to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

Referring to fig. 3, an embodiment of a control valve set for a turning arm cylinder of the present utility model includes a first balance valve 1, a second balance valve 2, a first oil path 3, a second oil path 4, a turning cylinder 5, and oil ports V1, V2, C1, C2, wherein the oil port V1 and the oil port V2 are connected to an oil inlet pipeline according to different working conditions, one is connected to an oil return pipeline, the oil port V1 is communicated with a rodless cavity of the turning cylinder 5 through the first balance valve 1 and the oil port C1, the oil port V2 is communicated with a rod cavity of the turning cylinder 5 through the second balance valve 2 and the oil port C2, meanwhile, the oil port V1 is connected to a control end of the second balance valve 2 through the first oil path 3, the oil port V2 is connected to a control end of the first balance valve 1 through the second oil path 4, a first switch valve 6 is installed on the first oil path 3, the oil port C1 is communicated with the oil port C2 through a third oil path 8, and a second switch valve 7 is installed on the third oil path 8.

The first switching valve 6 and the second switching valve 7 are preferably normally closed solenoid valves.

Obviously, on the basis of the existing turning arm oil cylinder control valve group, the first switching valve 6 is added on the first oil way 3, and the third oil way 8 and the second switching valve 7 are added between the oil ports C1 and C2, so that differential control on extension and retraction of a turning oil cylinder piston rod is realized.

The extension control mode of the piston rod of the overturning oil cylinder comprises the following steps: v1 is connected with an oil inlet pipeline, and V2 is connected with an oil return pipeline. Pressure oil enters from V1, enters a rodless cavity of the overturning oil cylinder from a C1 oil port through a one-way valve of the first balance valve 1, and meanwhile, the first switch valve 6 is electrified, the first oil way 3 is cut off, the second balance valve 2 cannot be opened, namely, the oil way from C2 to V2 is cut off by the second balance valve 2; the second electromagnetic valve 7 is electrified, the third oil way 8 is communicated, hydraulic oil from a rod cavity in the extending process of a piston rod of the overturning oil cylinder can only enter the rod cavity of the overturning oil cylinder through the third oil way 8, the oil inlet quantity of the rod cavity of the overturning oil cylinder is increased, the piston rod of the overturning oil cylinder is enabled to extend out quickly, and the overturning arm is restored to the initial position quickly.

The retraction control mode of the piston rod of the overturning oil cylinder comprises the following steps: v2 is connected with an oil inlet pipeline, and V1 is connected with an oil return pipeline. Pressure oil enters from V2, enters a rod cavity of the turnover oil cylinder from a C2 oil port through a one-way valve of the second balance valve 2, meanwhile, the first switch valve 6 and the second switch valve 7 are powered off, the first oil way 3 and the third oil way 8 are cut off, the pressure oil entering from V2 controls the first balance valve 1 to be opened through the second oil way 4, namely, the oil ways from C1 to V1 are communicated, hydraulic oil from the rod cavity is returned to an oil return pipeline in the process of retracting a piston rod of the turnover oil cylinder, and the turnover arm turns over 90 degrees.

When the first switch valve 6 and the second switch valve 7 are not electrified, the control mode of the overturning oil cylinder is the same as that of the control valve group in the prior art.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims (2)

1. The utility model provides a upset arm hydro-cylinder control valves, includes first balanced valve (1), second balanced valve (2), first oil circuit (3), second oil circuit (4), upset hydro-cylinder (5) and hydraulic fluid port V1, V2, C1, C2, hydraulic fluid port V1 and hydraulic fluid port V2 are according to different operating modes one be connected into oil line, and one is connected to return oil line, hydraulic fluid port V1 is through first balanced valve, hydraulic fluid port C1 intercommunication the rodless chamber of upset hydro-cylinder, hydraulic fluid port V2 is through second balanced valve, hydraulic fluid port C2 intercommunication the pole cavity of upset hydro-cylinder, simultaneously hydraulic fluid port V1 is through first oil circuit is connected the control end of second balanced hydro-cylinder, hydraulic fluid port V2 is through second oil circuit is connected the control end of first balanced valve, its characterized in that: the first oil way is provided with a first switch valve (6), the oil port C1 is communicated with the oil port C2 through a third oil way (8), and the third oil way is provided with a second switch valve (7).

2. The invert arm cylinder control valve bank of claim 1 wherein the first switch valve and the second switch valve are each normally closed solenoid valves.