CN214170986U - Unloading valve group - Google Patents

Abstract

The utility model discloses an off-load valves for the crane contains: a valve block; the first oil inlet and the oil return opening are respectively arranged on the side surface of the valve block, the first oil inlet is connected with pressure oil, and the oil return opening is connected with an oil tank; the first overflow valve is connected between the first oil inlet and the oil return port; the second oil inlet is formed in the side face of the valve block and connected with pressure oil; the electromagnetic valve and the second overflow valve are connected between the second oil inlet and the oil return port after being connected in series, the electromagnetic valve is connected with the second oil inlet, and the second overflow valve is connected with the oil return port. The utility model realizes the switching of different pressures by the reversing of the electromagnetic valve, thereby realizing the selection of different pressures; meanwhile, the processing is easier, the processing time is shorter, the efficiency is improved, and the cost is saved.

Description

Unloading valve group

Technical Field

The utility model relates to a truck-mounted crane unloading valve technical field, in particular to off-load valves.

Background

A truck-mounted crane (crane truck), which is a device for lifting, revolving and hoisting goods by a hydraulic lifting and telescoping system, is generally assembled on a truck and generally comprises a truck chassis, a truck compartment, a power takeoff, a crane and the like. The truck-mounted crane is widely applied to various loading, engineering construction, rescue and other scenes, however, in the prior art, the unloading valve bank of the truck-mounted crane is mainly controlled by two multipurpose valve banks respectively, so that the size is large, the weight is heavy, the connected pipelines are increased, the layout is inconvenient, the material cost is increased, great inconvenience is brought to transportation and installation, the application range and the loading of the truck-mounted crane and a transport vehicle are greatly limited, the appearance is attractive, the product image manufactured in China is not favorably improved, the export and the earning are more favorably realized, and the economic benefit is greatly influenced.

SUMMERY OF THE UTILITY MODEL

According to the embodiment of the utility model provides an off-load valves for the crane contains:

a valve block;

the first oil inlet and the oil return opening are respectively arranged on the side surface of the valve block, the first oil inlet is connected with pressure oil, and the oil return opening is connected with an oil tank;

the first overflow valve is arranged on the side face of the valve block and is connected between the first oil inlet and the oil return port;

the second oil inlet is formed in the side face of the valve block and connected with pressure oil;

the electromagnetic valve and the second overflow valve are arranged on the side face of the valve block, the electromagnetic valve and the second overflow valve are connected between the second oil inlet and the oil return port after being connected in series, the electromagnetic valve is connected with the second oil inlet, and the second overflow valve is connected with the oil return port.

Further, the valve block is a cuboid, and the upper surface of the valve block is provided with a mounting hole for fixing the valve block.

Further, the first oil inlet and the oil return port are arranged on the same side face of the valve block.

Furthermore, the second oil inlet is arranged opposite to the side face where the first oil inlet is arranged.

Further, the first relief valve and the second relief valve have different set pressures.

Further, the first overflow valve and the second overflow valve are respectively plug-in type overflow valves.

Furthermore, the solenoid valve is a plug-in type solenoid valve.

Further, the electromagnetic valve and the second overflow valve are arranged on the same side face of the valve block.

Further, the first overflow valve is arranged opposite to the side face where the second overflow valve is arranged.

According to the unloading valve group provided by the embodiment of the utility model, the switching of different pressures is realized by the reversing of the electromagnetic valve, so that the selection of different pressures is realized; meanwhile, the processing is easier, the processing time is shorter, the efficiency is improved, and the cost is saved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology.

Drawings

Fig. 1 is a top view of an unloader valve assembly according to an embodiment of the present invention;

fig. 2 is one of side views of an unloader valve assembly according to an embodiment of the present invention;

fig. 3 is a second side view of an unloading valve set according to an embodiment of the present invention;

fig. 4 is a pipeline schematic diagram of an unloading valve group according to the embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.

First, the unloading valve set according to the embodiment of the present invention will be described with reference to fig. 1 to 4, which is used for engineering machinery such as cranes and the like, and has a wide application range.

As shown in fig. 1-4, the utility model discloses unloading valves of embodiment has valve block 1, first oil inlet P, oil return T, first overflow valve 2, second oil inlet P1, solenoid valve 3 and second overflow valve 4.

Specifically, as shown in fig. 1 to 3, the valve block 1 is a rectangular parallelepiped, and the upper surface of the valve block 1 is provided with a mounting hole 11 for fixing the valve block 1. In this embodiment, the valve block 1 is made of nodular cast iron, so that the strength is ensured, the material is easier to process, the processing time is shorter, the efficiency is improved, and the cost is saved.

Specifically, as shown in fig. 2 and 4, a first oil inlet P and an oil return port T are respectively disposed on the side surface of the valve block 1, the first oil inlet P is connected with pressure oil, and the oil return port T is connected with an oil tank. In this embodiment, the first oil inlet P and the oil return port T are disposed on the same side of the valve block 1, so that the structure is compact and the size is reduced.

Specifically, as shown in fig. 2 and 4, the first relief valve 2 is disposed on a side surface of the valve block 1, and the first relief valve 2 is connected between the first oil inlet P and the oil return T.

Specifically, as shown in fig. 3 and 4, the second oil inlet P1 is provided on the side surface of the valve block 1 to which pressure oil is connected. In this embodiment, the second oil inlet P1 is disposed opposite to the side where the first oil inlet P is located, so that the structure is compact and the volume is reduced.

Specifically, as shown in fig. 1 to 4, the electromagnetic valve 3 and the second overflow valve 4 are disposed on the side surface of the valve block 1, the electromagnetic valve 3 and the second overflow valve 4 are connected in series and then connected between the second oil inlet P1 and the oil return port T, the electromagnetic valve 3 is connected with the second oil inlet P1, and the second overflow valve 4 is connected with the oil return port T. In this embodiment, the set pressures of the first overflow valve 2 and the second overflow valve 4 are different, so that the switching of different pressures can be realized by reversing the electromagnetic valve 3, and the selection of different pressures can be realized.

Further, in this embodiment, the first overflow valve 2 and the second overflow valve 4 are respectively a cartridge type overflow valve, and the solenoid valve 3 is a cartridge type solenoid valve 3, so as to realize a compact structure.

Further, as shown in fig. 1, in this embodiment, the electromagnetic valve 3 and the second overflow valve 4 are disposed on the same side of the valve block 1, and the first overflow valve 2 is disposed opposite to the side where the second overflow valve 4 is disposed, so as to further ensure the compactness of the structure and reduce the volume.

The second overflow valve 4 is taken as an overflow valve with low set pressure for illustration, when the electromagnetic valve 3 is not electrified during operation, the first overflow valve 2 and the second overflow valve 4 are simultaneously electrified with pressure oil, because the set pressures of the first overflow valve 2 and the second overflow valve 4 are different, the oil preferentially overflows from the second overflow valve 4, the system pressure is the pressure set by the second overflow valve 4 with lower set pressure, when the electromagnetic valve 3 is electrified, the electromagnetic valve 3 realizes reversing, the oil inlet of the second oil inlet P1 is cut off, the second overflow valve 4 is not communicated with the system pressure oil any more, the pressure oil can only overflow through the first overflow valve 2 with higher set pressure at the moment, the system pressure is the pressure set by the first overflow valve 2 at the moment, and the pressure switching is realized through the electrification and the power loss of the electromagnetic valve 3.

In the above, with reference to fig. 1 to 4, the unloading valve group according to the embodiment of the present invention is described, and the switching of different pressures is realized by reversing the electromagnetic valve 3, so as to realize the selection of different pressures; meanwhile, the processing is easier, the processing time is shorter, the efficiency is improved, and the cost is saved.

It should be noted that, in the present specification, 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. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims (9)

1. An unloader valve assembly for use with a crane, comprising:

a valve block;

the first oil inlet and the oil return opening are respectively arranged on the side surface of the valve block, the first oil inlet is connected with pressure oil, and the oil return opening is connected with an oil tank;

the first overflow valve is arranged on the side surface of the valve block and is connected between the first oil inlet and the oil return port;

the second oil inlet is formed in the side face of the valve block and connected with pressure oil;

the electromagnetic valve and the second overflow valve are arranged on the side face of the valve block, the electromagnetic valve and the second overflow valve are connected in series and then connected between the second oil inlet and the oil return port, the electromagnetic valve is connected with the second oil inlet, and the second overflow valve is connected with the oil return port.

2. The unloader valve assembly of claim 1, wherein the valve block is a rectangular parallelepiped, and the upper surface of the valve block is provided with a mounting hole for fixing the valve block.

3. The unloader valve assembly of claim 1, wherein the first oil inlet and the oil return are disposed on a same side of the valve block.

4. The unloader valve assembly of claim 3, wherein the second oil inlet is disposed opposite the side on which the first oil inlet is disposed.

5. The unloader valve assembly of claim 1, wherein the first relief valve and the second relief valve have different set pressures.

6. The unloader valve assembly according to claim 1 or 5, wherein the first and second relief valves are cartridge relief valves, respectively.

7. The unloader valve stack of claim 1, wherein the solenoid valve is a cartridge solenoid valve.

8. The unloader valve block of claim 1, wherein the solenoid valve and the second relief valve are disposed on a same side of the valve block.

9. The unloader valve assembly of claim 8, wherein the first relief valve is disposed opposite the side of the second relief valve.

Images