Synchronous lifting hydraulic valve group for AGV (Automatic Guided Vehicle)

Abstract

The utility model relates to the technical field of hydraulic valve banks, in particular to a synchronous lifting hydraulic valve bank for an AGV. The device comprises a valve block, a reversing valve is installed on the valve block, one end of the reversing valve is connected with a high-pressure oil filter, the other end of the high-pressure oil filter is connected to an external oil supply device, and the other two ends of the reversing valve are connected to the input end of a diverter valve arranged on one side of the valve block and an external oil return way respectively. A plurality of outlets of the diverter valve are connected to a plurality of third oil ways formed in the valve block, and a balancing structure is arranged between every two adjacent third oil ways; according to the device, through installation of the shuttle valves, when a plurality of unit structures are driven to operate, pressure balance among the unit structures can be kept, and device asynchronism caused by pressure difference is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valve groups, in particular to a synchronous lifting hydraulic valve group for AGV. Background Art

[0002] Automated Guided Vehicles (AGV) are autonomous mobile mechanical devices that are widely used in industry and logistics to automate tasks such as material handling, loading and unloading, and warehousing. During operation, the lifting system is a key part used to lift or lower the goods or workpieces being carried.

[0003] However, due to factors such as changes in lifting weight requirements and speed requirements, multiple lifting units need to work together synchronously in some specific situations. However, due to different oil flow distances and blockage by debris in the hydraulic control system, it is easy for multiple units to fail to synchronize in actual use, resulting in certain dangers during the lifting process. Utility Model Content

[0004] The purpose of the utility model is to provide a reasonably designed synchronous lifting hydraulic valve group for AGV in view of the defects and shortcomings of the prior art, which can solve the above-mentioned defects.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a valve block, on which a reversing valve is installed, one end of the reversing valve is connected to a high-pressure oil filter, one end of the high-pressure oil filter is connected to an external oil supply device, the other two ends of the reversing valve are respectively connected to an input end of a diverter valve arranged on one side of the valve block and an external oil return circuit, several outlets of the diverter valve are connected to several oil circuits three opened in the valve block, and a balancing structure is provided between adjacent oil circuits three.

[0006] Preferably, the balancing structure comprises a plurality of shuttle valves arranged on the valve block, the two input ends of each shuttle valve are respectively connected to two adjacent oil circuits three, and the output ends of the plurality of shuttle valves are connected to the return oil circuit through connecting pipes.

[0007] Preferably, an oil circuit 2 is provided in the valve block, one end of the reversing valve and a connecting pipe are connected to the oil circuit 2, and an outlet end of the oil circuit 2 is connected to an external oil return circuit.

[0008] Preferably, an oil circuit 1 is provided in the valve block, and two ends of the oil circuit 1 are respectively connected to the reversing valve and the diverter valve.

[0009] Preferably, quick connectors or plugs are detachably installed on the outlet ends of several of the oil circuits three according to usage requirements.

[0010] Preferably, an oil circuit connector is provided at the input end of the high-pressure oil filter.

[0011] After adopting the above structure, the beneficial effects of the utility model are:

[0012] The device can drive a single unit to work independently or multiple units to operate synchronously by installing multiple shuttle valves, and can maintain pressure balance between each other during synchronous driving to prevent the pressure difference from causing the device to be out of sync. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a right rear side view of the utility model;

[0014] Figure 2 It is a left front side view of the utility model;

[0015] Figure 3 It is a rear top view of the internal structure of the valve block in the utility model;

[0016] Figure 4 It is a schematic diagram of the main oil circuit connections in the utility model.

[0017] Description of reference numerals:

[0018] 1. Valve block; 1-1. Oil circuit 1; 1-2. Oil circuit 2; 1-3. Oil circuit 3; 2. High-pressure oil filter; 2-1. Oil circuit connector; 3. Reversing valve; 4. Diverter valve; 5. Shuttle valve; 6. Quick connector; 7. Plug; 8. Connecting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 As shown, it comprises a valve block 1, a reversing valve 3 is installed on the valve block 1, one end of the reversing valve 3 is connected to a high-pressure oil filter 2, one end of the high-pressure oil filter 2 is connected to an external oil supply device, the other two ends of the reversing valve 3 are respectively connected to an input end of a diverter valve 4 arranged on one side of the valve block 1 and an external oil return circuit, several outlets of the diverter valve 4 are connected to several oil circuits 1-3 opened in the valve block 1, and a balancing structure is arranged between adjacent oil circuits 1-3;

[0021] The balancing structure includes several shuttle valves 5 arranged on the valve block 1, the two input ends of each shuttle valve 5 are respectively connected to two adjacent oil circuits 3 1-3, and the output ends of the several shuttle valves 5 are connected to the return oil circuit through the connecting pipe 8;

[0022] The valve block 1 is provided with an oil circuit 2 1 - 2 , one end of the reversing valve 3 and the connecting pipe 8 are connected to the oil circuit 2 1 - 2 , and the outlet end of the oil circuit 2 1 - 2 is connected to an external oil return circuit;

[0023] An oil circuit 1-1 is provided in the valve block 1, and two ends of the oil circuit 1-1 are respectively connected to the reversing valve 3 and the diverter valve 4;

[0024] The outlet ends of several oil circuits 1-3 are detachably mounted with quick connectors 6 or plugs 7 according to usage requirements;

[0025] The input end of the high-pressure oil filter 2 is provided with an oil circuit connector 2 - 1 .

[0026] As an optimization solution of the utility model,

[0027] The principle and use process of this utility model:

[0028] First, connect the oil circuit connector 2-1 to the oil supply device, connect the outlet of the oil circuit 2 1-2 to the oil return circuit, and then install quick connectors 6 or plugs 7 at the outlets of several oil circuits 3 1-3 according to the usage, and connect the quick connectors 6 to the hydraulic movable device;

[0029] During use, the oil supply device feeds oil from the high-pressure oil filter 2, filters impurities in the oil, and then the oil is fed into the reversing valve 3. After coming out, the oil flows into the diverter valve 4 from the oil circuit 1-1. The diverter valve 4 feeds the oil of the specified pressure into the corresponding hydraulic active device through the specified number of oil circuits 3 1-3 according to the setting, thereby providing power for lifting. At the same time, when synchronous operation is required, the shuttle valve 5 can maintain the oil pressure balance between the two adjacent oil circuits 3 1-3, and feed the excess oil in the oil circuit with excessive pressure into the oil circuit 2 1-2 and discharge it, thereby maintaining the oil pressure balance between the multiple oil circuits 3 1-3, so that the pressure between the driven multiple hydraulic active devices is balanced, and the synchronization efficiency is high;

[0030] After use, the oil in the plurality of oil circuits three 1-3 can be discharged by switching the reversing valve 3, and flow back to the oil tank through the oil circuit two 1-2.

[0031] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or within the equivalent forms of such scope and boundaries.

Claims

1. A synchronous lifting hydraulic valve group for AGV, comprising a valve block (1), characterized in that: A reversing valve (3) is installed on the valve block (1), one end of the reversing valve (3) is connected to a high-pressure oil filter (2), the other end of the high-pressure oil filter (2) is connected to an external oil supply device, the other two ends of the reversing valve (3) are respectively connected to an input end of a diverter valve (4) arranged on one side of the valve block (1) and an external oil return circuit, several outlets of the diverter valve (4) are connected to several oil circuits (1-3) opened in the valve block (1), and a balancing structure is provided between adjacent oil circuits (1-3).

2. The synchronous lifting hydraulic valve group for AGV according to claim 1, characterized in that: The balancing structure comprises a plurality of shuttle valves (5) arranged on a valve block (1), wherein two input ends of each shuttle valve (5) are respectively connected to two adjacent oil circuits three (1-3), and output ends of the plurality of shuttle valves (5) are connected to the oil return circuit via a connecting pipe (8).

3. The synchronous lifting hydraulic valve group for AGV according to claim 2 is characterized in that: The valve block (1) is provided with an oil circuit 2 (1-2), one end of the reversing valve (3) and a connecting pipe (8) are connected to the oil circuit 2 (1-2), and the outlet end of the oil circuit 2 (1-2) is connected to an external oil return circuit.

4. The synchronous lifting hydraulic valve group for AGV according to claim 3 is characterized in that: An oil circuit 1 (1-1) is provided in the valve block (1), and two ends of the oil circuit 1 (1-1) are respectively connected to a reversing valve (3) and a diverter valve (4).

5. The synchronous lifting hydraulic valve group for AGV according to claim 4 is characterized in that: The outlet ends of several of the oil circuits three (1-3) are detachably mounted with quick connectors (6) or plugs (7) according to usage requirements.

6. The synchronous lifting hydraulic valve group for AGV according to claim 5, characterized in that: An oil circuit connector (2-1) is provided at the input end of the high-pressure oil filter (2).

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