阅读说明：本技术 一种用于仓储物流穿梭车的液压控制系统及穿梭车 (Hydraulic control system for warehouse logistics shuttle and shuttle ) 是由 欧阳庆生 左晓芳 于 2021-10-15 设计创作，主要内容包括：本发明涉及一种用于仓储物流穿梭车的液压控制系统及穿梭车,包括：动力模块；执行模块,所述执行模块包括第一液压缸组和第二液压缸组；所述第一液压缸组包括彼此并联连接的第一液压缸小组和第二液压缸小组,所述第二液压缸组包括彼此并联连接的第三液压缸小组和第四液压缸小组；控制模块,所述控制模块包括一个主控制阀和四个次控制阀,主控制阀连接动力模块和次控制阀,次控制阀连接执行模块。本发明可以实现油缸同步运动,控制逻辑清晰、简单,组成元件少、成本低。(The invention relates to a hydraulic control system for a warehouse logistics shuttle car and the shuttle car, comprising: a power module; an execution module comprising a first hydraulic cylinder group and a second hydraulic cylinder group; the first hydraulic cylinder group comprises a first hydraulic cylinder small group and a second hydraulic cylinder small group which are connected in parallel, and the second hydraulic cylinder group comprises a third hydraulic cylinder small group and a fourth hydraulic cylinder small group which are connected in parallel; and the control module comprises a main control valve and four secondary control valves, the main control valve is connected with the power module and the secondary control valves, and the secondary control valves are connected with the execution module. The invention can realize the synchronous movement of the oil cylinders, has clear and simple control logic, few constituent elements and low cost.)

1. A hydraulic control system for a warehouse logistics shuttle vehicle, comprising:

the power module comprises a motor, an oil tank and an oil pump driven by the motor, and a one-way valve is arranged on an output pipeline of the oil pump;

an execution module comprising a first hydraulic cylinder group and a second hydraulic cylinder group; the first hydraulic cylinder group comprises a first hydraulic cylinder group and a second hydraulic cylinder group which are connected in parallel, the first hydraulic cylinder group is formed by connecting a plurality of hydraulic cylinders which synchronously run in series, and the second hydraulic cylinder group is formed by connecting a plurality of hydraulic cylinders which synchronously run in series; the second hydraulic cylinder group comprises a third hydraulic cylinder group and a fourth hydraulic cylinder group which are connected in parallel, the third hydraulic cylinder group is connected in series by a plurality of hydraulic cylinders which synchronously run, and the fourth hydraulic cylinder group is connected in series by a plurality of hydraulic cylinders which synchronously run;

and the control module comprises a main control valve and four secondary control valves, the main control valve is connected with the power module and the secondary control valves, and the secondary control valves are connected with the execution module.

2. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: and a first overflow valve used for adjusting the pressure of the hydraulic control system is also arranged in the power module, and the first overflow valve is arranged behind the one-way valve and is connected with the oil tank.

3. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: in the first hydraulic cylinder group and the second hydraulic cylinder group, except the first cylinder and the last cylinder, each of the other hydraulic cylinders is connected with an overflow valve in parallel.

4. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: the head end and the tail end of the first hydraulic cylinder group are respectively connected with one end of a first secondary control valve and one end of a third secondary control valve, and the head end and the tail end of the second hydraulic cylinder group are respectively connected with one end of a second secondary control valve and one end of a fourth control valve; the other ends of the first control valve and the second control valve are connected with a first output port of the main control valve, the other ends of the third control valve and the fourth control valve are connected with a second output port of the main control valve, an oil supply port of the main control valve is connected with an oil tank of the power module through a one-way valve, and an oil return port is connected with an oil return tank of the power module.

5. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: and each hydraulic cylinder in the first hydraulic cylinder group and the second hydraulic cylinder group is a hydraulic cylinder with the same specification.

6. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: and the upper part of the oil tank is provided with a breather valve used for discharging air in the hydraulic system.

7. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: the main control valve adopts a three-position four-way reversing valve.

8. The hydraulic control system for a warehouse logistics shuttle of claim 1, wherein: the secondary control valve adopts an electromagnetic directional valve.

9. The utility model provides a be used for storage commodity circulation shuttle which characterized in that: the shuttle car employs a hydraulic system as claimed in any one of claims 1 to 8.

Technical Field

The invention belongs to the technical field of storage logistics shuttle vehicles, and particularly relates to a hydraulic control system for a storage logistics shuttle vehicle and the shuttle vehicle.

Background

At present, a plurality of hydraulic system principles are applied to the warehouse logistics shuttle vehicle, and the synchronization of a hydraulic oil cylinder can be achieved. In the prior art, the shuttle vehicle hydraulic control system has a plurality of realization forms, the basic form of the shuttle vehicle hydraulic control system can be divided into an open-loop control mode and a closed-loop control mode, and the open-loop control mode basically controls the synchronization of the execution elements by the self-precision of the hydraulic control elements such as a synchronous valve, a throttle valve or a speed regulating valve. Generally, a hydraulic synchronization system adopting an open-loop control mode has a simple structure and low cost, but errors caused by different loads, manufacturing accuracy difference of oil cylinders, leakage of hydraulic oil and the like cannot be eliminated.

In addition, the synchronous hydraulic system can be divided into two types of pump control synchronous control and valve control synchronous control. In the former, a plurality of pumps respectively input the same flow to each oil cylinder, and the output flow of the pumps is controlled by changing the discharge capacity of the pumps, so that the movement speed of an actuating element is adjusted, the pump control system has high efficiency and low energy loss, but the dynamic characteristic of the pump control system is relatively poor and the control precision is not high due to low response speed of the pumps.

At present, no good method is available at home and abroad to improve the synchronization precision, most error loops are corrected to avoid accumulated errors formed by multiple reciprocating motions, but the method only starts from the quality of system elements or the structure of an oil way, so that the stability is not high, and the efficiency is lower.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a hydraulic control system for a warehouse logistics shuttle car and the shuttle car, which can realize synchronous movement of oil cylinders, have clear and simple control logic, few components and low cost.

In order to solve the technical problems, the invention adopts a technical scheme that: the hydraulic control system for the warehouse logistics shuttle vehicle comprises:

the power module comprises a motor, an oil tank and an oil pump driven by the motor, and a one-way valve is arranged on an output pipeline of the oil pump;

an execution module comprising a first hydraulic cylinder group and a second hydraulic cylinder group; the first hydraulic cylinder group comprises a first hydraulic cylinder group and a second hydraulic cylinder group which are connected in parallel, the first hydraulic cylinder group is formed by connecting a plurality of hydraulic cylinders which synchronously run in series, and the second hydraulic cylinder group is formed by connecting a plurality of hydraulic cylinders which synchronously run in series; the second hydraulic cylinder group comprises a third hydraulic cylinder group and a fourth hydraulic cylinder group which are connected in parallel, the third hydraulic cylinder group is connected in series by a plurality of hydraulic cylinders which synchronously run, and the fourth hydraulic cylinder group is connected in series by a plurality of hydraulic cylinders which synchronously run;

and the control module comprises a main control valve and four secondary control valves, the main control valve is connected with the power module and the secondary control valves, and the secondary control valves are connected with the execution module.

Further, a first overflow valve used for adjusting the pressure of the hydraulic control system is further arranged in the power module, and the first overflow valve is arranged behind the one-way valve and connected with the oil tank.

Furthermore, in the first hydraulic cylinder group and the second hydraulic cylinder group, except the first cylinder and the last cylinder, each of the other hydraulic cylinders is connected with an overflow valve in parallel.

Further, the head end and the tail end of the first hydraulic cylinder group are respectively connected with one end of a first secondary control valve and one end of a third secondary control valve, and the head end and the tail end of the second hydraulic cylinder group are respectively connected with one end of a second secondary control valve and one end of a fourth control valve; the other ends of the first control valve and the second control valve are connected with a first output port of the main control valve, the other ends of the third control valve and the fourth control valve are connected with a second output port of the main control valve, an oil supply port of the main control valve is connected with an oil tank of the power module through a one-way valve, and an oil return port is connected with an oil return tank of the power module.

Further, each hydraulic cylinder in the first hydraulic cylinder group and the second hydraulic cylinder group is a hydraulic cylinder with the same specification.

Further, a breather valve for discharging air in the hydraulic system is provided at an upper portion of the oil tank.

Furthermore, the main control valve adopts a three-position four-way reversing valve.

Further, the secondary control valve adopts an electromagnetic directional valve.

The invention also provides a shuttle vehicle for warehouse logistics, which adopts the hydraulic system.

The advantages of the invention are as follows:

the invention can realize the synchronous movement of the oil cylinders, has clear and simple control logic, few constituent elements and low cost.

Drawings

Fig. 1 is a schematic diagram of a hydraulic control system for a warehouse logistics shuttle.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be embodied in other specific forms than those described herein, and it will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention.

As shown in fig. 1, the hydraulic control system for a warehouse logistics shuttle of the present invention comprises:

the power module comprises a motor, an oil tank and an oil pump driven by the motor, and a one-way valve is arranged on an output pipeline of the oil pump; the power module is also internally provided with a first overflow valve RV for adjusting the pressure of the hydraulic control system, and the first overflow valve RV is arranged behind the one-way valve and is connected with the oil tank to limit the upper pressure limit of the system;

an execution module comprising a first hydraulic cylinder group and a second hydraulic cylinder group; the first hydraulic cylinder group comprises a first hydraulic cylinder group and a second hydraulic cylinder group which are connected in parallel, the first hydraulic cylinder group is connected in series by a plurality of hydraulic cylinders W1, W2 and W3 which run synchronously, and the second hydraulic cylinder group is connected in series by a plurality of hydraulic cylinders W4, W5 and W6 which run synchronously; the second hydraulic cylinder group comprises a third hydraulic cylinder subgroup and a fourth hydraulic cylinder subgroup which are connected in parallel with each other, the third hydraulic cylinder subgroup is connected in series by a plurality of synchronously operated hydraulic cylinders W7, W8 and W9, and the fourth hydraulic cylinder subgroup is connected in series by a plurality of synchronously operated hydraulic cylinders W10, W11 and W12; in the first hydraulic cylinder group and the second hydraulic cylinder group, except the first cylinder and the last cylinder, each of the other hydraulic cylinders is connected with an overflow valve RV2 in parallel;

the control module comprises a main control valve SV5 and four secondary control valves SV1, SV2, SV3 and SV4, the main control valve SV5 adopts a three-position four-way reversing valve, the secondary control valves SV1, SV2, SV3 and SV4 adopt electromagnetic reversing valves, and the main control valve and the secondary control valves are mutually matched to control the reversing of two groups of hydraulic cylinder groups and maintain pressure in the system.

The head end and the tail end of the first hydraulic cylinder group are respectively connected with one end of a first secondary control valve SV1 and one end of a third secondary control valve SV3, and the head end and the tail end of the second hydraulic cylinder group are respectively connected with one end of a second secondary control valve SV2 and one end of a fourth control valve SV 4; the other end of first time control valve SV1 and second time control valve SV2 is connected with the first delivery outlet of main control valve SV5, and the other end of third time control valve SV3 and fourth time control valve SV4 is connected with the second delivery outlet of main control valve SV5, and main control valve SV 5's oil feed port passes through the check valve with the oil tank of power module and is connected, and the oil return port is connected with the oil return tank of power module. The three-position four-way reversing valve serving as the main control valve SV5 is configured to have three working positions, which correspond to three states of extension, retraction and stop of the hydraulic cylinders in the first hydraulic cylinder group and the second hydraulic cylinder group.

And each hydraulic cylinder in the first hydraulic cylinder group and the second hydraulic cylinder group is a hydraulic cylinder with the same specification.

And the upper part of the oil tank is provided with a breather valve used for discharging air in the hydraulic system.

The hydraulic control system for the warehouse logistics shuttle car and the shuttle car provided by the application are introduced in detail, specific examples are applied in the description to explain the principle and the implementation of the application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.