阅读说明：本技术 一种节能的液压振捣棒调速液压回路 (Energy-saving hydraulic vibrating rod speed regulation hydraulic circuit ) 是由 陈立文 张超硕 周哲 于 2019-11-13 设计创作，主要内容包括：一种节能的液压振捣棒调速液压回路,涉及液压技术领域,包括进油管路和回油管路,还包括溢流阀、液控逻辑阀、压力补偿型节流阀,预设数量的比例型流量控制阀以及与比例型流量控制阀一一对应的单向阀,所述溢流阀的一端与进油管路连接,所述单向阀的进油口与与之对应的比例型流量控制阀的出油端连接,每个比例型流量控制阀的进油端与进油管路连接,所述压力补偿型节流阀的进油口与所述液控逻辑阀的先导压力油口端连接,所述压力补偿型节流阀的出油口与回油管路连接,能够调节液压振捣棒转速,使振捣棒液压马达转速较为稳定,同时能够减小系统功率消耗,较为节能。(An energy-saving hydraulic circuit for regulating speed of a hydraulic vibrating rod relates to the technical field of hydraulic pressure, and comprises an oil inlet pipeline, an oil return pipeline, an overflow valve, a hydraulic control logic valve, a pressure compensation type throttle valve, a preset number of proportional type flow control valves and one-way valves corresponding to the proportional type flow control valves one by one, one end of the overflow valve is connected with an oil inlet pipeline, the oil inlet of the one-way valve is connected with the oil outlet end of the proportional flow control valve corresponding to the one-way valve, the oil inlet end of each proportional flow control valve is connected with the oil inlet pipeline, an oil inlet of the pressure compensation type throttling valve is connected with a pilot pressure oil port end of the hydraulic control logic valve, the oil outlet of the pressure compensation type throttling valve is connected with an oil return pipeline, the rotating speed of the hydraulic vibrating rod can be adjusted, the rotating speed of a hydraulic motor of the vibrating rod is stable, meanwhile, the power consumption of a system can be reduced, and the energy is saved.)

1. An energy-saving hydraulic vibrating rod speed-regulating hydraulic circuit comprises an oil inlet pipeline and an oil return pipeline, and is characterized by further comprising an overflow valve (3), hydraulic control logic valves (4), a pressure compensation type throttle valve (6), a preset number of proportional flow control valves (5) and check valves (7) corresponding to the proportional flow control valves (5) one by one, wherein one end of the overflow valve (3) is connected with the oil inlet pipeline, the other end of the overflow valve (3) is connected with the oil return pipeline, an oil inlet of the hydraulic control logic valves (4) is connected with the oil inlet pipeline, an oil outlet of the hydraulic control logic valves (4) is connected with the oil return pipeline, a pilot pressure oil port of the hydraulic control logic valves (4) is connected with an oil outlet end of each check valve (7), an oil inlet of each check valve (7) is connected with an oil outlet end of the corresponding proportional flow control valve (5), the oil inlet end of each proportional flow control valve (5) is connected with an oil inlet pipeline, the oil inlet of each pressure compensation type throttling valve (6) is connected with the pilot pressure oil port end of the hydraulic control logic valve (4), and the oil outlet of each pressure compensation type throttling valve (6) is connected with an oil return pipeline.

2. The energy-saving hydraulic vibrating rod speed-regulating hydraulic circuit according to claim 1, characterized by further comprising a hydraulic pump (2), wherein an oil inlet of the hydraulic pump (2) is connected with an oil inlet pipeline, and an oil outlet of the hydraulic pump (2) is respectively connected with an overflow valve (3), a hydraulic control logic valve (4) and an oil inlet of each proportional flow control valve (5).

3. An energy-saving hydraulic vibrating rod speed-regulating hydraulic circuit as claimed in claim 1 or 2, characterized in that the number of the proportional flow control valves (5) and the number of the check valves (7) are both 1.

4. An energy-saving hydraulic circuit for regulating the speed of a hydraulic vibrating rod according to claim 1 or 2, characterized in that the number of the proportional flow control valves (5) and the number of the check valves (7) are not less than 1.

5. The energy-saving hydraulic vibrating rod speed-regulating hydraulic circuit according to claim 1 or 2, characterized by further comprising a hydraulic oil tank (1), wherein the oil return pipeline is connected with an oil return port of the hydraulic oil tank (1), and the oil inlet pipeline is connected with an oil outlet of the hydraulic oil tank (1).

6. The energy-saving hydraulic vibrating rod speed-regulating hydraulic circuit as claimed in claim 1, characterized in that the pilot-controlled logic valve (4) is used for keeping the system pressure at the magnitude of the load pressure after the load is connected and the spring pre-tightening pressure of the pilot-controlled logic valve (4) all the time, and enabling the surplus oil to return to the hydraulic oil tank from the oil outlet of the pilot-controlled logic valve (4).

The technical field is as follows:

the invention relates to the technical field of hydraulic pressure, in particular to an energy-saving hydraulic circuit for regulating the speed of a hydraulic vibrating rod.

Background art:

the hydraulic vibrating rod is one kind of construction machine for concrete construction, and has small concrete slump required vibration frequency and great concrete slump required vibration frequency, and the vibration frequency of the vibrating rod is determined by the rotation speed of the hydraulic motor inside the vibrating rod, so that the rotation speed of the hydraulic motor inside the vibrating rod may be regulated to obtain optimal vibrating effect.

At present, install the choke valve additional before the actuating motor mostly adopting hydraulic vibrating rod in the existing market and adjust the motor rotational speed, hydraulic motor rotational speed is unstable, and the unnecessary fluid of hydraulic pump export can be followed the overflow valve and is located the overflow, because the overflow pressure that the overflow valve set for is high, can lead to the system power consumption serious after the overflow, and unnecessary energy conversion leads to the system to heat up, easily influences system operational reliability.

As described above, when concretes with different slump are compacted by vibration, the required optimal vibration frequency is different, the conventional hydraulic vibrating rod speed regulating circuit cannot ensure the stable optimal vibration frequency, the optimal vibration effect is obtained, and the energy consumption of the conventional hydraulic vibrating rod speed regulating circuit is serious.

Therefore, how to overcome the above-mentioned drawbacks has become an important issue to be solved by those skilled in the art.

The invention content is as follows:

in order to solve the technical problems, the invention provides an energy-saving hydraulic vibrating rod speed regulation hydraulic circuit which can regulate the rotating speed of a hydraulic vibrating rod, so that the rotating speed of a hydraulic motor of the vibrating rod is stable, the power consumption of a system can be reduced, and the energy is saved.

The invention is realized by the following technical scheme:

an energy-saving hydraulic vibrating rod speed-regulating hydraulic circuit comprises an oil inlet pipeline and an oil return pipeline, and is characterized by further comprising an overflow valve, a hydraulic control logic valve, a pressure compensation type throttle valve, a preset number of proportional type flow control valves and check valves corresponding to the proportional type flow control valves one by one, wherein one end of the overflow valve is connected with the oil inlet pipeline, the other end of the overflow valve is connected with the oil return pipeline, an oil inlet of the hydraulic control logic valve is connected with the oil inlet pipeline, an oil outlet of the hydraulic control logic valve is connected with the oil return pipeline, a pilot pressure oil port of the hydraulic control logic valve is connected with an oil outlet end of each check valve, an oil inlet of each check valve is connected with an oil outlet end of the corresponding proportional type flow control valve, an oil inlet of each proportional type flow control valve is connected with the oil inlet pipeline, an oil inlet of the pressure compensation type throttle valve is connected with a, and an oil outlet of the pressure compensation type throttling valve is connected with an oil return pipeline.

In another aspect of the invention, the hydraulic pump is further included, an oil inlet of the hydraulic pump is connected with the oil inlet pipeline, and an oil outlet of the hydraulic pump is respectively connected with the overflow valve, the hydraulic control logic valve and an oil inlet of each proportional flow control valve.

In another aspect of the present invention, the number of the proportional type flow control valves and the number of the check valves are each 1.

In another aspect of the invention, the oil-feeding device further comprises a hydraulic oil tank, wherein the oil return pipeline is connected with an oil return port of the hydraulic oil tank, and the oil inlet pipeline is connected with an oil outlet of the hydraulic oil tank.

In another aspect of the invention, the pilot-controlled logic valve is used for keeping the system pressure at the magnitude of the load pressure after the load is connected and the pre-tightening pressure of the spring of the pilot-controlled logic valve all the time, and the redundant oil is returned to the hydraulic oil tank from the oil outlet of the pilot-controlled logic valve.

The invention has the beneficial effects that: the energy-saving hydraulic vibrating rod speed regulation hydraulic circuit can stably regulate the rotating speed of the hydraulic vibrating rod, reduces the power consumption of a system and is energy-saving.

Description of the drawings:

fig. 1 is a schematic view of a connection structure in embodiment 1 of the present invention.

Fig. 2 is a schematic view of a connection structure in embodiment 2 of the present invention.

In the drawings: 1. the hydraulic control vibrating rod comprises a hydraulic oil tank, 2, a hydraulic pump, 3, an overflow valve, 4, a hydraulic control logic valve, 5, a proportional flow control valve, 6, a pressure compensation type throttling valve, 7, a one-way valve, 8, a hydraulic motor for driving the vibrating rod, 9 and an oil return pipeline.

The specific implementation mode is as follows:

the following describes the embodiments of the present invention with reference to the drawings and examples:

in the description of the present invention, it is to be understood that the description indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.