Telescopic arm hydraulic independent control assembly

Abstract

The utility model provides a telescopic arm hydraulic independent control assembly, including oil tank, hydraulic pump, a plurality of control valves and multiple sets of executing mechanism, the hydraulic pump is connected with oil tank through oil inlet pipeline, a plurality of control valves are connected with hydraulic pump through pressure oil pipeline respectively, each set of executing mechanism includes a plurality of telescopic oil cylinder, and each set of executing mechanism is connected with a control valve through a set of working pipeline respectively. Through adopting the distributed architecture of multiple control valves and multiple sets of executing mechanism one -to -one corresponding connection, each set of executing mechanism has independent and exclusive hydraulic power source and control channel, thereby realizing the real flow decoupling at the system level. When the system executes the composite action, each executing mechanism group can obtain stable, sufficient flow supply from the hydraulic pump simultaneously, avoids the action lag, the card and the unsmooth phenomenon caused by the mutual contention of flow thoroughly, greatly improves the coordination, the response speed and the micro motion performance of the whole machine operation.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control technology, specifically to an independent hydraulic control component for telescopic booms. Background Technology

[0002] In fields such as construction machinery, hydraulically driven telescopic boom systems are widely used. These systems typically consist of an oil tank, a hydraulic pump, a control valve assembly, and multiple telescopic cylinders as actuators. In traditional designs, multiple telescopic cylinders are often controlled and supplied with oil by a centralized control valve assembly. When performing complex movements, this architecture causes the individual cylinder circuits to compete for the limited hydraulic oil flow, resulting in sluggish and unstable movements, and even "jamming" due to uneven flow distribution. This severely restricts the overall machine's working efficiency and operational accuracy.

[0003] To address these issues, the industry has attempted to optimize the system, but most improvements remain limited to oil circuit design within a single valve group, failing to fundamentally resolve the flow interference issues between multiple actuators. Therefore, designing a telescopic boom control system that can achieve flow decoupling at the system architecture level, ensuring independent, efficient, and stable operation of each actuator group, especially under complex operating conditions without interference, has become a pressing technical challenge in this field. Summary of the Invention

[0004] This invention proposes an independent hydraulic control component for telescopic booms, which solves the flow interference problem among multiple actuators in the prior art.

[0005] The technical solution of this utility model is implemented as follows: The telescopic boom hydraulic independent control component includes an oil tank, a hydraulic pump, multiple control valves, and multiple sets of actuators; The hydraulic pump is connected to the oil tank via an oil inlet pipe; The multiple control valves are respectively connected to the hydraulic pump via pressure oil pipelines; Each set of actuators includes multiple telescopic cylinders, and each set of actuators is connected to a control valve through a set of working pipes; The multiple telescopic cylinders of each actuator are connected in series via series oil pipes.

[0006] Furthermore, each of the control valves individually controls each group of actuators.

[0007] Furthermore, the hydraulic pump is a gear pump or a vane pump.

[0008] The beneficial effects of the technical solution provided in this application are as follows: 1. This independent hydraulic control component for telescopic booms fundamentally transforms the traditional crane telescopic boom driven by a single hydraulic circuit through an innovative architecture that combines parallel hydraulic oil supply from multiple sources with tandem cylinder action within the group. In this solution, each actuator is controlled by an independent control valve and a dedicated pressure oil pipeline, forming multiple parallel independent hydraulic power channels. This design achieves true flow distribution and action decoupling at the system level. When the system performs compound actions, different telescopic boom groups can simultaneously receive hydraulic power and independently perform telescopic operations, completely changing the inefficient process of traditional tandem cylinders that must operate sequentially. This not only fundamentally avoids flow interference between multiple mechanisms and eliminates action lag and jamming, but also significantly improves the extension and retraction efficiency of the telescopic boom and the overall operating rhythm by achieving synchronous extension and retraction of multiple cylinder groups.

[0009] 2. This telescopic boom's hydraulic independent control component minimizes the impact of a single circuit's failure or adjustment on the others due to the independent control circuits, enhancing the system's fault tolerance and maintenance convenience. Simultaneously, the efficient and directional utilization of flow reduces unnecessary hydraulic losses and energy dissipation, achieving higher work efficiency and lower energy consumption while ensuring strong driving force for each telescopic cylinder assembly. This comprehensively improves the telescopic boom's operational capability and economy under complex working conditions. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the hydraulic independent control component for the telescopic boom of this utility model.

[0012] In the diagram: 1. Oil tank, 2. Hydraulic pump, 3. Control valve, 4. Actuator, 5. Telescopic cylinder. Detailed Implementation

[0013] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] Please see Figure 1The core concept of the telescopic boom hydraulic independent control component provided by this utility model is to transform the traditional centralized oil supply and control mode into multiple independent control loops through a distributed valve control architecture, thereby eliminating flow interference between multiple actuators from the root.

[0015] The physical components of the system mainly include an oil tank 1, a hydraulic pump 2, multiple control valves 3, and multiple sets of actuators 4. In a preferred embodiment, these components are typically integrated and mounted on a robust base or the frame of engineering machinery to ensure the stability of the system under vibration conditions.

[0016] The oil tank 1 serves as the hydraulic oil source for the system, storing a sufficient amount of hydraulic oil. The oil tank 1 is typically equipped with an oil level gauge for easy monitoring of the oil level and can be fitted with an air filter and other filters to maintain oil cleanliness. The hydraulic pump 2 serves as the power component of the system, with its inlet connected to the internal cavity of the oil tank 1 via an inlet pipe. This inlet pipe is often fitted with a coarse filter to prevent impurities from entering the hydraulic pump 2. In this embodiment, the hydraulic pump 2 is preferably a compact and reliable gear pump or vane pump, driven by an external motor or engine.

[0017] After starting, hydraulic pump 2 draws hydraulic oil from oil tank 1 and converts it into pressurized oil for output. The key innovation of the system lies in the fact that the pressurized oil outlet of hydraulic pump 2 is not connected to a single valve assembly, but rather through a main pressurized oil pipeline to a multi-way branch interface. From this interface, multiple independent pressurized oil branch pipes branch off, each connected to the inlet (P port) of a control valve 3. This parallel oil supply method lays the structural foundation for subsequent independent control.

[0018] The control valves 3 are the core control mechanisms of each actuator, and their number corresponds to the number of actuators 4 that need to be controlled independently. For example, if there are two sets of telescopic booms that need to operate independently, then two control valves 3 are provided. Each control valve 3 is preferably an electromagnetic control valve, especially a three-position four-way electromagnetic directional valve, which can flexibly change the valve core position by receiving external electrical signal commands, thereby controlling the flow direction of the oil. Each control valve 3 is provided with a working oil port (port A and port B) and a return oil port (port T).

[0019] Each set of actuators 4 consists of multiple telescopic cylinders 5, which mechanically drive a telescopic arm. In the hydraulic circuit, multiple telescopic cylinders 5 within the same set are connected sequentially via series oil pipes. Specifically, the piston rod chamber of the preceding cylinder is connected in series with the bottom chamber of the following cylinder via a pipe, and so on. This series connection ensures that the cylinders in this set of actuators have a fixed sequence and speed relationship during operation.

[0020] Each set of actuators 4, as a whole, is connected to a dedicated control valve 3 via a set of working pipes. Specifically, ports A and B of the control valve 3 are connected to the corresponding chambers of the first telescopic cylinder in that set via two main working oil pipes, thus forming a complete and independent control loop isolated from other sets. When the operator needs a certain set of telescopic booms to move, they only need to send a command to the corresponding control valve 3, and pressurized oil will flow into that set of actuators 4 through its dedicated pipe, driving its telescopic cylinder 5 to move, while other loops that have not received a command remain stationary and do not interfere with each other.

[0021] During operation, if a compound action is required, such as the simultaneous extension of both telescopic booms, both control valves 3 will be energized simultaneously. At this time, the pressure oil output from the hydraulic pump 2 will simultaneously enter the two control valves 3 through two independent pressure oil branch pipes, and then drive the actuators 4 controlled by each valve. Since the two circuits are independent at both the oil source end and the valve control end, there is no flow competition between them. Both telescopic booms can obtain a sufficient and stable flow supply, thereby achieving a smooth and synchronous extension action, completely solving the "stuttering" and lag problems caused by flow competition in traditional systems.

[0022] Furthermore, this independent control system exhibits excellent fault tolerance and ease of maintenance. If a control valve 3 or its corresponding actuator 4 malfunctions, the circuit can be easily isolated for repair, while the rest of the system continues to operate normally, greatly improving equipment uptime and maintenance efficiency.

[0023] Finally, the return ports (T ports) of all control valves 3 are connected back to the oil tank 1 via return pipelines, completing the closed-loop circulation of hydraulic oil. As can be seen from the above description of the specific implementation method, this invention, through clear pipeline connections and modular valve control design, constructs an efficient, reliable, and independent control system, perfectly achieving the intended purpose of the invention.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic boom hydraulic independent control component, characterized in that, It includes an oil tank (1), a hydraulic pump (2), multiple control valves (3) and multiple sets of actuators (4); The hydraulic pump (2) is connected to the oil tank (1) through an oil inlet pipe; The multiple control valves (3) are respectively connected to the hydraulic pump (2) through pressure oil pipelines; Each set of actuators (4) includes multiple telescopic cylinders (5), and each set of actuators (4) is connected to a control valve (3) through a set of working pipes; The multiple telescopic cylinders (5) of each actuator (4) are connected in series via a series oil pipe.

2. The telescopic boom hydraulic independent control assembly according to claim 1, characterized in that, Each of the control valves (3) individually controls each group of actuators (4).

3. The telescopic boom hydraulic independent control assembly according to claim 1, characterized in that, The hydraulic pump (2) is a gear pump or a vane pump.

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