一种并联式同轴液压马达实现精确同步控制的液压系统
By using parallel coaxial hydraulic motors and synchronous control components, precise synchronization and efficient energy utilization of the hydraulic system of the six-sided top press are achieved, solving the problems of difficult processing and maintenance, low synchronization accuracy and energy loss of traditional systems, and improving the stability and synthesis quality of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU RUIJUN ELECTROMECHANICAL EQUIP CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional six-sided top press hydraulic systems suffer from problems such as high processing costs and difficult maintenance due to rigid mechanical connections, insufficient synchronization accuracy, easy reversal of hydraulic motors, and large energy losses, making it difficult to meet the requirements of high precision, high efficiency, and high stability operation.
It adopts a parallel coaxial hydraulic motor, and through multiple sets of parallel piston pumps and synchronous motors, combined with components such as straight-through check valves and solenoid directional valves, it realizes independent drive and precise synchronous control of six sets of hydraulic cylinders, prevents hydraulic oil backflow, and optimizes the utilization of idle energy.
It solves the problems of difficult processing and maintenance, low synchronization accuracy and energy loss in traditional systems, improves the stability and energy efficiency of the equipment, and ensures the quality of the synthesized blocks and the safety of the equipment.
Smart Images
Figure CN224515508U_ABST
Abstract
Claims
1. A hydraulic system for realizing precise synchronization control of parallel type coaxial hydraulic motors, characterized by, include: Multiple sets of piston pumps connected in parallel (1); Six sets of synchronous motors (2) are connected to the output ends of multiple sets of piston pumps (1), and the six sets of synchronous motors (2) are arranged in parallel; Six sets of hydraulic cylinders (3), each set of hydraulic cylinders (3) corresponds to and is connected to one of the six sets of synchronous motors (2).
2. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 1, characterized in that, The output ends of the multiple sets of plunger pumps (1) are respectively connected to a first straight-through check valve (4), and one end of the multiple sets of the first straight-through check valves (4) is connected to a first return oil filter (5). The inlet ends of the multiple sets of synchronous motors (2) are connected to a first two-position four-way solenoid directional valve (6). The first return oil filter (5) is connected to the first two-position four-way solenoid directional valve (6).
3. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 2, characterized in that, A second straight-through check valve (7) is provided at the end of the synchronous motor (2) away from the first two-position four-way solenoid directional valve (6). A second two-position four-way solenoid directional valve (8) is provided between the second straight-through check valve (7) and the hydraulic cylinder (3). The six sets of the second two-position four-way solenoid directional valves (8) are respectively connected to the third straight-through check valves (9). The six sets of the third straight-through check valves (9) are connected to the three-position four-way solenoid directional valve (10). The three-position four-way solenoid directional valve (10) is connected to the pipeline between the first return oil filter (5) and the first two-position four-way solenoid directional valve (6). One end of the second straight-through check valve (7) is connected to the pipeline between the second two-position four-way solenoid directional valve (8) and the third straight-through check valve (9).
4. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 3, characterized in that, An ultra-high pressure hydraulic control check valve (11) is provided between the second two-position four-way solenoid directional valve (8) and the hydraulic cylinder (3). The six sets of ultra-high pressure hydraulic control check valves (11) are connected to a third two-position four-way solenoid directional valve (12). The pipeline between the third two-position four-way solenoid directional valve (12) and the first return oil filter (5) and the first two-position four-way solenoid directional valve (6) is connected.
5. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 4, characterized in that, The plunger pump (1) is connected in parallel with the first return oil filter (5) and is equipped with an electromagnetic relief valve (13) and a second return oil filter (14).
6. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 5, characterized in that, Multiple sets of hydraulic cylinders (3) are connected to a three-position four-way solenoid directional valve (10), and a balance valve (15) is provided on the connecting pipeline. A fourth straight-through check valve (16) is provided in parallel with the balance valve (15). A branch is opened on the pipeline between the balance valve (15) and the three-position four-way solenoid directional valve (10) and a low-pressure relief valve (17) is connected.
7. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 6, characterized in that, The pipelines between the six sets of ultra-high pressure hydraulic control check valves (11) and hydraulic cylinders (3) are all branched and connected to a two-position seven-way valve (18). The two-position seven-way valve (18) is connected to the first return oil filter (5) and the first two-position four-way solenoid directional valve (6) through the pipeline, and a fourth two-position four-way solenoid directional valve (19) is installed on the pipeline.
8. The hydraulic system for realizing precise synchronization control of the parallel type coaxial hydraulic motor according to claim 7, characterized in that, A pressure gauge (20) is connected to the two-position seven-way valve (18).