Large-tonnage high-efficiency hot forging equipment

Abstract

The application relates to the technical field of high-efficiency hot forging, and discloses a large-tonnage high-efficiency hot forging equipment which comprises an oil pressure device for providing power output and an oil pipe loop system for realizing oil circuit control and energy management. The large-tonnage high-efficiency hot forging equipment realizes energy storage and recycling through cooperation of an accumulator group and a variable oil pump group in the oil pipe loop system. In an initial stage, the variable oil pump group charges the accumulator to reserve energy, and in a return stroke stage, the accumulator group recycles energy through the oil pump. Compared with a traditional single main oil cylinder driving equipment, the energy consumption is greatly reduced, the problem that power demand increases rapidly with the increase of tonnage and leads to a sharp increase of power grid load is solved, the quick cylinder in the oil pipe loop system is controlled by an independent cartridge valve, the oil circuit is integrated with a two-way cartridge valve to realize millisecond-level response, the quick cylinder can complete the air travel drop in a short time, the accumulator group is connected to the main oil cylinder inlet through high-pressure hoses in parallel, and the volume of oil liquid is instantaneously released to push the main oil cylinder, so that the system reaches large-tonnage output.

Description

Technical Field

[0001] This application relates to the field of high-efficiency hot forging technology, specifically a large-tonnage high-efficiency hot forging equipment. Background Technology

[0002] "High-efficiency hot forging" refers to a forging method that improves performance in various aspects such as production efficiency, energy utilization, and processing accuracy through technological optimization during the hot forging process. Its core lies in solving problems such as high energy consumption, slow response, and low production efficiency in traditional hot forging processes through innovations in equipment structure, control systems, and energy management.

[0003] Currently, the problem of high energy consumption and difficulty in balancing efficiency is particularly prominent in the actual operation of large-tonnage hot forging equipment. Traditional hydraulic forging machines rely on a single main cylinder drive, and as the tonnage increases, its power demand rises exponentially, directly causing a sharp increase in the load on the power grid. Although multi-cylinder synchronous systems can improve speed to some extent, there is a risk of oil circuit interference. In recent years, although servo direct drive technology can achieve energy-saving effects, the cost of servo motors in large equipment is high, and their dynamic response speed still cannot meet the actual needs of fast forging processes. Therefore, this paper proposes a high-efficiency hot forging equipment for large tonnage. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a high-tonnage, high-efficiency hot forging equipment, characterized by efficient energy utilization, rapid response, and large-tonnage output.

[0005] To achieve the above objectives, this application provides the following technical solution: a large-tonnage, high-efficiency hot forging equipment, comprising a hydraulic device for providing power output and an oil pipe circuit system for realizing oil circuit control and energy management. The hydraulic device includes a main cylinder and a rapid cylinder symmetrically arranged around the main cylinder. The output ends of the main cylinder and the rapid cylinder are connected to the middle beam through flanges. The oil pipe circuit system includes an accumulator group, a variable oil pump group, and an oil storage tank. The accumulator group is connected in parallel to the oil inlet of the main cylinder through a high-pressure hose. The rapid cylinder is controlled by an independent cartridge valve. A proportional pressure reducing valve is installed between the main cylinder and the accumulator group. The rapid cylinder oil circuit integrates a two-way cartridge valve to achieve millisecond-level response. The oil pipe circuit system can control the oil pump group to charge the accumulator, the accumulator to release oil to push the main cylinder, and the auxiliary cylinder to pull the middle beam upward. When these actions occur, the accumulator group recovers energy through the oil pump.

[0006] The above scheme clarifies that the equipment consists of a hydraulic device and an oil pipe circuit system, forming a collaborative architecture of "power output + oil circuit control". Compared with the traditional single main cylinder drive, it realizes the modular design of energy management and power output, solving the problem that the power demand of traditional equipment increases exponentially with tonnage. The main cylinder and the symmetrical fast cylinder are connected to the central beam through flanges, and are connected in parallel to the main cylinder oil inlet circuit with the accumulator group, realizing the compound action of "fast cylinder idle stroke descent + accumulator instantaneous energy release to drive the main cylinder", so that the total output of the system reaches the large tonnage level, while avoiding the oil circuit interference risk of multi-cylinder synchronous systems. The independent cartridge valve control of the fast cylinder + the millisecond-level response of the two-way cartridge valve solves the problem of dynamic response lag in servo direct drive technology. The proportional pressure reducing valve adjusts the pressure of the main cylinder oil inlet circuit to ensure the system stability when the output is large. The oil pipe circuit system realizes the closed-loop management of "filling and holding pressure - energy release forging - energy recovery", which reduces energy consumption compared with traditional equipment and reduces the dependence on high-cost servo motors.

[0007] Furthermore, each accumulator group in the oil pipe circuit system contains multiple piston accumulators.

[0008] With the above scheme, each accumulator group contains multiple piston accumulators. The parallel structure increases the liquid storage volume and pressure reserve capacity, ensuring that enough oil can be released instantly to drive the main cylinder during the rapid forging stage, improving the stability and continuity of the system output, and avoiding forging force fluctuations caused by insufficient capacity of a single accumulator.

[0009] Furthermore, in the oil pipe circuit system, the accumulator group is connected in parallel to the main oil cylinder inlet circuit via a high-pressure hose, which enables the accumulator group to instantly release its volume of oil to drive the main oil cylinder.

[0010] Through the above scheme, the accumulator group is connected in parallel to the main oil cylinder inlet through a high-pressure hose, forming a short-path, high-flow energy release channel. It can release a large amount of oil in a very short time, so that the main oil cylinder can obtain sufficient thrust. In conjunction with the rapid cylinder, it can achieve a large tonnage output and solve the problems of insufficient output or slow response of traditional equipment.

[0011] Furthermore, the independent cartridge valve control method used in the rapid cylinder of the oil pipe circuit system enables the rapid cylinder to complete the idle descent in a short time.

[0012] The above solution utilizes an independent cartridge valve control method, enabling the rapid cylinder to complete its idle descent in a short time, shortening forging preparation time and improving equipment efficiency. Compared to the hydraulic circuit interference risks of traditional multi-cylinder systems, independent control ensures the accuracy and timeliness of the rapid cylinder's actions, making it particularly suitable for the speed requirements of fast forging processes.

[0013] Furthermore, the proportional pressure reducing valve between the main cylinder and the accumulator group is used to regulate the pressure of the main cylinder's oil inlet circuit.

[0014] Through the above solution, the proportional pressure reducing valve can adjust the pressure in the main cylinder's inlet circuit in real time according to the forging process requirements, avoiding equipment damage due to excessive pressure or affecting the forging effect due to insufficient pressure, thus improving the system's adaptability and reliability. At the same time, precise pressure control helps extend the service life of the main cylinder and related components.

[0015] Furthermore, the two-way cartridge valve integrated into the rapid cylinder oil circuit enables millisecond-level response control of the rapid cylinder oil circuit.

[0016] Through the above solution, the two-way cartridge valve is integrated into the hydraulic circuit of the rapid cylinder, realizing millisecond-level response control. This makes the rapid cylinder action more synchronized with the accumulator energy release and the main cylinder push, solving the problem of lag in dynamic response of servo direct drive technology. It ensures the coordinated action of each actuator during rapid forging, improving forging accuracy and efficiency.

[0017] Furthermore, the variable oil pump group in the oil pipe circuit system is used to charge the accumulator with liquid, so that the main oil cylinder is in a pressure-holding state.

[0018] Through the above scheme, the variable displacement pump unit charges the accumulator to the set pressure, keeping the main cylinder in a pressure-holding state and storing energy for subsequent forging. The variable displacement pump can automatically adjust its output according to the accumulator pressure, avoiding the energy waste of traditional fixed displacement pumps, while ensuring the stability of the pressure-holding process and providing a continuous energy foundation for high-tonnage output.

[0019] Furthermore, the oil pipe circuit system works in conjunction with the hydraulic device to enable the system to achieve a large tonnage output.

[0020] Through the above scheme, the coordinated operation of the oil pipe circuit system and the hydraulic device, through the integration of mechanisms such as multi-cylinder drive, accumulator energy release, and precise oil circuit control, enables the total output of the system to reach the large tonnage level. At the same time, it takes into account energy consumption reduction, efficiency improvement and cost control, and comprehensively solves the technical bottleneck of "high energy consumption, low efficiency and high cost" of traditional large-tonnage hot forging equipment, and has significant engineering practicality and market competitiveness.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This high-tonnage, high-efficiency hot forging equipment achieves energy storage and recovery through the cooperation of an accumulator group and a variable displacement pump group in the oil pipeline circuit system. In the initial stage, the variable displacement pump group charges the accumulator to store energy; in the return stage, the accumulator group recovers energy through the pump, avoiding energy waste. Compared with traditional single-main-cylinder driven equipment, this significantly reduces energy consumption and solves the problem of power demand surging with increasing tonnage, leading to a surge in grid load. The fast cylinder in the oil pipeline circuit system uses an independent cartridge valve for control, and the integrated two-way cartridge valve in the oil circuit achieves millisecond-level response, allowing the fast cylinder to complete its idle descent in a short time. In conjunction with the accumulator group, which is connected in parallel to the main cylinder inlet via a high-pressure hose, the system instantly releases the volume of oil to drive the main cylinder, enabling the system to achieve high-tonnage output and effectively improving forging efficiency. This solves the problems of oil circuit interference in multi-cylinder synchronous systems and the dynamic response lag of servo direct drive technology. This invention achieves efficient energy management through an oil pipe loop system composed of an accumulator group and a variable oil pump group, avoiding the problem of excessively high overall machine cost caused by the use of high-cost servo motors in large equipment, thus reducing equipment cost. A proportional pressure reducing valve is installed between the main oil cylinder and the accumulator group to adjust the oil inlet pressure of the main oil cylinder, making the system output more stable, improving the reliability and stability of equipment operation, and further optimizing the working performance of the equipment. The coordinated work of the oil pipe loop system and the hydraulic device realizes efficient energy utilization, rapid response and large tonnage output, comprehensively solving the problems of high energy consumption, low efficiency, high cost and slow response of traditional large-tonnage hot forging equipment, and has significant technical advantages and practical value. Attached Figure Description

[0023] Figure 1 This is the overall architecture diagram of the large-tonnage, high-efficiency hot forging equipment for this application;

[0024] Figure 2 This is a schematic diagram of the oil pipe loop system of this application;

[0025] Figure 3 This is the control circuit diagram for the energy storage device in this application;

[0026] Figure 4 This is the control circuit diagram for the fast cylinder cartridge valve of this application;

[0027] Figure 5 This is a flowchart of the energy recovery system of this application.

[0028] In the picture:

[0029] 1. Hydraulic unit; 2. Oil pipeline circuit system; 3. Main cylinder; 4. Quick cylinder; 5. Accumulator group; 6. Variable oil pump group; 7. Oil reservoir; 8. Proportional pressure reducing valve. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 and Figure 2 This embodiment describes a high-tonnage, high-efficiency hot forging equipment, including a hydraulic device 1 for providing power output and an oil pipe circuit system 2 for realizing oil circuit control and energy management. The hydraulic device 1 includes a main cylinder 3 and a rapid cylinder 4 symmetrically arranged around the main cylinder 3. The output ends of the main cylinder 3 and the rapid cylinder 4 are connected to the middle beam via flanges. The oil pipe circuit system 2 includes an accumulator group 5, a variable oil pump group 6, and an oil tank 7. The accumulator group 5 is connected in parallel to the oil inlet of the main cylinder 3 via a high-pressure hose. The rapid cylinder 4 is controlled by an independent cartridge valve. A proportional pressure reducing valve 8 is installed between the main cylinder 3 and the accumulator group 5. The oil circuit of the rapid cylinder 4 integrates a two-way cartridge valve to achieve millisecond-level response. The oil pipe circuit system 2 can control the oil pump group to charge the accumulator, the accumulator to release oil to push the main cylinder 3, and the auxiliary cylinder to pull the middle beam upward. When these actions occur, the accumulator group 5 recovers energy through the oil pump. The equipment is clearly composed of the hydraulic device 1 and the oil pipe circuit system 2, forming a "power output + oil circuit control" system. Compared to the traditional single main cylinder 3 drive, the collaborative architecture realizes modular design of energy management and power output, solving the problem of power demand of traditional equipment increasing exponentially with tonnage. The main cylinder 3 and the symmetrical fast cylinder 4 are connected to the central beam through flanges, and are connected in parallel to the oil inlet of the main cylinder 3 with the accumulator group 5, realizing the compound action of "fast cylinder 4 descent during idle stroke + instantaneous energy release of the accumulator to drive the main cylinder 3", so that the total output of the system reaches the large tonnage level, while avoiding the oil circuit interference risk of multi-cylinder synchronous systems. The fast cylinder 4 is controlled by an independent cartridge valve + the two-way cartridge valve has a millisecond-level response, which solves the problem of dynamic response lag in servo direct drive technology. The proportional pressure reducing valve 8 adjusts the oil inlet pressure of the main cylinder 3 to ensure the system stability when the output is large. The oil pipe circuit system 2 realizes the closed-loop management of "filling and holding pressure - energy release forging - energy recovery", which reduces energy consumption compared with traditional equipment and reduces the dependence on high-cost servo motors.

[0032] Please see Figure 2 , Figure 3 and Figure 4In the oil pipe circuit system 2, the accumulator group 5, each containing multiple piston accumulators, is connected in parallel to the main cylinder 3's oil inlet via high-pressure hoses. This structure allows the accumulator group 5 to instantly release its volume of oil to drive the main cylinder 3. The rapid cylinder 4 in the oil pipe circuit system 2 uses an independent cartridge valve control method, enabling it to complete its no-stroke descent in a short time. Each accumulator group contains multiple piston accumulators, and the parallel structure increases the fluid storage volume and pressure reserve capacity, ensuring that sufficient oil can be instantly released to drive the main cylinder during the rapid forging stage. Cylinder 3 enhances the stability and continuity of the system's output, avoiding forging force fluctuations caused by insufficient capacity of a single accumulator. Accumulator group 5 is connected in parallel to the oil inlet of main cylinder 3 via a high-pressure hose, forming a short-path, high-flow-rate energy release channel. This allows for the release of a large amount of oil in a very short time, providing sufficient thrust to main cylinder 3. Working in conjunction with rapid cylinder 4, it achieves high-tonnage output, solving the problems of insufficient output or slow response in traditional equipment. The independent cartridge valve control method enables rapid cylinder 4 to complete its idle descent in a short time, shortening forging preparation time and improving equipment efficiency. Compared to the oil circuit interference risks of traditional multi-cylinder systems, independent control ensures the accuracy and timeliness of rapid cylinder 4's action, making it particularly suitable for the speed requirements of fast forging processes.

[0033] Please see Figure 3 , Figure 4 and Figure 5The proportional pressure reducing valve 8 between the main cylinder 3 and the accumulator group 5 is used to regulate the pressure of the main cylinder 3's oil inlet circuit. The two-way cartridge valve integrated in the oil circuit of the rapid cylinder 4 can achieve millisecond-level response control of the rapid cylinder 4's oil circuit. The variable oil pump group 6 in the oil pipe circuit system 2 is used to charge the accumulator, so that the main cylinder 3 is in a pressure-holding state. The oil pipe circuit system 2 works in conjunction with the hydraulic device 1 to enable the system to achieve a large tonnage output. The proportional pressure reducing valve 8 can adjust the pressure of the main cylinder 3's oil inlet circuit in real time according to the forging process requirements, avoiding equipment damage due to excessive pressure or affecting the forging effect due to insufficient pressure, and improving the system's adaptability and reliability. Meanwhile, precise pressure control helps extend the service life of the main cylinder 3 and related components. The two-way cartridge valve is integrated into the oil circuit of the fast cylinder 4 to achieve millisecond-level response control, making the action of the fast cylinder 4 more synchronized with the energy release of the accumulator and the pushing of the main cylinder 3. This solves the problem of the lag in dynamic response of servo direct drive technology, ensures the coordinated action of each actuator during the fast forging process, and improves forging accuracy and efficiency. The variable oil pump group 6 charges the accumulator to the set pressure, so that the main cylinder 3 is in a pressure holding state, storing energy for subsequent forging. The variable displacement pump can automatically adjust its output according to the accumulator pressure, avoiding the energy waste of traditional fixed displacement pumps, while ensuring the stability of the pressure holding process and providing a continuous energy foundation for large-tonnage output. The coordinated cooperation between the oil pipe circuit system 2 and the hydraulic device 1, through the integration of mechanisms such as multi-cylinder drive, accumulator energy release, and precise oil circuit control, enables the total output of the system to reach the large-tonnage level, while taking into account energy consumption reduction, efficiency improvement, and cost control. It comprehensively solves the technical bottleneck of "high energy consumption, low efficiency, and high cost" of traditional large-tonnage hot forging equipment, and has significant engineering practicality and market competitiveness.

[0034] In this embodiment, the storage and recovery of energy are achieved through the cooperation of the accumulator group 5 and the variable oil pump group 6 in the oil pipe loop system 2. In the initial stage, the variable oil pump group 6 charges the accumulator to store energy. In the return stage, the accumulator group 5 recovers energy through the oil pump, avoiding energy waste. Compared with the traditional single main cylinder 3 drive equipment, this significantly reduces energy consumption and solves the problem of power demand increasing with tonnage, leading to a surge in grid load. The fast cylinder 4 in the oil pipe loop system 2 uses an independent cartridge valve control, and the integrated two-way cartridge valve in the oil circuit achieves millisecond-level response, allowing the fast cylinder 4 to complete its idle descent in a short time. In conjunction with the accumulator group 5, which is connected in parallel to the main cylinder 3's oil inlet via a high-pressure hose, it instantly releases the volume of oil to drive the main cylinder 3, enabling the system to achieve high-tonnage output, effectively improving forging efficiency, and solving the problems of oil circuit interference in multi-cylinder synchronous systems and the dynamic response lag of servo direct drive technology. The problem is that the oil pipe circuit system 2, composed of accumulator group 5 and variable oil pump group 6, achieves efficient energy management, avoiding the problem of excessively high overall cost of large equipment due to the use of high-cost servo motors, thus reducing equipment cost. A proportional pressure reducing valve 8 is set between the main oil cylinder 3 and the accumulator group 5 to adjust the oil inlet pressure of the main oil cylinder 3, making the system output more stable, improving the reliability and stability of equipment operation, and further optimizing the working performance of the equipment. The coordinated work of oil pipe circuit system 2 and hydraulic device 1 realizes efficient energy utilization, rapid response and large tonnage output, comprehensively solving the problems of high energy consumption, low efficiency, high cost and slow response of traditional large-tonnage hot forging equipment, and has significant technical advantages and practical value.

[0035] The working principle of the above embodiment is as follows: The variable oil pump group 6 in the oil pipe circuit system 2 starts to work, charging the accumulator group 5 with liquid. When the pressure reaches the set value, the main oil cylinder 3 is in the pressure holding state, completing the initial energy storage. In this stage, the cooperation between the variable oil pump group 6 and the accumulator group 5 provides the energy basis for the subsequent forging work. When the fast forging command is received, the fast cylinder 4 in the oil pipe circuit system 2 is controlled by an independent cartridge valve, so that it completes the idle stroke descent in a short time to prepare for forging. At the same time, the accumulator group 5 is connected in parallel to the oil inlet of the main oil cylinder 3 through a high-pressure hose, instantly releasing the stored volume of oil. After the hydraulic fluid passes through the proportional pressure reducing valve 8 between the main cylinder 3 and the accumulator group 5, it drives the main cylinder 3 to move. The output ends of the main cylinder 3 and the fast cylinders 4 symmetrically arranged around it are connected to the middle beam through flanges. Together, they enable the system to achieve high-tonnage output and realize efficient hot forging. During this process, the two-way cartridge valve integrated in the oil circuit of the fast cylinder 4 plays a role, realizing millisecond-level response control of the oil circuit of the fast cylinder 4, ensuring that the actions of the fast cylinder 4 and the main cylinder 3 are coordinated and consistent, improving forging efficiency. After forging is completed, the return phase begins. The auxiliary cylinder pulls the middle beam up. At this time, the oil pipe circuit system 2 controls the accumulator group 5 to recover energy through the oil pump. The energy generated during the return process is stored back in the accumulator group 5 for use in the next working cycle, realizing energy recycling and improving energy utilization. Throughout the entire working process, the hydraulic device 1 is responsible for providing power output, and the oil pipe circuit system 2 realizes oil circuit control and energy management. The two work together. The accumulator group 5, variable oil pump group 6, oil storage tank 7, and various valves in the oil pipeline loop system 2 work together to ensure that the equipment can operate efficiently and stably in all stages, such as initial storage, fast forging execution, and return recovery, thereby achieving the goal of high-tonnage and high-efficiency hot forging.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-tonnage high-efficiency hot forging equipment comprising an oil pressure device (1) for providing power output and an oil pipe circuit system (2) for realizing oil path control and energy management, characterized in that: The hydraulic device (1) includes a main cylinder (3) and a fast cylinder (4) symmetrically arranged around the main cylinder (3). The output ends of the main cylinder (3) and the fast cylinder (4) are connected to the middle beam through flanges. The oil pipe circuit system (2) includes an accumulator group (5), a variable oil pump group (6), and an oil storage tank (7). The accumulator group (5) is connected in parallel to the oil inlet of the main cylinder (3) through a high-pressure hose. The fast cylinder (4) is controlled by an independent cartridge valve. A proportional pressure reducing valve (8) is set between the main cylinder (3) and the accumulator group (5). The oil circuit of the fast cylinder (4) integrates a two-way cartridge valve to achieve millisecond-level response. The oil pipe circuit system (2) can control the oil pump group to charge the accumulator, the accumulator to release oil to push the main cylinder (3), and the auxiliary cylinder to pull the middle beam up. The accumulator group (5) recovers energy through the oil pump.

2. A high tonnage high efficiency hot forging apparatus as claimed in claim 1, wherein: The accumulator group (5) in the oil pipe circuit system (2) contains multiple piston accumulators.

3. A high tonnage high efficiency hot forging apparatus as claimed in claim 1 wherein: In the oil pipe circuit system (2), the accumulator group (5) is connected in parallel to the oil inlet of the main oil cylinder (3) through a high-pressure hose, which enables the accumulator group (5) to release the volume of oil instantly to drive the main oil cylinder (3).

4. A high tonnage high efficiency hot forging apparatus as claimed in claim 1 wherein: The independent cartridge valve control method adopted by the rapid cylinder (4) in the oil pipe circuit system (2) enables the rapid cylinder (4) to complete the idle stroke descent in a short time.

5. A high tonnage high efficiency hot forging apparatus as claimed in claim 1 wherein: The proportional pressure reducing valve (8) between the main oil cylinder (3) and the accumulator group (5) is used to regulate the pressure of the oil inlet circuit of the main oil cylinder (3).

6. A high tonnage high efficiency hot forging apparatus as claimed in claim 1 wherein: The two-way cartridge valve integrated in the oil circuit of the rapid cylinder (4) can achieve millisecond-level response control of the oil circuit of the rapid cylinder (4).

7. A high tonnage high efficiency hot forging apparatus as claimed in claim 1 wherein: The variable oil pump group (6) in the oil pipe circuit system (2) is used to charge the accumulator with liquid so that the main oil cylinder (3) is in a pressure-holding state.

8. A high tonnage high efficiency hot forging apparatus as claimed in claim 1 wherein: The oil pipe circuit system (2) works in conjunction with the oil pressure device (1) to enable the system to achieve a large tonnage output.

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