Upsetting hydraulic system of electric upsetting machine

Abstract

The utility model discloses an upsetting hydraulic system of an electric upsetting machine, which relates to the technical field of hydraulic systems and mainly structurally comprises a first electromagnetic directional valve, a second electromagnetic directional valve, an electromagnetic relief valve, an oil path block, a proportional relief valve, a duplex hydraulic pump, a motor and an upsetting hydraulic cylinder. A first pressure oil port, a first oil return port, a second pressure oil port, a second oil return port, a first connector and a second connector are arranged on the oil path block. According to the upsetting hydraulic system of the electric upsetting machine, rapid feeding, rapid retreating, slow feeding and slow retreating can be achieved, the electric upsetting machine is made to be smoother in the whole electric upsetting process, and the working efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to an electric upsetting machine top forging hydraulic system. Background Art

[0002] The existing hydraulic system of the electric upsetting machine can only provide one speed during the working process, and a slow speed is required due to the working process.

[0003] For example, the patent with publication number CN117066426A discloses a hydraulic system of a cold heading machine, including a hydraulic box, both sides of the right end of the hydraulic box are fixedly installed with a limit box, the left end of the inner cavity of the limit box is fixedly installed with a connecting pipe, the front surface of the connecting pipe is sleeved with an oil pipeline, both sides of the inner cavity of the limit box are fixedly installed with a light rod, the front surface of the light rod is slidably installed with a slip ring, the end of the slip ring close to each other is fixedly installed with a cross plate, and the end of the inner cavity of the cross plate away from each other is clamped with a support rod through a slot. The present invention solves the problem that the hydraulic device of the existing cold heading machine does not have the ability to reinforce the connected pipeline, which may cause the pipeline to fall off and cause the equipment to be paralyzed, greatly reducing the market share, increasing the cost of users, and failing to meet people's use needs through the arrangement of the limit box, the light rod, the slip ring, the buffer pad, the support rod, the limit ring, the connecting pipe, the cross plate, the electric telescopic rod, the mounting hole and the mounting rod.

[0004] The existing hydraulic system of the electric upsetting machine has a small flow and a low speed, which results in a lot of time for the push rod to descend to its original position after the electric upsetting is completed, resulting in low work efficiency.

[0005] Based on this, the utility model provides a dual-control hydraulic system for an electric upsetting machine. Summary of the invention

[0006] In order to solve the above technical problems, the utility model provides an electric upsetting machine hydraulic system, which can realize fast forward and fast rewind of the system while retaining the original functions, so that the upsetting can be quickly raised and lowered without working, saving unnecessary time and improving work efficiency.

[0007] To achieve the above purpose, the utility model provides the following solutions:

[0008] The utility model provides an electric upsetting machine upsetting hydraulic system, comprising a first electromagnetic reversing valve, a second electromagnetic reversing valve, an electromagnetic overflow valve, an oil circuit block, a proportional overflow valve, a double hydraulic pump, a motor and an upsetting hydraulic cylinder; the oil circuit block is provided with a first pressure oil port, a first return oil port, a second pressure oil port, a second return oil port, a first interface and a second interface; the double hydraulic pump is drivingly connected with the output shaft of the motor, the large flow output port of the double hydraulic pump is connected with the first pressure oil port, and the small flow output port of the double hydraulic pump is connected with the second pressure oil port; the first interface and the second interface are respectively connected with the rodless chamber and the rod chamber of the upsetting hydraulic cylinder; the first electromagnetic reversing valve, the second electromagnetic reversing valve, the electromagnetic overflow valve and the proportional overflow valve are all arranged on the oil circuit block; the electromagnetic overflow valve and the second electromagnetic reversing valve are arranged The first pressure oil port is connected to the first interface and the second interface; the inlet end of the electromagnetic overflow valve is connected to the first pressure oil port through the oil circuit in the oil circuit block, the outlet end of the electromagnetic overflow valve is connected to the inlet end of the second electromagnetic reversing valve through the oil circuit in the oil circuit block, and the outlet end of the second electromagnetic reversing valve is connected to the first interface and the second interface through the oil circuit in the oil circuit block; the first electromagnetic reversing valve and the proportional overflow valve are arranged at the second pressure oil port and are connected to the first interface and the second interface; the proportional overflow valve is connected to the second pressure oil port through the oil circuit in the oil circuit block, the proportional overflow valve is connected to the inlet end of the first electromagnetic reversing valve through the oil circuit in the oil circuit block, and the first electromagnetic reversing valve is connected to the first interface and the second interface through the oil circuit in the oil circuit block.

[0009] Optionally, a second pressure gauge is provided on the oil circuit in the oil circuit block for connecting the electromagnetic overflow valve and the second electromagnetic reversing valve.

[0010] Optionally, a first pressure gauge is provided on the oil circuit in the oil circuit block for connecting the first electromagnetic reversing valve and the proportional relief valve.

[0011] Optionally, a tube-type one-way valve is respectively provided on the small-flow output port and the large-flow output port of the double hydraulic pump.

[0012] Compared with the prior art, the utility model has achieved the following technical effects:

[0013] The electric upsetting machine top forging hydraulic system of the utility model can realize fast working advance, fast retreat, slow working advance and slow retreat, so as to make the electric upsetting machine more smooth in the whole electric upsetting process and have higher working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is the hydraulic principle diagram of the hydraulic system of the electric upsetting machine of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the hydraulic system of the electric upsetting machine of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the hydraulic system of the electric upsetting machine of the utility model from another perspective;

[0018] Figure 4 It is a structural schematic diagram of the motor and the double hydraulic pump in the hydraulic system of the electric upsetting machine of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the oil circuit block in the hydraulic system of the electric upsetting machine of the utility model;

[0020] Figure 6 This is a schematic diagram of the internal structure of the oil circuit block in the hydraulic system of the electric upsetting machine of the utility model;

[0021] Figure 7 It is a structural schematic diagram from another perspective of the oil circuit block in the top forging hydraulic system of the electric upsetting machine of the utility model.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. First solenoid reversing valve; 2. Second solenoid reversing valve; 3. Solenoid overflow valve; 4. Oil circuit block; 5. Proportional overflow valve; 6. First pressure gauge; 7. Second pressure gauge; 8. Dual hydraulic pump; 9. Motor; 10. First pressure oil port; 11. First oil return port; 12. Second pressure oil port; 13. Second oil return port; 14. First interface; 15. Second interface; 16. Upsetting hydraulic cylinder. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 7As shown, the present embodiment provides an electric upsetting machine upsetting hydraulic system, comprising a first electromagnetic reversing valve 1, a second electromagnetic reversing valve 2, an electromagnetic relief valve 3, an oil circuit block 4, a proportional relief valve 5, a double hydraulic pump 8, a motor 9 and an upsetting hydraulic cylinder 16; the oil circuit block 4 is provided with a first pressure oil port 10, a first return oil port 11, a second pressure oil port 12, a second return oil port 13, a first interface 14 and a second interface 15; the output shafts of the double hydraulic pump 8 and the motor 9 are drivingly connected, the large flow output port of the double hydraulic pump 8 is connected to the first pressure oil port 10, and the small flow output port of the double hydraulic pump 8 is connected to the second pressure oil port 12; the first interface 14 and the second interface 15 are respectively connected to the rodless chamber and the rod chamber of the upsetting hydraulic cylinder 16; the first electromagnetic reversing valve 1, the second electromagnetic reversing valve 2, the electromagnetic relief valve 3 and the proportional relief valve 5 are all arranged on the oil circuit block 4; The magnetic overflow valve 3 and the second electromagnetic reversing valve 2 are arranged at the first pressure oil port 10 and are connected with the first interface 14 and the second interface 15; the electromagnetic overflow valve 3 is connected with the first pressure oil port 10 through the oil circuit in the oil circuit block 4, the electromagnetic overflow valve 3 is connected with the inlet end of the second electromagnetic reversing valve 2 through the oil circuit in the oil circuit block 4, and the second electromagnetic reversing valve 2 is connected with the first interface 14 and the second interface 15 through the oil circuit in the oil circuit block 4; the first electromagnetic reversing valve 1 and the proportional overflow valve 5 are arranged between the second pressure oil port 12 and the first interface 14 and the second interface 15; the proportional overflow valve 5 is connected with the first electromagnetic reversing valve 1 through the oil circuit in the oil circuit block 4, the inlet end of the first electromagnetic reversing valve 1 is connected with the second pressure oil port 12 through the oil circuit in the oil circuit block 4, and the first electromagnetic reversing valve 1 is connected with the first interface 14 and the second interface 15 through the oil circuit in the oil circuit block 4.

[0025] In this specific embodiment, a second pressure gauge 7 is provided on the oil circuit in the oil circuit block 4 for connecting the electromagnetic relief valve 3 and the second electromagnetic reversing valve 2. A first pressure gauge 6 is provided on the oil circuit in the oil circuit block 4 for connecting the first electromagnetic reversing valve 1 and the proportional relief valve 5. A tubular check valve is provided on the small flow output port and the large flow output port of the double hydraulic pump 8, respectively.

[0026] The electric upsetting machine upsetting hydraulic system in this embodiment drives the double hydraulic pump 8 through the motor 9 to generate two different oil circuits, one for large flow and the other for small flow. The small flow oil circuit first passes through the tubular one-way valve, then passes through the proportional relief valve 5, and the oil pressure is controlled, and then through the first electromagnetic reversing valve 1, the first interface 14 and the second interface 15 are respectively supplied to the oil inlet and outlet of the upsetting hydraulic cylinder 16, the T port of the first electromagnetic reversing valve 1 is connected to the second oil return port 13, and the second oil return port 13 is directly connected to the oil tank. The large flow oil circuit first passes through the tubular one-way valve, then passes through the electromagnetic relief valve 3 to control the oil pressure, and then through the second electromagnetic reversing valve 2, the first interface 14 and the second interface 15 are respectively supplied to the oil inlet and outlet of the upsetting hydraulic cylinder 16, the T port of the second electromagnetic reversing valve 2 is connected to the first oil return port 11, and the first oil return port 11 is directly connected to the oil tank.

[0027] In the electric upsetting machine top forging hydraulic system in this embodiment, the oil circuit is divided into four circuits, namely a fast working advance oil circuit, a fast retracting oil circuit, a slow working advance oil circuit and a slow retracting oil circuit.

[0028] The fast forward and fast reverse oil circuits, the oil enters the oil circuit block 4 from the first pressure oil port 10 and is connected to the electromagnetic overflow valve 3 through the mutually staggered oil circuits. The fast forward is that the first pressure oil port 10 is connected to the second interface through the second electromagnetic reversing valve 2 and the electromagnetic overflow valve 3, the first interface 14 is connected to the rod chamber of the top forging hydraulic cylinder 16, the second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16, the second interface 15 is connected to the first pressure oil port 10 through the second electromagnetic reversing valve 2 and the electromagnetic overflow valve 3, the first interface 14 is connected to the first oil return port 11 through the second electromagnetic reversing valve 2, to achieve fast forward.

[0029] For quick retreat, the first pressure oil port 10 is connected to the first interface 14 through the second solenoid reversing valve 2 and the solenoid overflow valve 3, the first interface 14 is connected to the rod chamber of the top forging hydraulic cylinder 16, the second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16, the first interface 14 is connected to the first pressure oil port 10 through the second solenoid reversing valve 2 and the solenoid overflow valve 3, the second interface 15 is connected to the first oil return port 11 through the second solenoid reversing valve 2, to achieve quick retreat.

[0030] The slow forward and slow reverse oil circuits, the oil enters the oil circuit block 4 from the second pressure oil port 12 and is interconnected with the first solenoid reversing valve 1 through the interlaced oil circuits. The slow speed is that the second pressure oil port 12 is connected to the second interface 15 through the first solenoid reversing valve 1 and the proportional relief valve 5, the second interface 15 is connected to the rodless cavity of the top forging hydraulic cylinder 16, the first interface 14 is connected to the rod cavity of the top forging hydraulic cylinder 16, the second interface 15 is connected to the second pressure port 12 through the first solenoid reversing valve 1 and the proportional relief valve 5, the first interface 14 is connected to the second oil return port 13 through the first solenoid reversing valve 1, to achieve slow forward. For slow retreat, the second pressure oil port 12 is connected to the first interface 14 through the first solenoid reversing valve 1 and the proportional relief valve 5. The first interface 14 is connected to the rod chamber of the top forging hydraulic cylinder 16, and the second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16. The first interface 14 is connected to the second pressure port 12 through the first solenoid reversing valve 1 and the proportional relief valve 5, and the second interface 14 is connected to the second oil return port 13 through the first solenoid reversing valve 1, so as to realize slow retreat.

[0031] Fast forward and fast reverse process: the oil is supplied to the first pressure oil port 10 of the oil inlet in the oil circuit block 4 by the double hydraulic pump 8. The oil entering the first pressure oil port 10 of the oil inlet first passes through the electromagnetic overflow valve 3. The electromagnetic overflow valve 3 controls the pressure of this oil circuit. The controlled oil then passes through the second electromagnetic reversing valve 2 and is connected to the first interface 14 and the second interface 15 in the oil circuit block 4 respectively through electromagnetic reversing. The fast forward is that the controlled oil passes through the second electromagnetic reversing valve 2 to connect the second interface 15 in the oil circuit block 4. The second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16, and the first interface 14 is connected to the top forging hydraulic cylinder 16. The rod chamber of the forging hydraulic cylinder 16, the first interface 14 is connected to the first oil return port 11 in the oil circuit block 4 after passing through the second electromagnetic reversing valve 2, and the first oil return port 11 is connected to the oil tank, thereby realizing rapid working forward; rapid retreat is achieved by controlling the oil to pass through the second electromagnetic reversing valve 2 to connect to the first interface 14 in the oil circuit block 4, the first interface 14 is connected to the rod chamber of the top forging hydraulic cylinder 16, the second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16, the return oil of the second interface 15 is connected to the first oil return port 11 in the oil circuit block 4 after passing through the first electromagnetic reversing valve 1, and the first oil return port 11 is connected to the oil tank, thereby realizing rapid retreat.

[0032] Slow forward and slow reverse process: the oil is supplied to the second pressure oil port 12 of the oil inlet in the oil circuit block 4 by the double hydraulic pump 8. The oil entering the second pressure oil port 12 of the oil inlet first passes through the proportional relief valve 5. The proportional relief valve 5 controls the pressure of this oil circuit. The controlled oil then passes through the first electromagnetic reversing valve 1 and is connected to the first interface 14 and the second interface 15 in the oil circuit block 4 through electromagnetic reversing. The slow forward is that the controlled oil passes through the first electromagnetic reversing valve 1 to connect the second interface 15 in the oil circuit block 4. The second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16, and the first interface 14 is connected to the top forging hydraulic cylinder 16. The rod chamber of the forging hydraulic cylinder 16, the return oil from the first interface 14 is connected to the second oil return port 13 in the oil circuit block 4 after passing through the second solenoid reversing valve 2, and the second oil return port 13 is connected to the oil tank, thereby realizing slow working forward; the slow retreat is achieved by controlling the oil to connect the first interface 14 in the oil circuit block 4 through the first solenoid reversing valve 1, the first interface 14 is connected to the rod chamber of the top forging hydraulic cylinder 16, and the second interface 15 is connected to the rodless chamber of the top forging hydraulic cylinder 16, the return oil from the first interface is connected to the second oil return port 13 in the oil circuit block 4 after passing through the first solenoid reversing valve 1, and the second oil return port 13 is connected to the oil tank, thereby realizing slow retreat.

[0033] The electric upsetting machine top forging hydraulic system in this embodiment can realize fast forward, fast reverse, slow forward and slow reverse, making the electric upsetting machine smoother and more efficient in the entire electric upsetting process.

[0034] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] This specification uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. An electric upsetting machine upsetting hydraulic system, characterized in that: It includes a first electromagnetic reversing valve, a second electromagnetic reversing valve, an electromagnetic overflow valve, an oil circuit block, a proportional overflow valve, a double hydraulic pump, a motor and a top forging hydraulic cylinder; the oil circuit block is provided with a first pressure oil port, a first return oil port, a second pressure oil port, a second return oil port, a first interface and a second interface; the double hydraulic pump and the output shaft of the motor are drivingly connected, the large flow output port of the double hydraulic pump is connected to the first pressure oil port, and the small flow output port of the double hydraulic pump is connected to the second pressure oil port; the first interface and the second interface are respectively connected to the rodless chamber and the rod chamber of the top forging hydraulic cylinder; the first electromagnetic reversing valve, the second electromagnetic reversing valve, the electromagnetic overflow valve and the proportional overflow valve are all arranged on the oil circuit block; the electromagnetic overflow valve and the second electromagnetic reversing valve are arranged in the The first pressure oil port is connected with the first interface and the second interface; the electromagnetic overflow valve is connected with the first pressure oil port through the oil circuit in the oil circuit block, the electromagnetic overflow valve is connected with the inlet end of the second electromagnetic reversing valve through the oil circuit in the oil circuit block, and the second electromagnetic reversing valve is connected with the first interface and the second interface through the oil circuit in the oil circuit block; the first electromagnetic reversing valve and the proportional overflow valve are arranged at the second pressure oil port and are connected with the first interface and the second interface; the proportional overflow valve is connected with the second pressure oil port through the oil circuit in the oil circuit block, the proportional overflow valve is connected with the inlet end of the first electromagnetic reversing valve through the oil circuit in the oil circuit block, and the first electromagnetic reversing valve is connected with the first interface and the second interface through the oil circuit in the oil circuit block.

2. The electric upsetting machine hydraulic system according to claim 1, characterized in that: A second pressure gauge is provided on the oil circuit in the oil circuit block for connecting the electromagnetic overflow valve and the second electromagnetic reversing valve.

3. The electric upsetting machine hydraulic system according to claim 1, characterized in that: A first pressure gauge is provided on the oil circuit in the oil circuit block for connecting the first electromagnetic reversing valve and the proportional relief valve.

4. The electric upsetting machine hydraulic system according to claim 1, characterized in that: A tubular one-way valve is respectively arranged on the small flow output port and the large flow output port of the double hydraulic pump.

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