Hydraulic machine with balance cylinder
By adding balance cylinder counterweight and modular hydraulic accumulator group design on the hydraulic press, the problems of high energy consumption and large vibration of the return cylinder of the traditional hydraulic press are solved, and the capacity and energy consumption of the hydraulic accumulator group are reduced, which improves the Equipment stability and safety.
Patent Information
- Application Number
- CN202420132626.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The return cylinder of traditional large composite hydraulic presses has problems such as large capacity, high heating and energy consumption, high vibration and high production cost. The hydraulic system has severe heat, high energy consumption and high oil leakage risk in pipelines. Large energy loss.
Design a hydraulic press with a balance cylinder, add the counterweight of two balance cylinders to offset the weight of moving parts, and adopt the modular design of hydraulic accumulator group to reduce the capacity and return cylinder size of hydraulic accumulator group, and pass the balance cylinder The accumulator group drives the return cylinder, reducing the energy consumption and heating of the hydraulic system, and improving equipment stability and safety.
Effectively reduce the capacity of hydraulic accumulator units, reduce heat generation and energy consumption, reduce vibration, improve equipment stability and safety, and simplify assembly and maintenance processes.
Smart Images
Figure CN222185260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic presses, in particular to a hydraulic press with a balancing cylinder. Background Art
[0002] In order to meet the requirement of fast return, the return cylinder of the traditional large composite hydraulic press has a hydraulic accumulator group in the hydraulic system. The accumulator group is installed on the top platform of the hydraulic press, and the return cylinder is installed on the workbench. The traditional hydraulic accumulator group has the defects of large capacity, high heat and energy consumption, large vibration, and high production cost. The return stage of the large composite press needs to overcome the weight of the entire moving parts. The faster the movement speed, the greater the flow required by the return cylinder, which makes the selection of the hydraulic accumulator group larger. During loading and unloading, the motor pump group in the hydraulic system keeps working to fill the hydraulic accumulator group with fluid to meet the use requirements. The whole hydraulic system is seriously heated and has high energy consumption. Because the hydraulic accumulator group is far away from the return cylinder on the workbench, the pipeline connection is relatively long, the press vibrates greatly at the moment of hydraulic accumulator release, the risk of pipeline oil leakage is higher, and the pipeline energy loss is large and the production cost is high. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a hydraulic press with a balancing cylinder, two balancing cylinder counterweights are added to the workbench to offset the weight of most moving parts, and a modular design of a hydraulic accumulator group is adopted to reduce the capacity of the hydraulic accumulator group and the size of the return cylinder.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a hydraulic press with a balancing cylinder, comprising an upper platform, a hydraulic power system is fixedly arranged on the upper platform, the hydraulic power system comprises an oil tank, a plurality of columns are vertically fixed under the upper platform, a slider assembly is movably fixed between the columns, the slider assembly is driven by the hydraulic power system, the other ends of the plurality of columns are vertically fixed on the workbench, a plurality of return cylinders and a balancing cylinder are arranged between the workbench and the slider assembly, the balancing cylinder and the return cylinder are arranged diagonally on the workbench, the return cylinder is driven by the hydraulic power system, and the balancing cylinder is driven by a balancing cylinder accumulator group, and the balancing cylinder accumulator group is fixedly arranged on one side of the workbench.
[0005] Furthermore, there are multiple balance cylinder accumulator groups, and adjacent balance cylinder accumulator groups are connected by pipelines.
[0006] Furthermore, the balancing cylinder accumulator group includes an oil separator block fixedly arranged on one side of the workbench, and a plurality of bladder accumulators are fixedly arranged on the oil separator block. Adjacent oil separator blocks are connected by pipelines. The oil separator block is connected to one end of the balancing cylinder pipeline, and the other end of the balancing cylinder pipeline is connected to the input end of the balancing cylinder.
[0007] Furthermore, a pressure measuring pipeline is arranged on any of the oil separation blocks, and a pressure sensor and a pressure measuring joint are arranged on the pressure measuring pipeline.
[0008] Furthermore, a filling valve group is fixedly arranged on any of the oil separation blocks, a filling pipeline and a pressure relief pipeline are arranged on the filling valve group, and the other ends of the filling pipeline and the pressure relief pipeline are both connected to the oil tank.
[0009] Furthermore, a first pressure safety valve and an electromagnetic ball valve are arranged on the pressure relief pipeline, the input ends of the first pressure safety valve and the electromagnetic ball valve are both connected to the oil distribution block, and the output ends of the first pressure safety valve and the electromagnetic ball valve are both connected to the oil tank.
[0010] Furthermore, a one-way valve and an electromagnetic reversing valve are sequentially arranged on the pressure relief pipeline, one end of the electromagnetic reversing valve is connected to the one-way valve input end, and the other end is connected to the oil tank;
[0011] The liquid filling pipeline is connected to the electromagnetic reversing valve, and a pressure sensor and a pressure measuring joint are also arranged on the liquid filling pipeline.
[0012] Furthermore, a unloading pipeline is provided on the filling pipeline, and a second pressure safety valve and an electromagnetic unloading valve are provided on the unloading pipeline, the output end of the second pressure safety valve and the input end of the electromagnetic unloading valve are connected to the oil tank, and the output end of the electromagnetic unloading valve is connected to the input end of the second pressure safety valve to form a loop.
[0013] Furthermore, a guide rail is fixedly arranged along the height direction of the column, the slider assembly is movably fixed on the guide rail, one end of the return cylinder and the balance cylinder is fixedly connected to the slider assembly, and the other end is fixed on the workbench.
[0014] Furthermore, an escalator is provided, one end of which penetrates and is fixed on the upper platform, and the other end of which extends downward.
[0015] Compared with the prior art, the beneficial effects of the utility model include: through the balancing cylinder accumulator group device installed on the hydraulic press, the capacity of the hydraulic accumulator group can be effectively reduced, the heat generation and energy consumption are greatly reduced, there is no vibration, and the stability and safety of the equipment can be improved; the modular design of the balancing cylinder hydraulic accumulator group can be used in combination with multiple groups, and it is also convenient for assembly and equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:
[0017] Figure 1-2 The overall structure of the hydraulic press with a balancing cylinder is schematically shown;
[0018] Figure 3 The overall structure of the balance cylinder accumulator group is schematically shown;
[0019] Figure 4 The connection of the pressure measuring pipeline, liquid filling pipeline, pressure relief pipeline and unloading pipeline is schematically shown;
[0020] Figure 5 The connection of the pressure relief line is shown schematically;
[0021] Figure 6 The schematic diagram shows the connection of the unloading pipeline.
[0022] Numbers in the figure: 1-upper platform, 2-column, 3-slider assembly, 4-workbench, 5-return cylinder, 6-balance cylinder, 7-balance cylinder accumulator group, 71-bladder accumulator, 72-oil distribution block, 8-pressure measuring pipeline, 9-liquid filling pipeline, 10-pressure relief pipeline, 101-first pressure safety valve, 102-electromagnetic ball valve, 103-check valve, 104-electromagnetic reversing valve, 11-unloading pipeline, 111-second pressure safety valve, 112-electromagnetic unloading valve, 12-escalator. DETAILED DESCRIPTION
[0023] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.
[0024] like Figure 1-2 As shown, a hydraulic press with a balancing cylinder comprises an upper platform 1, on which a hydraulic power system is fixedly arranged, the hydraulic power system comprises an oil tank, an oil cylinder and a motor pump group, the oil tank is arranged on the plane of the platform, the oil cylinder adopts a four-cylinder arrangement, and the four oil cylinders are fixedly arranged in the middle position of the upper platform 1, the oil cylinder is provided with a filling valve and a filling valve suction pipe, the filling valve is connected to the top of the oil cylinder, the filling valve suction pipe is connected to the filling valve, and is connected to the suction port on the oil tank through the filling valve suction pipe, and the motor pump group is a vertical double pump structure and is installed on the upper platform 1.
[0025] A plurality of columns 2 are vertically fixed under the upper platform 1. In some embodiments, the columns 2 include four columns. The slider assembly 3 is movably fixed between the columns 2. A guide rail is fixedly arranged along the height direction of the columns 2. The slider assembly 3 cooperates with the guide rail on the side facing the column 2. In this way, the slider assembly 3 can be driven by a corresponding driving motor to reciprocate along the height direction of the column 2.
[0026] A return cylinder 5 and a balancing cylinder 6 are fixedly arranged between the workbench 4 and the slider assembly 3, and the return cylinder 5 and the balancing cylinder 6 are arranged diagonally on the workbench 4. An example is given below, if the balancing cylinder 6 is arranged close to the return cylinder 5, that is, the return cylinder 5 and the balancing cylinder 6 are arranged side by side on the side of the hydraulic press for support, then the return cylinder 5 and the balancing cylinder 6 are symmetrically arranged on the opposite side of the workbench 4 for support, wherein the balancing cylinder 6 on one side and the return cylinder 5 on the other side are symmetrically arranged based on the collective center of the workbench 4, and the other group of balancing cylinders 6 and return cylinders 5 are also the same. The aforementioned return cylinder 5 is driven by a hydraulic power system, and the balancing cylinder 6 is driven by a balancing cylinder accumulator group 7, and the balancing cylinder accumulator group 7 is fixedly arranged on one side of the workbench 4.
[0027] like Figure 3 As shown, the aforementioned balancing cylinder accumulator group 7 is a plurality of groups, and adjacent balancing cylinder accumulator groups 7 are connected by pipelines. In some embodiments, the number of balancing cylinder accumulator groups 7 is the same as that of balancing cylinders 6, that is, the number of balancing cylinder accumulator groups 7 is two groups, which are named as the first balancing cylinder accumulator group 7 and the second balancing cylinder accumulator group 7, respectively. The aforementioned balancing cylinder accumulator group 7 includes an oil separator 72 fixedly arranged on one side of the workbench 4. The oil separator 72 is fixed on one side of the workbench 4 by a bracket. The oil separator 72 is a hollow rectangular frame. A plurality of bladder accumulators are fixedly arranged on the top of the oil separator 72 along its length direction. Energy device 71, the spacing between adjacent bladder accumulators 71 is the same. In some embodiments, four bladder accumulators 71 are fixedly arranged on the oil dividing block 72 at equal intervals. The bladder accumulator 71 is fixed on the oil dividing block 72 with a flange ring. The oil dividing blocks 72 are connected with pipelines. One of the oil dividing blocks 72 is connected to one end of the pipeline of the balancing cylinder 6, and the other end of the pipeline of the balancing cylinder 6 is connected to the oil delivery port on the balancing cylinder 6. The hydraulic oil contained in the bladder accumulator 71 is input into the balancing cylinder 6 through the oil dividing block 72 and the pipeline of the balancing cylinder 6 to assist the return cylinder 5.
[0028] like Figure 4As shown, a pressure measuring pipeline 8 and a liquid filling valve group are arranged on the oil distribution block 72 of any of the above-mentioned balance cylinder accumulator groups 7, and a pressure sensor and a pressure measuring joint are arranged on the pressure measuring pipeline 8. The pressure sensor arranged here is used to indicate the hydraulic pressure in the bladder accumulator 71. A liquid filling pipeline 9 and a pressure relief pipeline 10 are arranged on the liquid filling valve group, and the other ends of the liquid filling pipeline 9 and the pressure relief pipeline 10 are connected to the oil tank. It is worth noting that in some embodiments, the above-mentioned pressure measuring pipeline 8 and the liquid filling valve group are concentrated on the same oil distribution block 72.
[0029] like Figure 5 As shown, a first pressure safety valve 101 and an electromagnetic ball valve 102 are arranged on the pressure relief pipeline 10. The first pressure safety valve 101 and the electromagnetic ball valve 102, the input ends of the first pressure safety valve 101 and the electromagnetic ball valve 102 are both connected to the oil distribution block 72, and the output ends of the first pressure safety valve 101 and the electromagnetic ball valve 102 are both connected to the oil tank. The first pressure safety valve 101 is arranged on the pressure relief pipeline 10. When the oil pressure in the pressure relief pipeline 10 is too high, the first pressure safety valve 101 is connected. At this time, under the effect of the excessive oil pressure, the hydraulic oil in the pressure relief pipeline 10 can be discharged from the output end of the first pressure safety valve 101 to the oil tank, and the electromagnetic ball valve 102 arranged on the pressure relief pipeline 10 is in a closed state when powered on, so as to ensure the hydraulic pressure in the bladder accumulator 71. When the balance cylinder accumulator group 7 needs to be repaired, the electromagnetic ball valve 102 is adjusted to the power-off state. At this time, the electromagnetic ball valve 102 is connected, and the hydraulic oil in the bladder accumulator 71 can flow into the oil tank through the electromagnetic ball valve 102, ensuring that there is no high pressure in the balance cylinder accumulator group 7. At this time, the corresponding maintenance process can be carried out.
[0030] A one-way valve 103 and an electromagnetic reversing valve 104 are sequentially arranged on the aforementioned pressure relief pipeline 10. The electromagnetic reversing valve 104 is connected to the input end of the one-way valve 103, and the other end is connected to the oil tank. The aforementioned filling pipeline 9 is connected to the electromagnetic reversing valve 104, and the hydraulic oil in the oil tank is input into the bladder accumulator 71 through the filling pipeline 9, the electromagnetic reversing valve 104 and the one-way valve 103 in sequence. A pressure sensor and a pressure measuring joint are also arranged on the aforementioned filling pipeline 9, which are used to indicate the hydraulic oil pressure in the aforementioned filling pipeline 9. It is worth noting that the aforementioned electronic reversing valve is also directly connected to the oil tank. When the electromagnetic reversing valve 104 is energized, the hydraulic oil is sequentially charged into the bladder accumulator 71 through the electromagnetic reversing valve 104 and the one-way valve 103 through the filling pipeline 9. During the filling process, the first pressure safety valve 101 arranged in the pressure relief pipeline 10 can regulate the hydraulic pressure in the bladder accumulator 71 so that the hydraulic pressure therein always meets the set requirements, and monitors the hydraulic pressure therein through the pressure sensor arranged on the oil separator block 72. When the hydraulic pressure in the bladder accumulator 71 reaches the required threshold, the electromagnetic reversing valve 104 is de-energized. At this time, the electromagnetic reversing valve 104 is in a closed state. The hydraulic oil input from the filling pipeline 9 to the oil separator block 72 cannot enter the bladder accumulator 71, and will be discharged through the oil tank connected to the electromagnetic reversing valve 104. The setting of the one-way valve 103 can further prevent the reflux of the hydraulic oil in the bladder accumulator 71.
[0031] like Figure 6As shown, a discharge pipeline 11 is also provided on the filling pipeline 9, and a second pressure safety valve 111 and an electromagnetic discharge valve 112 are provided on the discharge pipeline 11. The output end of the second pressure safety valve 111 and the input end of the electromagnetic discharge valve 112 are connected to the oil tank, and the output end of the electromagnetic discharge valve 112 is connected to the input end of the second pressure safety valve 111 to form a loop. The discharge pipeline 11 is activated during the filling process of the filling pipeline 9. When the bladder accumulator 71 is filled with liquid until the required hydraulic pressure is reached, and the bladder accumulator 71 is continuously filled with liquid, the pressure sensor provided on the oil separator block 72 measures that the pressure in the balance cylinder accumulator group 7 exceeds the threshold value, and a corresponding warning action can be performed. At this time, the electromagnetic reversing valve 104 is closed, so that the hydraulic oil in the filling pipeline 9 cannot continue to enter the bladder accumulator 71, and the excess hydraulic oil in the bladder accumulator 71 can be discharged through the aforementioned pressure relief pipeline 10 and re-circulated into the oil tank. Part of the hydraulic oil continuously input into the filling pipeline 9 flows out through the oil tank connected to the electromagnetic reversing valve 104, and the other part enters the unloading pipeline 11. When the hydraulic pressure in the filling pipeline 9 is too high, the pressure sensor in the filling pipeline 9 issues a corresponding warning, and the second pressure safety valve 111 can be used to complete the discharge of part of the hydraulic oil. The electromagnetic unloading valve 112 can be regarded as a combination of a relief valve and a solenoid valve. The electrical signal enables the electromagnetic unloading valve 112 to complete the unloading. In the case of power failure, the electromagnetic unloading valve 112 can be regarded as a solenoid valve, and the system pressure is zero at this time. When the electromagnetic unloading valve 112 is energized, the electromagnetic unloading valve 112 can be regarded as a relief valve to adjust the safe working pressure in the system. If the pressure exceeds the set pressure of the electromagnetic unloading valve 112, it will automatically overflow to ensure the safety of the working pressure in the system.
[0032] A guide rail is fixedly arranged along the height direction of the column 2, and the slider assembly 3 is movably fixed on the guide rail. One end of the return cylinder 5 and the balance cylinder 6 is fixedly connected to the slider assembly 3, and the other end is fixed on the workbench 4. An escalator 12 is also provided, one end of which is fixed on the upper platform 1 and the other end extends downward, so as to facilitate the inspection and maintenance process of the relevant components arranged on the upper platform 1 by the operator.
[0033] The utility model installs the balance cylinder accumulator group 7 device on the hydraulic press, which can effectively reduce the capacity of the hydraulic accumulator group, greatly reduce the heat generation and energy consumption, and has no vibration, and can improve the stability and safety of the equipment; the modular design of the balance cylinder 6 hydraulic accumulator group can be used in multiple groups for practical use, and is convenient for assembly and equipment maintenance.
[0034] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.
Claims
1. A hydraulic press with a balancing cylinder, comprising an upper platform (1), a hydraulic power system fixedly arranged on the upper platform (1), the hydraulic power system comprising an oil tank, a plurality of columns (2) vertically fixed below the upper platform (1), a slider assembly (3) movably fixed between the columns (2), the slider assembly (3) being driven by the hydraulic power system, the other ends of the plurality of columns (2) being vertically fixed on a workbench (4), characterized in that: A plurality of return cylinders (5) and a balancing cylinder (6) are arranged between the workbench (4) and the slider assembly (3); the balancing cylinder (6) and the return cylinder (5) are arranged diagonally on the workbench (4); the return cylinder (5) is driven by a hydraulic power system, and the balancing cylinder (6) is driven by a balancing cylinder accumulator group (7); and the balancing cylinder accumulator group (7) is fixedly arranged on one side of the workbench (4).
2. The hydraulic press with a balancing cylinder according to claim 1, characterized in that: The balancing cylinder accumulator groups (7) are multiple groups, and adjacent balancing cylinder accumulator groups (7) are connected by pipelines.
3. The hydraulic press with a balancing cylinder according to claim 2, characterized in that: The balancing cylinder accumulator group (7) comprises an oil separator block (72) fixedly arranged on one side of the workbench (4), a plurality of bladder accumulators (71) fixedly arranged on the oil separator block (72), adjacent oil separator blocks (72) are connected by pipelines, the oil separator block (72) is connected to one end of the balancing cylinder (6) pipeline, and the other end of the balancing cylinder (6) pipeline is connected to the input end of the balancing cylinder (6).
4. The hydraulic press with a balancing cylinder according to claim 3, characterized in that: A pressure measuring pipeline (8) is arranged on any one of the oil separation blocks (72), and a pressure sensor and a pressure measuring joint are arranged on the pressure measuring pipeline (8).
5. The hydraulic press with a balancing cylinder according to claim 3, characterized in that: A filling valve group is fixedly arranged on any of the oil separation blocks (72), a filling pipeline (9) and a pressure relief pipeline (10) are arranged on the filling valve group, and the other ends of the filling pipeline (9) and the pressure relief pipeline (10) are both connected to the oil tank.
6. The hydraulic press with a balancing cylinder according to claim 5, characterized in that: A first pressure safety valve (101) and an electromagnetic ball valve (102) are arranged on the pressure relief pipeline (10); the input ends of the first pressure safety valve (101) and the electromagnetic ball valve (102) are both connected to the oil distribution block (72); and the output ends of the first pressure safety valve (101) and the electromagnetic ball valve (102) are both connected to the oil tank.
7. The hydraulic press with a balancing cylinder according to claim 6, characterized in that: A one-way valve (103) and an electromagnetic reversing valve (104) are arranged in sequence on the pressure relief pipeline (10), one end of the electromagnetic reversing valve (104) is connected to the input end of the one-way valve (103), and the other end is connected to the oil tank; The liquid filling pipeline (9) is in communication with the electromagnetic reversing valve (104), and a pressure sensor and a pressure measuring joint are also provided on the liquid filling pipeline (9).
8. The hydraulic press with a balancing cylinder according to claim 7, characterized in that: A unloading pipeline (11) is also provided on the filling pipeline (9), and a second pressure safety valve (111) and an electromagnetic unloading valve (112) are provided on the unloading pipeline (11); the output end of the second pressure safety valve (111) and the input end of the electromagnetic unloading valve (112) are connected to the oil tank, and the output end of the electromagnetic unloading valve (112) is connected to the input end of the second pressure safety valve (111) to form a loop.
9. The hydraulic press with a balancing cylinder according to claim 1, characterized in that: A guide rail is fixedly arranged along the height direction of the column (2), the slider assembly (3) is movably fixed on the guide rail, one end of the return cylinder (5) and the balance cylinder (6) is fixedly connected to the slider assembly (3), and the other end is fixed on the workbench (4).
10. The hydraulic press with a balancing cylinder according to claim 1, characterized in that: An escalator (12) is also provided, one end of the escalator (12) passing through and fixed on the upper platform (1), and the other end extending downward.