Hydraulic buffer pressure stabilizing device

Abstract

The utility model discloses a hydraulic buffer pressure stabilizing device, and relates to the technical field of hydraulic buffer equipment. The hydraulic system comprises an oil cylinder assembly used for power output, and further comprises an oil supply assembly, a small oil cylinder and an air cylinder, the oil supply assembly is used for providing power media for the oil cylinder assembly, and an oil way of the oil cylinder assembly is communicated with an oil way of the small oil cylinder. The piston rod of the air cylinder is extruded through the output end of the small oil cylinder, suddenly-increased pressure is absorbed through the compressibility of gas to balance the pressure in the oil cylinder assembly, meanwhile, when oil in the oil cylinder assembly leaks, oil in the small oil cylinder can flow into the oil cylinder assembly under pushing of the air cylinder, and therefore the oil cylinder assembly is prevented from leaking. By means of the arrangement, the pressure in the oil cylinder assembly can be kept stable all the time, and therefore when the oil cylinder assembly is used, equipment and products cannot be damaged due to large pressure fluctuation.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic buffer equipment, and more specifically, it relates to a hydraulic buffer pressure stabilizing device. Background Technology

[0002] In various processing and electrical equipment, hydraulic systems are often required to provide stable and reliable set pressures. For example, in the chain tensioning system of a film production line's cross-stretching machine, instability in the hydraulic chain tensioning system can lead to problems such as film misalignment, clipping, and film breakage. To improve the stability of the hydraulic system and enhance the quality of film products, it is necessary to buffer and stabilize the pressure provided by the hydraulic system.

[0003] In the prior art, buffering mechanisms typically only have a buffering function, mainly used to absorb and reduce the impact or vibration generated during equipment operation to prevent damage to the equipment due to instantaneous impact. Such buffering mechanisms often lack pressure stabilization function and cannot effectively cope with pressure fluctuations in the system. When the pressure fluctuations in the system are too large, the buffering mechanism cannot adjust and stabilize the pressure in time, resulting in significant changes in system pressure. Such pressure fluctuations may have an adverse effect on the equipment itself and the products it produces.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a hydraulic buffer pressure stabilizing device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a hydraulic buffer pressure stabilizing device, comprising a cylinder assembly for power output, and further comprising an oil supply component, a small cylinder, and a pneumatic cylinder. The oil supply component provides a power medium to the cylinder assembly. The oil circuit of the cylinder assembly is connected to the oil circuit of the small cylinder. When the power medium provided by the oil supply component reaches a set pressure threshold in the cylinder assembly and the small cylinder, the output end of the small cylinder squeezes the piston rod of the pneumatic cylinder, compressing the air in the pneumatic cylinder. When the pressure in the cylinder assembly is equal to the pressure of the compressed air in the pneumatic cylinder, the output of the power medium by the oil supply component is stopped.

[0008] Furthermore, the cylinder assembly includes cylinder one and cylinder two, and the rodless chambers of cylinder one and cylinder two are connected to connecting pipes. A one-way valve, an oil pressure regulating valve, an electromagnetic pressure relief valve, and a pressure gauge are installed on the connecting pipes.

[0009] Further, the oil supply assembly comprises an oil supply pipeline, the oil supply pipeline is connected with the two connecting pipelines, and the oil supply pipeline is connected with the oil tank.

[0010] Further, the rodless cavity of the small oil cylinder is connected with a parallel pipeline, the parallel pipeline is connected with the two connecting pipelines.

[0011] Further, the piston rod of the cylinder is connected with the output end of the small oil cylinder, a pressure reducing valve is arranged at the rodless cavity of the cylinder, and two limit switches are arranged on the cylinder.

[0012] Further, the cylinder is arranged on one side of the support and is fixedly arranged on the support, the output end of the small oil cylinder is rotatably connected with the pin seat, and the small oil cylinder is arranged on one side of the support.

[0013] Further, the support is fixedly arranged on one side of the support, and the piston rod of the cylinder and the output end of the small oil cylinder are arranged in the protective cover.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1. The utility model discloses an oil supply assembly is used for transporting oil to the inside of the oil cylinder assembly and the small oil cylinder, when the pressure in the oil cylinder assembly increases, the output end of the small oil cylinder extrudes the piston rod of the cylinder, and the compressibility of the gas is used to absorb the suddenly increased pressure to balance the pressure in the oil cylinder assembly, and when the oil in the oil cylinder assembly leaks, the oil in the small oil cylinder can flow into the oil cylinder assembly under the pushing of the cylinder, so that the pressure in the oil cylinder assembly can be kept stable, and the equipment and products are not damaged due to the large pressure fluctuation when the oil cylinder assembly is used.

[0016] 2. The utility model discloses two limit switches and oil pumps are electrically connected together, when the output end of the small oil cylinder pushes the piston rod of the cylinder, when the pressure in the connecting pipeline reaches a predetermined value, one of the limit switches is closed and the oil pump stops working, when the oil in the small oil cylinder is insufficient, the cylinder triggers another limit switch, so that another limit switch controls the oil pump to work, and the oil tank starts to supply oil to the inside of the connecting pipeline, so that the oil tank can automatically supplement the oil, so that the device can reach the stable pressure effect during operation, and the energy-saving effect can also be achieved.

[0017] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the utility model, the following will briefly introduce the drawings needed to be used in the description of the embodiments, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 It is the pipeline connection structure schematic view of the utility model;

[0020] Figure 2 It is the oil cylinder assembly structure schematic view of the utility model;

[0021] Figure 3 It is the protective cover structure schematic view of the utility model;

[0022] Figure 4 It is the pressure stabilizing device structure schematic view of the utility model.

[0023] In the drawings, the component list represented by each sign is as follows:

[0024] 1, oil cylinder assembly; 101, oil cylinder one; 102, oil cylinder two; 103, connecting pipeline; 104, check valve; 105, oil pressure regulating valve; 106, electromagnetic pressure relief valve; 107, pressure gauge; 2, oil supply assembly; 201, oil supply pipeline; 3, small oil cylinder; 4, air cylinder; 5, parallel pipeline; 6, pressure reducing valve; 7, limit switch; 8, support; 9, pin seat; 10, protective cover. DETAILED DESCRIPTION

[0025] The following will combine the drawings in the embodiments of the utility model, and the technical solutions in the embodiments of the utility model are described clearly and completely, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the utility model protection.

[0026] In the description of the utility model, it is understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0027] Please refer to Figures 1-4As shown, the utility model is a kind of hydraulic buffer pressure stabilizing device, including oil cylinder assembly 1, the oil cylinder assembly 1 is used to power output, still including oil supply component 2, small oil cylinder 3, cylinder 4, wherein the oil supply component 2 is used to provide power medium for the oil cylinder assembly 1, the oil circuit of the oil cylinder assembly 1 and the oil circuit of small oil cylinder 3 are communicated, when the power medium provided by the oil supply component 2 reaches the set pressure threshold in the oil cylinder assembly 1 and small oil cylinder 3, the output end of the small oil cylinder 3 extrudes the piston rod of the cylinder 4, and the air in the cylinder 4 is compressed, when the pressure in the oil cylinder assembly 1 is equal to the pressure of compressed air in the cylinder 4, the output of the power medium of the oil supply component 2 is stopped.

[0028] Oil supply component 2 provides hydraulic pressure for oil cylinder assembly 1 and small oil cylinder 3, when the hydraulic pressure inside oil cylinder assembly 1 and small oil cylinder 3 reaches the set pressure threshold, the output end of small oil cylinder 3 extrudes the piston rod of cylinder 4, when the hydraulic pressure inside oil cylinder assembly 1 and small oil cylinder 3 reaches balance with the air pressure inside cylinder 4, oil supply component 2 stops supplying oil;When oil cylinder assembly 1 vibrates and causes internal pressure to increase, the output end of small oil cylinder 3 extrudes the piston rod of cylinder 4, and uses the compressibility of gas to absorb the sudden increase in pressure to balance the pressure inside oil cylinder assembly 1, when a small amount of oil leaks inside oil cylinder assembly 1, the piston rod of cylinder 4 pushes the oil inside small oil cylinder 3, and the oil of small oil cylinder 3 is replenished to the hydraulic circuit to ensure that the pressure does not change.

[0029] Through oil supply component 2, oil is transported to the inside of oil cylinder assembly 1 and small oil cylinder 3, when the internal pressure of oil cylinder assembly 1 increases, the output end of small oil cylinder 3 extrudes the piston rod of cylinder 4, and uses the compressibility of gas to absorb the sudden increase in pressure to balance the pressure inside oil cylinder assembly 1, and when oil leaks inside oil cylinder assembly 1, the oil inside small oil cylinder 3 can flow to the inside of oil cylinder assembly 1 under the push of cylinder 4, the above setting makes the pressure inside oil cylinder assembly 1 can always keep stable, so that when using oil cylinder assembly 1, the equipment and products will not be damaged due to large pressure fluctuation.

[0030] In one embodiment, for the above-mentioned oil cylinder assembly 1, the oil cylinder assembly 1 includes oil cylinder one 101 and oil cylinder two 102, the rodless cavity of the oil cylinder one 101 and the oil cylinder two 102 is connected with connecting pipeline 103, and the connecting pipeline 103 is installed with one-way valve 104, oil pressure regulating valve 105, electromagnetic pressure relief valve 106 and pressure gauge 107.

[0031] The oil supply assembly 2 can transport oil to the interiors of the oil cylinder one 101 and the oil cylinder two 102 through two connecting pipelines 103, so that the oil cylinder one 101 and the oil cylinder two 102 can normally work; the oil pressure in the connecting pipelines 103 can be adjusted according to actual conditions through the oil pressure adjusting valve 105; the pressure gauge 107 can display the pressure in the connecting pipelines 103, so that the operator can monitor the pressure in the connecting pipelines 103 in real time; when the oil cylinder one 101 and the oil cylinder two 102 need to be repaired, the hydraulic pressure in the connecting pipelines 103 can be discharged through the electromagnetic pressure relief valve 106, so that it is more convenient to repair.

[0032] In one embodiment, for the above-mentioned oil supply assembly 2, the oil supply assembly 2 comprises an oil supply pipeline 201, the oil supply pipeline 201 is connected with two connecting pipelines 103, and the oil supply pipeline 201 is connected with an oil tank.

[0033] The oil supply pipeline 201 is connected with two connecting pipelines 103 through a tee pipe, and when oil supply is performed, the oil supply pipeline 201 is connected with the oil tank through an oil pump, and when oil supply is performed, the oil pump extracts oil in the oil tank, and the extracted oil directly flows into the interiors of two connecting pipelines 103 under the guidance of the oil supply pipeline 201.

[0034] In one embodiment, for the above-mentioned small oil cylinder 3, the rodless cavity of the small oil cylinder 3 is connected with a parallel pipeline 5, and the parallel pipeline 5 is connected with two connecting pipelines 103 in parallel.

[0035] The oil in the connecting pipeline 103 flows into the interior of the small oil cylinder 3 through the parallel pipeline 5, and since the parallel pipeline 5 is connected with two connecting pipelines 103, the pressures in the rodless cavities of the oil cylinder one 101, the oil cylinder two 102 and the small oil cylinder 3 can be kept consistent.

[0036] In one embodiment, for the above-mentioned cylinder 4, the piston rod of the cylinder 4 is connected with the output end of the small oil cylinder 3, a pressure relief valve 6 is installed in the rodless cavity of the cylinder 4, and two limit switches 7 are arranged on the cylinder 4.

[0037] Two limit switches 7 are electrically connected with the oil pump, and the pressure of the compressed air in the cylinder 4 can be set through the pressure reducing valve 6. When the oil is supplied, the output end of the small oil cylinder 3 pushes the piston rod of the cylinder 4. When the pressure in the connecting pipeline 103 reaches a predetermined value, one of the limit switches 7 closes the oil pump and stops the oil pump from working. When the oil in the small oil cylinder 3 flows into the connecting pipeline 103 under the pushing of the cylinder 4, the other limit switch 7 controls the oil pump to work, and the oil tank starts to supply oil to the connecting pipeline 103. The above setting enables the oil tank to automatically supplement the oil, thereby ensuring that the device can achieve stable pressure during operation and achieve energy-saving effect.

[0038] In one embodiment, for the above-mentioned cylinder 4, a support 8 is arranged on one side of the cylinder 4, the cylinder 4 is fixedly installed on the support 8, a pin seat 9 is fixedly connected with the piston rod of the cylinder 4, and the output end of the small oil cylinder 3 is rotatably connected with the pin seat 9. The small oil cylinder 3 is arranged on one side of the support 8.

[0039] The cylinder 4 can push the output end of the small oil cylinder 3 through the pin seat 9, so that the oil in the small oil cylinder 3 can be supplemented into the connecting pipeline 103. The support 8 can support the small oil cylinder 3 and the cylinder 4, so that the overall stability of the two when working can be guaranteed.

[0040] In one embodiment, for the above-mentioned support 8, a protective cover 10 is fixedly installed on one side of the support 8, and the piston rod of the cylinder 4 and the output end of the small oil cylinder 3 are both in the protective cover 10.

[0041] The protective cover 10 can shield the connection between the cylinder 4 and the small oil cylinder 3, so that when the device is in use, external impurities will not accumulate on the surface of the piston rod of the cylinder 4 and the output end of the small oil cylinder 3.

[0042] Through the technical scheme, 1, the oil is transported to the inside of the oil cylinder assembly 1 and the small oil cylinder 3 through the oil supply assembly 2, when the pressure in the inside of the oil cylinder assembly 1 increases, the output end of the small oil cylinder 3 extrudes the piston rod of the cylinder 4, and the compressibility of the gas is used to absorb the suddenly increased pressure to balance the pressure in the inside of the oil cylinder assembly 1, and when the oil in the inside of the oil cylinder assembly 1 leaks, the oil in the inside of the small oil cylinder 3 can flow to the inside of the oil cylinder assembly 1 under the pushing of the cylinder 4, the above-mentioned arrangement makes the pressure in the inside of the oil cylinder assembly 1 can always keep stable, so that when the oil cylinder assembly 1 is used, the equipment and products will not be damaged due to the large pressure fluctuation; 2, by electrically connecting the two limit switches 7 with the oil pump together, when the oil is supplied, the output end of the small oil cylinder 3 pushes the piston rod of the cylinder 4, when the pressure in the connecting pipeline 103 reaches a predetermined value, one of the limit switches 7 closes the oil pump and makes the oil pump stop working; when the oil in the inside of the small oil cylinder 3 is insufficient, the cylinder 4 triggers the other limit switch 7, so that the other limit switch 7 controls the oil pump to work, and the oil tank starts to supply oil to the inside of the connecting pipeline 103, the above-mentioned arrangement makes the oil tank can automatically supplement the oil, so as to ensure that the device can reach the effect of stable pressure during operation, and also can reach the effect of energy saving.

[0043] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above disclosed preferred embodiments of the utility model are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is limited to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and describes these embodiments in order to better explain the principles and practical application of the utility model, so that the person skilled in the art can well understand and use the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A hydraulic accumulator pressure stabilizing device comprising a cylinder assembly (1) for power output, characterized in that, Also include the oil supply assembly (2), small oil cylinder (3), cylinder (4), wherein the oil supply assembly (2) for the oil cylinder assembly (1) to provide power medium, the oil cylinder assembly (1) oil circuit and small oil cylinder (3) oil circuit communication, when the oil supply assembly (2) provided by the power medium in the oil cylinder assembly (1) and small oil cylinder (3) reaches the set pressure threshold, the output end of the small oil cylinder (3) extrusion cylinder (4) piston rod, the air in the cylinder (4) is compressed, when the pressure in the oil cylinder assembly (1) and the pressure of the compressed air in the cylinder (4) is equal, stop the output of the power medium of the oil supply assembly (2).

2. The hydraulic accumulator pressure stabilizing device according to claim 1, wherein The oil cylinder assembly (1) includes oil cylinder one (101) and oil cylinder two (102), the rodless cavity of the oil cylinder one (101) and the oil cylinder two (102) is connected with the connecting pipeline (103), the connecting pipeline (103) is provided with a one-way valve (104), an oil pressure regulating valve (105), an electromagnetic pressure relief valve (106) and a pressure gauge (107).

3. The hydraulic accumulator pressure stabilizing device according to claim 2, wherein The oil supply assembly (2) includes an oil supply pipeline (201), the oil supply pipeline (201) is connected with two connecting pipelines (103), and the oil supply pipeline (201) is connected with an oil tank.

4. The hydraulic accumulator pressure stabilizing device according to claim 3, wherein The rodless cavity of the small oil cylinder (3) is connected with a parallel pipeline (5), and the parallel pipeline (5) is connected with two connecting pipelines (103) in parallel.

5. The hydraulic accumulator pressure stabilizing device according to claim 4, wherein The piston rod of the cylinder (4) is connected with the output end of the small oil cylinder (3), the rodless cavity of the cylinder (4) is provided with a pressure reducing valve (6), and the cylinder (4) is provided with two limit switches (7).

6. The hydraulic accumulator pressure stabilizing device according to claim 5, wherein One side of the cylinder (4) is provided with a support (8), the cylinder (4) is fixedly installed on the support (8), the piston rod of the cylinder (4) is fixedly connected with a pin seat (9), the output end of the small oil cylinder (3) is rotatably connected with the pin seat (9), and the small oil cylinder (3) is arranged on one side of the support (8).

7. The hydraulic accumulator pressure stabilizing device according to claim 6, wherein One side of the support (8) is fixedly installed with a protective cover (10), and the piston rod of the cylinder (4) and the output end of the small oil cylinder (3) are located in the protective cover (10).

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