Bearing hydraulic machine

Abstract

The utility model relates to the technical field of hydraulic machines, and discloses a bearing hydraulic machine which comprises a hydraulic cylinder, the left side of the top of the hydraulic cylinder is fixedly connected with an oil tank, the left side of the top of the oil tank is fixedly connected with a filter, the left side of the filter is rotationally connected with a reversing valve, and the left side of the reversing valve is provided with a manual pump. A one-way valve is arranged on the front side of the manual pump, the right side of the filter communicates with a conveying pipe, the rear side of the oil tank is fixedly connected with a hydraulic cylinder, and the rear side of the filter communicates with a control valve block. When the hydraulic cylinder extends out, hydraulic oil is matched with the hydraulic cylinder to enter the hydraulic system through the manual pump, an oil way is guaranteed to be smooth, a reversing valve is prevented from being blocked, meanwhile, the manual pump is matched with a press system, the hydraulic system can effectively operate, meanwhile, it is guaranteed that the pressure is not higher than the ultimate pressure of the hydraulic system, and the pressure limit is effectively avoided being exceeded; and other hydraulic elements are damaged.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press technology, and in particular to bearing hydraulic press. Background Technology

[0002] Currently, most traditional hydraulic cylinders and power valve blocks in presses on the market are connected using flexible hoses. Compared to rigid pipe connections of the same specifications, flexible hose connections do not have high pressure resistance and cannot withstand large oil pressures. With a fixed piston size in the hydraulic cylinder, the pressure that can be supplied to the hydraulic cylinder is limited. If higher pressure is required, the cylinder diameter needs to be increased to meet the demand. Flexible hose connections also have the problem of poor sealing compared to rigid pipes, making them more prone to oil seepage and leakage during long-term use. In addition, hoses will age over time and must be replaced on schedule, which also reduces their durability. Furthermore, there are minimum bending radius requirements for hoses installed between two joints that are not on the same axis. If the radius is too small, the hose will not function properly. They also have poor corrosion resistance, and the inside of the hose is not smooth enough, making it susceptible to the accumulation of impurities and corrosion over time.

[0003] The press's stroke is determined by the hydraulic cylinder, and it can only be used on workpieces where the bearing length is shorter than the cylinder's stroke. For greater versatility, a larger stroke hydraulic cylinder is required. The press is primarily vertical, with a hydraulic cylinder at the top. For heavier workpieces, a crane or other lifting equipment is needed to place them on the hydraulic platform. However, the lifting ropes interfere with the top hydraulic cylinder, making it impossible to place heavier workpieces on the platform for operation. Traditional presses have small filter areas and low filter density, allowing large particles to enter the hydraulic system. This can cause blockages in the narrowest flow channels, such as directional valves, preventing normal operation. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a bearing hydraulic press, which aims to improve the problem that the filter area and filtration density of traditional presses in the prior art are small, which leads to some large particles of impurities entering the hydraulic system and causing blockages at the narrowest part of the hydraulic system, such as the reversing valve, thus preventing normal operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bearing hydraulic press, including a hydraulic cylinder, an oil tank fixedly connected to the top left side of the hydraulic cylinder, a filter fixedly connected to the top left side of the oil tank, a directional valve rotatably connected to the left side of the filter, a manual pump arranged to the left side of the directional valve, a check valve arranged in front of the manual pump, a delivery pipe connected to the right side of the filter, a hydraulic cylinder fixedly connected to the rear side of the oil tank, a control valve block connected to the rear side of the filter, an overflow valve connected to the right side of the control valve block, and a circular knob rotatably connected to the top front side of the oil tank.

[0006] As a further description of the above technical solution:

[0007] A circular plate is fixedly connected to the right end of the hydraulic cylinder.

[0008] As a further description of the above technical solution:

[0009] The top left and right sides of the hydraulic cylinder are fixedly connected to long plates.

[0010] As a further description of the above technical solution:

[0011] An inclined plate is fixedly connected to the opposite side of each of the two long plates.

[0012] As a further description of the above technical solution:

[0013] An extension rod is fixedly connected to the rear side of the long plate on the right.

[0014] As a further description of the above technical solution:

[0015] A manual pump handle is fixedly connected to the top right side of the long plate described on the right.

[0016] As a further description of the above technical solution:

[0017] The bottom of the hydraulic cylinder is fixedly connected to a support leg.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, when the hydraulic cylinder extends, hydraulic oil enters the hydraulic system through a manual pump. Then, it passes through a check valve, a filter, and the second position of the directional valve to reach the rodless chamber of the hydraulic cylinder. This achieves the use of a filter with a large filtration area and high filtration density, ensuring that the size of the unfiltered impurities is smaller than the flow channel diameter of the directional valve, ensuring smooth oil flow and preventing blockage of the directional valve. At the same time, the manual pump equipped with the press system can ensure that the hydraulic system operates effectively while ensuring that the pressure does not exceed the limit pressure of the hydraulic system, effectively avoiding exceeding the pressure limit and damaging other hydraulic components. Attached Figure Description

[0020] Figure 1 This is a front perspective view of the bearing hydraulic press proposed in this utility model;

[0021] Figure 2 This is a partial structural diagram of the bearing hydraulic press proposed in this utility model;

[0022] Figure 3 This is a partial structural diagram of the bearing hydraulic press proposed in this utility model;

[0023] Figure 4 This is a partial structural diagram of the bearing hydraulic press proposed in this utility model;

[0024] Figure 5 This is a partial structural schematic diagram of the bearing hydraulic press proposed in this utility model.

[0025] Legend:

[0026] 1. Hydraulic cylinder; 2. Check valve; 3. Filter; 4. Circular knob; 5. Manual pump; 6. Delivery pipe; 7. Directional valve; 8. Inclined plate; 9. Oil tank; 10. Circular plate; 11. Extension rod; 12. Manual pump handle; 13. Long plate; 14. Outrigger; 15. Control valve block; 16. Relief valve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides a bearing hydraulic press, including a hydraulic cylinder 1, an oil tank 9 fixedly connected to the top left side of the hydraulic cylinder 1, a filter 3 fixedly connected to the top left side of the oil tank 9, a reversing valve 7 rotatably connected to the left side of the filter 3, a manual pump 5 arranged to the left side of the reversing valve 7, a check valve 2 arranged in front of the manual pump 5, a conveying pipe 6 connected to the right side of the filter 3, a hydraulic cylinder 1 fixedly connected to the rear side of the oil tank 9, a control valve block 15 connected to the rear side of the filter 3, an overflow valve 16 connected to the right side of the control valve block 15, and a circular knob 4 rotatably connected to the top front side of the oil tank 9.

[0029] Specifically, a filter 3 is fixedly connected to the top left side of the oil tank 9. The filter 3 is indispensable in the hydraulic system. It uses filter element material. The right side of the filter 3 is connected to a one-way valve 2. Then, in conjunction with the hydraulic cylinder 1, it is like a hydraulic system. It only allows hydraulic oil to flow in one direction and prevents reverse flow. When hydraulic oil flows out of the filter 3, it allows the hydraulic oil to pass smoothly, and when the hydraulic oil tries to flow in the opposite direction, it prevents the hydraulic oil from flowing back.

[0030] Please see the appendix Figure 3 - Appendix Figure 5 The top left and right sides of the hydraulic cylinder 1 are fixedly connected with long plates 13, the right end of the hydraulic cylinder 1 is fixedly connected with a circular plate 10, the two long plates 13 are fixedly connected with inclined plates 8 on the opposite sides, the rear side of the right long plate 13 is fixedly connected with an extension rod 11, the top right side of the right long plate 13 is fixedly connected with a manual pump handle 12, and the bottom of the hydraulic cylinder 1 is fixedly connected with a support leg 14.

[0031] Specifically, long plates 13 are fixedly connected to the top left and right sides of the hydraulic cylinder 1. These two long plates 13 not only reinforce the hydraulic cylinder 1 in terms of structure, but also have inclined plates 8 connected to the long plates 13 at a certain angle. This inclined structure not only increases the stability of the entire support system, but also has an extension rod 11 fixedly connected to the right long plate 13. The circular plate 10 is connected to the right end of the hydraulic cylinder 1 through precision machining and assembly processes to ensure that the concentricity and perpendicularity between the two meet the requirements.

[0032] Working principle: When hydraulic cylinder 1 extends, hydraulic oil enters the hydraulic system through directional valve 7, then passes through check valve 2, filter 3, and the second position of directional valve 7, reaching the rodless chamber of hydraulic cylinder 1. This causes the hydraulic rod to extend outward, pushing the pressure plate forward. Simultaneously, the hydraulic oil in the rod chamber is forced out, returning to the oil tank 9 through the second position of directional valve 7 and delivery pipe 6. The large filtration area and high filtration density ensure that the size of unfiltered impurities is smaller than the flow channel diameter of directional valve 7, ensuring smooth oil flow and preventing blockage of directional valve 7. Furthermore, the press system is equipped with relief valve 16, which ensures that the hydraulic system operates effectively while maintaining the pressure within the system's limit pressure, effectively preventing damage to other hydraulic components from exceeding the pressure limit.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bearing hydraulic press comprising a hydraulic cylinder (1), characterized in that: The top left side of hydraulic cylinder (1) is fixedly connected with oil tank (9), the top left side of oil tank (9) is fixedly connected with filter (3), the left side of filter (3) is rotatably connected with reversing valve (7), the left side of reversing valve (7) is provided with hand pump (5), the front side of hand pump (5) is provided with check valve (2), the right side of filter (3) is communicated with delivery pipe (6), the rear side of oil tank (9) is fixedly connected with hydraulic cylinder (1), the rear side of filter (3) is communicated with control valve block (15), the right side of control valve block (15) is communicated with overflow valve (16), the top front side of oil tank (9) is rotatably connected with round knob (4).

2. The bearing hydraulic machine of claim 1, wherein: The right end of hydraulic cylinder (1) is fixedly connected with circular plate (10).

3. The bearing hydraulic machine of claim 1, wherein: The top left and right sides of hydraulic cylinder (1) are fixedly connected with long plate (13).

4. The bearing hydraulic machine of claim 3, wherein: The sides away from each other of two long plates (13) are fixedly connected with inclined plates (8).

5. The bearing hydraulic machine of claim 3, wherein: The rear side of right long plate (13) is fixedly connected with lengthened rod (11).

6. The bearing hydraulic machine of claim 3, wherein: The right top of right long plate (13) is fixedly connected with hand pump handle (12).

7. The bearing hydraulic machine of claim 1, wherein: The bottom of hydraulic cylinder (1) is fixedly connected with supporting leg (14).

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