Ultrahigh-pressure impact-resistant hydraulic power device

Abstract

The ultrahigh-pressure impact-resistant hydraulic power device comprises a cylinder body, a mounting groove is formed in the right side of the outer arc surface of the cylinder body, a sealing bolt is connected to the upper side of the interior of the mounting groove, an injection hole and a discharge hole are formed in the upper side of the left end of the cylinder body respectively, the discharge hole is communicated with the mounting groove, and the injection hole is located on the lower side of the discharge hole. A piston gland is arranged in an avoiding groove formed in the middle of the right end of the cylinder body, a piston rod is slidably connected into a sliding groove formed in the middle of the left end of the piston gland, connecting grooves are formed in the upper side and the lower side of the left end of the piston rod correspondingly, and threaded nails are connected into the connecting grooves correspondingly. According to the ultrahigh-pressure impact-resistant hydraulic power device, the pressure of the two cavities cannot exceed a rated value, so that the output of the pressure is ensured, the pressure is always in a sealed design pressure range, and the problem that a workpiece is damaged due to the fact that the pressure exceeds the sealed bearing pressure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic transmission equipment, in particular to an ultra-high pressure impact-resistant hydraulic power device. Background Technique

[0002] A load cylinder is a hydraulic component that can generate linear motion based on fluid pressure. Its working principle is similar to that of a piston cylinder, except that the working medium is liquid. The load cylinder is a hydraulic actuator that converts liquid pressure energy into mechanical motion energy and is an important mechanical component, widely used in fields such as mechanical manufacturing, aerospace, and metallurgical industry;

[0003] The load cylinder internally contains a piston and a sealing device, usually a piston ring. When hydraulic oil enters the cylinder from a hydraulic pump, the pressure is transmitted to the piston. Due to the large area of the piston, the hydraulic pressure will generate sufficient force to push the piston outwards, thereby achieving linear motion. This force transmission enables the cylinder to undertake various working tasks, such as lifting heavy objects, pushing equipment, etc.;

[0004] During the operation of the load cylinder, due to the complex actual situation on-site, instantaneous impact pressures exceeding the rated value often occur. Since the compression space of the hydraulic oil is constant, the sudden increase in pressure will lead to high-frequency reciprocation of the cylinder, and the phenomenon of hydraulic oil hammer will also cause damage to components, and there may also be major safety accidents. The force exerted by the cylinder on the workpiece receiving the relative force cannot be guaranteed, often resulting in damage to the segments in contact with the cylinder. For this reason, we propose an ultra-high pressure impact-resistant hydraulic power device. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide an ultra-high pressure impact-resistant hydraulic power device, which can ensure that the pressures in both chambers do not exceed the rated value, thereby ensuring the pressure output and keeping it within the sealed design pressure range, solving the problem of workpiece damage caused by exceeding the sealed bearing pressure, and effectively solving the problems in the background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: a super-high pressure impact-resistant hydraulic power device, including a cylinder block. An installation groove is provided on the right side of the outer arc surface of the cylinder block. A sealing bolt is connected to the upper side inside the installation groove. An injection hole and a discharge hole are respectively provided on the upper side of the left end of the cylinder block. The discharge hole is communicated with the installation groove. The injection hole is located below the discharge hole. A piston gland is arranged in a relief groove opened in the middle of the right end of the cylinder block. A piston rod is slidably connected in a chute provided in the middle of the left end of the piston gland. Connecting grooves are provided on both the upper and lower sides of the left end of the piston rod. Threaded studs are connected inside the connecting grooves, which can ensure that the pressures in both chambers do not exceed the rated value, thereby ensuring the pressure output and keeping it within the sealed design pressure range, and solving the problem of workpiece damage caused by exceeding the sealed bearing pressure.

[0007] Further, it also includes a main chamber safety overflow valve and a secondary chamber safety overflow valve. The main chamber safety overflow valve is slidably connected in a slide hole provided in the middle of the left end of the upper threaded stud, and the secondary chamber safety overflow valve is slidably connected in an avoidance through hole provided in the middle of the right end of the lower threaded stud.

[0008] Further, it also includes a first spring and a second spring. The first spring is arranged between the right end of the lower threaded stud and the left end of the secondary chamber safety overflow valve. The first spring is sleeved outside the left side of the secondary chamber safety overflow valve. The second spring is arranged between the left end of the upper threaded stud and the right end of the main chamber safety overflow valve. The second spring is sleeved outside the right side of the main chamber safety overflow valve. The elastic forces generated by the extension of the first spring and the second spring can drive the main chamber safety overflow valve or the secondary chamber safety overflow valve to move back to its original position.

[0009] Further, it also includes leather gaskets. The leather gaskets are respectively arranged on the left side of the outer arc surface of the main chamber safety overflow valve and the right side of the outer arc surface of the secondary chamber safety overflow valve. The upper leather gasket contacts the left wall of the upper connecting groove, and the lower leather gasket contacts the right wall of the lower connecting groove. The leather gaskets can increase the sealing performance between the main chamber safety overflow valve or the secondary chamber safety overflow valve and the connecting groove.

[0010] Further, it also includes an O-ring seal and a high-pressure sealing spacer ring. The O-ring seal and the high-pressure sealing spacer ring are both arranged on the left side of the piston gland. The high-pressure sealing spacer ring is located on the right side of the O-ring seal. The outer arc surfaces of the O-ring seal and the high-pressure sealing spacer ring both contact the inner arc surface of the relief groove, which can increase the sealing performance between the cylinder block and the piston gland.

[0011] Further, it also includes a guiding seal sleeve, a first sealing ring, and a second sealing ring. The guiding seal sleeve is arranged on the left side of the inner arc surface of the sliding groove, the first sealing ring is arranged in the middle of the inner arc surface of the sliding groove, and the second sealing ring is arranged on the right side of the inner arc surface of the sliding groove. The inner arc surfaces of the guiding seal sleeve, the first sealing ring, and the second sealing ring are all in contact with the outer arc surface of the piston rod, which can increase the sealing performance between the piston gland and the piston rod.

[0012] Further, it also includes a star Gland packing. The star Gland packing is arranged on the left side of the outer arc surface of the piston rod, and the outer arc surface of the star Gland packing is in contact with the inner arc surface of the cylinder block, which can increase the sealing performance between the cylinder block and the piston rod.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This ultra-high pressure impact-resistant hydraulic power device has the following advantages:

[0014] 1. When the outside is impacted and the pressure in the main chamber or the auxiliary chamber suddenly increases under pressure, the main chamber safety overflow valve or the auxiliary chamber safety overflow valve will open to release the excess pressure, ensuring that the pressure in both chambers does not exceed the rated value. In this way, the pressure output is ensured, and it always remains within the sealed design pressure range, solving the problem of workpiece damage caused by exceeding the sealing pressure tolerance.

[0015] 2. A high-pressure sealing spacer ring is arranged on the right side of the O-ring of the piston gland, further increasing the high-frequency compressive resistance of the piston gland.

[0016] 2. On the right side of the guiding seal sleeve, the angles of the first sealing ring and the second sealing ring are improved, greatly enhancing the reliability under high-frequency impact. It has a small installation space, combines low friction and high elasticity, has dual safety, and also increases the sealing retaining ring to improve the pressure resistance performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic front sectional structural diagram of the present utility model;

[0019] Figure 3 is an enlarged structural diagram at A of the present utility model;

[0020] Figure 4 is an enlarged structural diagram at B of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the first sealing ring of the present utility model;

[0022] Figure 6 is a schematic structural diagram of the second sealing ring of the present utility model.

[0023] In the figure: 1 cylinder block, 2 main chamber safety overflow valve, 3 piston gland, 4 secondary chamber safety overflow valve, 5 leather gasket, 6 spring one, 7 spring two, 8 threaded nail, 9 guiding and sealing sleeve, 10 piston rod, 11 O-ring seal, 12 high-pressure sealing spacer ring, 13 first sealing ring, 14 second sealing ring, 15 star-shaped Gleit seal, 16 sealing bolt, 17 mounting groove. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1-6 , this embodiment provides a technical solution: a super-high-pressure impact-resistant hydraulic power device, including a cylinder block 1. An installation groove 17 is provided on the right side of the outer arc surface of the cylinder block 1. A sealing bolt 16 is connected to the upper side inside the installation groove 17. An injection hole and a discharge hole are respectively provided on the upper side of the left end of the cylinder block 1. The discharge hole is communicated with the installation groove 17, and the injection hole is located below the discharge hole. A piston gland 3 is provided in the relief groove opened in the middle of the right end of the cylinder block 1. A piston rod 10 is slidably connected in the sliding groove provided in the middle of the left end of the piston gland 3. Connecting grooves are provided on both the upper and lower sides of the left end of the piston rod 10, and threaded nails 8 are connected inside the connecting grooves.

[0026] Among them: It also includes a main chamber safety overflow valve 2 and a secondary chamber safety overflow valve 4. The main chamber safety overflow valve 2 is slidably connected in the sliding hole provided in the middle of the left end of the upper threaded nail 8, and the secondary chamber safety overflow valve 4 is slidably connected in the relief through hole provided in the middle of the right end of the lower threaded nail 8. When the outside is impacted and the pressure in the main chamber or the secondary chamber suddenly increases under pressure, the main chamber safety overflow valve 2 or the secondary chamber safety overflow valve 4 will open to release the excess pressure, ensuring that the pressure in both chambers will not exceed the rated value. In this way, the pressure output is ensured to always be within the sealed design pressure range, solving the problem of workpiece damage caused by exceeding the sealed bearing pressure. When the safety pressure is exceeded, the safety overflow valve is opened to balance the pressure. When within the safety pressure range, the safety overflow valve is closed, solving the problem of unstable operation of the high and low pressure oil cylinders due to sealing.

[0027] Wherein: It further includes a first spring 6 and a second spring 7. The first spring 6 is arranged between the right end of the lower threaded stud 8 and the left end of the auxiliary chamber safety overflow valve 4. The first spring 6 is sleeved outside the left side of the auxiliary chamber safety overflow valve 4. The second spring 7 is arranged between the left end of the upper threaded stud 8 and the right end of the main chamber safety overflow valve 2. The second spring 7 is sleeved outside the right side of the main chamber safety overflow valve 2. The elastic forces generated by the extension of the first spring 6 and the second spring 7 can drive the main chamber safety overflow valve 2 or the auxiliary chamber safety overflow valve 4 to move back to its original position.

[0028] Wherein: It further includes a leather gasket 5. The leather gaskets 5 are respectively arranged on the left side of the outer arc surface of the main chamber safety overflow valve 2 and the right side of the outer arc surface of the auxiliary chamber safety overflow valve 4. The upper leather gasket 5 contacts the left wall of the upper connecting groove, and the lower leather gasket 5 contacts the right wall of the lower connecting groove. The leather gasket 5 can increase the sealing performance between the main chamber safety overflow valve 2 or the auxiliary chamber safety overflow valve 4 and the connecting groove.

[0029] Wherein: It further includes an O-ring seal 11 and a high-pressure sealing spacer ring 12. The O-ring seal 11 and the high-pressure sealing spacer ring 12 are both arranged on the left side of the piston gland 3. The high-pressure sealing spacer ring 12 is located on the right side of the O-ring seal 11. The outer arc surfaces of the O-ring seal 11 and the high-pressure sealing spacer ring 12 contact the inner arc surface of the relief groove, which can increase the sealing performance between the cylinder block 1 and the piston gland 3.

[0030] Wherein: It further includes a guide seal sleeve 9, a first sealing ring 13 and a second sealing ring 14. The guide seal sleeve 9 is arranged on the left side of the inner arc surface of the sliding groove. The first sealing ring 13 is arranged in the middle of the inner arc surface of the sliding groove. The second sealing ring 14 is arranged on the right side of the inner arc surface of the sliding groove. The inner arc surfaces of the guide seal sleeve 9, the first sealing ring 13 and the second sealing ring 14 contact the outer arc surface of the piston rod 10, which can increase the sealing performance between the piston gland 3 and the piston rod 10.

[0031] Wherein: It further includes a star-shaped Grease seal 15. The star-shaped Grease seal 15 is arranged on the left side of the outer arc surface of the piston rod 10. The outer arc surface of the star-shaped Grease seal 15 contacts the inner arc surface of the cylinder block 1, which can increase the sealing performance between the cylinder block 1 and the piston rod 10.

[0032] The working principle of a super-high pressure impact-resistant hydraulic power device provided by the present utility model is as follows: When the hydraulic oil pressure in the main chamber increases, it pushes the piston rod 10 to move leftward. When the hydraulic oil pressure in the auxiliary chamber increases, it pushes the piston rod 10 to move rightward. When the outside is impacted and the pressure in the main chamber or the auxiliary chamber is instantaneously and sharply increased under pressure, the main chamber safety overflow valve 2 or the auxiliary chamber safety overflow valve 4 will open, and the first spring 6 and the second spring 7 will contract, thereby discharging the excess pressure to ensure that the pressures in both chambers do not exceed the rated value, thus ensuring the pressure output, and the forces on the workpieces, the working states of the relevant components and seals are all within the designed bearing range. When the pressures in the main and auxiliary chambers can ensure constant pressure, when the oil cylinder is subjected to high-frequency impacts of external pressures, the main chamber safety overflow valve 2 and the auxiliary chamber safety overflow valve 4 will play a role in balancing the pressure, so that the impact force received by the oil cylinder will be absorbed and the influence on the seals and various hydraulic components will be eliminated. When the impact pressure disappears, the oil supply power system of the oil cylinder will be pressed in according to the rated pressure again, thereby ensuring the constancy of the output force of the oil cylinder.

[0033] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. An ultra-high pressure impact-resistant hydraulic power device, characterized in that: The invention comprises a cylinder body (1), wherein a mounting groove (17) is provided on the right side of the outer arc surface of the cylinder body (1), a sealing bolt (16) is connected to the upper side of the mounting groove (17), an injection hole and a discharge hole are respectively provided on the upper side of the left end of the cylinder body (1), the discharge hole is connected to the mounting groove (17), the injection hole is located below the discharge hole, a piston gland (3) is provided in an avoidance groove provided in the middle of the right end of the cylinder body (1), a piston rod (10) is slidably connected in a sliding groove provided in the middle of the left end of the piston gland (3), and a connecting groove is provided on both the upper and lower sides of the left end of the piston rod (10), and a threaded nail (8) is connected to the inside of the connecting groove.

2. The ultra-high pressure impact-resistant hydraulic power device according to claim 1, characterized in that: It also includes a main chamber safety overflow valve (2) and a sub-chamber safety overflow valve (4), wherein the main chamber safety overflow valve (2) is slidably connected to a sliding hole provided in the middle of the left end of the upper threaded nail (8), and the sub-chamber safety overflow valve (4) is slidably connected to an avoidance through hole provided in the middle of the right end of the lower threaded nail (8).

3. The ultra-high pressure impact-resistant hydraulic power device according to claim 2, characterized in that: The invention also comprises a spring 1 (6) and a spring 2 (7), wherein the spring 1 (6) is arranged between the right end of the lower threaded nail (8) and the left end of the secondary chamber safety relief valve (4), and the spring 1 (6) is sleeved on the outside of the left side of the secondary chamber safety relief valve (4), and the spring 2 (7) is arranged between the left end of the upper threaded nail (8) and the right end of the main chamber safety relief valve (2), and the spring 2 (7) is sleeved on the outside of the right side of the main chamber safety relief valve (2).

4. The ultra-high pressure impact-resistant hydraulic power device according to claim 2, characterized in that: It also includes a leather pad (5), which is respectively arranged on the left side of the outer arc surface of the main chamber safety overflow valve (2) and the right side of the outer arc surface of the auxiliary chamber safety overflow valve (4), the upper leather pad (5) contacts the left wall of the upper connecting groove, and the lower leather pad (5) contacts the right wall of the lower connecting groove.

5. The ultra-high pressure impact-resistant hydraulic power device according to claim 1, characterized in that: It also includes an O-ring (11) and a high-pressure sealing spacer ring (12), wherein the O-ring (11) and the high-pressure sealing spacer ring (12) are both arranged on the left side of the piston gland (3), and the high-pressure sealing spacer ring (12) is located on the right side of the O-ring (11), and the outer arc surfaces of the O-ring (11) and the high-pressure sealing spacer ring (12) are in contact with the inner arc surface of the avoidance groove.

6. The ultra-high pressure impact-resistant hydraulic power device according to claim 1, characterized in that: It also includes a guide sealing sleeve (9), a first sealing ring (13) and a second sealing ring (14), wherein the guide sealing sleeve (9) is arranged on the left side of the inner arc surface of the slide groove, the first sealing ring (13) is arranged in the middle of the inner arc surface of the slide groove, and the second sealing ring (14) is arranged on the right side of the inner arc surface of the slide groove, and the inner arc surfaces of the guide sealing sleeve (9), the first sealing ring (13) and the second sealing ring (14) are all in contact with the outer arc surface of the piston rod (10).

7. The ultra-high pressure impact-resistant hydraulic power device according to claim 1, characterized in that: It also includes a star-shaped Gly seal (15), which is arranged on the left side of the outer arc surface of the piston rod (10), and the outer arc surface of the star-shaped Gly seal (15) is in contact with the inner arc surface of the cylinder body (1).

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