An oil pressure compensator

Abstract

The invention discloses an oil pressure compensator, comprising a base; one end of an oil pipe plug is detachably connected to the base, and the other end is connected to an oil pipe fixed sleeve; one end of a sealing connector is detachably connected to the base; a micro switch is fixedly installed on the base and electrically connected to the sealing connector; an oil bag pressure cover is fixedly installed on the inner side of the base; the outlet end of the stacked oil bag is clamped between the base and the oil bag pressure cover; the oil bag cover is arranged on the stacked oil bag; the two ends of the sliding rod are respectively fixedly connected to the base and the oil bag cover; the fixed key is detachably connected to the oil bag cover; there are a plurality of high-strength rubber bands, and the two ends are respectively fixedly connected to the oil bag pressure cover and the oil bag cover. The oil pressure compensator disclosed by the invention, when working, the stacked oil bag squeezes the oil and then compensates the equipment for the oil in real time through the oil pipe; when not working, the lower end of the fixed key is threadedly connected to the oil bag cover, and the oil bag cover is pulled by hand to eliminate the tension on the stacked oil bag, so that the oil filling operation of the compensator can be performed.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater robots, and more particularly to an oil pressure compensator. Background Art

[0002] Underwater robots, also known as unmanned remote-controlled submersibles, are extreme operation robots that work underwater. The underwater environment is harsh and dangerous, and the diving depth of humans is limited, so underwater robots have become an important tool for developing the ocean. Unmanned remote-controlled submersibles mainly include: cabled remote-controlled submersibles and cable-free remote-controlled submersibles. Among them, cabled remote-controlled submersibles are divided into three types: self-propelled in water, towed, and able to crawl on seabed structures.

[0003] At present, underwater robots are an industry with high technical difficulty and great market potential. my country's technological research and development in this industry is still in an extremely backward state, especially the diving depth has always been a problem. The compensators currently used in the world are inconvenient to use, with complex structures but do not meet the functions that the compensators should have. For example, at present, only throttle valves, sensors, etc. can be added to the hydraulic control system, which is inefficient and costly. A simple deep-sea compensator currently used is to fill the oil bag with pressure balancing oil to achieve a state of internal and external pressure balance in deep-sea equipment, ensuring that the equipment is not crushed. This type of compensator is called an "oil pressure compensator". However, this conventional compensator, because the internal and external pressures are absolutely equal, when the external environment changes instantly, the external pressure increases instantly, causing the equipment to collapse.

[0004] Therefore, how to provide an oil pressure compensator is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides an oil pressure compensator, which can be used for oil compensation of an underwater robot to ensure the real-time balance of the internal and external pressures of the underwater robot, thereby achieving equipment protection.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] An oil pressure compensator comprises a base, an oil pipe fixing sleeve, an oil pipe plug, a micro switch, a sealing connector, an oil bag gland, a slide rod, a stacked oil bag, an open retaining ring, an oil bag cover, a fixing key and a high-strength rubber band; the base is a cylinder, and a plurality of stepped cylindrical through holes are opened near the outer edge thereof, and a first mounting hole and a second mounting hole are provided in the middle; the central axis direction of the oil pipe plug is a through hole, and one end is detachably connected to the first mounting hole of the base, and the other end is threadedly connected to the oil pipe fixing sleeve; the axis of the sealing connector is a potting structure, and one end is detachably connected to the second mounting hole of the base; the micro switch is fixedly installed on the side of the base away from the oil pipe fixing sleeve, And it is electrically connected to the sealing connector; the oil bag pressure cover is a circular column structure, fixedly installed on the inner side of the base; the outlet end of the stacked oil bag is provided with a raised ring ear, and the raised ring ear is clamped between the base and the oil bag pressure cover; the oil bag cover is arranged on the side of the stacked oil bag away from the base, and its outer edge is provided with multiple through holes, and a key installation groove is provided in the middle; three circular ring grooves are provided on the slide rod, and an open retaining ring is provided in the circular ring groove, and the two ends of the slide rod respectively penetrate the stepped cylindrical through hole of the base and the through hole of the oil bag cover and are fixedly connected accordingly; the fixed key is detachably connected in the key installation groove; there are multiple high-strength rubber bands, and the two ends are respectively fixedly connected to the oil bag pressure cover and the oil bag cover.

[0008] The present invention discloses an oil pressure compensator. When the oil pressure compensator is in operation, the fixed key is removed to release the tension of the high-strength rubber band. The high-strength rubber band is connected to the oil bag pressure cover and the oil bag cover at both ends. The high-strength tension of the high-strength rubber band drives the oil bag cover to move. The axial movement of the oil bag cover along the sliding rod generates external pressure on the stacked oil bag. The stacked oil bag squeezes the oil and then compensates the equipment for the oil in real time through the oil pipe. When the oil pressure compensator is not in operation, the lower end of the fixed key is threadedly connected to the oil bag cover. The oil bag cover is pulled by hand to eliminate the tension on the stacked oil bag. At this time, the compensator can be filled with oil.

[0009] Preferably, it also includes a fixed cover, the outer edge of the fixed cover is provided with four through holes, the top end of the slide rod passes through the through holes, and the annular grooves of the slide rod are clamped on the two end surfaces of the fixed cover by open retaining rings.

[0010] The beneficial effect of adopting the above technical solution is that the fixed cover can fix and guide the sliding rod.

[0011] Preferably, a circular groove is provided on the outer side of the center of the fixing cover, and a square groove is provided on the inner side, and the circular groove and the square groove are connected.

[0012] The beneficial effect of adopting the above technical solution is that the hand-pull oil bag cover is pulled to the position where the pulling force of the stacked oil bags is eliminated, and the fixed key rectangular body is clamped on the circular groove of the fixed cover through axial rotation.

[0013] Preferably, the middle part of the oil pipe plug is a hexagonal prism structure and external threads are arranged on both sides, and a sealing ring is arranged at the connection between the oil pipe plug and the base.

[0014] The beneficial effect of adopting the above technical solution is that the hexagonal prism structure makes it easier for the wrench to achieve a tight fit between the oil pipe plug and the base; the front and rear sections of the oil pipe plug respectively cooperate with the internal threads of the oil pipe fixing sleeve and the base to achieve a threaded connection between the three components.

[0015] Preferably, a protective net is further included, one end of which is arranged between the base and the oil bag pressure cover, and the inner side of the other end is supported by a fixed cover.

[0016] The beneficial effect of adopting the above technical solution is that the protective net can protect the compensator.

[0017] Preferably, a circular through hole is provided at the top of the fixed key.

[0018] The beneficial effect of adopting the above technical solution is that the circular through hole is provided to facilitate the passage of fingers.

[0019] Preferably, the stacked oil bladder is made of rubber material, and the distance between the oil bladder gland and the base is smaller than the wall thickness of the stacked oil bladder.

[0020] The beneficial effect of adopting the above technical solution is that the setting of the stacked oil bag facilitates the axial stretching and compression of the oil bag, and a raised ring ear is provided at the outlet end of the stacked oil bag, which is pressed tightly between the oil bag cover and the base, and the elastic deformation of the rubber can be used to achieve the fixation and sealing of the stacked oil bag.

[0021] Preferably, the high-strength rubber band is made of rubber material and is provided with a metal buckle for locking and disconnecting; the oil bag pressure cover and the oil bag cover are both provided with raised holes, and the high-strength rubber band passes through the corresponding raised buckles to form a closed-loop structure.

[0022] The beneficial effect of adopting the above technical solution is that the elasticity of the high-strength rubber band is used to achieve the expansion and contraction of the stacked oil bag.

[0023] Preferably, the protective net wall is provided with uniform and dense through holes.

[0024] The beneficial effect of adopting the above technical solution is that evenly distributed through holes are opened on the wall of the protective net to ensure that the stacked oil bags can be in direct contact with the external water area. At the same time, the open hole structure of the protective net can effectively resist the damage to the stacked oil bags caused by complex water areas, thereby protecting the compensator.

[0025] Preferably, it also includes a sliding sleeve, which is in the shape of a hollow cylinder, with an annular protrusion arranged on the outer wall, and the sliding sleeve is fixed to the groove of the oil bag cover.

[0026] The beneficial effect of adopting the above technical solution is that the sliding sleeve adopts a low friction coefficient to achieve axial low-friction sliding of the oil bag cover.

[0027] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses an oil pressure compensator which is small in size and light in weight, has the functions of oil shortage alarm and large oil compensation amount, can be used for real-time oil compensation of underwater robots for a long time, ensures the balance of internal and external pressures of underwater robots in underwater environments, and provides certain protection for underwater robots. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 The accompanying drawing is a schematic diagram of the structure provided by the present invention.

[0030] Figure 2 The accompanying drawing is a schematic diagram of the oil shortage alarm and oil pumping and filling structure of the present invention.

[0031] Figure 3 The accompanying drawing is a schematic diagram of the structure of the pressure working part provided by the present invention Figure 1 .

[0032] Figure 4 The accompanying drawing is a schematic diagram of the structure of the pressure working part provided by the present invention Figure 2 .

[0033] Figure 5 The accompanying drawing is a schematic diagram of the working structure of the fixed key of the present invention.

[0034] Wherein, each figure is marked as:

[0035] 1-sealing ring, 2-oil pipe fixing sleeve, 3-oil pipe plug, 4-micro switch, 5-sealing connector, 6-base, 7-oil bag pressure cover, 8-protective net, 9-slide rod, 10-stacked oil bag, 11-slide sleeve, 12-open retaining ring, 13-oil bag cover, 14-fixed key, 15-fixed cover, 16-high-strength rubber band, 17-stepped cylindrical through hole, 18-first mounting hole, 19-second mounting hole, 20-key mounting slot. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The embodiment of the present invention discloses an oil pressure compensator, which includes a sealing ring 1, an oil pipe fixing sleeve 2, an oil pipe plug 3, a micro switch 4, a sealing connector 5, a base 6, an oil bag pressure cover 7, a protective net 8, a sliding rod 9, a stacked oil bag 10, a sliding sleeve 11, an open retaining ring 12, an oil bag cover 13, a fixing key 14, a fixing cover 15, and a high-strength rubber band 16.

[0038] The sealing ring 1 is placed in the sealing groove of the oil pipe plug 3, and the sealing between the oil pipe plug 3 and the base 6 is achieved through the medium pressure and the deformation of the sealing ring 1 itself.

[0039] The outer surface of the oil pipe fixing sleeve 2 is knurled to prevent slipping. The front section of the interior is a smooth concave-convex structure, and the rear section is provided with an internal thread, which is connected to the oil pipe plug 3 through a thread. The concave-convex cooperation between the oil pipe fixing sleeve 2 and the front end of the oil pipe plug 3 can clamp the oil pipe between the two, and the fixation and sealing between the oil pipe and the oil pipe plug 3 are achieved through the deformation of the oil pipe.

[0040] The middle section of the oil pipe plug 3 is a hexagonal prism structure and a sealing groove is provided at the right end of the hexagonal prism. External threads are provided on both sides of the hexagonal prism. The outer surface of the front head is a smooth concave-convex structure. The central axis direction of the oil pipe plug 3 is a through hole. The front and rear sections of the external threads of the oil pipe plug 3 are respectively matched with the internal threads of the oil pipe fixing sleeve 2 and the base 6 to realize the threaded connection between the three components. The hexagonal prism structure makes it easy for the wrench to achieve a close fit between the oil pipe plug 3 and the base 6.

[0041] The micro switch 4 is fixed in the raised groove at the right end of the base 6 by means of screws and nuts. During operation, when the stacked oil bag 10 is compressed to a certain extent, it will contact the spring sheet of the micro switch 4. Continuing compression will connect the micro switch 4, thereby transmitting the oil shortage signal and realizing the compensator oil shortage alarm function.

[0042] The axis of the sealed connector 5 is a potting structure, which can ensure sealing while achieving connectivity between the signal lines at both ends. The front section of the sealed connector 5 is a hexagonal prism structure, and a sealing groove is provided on the side of the hexagonal prism to cooperate with the sealing ring 1 for sealing. The rear section of the sealed connector 5 is a threaded structure.

[0043] Four stepped cylindrical through holes are provided on the outer edge of the base 6, and form a mechanical fit with the stepped platform at the bottom of the slide rod 9 to limit the slide rod 9. Two threaded openings are provided in the middle of the base 6, one is used for the signal output line of the micro switch 4 in cooperation with the sealing connector 5, and the other is used for pumping and filling oil in cooperation with the oil pipe plug 3, thereby realizing the oil shortage alarm and oil compensation function of the compensator.

[0044] The oil bag pressure cover 7 is a circular column structure, with four evenly distributed convex handle holes near the outer edge, and a sealing groove near the inner circle of its front end. The oil bag pressure cover 7 is fixed to the base 6 by screws. At this time, the oil bag pressure cover 7 will press the annular ear protrusion of the stacked oil bag 10, and the stacked oil bag 10 is fixed and sealed by the deformation of the annular ear of the stacked oil bag 10.

[0045] The wall surface of the protective net 8 is provided with evenly spaced through holes to ensure that the stacked oil sac 10 can be in direct contact with the external water area. At the same time, the open hole structure of the protective net 8 can effectively resist the damage of the stacked oil sac 10 by complex water areas, thereby protecting the compensator. In addition, the bottom end of the protective net 8 is pressed by the base 6 and the oil sac pressure cover 7, and the fixed cover 15 is propped up inside the top of the protective net 8 to fix the protective net 8.

[0046] The slide bar 9 is in a stepped cylindrical shape. The slide bar 9 is smooth throughout and is provided with three annular grooves for positioning and clamping the opening retaining ring 12 .

[0047] The stacked oil bladder 10 is made of rubber and has an overall stacked structure, which is convenient for axial stretching and compression of the stacked oil bladder 10. A raised ring ear is provided at the outlet end of the stacked oil bladder 10. In addition, the distance between the oil bladder gland 7 and the base 6 is smaller than the wall thickness of the stacked oil bladder 10. The elastic deformation of the rubber can be used to achieve fixation and sealing of the stacked oil bladder 10.

[0048] The sleeve 11 is made of a material with a low friction coefficient and is cylindrical in shape as a whole. An annular protrusion is provided on its outer wall. The annular protrusion on the outer circle of the sleeve 11 cooperates with the groove of the oil bag cover 13 to fix the sleeve 11 on the oil bag cover 13. The inner hole of the sleeve 11 cooperates with the outer circle of the slide rod 9 to achieve axial low-friction sliding of the oil bag cover 13.

[0049] The open retaining ring 12 is clamped in the groove on the slide rod 9, which can fix the slide rod 9 to the oil bag pressure cover 7 and the base 6. The open retaining rings 12 on the two end surfaces of the fixed cover 15 can fix the position of the fixed cover 15 and improve the overall strength of the compensator.

[0050] Four through holes are provided near the outer edge of the oil bag cover 13, and grooves are provided in the through holes. Four evenly distributed convex handle holes are provided near the outer edge of the fixed cover 15. A smooth groove is provided on the end face of the oil bag side of the oil bag cover 13, which can effectively reduce the radial deviation of the stacked oil bag 10 during operation. The threaded hole provided on the small boss in the center of the top end face of the oil bag cover 13 is threadedly connected to the lower end of the fixed key 14 to achieve the fixation between the oil bag cover 13 and the fixed key 14.

[0051] The outer edge of the fixed cover 15 is provided with four through holes, the diameter of the through holes is slightly larger than the diameter of the slide rod 9, the top end of the slide rod 9 passes through the four through holes, and the two grooves of the slide rod 9 are clamped on the two end surfaces of the fixed cover 15 by an open retaining ring 12 to fix the fixed cover 15 and the four slide rods 9. A special groove structure is provided in the center of the fixed cover 15, the upper end is a circular groove, the lower end is a square groove, and the two grooves are connected.

[0052] The fixed key 14 is in the shape of a key as a whole, and a circular through hole is provided at the top to facilitate the finger to pass through, providing a fulcrum for manually pulling the fixed key 14. A rectangular structure is provided near the lower end of the fixed key 14, and the length and width of the rectangular structure are slightly smaller than the length and width of the middle groove of the fixed cover 15. In particular, the length of the rectangular structure at the lower end of the fixed key 14 is greater than the width of the middle groove of the fixed cover 15. The bottom end of the fixed key 14 is an external thread structure, which cooperates with the internal thread structure in the middle of the oil bag cover 13.

[0053] The high-strength rubber band 16 is made of special rubber material. A metal buckle for locking and disconnecting is provided on the closed-loop structure of the high-strength rubber band 16 to facilitate the high-strength rubber band 16 to pass through the raised holes provided on the oil bag pressure cover 7 and the oil bag cover 13 .

[0054] When the oil pressure compensator of the present invention is working, the fixed key 14 is taken out from the compensator to release the tension of the high-strength rubber band 16. The four high-strength rubber bands 16 are connected to the oil bag pressure cover 7 and the convex handle holes of the oil bag cover 13 at both ends. The high-strength tension of the high-strength rubber band 16 will drive the oil bag cover 13. The axial movement of the oil bag cover 13 along the four sliding rods 9 will generate external pressure on the stacked oil bag 10. The stacked oil bag 10 squeezes the oil and then compensates the equipment for the oil in real time through the oil pipe.

[0055] When the oil pressure compensator is not working, the lower end of the fixed key 14 is threadedly connected to the oil bag cover 13, and passes through the fixed cover 15 in the middle. The oil bag cover 13 is pulled by hand to eliminate the tension of the stacked oil bag 10, and the rectangular body of the fixed key 14 is clamped in the circular groove of the fixed cover 15 through axial rotation. In particular, the compensator can be filled with oil at this time.

[0056] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0057] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil pressure compensator, characterized in that: The oil pipe plug (3) comprises a base (6), an oil pipe fixing sleeve (2), an oil pipe plug (3), a micro switch (4), a sealing connector (5), an oil bag pressure cover (7), a sliding rod (9), a stacked oil bag (10), an open retaining ring (12), an oil bag cover (13), a fixing key (14) and a high-strength rubber band (16); the base (6) is a cylinder, and a plurality of stepped cylindrical through holes (17) are provided near the outer edge thereof, and a first mounting hole (18) and a second mounting hole (19) are provided in the middle; the oil pipe plug (3) is a through hole in the central axis direction, and one end is detachably connected to the first mounting hole (18) of the base (6), and the other end is threadedly connected to the oil pipe fixing sleeve (2); the axis of the sealing connector (5) is a potting structure, and one end is detachably connected to the second mounting hole (19) of the base (6); the micro switch (4) is fixedly installed on a side of the base (6) away from the oil pipe fixing sleeve (2), and is electrically connected to the sealing connector (5); The oil bag pressure cover (7) is a circular column structure and is fixedly installed on the inner side of the base (6); the outlet end of the stacked oil bag (10) is provided with a raised ring ear, and the raised ring ear is clamped between the base (6) and the oil bag pressure cover (7); the oil bag cover (13) is arranged on the side of the stacked oil bag (10) away from the base (6), and a plurality of through holes are arranged on its outer edge, and a key installation groove (20) is arranged in the middle; three circular grooves are arranged on the slide rod, and an open retaining ring (12) is arranged in the circular groove, and the two ends of the slide rod (9) respectively penetrate the stepped cylindrical through hole (17) of the base and the through hole of the oil bag cover (13) and are fixedly connected to each other; the fixed key (14) is detachably connected to the key installation groove (20); there are a plurality of high-strength rubber bands (16), and the two ends are respectively fixedly connected to the oil bag pressure cover (7) and the oil bag cover (13); A circular through hole is provided at the top of the fixed key (14); The high-strength rubber band is made of rubber material and is provided with a metal buckle for locking and disconnecting; the oil bag pressure cover (7) and the oil bag cover (13) are both provided with raised holes, and the high-strength rubber band (16) passes through the corresponding raised buckles to form a closed loop structure.

2. The oil pressure compensator according to claim 1, characterized in that: It also includes a fixed cover (15), the outer edge of which is provided with four through holes, the top end of the slide bar (9) passes through the through holes, and an open retaining ring (12) is used to clamp the annular groove of the slide bar at both end surfaces of the fixed cover (15).

3. The oil pressure compensator according to claim 2, characterized in that: A circular groove is provided on the outer side of the center of the fixed cover (15), and a square groove is provided on the inner side, and the circular groove and the square groove are connected.

4. The oil pressure compensator according to claim 1, characterized in that: The middle part of the oil pipe plug (3) is a hexagonal column structure and external threads are arranged on both sides. A sealing ring (1) is arranged at the connection between the oil pipe plug (3) and the base (6).

5. The oil pressure compensator according to claim 2, characterized in that: It also includes a protective net (8), one end of which is arranged between the base (6) and the oil bag pressure cover (7), and the inner side of the other end is supported by a fixed cover (15).

6. The oil pressure compensator according to claim 1, characterized in that: The stacked oil bladder (10) is made of rubber material, and the distance between the oil bladder gland (7) and the base (6) is smaller than the wall thickness of the stacked oil bladder (10).

7. The oil pressure compensator according to claim 5, characterized in that: The wall of the protective net (8) is provided with evenly spaced through holes.

8. The oil pressure compensator according to claim 1, characterized in that: It also comprises a sliding sleeve (11), which is in the shape of a hollow cylinder and has an annular protrusion on its outer wall. The sliding sleeve (11) is fixed to the groove of the oil bag cover (13).

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