Underwater mechanical arm joint steering engine sealing bin

Abstract

The utility model relates to the field of underwater mechanical arm equipment, discloses an underwater mechanical arm joint steering engine sealing bin and solves the problem that an existing underwater mechanical arm joint steering engine sealing bin is poor in protection effect. Through the outer shell, the inner sleeve, the inclined groove, the steel balls, the spring, the push plate, the groove opening and the sliding groove, a worker enables a screw to penetrate through a screw hole of the bin cover and be inserted into the groove opening of the fixing shell through simple operation, tight contact between the screw and the three sets of steel balls is achieved through the conical structure of the inner sleeve, rolling of the steel balls and extrusion of the spring, and the bin cover and the bin body are fixed; in order to prevent the screws from being eroded by water and rusted, the protective cover is closed through the hinge, the clamping blocks in the protective cover are clamped with the clamping grooves in the bin cover, and the inflatable air bag in the protective cover is tightly attached to the top ends of the screws, so that water is blocked, and the safety of the screws is improved. And the protection effect is enhanced through the pressing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater mechanical arm equipment, in particular to a sealed compartment of an underwater mechanical arm joint steering gear. Background Art

[0002] The underwater manipulator arm joint servo sealing chamber is a mechanical product that loads and seals the underwater manipulator arm joint servo. Its main function is to encapsulate the servo used for the rotation of the manipulator arm joint, making it sealed and waterproof and anti-fouling, and withstand a certain pressure to enable it to work normally underwater.

[0003] For example, the patent with publication number CN211890919U discloses a sealed chamber for underwater mechanical arm joint servo, comprising: a chamber body, a chamber cover, a side pressure cover and a flange sleeve; the chamber body is a concave structure, with control line inlets and outlets on both sides, and a sealing boss is provided outside the control line inlet and outlet; the chamber cover is a plate structure, with a power shaft mechanical seal through hole on one side of the upper surface, and a magnetic mechanical seal assembly is installed inside; the side pressure cover is a plate structure, with a threading hole in the center; the flange sleeve is an axial rotating body with a power shaft output through hole in the middle, and a flange plate is provided at one end; the power shaft output through hole is connected to the servo output shaft, is tightly connected to the magnetic mechanical seal assembly through the outside of the body, and is connected to the mechanical arm through the flange plate. The present invention improves and innovates the sealing of the underwater mechanical arm joint servo, achieves the purpose of connecting the underwater multi-axis mechanical arm joint servos in series, and improves the flexibility of underwater mechanical arm design and manufacturing.

[0004] The end face of the sealing boss of the above-mentioned comparative patent is fitted with one side of the side pressure cover with a water stop convex ring II, and the threaded hole II is aligned with the screw through hole II, and they are tightly connected with a suitable screw. The other side is the same. Since the screws are easily loosened due to the impact of water flow, temperature changes, mechanical vibrations and other factors during long-term underwater work, once the screws are loose, gaps will appear between the chamber body and the chamber cover, resulting in reduced sealing, which in turn allows water or other contaminants to enter the sealed chamber and cause damage to the steering gear. The top of the screw is in contact with water for a long time, especially in water containing salt or other corrosive substances, and rust is likely to occur. Rust will not only reduce the strength of the screw and increase the risk of breakage, but may also produce rust, further affecting the sealing performance of the sealed chamber. Utility Model Content

[0005] The utility model aims to provide a sealed compartment of an underwater mechanical arm joint steering gear, and the device is adopted to work, thereby solving the problem that the existing sealed compartment of an underwater mechanical arm joint steering gear has poor protection effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealed chamber of an underwater mechanical arm joint steering gear, comprising a chamber body, a chamber cover arranged at the top of the chamber body, a side pressure cover arranged at one side of the chamber body, a flange sleeve arranged at the top of the chamber cover, a screw hole provided on the surface of the chamber cover, a screw threadedly connected to the inner part of the screw hole, a limiting structure arranged inside the chamber body, and a protective structure arranged on the top surface of the chamber cover;

[0007] The limiting structure includes a fixed shell arranged inside the bin body, an outer shell arranged inside the fixed shell, an inner sleeve slidably connected inside the outer shell, an inclined groove is opened on the surface of the inner sleeve, a steel ball is movably connected inside the inclined groove, and a push plate is arranged on the top of the inner sleeve;

[0008] The protection structure comprises a hinge arranged on the top end of the bin cover and a protection cover arranged on one end of the hinge.

[0009] Furthermore, the outer shell and the inner sleeve are in a conical structure, a spring is provided at the bottom end of the inner sleeve and one end is connected to the fixed shell, three groups of inclined grooves are provided at equal intervals, three groups of steel balls are provided at equal intervals, and the three groups of steel balls slide in the inclined grooves respectively.

[0010] Furthermore, the fixing shell, the inner sleeve and the push plate are all provided with corresponding notches, and the notches are threadedly connected to the screws.

[0011] Furthermore, a sliding groove is provided on the surface of the fixed shell, and the push plate slides in the sliding groove.

[0012] Furthermore, an air bag is provided at the inner top of the protective cover, and the air bag is used to provide a buffering effect on the nut. A clamping block is provided at one end of the protective cover, and a clamping slot is provided on the top surface of the bin cover, and the clamping block is engaged with the clamping slot.

[0013] Furthermore, a waterproof structure is provided on one side of the fixed shell, and the waterproof structure includes a cover shell provided on one side of a sealing strip provided on one side of the fixed shell, and the size of the cover shell is larger than the size of the slide groove.

[0014] Furthermore, a groove is provided on the surface of the cover shell, and a sleeve plate is slidably connected inside the groove.

[0015] Furthermore, a first magnet block is arranged inside the sleeve plate, and a second magnet block is arranged at one end of the push plate close to the slide slot, and the first magnet block and the second magnet block attract each other with opposite poles.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The utility model proposes a sealed compartment for underwater mechanical arm joint steering gear. The existing sealed compartment for underwater mechanical arm joint steering gear has poor protection effect. The utility model uses an outer shell, an inner sleeve, an inclined groove, steel balls, a spring, a push plate, a notch and a slide groove. The staff can insert the screws through the screw holes of the compartment cover and into the notches of the fixed shell through simple operations. The conical structure of the inner sleeve and the rolling of the steel balls are combined with the extrusion of the spring to achieve close contact between the screws and the three groups of steel balls, thereby firmly fixing the compartment cover and the compartment body. In addition, the gravity of the compartment cover and its accessories makes the steel balls fit the screws more closely, further enhancing the fixing effect. In order to prevent the screws from being eroded and rusted by water, the staff also closes the protective cover through hinges, and uses the internal card blocks to fit with the card slots on the compartment cover. The inflatable air bag inside the protective cover fits tightly with the top of the screw, which not only blocks moisture, but also enhances the protection effect through its pressing effect. The whole design is simple and efficient, and effectively guarantees the stability and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the bolt and the limiting structure of the utility model;

[0021] Figure 4 It is a schematic diagram of a three-dimensional expanded cross-sectional structure of the limiting structure of the utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the protective structure of the utility model;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the waterproof structure of the utility model.

[0024] In the figure: 1. bin body; 2. bin cover; 3. side pressure cover; 4. flange sleeve; 5. screw; 6. screw hole; 7. limiting structure; 71. fixing shell; 72. outer shell; 73. inner sleeve; 74. inclined groove; 75. steel ball; 76. spring; 77. push plate; 78. notch; 79. slide groove; 8. protective structure; 81. hinge; 82. protective cover; 83. air bag; 84. clamping block; 85. clamping slot; 9. waterproof structure; 91. cover shell; 92. sealing strip; 93. groove; 94. sleeve plate; 95. magnet block one; 96. magnet block two. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0027] Combination Figure 1-Figure 5 A sealed chamber for an underwater manipulator joint steering gear comprises a chamber body 1, a chamber cover 2 arranged at the top of the chamber body 1, a side pressure cover 3 arranged at one side of the chamber body 1, a flange sleeve 4 arranged at the top of the chamber cover 2, a screw hole 6 opened on the surface of the chamber cover 2, a screw 5 being threadedly connected to the inner surface of the screw hole 6, a limiting structure 7 being arranged inside the chamber body 1, and a protective structure 8 being arranged on the top surface of the chamber cover 2.

[0028] The utility model is further described below in conjunction with embodiments.

[0029] Embodiment 1:

[0030] See also Figure 1-Figure 5 The limiting structure 7 includes a fixed shell 71 arranged inside the warehouse body 1, an outer shell 72 arranged inside the fixed shell 71, an inner sleeve 73 slidably connected to the inner shell 72, an inclined groove 74 is provided on the surface of the inner sleeve 73, and a steel ball 75 is movably connected inside the inclined groove 74. A push plate 77 is provided at the top of the inner sleeve 73. The outer shell 72 and the inner sleeve 73 are in a conical structure. A spring 76 is provided at the bottom end of the inner sleeve 73, and one end is connected to the fixed shell 71. The inclined groove 74 is provided with three groups at equal intervals, and three groups of steel balls 75 are provided with three groups at equal intervals. The three groups of steel balls 75 slide in the inclined groove 74 respectively, and the fixed shell 71, the inner sleeve 73 and the push plate 77 are all provided with corresponding notches 78. The notches 78 are threadedly connected to the screw 5. The surface of the fixed shell 71 is provided with a slide groove 79, and the push plate 77 slides in the slide groove 79 to prevent the screw 5 from falling off.

[0031] The protective structure 8 includes a hinge 81 arranged at the top of the bin cover 2, a protective cover 82 arranged at one end of the hinge 81, an air bag 83 is arranged at the inner top of the protective cover 82, the air bag 83 is used to buffer the nut, a clamping block 84 is arranged at one end of the protective cover 82, and a clamping groove 85 is opened on the top surface of the bin cover 2, and the clamping block 84 is engaged with the clamping groove 85 to achieve a protective effect.

[0032] When the screw 5 is inserted into the slot 78 of the fixing shell 71, the screw 5 is inserted into the inner sleeve 73 and the slot 78 of the push plate 77 inside the fixing shell 71. Since the inner sleeve 73 is a tapered structure with a larger bottom and a smaller top, the three groups of steel balls 75 roll downward along the inner wall of the outer shell 72 inside the three groups of slots 78 opened on the surface of the inner sleeve 73. The inner sleeve 73 presses the spring 76, thereby expanding the gap between the three groups of steel balls 75 and the screw 5 contacts the three groups of steel balls 75, so that the bin cover 2 is fixed to the bin body 1 by the screw 5. The operation is convenient. It only needs to insert the screw 5 to fix it. The gravity of the bin cover 2 and the flange sleeve 4 makes the three groups of steel balls 75 move downward, so that the gap between the three groups of steel balls 75 is smaller, the fit to the screw 5 is higher, and the screw 5 is clamped tighter, thereby achieving a locked state to prevent the screw 5 from falling off.

[0033] The protective cover 82 is closed by the hinge 81, and then the block 84 at one end of the protective cover 82 is engaged with the slot 85 opened at the top of the compartment cover 2, and the air bag 83 filled with half of the gas provided at the top of the inner top of the protective cover 82 is in contact with the top of the screw 5, and the air bag 83 fits with the top of the screw 5. The protective cover 82 is used to prevent water from soaking the screw 5 and causing rust. At the same time, the air bag 83 has a certain suppressing effect on the top of the screw 5, thereby achieving a protective effect.

[0034] Embodiment 2:

[0035] See also Figure 6 A waterproof structure 9 is provided on one side of the fixed shell 71, and the waterproof structure 9 includes a sealing strip 92 provided on one side of the fixed shell 71. A cover shell 91 is provided on one side of the sealing strip 92. The size of the cover shell 91 is larger than the size of the slide groove 79. A groove 93 is provided on the surface of the cover shell 91. A sleeve plate 94 is slidably connected to the inside of the groove 93. A magnet block 1 95 is provided inside the sleeve plate 94. A magnet block 2 96 is provided at one end of the push plate 77 close to the slide groove 79. The magnet block 1 95 and the magnet block 2 96 attract each other with opposite poles to prevent water from entering from the slide groove 79, thereby improving the sealing effect.

[0036] Specifically, when it is necessary to separate the bin cover 2 from the bin body 1, the sleeve plate 94 is grasped and slid upward in the groove 93. The sleeve plate 94 drives the internal magnet block 1 95 to move upward, and the magnet block 1 95 drives the magnet block 2 96 of opposite poles to move upward. Since the magnet block 2 96 is fixed to the push plate 77, the magnet block 2 96 drives the push plate 77 to slide upward in the slide groove 79, and the push plate 77 drives the inner sleeve 73 to move upward. Further, the inner sleeve 73 drives the steel balls 75 inside the inclined groove 74 to move, so that the gaps between the three groups of steel balls 75 are enlarged, and the three groups of steel balls 75 do not contact the screws 5, so that the screws 5 can be pulled out, which is easy to operate. At the same time, one side of the cover shell 91 is fixed to the fixed shell 71 by the sealing strip 92 to prevent water from entering from the slide groove 79, thereby improving the sealing effect.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealed chamber for an underwater manipulator joint steering gear, comprising a chamber body (1), a chamber cover (2) arranged at the top of the chamber body (1), a side pressure cover (3) arranged at one side of the chamber body (1), a flange sleeve (4) arranged at the top of the chamber cover (2), a screw hole (6) provided on the surface of the chamber cover (2), a screw (5) being threadedly connected to the inner part of the screw hole (6), and characterized in that: A limiting structure (7) is provided inside the bin body (1), and a protective structure (8) is provided on the top surface of the bin cover (2); The limiting structure (7) comprises a fixed shell (71) arranged inside the bin body (1), an outer shell (72) arranged inside the fixed shell (71), an inner sleeve (73) slidably connected inside the outer shell (72), an inclined groove (74) is provided on the surface of the inner sleeve (73), a steel ball (75) is movably connected inside the inclined groove (74), and a push plate (77) is provided at the top end of the inner sleeve (73); The protective structure (8) comprises a hinge (81) arranged at the top end of the bin cover (2) and a protective cover (82) arranged at one end of the hinge (81).

2. The sealed compartment of the underwater manipulator joint steering gear according to claim 1, characterized in that: The outer shell (72) and the inner shell (73) are of a conical structure. A spring (76) is provided at the bottom end of the inner shell (73) and one end of the spring (76) is connected to the fixed shell (71). Three groups of inclined grooves (74) are provided at equal intervals. Three groups of steel balls (75) are provided at equal intervals. The three groups of steel balls (75) slide in the inclined grooves (74) respectively.

3. The sealed compartment of the underwater manipulator joint steering gear according to claim 2, characterized in that: The fixing shell (71), the inner sleeve (73) and the push plate (77) are all provided with corresponding notches (78), and the notches (78) are threadedly connected to the screws (5).

4. The sealed compartment of the underwater manipulator joint steering gear according to claim 3, characterized in that: A sliding groove (79) is provided on the surface of the fixed shell (71), and the push plate (77) slides in the sliding groove (79).

5. The sealed compartment of the underwater manipulator joint steering gear according to claim 1, characterized in that: An air bag (83) is arranged at the inner top end of the protective cover (82), and the air bag (83) is used for providing a buffering effect on the nut. A clamping block (84) is arranged at one end of the protective cover (82), and a clamping groove (85) is provided on the top surface of the bin cover (2), and the clamping block (84) is clamped with the clamping groove (85).

6. The sealed compartment of the underwater manipulator joint steering gear according to claim 1, characterized in that: A waterproof structure (9) is provided on one side of the fixed shell (71), and the waterproof structure (9) comprises a sealing strip (92) provided on one side of the fixed shell (71). A cover shell (91) is provided on one side of the sealing strip (92), and the size of the cover shell (91) is larger than the size of the slide groove (79).

7. The sealed compartment of the underwater manipulator joint steering gear according to claim 6, characterized in that: A groove (93) is formed on the surface of the cover shell (91), and a sleeve plate (94) is slidably connected inside the groove (93).

8. The sealed compartment of the underwater manipulator joint steering gear according to claim 7, characterized in that: A magnet block 1 (95) is arranged inside the sleeve plate (94), and a magnet block 2 (96) is arranged at one end of the push plate (77) close to the slide groove (79), and the magnet block 1 (95) and the magnet block 2 (96) attract each other with opposite poles.

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