Sealing structure of underwater mechanical arm

Abstract

A sealing structure of an underwater mechanical arm is characterized by comprising a mounting plate and a protective pipe, one end of the protective pipe is welded and fixed to the mounting plate, the mechanical arm extends into the protective pipe, a bearing is arranged outside the mechanical arm, the bearing is mounted in the protective pipe, and the protective pipe is fixedly connected with the mechanical arm. A connecting thread is arranged on the inner wall of a port of the other end of the protection pipe and is in threaded connection with the sealing end cover, a center through hole is formed in the center of the sealing end cover, and the hole diameter of the center through hole is matched with the outer diameter of the mechanical arm, so that the mechanical arm penetrates through the center through hole of the sealing end cover; the mechanical arm is isolated from water through the protection pipe, so that the corrosion damage condition of the mechanical arm is reduced, the sealing end cover is fixed to the end opening of the protection pipe in a threaded installation mode, water is prevented from entering the end opening, and the mechanical arm is prevented from being damaged. And the sealing assembly is designed to enhance the sealing performance of the joint of the sealing end cover and the mechanical arm.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical arm underwater sealing technical field especially relates to a kind of sealing structure of underwater mechanical arm. BACKGROUND

[0002] With the design and manufacture of mechanical arm mechanism gradually mature, it is also more and more widely applied to underwater operation, but general mechanical arm is driven by motor and gear transmission, even if increasing waterproof device on mechanical arm, but after long time underwater operation, it is also easy to produce water seepage or water immersion phenomenon, to cause the damage of internal structure, cause greater loss.

[0003] The utility model discloses a kind of underwater mechanical arm sealing structure in prior art with patent number CN210998825U, protective tube is used to protect mechanical arm, isolate the contact of mechanical arm and water or reduce the contact area of water and mechanical arm, reduce the corrosion of water to mechanical arm, prolong the service life of mechanical arm, ensure the normal progress of engineering.But, the outer portion of dynamic sealing member and mechanical arm is in sliding connection in this prior art scheme, its sliding gap is relatively large, very easy to leak, for this, design needs to be optimized and improved to solve this problem. UTILITY MODEL CONTENT

[0004] According to the above existing technical problems, the utility model provides a kind of sealing structure of underwater mechanical arm, by using protective tube to make mechanical arm and water isolate and reduce its corrosion damage condition, and fixed sealing end cover using screw installation mode at the port of protective tube, prevent water from entering the port, and design sealing assembly to enhance the sealing property of sealing end cover and mechanical arm connection place.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A kind of sealing structure of underwater mechanical arm, characterized by including mounting plate and protective tube, one end of the protective tube is welded and fixed on mounting plate, the inside of the protective tube is extended by mechanical arm and the outside of mechanical arm is provided with bearing, the bearing is installed in the protective tube, the other end port of the protective tube is provided with connecting thread in inner wall and is threadedly connected with sealing end cover, the center position of the sealing end cover is provided with center through-hole and the hole diameter of center through-hole is adapted to the outer diameter of mechanical arm, so that mechanical arm is penetrated through from the center through-hole of sealing end cover, the center through-hole of the sealing end cover is provided with sealing assembly at the hole mouth,

[0007] The inside of the protective tube is provided with fixing ring on the side of connecting thread, the front end of the sealing end cover is provided with sealing rubber ring,

[0008] The sealing assembly is composed of a sealing ring, an inflatable air bag, an inflation pipe, an inflation nozzle and a sealing cover, the sealing ring is fixed on the sealing end cover, a through hole is arranged on the sealing ring and the hole diameter of the through hole is matched with the outer diameter of the mechanical arm, the inflatable air bag is arranged in the mounting groove on the hole wall of the through hole of the sealing ring, the inflatable air bag is connected with the inflation nozzle through the inflation pipe, and the sealing cover is threadedly mounted on the inflation nozzle.

[0009] Further, the inner side of the sealing cover is provided with a sealing plunger matched with an inflation hole arranged on the inflation nozzle.

[0010] The sealing structure of the underwater mechanical arm has the advantages that the protective tube is arranged on the outer side of the mechanical arm to protect the mechanical arm and isolate the mechanical arm from water, thereby reducing the corrosion and damage of the mechanical arm, the sealing end cover is fixed on the port of the protective tube in a threaded mounting mode, the inner side surface of the sealing end cover is provided with a sealing rubber ring, when the sealing end cover is screwed into the protective tube, the sealing rubber ring is pressed against the fixing ring arranged in the protective tube along with the screwing of the sealing end cover, thereby sealing the port of the protective tube and preventing water from entering the tube from the port.

[0011] The sealing structure of the underwater mechanical arm has the advantages that the protective tube is arranged on the outer side of the mechanical arm to protect the mechanical arm and isolate the mechanical arm from water, thereby reducing the corrosion and damage of the mechanical arm, the sealing end cover is fixed on the port of the protective tube in a threaded mounting mode, the inner side surface of the sealing end cover is provided with a sealing rubber ring, when the sealing end cover is screwed into the protective tube, the sealing rubber ring is pressed against the fixing ring arranged in the protective tube along with the screwing of the sealing end cover, thereby sealing the port of the protective tube and preventing water from entering the tube from the port.

[0012] The sealing structure of the underwater mechanical arm has the advantages that the protective tube is arranged on the outer side of the mechanical arm to protect the mechanical arm and isolate the mechanical arm from water, thereby reducing the corrosion and damage of the mechanical arm, the sealing end cover is fixed on the port of the protective tube in a threaded mounting mode, the inner side surface of the sealing end cover is provided with a sealing rubber ring, when the sealing end cover is screwed into the protective tube, the sealing rubber ring is pressed against the fixing ring arranged in the protective tube along with the screwing of the sealing end cover, thereby sealing the port of the protective tube and preventing water from entering the tube from the port. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the sealing structure of the underwater mechanical arm;

[0014] Figure 2 It is a local structure schematic view of the sealing structure of the underwater mechanical arm at A;

[0015] Figure 3 It is a sectional structure schematic view of the sealing structure of the underwater mechanical arm when the sealing end cover is installed;

[0016] Figure 4The utility model relates to a sealing assembly of the sealing structure of underwater mechanical arm's cross section structure schematic view, as shown in the figure: 100. Mechanical arm, 1. Mounting plate, 2. Protective tube, 21. Connecting thread, 3. Bearing, 4. Sealing end cover, 41. Sealing rubber ring, 5. Fixed ring, 61. Sealing ring, 62. Inflatable air bag, 63. Inflating pipe, 64. Inflating nozzle, 641. Inflating hole, 65. Sealing cover, 651. Sealing plunger. DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be described below in connection with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0018] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0019] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Embodiment 1

[0021] As shown in the figure, one end of the protective tube 2 is welded and fixed on the mounting plate 1, the inside of the protective tube 2 is inserted by the mechanical arm 100, and the outside of the mechanical arm 100 is provided with a bearing 3, the bearing 3 is installed in the protective tube 2, and a lubricant is arranged at the connection between the bearing and the protective tube 2, reducing the friction between the bearing 3 and the mechanical arm 100,

[0022] As Figure 3The other end of the protective tube 2 is provided with a connecting thread 21 on the inner wall of the port and is matched with the sealing end cover 4, so that the two are screwed together. The sealing end cover 4 is provided with a central through hole at the center position and the hole diameter is matched with the outer diameter of the mechanical arm 100, so that the mechanical arm 100 penetrates through the central through hole of the sealing end cover 4. The sealing end cover 4 is provided with a sealing rubber ring 41 at the front end, and a fixing ring 5 is arranged inside the protective tube 2 beside the connecting thread 21. After the sealing end cover 4 is screwed on the port of the protective tube 2, the sealing rubber ring 41 on the front side of the sealing end cover 4 is pressed against the fixing ring 5 in the protective tube 2, further enhancing the sealing performance of the port of the protective tube 2.

[0023] As Figure 2 and 4 A sealing assembly is arranged at the opening of the central through hole of the sealing end cover 4, which is composed of a sealing ring 61, an inflatable air bag 62, an inflation tube 63, an inflation nozzle 64 and a sealing cover 65. The sealing ring 61 is fixed on the sealing end cover 4 and is provided with a through hole whose hole diameter is matched with the outer diameter of the mechanical arm 100. The inflation air bag 62 is arranged in the mounting groove on the hole wall of the through hole of the sealing ring 61. The inflation air bag 62 is connected with the inflation nozzle 64 through the inflation tube 63, and the sealing cover 65 is screwed on the inflation nozzle 64. Further, the inner side of the sealing cover 65 is provided with a sealing plunger 651 which is matched with the inflation hole 641 arranged on the inflation nozzle 64.

[0024] Embodiment 2

[0025] The mechanical arm 100 is protected by arranging the protective tube 2 outside the mechanical arm 100, so that it is isolated from water, thereby reducing the corrosion damage problem of the mechanical arm. The sealing end cover 4 is fixed by screwing at the port of the protective tube 2, and the inner side of the sealing end cover 4 is provided with a sealing rubber ring 41. When the sealing end cover 4 is screwed into the protective tube 2, the sealing rubber ring 41 is pressed against the fixing ring 5 arranged in the protective tube 2 as the sealing end cover 4 is screwed in, thereby sealing the port of the protective tube and preventing water from entering the tube from the port;

[0026] A sealing assembly is arranged at the connection between the sealing end cover 4 and the mechanical arm 100. The inflation air bag 62 is arranged in the sealing ring 61 of the sealing assembly. After the sealing end cover 4 is installed and the mechanical arm 100 penetrates through the sealing end cover 4 and the sealing ring 61, the inflation air bag 62 is inflated by using an inflation device. The inflation air bag 62 is inflated to abut against the outer wall of the mechanical arm 100, thereby enhancing the sealing performance of the contact position between the sealing assembly and the mechanical arm. After the inflation is completed, the sealing cover 65 at the inflation nozzle 64 is installed, so that the sealing plunger on the sealing cover 65 is inserted into the inflation hole 641 of the inflation nozzle 64, preventing air leakage or water ingress at the inflation nozzle 64.

[0027] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The various components mentioned in the utility model are common technology in the prior art, which should be understood by the skilled person in the industry. The utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A seal structure of an underwater robot arm, characterized by The utility model provides a kind of mechanical arm protection device, including installation plate and protective tube, one end of the protective tube is welded and fixed on installation plate, the inside of the protective tube is inserted by mechanical arm, and the outside of mechanical arm is equipped with bearing, the bearing is installed in protective tube, the other end port inner wall of the protective tube is equipped with connecting thread, and it is connected with sealing end cap thread, the center position of the sealing end cap is equipped with center through-hole, and the hole diameter of center through-hole is adapted to the outer diameter of mechanical arm, so that mechanical arm is penetrated through from the center through-hole of sealing end cap, and the orifice of the center through-hole of sealing end cap is equipped with sealing assembly.

2. The seal structure of an underwater robot arm according to claim 1, characterized in that The inside of the protective tube is equipped with fixing ring on the side of connecting thread, and the front end of the sealing end cap is equipped with sealing rubber ring.

3. The seal structure of an underwater robotic arm according to claim 1, wherein The sealing assembly is composed of sealing ring, inflatable air bag, inflation tube, inflation nozzle and sealing cover, the sealing ring is fixed on the sealing end cap, the sealing ring is equipped with through-hole, and the hole diameter of through-hole is adapted to the outer diameter of mechanical arm, the inflation air bag is loaded in the installation slot on the hole wall of the through-hole of the sealing ring, the inflation air bag is connected with inflation nozzle through inflation tube, and the sealing cover is threadedly installed on the inflation nozzle.

4. The seal structure of an underwater robot arm according to claim 3, characterized in that The inner side of the sealing cover is provided with sealing plunger, and the sealing plunger is adapted to the inflation hole on the inflation nozzle.

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