Plugging force test system for simulating application working condition
By conducting underwater plugging and unplugging force tests in a water tank simulating a turbid seawater environment, the problem of inaccurate test results in the existing technology is solved, more accurate plugging and unplugging force data collection is achieved, and the success rate of underwater robot operations and the stability of the equipment are ensured.
Patent Information
- Application Number
- CN202422943308.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The plugging and unplugging force test results performed by existing testing equipment on land are different from those under marine application conditions, and accurate plugging and unplugging force data cannot be obtained, especially due to the influence of water flow and sediment in the marine environment.
A plugging and unplugging force testing system simulating a turbid seawater environment was designed. By filling a water tank with turbid seawater, underwater plug and unplug tests of plugs and sockets were performed. Combined with a display and an insertion loss tester, a servo electric cylinder was used to drive the underwater plug to move. The stability and accuracy of the plugging and unplugging process were ensured by a force sensor and a fixed clamp.
The accuracy of the plug-in and pull-out force test is improved, and the data is closer to the actual application conditions, which ensures the success rate of underwater robot operations and extends the service life of the equipment by protecting the optical fiber and stabilizing the connection structure.
Smart Images
Figure CN223332499U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of cable connection testing, in particular to an insertion and extraction force testing system for simulating application working conditions. Background Art
[0002] The insertion and extraction forces of underwater pluggable connectors during the plugging and unplugging process are key connector specifications, impacting the underwater robot's ability to perform these operations and the connector's stability after insertion. Current testing equipment, primarily conducted on land, can only measure insertion and extraction forces during plugging and unplugging operations in air, significantly differing from the actual plugging and unplugging forces and connector plugging and unplugging environments experienced in many marine cable applications.
[0003] In marine applications, connectors are plugged and unplugged in seawater. During this process, the drainage and flow of water create resistance. Simultaneously, mud and sand stirred up from the seabed can enter the gap between the connector and the mating joint, affecting the actual insertion and extraction force. This results in inaccurate test results from existing testing methods that only consider plugging and unplugging in air. Summary of the Invention
[0004] The technical problem to be solved by the utility model is to provide an insertion force test system for simulating application working conditions, which can simulate turbid seawater environment and thereby improve the accuracy of insertion force test.
[0005] The technical solution adopted by the present invention to solve the above-mentioned problems is: a plugging and unplugging force testing system for simulating application conditions, including a water tank filled with turbid seawater, a test frame provided in the water tank, an underwater socket fixed to one end of the test frame, and an underwater plug movably connected to the other end of the test frame, the underwater plug is inserted into and unplugged from the underwater socket during movement, a display for displaying the plugging and unplugging force of the underwater plug is connected to one side of the underwater plug, an insertion and return loss tester for displaying the optical fiber loss during the plugging and unplugging process is connected between the underwater socket and the underwater plug, and the plug-in connection between the underwater plug and the underwater socket is arranged below the horizontal plane of the turbid seawater.
[0006] Compared with the existing technology, the advantages of the present invention are: by filling the water tank with turbid seawater to simulate the seawater operating environment, and then the plugging and unplugging processes of the underwater plug and underwater socket are carried out in turbid seawater, the detected plugging and unplugging forces and the optical fiber loss under the plugging and unplugging forces are closer to the actual application conditions, and the data is more accurate, thereby ensuring the success rate of the underwater robot's operation.
[0007] As an improvement of the present invention, a ribbon optical fiber is connected to the side of the underwater socket and the underwater plug, and the two ribbon optical fibers are respectively connected to the two poles of the insertion loss tester. The outer layer of the ribbon optical fiber is provided with a protective hose. Through the improvement, the insertion loss tester is used to detect optical fiber loss, so it needs to be connected with an optical fiber, and the protective hose is used to prevent the ribbon optical fiber from being corroded by turbid seawater and affecting the quality of use, so as to ensure the long-term use of the ribbon optical fiber.
[0008] As an improvement of the present invention, an end plate is provided at each end of the test frame, and multiple connecting rods are connected between the two end plates. One end of the test frame is fixedly connected to an underwater socket fixing plate for fixing the underwater socket, and the other end of the test frame is fixedly connected to a servo electric cylinder fixing plate, and the servo electric cylinder fixing plate is fixedly connected to a servo electric cylinder for driving the underwater plug to move. The underwater socket fixing plate and the servo electric cylinder fixing plate are both fixedly connected to multiple connecting rods. Through the improvement, through the design of multiple connecting rods, the stability of the relative position relationship between the two end plates, the underwater socket fixing plate, and the servo electric cylinder fixing plate can be guaranteed, thereby ensuring the accuracy of docking during plug and unplug testing.
[0009] As an improvement of the present invention, the mobile end of the servo electric cylinder is fixedly connected to a mobile connecting plate, the underwater plug is fixedly connected to the mobile connecting plate, and the mobile connecting plate is provided with a plurality of mobile connecting holes. The plurality of mobile connections are movably connected with a plurality of connecting rods in a one-to-one correspondence. Through the improvement, the mobile connection design of the mobile connecting plate and the plurality of connecting rods can ensure the movement stability of the mobile connecting plate, and then ensure the accuracy of the movement stability of the underwater plug, and the underwater plug will not tilt due to the underwater plug being away from the body of the servo electric cylinder, thereby ensuring the accuracy of the alignment of the underwater plug when plugging and unplugging.
[0010] As an improvement of the present invention, a force sensor is connected between the movable connecting plate and the underwater plug, and the force sensor is electrically connected to the display. Through the improvement, after the driving force of the servo electric cylinder is subjected to water resistance and mud resistance, the driving force of the servo electric cylinder cannot be directly used as the plugging and unplugging force of the underwater plug. Therefore, the force sensor and the display are added to specifically measure the actual force of the underwater plug during the plugging and unplugging process.
[0011] As an improvement of the present invention, a fixed clamp is further provided between the force sensor and the underwater plug, one end of the fixed clamp is fixed on the force sensor, and the other end of the fixed clamp is used to fix the underwater plug. Through the improvement, the connection between the force sensor and the underwater plug is achieved through the design of the fixed clamp. Conventional testing equipment purchased on the market for force sensors cannot be matched and connected with the underwater plug used for testing, so the purpose of connection is achieved through the design of the fixed clamp.
[0012] As an improvement of the present invention, a clamping frame is provided at one end of the underwater plug close to the fixed clamping claw, and the fixed clamping claw includes a connecting block, a fixed clamping claw and a movable clamping claw. The connecting block is used to be fixedly connected to the force sensor, and the fixed clamping claw and the movable clamping claw are arranged at the same end of the connecting block. The fixed clamping claw is fixedly connected to one side of the connecting block, and the movable clamping claw is movably connected to the other side of the connecting block. When the movable clamping claw approaches the fixed clamping claw, the fixed clamping frame is clamped. Through the improvement, the fixed clamping claw can fix the underwater plug.
[0013] As an improvement of the present invention, the test stand is placed vertically, the water tank is arranged at the bottom end of the test stand, the underwater socket is arranged in the water tank, the end plate arranged at one end of the underwater socket is abutted against the bottom of the water tank, and the end plate arranged at one end of the underwater plug is provided with a positioning hole, and the positioning hole is used to be fixedly connected to the support frame. Through the improvement, the underwater plug and the underwater socket are detected to be plugged and unplugged vertically underwater, and the design of the positioning hole can ensure that the test stand remains vertical to avoid tipping over during the test.
[0014] As an improvement of the present invention, the test stand is placed horizontally, the underwater socket and the underwater plug are both arranged in the water sink, the end plate arranged at one end of the underwater socket is abutted against one end of the water sink, and a positioning hole is provided on the end plate arranged at one end of the underwater plug, and the positioning hole is abutted against the other end of the water sink through an adjusting screw. Through the improvement, the underwater plug and the underwater socket are tested for horizontal plugging and unplugging underwater, and the design of the positioning hole and the adjusting screw can ensure the stability of the test stand in the water sink. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the connection structure when the underwater plug and the underwater socket are separated in the first embodiment of the present utility model.
[0016] Figure 2 It is a schematic diagram of the connection structure when the underwater plug and the underwater socket are docked in the first embodiment of the utility model.
[0017] Figure 3 It is a schematic diagram of the overall structure of the first embodiment of the present utility model.
[0018] Figure 4This is a schematic diagram of the fixed clamping jaw structure of the utility model.
[0019] Figure 5 This is a schematic diagram of the connection structure when the underwater plug and the underwater socket are docked in the second embodiment of the utility model.
[0020] Shown in the figure: 1. Water tank, 2. Test frame, 2.1. End plate, 2.1.1. Positioning hole, 2.1.2. Adjusting screw, 2.2. Connecting rod, 2.3. Underwater socket fixing plate, 2.4. Servo electric cylinder fixing plate, 2.5. Mobile connecting plate, 2.5.1. Mobile connecting hole, 3. Underwater socket, 4. Underwater plug, 4.1. Clamping frame, 5. Display, 6. Insertion loss tester, 7. Optical fiber ribbon, 8. Protective hose, 9. Servo electric cylinder, 10. Force sensor, 11. Fixed clamping jaw, 11.1. Connecting block, 11.2. Fixed jaw, 11.3. Moving jaw, 14. Support frame. DETAILED DESCRIPTION
[0021] The embodiments of the present invention will be further described below with reference to the accompanying drawings.
[0022] Example 1:
[0023] like Figure 1-3 As shown, a plugging and unplugging force testing system for simulating application conditions includes a water tank 1, which is filled with turbid seawater. A test frame 2 is provided in the water tank 1, and an underwater socket 3 is fixed to one end of the test frame 2. The other end of the test frame 2 is movably connected to an underwater plug 4, and the underwater plug 4 is inserted into and unplugged from the underwater socket 3 during movement. A display 5 for displaying the plugging and unplugging force of the underwater plug 4 is connected to one side of the underwater plug 4, and an insertion loss tester 6 for displaying the optical fiber loss during the plugging and unplugging process is connected between the underwater socket 3 and the underwater plug 4. The plugging point of the underwater plug 4 and the underwater socket 3 is set below the horizontal plane of the turbid seawater, and a ribbon optical fiber 7 is connected to the side of the underwater socket 3 and the underwater plug 4. The two ribbon optical fibers 7 are respectively connected to the two poles of the insertion and unplugging loss tester 6, and the outer layer of the ribbon optical fiber 7 is provided with a protective hose 8.
[0024] The two ends of the test frame 2 are respectively provided with an end plate 2.1, and four connecting rods 2.2 are connected between the two end plates 2.1. One end of the test frame 2 is fixedly connected to an underwater socket fixing plate 2.3 for fixing the underwater socket 3, and the other end of the test frame 2 is fixedly connected to a servo electric cylinder fixing plate 2.4, and the servo electric cylinder fixing plate 2.4 is fixedly connected to a servo electric cylinder 9 for driving the underwater plug 4 to move. The underwater socket fixing plate 2.3 and the servo electric cylinder fixing plate 2.4 are fixedly connected to multiple connecting rods 2.2. The test frame 2 is placed vertically to test and detect the vertical plugging and unplugging of the underwater plug 4 and the underwater socket 3 underwater. The water tank 1 is provided at the bottom end of the test frame 2. The lower socket 3 is arranged in the water tank 1, and the end plate 2.1 at one end of the underwater socket 3 is abutted against the bottom of the water tank 1. The end plate 2.1 at one end of the underwater plug 4 is provided with a positioning hole 2.1.1. The positioning hole 2.1.1 is used to be fixedly connected to the support frame 14 by screws. The screws are inserted from the end plate 2.1 toward the support frame 14. The insertion hole on the support frame 14 that matches the screw is a through hole and is not threadedly connected to the threaded section, but the matching diameter is matched. A positioning nut is threaded on the threaded section. When the threaded section is inserted into the support frame 14, the positioning nut is twisted toward the end plate 2.1 to fix the screw, thereby avoiding lifting the test frame 2 when fixing the test frame 2, and only ensuring the vertical stability of the test frame 2.
[0025] The mobile end of the servo electric cylinder 9 is fixedly connected to a mobile connecting plate 2.5, and the underwater plug 4 is fixedly connected to the mobile connecting plate 2.5. The mobile connecting plate 2.5 is provided with four mobile connecting holes 2.5.1. The four mobile connections are movably connected to the four connecting rods 2.2 in a one-to-one correspondence. A force sensor 10 is connected between the mobile connecting plate 2.5 and the underwater plug 4, and the force sensor 10 is electrically connected to the display 5.
[0026] like Figure 1-4As shown, a fixed clamping jaw 11 is further provided between the force sensor 10 and the underwater plug 4, one end of the fixed clamping jaw 11 is fixed on the force sensor 10, and the other end of the fixed clamping jaw 11 is used to fix the underwater plug 4. The underwater plug 4 is provided with a clamping frame 4.1 at one end close to the fixed clamping jaw 11, the fixed clamping jaw 11 includes a connecting block 11.1, a fixed claw 11.2 and a movable claw 11.3, the connecting block 11.1 is used to be fixedly connected to the force sensor 10, the fixed claw 11.2 and the movable claw 11.3 are arranged at the same end of the connecting block 11.1, the fixed claw 11.2 is fixedly connected to one side of the connecting block 11.1, and the movable claw 11.3 is movably connected to the other side of the connecting block 11.1, and the movable claw 11.3 and the connecting block 11.1 are connected by a matching wedge block and a wedge groove, and the movable claw 11.3 is clamped and fixed to the clamping frame 4.1 when it approaches the fixed claw 11.2. During installation, the clamping frame 4.1 is placed between the fixed claw 11.2 and the movable claw 11.3, and then the movable claw 11.3 is moved toward the fixed claw 11.2 by screwing the screw connecting the movable claw 11.3 and the fixed claw 11.2 until the movable claw 11.3 and the fixed claw 11.2 clamp and fix the clamping frame 4.1.
[0027] Example 2:
[0028] like Figure 5 As shown, the test stand 2 can also be placed horizontally to test and detect the horizontal insertion and removal of the underwater plug 4 and the underwater socket 3 underwater. The underwater socket 3 and the underwater plug 4 are both arranged in the water tank 1. The end plate 2.1 arranged at one end of the underwater socket 3 abuts against one end of the water tank 1. The end plate 2.1 arranged at one end of the underwater plug 4 is provided with a positioning hole 2.1.1. The positioning hole 2.1.1 abuts against the other end of the water tank 1 through an adjusting screw 2.1.2. The positioning hole 2.1.1 is a threaded hole. The adjusting screw 2.1.2 is threadedly inserted from the end plate 2.1 toward the other end of the water tank 1. The insertion end of the adjusting screw 2.1.2 is provided with a stop block. Two adjusting nuts are also provided on the threaded section of the adjusting screw 2.1.2. The two adjusting nuts are respectively arranged on either side of the end plate 2.1. When the stop block abuts against the other end of the water tank 1, the two adjusting nuts are screwed to move toward the end plate 2.1 and fix it, completing the fixation of the test stand 2 in the water tank 1. At the same time, a water-blocking cavity for placing the servo electric cylinder 9 is provided in the water tank 1 to ensure the safety of the servo electric cylinder 9 .
[0029] In the first embodiment, since only the optical fiber ribbon 7 connected to the underwater socket 3 is located underwater, the protective hose 8 is designed only on the optical fiber ribbon 7; while in the second embodiment, the optical fiber ribbon 7 connected to the underwater socket 3, the optical fiber ribbon 7 connected to the underwater plug 4, and the wires connected to the force sensor 10 are all located underwater, so the protective hose 8 needs to be installed in all three places.
[0030] During the use of the plugging and unplugging force testing system simulating application conditions, the servo electric cylinder 9 is controlled to drive the underwater plug 4 to insert into the underwater socket 3, and the actual insertion force of the underwater plug 4 is obtained by the display 5. At the same time, the insertion loss value of the optical fiber loss of the insertion and return loss tester 6 is read to determine whether the insertion force meets the insertion connection requirement. Then, the servo electric cylinder 9 is controlled to drive the underwater plug 4 to unplug the underwater socket 3, and the actual unplugging force of the underwater plug 4 is obtained by the display 5. At the same time, the return loss value of the optical fiber loss of the insertion and return loss tester 6 is read to determine whether the unplugging force meets the unplugging requirement. The insertion force and unplugging force of the servo electric cylinder are adjusted by the above method to obtain the insertion force range and unplugging force range that meet the allowable range of optical fiber loss, which are used as the operating standard of the underwater robot.
[0031] The above description is merely a description of the preferred embodiment of the present invention and should not be construed as limiting the claims. The present invention is not limited to the above embodiment, and variations in its specific structure are permitted. All variations within the scope of the independent claims of the present invention are within the scope of protection of the present invention.
Claims
1. A plugging and unplugging force testing system simulating application conditions, characterized by: The invention comprises a water tank (1), wherein the water tank (1) is filled with turbid seawater, and a test frame (2) is provided in the water tank (1), wherein an underwater socket (3) is fixed to one end of the test frame (2), and an underwater plug (4) is movably connected to the other end of the test frame (2), wherein the underwater plug (4) is inserted into and removed from the underwater socket (3) during movement, and a display (5) for displaying the magnitude of the plugging and unplugging force of the underwater plug (4) is connected to one side of the underwater plug (4), and an insertion loss tester (6) for displaying the optical fiber loss during the plugging and unplugging process is connected between the underwater socket (3) and the underwater plug (4), and the plugging point of the underwater plug (4) and the underwater socket (3) is arranged below the horizontal surface of the turbid seawater.
2. The insertion and extraction force testing system for simulating application conditions according to claim 1, characterized in that: The sides of the underwater socket (3) and the underwater plug (4) are both connected to a ribbon optical fiber (7), and the two ribbon optical fibers (7) are respectively connected to the two poles of the insertion loss tester (6). The outer layer of the ribbon optical fiber (7) is provided with a protective hose (8).
3. The insertion and extraction force testing system for simulating application conditions according to claim 1, characterized in that: An end plate (2.1) is provided at each end of the test frame (2), and a plurality of connecting rods (2.2) are connected between the two end plates (2.1). One end of the test frame (2) is fixedly connected to an underwater socket fixing plate (2.3) for fixing the underwater socket (3), and the other end of the test frame (2) is fixedly connected to a servo electric cylinder fixing plate (2.4). A servo electric cylinder (9) for driving the underwater plug (4) to move is fixedly connected to the servo electric cylinder fixing plate (2.4). The underwater socket fixing plate (2.3) and the servo electric cylinder fixing plate (2.4) are both fixedly connected to the plurality of connecting rods (2.2).
4. The insertion and extraction force testing system for simulating application conditions according to claim 3, characterized in that: The movable end of the servo electric cylinder (9) is fixedly connected to a movable connecting plate (2.5), the underwater plug (4) is fixedly connected to the movable connecting plate (2.5), the movable connecting plate (2.5) is provided with a plurality of movable connecting holes (2.5.1), and the plurality of movable connections are movably connected in a one-to-one correspondence with a plurality of connecting rods (2.2).
5. The insertion and extraction force testing system for simulating application conditions according to claim 4, characterized in that: A force sensor (10) is connected between the movable connecting plate (2.5) and the underwater plug (4), and the force sensor (10) is electrically connected to the display (5).
6. The insertion and extraction force testing system for simulating application conditions according to claim 5, characterized in that: A fixed clamping claw (11) is further provided between the force sensor (10) and the underwater plug (4); one end of the fixed clamping claw (11) is fixed to the force sensor (10), and the other end of the fixed clamping claw (11) is used to fix the underwater plug (4).
7. The insertion and extraction force testing system for simulating application conditions according to claim 6, characterized in that: A clamping frame (4.1) is provided at one end of the underwater plug (4) close to the fixed clamping claw (11); the fixed clamping claw (11) comprises a connecting block (11.1), a fixed claw (11.2) and a movable claw (11.3); the connecting block (11.1) is used for fixed connection to the force sensor (10); the fixed claw (11.2) and the movable claw (11.3) are provided at the same end of the connecting block (11.1); the fixed claw (11.2) is fixedly connected to one side of the connecting block (11.1); the movable claw (11.3) is movably connected to the other side of the connecting block (11.1); and when the movable claw (11.3) approaches the fixed claw (11.2), the clamping frame (4.1) is clamped and fixed.
8. The insertion and extraction force testing system for simulating application conditions according to claim 3, characterized in that: The test stand (2) is placed vertically, the water tank (1) is arranged at the bottom end of the test stand (2), the underwater socket (3) is arranged in the water tank (1), an end plate (2.1) arranged at one end of the underwater socket (3) abuts against the bottom of the water tank (1), and a positioning hole (2.1.1) is provided on the end plate (2.1) arranged at one end of the underwater plug (4), and the positioning hole (2.1.1) is used to be fixedly connected to the support frame (14) by screws.
9. The insertion and extraction force testing system for simulating application conditions according to claim 3, characterized in that: The test stand (2) is placed horizontally, the underwater socket (3) and the underwater plug (4) are both arranged in the water tank (1), an end plate (2.1) arranged at one end of the underwater socket (3) abuts against one end of the water tank (1), and a positioning hole (2.1.1) is provided on the end plate (2.1.1) arranged at one end of the underwater plug (4), and the positioning hole (2.1.1) abuts against the other end of the water tank (1) through an adjusting screw (2.1.2).