A rotary joint service life testing device

Abstract

This utility model discloses a rotary joint service life testing device; belonging to the technical field of joint testing devices; its key technical features include a test chamber, the top of which is hinged with an L-shaped flip cover, and a control panel installed on the outside of the test chamber. This utility model, by setting a second clamping mechanism, uses a second motor to drive the first gear to rotate, thereby driving the outer and inner gear rings to rotate. The rotation of the inner gear ring drives multiple second gears to rotate synchronously, thereby driving multiple bidirectional lead screws to rotate synchronously. The rotation of the bidirectional lead screws causes two sliding sleeves to move relative to each other, and through the cooperation of push rods, drives the clamping plates to move towards the central axis, so that multiple sets of clamping plates move towards the central axis simultaneously, clamping the test joint. This greatly shortens the single clamping time and ensures that the axis of the test joint coincides with the rotation center, avoiding eccentric loads during high-speed rotation testing.

Description

Technical Field

[0001] This utility model relates to the technical field of joint testing devices, specifically a rotary joint service life testing device. Background Technology

[0002] Rotary joints can be categorized into water pipe, gas pipe, and cable conduit joints, and are mostly made from metal as the base material. After processing, a joint testing device is required to conduct random checks on the finished products to determine the service life of this batch of rotary joints and ensure the quality control of the rotary joint processing.

[0003] For example, Chinese patent CN222544975U discloses a rotary joint service life testing device, including a support plate, a mounting plate fixedly installed on one side of the top of the support plate, and a movable plate movably installed on the other side of the top of the support plate. A protective mechanism for personnel safety is fixedly installed on one side of the mounting plate. An electric rod is energized to move a bolt plate vertically, which in turn moves a protective box synchronously, causing the protective box to move down to surround the rotary joint under test. The downward movement of the protective box also moves an industrial camera synchronously, allowing for real-time monitoring of the rotary joint under test by the energized industrial camera, replacing manual observation by the operator. The combination of the electric rod and the protective box provides safety protection for the operator.

[0004] However, in practical applications, existing experimental devices require rotating both screws separately to drive the clamping plate to hold the test connector. Each clamping requires two independent adjustments, which is time-consuming. When the specifications of the test connector change, the clamping force of both screws needs to be repeatedly calibrated, making the operation process lengthy. Moreover, the screws are connected to the clamping plate through bearings, and the clamping plate is prone to deflection due to uneven force when the screws are rotated. This causes the axis of the test connector to not coincide with the rotation center, resulting in eccentric loads during high-speed rotation tests, leading to abnormal wear data. In this case, retesting is required. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a rotary joint service life testing device. This technical solution solves the problems mentioned in the background art, such as the need to rotate the two screws separately to drive the clamping plate to hold the test joint when using the existing experimental device, requiring two independent adjustments for each clamping, which is cumbersome and time-consuming. When the specifications of the test joint change, the clamping force of the two screws needs to be repeatedly calibrated, making the operation process lengthy. Moreover, the screws are connected to the clamping plate through bearings, and the clamping plate is prone to deflection due to uneven force when the screws are rotated. This causes the test joint axis to not coincide with the rotation center, resulting in eccentric loads during high-speed rotation testing, leading to abnormal wear data and requiring retesting.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A rotary joint service life testing device includes a test chamber, an L-shaped flip cover hinged to the top of the test chamber, a control panel installed on the outside of the test chamber, a mounting plate connected to the inside of the test chamber via a horizontal moving mechanism, a first motor installed on the right side of the mounting plate, a first clamping mechanism fixedly connected to the output end of the first motor, a second clamping mechanism aligned with the first clamping mechanism fixedly connected to the inner left side wall of the test chamber, the second clamping mechanism clamping the test joint inside, and an industrial camera installed on the inner top of the L-shaped flip cover.

[0008] Preferably, the second clamping mechanism includes a fixing ring, one end of which is integrally formed with a disc. The disc is fixedly connected to the inner left side wall of the test chamber. The inner wall of the fixing ring has several mounting grooves arranged in a ring array. A horizontally arranged bidirectional lead screw is rotatably connected in the mounting groove. Two sliding sleeves are threaded onto the bidirectional lead screw. A push rod is hinged to the side of the sliding sleeve near the axis of the fixing ring. The other ends of the two push rods are hinged to a clamping plate. One end of the fixing ring is provided with a synchronous drive assembly for driving the several bidirectional lead screws to rotate synchronously.

[0009] Preferably, mounting plates are fixedly connected to the four corners of the bottom of the test chamber, and positioning holes are provided on the mounting plates. Buffer pads are fixedly connected to both the mounting plates and the bottom of the test chamber.

[0010] Preferably, the front side of the L-shaped flip cover is provided with a transparent observation window, a handle is fixedly connected to the front side of the L-shaped flip cover near the bottom, a sleeve is fixedly connected to the front side of the test chamber, a hook that cooperates with the sleeve is rotatably connected to the front side of the L-shaped flip cover, and a handle is fixedly connected to the hook.

[0011] Preferably, the horizontal moving mechanism includes a lead screw rotatably connected to the inner wall of the test chamber and arranged horizontally, a third motor fixedly connected to the outer side of the test chamber, the third motor being electrically connected to the control panel, one end of the lead screw extending to the outer side of the test chamber and fixedly connected to the output end of the third motor, a slide rod parallel to the lead screw fixedly connected to the inner wall of the test chamber, a movable seat threadedly connected to the lead screw, the movable seat being slidably connected to the slide rod, and the mounting plate being fixedly connected to the top of the movable seat.

[0012] Preferably, the synchronous drive assembly includes an external gear ring rotatably connected to the end of the fixed ring away from the mounting plate, a second motor fixedly connected to the outer ring of the fixed ring, the second motor being electrically connected to the control panel, a first gear meshing with the external gear ring fixedly connected to the output end of the second motor, an internal gear ring coaxially fixedly connected to the inner ring of the external gear ring, and one end of several bidirectional lead screws extending to the outside of the fixed ring and fixedly connected to a second gear meshing with the internal gear ring.

[0013] Preferably, a guide rod parallel to the bidirectional lead screw is fixedly connected in the mounting groove, the sliding sleeve is slidably connected to the guide rod, and a flexible pad is fixedly connected to the clamping surface of the clamping plate.

[0014] Compared with the prior art, this utility model provides a rotary joint service life testing device, which has the following beneficial effects:

[0015] 1. This utility model, by setting a second clamping mechanism, uses a second motor to drive the first gear to rotate, thereby driving the outer gear ring and the inner gear ring to rotate. The rotation of the inner gear ring drives multiple second gears to rotate synchronously, thereby driving multiple bidirectional lead screws to rotate synchronously. The rotation of the bidirectional lead screws causes two sliding sleeves to move relative to each other. Through the cooperation of the push rod, the clamping plate moves towards the central axis, so that multiple sets of clamping plates move towards the central axis simultaneously to clamp the test connector. This greatly shortens the single clamping time and ensures that the axis of the test connector coincides with the rotation center, avoiding eccentric loads during high-speed rotation testing.

[0016] 2. The flip cover in this utility model is connected to the test chamber by a hinge, compared to the protective box in the existing device. With the help of the handle, it can be opened and closed quickly by hand. The flip cover design is more suitable for the efficiency requirements of frequent testing scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 In this utility model Figure 1 Enlarged view of point A;

[0019] Figure 3 This is a schematic diagram of the internal structure of the test chamber in this utility model;

[0020] Figure 4 This is a schematic diagram of the synchronous drive component in this utility model;

[0021] Figure 5 This is a schematic diagram of the bidirectional lead screw in this utility model.

[0022] The diagram is labeled as follows: 1. Test chamber; 2. L-shaped flip cover; 3. Control panel; 4. Horizontal moving mechanism; 401. Lead screw; 402. Third motor; 403. Slide rod; 404. Moving seat; 5. Mounting plate; 6. First motor; 7. First clamping mechanism; 8. Second clamping mechanism; 801. Fixing ring; 802. Mounting groove; 803. Bidirectional lead screw; 804. Sliding sleeve; 805. Push rod; 806. Clamping plate; 807. Synchronous drive assembly; 8071. External gear ring; 8072. Second motor; 8073. First gear; 8074. Internal gear ring; 8075. Second gear; 9. Test connector; 10. Industrial camera; 11. Mounting plate; 12. Positioning hole; 13. Buffer pad; 14. Transparent observation window; 15. Handle; 16. Sleeve; 17. Hook; 18. Grip bar; 19. Guide rod; 20. Flexible pad. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] Example 1

[0025] Please refer to Figures 1 to 5 As shown, a rotary joint service life testing device includes a test chamber 1, an L-shaped flip cover 2 hinged to the top of the test chamber 1, a control panel 3 installed on the outside of the test chamber 1, a mounting plate 5 connected to the inside of the test chamber 1 via a horizontal moving mechanism 4, a first motor 6 installed on the right side of the mounting plate 5, a first clamping mechanism 7 fixedly connected to the output end of the first motor 6, a second clamping mechanism 8 fixedly connected to the left inner wall of the test chamber 1 and aligned with the first clamping mechanism 7, the second clamping mechanism 8 clamps the test joint 9 inside, and an industrial camera 10 is installed on the inner top of the L-shaped flip cover 2. The first clamping mechanism 7 includes a fixed ring 801, one end of which is integrally formed with a disc. The disc is fixedly connected to the inner left side wall of the test chamber 1. The inner wall of the fixed ring 801 has several mounting grooves 802 arranged in a ring array. A horizontally arranged bidirectional lead screw 803 is rotatably connected in the mounting grooves 802. Two sliding sleeves 804 are threaded onto the bidirectional lead screw 803. A push rod 805 is hinged to the side of the sliding sleeve 804 near the axis of the fixed ring 801. The other ends of the two push rods 805 are hinged to a clamping plate 806. One end of the fixed ring 801 is provided with a synchronous drive assembly 807 that drives the several bidirectional lead screws 803 to rotate synchronously. The first motor 6 and the industrial camera 10 are both electrically connected to the control panel 3.

[0026] Those skilled in the art will understand that when the second clamping mechanism 8 is used, the test connector 9 is placed inside the fixed ring 801, and then multiple bidirectional lead screws 803 are driven to rotate synchronously by the synchronous drive assembly 807. The rotation of the bidirectional lead screws 803 causes the two sliding sleeves 804 to move relative to each other. Through the cooperation of the push rod 805, the clamping plate 806 is driven to move towards the center of the test connector 9. By having multiple sets of clamping plates 806 move towards the test connector 9 at the same time, the test connector 9 is clamped, thereby greatly shortening the operation time of a single clamping operation. At the same time, it ensures that the axis of the test connector 9 coincides with the rotation center, avoiding eccentric loads during high-speed rotation testing.

[0027] In addition, the first clamping mechanism 7 is used to clamp the rotary joint to be tested. The structure and working principle of the first clamping mechanism 7 are completely the same as those of the second clamping mechanism 8, so they will not be described in detail here.

[0028] Furthermore, during testing, by starting the first motor 6, the first clamping mechanism 7 and the rotary joint to be tested are driven to rotate at a set speed. The industrial camera 10 will take real-time pictures of the joint surface, and the data will be synchronously transmitted to the control panel 3 to analyze the wear status.

[0029] Example 2

[0030] Furthermore, mounting plates 11 are fixedly connected to the four corners of the bottom of the test chamber 1. Positioning holes 12 are provided on the mounting plates 11. Buffer pads 13 are fixedly connected to the bottom of the test chamber 1 and the mounting plates 11.

[0031] Those skilled in the art will understand that the buffer pad 13 at the bottom of the test chamber 1 can reduce the impact of vibration on the test connector 9 and reduce the data error rate.

[0032] Example 3

[0033] Furthermore, a transparent observation window 14 is provided on the front side of the L-shaped flip cover 2, a handle 15 is fixedly connected to the front side of the L-shaped flip cover 2 near the bottom, a sleeve 16 is fixedly connected to the front side of the test chamber 1, a hook 17 that cooperates with the sleeve 16 is rotatably connected to the front side of the L-shaped flip cover 2, and a handle 18 is fixedly connected to the hook 17.

[0034] Those skilled in the art will understand that the transparent observation window 14 supports real-time visual monitoring, and in conjunction with the high-definition shooting of the industrial camera 10 on the inner top, it is more intuitive than the single-camera monitoring of the comparison document protection box; the L-shaped flip cover 2 with hinged design and handle 15 enables quick opening and closing, adapting to high-frequency testing scenarios.

[0035] In addition, the sleeve 16 and hook 17 are used to lock the L-shaped flip cover 2 after it is closed.

[0036] Example 4

[0037] Furthermore, the horizontal moving mechanism 4 includes a lead screw 401 rotatably connected to the inner wall of the test chamber 1 and arranged horizontally. A third motor 402 is fixedly connected to the outer side of the test chamber 1. The third motor 402 is electrically connected to the control panel 3. One end of the lead screw 401 extends to the outer side of the test chamber 1 and is fixedly connected to the output end of the third motor 402. A slide rod 403 parallel to the lead screw 401 is also fixedly connected to the inner wall of the test chamber 1. A movable seat 404 is threadedly connected to the lead screw 401. The movable seat 404 is slidably connected to the slide rod 403. The mounting plate 5 is fixedly connected to the top of the movable seat 404.

[0038] Those skilled in the art will understand that the third motor 402 drives the lead screw 401 to rotate, causing the movable seat 404 to move horizontally along the slide bar 403, and causing the first clamping mechanism 7 to move towards the second clamping mechanism 8, so that the rotary joint to be tested held in the first clamping mechanism 7 moves to the side of the test joint 9 held in the second clamping mechanism 8 for rotation testing.

[0039] Example 5

[0040] Furthermore, the synchronous drive assembly 807 includes an external gear ring 8071 rotatably connected to one end of the fixed ring 801 away from the mounting plate 5. A second motor 8072 is fixedly connected to the outer ring of the fixed ring 801. The second motor 8072 is electrically connected to the control panel 3. A first gear 8073 that meshes with the external gear ring 8071 is fixedly connected to the output end of the second motor 8072. An internal gear ring 8074 is coaxially fixedly connected to the inner ring of the external gear ring 8071. One end of each of several bidirectional lead screws 803 extends to the outside of the fixed ring 801 and is fixedly connected to a second gear 8075 that meshes with the internal gear ring 8074.

[0041] Those skilled in the art will understand that the second motor 8072 drives the first gear 8073 to mesh with the outer gear ring 8071, thereby driving the coaxial inner gear ring 8074 to rotate, which in turn causes multiple second gears 8075 to synchronously drive the bidirectional lead screw 803 to rotate.

[0042] Example 6

[0043] Furthermore, a guide rod 19 parallel to the bidirectional lead screw 803 is fixedly connected inside the mounting groove 802, the sliding sleeve 804 is slidably connected to the guide rod 19, and a flexible pad 20 is fixedly connected to the clamping surface of the clamping plate 806.

[0044] Those skilled in the art will understand that the guide rod 19 in the mounting groove 802 forms a sliding constraint with the sliding sleeve 804, preventing the clamping plate 806 from rotating due to uneven force during clamping, ensuring that the axis of the test connector 9 coincides with the rotation center, and greatly reducing abnormal wear data caused by eccentric load in high-speed rotation testing.

[0045] In this embodiment, the control panel 3, the third motor 402, the second motor 8072, the first motor 6 and the industrial camera 10 used in this application are all existing technologies, and the connections between the components are also existing technologies. Therefore, their connection relationships and principles will not be described in detail here. In addition, in this embodiment, the lead screw 401 and the bidirectional lead screw 803 are both covered with lead screw protective sleeves to ensure that they can work normally and stably.

[0046] The working principle and usage procedure of this device are as follows: The device is fixed to a horizontal workbench using bolts via the mounting plates 11 and positioning holes 12 at the four corners of the bottom of the test chamber 1, ensuring the mounting plates 11 are flush with the workbench surface. The bottom buffer pad 13 absorbs external vibrations, preventing data errors caused by vibration during testing. The control panel 3 is connected to an external power supply. After starting the system, the control panel 3 automatically detects the operating status of the third motor 402, the second motor 8072, the first motor 6, and the industrial camera 10. After the indicator lights show normal operation, it enters standby mode. Then, the L-shaped flip cover 2 is opened, and the test connector 9 is placed into the fixing ring 801 of the second clamping mechanism 8. The second motor 8072 is started via the control panel 3. The second motor 8072 drives the first gear 8073 to mesh with the external gear ring 8071, driving the coaxial internal gear ring 8074 to rotate. This causes multiple second gears 8075 to synchronously drive the bidirectional lead screw 803 to rotate. The rotation of the bidirectional lead screw 803 drives two sliding sleeves 804 to move relative to each other along the guide rod 19, which is then transmitted through the push rod 80. 5. Push the clamping plate 806 towards the central axis. Multiple clamping plates 806 simultaneously clamp the test connector 9. The clamping force is buffered by the flexible pad 20 to ensure that the connector is not deformed. Then repeat the above synchronous clamping steps to clamp the rotary connector to be tested in the first clamping mechanism 7, ensuring that the axes of the two connectors are aligned. Then start the third motor 402. The lead screw 401 rotates and drives the moving seat 404 to move horizontally along the slide rod 403, so that the first clamping mechanism 7 on the mounting plate 5 is close to the second clamping mechanism 8. This moves the rotary connector to be tested clamped in the first clamping mechanism 7 to the side of the test connector 9 clamped in the second clamping mechanism 8 for rotation testing. Then close the L-shaped flip cover 2 and manually rotate the handle 18 to lock the hook 17 and the sleeve 16 to ensure that the L-shaped flip cover 2 will not open due to vibration during the test. Set the test parameters through the control panel 3, start the first motor 6, and drive the connector to be tested to rotate for testing. The industrial camera 10 will capture wear images in real time, and the data will be synchronously transmitted to the control panel 3 for easy observation and recording by the test personnel.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary joint service life test device comprising a test case (1), characterized in that, The test chamber (1) is hinged to an L-shaped flip cover (2) at the top. A control panel (3) is installed on the outside of the test chamber (1). The test chamber (1) is connected to a mounting plate (5) via a horizontal moving mechanism (4). A first motor (6) is installed on the right side of the mounting plate (5). A first clamping mechanism (7) is fixedly connected to the output end of the first motor (6). A second clamping mechanism (8) aligned with the first clamping mechanism (7) is fixedly connected to the left side wall inside the test chamber (1). The test connector (9) is clamped inside the second clamping mechanism (8). An industrial camera (10) is installed on the inner top of the L-shaped flip cover (2). The second clamping mechanism (8) includes a fixing ring (801), one end of which is integrally formed with a disc. The disc is fixedly connected to the inner left side wall of the test chamber (1). The inner wall of the fixing ring (801) is provided with a plurality of mounting grooves (802) arranged in a ring array. A horizontally arranged bidirectional lead screw (803) is rotatably connected in the mounting groove (802). Two sliding sleeves (804) are threaded on the bidirectional lead screw (803). A push rod (805) is hinged to the side of the sliding sleeve (804) near the axis of the fixing ring (801). The other ends of the two push rods (805) are hinged together with a clamping plate (806). One end of the fixing ring (801) is provided with a synchronous drive assembly (807) for driving the plurality of bidirectional lead screws (803) to rotate synchronously.

2. A rotary union service life test apparatus as set forth in claim 1, characterized by Mounting plates (11) are fixedly connected to the four corners of the bottom of the test chamber (1). Positioning holes (12) are provided on the mounting plates (11). Buffer pads (13) are fixedly connected to the bottom of the mounting plates (11) and the test chamber (1).

3. A rotary union service life test apparatus as set forth in claim 1 wherein, The L-shaped flip cover (2) has a transparent observation window (14) on its front side. A handle (15) is fixedly connected to the front side of the L-shaped flip cover (2) near the bottom. A sleeve (16) is fixedly connected to the front side of the test chamber (1). A hook (17) that cooperates with the sleeve (16) is rotatably connected to the front side of the L-shaped flip cover (2). A handle (18) is fixedly connected to the hook (17).

4. A swivel service life test device according to claim 1, characterized in that The horizontal moving mechanism (4) includes a lead screw (401) rotatably connected to the inner wall of the test chamber (1) and arranged horizontally. A third motor (402) is fixedly connected to the outer side of the test chamber (1). The third motor (402) is electrically connected to the control panel (3). One end of the lead screw (401) extends to the outer side of the test chamber (1) and is fixedly connected to the output end of the third motor (402). A slide rod (403) parallel to the lead screw (401) is also fixedly connected to the inner wall of the test chamber (1). A movable seat (404) is threaded onto the lead screw (401). The movable seat (404) is slidably connected to the slide rod (403). The mounting plate (5) is fixedly connected to the top of the movable seat (404).

5. A rotary union service life test apparatus as set forth in claim 1, characterized by The synchronous drive assembly (807) includes an external gear ring (8071) rotatably connected to the fixed ring (801) at the end away from the mounting plate (5). A second motor (8072) is fixedly connected to the outer ring of the fixed ring (801). The second motor (8072) is electrically connected to the control panel (3). A first gear (8073) that meshes with the external gear ring (8071) is fixedly connected to the output end of the second motor (8072). An internal gear ring (8074) is coaxially fixedly connected to the inner ring of the external gear ring (8071). One end of a plurality of bidirectional lead screws (803) extends to the outside of the fixed ring (801) and is fixedly connected to a second gear (8075) that meshes with the internal gear ring (8074).

6. A swivel service life test device according to claim 1, characterized in that A guide rod (19) parallel to the bidirectional lead screw (803) is fixedly connected in the mounting groove (802), the sliding sleeve (804) is slidably connected to the guide rod (19), and a flexible pad (20) is fixedly connected to the clamping surface of the clamping plate (806).

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