A wire winding fatigue test device
By using an electromagnetic clutch and torque limiter in the wire winding fatigue testing device, combined with the control of the blocking element and limit switch, the problems of low efficiency and poor reliability in the prior art are solved, and more efficient and reliable wire winding operation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HUAXUN CLEANING MACHINERY
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
Smart Images
Figure CN224456233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fatigue testing technology, and in particular to a wire fatigue testing device. Background Technology
[0002] Wall-mounted cleaning machines refer to high-pressure cleaners that are installed on walls. They generally include a winding mechanism for winding up the high-pressure water hose. In most cases, fatigue testing of this winding mechanism is done manually, mainly by manually pulling out the hose and then activating the winding mechanism to automatically wind it back. This results in low overall testing efficiency. Another existing technology uses a controller to control a motor to drive a drum to pull out the hose, and then the controller controls the winding mechanism to automatically wind the hose back, repeating the cycle. However, this structure is prone to damage to both the motor and the winding mechanism when the hose gets stuck, resulting in low overall reliability. Utility Model Content
[0003] The technical solution to be solved by this utility model is to provide a wire fatigue testing device with high reliability.
[0004] The technical solution adopted by this utility model is: a wire fatigue testing device, including a workbench, a controller, a drum fixed on the workbench, and a motor for driving the drum to rotate. The motor is electrically connected to the controller. It also includes an electromagnetic clutch and a torque limiter. The motor is connected to the drum through the electromagnetic clutch and the torque limiter, and the electromagnetic clutch is electrically connected to the controller.
[0005] Preferably, it also includes a bracket fixed to the workbench, a guide rod mounted on the bracket, and a slider slidably connected to the guide rod. A first spring and a second spring are fitted onto the guide rod. One end of the first spring abuts against one end of the slider, and the other end abuts against the bracket. One end of the second spring abuts against the other end of the slider, and the other end abuts against the bracket. The slider also has a through hole for a pipeline to pass through. A trigger block is provided on one side of the slider. Limit switches, a first limit switch and a second limit switch, are provided at both ends of the bracket. A first blocking member and a second blocking member are fixed on the pipeline. Both the first limit switch and the second limit switch are electrically connected to the controller.
[0006] When the cable needs to be wound, the controller controls the winding mechanism to de-energize and simultaneously controls the electromagnetic clutch to energize. Then, the controller controls the motor to work and drive the drum to rotate. When the cable in the winding mechanism is about to be completely pulled out, the first blocking component on the cable will push the slider, which will then touch the first limit switch, energizing the first limit switch and causing the controller to control the motor to stop working.
[0007] When the cable needs to be wound up, the controller de-energizes the electromagnetic clutch and simultaneously energizes the winding mechanism. The winding mechanism starts winding the cable. When the cable in the drum is about to be completely wound up, the second blocking component on the cable pushes the slider, causing the slider to touch the second limit switch, which then energizes the second limit switch. The controller then de-energizes the winding mechanism.
[0008] Preferably, the through hole wall is provided with multiple rollers that roll in contact with the pipeline.
[0009] Preferably, there are two guide rods, which are fixed parallel to each other on the bracket, and the slider is slidably connected to the two guide rods.
[0010] Compared with the prior art, the present invention has the following advantages: a torque limiter is provided, so that when the pipe is jammed, the torque limiter will disconnect the connection between the drum and the motor, which can effectively protect the motor and the winding mechanism, resulting in better overall reliability. In addition, an electromagnetic clutch is provided, which can conveniently control the connection between the motor and the drum. That is, when it is necessary to take the tube in, the electromagnetic clutch can be disengaged, and when it is necessary to wind the tube, the electromagnetic clutch can be engaged, which makes the overall testing efficiency higher.
[0011] By coordinating the blocking components, trigger blocks, and limit switches, it is easy to determine whether the tube winding or retraction is complete, making the control more accurate.
[0012] Rollers are installed around the wall of the through hole to reduce friction between the pipeline and the through hole, making it easier for the pipeline to pass through.
[0013] Setting two guide rods can better guide the slider. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a wire fatigue testing device.
[0015] Figure 2 This is a schematic diagram of a part of a wire fatigue testing device.
[0016] Figure 3 This is a schematic diagram of another part of a wire fatigue testing device.
[0017] As shown in the figure: 1. Workbench; 2. Drum; 3. Motor; 4. Electromagnetic clutch; 5. Torque limiter; 6. Bracket; 7. Guide rod; 8. Slider; 9. First spring; 10. Second spring; 11. Through hole; 12. Trigger block; 13. First limit switch; 14. Second limit switch; 15. Roller; 16. Winding mechanism; 17. Pipeline. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0019] Example 1:
[0020] A wire fatigue testing device includes a workbench 1, a controller, a drum 2, a motor 3, an electromagnetic clutch 4, a torque limiter 5, and a pipeline 17 position detection mechanism, wherein:
[0021] Drum 2 is fixed on workbench 1 for winding pipeline 17;
[0022] Motor 3 is a servo motor 3, used to drive the drum 2 to rotate and wind the pipeline 17;
[0023] The electromagnetic clutch 4 is connected to the output shaft of the motor 3 and can be controlled by a controller to control whether the motor 3 is connected to the drum 2. Since the electromagnetic clutch 4 is conventional in the prior art, it is not described in detail in this embodiment.
[0024] The torque limiter 5, connected at one end to the output end of the electromagnetic clutch 4 and at the other end to the drum 2, is a friction-type torque limiter. When overload or mechanical failure causes the required torque to exceed the set value, it limits the torque transmitted by the transmission system by slipping. It automatically reconnects when the overload condition disappears. This prevents mechanical damage and avoids costly downtime losses. The torque limiter uses a spring-loaded friction surface, with the spring force adjusted by a nut or bolt, and its slip torque preset. Since this is a conventional product in existing technology, it is not discussed in detail here.
[0025] The pipeline 17 position detection mechanism includes a bracket 6, a guide rod 7, a slider 8, a first limit switch 13, a second limit switch 14, a first spring 9, a second spring 10, a first blocking element, a second blocking element, and a trigger block 12, wherein:
[0026] The bracket 6 is fixed on the workbench 1, and its upper part is provided with two Y-shaped frames for connecting two guide rods 7;
[0027] There are two guide rods 7, which are fixed on both sides of the upper part of the bracket 6 respectively, and are used to allow the slider 8 to slide on the two guide rods 7;
[0028] The slider 8 is slidably connected to the two guide rods 7;
[0029] The first spring 9 is sleeved on one end of the slider 8. One end of the first spring 9 abuts against the bracket 6, and the other end abuts against one end of the slider 8.
[0030] The second spring 10 is sleeved on the other end of the slider 8. One end of the second spring 10 abuts against the bracket 6, and the other end abuts against the other end of the slider 8.
[0031] The first blocking element is set at the position where the pipeline 17 is about to be fully pulled out, and is used to block one end of the slider 8 and thus push the slider 8.
[0032] The second blocking element is located at the position where the pipeline 17 is about to be fully retracted, and is used to block the other end of the slider 8 and thus push the slider 8.
[0033] Trigger block 12 is fixed to one side of slider 8 and is used to trigger the limit switch;
[0034] The first limit switch 13 is set on one side of the bracket 6 and on the side of the slider 8. When the tube 17 is about to be fully pulled out, the first blocking member will press against one end of the slider 8 and push the slider 8. At this time, the trigger block 12 on the side of the slider 8 will trigger the first limit switch 13, and the controller will control the motor 3 to stop working and complete the tube winding.
[0035] The second limit switch 14 is located on one side of the bracket 6 and on the other side of the slider 8. When the cable 17 is about to be fully retracted, the second blocking member will press against the other end of the slider 8 and push the slider 8. At this time, the trigger block 12 on one side of the slider 8 will trigger the second limit switch 14, and the controller will control the winding mechanism 16 to cut off the power and complete the cable winding.
[0036] The working principle of this embodiment is as follows: When it is necessary to wind the tube, the controller controls the winding mechanism 16 to be de-energized and the electromagnetic clutch 4 to be energized. Then, the motor 3 can be controlled to work and drive the drum 2 to rotate. When the tube 17 in the winding mechanism 16 is about to be fully pulled out, the first blocking member on the tube 17 will push the slider 8, which will cause the trigger block 12 on the slider 8 to touch the first limit switch 13, so that the first limit switch 13 is energized. At this time, the controller controls the motor 3 to stop working and completes the winding of the tube.
[0037] When it is time to reel in the cable, the controller de-energizes the electromagnetic clutch 4 and simultaneously energizes the winding mechanism 16. The winding mechanism 16 starts winding the cable. At this time, the motor 3 and the drum 2 are separate, so the drum 2 can be easily pulled by the winding mechanism 16. When the cable 17 in the drum 2 is about to be completely reeled in, the second blocking member on the cable 17 will push the slider 8, which will cause the trigger block 12 of the slider 8 to touch the second limit switch 14, energizing the second limit switch 14. The controller then de-energizes the winding mechanism 16, completing the cable reeling process.
[0038] Furthermore, when overload or mechanical failure causes the required torque to exceed the set value, the torque limiter 5 will disconnect, which can also effectively protect the motor 3 and the winding mechanism 16.
[0039] Example 2 differs from Example 1 in that it does not include a pipeline position detection mechanism. Instead, it relies on time to control the winding and retraction of the pipe. This structure is simpler, but its accuracy is not as precise as that of Example 1.
[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
[0041] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.
Claims
1. A wire fatigue testing device, comprising a workbench (1), a controller, a spool (2) fixed on the workbench (1), and a motor (3) for driving the spool (2) to rotate, wherein the motor (3) is electrically connected to the controller, characterized in that: It also includes an electromagnetic clutch (4) and a torque limiter (5), the motor (3) being connected to the drum (2) via the electromagnetic clutch (4) and the torque limiter (5), and the electromagnetic clutch (4) being electrically connected to the controller.
2. A wire fatigue testing device according to claim 1, characterized in that: It also includes a bracket (6) fixed on the workbench (1), a guide rod (7) set on the bracket (6), and a slider (8) slidably connected to the guide rod (7). A first spring (9) and a second spring (10) are also sleeved on the guide rod (7). One end of the first spring (9) abuts against one end of the slider (8), and the other end of the first spring (9) abuts against the bracket (6). One end of the second spring (10) abuts against the other end of the slider (8), and the other end of the second spring (10) abuts against the bracket (6). The slider (8) is also provided with a through hole (11) for the pipeline (17) to pass through. A trigger block (12) is provided on one side of the slider (8). Limit switches are provided at both ends of the bracket (6), namely a first limit switch (13) and a second limit switch (14). A first blocking member and a second blocking member are fixed on the pipeline (17). The first limit switch (13) and the second limit switch (14) are both electrically connected to the controller. When the winding mechanism (16) is about to be fully pulled out, the controller controls the winding mechanism (16) to be de-energized and the electromagnetic clutch (4) to be energized. Then the controller controls the motor (3) to work and drive the drum (2) to rotate. When the wire (17) in the winding mechanism (16) is about to be fully pulled out, the first blocking member on the wire (17) will push the slider (8), which will cause the slider (8) to touch the first limit switch (13), which will energize the first limit switch (13) and the controller controls the motor (3) to stop working. When the cable needs to be wound up, the controller controls the electromagnetic clutch (4) to de-energize and simultaneously controls the winding mechanism (16) to energize. The winding mechanism (16) starts winding. When the cable (17) in the drum (2) is about to be completely wound up, the second blocking member on the cable (17) will push the slider (8), which will cause the slider (8) to touch the second limit switch (14), energizing the second limit switch (14). The controller then controls the winding mechanism (16) to de-energize.
3. A wire fatigue testing device according to claim 2, wherein: The through hole (11) is surrounded by multiple rollers (15) that roll in contact with the pipeline (17).
4. A wire fatigue testing device according to claim 2, wherein: There are two guide rods (7), and the two guide rods (7) are fixed parallel to each other on the bracket (6). The slider (8) is slidably connected to the two guide rods (7).