Steel wire rope breakage detection micro switch structure

Abstract

The utility model relates to steel wire rope broken rope detection technical field, specifically disclose a kind of steel wire rope broken rope detection microswitch structure, comprising: mounting bracket, tensioning rod is equipped in mounting bracket, tensioning rod outside is equipped with switch support, microswitch is fixedly connected on switch support, microswitch outside is equipped with trigger assembly, trigger assembly triggers microswitch transmission signal, tensioning rod outside is equipped with movable assembly, movable assembly passes on the movement of tensioning rod to trigger assembly, movable assembly below is equipped with auxiliary assembly, auxiliary assembly assists triggering microswitch, cooperate by setting movable assembly and trigger assembly, rely on lever mechanism and convert mechanical displacement into electric signal, and realize the transmission of signal, by setting auxiliary assembly, construct redundancy trigger design, completely avoid missed detection to block broken rope and cause chain accident, overall have high safety, reliability, adaptability and practicality, fully satisfy industrial broken rope detection demand.

Description

Technical Field

[0001] This utility model relates to the field of wire rope breakage detection technology, specifically a micro switch structure for wire rope breakage detection. Background Technology

[0002] Steel wire rope is a flexible component made of multiple strands of high-strength steel wires twisted together. It has the characteristics of high strength, wear resistance and bendability. It is widely used in the load-bearing and transmission of industrial equipment such as cranes and elevators, as well as in civil fixed hoisting scenarios. It is a key component for realizing tensile transmission and load-bearing of heavy objects. Its operating status is directly related to the safety of equipment and the safety of people's lives.

[0003] Existing wire ropes may break or fall off during operation for various reasons. Since there is no corresponding alarm or warning, it is impossible to know that an accident has occurred. Continued operation may lead to equipment damage, and in severe cases, it may lead to major safety accidents and trigger a series of more problems. To address this, we propose a micro switch structure for wire rope breakage detection. Utility Model Content

[0004] The purpose of this utility model is to provide a micro switch structure for detecting broken wire ropes, in order to solve the problem mentioned in the background art that existing wire ropes may break or fall off during operation for some reason. At this time, because there is no corresponding alarm or reminder, it is impossible to know that an accident has occurred. Continued operation may lead to equipment damage, and in severe cases, it may easily lead to major safety accidents and trigger a series of more problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a micro switch structure for detecting broken wire rope, comprising: a mounting bracket, a tensioning rod inside the mounting bracket, a switch bracket outside the tensioning rod, a micro switch fixedly connected to the switch bracket, a triggering component outside the micro switch, the triggering component triggering the micro switch to transmit a signal, a movable component outside the tensioning rod, the movable component transmitting the movement of the tensioning rod to the triggering component, and an auxiliary component below the movable component, the auxiliary component assisting in triggering the micro switch.

[0006] The movable component includes a slack rope detection pressure plate that is slidably connected to the tensioning rod. A hexagonal nut is located below the slack rope detection pressure plate and is threadedly connected to the tensioning rod.

[0007] The triggering component includes a pull rod fixedly connected to a slack rope detection pressure plate, a movable rod fixedly connected to the other end of the pull rod, a rotating rod rotatably connected to the middle of the movable rod, a first spring fixedly connected to the end of the movable rod away from the pull rod, the other end of the first spring fixedly connected to the lower surface of the inner wall of the micro switch, a movable block provided on the side of the pull rod away from the first spring, a trigger block provided on the side of the movable block away from the movable rod, and the trigger block fixedly connected to the upper surface of the inner wall of the micro switch.

[0008] The auxiliary component includes a pin that is fixedly connected to the slack rope detection pressure plate. A second spring is fixedly connected to one end of the pin away from the micro switch, and a spring mounting plate is fixedly connected to the other end of the second spring.

[0009] The spring mounting plate has mounting holes.

[0010] The second spring is fitted with a spring protective tube on its outer side, and the second spring is in a stretched state after installation.

[0011] The switch bracket has a waist-shaped hole.

[0012] This utility model has at least the following beneficial effects: In use, this utility model uses a combination of movable and triggering components to convert mechanical displacement into electrical signals via a lever mechanism and transmit the signals. By setting auxiliary components and constructing a redundant triggering design, it completely avoids missed detections and prevents chain accidents caused by rope breakage. The whole system has high safety, reliability, adaptability and practicality, and fully meets the needs of industrial rope breakage detection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view schematic diagram of the overall structure of this utility model; Figure 3 This is a side view of the overall structure of this utility model; Figure 4 This is a schematic diagram of the triggering component of this utility model.

[0014] In the diagram: 1. Mounting bracket; 2. Tensioning rod; 3. Switch bracket; 4. Micro switch; 5. Trigger assembly; 51. Pull rod; 52. Movable rod; 53. Rotating rod; 54. First spring; 55. Movable block; 56. Trigger block; 6. Movable assembly; 61. Loose rope detection pressure plate; 62. Hexagonal nut; 7. Auxiliary assembly; 71. Pin; 72. Second spring; 73. Spring mounting plate; 8. Mounting hole; 9. Spring protective tube; 10. Waist-shaped hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1 Please see Figures 1 to 4 This utility model provides a technical solution: a micro switch structure for detecting broken wire ropes, comprising: a mounting bracket 1, a tensioning rod 2 inside the mounting bracket 1, a switch bracket 3 outside the tensioning rod 2, a micro switch 4 fixedly connected to the switch bracket 3, a triggering component 5 outside the micro switch 4, the triggering component 5 triggering the micro switch 4 to transmit a signal, a movable component 6 outside the tensioning rod 2, the movable component 6 transmitting the movement of the tensioning rod 2 to the triggering component 5, and an auxiliary component 7 below the movable component 6 assisting in triggering the micro switch 4. The mounting bracket 1 is made of high-strength steel plate, which can ensure the overall structural stability and sufficient load-bearing capacity. The tensioning rod 2 can slide smoothly up and down along the pre-set guide hole or guide sleeve of the mounting bracket 1 to sensitively respond to changes in wire rope tension. The switch bracket 3 provides a stable and precise installation reference for the micro switch 4. The micro switch 4 has an IP65 or higher protection rating, which can effectively adapt to harsh industrial environments such as dust and humidity. Triggering component 5 can efficiently and accurately convert external mechanical displacement into electrical signals and trigger micro switch 4 to send a detection signal to the electrical control box, thereby achieving the purpose of rope breakage detection. Movable component 6 can accurately transmit the displacement of tension rod 2 to triggering component 5, so that triggering component 5 triggers micro switch 4 to respond. Auxiliary component 7 can provide forced and redundant triggering force when the main triggering path fails due to jamming or wear, so as to ensure accurate response of the detection function.

[0017] The active component 6 includes a slack rope detection plate 61 slidably connected to the tensioning rod 2. A hexagonal nut 62 is located below the slack rope detection plate 61, and the hexagonal nut 62 is threadedly connected to the tensioning rod 2. The slack rope detection plate 61 is slidably connected to the tensioning rod 2 via a bushing or linear bearing to reduce friction and ensure smooth movement. The slack rope detection plate 61 is made of wear-resistant metal sheet, which effectively increases structural strength. The hexagonal nut 62, through its threaded engagement with the tensioning rod 2, can adjust the initial height of the slack rope detection plate 61 to accommodate different specifications of wire rope and equipment installation gaps, precisely set the trigger threshold, and also axially limit the slack rope detection plate 61 to prevent it from sliding freely due to vibration, ensuring stable detection position. Simultaneously, it can be used with anti-loosening washers and other components to resist nut loosening caused by industrial equipment vibration, preventing detection link failure, and ultimately providing a basic guarantee for timely and accurate detection of rope breakage. In use, under normal tension of the wire rope, the tensioning rod 2 is lifted to a stable position under the tension of the wire rope. At this time, the micro switch 4 maintains a normal signal. When the wire rope breaks or becomes slack, the tensioning rod 2 falls, causing the slack detection plate 61 to fall, thereby triggering the triggering component 5 and sending a detection signal to the electrical control box.

[0018] The trigger assembly 5 includes a pull rod 51 fixedly connected to the slack rope detection pressure plate 61. A movable rod 52 is fixedly connected to the other end of the pull rod 51. A rotating rod 53 is rotatably connected to the middle of the movable rod 52. A first spring 54 is fixedly connected to the end of the movable rod 52 away from the pull rod 51. The other end of the first spring 54 is fixedly connected to the lower surface of the inner wall of the micro switch 4. A movable block 55 is provided on the side of the pull rod 51 away from the first spring 54. A trigger block 56 is provided on the side of the movable block 55 away from the movable rod 52. The trigger block 56 is fixedly connected to the upper surface of the inner wall of the micro switch 4. The movable rod 52 is a rigid metal movable rod. The other end of the rotating rod 53 is connected to the housing or internal fixed fulcrum of the micro switch 4, thus forming a lever mechanism to amplify the minute displacement of the slack rope detection pressure plate 61, significantly improving the trigger sensitivity. The first spring 54 is made of a highly elastic and long-fatigue-life material, providing a reset function after triggering. Rapid switching of the circuit is achieved through the contact between the movable block 55 and the trigger block 56, thus triggering the signal. In normal use, the tension of the wire rope causes the slack detection pressure plate 61 to lift, and the pull rod 51 causes the movable rod 52 to rotate around the rotating rod 53 as the fulcrum. At this time, the movable block 55 and the trigger block 56 remain separated, and the micro switch 4 outputs a normal signal. When the wire rope breaks or slackens, the pressure plate falls, causing the pull rod 51 to move downward, thereby causing the movable block 55 to move upward under the action of the lever and contact the trigger block 56, thus responding to the signal and transmitting the signal. After the triggering is completed, the first spring 54 resets and pulls the movable block 55 away from the trigger block 56, completing the precise conversion from mechanical action to electrical signal and realizing the signal switching.

[0019] The auxiliary component 7 includes a pin 71 fixedly connected to the slack rope detection plate 61. A second spring 72 is fixedly connected to one end of the pin 71 away from the microswitch 4, and a spring mounting plate 73 is fixedly connected to the other end of the second spring 72. The pin 71 is made of high-strength steel, and its interference fit with the slack rope detection plate 61 ensures strong connection. The second spring 72 is made of high-strength alloy spring steel and provides a strong and reliable triggering force. The spring mounting plate 73 provides solid support and installation space for the second spring 72. When the slack rope detection plate 61 cannot fall freely due to prolonged contact with the welding frame, the tensile force of the second spring 72 pulls the pin 71, overcoming the jamming resistance of the slack rope detection plate 61 through forced tension, thereby causing the slack rope detection plate 61 to move downwards. This movement is then transmitted to the trigger component 5 to trigger the signal, forming a secondary backup after the main trigger fails, ensuring no rope breakage is missed.

[0020] The spring mounting plate 73 is provided with mounting holes 8. The design of mounting holes 8 allows for fine adjustment of the position of the spring mounting plate 73 during installation and debugging, thereby accurately setting the initial preload of the second spring 72 and ensuring its reliable operation under preset triggering conditions.

[0021] The second spring 72 is fitted with a spring guard tube 9 on its outer side, and the second spring 72 is in a stretched state after installation. The second spring 72 is a precision compression spring with high dimensional accuracy and stable elastic coefficient. The spring guard tube 9 is made of metal or wear-resistant plastic, which effectively prevents the spring from bending, twisting or interfering with other components during the stretching and contraction process, thereby ensuring its long-term working stability and service life. The second spring 72 is in a pre-stretched state after installation to provide sufficient initial tension to ensure that when the slack rope detection pressure plate 61 cannot fall smoothly due to prolonged contact with the welding frame and fails to detect the signal of the tension rod 2 falling, sufficient tension is provided to re-detect and provide feedback.

[0022] The switch bracket 3 has an oblong hole 10. The oblong hole 10 allows for fine adjustment of the horizontal or vertical position of the micro switch 4 during installation and debugging. This enables precise calibration of the relative position of the micro switch 4 and the trigger block 56 in the moving component 6, ensuring accurate triggering and eliminating inaccurate detection caused by manufacturing and installation errors.

[0023] When the entire system is in normal operation, the mounting bracket 1 provides a stable foundation, and the tension of the wire rope pulls the tensioning rod 2 upward. At this time, the movable block 55 of the triggering component 5 separates from the trigger block 56, and the micro switch 4 outputs a normal signal. Meanwhile, the auxiliary component 7 is in a standby state. When the wire rope breaks or slackens, the tensioning rod 2 loses its force and falls, causing the slack rope detection pressure plate 61 to move downward synchronously. This causes the triggering component 5 to move through a lever motion, causing the movable block 55 to press against the trigger block 56, thereby triggering a signal. If the slack rope detection pressure plate 61 becomes stuck and fails, the second spring 72 of the auxiliary component 7 generates a forced pulling force through the pin 71, overcoming the stuck resistance and causing the slack rope detection pressure plate 61 to move and trigger the micro switch 4. Ultimately, this achieves accurate detection and safety protection of the broken rope fault, preventing the spread of accidents.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire rope break detection micro switch structure, comprising: The mounting bracket is characterized in that: a tensioning rod is provided inside the mounting bracket, a switch bracket is provided outside the tensioning rod, a micro switch is fixedly connected to the switch bracket, a triggering component is provided outside the micro switch, the triggering component triggers the micro switch to transmit a signal, a movable component is provided outside the tensioning rod, the movable component transmits the movement of the tensioning rod to the triggering component, and an auxiliary component is provided below the movable component, the auxiliary component assists in triggering the micro switch.

2. The broken wire detection micro switch structure of the steel wire rope according to claim 1, characterized in that: The movable component includes a slack rope detection pressure plate that is slidably connected to the tensioning rod, and a hexagonal nut is provided below the slack rope detection pressure plate, which is threadedly connected to the tensioning rod.

3. The broken wire detection micro switch structure of steel wire rope according to claim 1, characterized in that: The triggering assembly includes a pull rod fixedly connected to a slack rope detection pressure plate, a movable rod fixedly connected to the other end of the pull rod, a rotating rod rotatably connected to the middle of the movable rod, a first spring fixedly connected to the end of the movable rod away from the pull rod, the other end of the first spring fixedly connected to the lower surface of the inner wall of the micro switch, a movable block provided on the side of the pull rod away from the first spring, a trigger block provided on the side of the movable block away from the movable rod, and the trigger block fixedly connected to the upper surface of the inner wall of the micro switch.

4. The broken wire detection micro switch structure of steel wire rope according to claim 1, characterized in that: The auxiliary component includes a pin that is fixedly connected to the slack rope detection pressure plate. A second spring is fixedly connected to one end of the pin away from the micro switch, and a spring mounting plate is fixedly connected to the other end of the second spring.

5. The broken wire detection micro switch structure of steel wire rope according to claim 4, characterized in that: The spring mounting plate is provided with mounting holes.

6. The broken wire detection micro switch structure of steel wire rope according to claim 4, characterized in that: The second spring is fitted with a spring guard tube on its outer side, and the second spring is in a stretched state after installation.

7. The broken wire detection micro switch structure of steel wire rope according to claim 1, characterized in that: The switch bracket has a waist-shaped hole.

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