Multi-point induction type portal crane walking limit limiting device
By designing a walking limit device for multi-point induction door machine, using four sets of induction components and detection components to accurately sense the number of rotations of the cable reel, the traditional mechanical transmission limit device is easily rusted and fall off in humid environments. The problem has achieved higher stability and security.
Patent Information
- Application Number
- CN202421263664.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The limiting device of traditional chain mechanical transmission door machine is prone to rust and fall off in humid environments, has a high failure rate, is difficult to repair, and is cumbersome to adjust the limit end point position.
Design a multi-point induction door machine walking limit device, adopting four sets of induction components and detection components, and through the induction bracket and induction block, the number of rotations of the induction cable reel is accurately controlled, combined with the proximity switch, to simplify the movement distance of the door machine Maintenance process.
It improves induction accuracy, reduces the frequency of failures, simplifies the maintenance process, improves the stability and safety of the door machine, and avoids machine damage accidents.
Smart Images
Figure CN222433819U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of door crane travel limit, and in particular relates to a multi-point induction door crane travel limit limit device. Background Art
[0002] When the gantry crane is moving, the high-voltage cable is located in the cable reel. As the gantry crane moves, the cable is retracted and wound. To protect the cable from being broken, the gantry crane is equipped with a cable reel end limit for protection. At present, most of the terminal limit of the cable drum of the gantry crane is a mechanical chain transmission driven cam trigger limit. This limit is a mechanical limit, which is easily affected by the humid environment at the seaside. The chain is prone to rust and wear, which leads to breakage and limit failure, and cannot play the role of cable protection. The gantry crane cable drum is equipped with a mechanical transmission terminal limit device. This limit is composed of a limit sprocket, a connecting shaft, a chain, a limit switch, etc., which has the following three defects: First, the connecting shaft connected by the limit sprocket is unevenly stressed, and the traditional chain is prone to deviation or jamming, causing the connecting shaft to wear or even break; second, the chain connecting the limit sprocket is prone to rust and fall off in the humid environment of the port, and the chain is prone to fall off due to vibration during walking; third, the space where the chain is located is small, especially the limit sprocket is difficult to inspect, which brings difficulty to maintenance and replacement; fourth, when adjusting the limit terminal position, the drum cable needs to be dragged from the reel to the ground, which is cumbersome. Utility Model Content
[0003] The utility model aims to provide a multi-point induction door machine travel limit limit device to solve the technical problems of high failure rate and great maintenance difficulty of the traditional chain mechanical transmission limit device.
[0004] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a multi-point sensing door machine travel limit limiting device, including a cable reel and a sensing component and a detection component arranged on one side of the cable reel, the sensing component is provided with four groups, the detection component senses the number of rotations of the cable reel through the sensing component, thereby limiting the door machine, four groups of sensing components are distributed in an array on one side of the cable reel with the center of the cable reel as the axis point, the sensing component includes a sensing bracket, four sensing brackets are fixedly connected to one side of the cable reel, a sensing block is fixedly connected to the sensing bracket, and the detection component detects the sensing block.
[0005] Preferably, the sensing bracket is an L-shaped rod consisting of a long plate and a short plate, and the sensing block is mounted on the short plate on the sensing bracket.
[0006] Preferably, the induction bracket is fixed to one side of the cable reel by welding.
[0007] Preferably, the detection assembly comprises a proximity switch bracket, and a proximity switch is fixedly connected to the switch bracket.
[0008] Preferably, the bracket is composed of a long plate and a disc, and the proximity switch is fixedly connected to the disc.
[0009] Preferably, the proximity switch bracket is fixed to the door machine via a connecting rod.
[0010] Preferably, a cable is wound on the cable reel.
[0011] Preferably, the detection component is also equipped with an operation panel for displaying the working process.
[0012] The utility model of a multi-point induction door machine travel limit limit device has the following advantages:
[0013] The multi-point sensing gantry crane travel limit limit device abandons the traditional single-point sensing and designs four sensing points through the setting of the sensing bracket, the sensing block, the proximity switch bracket and the proximity switch. Four pulses are obtained by one turn of the cable, thereby improving the sensing accuracy. The sensing block is sensed and detected by the proximity switch to accurately control the movement distance of the gantry crane. During maintenance, only the proximity switch and the sensing block need to be replaced and installed, thus changing the dilemma of the narrow working surface of the original mechanical transmission limit limit, facilitating maintenance personnel to overhaul, and effectively improving the walking stability and safety of the gantry crane during production operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the sensing component of the utility model;
[0017] Figure 3 This is a schematic diagram of the detection component structure of the utility model;
[0018] Figure 4 It is a side view structural schematic diagram of the utility model;
[0019] Figure 5 This is a front view structural schematic diagram of the utility model;
[0020] Figure 6 The utility model is a schematic diagram of the operation panel of the door operator's operating room.
[0021] Explanation of markings in the figure: 1. Cable reel; 2. Sensing component; 21. Sensing bracket; 22. Sensing block; 3. Detection component; 31. Proximity switch bracket; 32. Proximity switch; 4. Cable; 5. Touch screen; 6. Left row end indicator light; 7. Simulation operation button; 8. Travel detection pulse light; 9. Right row end indicator light; A1. Left row cable pulse indicator light; A2. Right row cable pulse indicator light. DETAILED DESCRIPTION
[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0023] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0025] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0027] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a multi-point induction door machine travel limit limiting device of the utility model in conjunction with the accompanying drawings.
[0028] like Figure 1-Figure 2 As shown, a multi-point sensing door machine travel limit limiting device of the utility model comprises a cable reel 1 and a sensing component 2 and a detection component 3 arranged on one side of the cable reel 1, wherein the sensing component 2 is provided with four groups, and the detection component 3 senses the number of rotations of the cable reel 1 through the sensing component 2, thereby limiting the door machine, and four groups of sensing components 2 are distributed in an array on one side of the cable reel 1 with the center of the cable reel 1 as the axis point, and the sensing component 2 comprises a sensing bracket 21, and four sensing brackets 21 are fixedly connected to one side of the cable reel 1, and a sensing block 22 is fixedly connected to the sensing bracket 21.
[0029] In this embodiment, when the door machine moves, the cable reel 1 rotates with the movement of the door machine to reel in and release the cable 4. When the cable reel 1 rotates, it drives the four sensing brackets 21 to rotate with the center of the cable reel 1 as the axis. When the cable reel 1 rotates one circle, the detection component 3 detects 4 pulses through the sensing block 22. The cable 4 has a total of 2 circles of the right-line cable pulse indicator light A, which is 44 pulses. Generally, 3 circles of the cable 4 are reserved, and only 32 pulses can be detected.
[0030] like Figure 2 As shown, the sensing bracket 21 is an L-shaped rod composed of a long plate and a short plate. The sensing bracket 21 is fixed to one side of the cable reel 1 by welding. The sensing block 22 is installed on the short plate on the sensing bracket 21. The sensing block 22 is used for sensing detection of the proximity detection component 3. There are four sensing blocks 22. The cable reel 1 drives the cable 4 and the sensing block 22 to rotate one circle to obtain 4 pulses, thereby improving the sensing accuracy.
[0031] like Figure 3As shown, the detection component 3 includes a proximity switch bracket 31, which is composed of a long plate and a disc, and a proximity switch 32 is fixedly connected to the disc. The proximity switch bracket 31 is fixed to the door machine through a connecting rod. The proximity switch bracket 31 moves with the door machine. The proximity switch 32 is used to sense the sensing block 22. The number of times the sensing block 22 is sensed is the number of pulses. The proximity switch 32 uses a long-distance sensing limit with a sensing distance of 3 cm to improve the sensing accuracy.
[0032] like Figure 4-Figure 5 As shown, a cable 4 is wound on the cable reel 1, and the cable 4 is retracted and wound by relying on the cable reel 1 as the door operator moves.
[0033] like Figure 6 As shown, a touch display screen 5 is provided on the operation panel in the door machine operation room, and a left-line terminal indicator light 6, an analog operation button 7, a travel detection pulse light 8, a right-line terminal indicator light 9, a left-line cable pulse indicator light A1 and a right-line cable pulse indicator light A2 are also provided on the operation panel.
[0034] In summary, take the case where the door machine is in the reversing position and the cable reel is full as an example: when the door machine moves to the left, the travel detection pulse light 8 starts to flash, the left cable pulse indicator light A1 lights up, and the touch screen 5 displays the number of pulses detected by the detection component 3. When the cable reel 1 rotates to the 8th circle, that is, when 32 pulses are detected, it reaches the pre-set limit point, the left end indicator light 6 lights up, and the door machine stops moving. At this time, the door machine can only move to the right;
[0035] When the door machine moves to the right, the travel detection pulse light 8 starts to flash, the right cable pulse indicator light A2 lights up, the touch display screen 5 displays the number of pulses detected by the detection component 3, and the left cable pulse number starts to decrease. When the cable reel 1 rotates to the 8th circle, the proximity switch 32 detects the sensing block 2232 times, that is, the number of pulses is 32 times, and the door machine returns to the reversing position. The number of left and right pulses is zero. At this time, the driver can check through the touch display screen 5. If the number of pulses is not zero, maintenance is required. When the right pulse number is zero, the door machine stops moving right. The driver needs to re-issue the right command before moving right. The purpose is to avoid excessive tension on the cable 4 when the cable 4 is reversed. The gantry crane continues to move right, the travel detection pulse light 8 starts to flash, the right cable pulse indicator light A2 lights up, and the touch display screen 5 displays the number of pulses detected by the detection component 3. When the cable reel 1 rotates to the 8th circle, the proximity switch 32 detects the sensing block 2232 times, that is, the number of pulses is 32 times, and the prefabricated limit point is reached. The right end indicator light 9 lights up, and the gantry crane stops the right movement. The gantry crane drives the cable reel 1 to rotate when it moves. To prevent the cable 4 from breaking, under normal circumstances, when there are 3 turns of cable 4 left on the cable reel 1, the limit protection switch is triggered, the PLC receives the signal, issues a command, and the gantry crane stops running. The limit end position is simple to adjust and can be directly prefabricated on the touch screen. Through multi-point sensing, the sensing accuracy during the gantry crane's travel is improved, the frequency of failures is reduced, and machine damage accidents are effectively avoided. The limit of the inductive proximity switch changes the dilemma of the narrow working surface of the original mechanical transmission limit, which is helpful for maintenance personnel to overhaul and effectively improves the stability and safety of the gantry crane during production operations.
[0036] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.
Claims
1. A multi-point induction door crane travel limit stop device, comprising a cable reel (1) and a sensing component (2) and a detection component (3) arranged on one side of the cable reel (1), characterized in that: Four groups of sensing components (2) are provided. The detection component (3) senses the number of rotations of the cable reel (1) through the sensing components (2), thereby limiting the position of the door machine. The four groups of sensing components (2) are arranged in an array on one side of the cable reel (1) with the center of the cable reel (1) as an axis point. The sensing components (2) include sensing brackets (21). The four sensing brackets (21) are fixedly connected to one side of the cable reel (1). The sensing brackets (21) are fixedly connected to a sensing block (22). The detection component (3) detects the sensing block (22).
2. A multi-point induction door crane travel limit limiting device according to claim 1, characterized in that: The sensing bracket (21) is an L-shaped rod consisting of a long plate and a short plate, and the sensing block (22) is mounted on the short plate on the sensing bracket (21).
3. A multi-point induction door crane travel limit limiting device according to claim 2, characterized in that: The induction bracket (21) is fixed to one side of the cable reel (1) by welding.
4. The multi-point induction door crane travel limit limiting device according to claim 1, characterized in that: The detection assembly (3) comprises a proximity switch bracket (31), and a proximity switch (32) is fixedly connected to the switch bracket (31).
5. The multi-point induction door crane travel limit limiting device according to claim 4 is characterized in that: The support (31) is composed of a long plate and a disc, and the proximity switch (32) is fixedly connected to the disc.
6. A multi-point induction door crane travel limit stop device according to claim 5, characterized in that: The proximity switch bracket (31) is fixed on the door machine via a connecting rod.
7. The multi-point induction door crane travel limit limiting device according to claim 1, characterized in that: A cable (4) is wound on the cable reel (1).
8. The multi-point induction door crane travel limit limiting device according to claim 1, characterized in that: The detection component (3) is also equipped with an operation panel for displaying the working process.