Hoisting structure tension control device

Abstract

The utility model discloses a hoist structure tension control device relates to hoisting equipment technical field, wherein, the hoist structure tension control device is applied to the chassis of automatic equipment, and is connected with the steel wire rope, and the hoist structure tension control device includes movable rod, two inductors, induction subassembly and brake subassembly, and the movable rod is worn in the chassis, and is connected with the steel wire rope, control subassembly includes two inductors, and two inductors are spaced apart and located in the chassis, induction subassembly includes induction seat, and induction seat is covered in movable rod, and is located between two inductors, wherein, two inductors are configured to detect the actual position of induction seat, and brake subassembly is connected with movable rod.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, and in particular to a hoisting structure tension control device. Background Technology

[0002] In existing hoisting equipment, the monitoring and control of wire rope tension is a key aspect of ensuring the safe operation of the equipment.

[0003] When monitoring wire rope tension, hoisting equipment is susceptible to environmental interference or its own malfunctions, leading to inaccurate monitoring data or failure to promptly report abnormalities. Once the wire rope tension exceeds the safe range, it may not only damage the hoisted items but also cause serious consequences such as equipment overturning and personal injury. Utility Model Content

[0004] The main purpose of this invention is to propose a tension control device for hoisting structures, which aims to solve the technical problem of insufficient reliability in wire rope tension monitoring in hoisting equipment in related technologies.

[0005] To achieve the above objectives, the present invention proposes a hoisting structure tension control device, which is applied to the base frame of automated equipment and connected to a wire rope. The hoisting structure tension control device includes:

[0006] A movable rod, which passes through the base frame and is connected to the wire rope;

[0007] Two sensors are spaced apart on the base frame;

[0008] A sensing assembly includes a sensing base sleeved on the movable rod and located between two sensors; wherein the two sensors are configured to detect the actual position of the sensing base.

[0009] A braking assembly, which is connected to a movable rod.

[0010] In one embodiment, the sensing component further includes an elastic element sleeved on the movable rod, the elastic element being located between the sensing base and the movable rod.

[0011] In one embodiment, the elastic element includes a first elastic element and a second elastic element, the first elastic element abuts against the second elastic element, the first elastic element and the second elastic element are respectively sleeved on the movable rod, and the first elastic element is connected to the sensing base.

[0012] In one embodiment, a fixing nut and a pin are provided on one side of the induction seat. The fixing nut is sleeved on the movable rod, and the pin passes through the fixing nut and the movable rod in sequence for fixation.

[0013] In one embodiment, the control assembly further includes a braking assembly connected to the movable rod, and the sensing assembly further includes a first elastic element. The braking assembly is configured to trigger braking when the first elastic element applies a force to the movable rod in a direction opposite to the two sensors.

[0014] In one embodiment, the braking assembly includes a first link, a second link, and a safety clamp. The first link is disposed on the base frame and is throttle-connected to the second link. The second link is throttle-connected to the safety clamp. The first link is throttle-connected to the movable rod.

[0015] In one embodiment, the end of the first connecting rod away from the second connecting rod is provided with a waist-shaped groove, and the movable rod is provided with a movable shaft, the movable shaft being movably limited within the waist-shaped groove.

[0016] In one embodiment, the two sensors are spaced apart along the direction of movement of the movable rod.

[0017] In one embodiment, the hoisting structure tension control device further includes a controller, which is communicatively connected to the two sensors.

[0018] In one embodiment, the tension detection values ​​of the two sensors are different.

[0019] The technical solution of this utility model achieves control of the wire rope tension by installing a hoisting structure tension control device on the base frame of the stacker crane and connecting it to the stacker crane's wire rope. In practice, the movable rod moves with the wire rope, which in turn moves the sensing component. Under normal circumstances, the sensing base of the sensing component is located between the two sensors; under abnormal circumstances, the sensing base triggers one of the sensors, thus detecting changes in wire rope tension. This allows the hoisting structure tension control device to promptly detect abnormal changes in wire rope tension, providing a reliable basis for subsequent emergency braking and other safety measures, reducing the risk of safety accidents caused by abnormal wire rope tension. Furthermore, the use of two sensors effectively avoids the malfunction or misjudgment problems that may occur with a single sensor, improving the accuracy and reliability of tension monitoring. The braking component also effectively achieves braking, providing dual protection during the hoisting process and improving the safety and reliability of the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an embodiment of the hoisting structure tension control device provided by this utility model;

[0022] Figure 2 A schematic diagram of the cross-sectional structure of the hoisting structure tension control device provided by this utility model;

[0023] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 4 A schematic diagram of another embodiment of the hoisting structure tension control device provided by this utility model;

[0025] Figure 5 for Figure 4 A magnified view of a section at point B.

[0026] Explanation of icon numbers:

[0027] 1000. Lifting Structure Tension Control Device; 1. Movable Rod; 11. Movable Shaft; 2. Sensor; 2a. First Sensor; 2b. Second Sensor; 3. Sensing Assembly; 31. Sensing Base; 311. Fixing Nut; 312. Pin; 32. Elastic Component; 321. First Elastic Component; 322. Second Elastic Component; 4. Braking Assembly; 41. First Linkage Rod; 41a. Waist-shaped Groove; 42. Second Linkage Rod; 43. Safety Gear; 5. Base Frame.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] 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 scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model proposes a tension control device 1000 for hoisting structures.

[0033] Please see Figure 1 In one embodiment of this utility model, the hoisting structure tension control device 1000 is applied to the base frame 5 of an automated equipment and connected to a wire rope. The hoisting structure tension control device 1000 includes a movable rod 1, two sensors 2, a sensing component 3, and a braking component 4. The movable rod 1 passes through the base frame 5 and is connected to the wire rope. The two sensors 2 are spaced apart on the base frame 5. The sensing component 3 includes a sensing seat 31, which is sleeved on the movable rod 1 and located between the two sensors. The two sensors are configured to detect the actual position of the sensing seat 31. The braking component 4 is connected to the movable rod 1.

[0034] In this embodiment, it should be noted that wire ropes are widely used in the lifting devices of automated equipment in automated warehousing, including but not limited to stacker cranes, cranes, and elevators. However, under prolonged high-frequency lifting, wire rope fatigue fracture and overloading of lifted goods are prone to occur. The following explanation uses the lifting device of a stacker crane as an example. The lifting structure tension control device 1000 is installed on the base frame 5 of the stacker crane by means of bolt connection, snap-fit, etc., and is connected to the wire rope of the stacker crane lifting device. It can be understood that during the lifting process, the movable rod 1 serves to connect the wire rope and the control component, transmitting the tension and position changes of the wire rope to the control component and the sensing component 3. The base frame 5 has two spaced protrusions, and the movable rod 1 passes through the two protrusions respectively. The part of the movable rod 1 between the two protrusions of the base frame 5 is used to set the sensing seat 31. The sensing seat 31 is used to cooperate with the sensor of the control component to determine whether the tension of the wire rope is within the normal range, effectively avoiding the risk of safety accidents. It should be noted that the tension sensing values ​​of the two sensors are different, as detailed in the following embodiment. The connection between the braking assembly 4 and the movable rod 1 includes, but is not limited to, gear transmission, linkage transmission, etc. The braking assembly is used to achieve braking when the sensing seat 31 exceeds the detection range of the two sensors 2. Figure 1 It is understood that the braking assembly 4 can take various forms, including but not limited to linkage mechanism braking, spring energy storage braking, electromagnetic brakes, and hydraulic brakes. In one embodiment, the braking assembly 4 includes a spring energy storage device and a braking device. The spring energy storage device is in a compressed state during normal operation; when braking is required, the spring releases energy to drive the braking device. In another embodiment, the braking assembly 4 includes a hydraulic cylinder and a braking device. The hydraulic cylinder controls the action of the braking device through the pressure of hydraulic oil. When the tension of the wire rope changes abnormally, causing the movable rod 1 to move in the opposite direction under the action of the first elastic element 321, the braking assembly 4 can respond promptly and take braking measures. This design can quickly cut off the power source and trigger the safety clamp 43 in the event of sudden events such as wire rope breakage or jamming, achieving anti-fall braking and ensuring the safety of the hoisting process. Through the cooperation of the mechanical braking assembly 4 and the elastic element, dual protection for the hoisting process is achieved, improving the safety and reliability of the equipment.

[0035] The technical solution of this utility model achieves control of the tension of the wire rope by installing the hoisting structure tension control device 1000 on the base frame 5 of the stacker crane and connecting it to the wire rope of the stacker crane. In actual operation, the movable rod 1 moves with the wire rope, thereby driving the sensing component 3 to move with the movable rod 1. Under normal circumstances, the sensing seat 31 of the sensing component 3 is located between the two sensors; under abnormal circumstances, the sensing seat 31 will trigger one of the sensors, thereby detecting the change in wire rope tension. This allows the hoisting structure tension control device 1000 to promptly detect abnormal changes in wire rope tension, providing a reliable basis for subsequent emergency braking and other safety measures, and reducing the risk of safety accidents caused by abnormal wire rope tension. Furthermore, the use of two sensors effectively avoids the malfunction or misjudgment problems that may occur with a single sensor, improving the accuracy and reliability of tension monitoring. The braking component 4 also effectively achieves braking, providing dual protection for the hoisting process and improving the safety and reliability of the equipment.

[0036] In one embodiment of the present invention, the sensing component 3 further includes an elastic element, which is sleeved on the movable rod 1 and located between the sensing base 31 and the movable rod 1.

[0037] In this embodiment, combined with Figure 2 The elastic element provides elastic support for the movable rod 1. When the tension of the wire rope changes, the elastic element can buffer the displacement of the movable rod 1, playing a certain role in shock absorption and stability. Simultaneously, the presence of the elastic element allows the sensing seat 31 to move flexibly within a certain range, ensuring that the sensing seat 31 can accurately cooperate with the sensor to achieve sensitive detection of changes in wire rope tension. The types of elastic elements include, but are not limited to, helical springs and coil springs.

[0038] In one embodiment of the present invention, the elastic element includes a first elastic element 321 and a second elastic element 322. The first elastic element 321 abuts against the second elastic element 322. The first elastic element 321 and the second elastic element 322 are respectively sleeved on the movable rod 1. The first elastic element 321 is connected to the sensing base 31.

[0039] In this embodiment, combined with Figure 2 The structure of the elastic element is further refined to better adapt to different tension variations. The first elastic element 321 is a ring spring, and the sensing seat 31 is sleeved on the movable rod 1. The second elastic element 322 is a butterfly spring, and the second elastic element 322 abuts against the first elastic element 321.

[0040] In one embodiment of the present invention, a fixing nut 311 and a pin 312 are provided on one side of the sensing base 31. The fixing nut 311 is sleeved on the movable rod 1, and the pin 312 passes through the fixing nut 311 and the movable rod 1 in sequence for fixation.

[0041] In this embodiment, combined with Figure 5 The sensor base 31 has a fixing nut 311 and a pin 312 on one side. The fixing nut 311 is fitted onto the movable rod 1, and the pin 312 passes through the fixing nut 311 and the movable rod 1 in sequence for fixation. This ensures the stability of the sensor base 31 on the movable rod 1 and prevents it from shifting due to vibration or other external forces during hoisting. The cooperation of the fixing nut 311 and the pin 312 securely fixes the sensor base 31 to the movable rod 1, while also allowing for easy adjustment of the sensor base 31's position to adapt to different installation requirements and detection accuracy needs. This structural design ensures the stability of the sensor base 31 while improving the maintainability and adjustability of the equipment.

[0042] In one embodiment of the present invention, the braking assembly 4 includes a first connecting rod 41, a second connecting rod 42, and a safety clamp 43. The first connecting rod 41 is disposed on the base frame 5 and is pulsatorically connected to the second connecting rod 42. The second connecting rod 42 is pulsatorically connected to the safety clamp 43. The first connecting rod 41 is pulsatorically connected to the movable rod 1.

[0043] In this embodiment, combined with Figure 3 The middle part of the first connecting rod 41 is mounted on the base frame 5 via bolts, snap-fit ​​connections, or other means. The first connecting rod 41 can be connected to the movable rod 1 via hinges, gear transmission, or other means. The type of safety clamp 43 includes, but is not limited to, electromagnetic safety clamp 43 and spring-type safety clamp 43; here, a spring-type safety clamp 43 is used. The first connecting rod 41 is connected to the second connecting rod 42 via pin connections, spherical bearing connections, or other means, which are not limited here. The above arrangement realizes the power transmission from the movable rod 1 to the safety clamp 43. When the movable rod 1 moves under the action of the elastic element, the safety clamp 43 can be driven to move through the transmission of the first connecting rod 41 and the second connecting rod 42. Specifically, the first connecting rod 41 is connected to the movable rod 1, which can convert the displacement of the movable rod 1 into mechanical motion, and then transmit it to the safety clamp 43 through the second connecting rod 42, enabling the safety clamp 43 to quickly engage the brake and achieve anti-fall braking. This mechanical transmission structure is simple and reliable, and can still work effectively in emergency situations such as power outages, ensuring the safety of the hoisting process.

[0044] In one embodiment of the present invention, the end of the first connecting rod 41 away from the second connecting rod 42 is provided with a waist-shaped groove 41a, and the movable rod 1 is provided with a movable shaft 11, which is movably limited within the waist-shaped groove 41a.

[0045] In this embodiment, combined with Figure 3The movable shaft 11 can move freely within the oblong groove 41a, allowing the movable rod 1 to be adjusted within a certain range. This structural design, on the one hand, can accommodate the slight displacement of the movable rod 1 caused by changes in wire rope tension, ensuring the flexibility of transmission; on the other hand, the limiting effect of the oblong groove 41a can also prevent the movable shaft 11 from moving excessively, ensuring the stability of transmission. Through this ingenious structural design, reliable transmission between the movable rod 1 and the braking assembly 4 is achieved, improving the stability and reliability of the equipment.

[0046] In one embodiment of this utility model, two sensors are spaced apart along the moving direction of the movable rod 1.

[0047] In this embodiment, combined with Figure 1 Two sensors are spaced apart along the moving direction of the movable rod 1. This arrangement allows the two sensors to detect tension changes in the movable rod 1 at different positions. By spaced the sensors along the moving direction of the movable rod 1, the tension changes of the wire rope can be monitored more comprehensively. When the tension of the wire rope changes, the two sensors can detect the tension changes at different positions, thus more accurately determining the stress state of the wire rope. This spaced sensor arrangement provides richer monitoring data, providing strong support for precise control of the hoisting process. It can be understood that the two sensors are the first sensor 2a and the second sensor 2b. The first sensor 2a, located above the first sensor, is used to detect wire rope overload and jamming during lifting and lowering. The second sensor 2b, located below the second sensor, is used to detect wire rope breakage and instantaneous release during jamming.

[0048] In one embodiment of this utility model, the hoisting structure tension control device 1000 further includes a controller, which is communicatively connected to two sensors.

[0049] In this embodiment, combined with Figure 1 The hoisting structure tension control device 1000 also includes a controller (not shown in the figure), which is communicatively connected to two sensors. It is understood that the controller is communicatively connected to the second sensor 2b located at the lowest position of the two sensors. The type of controller includes, but is not limited to, a control system or an industrial controller. The controller is mounted on the base frame 5. By communicating with the two sensors, the entire device can be shut down promptly in an emergency based on the sensor detection data.

[0050] In one embodiment of this utility model, the tension detection values ​​of the two sensors are different.

[0051] In this embodiment, combined with Figure 1The two sensors detect different tension values. This design is based on different detection needs and application scenarios. Because the two sensors are spaced apart along the moving direction of the movable rod 1, their positions are different, and therefore the detected tension values ​​will also differ. This difference can provide richer monitoring information, helping to more accurately determine the stress state of the wire rope. When the tension of the wire rope changes, the two sensors can detect the tension change at different locations. It should be noted that under normal circumstances, when lifting goods, the movable rod 1 is pulled upward as the tension of the wire rope changes. At this time, the first elastic element 321 is compressed to its limit, and the second elastic element 322 also begins to compress. Simultaneously, the upward movement of the movable rod 1 drives the braking component 4 of the control assembly, thereby releasing the braking component 4. At this time, the sensor seat 31 on the movable rod 1 is located between the two sensors.

[0052] When lifting overloaded cargo, the wire rope is stretched, which in turn pulls the boom upward, causing the first elastic element 321 to be compressed to its limit, and the second elastic element 322 also begins to compress. At this time, because the cargo is overloaded and cannot be lifted, the wire rope is continuously wound up, causing the tension of the wire rope to continuously increase, and the second elastic element 322 is further compressed. When the tension of the wire rope reaches 1 / 2 times the full load weight, the sensor seat 31 on the movable rod 1 will trigger the first sensor 2a on the uppermost side of the movable rod 1. After the first sensor 2a is triggered, it will immediately cut off the power source and issue an alarm.

[0053] When the wire rope suddenly breaks during the lifting process, its tension disappears instantly, and the movable rod 1 falls rapidly under the elastic force of the first elastic element 321 and the second elastic element 322. When the tension of the wire rope drops to 1 / 2 times the unloaded weight, the second sensor 2b at the bottom of the movable rod 1 will be immediately triggered, which in turn will activate the braking assembly 4. The braking assembly 4 will then implement anti-fall braking and quickly send a signal to the controller. The controller will disconnect the power source and issue an alarm.

[0054] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A tension control device for a hoisting structure, applied to the base frame of automated equipment and connected to a wire rope, characterized in that, The tension control device for the hoisting structure includes: A movable rod, which passes through the base frame and is connected to the wire rope; Two sensors are spaced apart on the base frame; A sensing assembly, comprising a sensing base sleeved on the movable rod and located between two sensors configured to detect the actual position of the sensing base; A braking assembly, which is connected to the movable rod.

2. The hoisting structure tension control device as described in claim 1, characterized in that, The sensing component also includes an elastic element, which is sleeved on the movable rod and located between the sensing base and the movable rod.

3. The hoisting structure tension control device as described in claim 2, characterized in that, The elastic element includes a first elastic element and a second elastic element. The first elastic element abuts against the second elastic element. The first elastic element and the second elastic element are respectively sleeved on the movable rod. The first elastic element is connected to the sensing base.

4. The hoisting structure tension control device as described in claim 3, characterized in that, A fixing nut and a pin are provided on one side of the induction seat. The fixing nut is sleeved on the movable rod, and the pin passes through the fixing nut in sequence to fix it to the movable rod.

5. The hoisting structure tension control device as described in any one of claims 1 to 4, characterized in that, The braking assembly includes a first link, a second link, and a safety clamp. The first link is rotatably mounted on the base frame and is throttle-connected to the second link. The second link is throttle-connected to the safety clamp, and the first link is throttle-connected to the movable rod.

6. The hoisting structure tension control device as described in claim 5, characterized in that, The end of the first connecting rod away from the second connecting rod has a waist-shaped groove, and the movable rod has a movable shaft, which is movably limited within the waist-shaped groove.

7. The hoisting structure tension control device as described in any one of claims 1 to 4, characterized in that, The two sensors are spaced apart along the moving direction of the movable rod.

8. The hoisting structure tension control device as described in claim 7, characterized in that, The hoisting structure tension control device also includes a controller, which is communicatively connected to the two sensors.

9. The hoisting structure tension control device as described in claim 7, characterized in that, The tension detection values ​​of the two sensors are different.

Images