A cage upline detection device

Abstract

The present application relates to the technical field of elevator safety, and specifically relates to a cage upward detection device, which comprises a triggering mechanism and a detection mechanism, the detection mechanism is in transmission connection with the triggering mechanism, the triggering mechanism and the detection mechanism are respectively installed on the top of a cage body near both sides, a controller and a cage running motor are installed on the cage body, the controller and the cage running motor are in electrical connection, the controller and the triggering mechanism are in electrical connection, an alarm is installed on the cage body, and the alarm is in electrical connection with the controller. The present application effectively solves the problems of the absence of obstacle detection, unreliable detection, high cost and difficult maintenance of the existing cage upward detection, provides an economic and reliable technical solution for the safe operation of the cage, and has significant practical value and promotional significance.

Description

Technical Field

[0001] This invention relates to the field of elevator safety technology, specifically to a cage upward detection device. Background Technology

[0002] In construction, suspended cages are commonly used vertical transportation equipment, and the safety of their upward movement is directly related to the safety of personnel and property. As the suspended cage moves upward, its path often encounters various obstacles, such as protruding planks, reinforcing bars, and scaffold crossbars. Because existing suspended cages lack effective real-time obstacle detection mechanisms, they often cannot stop in time when encountering these obstacles, easily leading to damage to the cage or building structure, and even serious safety accidents such as injuries or fatalities.

[0003] In existing technologies, some hoisting cages only have limit switches on the side or bottom of the cage to detect whether the cage has exceeded its travel range or whether there are foreign objects at the bottom. However, they cannot effectively detect lateral obstacles extending in the upward path. Other detection solutions use infrared sensing or camera recognition, but these solutions are greatly affected by environmental factors such as dust, strong light, and vibration in the construction scene. Their detection accuracy is unstable, and the equipment is expensive and difficult to maintain, making it difficult to widely apply in complex construction environments.

[0004] Therefore, how to develop a cage upward movement detection device that is simple in structure, highly reliable, low in cost, and adaptable to harsh construction environments, in order to solve the problem of missing or unreliable detection of obstacles in the upward movement of cages in the existing technology, is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology in the absence or unreliability of obstacle detection during the upward movement of the hoist cage, and to achieve real-time and reliable detection of obstacles in the upward movement path of the hoist cage to ensure the safe operation of the hoist cage, while meeting the requirements of simple structure, high reliability, low cost and adaptability to harsh construction environments, this application provides a hoist cage upward movement detection device.

[0006] The upward detection device for a suspended cage provided in this application adopts the following technical solution:

[0007] A hoisting cage upward detection device includes a triggering mechanism and a detection mechanism. The detection mechanism is kinetically connected to the triggering mechanism. The triggering mechanism and the detection mechanism are respectively installed on the top of the hoisting cage body near both sides. A controller and a hoisting cage running motor are installed on the hoisting cage body. The controller and the hoisting cage running motor are electrically connected. The controller and the triggering mechanism are also electrically connected. An alarm is installed on the hoisting cage body. The alarm is electrically connected to the controller.

[0008] By adopting the above technical solution, the limitations of existing hoisting cages that rely solely on limit switches or complex photoelectric devices are overcome. By installing the detection mechanism and triggering mechanism together on both sides of the top of the hoisting cage, the critical lateral areas of the upward path can be directly covered, achieving seamless linkage between obstacle contact, signal transmission, and shutdown alarm. When an obstacle appears, the motor power is quickly cut off and the alarm is triggered without manual intervention, fundamentally solving the safety hazards of missing detection and delayed response during the upward movement of traditional hoisting cages, and providing proactive protection for personnel and equipment safety.

[0009] Furthermore, the triggering mechanism includes a first fixed frame, which is fixedly and vertically installed on the top surface of the cage body on the side away from the detection mechanism. A rotating plate is hinged to the top of the first fixed frame, and a limit switch is fixedly installed on the first fixed frame corresponding to the rotating plate. The limit switch is electrically connected to the controller. A reset member is provided between the rotating plate and the first fixed frame. The reset member drives the rotating plate to rotate until it abuts against the trigger end of the limit switch. The detection mechanism is connected to the rotating plate.

[0010] By adopting the above technical solution, a mechanical contact detection core was constructed. The first fixed frame provides stable support for the mechanism, the physical contact or disengagement between the rotating plate and the limit switch ensures accurate signal output, and the reset component enables automatic reset after triggering. Compared with infrared sensing or camera recognition, this structure does not require a complex signal processing module, is unaffected by dust, strong light, and vibration in construction scenarios, and can maintain stable detection even in harsh environments. At the same time, the limit switch is inexpensive and has a low failure rate, significantly reducing the manufacturing and maintenance costs of the device, making it suitable for scenarios with high cost-effectiveness requirements, such as construction.

[0011] Furthermore, the detection mechanism includes a second fixed frame, which is fixedly and vertically installed on the top surface of the cage body on the side away from the triggering mechanism. A first detection rope is fixedly connected to the top of the second fixed frame, and the end of the first detection rope away from the second fixed frame is connected to the rotating plate.

[0012] By adopting the above technical solution, a rope drive replaces the rigid triggering component. The second fixed frame works in conjunction with the first detection rope to form a transverse interception line at the top of the cage, which can flexibly capture obstacles in different positions. The rope drive is not only lightweight and easy to install, but it can also buffer the impact force of obstacles through its own deformation, avoiding damage to the mechanism caused by rigid collisions; at the same time, the first detection rope is directly connected to the rotating plate, and the force transmission is instantaneous, ensuring that the triggering mechanism can quickly respond to obstacle contact and improve the overall detection sensitivity.

[0013] Furthermore, the rotation center between the rotating plate and the first fixed frame is located on the rotating plate at a position slightly lower than the limit switch, and the connection point between the first detection rope and the rotating plate is located on the rotating plate at a position slightly higher than the limit switch.

[0014] By adopting the above technical solution, the lever principle is used to achieve the dual effects of force amplification and labor-saving reset. By placing the rotation center closer to the limit switch and the detection rope connection point further away from the limit switch, the small pushing force applied by the obstacle can be converted into a sufficiently large torque, easily driving the rotating plate to disengage from the limit switch, thus solving the problem of small obstacles failing to trigger detection.

[0015] Furthermore, a protective plate is fixedly connected to the first fixing frame, and the protective plate covers the upper part of the limit switch.

[0016] By adopting the above technical solution, a dedicated protective barrier is constructed for the limit switch. The protective plate covers the upper part of the limit switch, effectively preventing the intrusion of debris such as wood chips and cement particles during construction. This avoids the limit switch from jamming at the trigger terminal due to dust accumulation and damage to the casing due to impacts from debris, ensuring that the limit switch is always in a stable working state and further improving the reliability and durability of the triggering mechanism.

[0017] Furthermore, a tension adjustment component is provided at the end of the first detection rope away from the first fixing frame. The tension adjustment component includes an external threaded sleeve and an internal threaded sleeve. The external threaded sleeve is fixedly installed on the second fixing frame, and the internal threaded sleeve is threadedly connected to the external threaded sleeve. A through hole is provided on the second fixing frame, penetrating the external threaded sleeve and the internal threaded sleeve. A conical surface is provided at the outer end of the external threaded sleeve, and a plurality of annularly distributed extrusion grooves are provided on the conical surface. A conical hole is provided at the inner end of the internal threaded sleeve corresponding to the conical surface.

[0018] By adopting the above technical solution, precise adjustment and reliable locking of the tension of the first detection rope are achieved. The threaded engagement of the external and internal threaded sleeves allows for fine-tuning of the rope tension to adapt to different scenario requirements. For example, loosening it can accommodate lightweight obstacles, while tightening it can prevent accidental triggering by wind. The extrusion structure of the conical surface and conical hole, combined with the elastic contraction design of the extrusion groove, can clamp the rope in a wrap-around manner, preventing the rope from loosening due to cage vibration. Compared with traditional bolt clamping, this component is more convenient to adjust and more secure to lock, ensuring that the detection rope maintains the preset tension for a long time and avoiding missed detections due to rope slack.

[0019] Furthermore, both the triggering mechanism and the detection mechanism are configured as two sets, and the two sets of triggering mechanisms and detection mechanisms are respectively fixedly connected to the top of the cage body near both ends. The middle of the first detection rope in the two sets of detection mechanisms is fixedly connected to the second detection rope.

[0020] By adopting the above technical solution, the detection range is expanded from a localized area on one side to the entire width of the top. Two sets of mechanisms are symmetrically installed at both ends of the top of the cage, and the second detection rope is laterally connected to the two sets of first detection ropes to form an "H-shaped" closed-loop triggering network, which can cover the entire lateral area of ​​the cage's upward path and eliminate the detection blind spots that exist with a single set of mechanisms.

[0021] Furthermore, each of the first fixed frames is rotatably connected to a first inclined pressure rod, the middle of the first inclined pressure rod is laid on the second detection rope, a third detection rope is fixedly connected between the two first inclined pressure rods at the end away from the first fixed frame, a first tension spring is fixedly connected between the first inclined pressure rod and the first fixed frame, and the third detection rope is set at the same height as the second detection rope.

[0022] By adopting the above technical solution, a front-side three-dimensional detection dimension is added to the original lateral detection: the first inclined pressure bar is placed on the second detection rope, and the third detection rope is set parallel to the second detection rope, forming a double-layer triggering structure. When an obstacle extends obliquely from the front of the cage, such as a scaffold crossbar that extends forward, it will first contact the third detection rope, and the force will be transmitted to the second detection rope through the inclined pressure bar, thereby triggering the triggering mechanism. This solves the problem that lateral detection alone cannot detect obstacles on the front side. The first tension spring ensures that the inclined pressure bar and the third detection rope quickly reset after triggering, maintaining the stability of the mechanism.

[0023] Furthermore, each of the second fixed frames is rotatably connected to a second inclined pressure rod, the middle of which rests on the second detection rope. A fourth detection rope is fixedly connected between the two second inclined pressure rods at the end furthest from the second fixed frame. A second tension spring is fixedly connected between the second inclined pressure rod and the second fixed frame. The fourth detection rope is parallel to the second detection rope at the same height.

[0024] By adopting the above technical solution, the detection network has been further improved. The second inclined pressure rod, in conjunction with the fourth detection rope, forms a double-layer triggering structure symmetrical to the front side on the rear side of the cage, which, together with the third detection rope, covers the front and rear areas of the cage. Regardless of whether an obstacle extends from the front, rear, or middle, it can be detected by the corresponding detection rope, achieving all-round detection.

[0025] Furthermore, the first detection rope, the second detection rope, the third detection rope, and the fourth detection rope are all configured as steel wire ropes.

[0026] By adopting the above technical solutions, the physical properties of steel wire ropes are adapted to the needs of construction scenarios. The high strength and wear resistance of steel wire ropes allow them to withstand hard impacts from obstacles without easily breaking, solving the problems of wear and breakage common in non-metallic ropes. Low elongation ensures no delay in force transmission, avoiding detection lag caused by rope stretching. Its corrosion resistance withstands the erosion of cement dust and rainwater, eliminating the need for frequent replacements. Furthermore, the stable shape of the steel wire rope prevents sagging and deviation over long-term use, ensuring the detection rope always maintains the preset detection position and improving detection accuracy.

[0027] Beneficial effects achieved:

[0028] This application, through the synergistic combination of the above technical solutions, constructs a cage upward detection device that is simple in structure, reliable and durable, low in cost, and adaptable to harsh environments, achieving a multi-dimensional breakthrough compared to existing technologies:

[0029] 1. Comprehensive Detection: Upgraded from single horizontal detection to full-width top and front and rear three-dimensional detection, covering all key areas of the cage's upward path, completely eliminating blind spots, and can detect various obstacles such as planks, steel bars, and scaffold crossbars, solving the defect of "limited detection range" in existing technologies.

[0030] 2. Environmental adaptability: Based on mechanical contact combined with rope transmission, it has no complex photoelectric components and is not affected by dust, strong light, vibration, or rain. It can maintain stable detection even in harsh environments such as construction sites, and its reliability is far higher than that of infrared or camera solutions.

[0031] 3. Cost and maintenance advantages: The core components are low-cost components such as limit switches, wire ropes, and fixing frames. There are no precision sensors or image recognition modules, resulting in low manufacturing costs. The mechanical structure has a low failure rate. Later maintenance only requires checking the rope tension and the elasticity of the reset parts. The operation is simple and the cost is controllable, making it suitable for large-scale promotion.

[0032] 4. Safety Response Efficiency: The entire process of obstacle contact → force transmission → signal output → shutdown alarm is automated. The response time is short and the machine can be automatically controlled to stop without manual intervention, preventing the cage from continuing to rise and hitting the obstacle, thus minimizing the risk of personnel injury and equipment damage.

[0033] 5. Adaptability and flexibility: By adjusting the length of the detection rope, the tension adjustment component, and the angle of the inclined pressure bar, it can be adapted to cages of different widths and models without the need for redesign for specific cages. The adaptability range covers various vertical transportation scenarios such as construction, warehousing and logistics.

[0034] In summary, this application effectively solves the problems of lack of obstacle detection, unreliable detection, high cost, and difficult maintenance in existing hoist cages, providing an economical and reliable technical solution for the safe operation of hoist cages, and has significant practical value and promotion significance. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall installation structure of Embodiment 1 of this application.

[0036] Figure 2 This is a schematic diagram of the installation structure of the triggering mechanism and the detection mechanism in Embodiment 1 of this application.

[0037] Figure 3 This is a structural exploded view of the triggering mechanism in Embodiment 1 of this application.

[0038] Figure 4 This is a schematic diagram of the working principle of the triggering mechanism in Embodiment 1 of this application.

[0039] Figure 5 This is a schematic diagram of the installation structure of the tension adjustment component in Embodiment 2 of this application.

[0040] Figure 6 This is a cross-sectional structural diagram of the tension adjustment component in Embodiment 2 of this application.

[0041] Figure 7 This is a schematic diagram of the overall installation structure of Embodiment 3 of this application.

[0042] Figure 8 This is a schematic diagram of the overall installation structure of Embodiment 4 of this application.

[0043] Explanation of reference numerals in the attached drawings: 100, triggering mechanism; 101, first fixed frame; 102, rotating plate; 103, limit switch; 104, reset component; 105, hinged pivot; 106, protective plate; 200, detection mechanism; 201, second fixed frame; 202, first detection rope; 203, second detection rope; 204, first inclined pressure bar; 205, third detection rope; 206, first tension spring; 207, second inclined pressure bar; 208, fourth detection rope; 209, second tension spring; 300, cage body; 301, controller; 302, cage running motor; 303, alarm; 400, tension adjustment assembly; 401, external threaded sleeve; 402, internal threaded sleeve; 403, through hole; 404, conical surface; 405, extrusion groove; 406, conical hole. Detailed Implementation

[0044] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0045] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] This application discloses a cage upward movement detection device.

[0048] Example 1

[0049] Please refer to the above as well. Figures 1 to 4 In one embodiment of this invention, a cage upward detection device includes a triggering mechanism 100 and a detection mechanism 200. The detection mechanism 200 is connected to the triggering mechanism 100. The triggering mechanism 100 and the detection mechanism 200 are respectively installed on the top of the cage body 300 near both sides. A controller 301 and a cage running motor 302 are installed on the cage body 300. The controller 301 and the cage running motor 302 are electrically connected. The controller 301 and the triggering mechanism 100 are also electrically connected. An alarm 303 is installed on the cage body 300 and is electrically connected to the controller 301.

[0050] This application achieves real-time detection and safe response to obstacles on the upward path of the hoisting cage through the coordinated operation of the triggering mechanism 100 and the detection mechanism 200, combined with the logic control of the controller 301. The triggering mechanism 100 and the detection mechanism 200 are respectively installed on the top of the hoisting cage body 300 near both sides, which can cover the main lateral path in the upward direction of the hoisting cage, ensuring the detection of obstacles such as wooden planks, steel bars, and scaffold crossbars extending from the side or at an angle.

[0051] When the hoist cage 300 moves upward, if there is an obstacle in the path, the obstacle will first contact and push the detection mechanism 200 at the top. Since the detection mechanism 200 is connected to the triggering mechanism 100, the displacement or force of the detection mechanism will be directly transmitted to the triggering mechanism. After the triggering mechanism 100 senses the triggering action, it will transmit the electrical signal of the detected obstacle to the controller 301 on the hoist cage 300 in real time. After receiving the signal, the controller 301 immediately activates the preset safety logic. On the one hand, it sends a stop command to the hoist cage running motor 302, causing the hoist cage to stop moving upward quickly; on the other hand, it sends a signal to the alarm 303, triggering the alarm to remind the operators and surrounding construction personnel to pay attention to safety.

[0052] Please refer to the above as well. Figures 1 to 4 In one specific embodiment of this invention, the triggering mechanism 100 includes a first fixed frame 101, which is fixedly and vertically installed on the top surface of the cage body 300 away from the detection mechanism 200. A rotating plate 102 is hinged to the top of the first fixed frame 101. A limit switch 103 is fixedly installed on the first fixed frame 101 corresponding to the rotating plate 102. The limit switch 103 is electrically connected to the controller 301. A reset member 104 is provided between the rotating plate 102 and the first fixed frame 101. The reset member 104 drives the rotating plate 102 to rotate until it abuts against the trigger end of the limit switch 103. The detection mechanism 200 is connected to the rotating plate 102.

[0053] During operation, the triggering mechanism 100 uses the core logic of mechanical rotation triggering and reset rebound to capture obstacle signals through linkage with the detection mechanism 200. The first fixed frame 101 is vertically fixed on the top surface of the cage body 300 away from the detection mechanism 200, providing stable support for the entire mechanism; the rotating plate 102 is hinged to the top of the first fixed frame 101. Under the elastic drive of the reset member 104, the rotating plate 102 will maintain a rotational tendency towards the limit switch 103, and finally come into close contact with the trigger end of the limit switch 103. At this time, the limit switch 103 transmits a stable initial electrical signal to the controller 301, indicating that there is no obstacle.

[0054] When the hoisting cage encounters an obstacle during its upward movement, the obstacle will first push the detection mechanism 200, which will then drive the rotating plate 102 to rotate around the hinge point away from the limit switch 103. During this process, the rotating plate 102 loses contact with the trigger end of the limit switch 103, and the electrical signal output by the limit switch 103 changes from "on" to "off". The limit switch 103 transmits the change in electrical signal to the controller 301, which determines the presence of an obstacle and initiates a safety response. After the obstacle is removed, the external force on the detection mechanism 200 disappears, and the elastic force of the reset member 104 resumes control of the rotating plate 102, driving it to rotate around the hinge point until it comes into contact with the trigger end of the limit switch 103 again. The limit switch 103 returns to its initial trigger state, and the device returns to the standby state, waiting for the next obstacle trigger.

[0055] Please refer to the above as well. Figures 1 to 4 In one specific embodiment of this example, the reset member 104 is configured as a torsion spring. The rotating plate 102 and the first fixed frame 101 are rotatably connected by a hinge pivot 105. The torsion spring is mounted on the hinge pivot 105, with one end of the torsion spring fixedly inserted into the rotating plate 102 and the other end of the torsion spring fixedly inserted into the first fixed frame 101.

[0056] During operation, when a torsion spring is used as the reset element 104, the rotating plate 102 automatically resets through the torque generated by its elastic deformation. The torsion spring is mounted on the hinge pivot 105 between the rotating plate 102 and the first fixed frame 101, with one end fixed to the rotating plate 102 and the other end fixed to the first fixed frame 101. In the initial state, the torsion spring is in a pre-tightened state, and the generated torque drives the rotating plate 102 to rotate around the hinge pivot 105, keeping the rotating plate 102 in contact with the trigger end of the limit switch 103, providing a stable initial position for the triggering mechanism.

[0057] When the detection mechanism 200 is pushed by an obstacle and causes the rotating plate 102 to rotate, the rotating plate 102 rotates around the hinge pivot 105, forcing the torsion spring to further torsion and deform, converting mechanical energy into elastic potential energy for storage. At this time, the rotating plate 102 disengages from the limit switch 103, triggering a detection signal.

[0058] When the obstacle disappears, the external force of the detection mechanism 200 is released, the torsion spring releases the stored elastic potential energy, and generates a reverse torque to drive the rotating plate 102 to rotate around the hinge pivot 105 until the rotating plate 102 abuts against the trigger end of the limit switch 103 again, restoring the initial state and completing the automatic reset.

[0059] Please refer to the above as well. Figures 1 to 4In one specific embodiment of this example, the detection mechanism 200 includes a second fixed frame 201, which is fixedly and vertically installed on the top surface of the cage body 300 on the side away from the triggering mechanism 100. A first detection rope 202 is fixedly connected to the top of the second fixed frame 201, and one end of the first detection rope 202 away from the second fixed frame 201 is connected to the rotating plate 102.

[0060] During operation, the detection mechanism 200 uses rope transmission as its core to build a force transmission bridge between the obstacle and the triggering mechanism 100, and achieves triggering linkage through a simple physical connection.

[0061] The second fixing frame 201 is vertically fixed on the top surface of the cage body 300 away from the triggering mechanism 100, forming a two-sided opposing support with the first fixing frame 101 of the triggering mechanism 100; one end of the first detection rope 202 is fixed to the top of the second fixing frame 201, and the other end is directly connected to the rotating plate 102 of the triggering mechanism 100, forming a horizontal triggering link spanning the top surface of the cage. In the initial state, the rotating plate 102 abuts against the limit switch 103 under the action of the reset member 104, and the first detection rope 202 remains in a naturally taut state, without interfering with the initial triggering state of the triggering mechanism.

[0062] When the hoisting cage encounters a horizontally extending obstacle during its upward movement, the obstacle will first contact and impact the first detection rope 202 spanning above the hoisting cage. Since the two ends of the first detection rope 202 are fixed to the second fixed frame 201 and the rotating plate 102 respectively, the thrust of the obstacle will be transmitted along the first detection rope 202 to the rotating plate 102, forming a pulling force that pulls the rotating plate 102.

[0063] The tension transmitted by the first detection rope 202 overcomes the elasticity of the reset member 104, driving the rotating plate 102 to rotate around the hinge point away from the limit switch 103. This causes the rotating plate 102 to disengage from the trigger end of the limit switch 103, resulting in a sudden change in the electrical signal of the limit switch 103, which is then transmitted to the controller 301, ultimately triggering the cage to stop and triggering an alarm. When the obstacle is removed, the external force on the first detection rope 202 disappears, the reset member 104 drives the rotating plate 102 to rebound, and the first detection rope 202 synchronously returns to its natural tension state, and the device returns to the initial detection mode.

[0064] Please refer to the above as well. Figures 1 to 4 In one specific embodiment of this example, the rotation center between the rotating plate 102 and the first fixed frame 101 is located on the rotating plate 102 at a position slightly lower than the limit switch 103, and the connection point between the first detection rope 202 and the rotating plate 102 is located on the rotating plate 102 at a position slightly higher than the limit switch 103.

[0065] During operation, this design optimizes the lever arm structure of the rotating plate 102 and utilizes the lever principle to achieve efficient transmission of triggering force and precise control of reset force.

[0066] The rotation center of the rotating plate 102 and the first fixed frame 101 is limited to a position slightly lower on the side closer to the limit switch 103, while the connection point of the first detection rope 202 and the rotating plate 102 is located slightly higher on the side farther from the limit switch 103. This arrangement makes the rotating plate 102 a lever structure with a long trigger arm. With the rotation center as the fulcrum, the distance from the connection point of the first detection rope 202 to the fulcrum is the lever arm L1.

[0067] When the hoisting cage encounters an obstacle during its upward movement, the first detection rope 202 experiences a pushing force and transmits a pulling force F1 to the rotating plate 102. According to the lever principle, this pulling force generates a triggering torque M1 = F1 × L1 on the rotating plate 102. Since the triggering arm L1 is relatively long, even if the pushing force applied by the obstacle is small, a sufficiently large triggering torque M1 can be generated. This makes it easier to overcome the reset torque applied to the reset end by the reset member 104, thereby driving the rotating plate 102 to rotate rapidly around the fulcrum, disengaging from the limit switch 103, and achieving rapid triggering of the detection signal.

[0068] Please refer to the above as well. Figures 1 to 4 In one specific embodiment of this example, a protective plate 106 is fixedly connected to the first fixing frame 101, and the protective plate 106 covers the upper part of the limit switch 103.

[0069] During operation, the protective plate 106 creates a dedicated protective area for the limit switch 103. The protective plate 106 is fixedly connected to the first mounting bracket 101, forming a top protective barrier covering the trigger end, wiring terminals, and other critical components of the limit switch 103. This barrier physically isolates the limit switch 103 from construction dust, falling debris, and other external environmental factors at the top of the hoist cage, maintaining only the normal contact channel between the rotating plate 102 and the trigger end of the limit switch 103, without affecting the core transmission and triggering logic of the triggering mechanism.

[0070] During the upward operation of the hoist cage, small debris such as wood chips and cement particles from construction may fall from a height. These external interference factors are effectively intercepted by the protective plate 106 before they come into contact with the limit switch 103. After the falling debris hits the protective plate 106, it cannot directly contact the limit switch 103, preventing it from being damaged by external impact and ensuring that the limit switch 103 is always in a stable working environment.

[0071] Please refer to the above as well. Figures 1 to 4In one specific embodiment of this invention, the alarm 303 is disposed on the outer side of the cage, and the alarm 303 is electrically connected to the controller 301. The alarm 303 is preferably an industrial-grade integrated sound and light alarm device, such as the LTE-1101J high-decibel sound and light alarm horn or the YS-01A multi-functional linkage sound and light alarm.

[0072] The LTE-1101J high-decibel audible and visual alarm speaker has an alarm volume of 110-120dB and a coverage radius of ≥50 meters. It supports two alarm modes: continuous buzzing and intermittent buzzing. Intermittent buzzing can be preset and triggered by the controller 301, which avoids excessive interference to construction personnel due to continuous noise. At the same time, it ensures that personnel inside the cage, ground command, and surrounding workers within a 50-meter range can clearly identify the alarm signal.

[0073] The LTE-1101J high-decibel sound and light alarm speaker is also equipped with a high-brightness LED warning light. The light color is red, and the light flashes at a frequency of 1 to 2 times per second. The lampshade is made of PC material (impact-resistant and dustproof). The visibility distance is ≥30 meters in strong light and rainy weather, which makes up for the lack of sound that may be masked in noisy construction environments.

[0074] The LTE-1101J high-decibel sound and light alarm speaker has an IP65 protection rating, making it dustproof and waterproof. It can directly withstand dust accumulation and rain splashes during construction, preventing alarm function failure due to environmental factors.

[0075] The core feature of the YS-01A multi-functional linkage audible and visual alarm is that, in addition to the basic audible and visual alarm, it supports linkage with the operating status of the hoist cage. When the controller 301 triggers the stop command, the alarm not only emits audible and visual signals, but also simultaneously outputs a set of switch signals to the alarm indicator light of the remote control terminal, realizing a dual warning of local alarm of the hoist cage combined with remote reminder from the ground.

[0076] When the limit switch 103 is activated, the controller 301 receives the trigger signal from the limit switch 103 and immediately sends an activation command to the alarm 303. Upon receiving the command, the alarm 303 can issue a clear warning message to the hoist cage operator by means of audible alarm and / or flashing light, reminding them to take timely operational measures to avoid safety accidents such as overtravel collisions caused by the hoist cage continuing to ascend.

[0077] Example 2

[0078] Please refer to the above as well. Figure 5 and Figure 6Based on Embodiment 1, in one specific embodiment of this embodiment, a tension adjustment component 400 is provided at the end of the first detection rope 202 away from the rotating plate 102. The tension adjustment component 400 includes an external threaded sleeve 401 and an internal threaded sleeve 402. The external threaded sleeve 401 is fixedly installed on the second fixing frame 201, and the internal threaded sleeve 402 is threadedly connected to the external threaded sleeve 401. A through hole 403 is provided on the second fixing frame 201, penetrating the external threaded sleeve 401 and the internal threaded sleeve 402. A conical surface 404 is provided at the outer end of the external threaded sleeve 401, and a plurality of annularly distributed extrusion grooves 405 are provided on the conical surface 404. A conical hole 406 is provided at the inner end of the internal threaded sleeve 402 corresponding to the conical surface 404.

[0079] During operation, the tension adjustment component 400, based on a composite structure of threaded transmission and conical extrusion, achieves precise adjustment and reliable locking of the tension of the first detection rope 202. The external threaded sleeve 401 is fixed on the second fixed frame 201, and the internal threaded sleeve 402 is connected to the external threaded sleeve 401 via threads. The end of the first detection rope 202 away from the one connected to the rotating plate 102 passes sequentially through the through hole 403 of the second fixed frame 201, the inner hole of the external threaded sleeve 401, and finally emerges from the conical hole 406 of the internal threaded sleeve 402. At this point, the rope is in a preliminary relaxed state, facilitating subsequent adjustment.

[0080] When it is necessary to fix the first detection rope 202, rotate the inner threaded sleeve 402 towards the outer threaded sleeve 401. Since the inner threaded sleeve 402 and the outer threaded sleeve 401 are threadedly engaged, the inner threaded sleeve 402 will move along the axis of the outer threaded sleeve 401 during the rotation. The inner tapered hole 406 gradually fits against the tapered surface 404 at the outer end of the outer threaded sleeve 401. With continuous rotation, the tapered hole 406 generates a radial squeezing force on the tapered surface 404, while the annular uniformly distributed squeezing groove 405 on the outer threaded sleeve 401 can cause the tapered surface to undergo slight elastic contraction, thereby reducing the inner diameter of the outer threaded sleeve 401 and tightly clamping the first detection rope 202 inserted therein, thus fixing the rope tension.

[0081] When it is necessary to loosen the first detection rope 202, rotate the inner threaded sleeve 402 in the opposite direction away from the outer threaded sleeve 401. The fit between the tapered hole 406 and the tapered surface 404 gradually decreases, the radial extrusion force disappears, the tapered part of the outer threaded sleeve 401 resets under its own elasticity, the inner hole diameter returns to its original state, and the clamping state of the first detection rope 202 is released. At this time, the rope can be pulled to adjust the slack. After the adjustment is completed, rotate the inner threaded sleeve 402 in the forward direction again to relock it.

[0082] Example 3

[0083] Please refer to Figure 7Based on Embodiments 1 and 2, in one specific embodiment of this embodiment, the triggering mechanism 100 and the detection mechanism 200 are both set into two groups. The two groups of triggering mechanisms 100 and detection mechanisms 200 are respectively fixedly connected to the top of the cage body 300 near the two ends. The middle of the first detection rope 202 in the two groups of detection mechanisms 200 is fixedly connected to the second detection rope 203.

[0084] During operation, the two sets of triggering mechanisms 100 and detection mechanisms 200 work together through the design of dual-mechanism collaboration and lateral rope linkage to construct a three-dimensional detection network covering the length of the top of the cage.

[0085] Two sets of triggering mechanisms 100 and detection mechanisms 200 are fixed symmetrically at the top of the cage body 300 near both ends. Each set of mechanisms maintains an independent initial working state. The rotating plate 102 abuts against the limit switch 103 under the action of the torsion spring, and the first detection rope 202 maintains a preset tension through the tension adjustment component 400. At the same time, the second detection rope 203 is fixedly connected to the middle of the first detection rope 202 of the two sets of detection mechanisms 200, so that the second detection rope 203 crosses the top of the cage along the length of the cage, forming an "H-shaped" closed-loop triggering link together with the two sets of first detection ropes 202.

[0086] When the hoisting cage encounters an obstacle during its ascent, regardless of whether the obstacle extends from the middle, left, or right end of the top of the cage, it will preferentially contact and trigger the corresponding rope. If the obstacle contacts the first detection rope 202 at one end, that first detection rope 202 will transmit thrust to the corresponding set of rotating plates 102, driving the rotating plates to disengage from the limit switch 103 and triggering the signal transmission of that set of triggering mechanisms. If the obstacle contacts the second detection rope 203 in the middle, the second detection rope 203 will synchronously transmit force to the first detection ropes 202 on both sides, thereby driving both sets of rotating plates 102 to move simultaneously, causing both sets of triggering mechanisms to output a "problem detected" signal. Whether triggered by a single mechanism or by both mechanisms simultaneously, the signal will be transmitted to the controller 301, which will immediately initiate a safety response, triggering shutdown and alarm functions to ensure that the hoisting cage stops ascending in a timely manner. Once the obstacle is removed, the torsion springs of the two triggering mechanisms drive their respective rotating plates 102 to reset, causing the first detection ropes 202 on both sides to return to tension. At the same time, the second detection rope 203 is synchronously reset under the tension of the first detection ropes on both sides, so that the entire rope link returns to the initial detection position, waiting for the next obstacle trigger.

[0087] Example 4

[0088] Please refer to Figure 8Based on Embodiment 3, in one specific embodiment of this embodiment, a first inclined pressure bar 204 is rotatably connected to the first fixed frame 101. The middle part of the first inclined pressure bar 204 is placed on the second detection rope 203. A third detection rope 205 is fixedly connected between the two first inclined pressure bars 204 at the end away from the first fixed frame 101. A first tension spring 206 is fixedly connected between the first inclined pressure bar 204 and the first fixed frame 101. The third detection rope 205 is set at the same height and parallel to the second detection rope 203.

[0089] This setup, through a structure linking diagonal supports and longitudinal ropes, adds a front-side detection dimension to the existing detection capabilities. A first diagonal pressure bar 204 is rotatably connected to a first fixed frame 101, with its middle section resting on a second detection rope 203. The first diagonal pressure bars at both ends are connected via a third detection rope 205, forming a front trigger line parallel to the second detection rope 203. A first tension spring 206 connects the first diagonal pressure bar 204 to the first fixed frame 101, reducing the pressure of the first diagonal pressure bar 204 on the second detection rope 203, thus placing the second detection rope 203 and the third detection rope 205 in an initial state of equal height and parallelism.

[0090] During operation, when an obstacle touches the second detection rope 203, the second detection rope 203 is forced to move the first detection ropes 202 at both ends, triggering the original triggering mechanism. When the obstacle extends from above the front side of the cage, it will first contact the third detection rope 205 on the front side, pushing the third detection rope 205 to drive the first inclined pressure rod 204 to rotate around the connection point. The middle part of the first inclined pressure rod 204 will press down on the second detection rope 203, and then transmit the force to the first detection ropes 202 on both sides through the second detection rope 203, finally triggering the triggering mechanism. Both triggering paths will cause the triggering mechanism to send a signal to the controller, realizing the cage stopping and alarm.

[0091] Once the obstacle is removed, the first tension spring 206 pulls the first inclined pressure rod 204 to reset, the third detection rope 205 returns to its initial position, and at the same time, the second detection rope 203 is restored to its tensioned state under the action of the original reset mechanism, and the entire system returns to the state of being ready for detection.

[0092] Please refer to Figure 8 In one specific embodiment of this example, a second inclined pressure bar 207 is rotatably connected to each of the second fixed frames 201. The middle part of the second inclined pressure bar 207 is placed on the second detection rope 203. A fourth detection rope 208 is fixedly connected between the two second inclined pressure bars 207 at the end away from the second fixed frame 201. A second tension spring 209 is fixedly connected between the second inclined pressure bar 207 and the second fixed frame 201. The fourth detection rope 208 is set at the same height and parallel to the second detection rope 203.

[0093] This setup, through a structure linking diagonal supports and longitudinal ropes, adds a front-side detection dimension to the existing detection capabilities. A second diagonal pressure bar 207 is rotatably connected to the second fixed frame 201, with its middle section resting on the second detection rope 203. The second diagonal pressure bars 207 at both ends are connected via a fourth detection rope 208, forming a rear trigger line parallel to the second detection rope 203. A second tension spring 209 connects the second diagonal pressure bar 207 to the second fixed frame 201, reducing the pressure of the second diagonal pressure bar 207 on the second detection rope 203, thus placing the second detection rope 203 and the fourth detection rope 208 in an initial state of equal height and parallelism.

[0094] During operation, when an obstacle touches the second detection rope 203, the rope is stressed and causes the first detection ropes 202 on both sides to move, triggering the original triggering mechanism. When the obstacle extends from the upper rear side of the cage, it will first contact the fourth detection rope 208 on the rear side, pushing the fourth detection rope 208 to drive the second inclined pressure rod 207 to rotate around the connection point. The middle part of the second inclined pressure rod 207 will press down on the second detection rope 203, and then transmit the force to the first detection ropes 202 on both sides through the second detection rope 203, ultimately triggering the triggering mechanism. Both triggering paths will cause the triggering mechanism to send a signal to the controller, realizing the cage stopping and alarm.

[0095] Once the obstacle is removed, the second tension spring 209 pulls the second inclined pressure rod 207 to reset, the fourth detection rope 208 returns to its initial position, and at the same time, the second detection rope 203 is restored to its tensioned state under the action of the original reset mechanism, and the entire system returns to the state of being ready for detection.

[0096] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this example, the first detection rope 202, the second detection rope 203, the third detection rope 205, and the fourth detection rope 208 are all configured as steel wire ropes.

[0097] The first detection rope 202, the second detection rope 203, the third detection rope 205, and the fourth detection rope 208 are all made of steel wire rope. The core of this design is to utilize the physical properties of steel wire rope to adapt to the working logic of force transmission and obstacle interception of the cage upward detection device.

[0098] When the device is operating normally, the wire rope, with its high strength and low elongation, becomes a reliable transmission medium between the thrust of the obstacle and the action of the triggering mechanism. When the cage encounters an obstacle during its upward movement, the impact force or thrust of the obstacle on the wire rope can be directly and without delay transmitted along the axial direction of the wire rope.

[0099] For example, when an obstacle impacts the third detection rope 205, the thrust is quickly transmitted through the wire rope to the first inclined pressure rods 204 at both ends, driving the inclined pressure rods to rotate and compress the second detection rope 203. The second detection rope then transmits the force to the first detection ropes 202 on both sides, ultimately causing the rotating plate 102 of the triggering mechanism to move. Throughout the entire force transmission process, the wire rope will not experience excessive deformation due to stress, such as stretching or bending, which would cause the force transmission to attenuate, ensuring that the triggering mechanism can promptly capture the trigger signal.

[0100] Furthermore, the wire rope possesses a certain degree of rigidity and bending resistance, maintaining a preset lateral and longitudinal layout along the cage's upward path. For example, the second detection rope 203 and the third detection rope 205 remain parallel, preventing sagging or shifting due to their own weight or slight vibrations. When obstacles such as reinforcing bars or scaffold crossbars extend into the cage's upward path, the wire rope can effectively block them with its structural strength, preventing them from passing directly through the detection rope area without being detected. Simultaneously, it converts the force of the obstacle into power to drive the triggering mechanism, achieving the effect of triggering upon interception.

[0101] Meanwhile, when the tension adjustment component 400 adjusts the tension of the detection rope, the anti-compression characteristics of the wire rope ensure that when it is clamped by the external threaded sleeve 401 and the internal threaded sleeve 402, it will not undergo excessive deformation affecting the locking effect, nor will it be damaged due to excessive clamping force, thus ensuring the stability after tension adjustment. Furthermore, during the device reset process, the wire rope can quickly return to its initial tension state under the action of the reset component 104, the first tension spring 206, and the second tension spring 209, and will not experience fatigue deformation due to repeated stretching and reset, maintaining long-term stable force transmission and interception capabilities.

[0102] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cage upward movement detection device, characterized in that: The system includes a triggering mechanism (100) and a detection mechanism (200), the detection mechanism (200) being drivenly connected to the triggering mechanism (100). The triggering mechanism (100) and the detection mechanism (200) are respectively installed on the top of the cage body (300) near both sides. A controller (301) and a cage running motor (302) are installed on the cage body (300), the controller (301) and the cage running motor (302) being electrically connected, and the controller (301) and the triggering mechanism (100) being electrically connected. An alarm (303) is installed on the cage body (300), and the alarm (303) is electrically connected to the controller (301). The triggering mechanism (100) includes a first fixed frame (101), which is fixedly and vertically installed on the top surface of the cage body (300) away from the detection mechanism (200). A rotating plate (102) is hinged to the top of the first fixed frame (101). A limit switch (103) is fixedly installed on the first fixed frame (101) corresponding to the rotating plate (102). The limit switch (103) is electrically connected to the controller (301). A reset member (104) is provided between the rotating plate (102) and the first fixed frame (101). The reset member (104) drives the rotating plate (102) to rotate to the position of the limit switch. The trigger end of the switch (103) abuts against the rotating plate (102); the detection mechanism (200) is connected to the rotating plate (102); the detection mechanism (200) includes a second fixing frame (201), which is fixedly and vertically installed on the top surface of the cage body (300) away from the trigger mechanism (100), and a first detection rope (202) is fixedly connected to the top of the second fixing frame (201), and one end of the first detection rope (202) away from the second fixing frame (201) is connected to the rotating plate (102); both the trigger mechanism (100) and the detection mechanism (200) are set in two groups, and the two groups of trigger mechanisms (100) and the detection mechanism are connected to each other. The mechanisms (200) are fixedly connected to the top of the cage body (300) near both ends. The middle of the first detection rope (202) in the two sets of detection mechanisms (200) is fixedly connected to the second detection rope (203). The first fixed frame (101) is rotatably connected to the first inclined pressure rod (204). The middle of the first inclined pressure rod (204) is laid on the second detection rope (203). The two first inclined pressure rods (204) are fixedly connected to the end away from the first fixed frame (101) with the third detection rope (205). The first inclined pressure rod (204) and the first fixed frame (101) are fixedly connected to the first tension spring (206).

2. The cage upward detection device according to claim 1, characterized in that: The rotation center between the rotating plate (102) and the first fixed frame (101) is located on the rotating plate (102) at a position slightly lower than the limit switch (103), and the connection point between the first detection rope (202) and the rotating plate (102) is located on the rotating plate (102) at a position slightly higher than the limit switch (103).

3. The cage upward detection device according to claim 1, characterized in that: A protective plate (106) is fixedly connected to the first fixing frame (101), and the protective plate (106) covers the upper part of the limit switch (103).

4. The cage upward detection device according to claim 1, characterized in that: The first detection rope (202) is provided with a tension adjustment component (400) at one end away from the rotating plate (102). The tension adjustment component (400) includes an external threaded sleeve (401) and an internal threaded sleeve (402). The external threaded sleeve (401) is fixedly installed on the second fixing frame (201). The internal threaded sleeve (402) is threadedly connected to the external threaded sleeve (401). The second fixing frame (201) is provided with a through hole (403) that passes through the external threaded sleeve (401) and the internal threaded sleeve (402). The outer end of the external threaded sleeve (401) is provided with a conical surface (404). The conical surface (404) is provided with a plurality of annularly distributed extrusion grooves (405). The inner end of the internal threaded sleeve (402) is provided with a conical hole (406) corresponding to the conical surface (404).

5. The cage upward detection device according to claim 1, characterized in that: The second fixed frame (201) is rotatably connected to a second inclined pressure bar (207). The middle part of the second inclined pressure bar (207) is laid on the second detection rope (203). A fourth detection rope (208) is fixedly connected between the two second inclined pressure bars (207) at the end away from the second fixed frame (201). A second tension spring (209) is fixedly connected between the second inclined pressure bar (207) and the second fixed frame (201).

6. The cage upward detection device according to claim 5, characterized in that: The first detection rope (202), the second detection rope (203), the third detection rope (205), and the fourth detection rope (208) are all configured as steel wire ropes.

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