An ultra-long distance emergency stop device using a pull rope mechanism

Abstract

The utility model discloses a kind of ultra-long distance's emergency stop device of using pull rope mechanism, including operating lever, controller, box, operating cam, connecting rod and execution component, the connecting rod is horizontally slidably arranged in the box, and both ends of the connecting rod protrude from the both sides of the box, the operating cam is fixed on the connecting rod, the operating lever is arranged in the box, the operating lever is hinged with the box, the operating lever is respectively acted on the operating cam and the controller;When the connecting rod drives the operating cam to move, the operating cam drives the operating lever to operate the controller to trigger emergency stop signal, the execution component is connected with the operating lever.The utility model can realize unilateral or bilateral emergency stop control by pull rope and operating cam cooperation, and unilateral pull rope length can reach 100 meters, and can reliably ensure the generation of emergency stop signal.

Description

Technical Field

[0001] This utility model relates to an emergency stop device, and more particularly to an ultra-long-distance emergency stop device suitable for tire-mounted gantry cranes. Background Technology

[0002] In industrial environments, especially those involving the operation of large machinery such as rubber-tired container cranes, ensuring the safety of operators and surrounding workers is always a primary concern. These machines typically perform efficient cargo loading and unloading operations in busy ports or warehouses, covering a wide area that may include large storage yards and multiple work lines. Therefore, ensuring that operations can be quickly and effectively interrupted at any time to prevent potential accidents is crucial for maintaining workplace safety.

[0003] Existing emergency stop devices, such as emergency stop buttons, while effective over short distances, may have limited reliability and response speed in large industrial environments with long distances, obstructed visibility, or complex conditions. For example, in the operation of large cranes, operators may not be able to quickly activate the emergency stop button, or may not be able to immediately see or reach the stop device in an emergency, leading to safety accidents. Utility Model Content

[0004] To address the shortcomings of existing technologies, the main objective of this invention is to overcome these deficiencies by disclosing an ultra-long-distance emergency stop device using a rope-pulling mechanism. The device includes an operating lever, a controller, a housing, an operating cam, a connecting rod, and an execution component. The connecting rod is horizontally slidable within the housing, with both ends protruding from the sides of the housing. The operating cam is fixed to the connecting rod. The operating lever and the controller are housed within the housing, with the operating lever hinged to the housing. The operating lever acts on both the operating cam and the controller. When the connecting rod moves the operating cam, the operating cam drives the operating lever to activate the controller and trigger an emergency stop signal. The execution component is connected to the operating lever.

[0005] Furthermore, it also includes a compression spring, which is sleeved on the connecting rod and located on both sides of the operating cam, and applies an axial thrust to the operating cam using the compression spring.

[0006] Furthermore, a sealing element is provided between the connecting rod and the housing.

[0007] Furthermore, the operating cam is provided with a driving part and a holding part, the driving part being an inclined surface that gradually expands from the middle to both ends; the holding part extends from the driving part.

[0008] Furthermore, the actuation component includes a tension spring, a tightening screw, a support ring, and a pull rope. One end of the pull rope is connected to the connecting rod via the tightening screw, and the other end is connected to the tension spring. The support rings are spaced apart to support the pull rope.

[0009] Furthermore, the spacing between adjacent support rings is 4±1m.

[0010] Furthermore, the pull rope is made of high-strength fiber.

[0011] Furthermore, the pull cord is a high-performance multifilament yarn spun from liquid crystal polymer.

[0012] Furthermore, a drive rod is provided on the operating lever, and the end of the drive rod acts on the operating cam.

[0013] Furthermore, the operating lever is mounted inside the housing via a torsion spring, which provides a driving force for the operating lever to rotate the operating cam.

[0014] The beneficial effects achieved by this utility model are as follows:

[0015] This invention utilizes a pull rope in conjunction with an operating cam to achieve single-sided or double-sided emergency stop control, with a single-sided pull rope length of up to 100 meters, reliably ensuring the generation of an emergency stop signal. This effectively prevents accidents and significantly improves the safety of crane operations. The device employs optional single-sided or double-sided pull rope installation, allowing for adaptation to cranes of different sizes and compatibility with existing crane control systems. For large equipment requiring emergency stop devices in multiple locations, this device is more cost-effective than multiple button emergency stop devices, offering significant advantages in safety, reliability, ease of identification and operation, and adaptability to complex environments, particularly in industrial applications requiring coverage of large areas or operation in harsh environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of an ultra-long-distance emergency stop device using a rope pulling mechanism according to this utility model.

[0017] Figure 2 This is a structural diagram of a flexible spiral buckle;

[0018] Figure 3 This is a schematic diagram of the single-sided installation of the present invention;

[0019] Figure 4 This is a schematic diagram of the double-sided installation of the present invention;

[0020] The attached figures are labeled as follows:

[0021] 1. Operating lever, 2. Controller, 3. Housing, 4. Compression spring, 5. Operating cam, 6. Connecting rod, 7. Tension spring, 8. Tightening screw, 9. Locking nut, 10. Support ring, 11. Pull rope, 12. Drive lever, 51. Drive unit, 52. Holding unit. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] An emergency stop device for ultra-long distances using a rope-pulling mechanism, such as Figures 1-4 As shown, the system includes an operating lever 1, a controller 2, a housing 3, an operating cam 5, a connecting rod 6, and an actuator. The connecting rod 6 is horizontally slidable within the housing 3, with both ends protruding from the sides of the housing 3. The operating cam 5 is fixed to the connecting rod 6 and moves synchronously with the axial movement of the connecting rod 6. The operating lever 1 and controller 2 are located within the housing 3, with the operating lever 1 hinged to the housing 3. The operating lever 1 acts on both the operating cam 5 and the controller 2. When the operating cam 5 moves axially, it controls the operating lever 1 to rotate clockwise, triggering an emergency stop signal from the controller 2, thereby stopping the crane. The actuator is connected to the connecting rod 6, and thus drives the connecting rod 6 to move axially.

[0024] In one embodiment, such as Figures 1-4 As shown, it also includes a compression spring 4, which is sleeved on the connecting rod 6 and located on both sides of the operating cam 5. The compression spring 4 applies an axial thrust to the operating cam 5. For example, pulling the connecting rod 6 to the left controls the operating cam 5 to move to the left, compressing the compression spring 4 on the left side. The compression spring 4 prevents accidental pulling.

[0025] In one embodiment, such as Figures 1-4 As shown, a seal is installed between the connecting rod 6 and the housing 3. The seal is made of UV-resistant neoprene rubber, which increases the dustproof and waterproof effect.

[0026] In one embodiment, such as Figures 1-4 As shown, the operating cam 5 is provided with a driving part 51 and a holding part 52. The driving part 51 is an inclined surface that gradually expands from the middle to both ends; the holding part 52 extends from the driving part 51.

[0027] In one embodiment, such as Figures 1-4 As shown, a drive rod 12 is provided on the operating lever 1, and the end of the drive rod 12 acts on the operating cam 5. Preferably, the end of the drive rod 12 is provided with an arc surface.

[0028] In the above embodiments, such as Figures 1-4 As shown, the contact portion between the operating lever 1 and the operating cam 5 moves along the drive unit 51 to drive the operating lever 1 to rotate clockwise. When it reaches the holding part 52, the emergency stop signal of the controller 2 is triggered. The drive lever 12 remains in contact with the surface of the operating cam 5; that is, even at the extreme left and right positions of the operating cam 5, the drive lever 12 can still contact the surface of the operating cam 5.

[0029] In one embodiment, such as Figures 1-4 As shown, the actuating assembly includes a tension spring 7, a tightening screw 8, a support ring 10, and a pull rope 11. One end of the pull rope 11 is connected to the connecting rod 6 via the tightening screw 8, and the other end is connected to the tension spring 7. The support rings 10 are spaced apart to support the pull rope 11. By rotating the locking nut 9 on the tightening screw 8, the pull rope 11 can be loosened or tightened to adjust its tension. The tension spring 7 at one end ensures that the pull rope 11 has sufficient pulling distance; that is, when the pull rope 11 is pulled, the compression spring 4 is compressed, and the operating cam 5 moves axially until it reaches its limit position; if the pull rope 11 continues to be pulled at this time, the tension spring 7 is stretched, thereby amplifying the operating range.

[0030] In one embodiment, such as Figures 1-4 As shown, the spacing between adjacent support rings 10 is 4±1m. The support rings 10 support the pull rope 11 to maintain its tension and reduce slack, ensuring stable operation of the pull rope under different working conditions.

[0031] In the above embodiments, such as Figures 1-4 As shown, the drawstring 11 is made of high-strength fiber. Preferably, the drawstring is a high-performance multifilament yarn spun from a liquid crystal polymer; it possesses high strength, a low coefficient of thermal expansion, excellent creep resistance, and high impact resistance. In long-distance applications, the drawstring maintains its structural integrity and function, and is not easily broken or damaged, ensuring reliability and durability in various environments.

[0032] In one embodiment, such as Figures 1-4 As shown, the operating lever 1 is installed inside the housing 3 by a torsion spring, which provides the operating lever 1 with the driving force to rotate the operating cam 5.

[0033] When using this utility model, such as Figures 1-4As shown, the pull rope 11 is arranged along the main beam of the RTG, with a support ring 10 every 4 meters to maintain the tension of the pull rope and reduce slack; it is connected to the connecting rod 6. By pulling the pull rope 11, the connecting rod 6 is moved, causing the operating cam 5 to move axially, which in turn drives the operating lever 1 to rotate counterclockwise, thereby triggering an emergency stop signal from the controller 2. After the emergency stop, an identification reset procedure can be set, and the crane can only be restarted after being reset by authorized personnel. The operating lever 1 is reset under the action of a torsion spring.

[0034] Among them, such as Figure 3 The diagram shows a schematic of an emergency stop device with a single-sided pull rope. The single-sided pull rope can be set for a maximum distance of 100 meters. If the emergency stop range exceeds 100 meters, a double-sided pull rope upgrade structure can be installed, such as... Figure 4 As shown; achieves a maximum emergency stop range of 200 meters.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. An emergency stop device for ultra-long distances using a rope-pulling mechanism, characterized in that, The device includes an operating lever, a controller, a housing, an operating cam, a connecting rod, and an actuator. The connecting rod is horizontally slidable within the housing, with both ends protruding from the sides of the housing. The operating cam is fixed to the connecting rod. The operating lever and the controller are housed within the housing, with the operating lever hinged to the housing. The operating lever acts on both the operating cam and the controller. When the connecting rod moves the operating cam, the operating cam drives the operating lever to activate the controller and trigger an emergency stop signal. The actuator is connected to the operating lever.

2. The emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 1, characterized in that, It also includes a compression spring, which is sleeved on the connecting rod and located on both sides of the operating cam, and applies an axial thrust to the operating cam using the compression spring.

3. The emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 1, characterized in that, A sealing element is provided between the connecting rod and the housing.

4. The emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 1, characterized in that, The operating cam is provided with a driving part and a holding part. The driving part is an inclined surface that gradually expands from the middle to both ends. The holding part extends from the driving part.

5. The emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 1, characterized in that, The actuation component includes a tension spring, a tightening screw, a support ring, and a pull rope. One end of the pull rope is connected to the connecting rod via the tightening screw, and the other end is connected to the tension spring. The support rings are spaced apart to support the pull rope.

6. The emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 5, characterized in that, The distance between adjacent support rings is 4±1m.

7. An emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 5, characterized in that, The pull rope is made of high-strength fiber.

8. An emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 7, characterized in that, The pull cord is made of high-performance multifilament yarn spun from liquid crystal polymer.

9. A long-distance emergency stop device using a rope-pulling mechanism according to claim 1, characterized in that, A drive rod is provided on the operating lever, and the end of the drive rod acts on the operating cam.

10. An emergency stop device for ultra-long distances using a rope-pulling mechanism according to claim 1, characterized in that, The operating lever is mounted inside the housing via a torsion spring, which provides a driving force for the operating lever to rotate the operating cam.

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