Arresting device

Abstract

An arresting device, comprising a rope cable reel, a turbine oil tank and a caliper brake disc which are successively in driving connection to each other, and a hydraulic lock connected via an oil passage to the turbine oil tank and passive calipers of the caliper brake disc. The turbine oil tank conveys oil via the oil passage to the hydraulic lock so as to unlock the hydraulic lock and thus activate the passive calipers to clamp the caliper brake disc. When the caliper brake disc brakes, the driving connection can stop the rope cable reel from rotating. The process of the turbine oil tank conveying the oil to the hydraulic lock via the oil passage to unlock the hydraulic lock and thus activate the passive calipers provides buffering resistance and buffering time for braking the rope cable reel. Resistance applied by the arresting device is from the resistance of the hydraulic turbine oil tank to dynamic friction, allowing for a small resistance change and accurate estimation.

Description

A blocking device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 14, 2023, with application number 202311514586.9 and invention name “A Blocking Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of buffering and decelerating fast-moving objects, and more specifically, relates to a blocking device. Background Art

[0003] In conventional technology, the time from contact between the arresting cable and the target object to cessation of movement is short, making it difficult for the arresting device to accurately determine when to apply resistance to the cable. To address this issue, resistance is applied to the cable before the arresting device and the target object come into contact. In practice, this method often results in the arresting device failing to block due to excessive impact, such as excessive resistance on the cable, excessive speed of the target object, or the initial position of the cable being perpendicular to the target object's speed.

[0004] In summary, the resistance exerted by traditional arresting devices changes from static friction to dynamic friction, and the resistance changes greatly and cannot be accurately estimated.

[0005] Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a blocking device to solve the problem of blocking failure caused by excessive impact in the blocking system of the known technology. The technical solution is as follows:

[0007] A blocking device, comprising a rope drum and a clamp brake disc in transmission connection, and further comprising:

[0008] a turbine oil tank disposed between the rope drum and the caliper brake disc, the turbine oil tank being in driving connection with the rope drum and the caliper brake disc;

[0009] A hydraulic lock is connected to the turbine oil tank and the passive clamp of the caliper brake disc through an oil circuit. The turbine oil tank transports oil to the hydraulic lock through the oil circuit. After the hydraulic lock is opened, the passive clamp is activated to clamp the caliper brake disc.

[0010] Optional, including:

[0011] After the arresting cable is hit by the target object, it stretches and extends, driving the rope drum, the turbine oil tank and the clamp brake disc connected in the transmission to rotate together;

[0012] The rotating turbine oil tank provides buffer resistance for the rope drum and opens the hydraulic lock;

[0013] The hydraulic lock after opening locks the clamp brake disc, thereby slowing down the rope disc and stopping its rotation.

[0014] Optionally, the rotating turbine oil tank provides buffer resistance for the rope drum, including:

[0015] The turbine oil tank includes a turbine and high-density oil. The high-density oil provides resistance to the turbine to prevent the turbine from rotating, thereby providing buffering resistance for the rope drum.

[0016] Optionally, opening the hydraulic lock includes:

[0017] The turbine rotates to deliver the high-density oil through the oil passage to the hydraulic lock, opening the hydraulic lock.

[0018] Optionally, the high-density oil is an oil whose viscosity reaches a preset threshold.

[0019] Optionally, activating the passive caliper includes:

[0020] The hydraulic lock inputs the high-density oil to the passive caliper through the oil passage, pushing the buckle on the passive caliper, thereby activating the passive caliper to clamp the caliper brake disc.

[0021] Optionally, the caliper brake disc includes a mechanical spring;

[0022] The mechanical spring is used to provide the clamping force.

[0023] Optional, including:

[0024] The passive caliper is mounted on the caliper brake disc.

[0025] Optionally, it further includes a motor mounted on the rotating shaft and capable of reverse rotation;

[0026] The motor is used to recover the rope and oil.

[0027] Optionally, also include:

[0028] When the blocking device is finished working, manually reset the hydraulic lock and the passive clamp

[0029] As can be seen from the above scheme, the blocking device disclosed in this application includes a rope drum, a turbine oil tank, and a caliper brake disc that are sequentially connected by transmission, a hydraulic lock that is connected to the turbine oil tank and the passive clamp of the caliper brake disc through an oil circuit, and the turbine oil tank transports oil to the hydraulic lock through the oil circuit, and after the hydraulic lock is opened, the passive clamp is activated to clamp the caliper brake disc. This application is designed as a transmission connection, which can stop the rope drum from rotating when the caliper brake disc is braked; the turbine oil tank transports oil to the hydraulic lock through the oil circuit, and after the hydraulic lock is opened, the passive clamp is activated. This process provides buffering resistance and buffering time for the braking rope drum. The resistance applied by the blocking device of this application is from the hydraulic turbine oil tank resistance to the dynamic friction, and the resistance change is small, which can be accurately estimated. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a schematic diagram of a hydraulic buffer type blocking device provided in an embodiment of the present application;

[0032] FIG2 is a structural diagram of the blocking device provided by the present application;

[0033] FIG3 is a schematic diagram of the operation of the blocking device provided in this application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] Arresting devices typically use arresting cables to apply resistance to objects moving at a certain speed. These objects can be high-speed objects such as aircraft and vehicles. The cables are positioned perpendicular to the direction of movement of the object. When the object strikes the cables, it continuously pulls on them, slowing it down and eventually bringing it to a standstill.

[0036] However, since the time from contact between the arresting cable and the arrested equipment to the cessation of movement is short, it is difficult to accurately determine the time when the arresting device applies resistance to the arresting cable. In theory, tension should be applied to both ends of the arresting cable at the moment the arrested equipment contacts the arresting cable. However, due to the high movement speed of the arrested equipment, the real-time speed of the arrested equipment cannot be obtained through manual or sensor monitoring.

[0037] To prevent the arrested device from colliding with the arresting cable before resistance is applied, resistance is applied to the arresting cable before the arresting device and the cable come into contact. At the moment the arrested device and the cable collide, the arresting device may fail due to the huge impact, resulting in arrest failure.

[0038] For example, referring to FIG1 , a schematic diagram of the hydraulic buffer type blocking device provided by the present application is shown in the figure:

[0039] This arresting gear, used on aircraft carriers to arrest aircraft, is a primarily hydraulic device installed below the deck. It primarily comprises an arresting cable, cable supports, a lifting pulley, a deck-crossing pulley, a cable end buffer system, a guide pulley, an oil cooler, an accumulator, an expansion air bottle, a crosshead, a control valve drive system, a master hydraulic cylinder, a fixed-length runaway control valve, a fixed pulley block, and a cable. The arresting gear pre-applies a certain resistance to the cable. At the moment of collision, the arresting gear may fail due to the significant impact, resulting in an arresting failure.

[0040] The specific reasons for the failure of the arresting are the fast moving speed of the arrested equipment mentioned above; the initial state of the arresting cable is perpendicular to the moving speed of the arrested equipment. At this time, the resultant force of the tension in the direction of the arresting cable along the rope and the impact force perpendicular to the rope direction is the largest; the resistance on the arresting cable is pre-applied, and the applied resistance is large. It is mainly achieved by the friction force of the brake disc and the clamp clamping to achieve the application of pre-resistance. After the resistance is applied, the brake disc is stationary, and the static friction force provided is the largest at this time. When the arrested equipment hits the arresting cable, it will drive the brake disc to rotate. Once the brake disc starts to rotate, the resistance provided is changed from static friction to dynamic friction. The dynamic friction is less than the static friction, and the arresting failure is very likely to occur.

[0041] In addition, the blocking process of traditional blocking devices is from static friction to dynamic friction, and the resistance changes greatly and cannot be accurately estimated. Specifically, the pre-applied resistance can theoretically be inferred based on the friction coefficient and deceleration. However, in actual applications, it cannot be accurately inferred based on the friction coefficient and deceleration. The first reason is that the friction coefficient is only a theoretical value. The actual friction coefficient is related to the surface state, degree of wear, and ambient temperature and humidity. Therefore, it cannot be accurately estimated; the second reason is that the entire blocking process is short, and the impact of the inaccurate friction coefficient will increase. In summary, the impact change from static friction to dynamic friction is relatively large and cannot be accurately estimated.

[0042] In order to solve the above problems, the present application provides a blocking device. Referring to FIG2 , the component structure diagram of the blocking device provided by the present application is shown in the figure:

[0043] The device includes a rope drum and a clamp brake disc that are transmission-connected, and most importantly, a turbine oil tank placed between the rope drum and the clamp brake disc, and also includes a hydraulic lock connected to the turbine oil tank and the passive clamp of the clamp brake disc through an oil circuit.

[0044] Correspondingly, referring to FIG3 , a schematic diagram of the working of the blocking device provided by the present application is shown in the figure:

[0045] The rope drum, turbine oil tank and clamp brake disc are connected by transmission. When the arresting cable is hit by the target blocking object, the arresting cable will be stretched and extended, and the rope drum will rotate accordingly, which will also drive the turbine oil tank and the clamp brake disc to rotate at the same time. The turbine oil tank includes a turbine and oil. The oil is a high-density oil with a viscosity much higher than water, and can be a high-damping oil. The rotation of the rope drum will drive the turbine to rotate. The high-density oil will give the turbine resistance, thereby affecting the rotation of the rope drum, which can play a buffering role at the moment when the arresting cable contacts the blocked equipment and in the early stage of the arresting cable being stretched. Specifically, the turbine oil tank is equivalent to giving the rope drum a relatively small pulling force at the moment when the arresting cable contacts the blocked equipment, which can reduce the impact of the target blocking object on the blocking device. In addition to using the turbine oil tank as a buffer device in this application, it can also be replaced by any device that can achieve a buffering effect.

[0046] It should be noted that the high-density oil can be selected according to the specific buffer deceleration requirements that the arresting device wants to achieve.

[0047] When the turbine rotates, the high-density oil in the turbine oil tank will be pushed into the oil circuit, which can also be called a pipeline. The high-density oil is transported to the hydraulic lock through the oil circuit, and the hydraulic lock will change from a closed state to an open state. After that, the high-density oil will enter the passive clamp through the oil circuit, triggering the clamping action of the passive clamp. It should be noted that the special feature of the clamp in this application is that it is "passive". The clamping action of the passive clamp is applied by an internal mechanical spring, and no external power source is required. The clamp only requires an external action command. In this application, the action command comes from the hydraulic lock. After that, it can be clamped without a power source or control.

[0048] Specifically, a simple, purely mechanical mechanism can be designed. The high-density oil in the hydraulic lock, also known as hydraulic oil, reaches the mechanism's piston cylinder through the oil circuit. The piston then moves, pushing the clip connected to the piston. The clip serves as the action stop for the passive clamp. The clip action successfully activates the clamp, triggering the clamping action of the passive clamp. After the passive clamp is actuated, it clamps on both sides of the clamp brake disc. At this time, the clamp brake disc changes from a rotating state to a stationary state, and a pre-set clamping force is applied to the rope drum through the coupling, thereby generating a resistance greater than the hydraulic resistance of the turbine oil tank, causing the target to slow down and stop.

[0049] It should be noted that the blocking device provided in the present application can automatically activate the blocking kinetic energy of the target blocking object by the stretching action of the blocking cable, has a buffering function, does not require manual or control system participation, has high stability, and adopts a mechanical structure with high reliability.

[0050] In summary, the blocking device disclosed in the present application includes a rope drum, a turbine oil tank, and a caliper brake disc that are sequentially connected by transmission, a hydraulic lock that is connected to the turbine oil tank and the passive clamp of the caliper brake disc via an oil circuit, the turbine oil tank delivers oil to the hydraulic lock via the oil circuit, and after the hydraulic lock is opened, the passive clamp is activated to clamp the caliper brake disc. The present application is designed as a transmission connection that can stop the rope drum from rotating when the caliper brake disc is braked; the turbine oil tank delivers oil to the hydraulic lock via the oil circuit, and after the hydraulic lock is opened, the passive clamp is activated. This process provides buffering resistance and buffering time for the braking rope drum. The resistance applied by the blocking device of the present application ranges from hydraulic turbine oil tank resistance to dynamic friction, and the resistance variation is small, which can be accurately estimated.

[0051] It should be noted that at the moment the arresting cable contacts the target arresting object, even without the resistance of the caliper brake disc, the arresting device provided in this application can provide a smaller force that matches the stretching speed of the arresting cable through the friction between the high-density oil in the turbine oil tank and the turbine, providing a larger braking force for the subsequent caliper brake disc as a buffer, preventing the arresting cable from being instantly subjected to the impact of excessive tension on the arresting device, and playing a protective role for the entire arresting device.

[0052] At the same time, because the turbine oil tank is added to the blocking device, the passive clamp can be activated through the hydraulic lock in a short time after the turbine rotates, thereby applying greater resistance. The passive clamp is automatically activated throughout the process without the need for a control system, which is timely and reliable.

[0053] The blocking device provided in this application is reusable: a reversible motor can be installed on the rotating shaft to recover the rope and high-density oil. Hydraulic locks and passive clamps can be manually reset. If the mechanical clip mentioned above is used, restoring the passive clamp requires the operator to manually reset the clamp and clip. The blocking device is generally not used continuously. In addition to using the motor to recover the oil, it can also be replenished simultaneously.

[0054] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similarities between the various embodiments can be referred to in conjunction with each other. For device embodiments, since they are generally similar to method embodiments, their description is relatively simple, and for relevant details, reference can be made to the description of the method embodiments.

[0055] For the convenience of description, the above systems or devices are described as being divided into various modules or units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0056] Through the description of the above embodiments, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application or certain parts of the embodiments.

[0057] Finally, it should be noted that, in this document, relational terms such as first, second, third, and fourth are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0058] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A blocking device, comprising a rope disc and a clamp brake disc connected in a transmission manner, characterized in that: Also includes: A turbine oil tank disposed between the rope drum and the caliper brake disk, the turbine oil tank being drivingly connected to the rope drum and the caliper brake disk; A hydraulic lock is connected to the turbine oil tank and the passive clamp of the caliper brake disc through an oil circuit. The turbine oil tank transports oil to the hydraulic lock through the oil circuit. After the hydraulic lock is opened, the passive clamp is activated to clamp the caliper brake disc.

2. The blocking device according to claim 1, characterized in that: include: After the arresting cable is hit by the target arresting object, it stretches and extends and drives the rope drum, the turbine oil tank and the clamp brake disc connected in the transmission to rotate together; The rotating turbine oil tank provides buffer resistance for the rope drum and opens the hydraulic lock; The opened hydraulic lock locks the clamp brake disc, thereby slowing down the rope disc and stopping its rotation.

3. The blocking device according to claim 2, characterized in that: The rotating turbine oil tank provides buffer resistance for the rope drum, including: The turbine oil tank comprises a turbine and high-density oil. The high-density oil provides resistance to the turbine to prevent the turbine from rotating, thereby providing buffer resistance to the rope drum.

4. The blocking device according to claim 3, characterized in that: The step of opening the hydraulic lock comprises: The turbine rotates to deliver the high-density oil through the oil passage to the hydraulic lock to open the hydraulic lock.

5. The blocking device according to claim 4, characterized in that: The high-density oil is oil whose viscosity reaches a preset threshold.

6. The blocking device according to claim 3, characterized in that: The activating the passive caliper comprises: The hydraulic lock inputs the high-density oil to the passive caliper through the oil passage, pushes the buckle on the passive caliper, and activates the passive caliper to clamp the caliper brake disc.

7. The blocking device according to claim 1, characterized in that: The caliper brake disc includes a mechanical spring; The mechanical spring is used to provide the clamping force.

8. The blocking device according to claim 1, characterized in that: include: The passive caliper is mounted on the caliper brake disc.

9. The blocking device according to claim 1, characterized in that: Also included is a motor mounted on the rotating shaft and capable of reverse rotation; The motor is used to recover the rope and oil.

10. The blocking device according to claim 1, characterized in that: Also includes: When the blocking device finishes working, the hydraulic lock and the passive clamp are manually reset.

Images