Trailer rope with fracture protection function

Abstract

The invention discloses a tow rope with a fracture protection function, and relates to the technical field of tow ropes, the tow rope comprises a main rope, rope knots are wound at the two ends of the main rope, buffer heads are arranged at the two ends of the main rope, multistage buffer assemblies are installed in the buffer heads, and the rope knots and the multistage buffer assemblies are attached to each other. The end, away from the main rope, of the buffering head is fixedly connected with a connector, the upper portion of the connector is fixedly connected with a hook ring, the end, away from the buffering head, of the connector is fixedly connected with a locking assembly, when the main rope breaks, the main rope rebounds in the protective sleeve, and during the period, the broken main rope can be limited through the protective sleeve; and the resilience force of the main rope is buffered through the sheath, so that the resilience force is effectively buffered, the possibility that the resilience force of the main rope is too large to damage vehicles or people is reduced, and the safety of the tow rope is improved.

Description

Technical Field

[0001] This application relates to the field of trailer rope technology, and in particular to a trailer rope with breakage protection function. Background Technology

[0002] A tow rope is a flexible rope tool used for vehicle rescue or towing. It is usually made of high-strength materials and equipped with hooks, buckles and other connecting devices at both ends. When a vehicle is in trouble (such as slipping or breaking down), it can transfer traction to move the vehicle by connecting the rescue vehicle and the vehicle being rescued. It is a commonly used emergency equipment in road rescue and outdoor off-roading.

[0003] There are various types of tow ropes. According to the material, they can be divided into synthetic fiber tow ropes and steel wire ropes, among which synthetic fiber ropes are more suitable for civilian vehicles due to their lightness and moderate elasticity. According to the strength, they can be divided into light, medium and heavy-duty ropes. Different types of tow ropes have different uses. Light ropes are mostly used for small vehicle rescue on daily roads, while heavy-duty ropes are suitable for towing heavy vehicles in industrial or off-road environments, meeting the towing needs of different weights and scenarios.

[0004] In vehicle towing rescue scenarios, if a common tow rope breaks, it will rebound with tremendous kinetic energy, sweeping or being thrown into the air. If the broken rope is not intervened in advance, the rebound force generated when the tow rope breaks is extremely destructive, causing damage to the vehicle or even injuring people, which is not conducive to people's safe use. Summary of the Invention

[0005] The purpose of this application is to address the problem in the prior art that if a trailer rope breaks, it will rebound with enormous kinetic energy, sweep across, or be thrown into the air. If the broken rope is not intervened beforehand, the rebound force generated when the trailer rope breaks is extremely destructive, which can damage the vehicle or even injure people, thus jeopardizing people's safe use. This application provides a trailer rope with a breakage protection function.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A trailer rope with breakage protection includes a main rope, with rope end knots at both ends and a buffer head at each end. The buffer head has a multi-stage buffer assembly installed inside, and the rope end knots are in close contact with the multi-stage buffer assembly. A connector is fixedly connected to the end of the buffer head away from the main rope, and a hook is fixedly connected to the upper part of the connector. A locking assembly is fixedly connected to the end of the connector away from the buffer head. The multi-stage buffer assembly and the locking assembly are kinetically connected. Multiple spare pullers are installed at the end of the buffer head near the main rope, and a clamping assembly is installed at the other end of the buffer head. The clamping assembly corresponds to each of the multiple spare pullers. The multi-stage buffer assembly and the clamping assembly correspond to each other. Multiple airbag assemblies are connected to one end of the buffer head. Ignition components are fixedly connected to both sides of the buffer head, and the output end of the ignition component is connected to the airbag assembly. The multi-stage buffer assembly and the ignition component correspond to each other. A sheath is fitted on the main rope, and the spare pullers and airbag assemblies are located between the main rope and the sheath.

[0008] By adopting the above technical solution, when the main rope breaks, it rebounds inside the sheath. During this process, the sheath can restrict the broken main rope and buffer the rebound force of the main rope, effectively buffering the rebound force and reducing the possibility of excessive rebound force of the main rope causing damage to vehicles or people, thereby improving the safety of the tow rope.

[0009] Furthermore, the multi-stage buffer assembly includes a connecting box fixedly connected inside the buffer head, with multiple telescopic rods running through the connecting box. One end of each telescopic rod is fixedly connected to a pressure plate, and the other end is fixedly connected to a second buffer component. One side of the pressure plate is attached to the end of a rope, and a spring is sleeved on the telescopic rod.

[0010] By adopting the above technical solution, the connecting box, telescopic rod, spring 1 and pressure plate form the first buffer component, which can buffer the tensile force of the main rope.

[0011] Furthermore, the second buffer includes a force transmission plate slidably installed inside the buffer head, and a spring is fixedly connected to the side of the force transmission plate away from the connecting box.

[0012] By adopting the above technical solution, the initial critical load value of spring 2 in the elastic compression stage is consistent with the ultimate tensile strength value that the main rope can withstand during the tension process.

[0013] Furthermore, pressure rods are fixedly connected to both sides of the force transmission plate, and ear plates are fixedly connected to both sides of the force transmission plate. An abutment rod is fixedly connected to one side of the ear plate. The pressure rods correspond to the ignition element, and the abutment rod corresponds to the clamping assembly.

[0014] By adopting the above technical solution, when the pressure rod moves, it can drive the ignition component.

[0015] Furthermore, the ignition component includes an inflatable material box fixedly connected to one side of the buffer head. A small igniter is fixedly connected to one end of the inflatable material box. An air chamber is opened at one end of the buffer head. A plurality of ventilation slots are connected to one side of the air chamber. The ventilation slots are connected to the airbag assembly. An air inlet is opened on one side of the buffer head. One side of the inflatable material box is connected to the air inlet.

[0016] By adopting the above technical solution, the interior of the gas-filled material box is filled with sodium azide, and the output end of the small igniter is located inside the gas-filled material box. The material inside the gas-filled material box is ignited by the small igniter.

[0017] Furthermore, one end of the buffer head has multiple mounting cavities, and the spare puller includes a weld joint installed inside the mounting cavity, with a spare rope fixedly connected to one end of the weld joint.

[0018] By adopting the above technical solution, when the main rope breaks, the spare rope can extend under inertia and take over the dragging work in place of the main rope.

[0019] Furthermore, the clamping assembly includes multiple mounting boxes fixedly connected to the outside of the buffer head. A limit block is slidably connected to one side of the interior of the mounting box. A drive ring is fixedly connected to one end of the limit block. A pressure member is slidably connected inside the mounting box. The drive ring and the pressure member are in contact and abut against each other.

[0020] By adopting the above technical solution, the side of the drive ring near the pressure member is inclined and fits well with the structure of the pressure member.

[0021] Furthermore, the pressure component includes a pressure block that is slidably installed inside the mounting box. The top two ends of the pressure block are provided with inclined slopes, and the top of the pressure block is fixedly connected with mutually symmetrical tension springs. One end of the tension spring is fixedly connected to the top of the mounting box.

[0022] By adopting the above technical solution, the pressure block and the buffer head are slidably connected, and the outer surface of the pressure block is smoothed to reduce the friction when the pressure block moves.

[0023] Furthermore, the locking assembly includes a sleeve fixedly connected to one end of the connector. An inner column is slidably connected inside the sleeve, and a spring three is fixedly connected to one side of the inside of the sleeve. The spring three is fixedly connected to one end of the inner column. A locking arc plate is fixedly connected to the end of the inner column away from the spring three. Limit rods are fixedly connected to both sides of the inner column. Limiting components are installed on both sides of the connector. A pull rope is installed on the limiting component, and one end of the pull rope is fixedly connected to the pressure rod.

[0024] By adopting the above technical solution, the side of the locking arc plate near the hook ring has an arc-shaped structure, and the inner side of the arc is coated with a rubber anti-slip coating.

[0025] Furthermore, the limiting component is installed on a torsion spring reset shaft on one side of the connector. A limiting disc is fixedly connected to the torsion spring reset shaft, and a winding reel is fixedly connected to one end of the torsion spring reset shaft. One end of the pressure rod is wound around the winding reel. A flow groove is provided on one side of the limiting disc, and the limiting rod is slidably installed inside the limiting disc.

[0026] By adopting the above technical solution, the limit plate can be reset by the operation of the torsion spring reset shaft.

[0027] In summary, this application includes at least one of the following beneficial effects;

[0028] 1. In this application, the trailer rope is equipped with a main rope and multiple spare pullers. When the main rope breaks during towing operations, the spare pullers can be extended under the action of tensile inertia. The spare pullers can then take over the towing work, thus avoiding the phenomenon that the trailer will suddenly lose tension and become uncontrollable after the main rope breaks, thereby improving the safety of the trailer and the trailer rope itself.

[0029] 2. In this application, when the main rope breaks, the main rope rebounds inside the sheath. During this process, the sheath can restrict the broken main rope and buffer the rebound force of the main rope, effectively buffering the rebound force and reducing the possibility of excessive rebound force of the main rope causing damage to vehicles or people, thereby improving the safety of the trailer rope.

[0030] 3. In this application, when the trailer rope is used for towing, the main rope will be stretched by tensile force. During this process, as the tensile force continues to increase, the main rope can pull the multi-stage buffer components at both ends, so that the multi-stage buffer components can provide multi-stage buffering for the main rope. When the main rope is stretched, it can pull the first buffer component in the multi-stage buffer components to operate, thereby buffering the tensile force on the main rope. Then, if the tensile force continues to increase and the main rope is about to reach the tensile load limit, it can pull the second buffer component in the multi-stage buffer components, thereby providing secondary buffering for the main rope. This achieves multi-stage buffering of the main rope. Through a progressive stress relief method, the probability of breakage of the main rope is reduced from the source, and the protective force and the stress intensity are dynamically matched, thereby improving the tensile strength of the trailer rope, reducing the possibility of the main rope breaking, and improving the safety of the trailer rope.

[0031] 4. In this application, the sheath contains multiple airbag assemblies made of highly wear-resistant and highly elastic material. These airbag assemblies work in conjunction with the sheath to protect the main rope during tension, preventing scratches or impact damage from external objects and reducing the likelihood of breakage during towing operations. Simultaneously, when the main rope pulls the second buffer in the multi-stage buffer assembly, the second buffer moves towards the ignition element. When the second buffer is pulled to its maximum limit by the main rope, it triggers the ignition element, causing it to rapidly inflate the airbag assemblies. This rapid inflation of the airbag assemblies within the sheath reduces the rebound range of the main rope. This system provides protection against breakage of the main rope. When the main rope breaks and rebounds, the inflatable airbag assembly blocks the rebounding rope and buffers the rebound force, further reducing the range of the main rope's swing. Combined with the sheath, it further suppresses the rebound of the main rope, reducing losses caused by rope breakage. Through the combined activation of the multi-stage buffer components, ignition element, and airbag assembly, the multi-stage buffer components reduce the probability of main rope breakage. Simultaneously, inflation is completed just before the main rope breaks, achieving the dual effect of limiting the rebound range before breakage and providing elastic buffering after breakage. This forms a double insurance of active prevention and passive protection, further improving the safety of the trailer rope.

[0032] 5. In this application, when the second buffer inside the multi-stage buffer assembly is pulled, its internal components can simultaneously drive the clamping assembly, causing the clamping assembly to operate, thereby clamping and fixing the ends of multiple spare pullers, improving the connection strength and stability of their ends. Through the synergistic effect of the spare pullers and the clamping assembly, it is ensured that when the main rope breaks, the spare pullers immediately bear the tension and the ends do not loosen. This reduces the possibility that when the main rope breaks, the spare pullers will suddenly be subjected to tensile force, causing the ends to suddenly be subjected to large stress and loosen or shift. It also reduces the possibility that multiple spare pullers will gradually break due to different tensile forces, thus improving the safety of the trailer rope.

[0033] 6. In this application, when the second buffer component inside the multi-stage buffer assembly is pulled, its internal components can also drive the locking assembly to operate. When the second buffer component is about to be pulled to its maximum limit, the locking assembly's release restriction is triggered, causing its internal components to extend and thus fit and squeeze the external tow hook. This, combined with the hook ring, tightly presses and fixes the external tow hook. When the main rope breaks, its broken end will violently bounce due to elastic potential energy. The squeezing friction generated between the locking assembly, hook ring, and external tow hook can effectively reduce the frequency and range of swaying caused by the bounce at the hook end, preventing the hook ring from breaking. The phenomenon of unhooking is mitigated by the combination of the sheath and the inflated airbag assembly, which can minimize the rebound of the main rope upon breakage. The synchronous triggering of the locking assembly and the expansion of the airbag assembly, along with the combined effects of compression friction and physical obstruction, suppresses unhooking. Through the coordinated operation of multi-stage buffer components, locking components, clamping components, ignition components, spare pull components, and the airbag assembly, the system achieves a combination of functions including breakage prevention, maintaining tension after breakage, rebound suppression, and connection reinforcement. This further solves the problems of uncontrollable loss of control after trailer rope breakage, uncontrollable rebound range, and insufficient connection stability after breakage and sway, thus maximizing the safety of the trailer rope. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this application;

[0035] Figure 2 This is a cross-sectional view of this application;

[0036] Figure 3 This is a schematic diagram of the internal structure of the sheath in this application;

[0037] Figure 4 This is a partial structural diagram of this application;

[0038] Figure 5 This is a schematic diagram of a partial connection structure of this application;

[0039] Figure 6 This is a schematic diagram of the structure of the multi-level buffer component in this application;

[0040] Figure 7 This is a schematic diagram of the connection structure between the ignition element and the airbag assembly in this application;

[0041] Figure 8 This is a schematic diagram of the clamping assembly in this application;

[0042] Figure 9 This is a partial structural schematic diagram of the clamping assembly in this application;

[0043] Figure 10 This is a schematic diagram of the locking assembly in this application;

[0044] Figure 11This is a structural schematic diagram of the limiting component in this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Main rope; 2. Sheath; 3. Buffer head; 4. Connector; 5. Hook and loop; 6. Multi-stage buffer assembly; 7. Locking assembly; 8. Tightening assembly; 9. Ignition element; 11. Rope knot; 12. Spare pull piece; 13. Airbag assembly; 121. Spare rope; 122. Welded joint; 31. Air chamber; 32. Ventilation slot; 61. Connecting box; 62. Telescopic rod; 63. Spring 1; 64. Pressure plate; 65. Force transmission plate; 66. Pressure rod 67. Spring II; 68. Ear plate; 69. Abutment rod; 71. Sleeve box; 72. Inner column; 73. Locking arc plate; 74. Spring III; 75. Limiting rod; 76. Limiting component; 77. Pull rope; 761. Torsion spring return shaft; 762. Limiting plate; 763. Flow groove; 81. Mounting box; 82. Drive ring; 83. Limiting block; 84. Pressure block; 85. Tension spring; 91. Inflatable material box; 92. Small igniter. Detailed Implementation

[0047] The following is in conjunction with the appendix Figures 1-11 This application will be described in further detail.

[0048] This application discloses a trailer rope with breakage protection function.

[0049] Reference Figures 1 to 5A trailer rope with breakage protection function includes a main rope 1, with rope end knots 11 at both ends of the main rope 1, and buffer heads 3 at both ends of the main rope 1. Multi-stage buffer components 6 are installed inside the buffer heads 3. The rope end knots 11 and the multi-stage buffer components 6 are closely fitted together. A connector 4 is fixedly connected to the end of the buffer head 3 away from the main rope 1, and a hook 5 is fixedly connected to the upper part of the connector 4. A locking component 7 is fixedly connected to the end of the connector 4 away from the buffer head 3. The multi-stage buffer components 6 and the locking component 7 are connected in a driving connection. Multiple spare pullers 12 are installed at the end of the buffer head 3 near the main rope 1, and a clamping component 8 is installed at the other end of the buffer head 3. The clamping component 8 corresponds to each of the multiple spare pullers 12. The multi-stage buffer components 6 and the clamping component 7 are connected in a driving connection. The pressure components 8 correspond to each other. One end of the buffer head 3 is connected to multiple airbag groups 13. The airbag groups 13 are made of ultra-high molecular weight polyethylene fiber, which has strong wear resistance and high impact strength. When not inflated, they can protect the main rope 1, reduce the external impact and wear on the main rope 1 during operation, and improve the service life of the main rope 1. Ignition components 9 are fixedly connected to both sides of the buffer head 3. The output end of the ignition component 9 is connected to the airbag group 13. The multi-stage buffer components 6 correspond to the ignition components 9. The main rope 1 is covered with a sheath 2. The sheath 2 is made of nylon material and has strong wear resistance. The spare pull component 12 and the airbag group 13 are located between the main rope 1 and the sheath 2. Here, the lengths of the sheath 2, the spare pull component 12, and the airbag group 13 are all greater than the length of the main rope 1.

[0050] When towing, the hooks 5 at both ends can be hooked onto the trailer and the disabled vehicle respectively to install the towing rope. The trailer then uses the towing rope to tow the disabled vehicle, thus completing the towing operation. During this process, the main rope 1 is protected by the cooperation of multiple airbag assemblies 13 and sheaths 2, reducing the risk of scratches or impact damage from external objects and minimizing the possibility of breakage during towing. If the main rope 1 breaks, the spare puller 12 will extend under the action of tensile inertia, taking over the towing work and preventing the trailer from suddenly losing control after the main rope 1 breaks. At the same time, the sheaths 2 can restrain the broken main rope 1 and cushion its rebound force, effectively preventing damage. The system buffers the rebound force, reducing the possibility of excessive rebound force of the main rope 1 causing damage to vehicles or people. During towing operations, the main rope 1 is the primary towing source. As the tensile force increases during towing, the main rope 1 stretches. During stretching, the main rope 1 can drive the rope end knot 11 to compress the multi-stage buffer assembly 6, thereby driving the first buffer component inside the multi-stage buffer assembly 6 to operate. This first buffer component buffers the tensile force on the main rope 1. When the tensile force on the main rope 1 is about to reach its own limit, the rope end knot 11 can continue to compress the multi-stage buffer assembly 6 and the second buffer component inside it, causing it to operate and further buffering the tensile force on the main rope 1. This multi-stage buffering reduces the possibility of the main rope 1 breaking.

[0051] When the main rope 1 drives the second buffer inside the multi-stage buffer assembly 6 to operate, its internal components can move towards the ignition element 9. As the tensile force increases, the internal components of the second buffer trigger the ignition element 9, causing the ignition element 9 to operate. This causes the internal components of the ignition element 9 to quickly generate gas and rapidly inflate multiple airbag groups 13. This rapid expansion of the airbag groups 13 limits the rebound range of the main rope 1. If the main rope 1 breaks, the expanded airbag groups 13 can block and restrict the rebound of the broken main rope 1, thereby working with the sheath 2 to suppress the rebound of the main rope 1.

[0052] When the second buffer inside the multi-stage buffer assembly 6 is in operation, its internal components can simultaneously drive the clamping assembly 8, causing the clamping assembly 8 to operate and thereby clamp and fix the ends of multiple spare pullers 12, improving the connection strength and stability of their ends. Through the synergistic effect of the spare pullers 12 and the clamping assembly 8, it is ensured that when the main rope 1 breaks, the spare pullers 12 immediately bear the tension and the ends do not loosen, reducing the possibility that when the main rope 1 breaks, the spare pullers 12 will suddenly be subjected to tensile force, causing the ends to suddenly be subjected to large stress and become loose or deviated.

[0053] Meanwhile, when the second buffer inside the multi-stage buffer assembly 6 is in operation, it can also drive the locking assembly 7 to operate synchronously. When the second buffer is about to be pulled to its maximum limit, the locking assembly 7 is triggered to release its restriction, causing its internal components to extend and then press against the external tow hook. Together with the hook ring 5, it presses and fixes the external tow hook. When the main rope 1 breaks, its broken end will violently bounce due to elastic potential energy. Through the squeezing friction between the locking assembly 7 and the hook ring 5 and the external tow hook, the frequency and range of swinging caused by the bounce at the hook end can be effectively reduced, preventing the hook ring 5 from disengaging. At the same time, together with the sheath 2 and the inflated airbag group 13, the breakage rebound of the main rope 1 can be suppressed to the maximum extent. Moreover, through the synchronous triggering of the expansion of the locking assembly 7 and the airbag group 13, the disengagement is suppressed by the dual action of squeezing friction and physical blocking, maximizing the safety of the trailer rope.

[0054] Reference Figure 6 The multi-stage buffer assembly 6 includes a connecting box 61 fixedly connected inside the buffer head 3. Multiple telescopic rods 62 are connected through the connecting box 61. One end of each telescopic rod 62 is fixedly connected to a pressure plate 64, and the other end is fixedly connected to a second buffer component. One side of the pressure plate 64 is fitted with the rope knot 11. A spring 63 is sleeved on the telescopic rod 62. Here, the connecting box 61, telescopic rods 62, spring 63, and pressure plate 64 constitute the first buffer component. The first buffer component can buffer the tensile force of the main rope 1. The initial critical load value of spring 63 in the elastic compression stage is half of the ultimate tensile strength that the main rope 1 can withstand during tension. When the main rope 1 is stretched, it can drive the pressure plate 64 to compress the spring 63. As the tensile force increases, it can drive the first spring 63 to compress. The second buffer includes a force transmission plate 65 that is slidably installed inside the buffer head 3. The second spring 67 is fixedly connected to the side of the force transmission plate 65 away from the connecting box 61. Here, the initial critical load value of the second spring 67 in the elastic compression stage is consistent with the ultimate tensile strength value that the main rope 1 can withstand during the tensioning process. Pressure rods 66 are fixedly connected to both sides of the force transmission plate 65, and ear plates 68 are fixedly connected to both sides of the force transmission plate 65. An abutment rod 69 is fixedly connected to one side of the ear plate 68. The pressure rod 66 corresponds to the ignition element 9, and the abutment rod 69 corresponds to the clamping assembly 8. Here, multiple sliding grooves are opened on the buffer head 3, and the pressure rod 66 and ear plate 68 are slidably installed inside the sliding grooves.

[0055] When the trailer rope is used for towing, the main rope 1 is subjected to tensile force, which causes the rope end knot 11 to pull and compress the pressure plate 64. This causes the pressure plate 64 to compress multiple telescopic rods 62, causing the telescopic rods 62 to contract. During this process, the pressure plate 64 simultaneously compresses multiple springs 63. The elasticity of the springs 63 buffers the compressive force, thereby buffering the tensile force on the main rope 1. When the telescopic rods 62 contract to their maximum value, as the tensile force on the main rope 1 continues to increase, the pressure plate 64 can continuously push the telescopic rods 62, which can cause the contracted telescopic rods 62 to press against the force transmission plate 65. The force transmission plate 65 is pushed, which in turn causes the force transmission plate 65 to compress the second spring 67. The elasticity of the second spring 67 provides secondary buffering of the tensile force on the main rope 1, thereby achieving multi-stage buffering of the tensile force on the main rope 1 and providing buffer protection for the main rope 1. In addition, when the force transmission plate 65 is pushed, it can simultaneously drive the pressure rod 66 to move towards the ignition element 9, and drive the ear plate 68 towards the clamping assembly 8, and drive the contact rod 69 to drive the clamping assembly 8. When the pressure rod 66 moves, it can also pull the locking assembly 7, thereby driving the locking assembly 7.

[0056] Reference Figure 7 The ignition component 9 includes an inflatable material box 91 fixedly connected to one side of the buffer head 3. A small igniter 92 is fixedly connected to one end of the inflatable material box 91. The interior of the inflatable material box 91 is filled with sodium azide, and the output end of the small igniter 92 is located inside the inflatable material box 91. The material inside the inflatable material box 91 is ignited by the small igniter 92, so that the material generates gas and quickly inflates the airbag assembly 13. One end of the buffer head 3 is provided with an air chamber 31. A plurality of ventilation slots 32 are connected to one side of the interior of the air chamber 31. The ventilation slots 32 are connected to the airbag assembly 13, and an air inlet is provided on one side of the buffer head 3. One side of the inflatable material box 91 is connected to the air inlet.

[0057] When the pressure rod 66 moves toward the ignition element 9, it can contact the small igniter 92, triggering it and igniting the inside of the inflatable material box 91. This causes the sodium azide filling the box to heat up and generate gas, which enters the air chamber 31 and is then sent into the multiple airbag groups 13 through multiple ventilation slots 32. This causes the multiple airbag groups 13 to quickly inflate and expand, thus limiting the rebound range of the main rope 1. If the main rope 1 breaks, the inflated airbag groups 13 can block and restrict the rebound of the broken main rope 1, thereby working with the sheath 2 to suppress the rebound of the main rope 1.

[0058] Reference Figure 8 and Figure 9The buffer head 3 has multiple mounting cavities inside one end. The spare puller 12 includes a weld joint 122 installed inside the mounting cavity. A spare rope 121 is fixedly connected to one end of the weld joint 122. Here, the length of the spare rope 121 is greater than the length of the main rope 1. When the main rope 1 breaks, the spare rope 121 can extend under inertia and replace the main rope 1 to perform the dragging work. The clamping assembly 8 includes multiple mounting boxes 81 fixedly connected to the outside of the buffer head 3. A limit block 83 is slidably connected to one side of the inside of the mounting box 81. A drive ring 82 is fixedly connected to one end of the limit block 83. A pressure member is slidably connected inside the mounting box 81. The drive ring 82 and the pressure member are connected to each other. The parts fit together and abut. Here, the drive ring 82 is inclined on the side near the pressure part and fits well with the structure of the pressure part. The pressure part includes a pressure block 84 that is slidably installed inside the mounting box 81. The top two ends of the pressure block 84 are provided with inclined slopes, and the top of the pressure block 84 is fixedly connected with mutually symmetrical tension springs 85. One end of the tension spring 85 is fixedly connected to the top of the mounting box 81. Here, the pressure block 84 is slidably connected with the buffer head 3, and the outer surface of the pressure block 84 is smoothed to reduce the friction of the pressure block 84 when it moves and improve the smoothness of the movement of the pressure block 84. When the drive ring 82 moves, it abuts against the inclined slope of the pressure block 84 and squeezes and pushes the pressure block 84.

[0059] When the ear plate 68 moves the abutment rod 69 toward the clamping assembly 8, one end of the abutment rod 69 moves against the drive ring 82, causing the drive ring 82 to move the limiting block 83 inside the mounting box 81. This causes the drive ring 82 to abut against the inclined slope of the pressure block 84 and press the pressure block 84, causing the pressure block 84 to slide toward the weld joint 122, thereby squeezing and fixing the weld joint 122. This enhances the connection strength and stability of the end of the spare pull member 12. Through the synergistic effect of the spare pull member 12 and the clamping assembly 8, it is ensured that the spare member immediately bears the tension when the main rope 1 breaks and the end does not loosen. This reduces the possibility that the spare pull member 12 will suddenly be subjected to tensile force when the main rope 1 breaks, causing the end to suddenly be subjected to large stress and become loose or deviated. In addition, when the abutment rod 69 stops pushing against the drive ring 82, the pressure block 84 can be pulled back to its original position by the elastic action of the tension spring 85, thereby resetting the pressure block 84.

[0060] Reference Figure 10 and Figure 11The locking assembly 7 includes a sleeve 71 fixedly connected to one end of the connector 4. An inner post 72 is slidably connected inside the sleeve 71, and a spring 74 is fixedly connected to one side of the inside of the sleeve 71. The spring 74 is fixedly connected to one end of the inner post 72. A locking arc plate 73 is fixedly connected to the end of the inner post 72 away from the spring 74. Limiting rods 75 are fixedly connected to both sides of the inner post 72. Limiting elements 76 are installed on both sides of the connector 4. A pull rope 77 is installed on the limiting element 76, and one end of the pull rope 77 is fixedly connected to the pressure rod 66. Here, the locking arc plate 73 has an arc-shaped structure on the side near the hook ring 5, and the inner side of the arc is coated with a rubber anti-slip coating. When plate 73 extends, it can enhance the friction between locking arc plate 73 and external tow hook. Limiting member 76 is installed on torsion spring return shaft 761 on one side of connector 4. Limiting plate 762 is fixedly connected to torsion spring return shaft 761, and a winding reel is fixedly connected to one end of torsion spring return shaft 761. One end of pressure rod 66 is wound on winding reel. A flow groove 763 is opened on one side of limiting plate 762. Limiting rod 75 is slidably installed inside limiting plate 762. Here, torsion spring is provided inside torsion spring return shaft 761. Under the elastic action of torsion spring, the rotation and reset of limiting member 76 can be realized. The diameter of flow groove 763 is larger than the size of limiting rod 75.

[0061] As the pressure rod 66 moves toward the ignition element 9, the pull rope 77 is simultaneously pulled, causing the pull rope 77 to pull the winding reel. This causes the winding reel to rotate the torsion spring reset shaft 761 and the limiting plate 762, allowing the limiting rod 75 to slide inside the limiting plate 762. When the pressure rod 66 triggers the ignition element 9, the flow groove 763 rotates to the position corresponding to the limiting rod 75, releasing the restriction on the limiting rod 75. Under the elastic action of the spring 74, the inner column 72 is pushed up, thereby causing the locking arc plate 73 to collide and press against the external towing hook, and cooperating with the hook ring 5 to pull the external towing mechanism. By restricting and increasing the friction between the three components, when the main rope 1 breaks, its broken end will violently bounce due to elastic potential energy. The squeezing friction generated between the locking component 7 and the hook 5 and the external tow hook can effectively reduce the frequency and range of swinging caused by the bounce at the hook end, preventing the hook 5 from disengaging. At the same time, in conjunction with the sheath 2 and the inflated airbag group 13, the breakage rebound of the main rope 1 can be suppressed to the maximum extent. Furthermore, the synchronous triggering of the expansion of the locking component 7 and the airbag group 13 suppresses disengagement through the dual effects of squeezing friction and physical blocking, thereby maximizing the safety of the tow rope.

[0062] Working principle: As the core force-bearing component, the main rope 1's safety protection begins with the graded protection of the multi-level buffer assembly 6. When the main rope 1 is stretched by tensile force, the first buffer inside the multi-level buffer assembly 6 intervenes first, dispersing the initial tension through elastic deformation. As the tension continues to increase to near the load limit, the second buffer initiates secondary force relief. The double buffering improves the tensile strength of the main rope 1, reducing the probability of breakage from the source and achieving progressive force relief. This allows the protection force to be dynamically matched with the force intensity, buying time for subsequent safety mechanisms to respond.

[0063] Once the main rope 1 breaks, the backup pull member 12 immediately takes over the towing force to prevent the trailer from losing control due to sudden loss of power. During this process, the clamping component 8, triggered when the second buffer inside the multi-stage buffer assembly 6 is pulled to its limit, operates synchronously. It strengthens the end connection of the backup pull member 12 through mechanical compression, so that each backup pull member 12 is subjected to uniform force, preventing gradual breakage caused by stress concentration. The seamless connection between the main rope 1 and the backup pull member 12, together with the dynamic locking of the clamping mechanism, forms the first safety barrier at the moment of breakage.

[0064] The rebound suppression after the main rope 1 breaks is achieved by the synergistic effect of the sheath 2 and multiple airbag groups 13. The sheath 2 guides the main rope 1 to retract and buffer part of the elastic force through the toughness of the material. The built-in high wear-resistant and high elasticity airbag group 13 is rapidly inflated by the ignition element 9 when the second buffer in the multi-level buffer component 6 reaches its limit. It expands in the sheath 2 to form an elastic barrier, realizing pre-inflation before breakage and compressing the rebound range of the main rope 1. The double blocking of the inflated airbag group 13 and the sheath 2 solves the problem of unrestrained swinging after the traditional trailer rope breaks.

[0065] The stability of the connection with the external tow hook is jointly ensured by the locking component 7 and the hook ring 5. When the second buffer in the multi-level buffer component 6 approaches the maximum tensile amount, its internal components pull the locking component 7 and release the restriction of the locking component 7, allowing its internal components to extend and compress the external tow hook. The friction generated by the hook ring 5 greatly reduces the end swing frequency, forming a dynamic compression anti-detachment mechanism, improving the connection reliability when the main rope 1 breaks and causes violent swaying, and forming a three-dimensional protection with the airbag group 13 and the sheath 2.

Claims

1. A trailer rope with breakage protection function, comprising a main rope (1), characterized in that: Both ends of the main rope (1) are wrapped with rope end knots (11), and both ends of the main rope (1) are provided with buffer heads (3). The buffer heads (3) are equipped with multi-level buffer components (6). The rope end knots (11) and the multi-level buffer components (6) are closely fitted together. The end of the buffer head (3) away from the main rope (1) is fixedly connected to a connector (4). The upper part of the connector (4) is fixedly connected to a hook (5), and the end of the connector (4) away from the buffer head (3) is fixedly connected to a locking component (7). The multi-level buffer components (6) and the locking component (7) are connected in a transmission manner. The end of the buffer head (3) near the main rope (1) is equipped with multiple spares. The pull member (12) and the buffer head (3) are equipped with a clamping component (8) at one end. The clamping component (8) corresponds to a plurality of spare pull members (12). The multi-stage buffer component (6) corresponds to the clamping component (8). A plurality of airbag groups (13) are connected to one end of the buffer head (3). Ignition components (9) are fixedly connected to both sides of the buffer head (3). The output end of the ignition component (9) is connected to the airbag group (13). The multi-stage buffer component (6) corresponds to the ignition component (9). A sheath (2) is fitted on the main rope (1). The spare pull members (12) and the airbag group (13) are located between the main rope (1) and the sheath (2).

2. The trailer rope with breakage protection function according to claim 1, characterized in that: The multi-stage buffer assembly (6) includes a connecting box (61) fixedly connected inside the buffer head (3). Multiple telescopic rods (62) are connected through the connecting box (61). One end of the telescopic rod (62) is fixedly connected to a pressure plate (64), and the other end of the telescopic rod (62) is fixedly connected to a second buffer component. One side of the pressure plate (64) is in contact with the rope knot (11), and a spring (63) is sleeved on the telescopic rod (62).

3. A trailer rope with breakage protection function according to claim 2, characterized in that: The second buffer includes a force transmission plate (65) that is slidably installed inside the buffer head (3), and a spring (67) is fixedly connected to the side of the force transmission plate (65) away from the connecting box (61).

4. A trailer rope with breakage protection function according to claim 3, characterized in that: Both sides of the force transmission plate (65) are fixedly connected with pressure rods (66), and both sides of the force transmission plate (65) are fixedly connected with ear plates (68). One side of the ear plate (68) is fixedly connected with an abutment rod (69). The pressure rod (66) corresponds to the ignition element (9), and the abutment rod (69) corresponds to the pressing assembly (8).

5. A trailer rope with breakage protection function according to claim 1, characterized in that: The ignition component (9) includes an inflatable material box (91) fixedly connected to one side of the buffer head (3). A small igniter (92) is fixedly connected to one end of the inflatable material box (91). An air chamber (31) is opened at one end of the buffer head (3). A plurality of ventilation slots (32) are connected to one side of the interior of the air chamber (31). The ventilation slots (32) are connected to the airbag assembly (13). An air inlet is opened on one side of the buffer head (3). One side of the inflatable material box (91) is connected to the air inlet.

6. A trailer rope with breakage protection function according to claim 1, characterized in that: The buffer head (3) has multiple mounting cavities inside one end. The spare puller (12) includes a weld joint (122) installed inside the mounting cavity. One end of the weld joint (122) is fixedly connected to a spare rope (121).

7. A trailer rope with breakage protection function according to claim 1, characterized in that: The clamping assembly (8) includes multiple mounting boxes (81) fixedly connected to the outside of the buffer head (3). A limiting block (83) is slidably connected to one side of the inside of the mounting box (81). A driving ring (82) is fixedly connected to one end of the limiting block (83). A pressure member is slidably connected inside the mounting box (81). The driving ring (82) is in contact with the pressure member.

8. A trailer rope with breakage protection function according to claim 7, characterized in that: The pressure component includes a pressure block (84) that is slidably installed inside the mounting box (81). The top two ends of the pressure block (84) are provided with inclined slopes, and the top of the pressure block (84) is fixedly connected with mutually symmetrical tension springs (85). One end of the tension spring (85) is fixedly connected to the top of the mounting box (81).

9. A trailer rope with breakage protection function according to claim 4, characterized in that: The locking assembly (7) includes a sleeve (71) fixedly connected to one end of the connector (4). An inner column (72) is slidably connected inside the sleeve (71), and a spring three (74) is fixedly connected to one side of the inside of the sleeve (71). The spring three (74) is fixedly connected to one end of the inner column (72). A locking arc plate (73) is fixedly connected to the end of the inner column (72) away from the spring three (74). Limit rods (75) are fixedly connected to both sides of the inner column (72). Limiting parts (76) are installed on both sides of the connector (4). A pull rope (77) is installed on the limiting part (76). One end of the pull rope (77) is fixedly connected to the pressure rod (66).

10. A trailer rope with breakage protection function according to claim 9, characterized in that: The limiting member (76) is installed on the torsion spring reset shaft (761) on one side of the connector (4). The torsion spring reset shaft (761) is fixedly connected to the limiting plate (762), and a winding reel is fixedly connected to one end of the torsion spring reset shaft (761). One end of the pressure rod (66) is wound on the winding reel. A flow groove (763) is opened on one side of the limiting plate (762), and the limiting rod (75) is slidably installed inside the limiting plate (762).

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