A kind of anti-falling wire rope device for garbage unloading platform vehicle

Abstract

The application discloses a kind of for garbage unloading platform vehicle anti-falling wire rope devices, belong to safety protection technical field, including unloading platform, anti-falling anchor ring assembly, main traction unit, multiple groups of auxiliary traction unit and composite locking node;Anti-falling anchor ring assembly is embedded in the floor of unloading platform, the first end of main traction unit is connected with anchor ring assembly by connecting piece, composite locking node is arranged along the axial direction of main traction unit, and each group of composite locking node is connected with a group of auxiliary traction unit;Composite locking node includes the interlocking section of the insertion of auxiliary rope and main rope, and the aluminum alloy compression sleeve pipe that is set to the outside of insertion section and is formed by cold pressing, and the anti-falling hook is provided at the end of auxiliary traction unit.The application does not need secondary opening, does not damage platform structure, and multiple auxiliary ropes with different lengths can be flexibly expanded through composite node, which meets the anti-falling requirements of all vehicle types, and has the advantages of high connection strength, good anti-slip performance, convenient installation and maintenance, and high safety redundancy.

Description

Technical Field

[0001] This invention relates to the field of safety protection technology, and in particular to a steel wire rope device for preventing vehicles from falling off garbage unloading platforms. Background Technology

[0002] In the production process of a waste-to-energy plant, garbage trucks need to drive to the unloading platform to dump the garbage from their compartments into the garbage storage pit below the unloading port. During the unloading process, the center of gravity shifts backward after the compartment is lifted. If the garbage sticks together, the unloading speed is too fast, or the operation is improper, the vehicle is prone to nose-lifting, instability, overturning, or even falling into the storage pit, causing serious injuries and equipment damage.

[0003] Existing vehicle fall prevention solutions for garbage unloading platforms mainly fall into two categories: The first category is a single steel wire rope or single chain traction solution, which connects to the vehicle only through a single traction rope. This solution is only compatible with garbage trucks of a single length and cannot be used for different models with different wheelbases. When the vehicle model and the traction rope length do not match, an excessively long traction rope will cause lag in the fall prevention braking, while an excessively short rope will not be able to complete the engagement, failing to achieve a stable and effective fall prevention effect. The second category is a steel structure swing arm fall prevention solution, which requires secondary drilling in the floor slab on one side of the unloading port to install a steel structure frame and a swing arm mechanism. Although it can adapt to the fall prevention requirements of different vehicle lengths, the secondary drilling will cut the original structural steel bars of the floor slab, reducing the load-bearing capacity of the floor slab. At the same time, the drilled holes are prone to leachate leakage, polluting the surrounding environment. Furthermore, the installation cost of the steel structure swing arm is high, and subsequent maintenance and replacement are complex, resulting in high operation and maintenance costs.

[0004] In addition, existing wire rope branch connection solutions mostly adopt U-shaped rope clamps, welding, and ordinary T-shaped sleeve crimping. Among them, the connection strength of U-shaped rope clamps is only 30%-50% of the breaking tensile strength of the wire rope, and it is easy to loosen and slip under dynamic load, resulting in low safety redundancy; welding will damage the metallographic structure of the wire rope, leading to increased rope brittleness, a significant decrease in strength, and a significant shortening of fatigue life; ordinary T-shaped sleeve crimping relies only on the frictional force of sleeve compression for fixation, without a mechanical interlocking structure, and is prone to slippage and loosening under impact load. It can only achieve the connection of a single auxiliary rope and cannot flexibly expand multiple auxiliary ropes to adapt to the needs of multiple vehicle models. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a steel wire rope device for preventing falling of garbage unloading platform vehicles, so as to solve the problems of low adaptability, low strength and poor anti-slip ability.

[0006] A steel wire rope device for preventing fall of garbage unloading platform vehicles includes an unloading platform, a fall prevention anchor ring assembly, a main traction unit, multiple sets of auxiliary traction units, and at least two sets of composite locking nodes. The anti-fall anchor ring assembly is pre-embedded and fixed in the floor slab on the side of the unloading port of the unloading platform, and the first end of the main traction unit is detachably connected to the anti-fall anchor ring assembly through a connector. The composite locking nodes are spaced apart along the axial direction of the main traction unit on the rope of the main traction unit, and each set of composite locking nodes is connected to a set of auxiliary traction units. The composite locking node includes a braided interlocking section and an aluminum alloy press-fit sleeve. The braided interlocking section is a mechanical interlocking structure formed by inserting the end strands of the auxiliary traction unit into the gap between the strands of the main traction unit. The aluminum alloy press-fit sleeve is sleeved on the complete outer side of the braided interlocking section. The aluminum alloy press-fit sleeve is radially cold-pressed and is interference-fitted with the main traction unit and the auxiliary traction unit to form a wrap-around composite locking structure. Each of the auxiliary traction units is equipped with an anti-fall hook at its end, which is used to engage with the traction part of the garbage truck.

[0007] In this invention, the anti-fall anchor ring assembly includes at least one set of anti-fall round steel anchor rings. The anti-fall round steel anchor rings are closed ring structures, with the lower half embedded in the concrete floor slab of the unloading platform and the upper half exposed on the floor slab surface. The connector is an arc-shaped shackle, and the front end of the main traction unit is detachably connected to the anti-fall round steel anchor ring via the arc-shaped shackle.

[0008] In this invention, the main traction unit is a main steel wire rope, and an aluminum alloy pressed joint is fixed at the beginning of the main steel wire rope. The aluminum alloy pressed joint is provided with a connecting hole, and the bow-shaped shackle is inserted into the connecting hole to realize the connection between the main steel wire rope and the anti-fall round steel anchor ring.

[0009] Furthermore, the auxiliary traction unit is an auxiliary wire rope, and the nominal diameter of the auxiliary wire rope is less than or equal to 70% of the nominal diameter of the main wire rope; In the interlocking section, the single strand of the auxiliary wire rope alternately inserts into the gaps between adjacent strands of the main wire rope in a three-in-three-out manner, and the axial length of the interlocking section is greater than or equal to 10 times the nominal diameter of the auxiliary wire rope.

[0010] Furthermore, the interlocking section does not cut the steel core or fiber core of the main wire rope, and the number of auxiliary wire rope strands inserted in the same cross section of the main wire rope is less than or equal to 1 / 2 of the total number of main wire rope strands.

[0011] In this invention, the inner wall of the aluminum alloy crimp sleeve is provided with an annular anti-slip groove, and the two ends of the aluminum alloy crimp sleeve extend beyond the two ends of the interlocking section by a length greater than or equal to 5mm; the two ends of the aluminum alloy crimp sleeve are provided with tapered openings, and a sealing and anti-corrosion layer is filled between the tapered openings and the outer walls of the main wire rope and the auxiliary wire rope.

[0012] In this invention, multiple sets of composite locking nodes are arranged at equal or unequal intervals along the axial direction of the main wire rope, and the axial distance between two adjacent sets of composite locking nodes is greater than or equal to a multiple of the nominal diameter of the main wire rope; the lengths of multiple sets of auxiliary wire ropes are different, which are used to adapt to the anti-fall traction of garbage trucks of different lengths.

[0013] In this invention, the fall arresting hook is a safety hook with a self-locking tongue, and the fall arresting hook is fixedly connected to the end of the auxiliary steel wire rope through an aluminum alloy pressed joint.

[0014] In this invention, the end of the main wire rope is provided with a limiting cap, which is an aluminum alloy cold-pressed cap or a hot-cast cap.

[0015] The beneficial effects of this invention are: This invention utilizes a structural design that combines a main steel wire rope with multiple sets of auxiliary steel wire ropes of varying lengths. This allows it to be adapted to various mainstream garbage trucks with short, medium, and long wheelbases without adjusting the traction rope length, solving the problems of poor versatility, delayed braking, or inability to attach in traditional single-rope solutions. It employs pre-embedded anti-fall anchor ring components, installed simultaneously during the concrete pouring stage of the floor slab, avoiding the defects of steel structure swing arm solutions that require secondary drilling to prevent damage to the floor slab structure and leachate leakage. This also significantly reduces installation and maintenance costs. The innovative composite locking node, combining interlocking and aluminum alloy pressing, provides reliable anti-slip capability through mechanical interlocking and further enhances connection strength through wrapping pressing. The overall breaking tensile strength of the node can reach over 87% of the nominal breaking tensile strength of the main rope, and the anti-slip load of a single auxiliary rope can reach over 92% of the nominal breaking tensile strength of the auxiliary rope. This is significantly superior to traditional connection methods such as U-shaped rope clamps, welding, and ordinary pressing, and exhibits excellent dynamic fatigue performance and high safety redundancy, effectively ensuring the operational safety of the garbage unloading platform. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall installation structure of the anti-fall wire rope device in this embodiment; The attached diagram is labeled as follows: 1-unloading platform, 2-anti-fall round steel anchor ring, 3-bow shackle, 4-aluminum alloy pressed joint, 5-main steel wire rope, 6-composite locking node, 7-secondary steel wire rope, 8-anti-fall hook. Detailed Implementation

[0017] This invention provides a steel wire rope device for preventing vehicles from falling off garbage unloading platforms. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention is 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 for explaining the invention and are not intended to limit the invention.

[0018] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limiting this invention.

[0019] Please see Figure 1 : This embodiment discloses a steel wire rope device for preventing falls from garbage unloading platform vehicles, including an unloading platform 1, a fall-prevention anchor ring assembly, a main traction unit, multiple sets of auxiliary traction units, and multiple sets of composite locking nodes 6. The fall-prevention anchor ring assembly is made of round steel bent into a closed ring structure. Its lower half is embedded in the concrete floor slab on the unloading port side of the unloading platform 1, while its upper half is exposed on the floor slab surface. The embedding depth meets the anchoring strength requirements.

[0020] Furthermore, the main traction unit is a main steel wire rope 5, which is a commonly used galvanized steel wire rope. The first end of the main steel wire rope 5 is fixed with an aluminum alloy pressed joint 4. The joint has a connecting hole in the center. An arc-shaped shackle 3 is inserted between the connecting hole and the anti-fall round steel anchor ring 2 to realize the detachable connection between the main steel wire rope 5 and the anti-fall round steel anchor ring 2.

[0021] Furthermore, multiple sets of composite locking nodes 6 are spaced apart along the length of the main wire rope 5, and each corresponds to multiple sets of auxiliary traction units. Each set of composite locking nodes 6 includes a braided interlocking section and an aluminum alloy crimped sleeve. The braided interlocking section is a mechanical interlocking structure formed by the end strands of the auxiliary traction unit inserting into the gaps between the strands of the main wire rope 5. The aluminum alloy crimped sleeve is fitted onto the complete outer side of the braided interlocking section and is radially cold-pressed to form an interference fit with the main wire rope 5 and the auxiliary traction unit, thus forming a wrap-around composite locking structure.

[0022] Furthermore, the auxiliary traction unit is an auxiliary steel wire rope 7. Multiple sets of auxiliary steel wire ropes 7 have different lengths, which are adapted to garbage trucks with short wheelbase, medium wheelbase, and long wheelbase respectively, covering the vehicle length requirements of mainstream garbage transfer trucks and compactor trucks on the market.

[0023] Furthermore, the specific structure of the interlocking section is as follows: the end of the auxiliary wire rope 7 is disassembled into a single strand, and it is alternately inserted into the gap between adjacent strands of the main wire rope 5 in a three-in-three-out manner without cutting off the internal core of the main wire rope 5. The number of auxiliary strands inserted in the same cross section of the main wire rope 5 does not exceed 1 / 2 of the total number of main strands. After the interlocking is completed, a tensioner is used for pre-tensioning to eliminate the gap between the ropes and form a stable mechanical interlocking structure.

[0024] In this embodiment, the aluminum alloy crimping sleeve is made of pure aluminum. The inner wall of the sleeve is provided with an annular anti-slip groove. After the sleeve is installed, both ends extend beyond the edges of the interlocking section. It is formed by multiple continuous crimping processes using a crimping machine and corresponding mold, forming an interference fit with the main wire rope 5 and the auxiliary wire rope 7. After crimping, the two ends of the sleeve are tapered and filled with special anti-corrosion lubricant and sealant for wire ropes to form a sealed anti-corrosion layer, preventing moisture and dust from entering and causing the rope to rust.

[0025] Furthermore, each set of auxiliary wire ropes 7 is fixed with a fall arrest hook 8 at its end. The fall arrest hook 8 is a safety hook with a self-locking tongue, which is fixedly connected to the end of the auxiliary wire rope 7 through an aluminum alloy pressed joint to ensure the connection strength. The end of the main wire rope 5 is provided with an aluminum alloy cold-pressed limit cap to prevent the rope from unraveling.

[0026] This embodiment also provides a method for preparing and installing the device, the specific steps of which are as follows: S1 Anchor Ring Embedding: During the concrete pouring stage of the unloading platform 1 floor slab, two sets of anti-fall round steel anchor rings 2 are pre-embedded and fixed in parallel according to the design position to ensure that the lower half of the anchor ring is welded and fixed to the floor slab reinforcement, and the exposed height of the upper half meets the design requirements. When pouring concrete, protect the exposed section of the anchor ring to avoid concrete contamination. S2 Main Rope Pretreatment: Cut the main steel wire rope 5 to the designed length, and perform stranding, cleaning and sealing treatment on the first end. Then, install a pure aluminum sleeve and cold press it with a crimping machine to obtain the main steel wire rope 5 with aluminum alloy pressed joint 4. S3 Pre-fixing by Insertion: At the design markings on the main wire rope 5, the strands are combed to ensure uniform spacing. The ends of the auxiliary wire rope 7 are disassembled into single strands, with each strand's end sealed to prevent fraying. The single strands are alternately inserted into the gaps between adjacent strands of the main wire rope 5 using a three-in, three-out method. After full insertion, a tensioner is used to apply pre-tension to the auxiliary wire rope 7, eliminating gaps and forming an interlocking section. The same process is used to complete the pre-fixing of the other two sets of auxiliary wire ropes 7. S4 Composite Node Pressing: The aluminum alloy press sleeve is pre-inserted into the main steel wire rope 5 and moved to the position that completely covers the corresponding interlocking section. Using a press mold that matches the sleeve specifications, it is continuously pressed in multiple passes along the sleeve axis. After pressing, the burrs on the sleeve surface are removed, and the two ends are tapered and closed. Anti-corrosion lubricant and sealant are filled to complete the fabrication of the composite locking node 6. S5 end assembly: Aluminum alloy sleeves and anti-fall hooks 8 are respectively installed on the ends of the three sets of auxiliary steel wire ropes 7, and fixed by cold pressing. Limiting end caps are pressed onto the ends of the main steel wire ropes 5 to complete the overall assembly of the device. S6 On-site installation: Connect and fix the aluminum alloy pressed joint 4 at the head of the main steel wire rope 5 to the pre-embedded anti-fall round steel anchor ring 2 through the bow-shaped shackle 3 to complete the overall installation. After the installation is completed, perform a pre-tension test on each node to ensure that there is no slippage or loosening before it can be put into use.

[0027] Performance testing showed that the anti-fall wire rope device prepared in this embodiment achieved an overall breaking tensile force of over 87% of the nominal breaking tensile force of the main rope at the composite locking node, and an anti-slip load of over 92% of the nominal breaking tensile force of the auxiliary rope at the single auxiliary rope, fully meeting the load requirements for anti-fall of garbage unloading platform vehicles. After multiple dynamic load fatigue cycles, the nodes showed no slippage or cracks, and the rope body showed no broken wires, demonstrating stable performance.

[0028] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. A steel wire rope device for preventing vehicles from falling off garbage unloading platforms, characterized in that, It includes an unloading platform, anti-fall anchor ring assembly, main traction unit, multiple sets of auxiliary traction units, and at least two sets of composite locking nodes; The anti-fall anchor ring assembly is pre-embedded and fixed in the floor slab on the side of the unloading port of the unloading platform, and the first end of the main traction unit is detachably connected to the anti-fall anchor ring assembly through a connector. The composite locking nodes are spaced apart along the axial direction of the main traction unit on the rope of the main traction unit, and each set of composite locking nodes is connected to a set of auxiliary traction units. The composite locking node includes a braided interlocking section and an aluminum alloy press-fit sleeve. The braided interlocking section is a mechanical interlocking structure formed by inserting the end strands of the auxiliary traction unit into the gap between the strands of the main traction unit. The aluminum alloy press-fit sleeve is sleeved on the complete outer side of the braided interlocking section. The aluminum alloy press-fit sleeve is radially cold-pressed and is interference-fitted with the main traction unit and the auxiliary traction unit to form a wrap-around composite locking structure. Each of the auxiliary traction units is equipped with an anti-fall hook at its end, which is used to engage with the traction part of the garbage truck. The main traction unit is the main wire rope, and the auxiliary traction unit is the auxiliary wire rope. In the interlocking section, the single strand of the auxiliary wire rope alternately inserts into the gaps between adjacent strands of the main wire rope in a three-in-three-out manner. The interlocking section does not cut off the steel core or fiber core of the main wire rope.

2. The anti-fall steel wire rope device for garbage unloading platform vehicles according to claim 1, characterized in that, The anti-fall anchor ring assembly includes at least one set of anti-fall round steel anchor rings. The anti-fall round steel anchor rings are closed ring structures, with the lower half embedded in the concrete floor slab of the unloading platform and the upper half exposed on the floor slab surface. The connector is an arc-shaped shackle, and the front end of the main traction unit is detachably connected to the anti-fall round steel anchor ring via the arc-shaped shackle.

3. The anti-fall wire rope device for garbage unloading platform vehicles according to claim 2, characterized in that, The first end of the main steel wire rope is fixed with an aluminum alloy pressed joint. The aluminum alloy pressed joint is provided with a connection hole. The bow-shaped shackle is inserted into the connection hole to realize the connection between the main steel wire rope and the anti-fall round steel anchor ring.

4. The anti-fall steel wire rope device for garbage unloading platform vehicles according to claim 3, characterized in that, The nominal diameter of the auxiliary wire rope is less than or equal to 70% of the nominal diameter of the main wire rope; In the interlocking section, the single strand of the auxiliary wire rope alternately inserts into the gaps between adjacent strands of the main wire rope in a three-in-three-out manner, and the axial length of the interlocking section is greater than or equal to 10 times the nominal diameter of the auxiliary wire rope.

5. The anti-fall steel wire rope device for garbage unloading platform vehicles according to claim 4, characterized in that, The number of secondary wire rope strands interspersed within the same cross section of the main wire rope is less than or equal to 1 / 2 of the total number of strands of the main wire rope.

6. The anti-fall wire rope device for garbage unloading platform vehicles according to claim 1, characterized in that, The inner wall of the aluminum alloy crimp sleeve is provided with an annular anti-slip groove. The two ends of the aluminum alloy crimp sleeve extend beyond the two ends of the interlocking section by a length greater than or equal to 5mm. The two ends of the aluminum alloy crimp sleeve are provided with tapered ends. A sealing and anti-corrosion layer is filled between the tapered ends and the outer walls of the main wire rope and the auxiliary wire rope.

7. The anti-fall wire rope device for garbage unloading platform vehicles according to claim 1, characterized in that, Multiple sets of composite locking nodes are arranged at equal or unequal intervals along the axial direction of the main wire rope, and the axial distance between two adjacent sets of composite locking nodes is greater than or equal to 5 times the nominal diameter of the main wire rope; multiple sets of auxiliary wire ropes have different lengths to adapt to the anti-fall traction of garbage trucks of different lengths.

8. The anti-fall wire rope device for garbage unloading platform vehicles according to claim 1, characterized in that, The fall arrestor hook is a safety hook with a self-locking tongue, and the fall arrestor hook is fixedly connected to the end of the auxiliary steel wire rope through an aluminum alloy pressed joint.

9. The anti-fall wire rope device for garbage unloading platform vehicles according to claim 1, characterized in that, The end of the main steel wire rope is provided with a limiting cap, which is an aluminum alloy cold-pressed cap or a hot-cast cap.

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