Anti-collision device

Abstract

The utility model discloses an anti-collision device which comprises an anti-collision block body and an anti-collision mechanism, the anti-collision mechanism is arranged on the anti-collision block body, the anti-collision mechanism comprises a nylon sliding block embedded in the anti-collision block body, one side face of the nylon sliding block protrudes out of the anti-collision block body, and the other side face of the nylon sliding block is flush with the anti-collision block body. According to the anti-collision device, the nylon sliding block is arranged in the anti-collision block body, so that impact force caused by left-right swing due to inertia in the running process of the cross-country type telescopic arm is effectively absorbed, direct rigid contact between the arm body and a frame is reduced, the risk of structural damage is reduced, the impact resistance of the whole structure is improved, and the service life of the whole structure is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery structure design technical field, concretely relates to a crashproof device. BACKGROUND

[0002] In the existing engineering machinery equipment, off-road telescopic arm is widely used in hoisting, loading and unloading and high-altitude operation and a variety of complex environments. The telescopic arm is usually installed on the vehicle chassis and realizes the telescopic movement of the multi-section arm body through the hydraulic system to meet different operation requirements. Because it is suitable for rugged, complex terrain off-road scenes, the whole vehicle is often accompanied by violent bumping and vibration during operation.

[0003] Under the running state of the telescopic arm, the arm body may swing in the left and right directions under the influence of gravity and inertia. Especially in high-speed telescopic or whole vehicle acceleration, deceleration, turning and other dynamic conditions, the swinging phenomenon is more obvious. Once the swing amplitude is large, the arm body may collide with the vehicle frame, causing structural wear and even impact damage. After a long time of operation, frequent collisions can cause permanent deformation of the local structure of the telescopic arm body, thereby affecting the telescopic precision, carrying capacity and service life. In addition, structural deformation may also affect the coaxiality of the hydraulic system, increase the equipment failure rate and reduce the overall operation safety. SUMMARY

[0004] The utility model aims at providing a crashproof device, which effectively limits or relieves the lateral swinging of the telescopic arm during operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a crashproof device, comprising:

[0006] A crash block body;

[0007] A crashproof mechanism is arranged on the crash block body, and the crashproof mechanism comprises a nylon slider embedded in the interior of the crash block body, one side of the nylon slider protrudes from the crash block body, and the other side of the nylon slider is flush with the crash block body.

[0008] Preferably, the nylon slider is detachably arranged on the crash block body.

[0009] Preferably, a cylindrical pin is arranged on the crash block body, and the nylon slider is connected to the crash block body through the cylindrical pin.

[0010] Preferably, the nylon slider is made of nylon material.

[0011] Preferably, the side of the nylon slider protruding from the crash block body exceeds the crash block body by mm-mm.

[0012] Preferably, a buffer pad is provided between the anti-collision block body and the nylon slider.

[0013] Preferably, the cylindrical pin is a resilient pin.

[0014] Preferably, the outer surface of the nylon slider is provided with an arc-shaped guide surface.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0016] This anti-collision device, by incorporating a nylon slider within the anti-collision block body, effectively absorbs the impact force caused by the lateral swaying of the off-road telescopic boom during operation. This reduces direct hard contact between the boom and the frame, lowers the risk of structural damage, and enhances the overall impact resistance and service life of the structure. One side of the nylon slider protrudes from the anti-collision block body, helping it to contact the boom before a collision, thus providing prevention and cushioning. The other side of the nylon slider is flush with the anti-collision block body, facilitating embedded installation and improving assembly stability. The nylon slider features a detachable structure, facilitating future replacement and maintenance, and reducing repair costs. A flexible pin connection structure improves the slider's fixing reliability and ease of assembly and disassembly. The arc-shaped guide surface on the outer surface of the slider further guides the contact direction between the boom and the anti-collision device, reducing the impact angle and improving cushioning efficiency. The overall structure is simple, easy to install, and suitable for use in various complex off-road conditions. It effectively avoids structural deformation, wear, or hydraulic system abnormalities caused by boom collisions, improving the operational reliability and safety of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model installed on the frame and telescopic arm;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0019] In the diagram: 1. Anti-collision block body; 2. Anti-collision mechanism; 21. Nylon slider; 3. Cylindrical pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 and Figure 2As shown, this utility model provides a technical solution: an anti-collision device, including an anti-collision block body 1; an anti-collision mechanism 2, which is disposed on the anti-collision block body 1. The anti-collision mechanism 2 includes a nylon slider 21 embedded inside the anti-collision block body 1. One side of the nylon slider 21 protrudes from the anti-collision block body 1, and the other side of the nylon slider 21 is flush with the anti-collision block body 1.

[0022] In the above embodiment, the anti-collision block body 1 can be made of high-strength plastic or composite material, and its interior is provided with a groove for installing a nylon slider 21. The nylon slider 21 is a long strip structure, injection molded from high-density nylon material, and has good toughness and impact resistance. The structure of the slider 21 allows one end to extend out of the anti-collision block body 1 to form a protrusion, which is used to make initial contact with the external object and share the impact force when subjected to an external impact; while the other end remains flush with the outer surface of the anti-collision block body 1, thereby ensuring the flatness of the overall appearance and preventing unnecessary snagging or scratching. The anti-collision mechanism 2 is installed inside the anti-collision block body 1 through an interference fit or a sliding rail guide, allowing the slider 21 to slide slightly in a specific direction to absorb some of the impact energy. This structure effectively disperses the impact force between the anti-collision block body 1 and the nylon slider 21, enhancing the overall anti-collision capability. At the same time, the protrusion of the nylon slider 21 enables early contact and buffering, extending the service life of the anti-collision device and reducing the damage range. In addition, slider 21 can be replaced independently after being damaged, reducing maintenance costs.

[0023] In alternative or modified embodiments, the nylon slider 21 can be made of different grades of nylon material, such as PA6 or PA66, depending on the usage environment. Glass fiber can also be added to enhance its mechanical strength. The material of the anti-collision block body 1 can also be a metal-coated structure to improve structural strength and fatigue resistance, depending on installation requirements. The connection between the slider 21 and the anti-collision block body 1 can be achieved through threaded fastening, snap-locking, or magnetic connection to accommodate different assembly / disassembly frequencies and vibration resistance requirements. Regarding the slider structure, it can also be designed as a multi-segment or curved structure to enhance its ability to withstand impacts from multiple angles.

[0024] The nylon slider 21 is detachably mounted on the anti-collision block body 1. In the above embodiment, to achieve the detachable function of the nylon slider 21, the anti-collision block body 1 is provided with a corresponding shaped groove, and slots or guide rail structures are provided on both sides of the groove. The bottom of the nylon slider 21 is provided with a matching flange or sliding groove structure, which is fixed in the anti-collision block body 1 by insertion or sliding. When it is necessary to replace the nylon slider 21, it can be easily removed and replaced with a new slider simply by loosening the locking mechanism (such as a buckle or screw). This detachable structure not only facilitates maintenance and replacement, but also allows for replacement with sliders of different specifications or materials in different usage scenarios to adapt to different anti-collision requirements. By making the nylon slider 21 a detachable structure, the maintenance convenience of the device is significantly improved, and the maintenance cost of replacing the entire device due to slider wear is reduced. At the same time, this structural design enhances the modularity of the anti-collision device, which helps to improve standardized production efficiency. Especially in high-frequency use scenarios, damaged parts can be quickly replaced, improving the overall service life and efficiency.

[0025] In alternative or modified embodiments, the connection between the slider 21 and the anti-collision block body 1 can take various forms, such as embedded metal clips, magnetic adsorption structures, threaded connections, spring locks, etc., to adapt to different installation strength and disassembly frequency requirements; the slider shape can also be designed as arc-shaped, wedge-shaped, or with an anti-detachment structure to enhance its stability. To further improve the environmental adaptability of the device, a waterproof sealing gasket can be added to the connection interface between the slider and the body, suitable for anti-collision applications in outdoor or humid environments.

[0026] A cylindrical pin 3 is installed on the anti-collision block body 1, and the nylon slider 21 is connected to the anti-collision block body 1 through the cylindrical pin 3. In the above embodiment, the anti-collision block body 1 has a pre-set positioning hole or mounting through hole, the diameter of which matches the cylindrical pin 3 for securely installing the cylindrical pin 3. The nylon slider 21 has a corresponding through hole or locking hole, which can be inserted through the cylindrical pin 3 to form a connection. The cylindrical pin 3 is preferably made of stainless steel or surface-hardened steel to ensure good mechanical strength and wear resistance. During installation, the cylindrical pin 3 can be inserted between the slider 21 and the anti-collision block body 1 using an interference fit, elastic locking, or a chamfered design at both ends to achieve a firm connection. This connection method provides reliable structural support and facilitates the quick disassembly and replacement of the slider 21, ensuring the slider's installation is firm while retaining the advantage of convenient maintenance. In addition, the use of the cylindrical pin 3 can effectively prevent the slider from loosening or shifting during impact, improving the stability and impact resistance of the anti-collision system.

[0027] In alternative or modified embodiments, the installation method of the cylindrical pin 3 can be designed in various ways according to actual usage requirements. For example, snap ring grooves can be provided at both ends of the pin shaft to achieve quick locking through snap rings, or a threaded structure can be provided on the cylindrical pin 3 to enhance connection reliability in conjunction with the nut locking method. If the operating environment involves vibration or strong impact, elastic washers or buffer bushings can be added between the cylindrical pin and the interface of the slider / block to further absorb impact energy and reduce structural wear. In addition, the nylon slider 21 can also be designed as a multi-point cylindrical pin connection according to the actual spatial layout to improve structural stability and anti-loosening capability.

[0028] The nylon slider 21 is made of nylon. In the above embodiment, the nylon slider 21 is made of nylon material, preferably PA6 or PA66 nylon, which has good mechanical strength, wear resistance, and impact resistance, making it suitable for collision protection environments with frequent stress or friction. The slider is injection molded or precision machined to obtain the required shape, ensuring structural matching between it and the collision protection block body 1. Nylon material itself has good self-lubricating properties, which can reduce wear when subjected to impact or friction, effectively extending the service life of the slider and the device. The application of nylon material has significant advantages in collision protection devices. On the one hand, it is lighter than metal materials, making it easier to install and replace; on the other hand, the flexibility of nylon allows it to deform slightly when impacted, thereby buffering external forces and protecting the collision protection block body 1 and surrounding structures. In addition, nylon has excellent chemical corrosion resistance, making it suitable for various industrial and outdoor environments, improving the adaptability and reliability of the entire device. In alternative or modified embodiments, the specific material of the nylon slider 21 can be selected according to different application scenarios, such as reinforced nylon (PA66-GF30) to improve strength and heat resistance, or nylon materials modified with lubricants to further reduce the coefficient of friction. If the application environment has high temperature or high humidity requirements, materials with lower water absorption and higher dimensional stability, such as nylon 610 and nylon 12, can also be selected as alternatives. In addition, for easy identification and maintenance, the surface of the slider 21 can also be sprayed with a wear-resistant coating or marked with different colors to improve assembly efficiency and management convenience.

[0029] The nylon slider 21 protrudes 16mm-7mm beyond one side of the anti-collision block body 1. In the above embodiment, the structural design of the nylon slider 21 causes one end to protrude from the outside of the anti-collision block body 1 after installation, with the protrusion size controlled between 6mm and 7mm. This size was optimized through mechanical analysis and impact testing. This protruding part becomes the area where the anti-collision device first contacts an external object, enabling it to absorb the impact force first when an impact occurs and effectively mitigate the transmission of impact energy to the internal structure of the anti-collision block body 1. This protrusion amount satisfies sufficient buffer distance without affecting the compactness and aesthetics of the overall structure. This structural design with a set protrusion amount helps to improve the impact resistance and buffering effect of the anti-collision device, reduces the probability of hard collisions between the anti-collision block body 1 and external objects, and extends the service life of the device. In addition, the 6mm-7mm range is a common standard for reserved protective space, which can adapt to the installation requirements of most industrial equipment and transportation devices without affecting the safe operation of the equipment.

[0030] In alternative or modified embodiments, the protrusion size of the nylon slider 21 can be adjusted according to the specific application environment. For example, in heavy-duty or high-speed operating environments, the protrusion can be appropriately increased to 8mm-10mm to provide a longer buffer stroke; while in space-constrained or precision equipment, it can be compressed to 3mm-5mm to balance protective effect and structural compactness. Furthermore, the protruding end of the slider can also be designed as an arc, wedge, or beveled structure to disperse impact pressure and reduce the concentrated impact force that causes localized damage. To achieve precise control, a limiting structure can be provided between the slider and the body to prevent excessive movement or detachment of the slider due to excessive force.

[0031] A buffer pad is provided between the anti-collision block body 1 and the nylon slider 21. In the above embodiment, a buffer pad is provided between the embedded groove of the anti-collision block body 1 and the nylon slider 21. The pad material is preferably rubber, silicone, or a polymer elastomer material, and the thickness can be set between 1mm and 3mm depending on the specific application scenario. As an intermediate layer, the buffer pad is installed between the slider 21 and the body 1 by adhesion, nesting, or embedding. When the slider is impacted by an external force and displaced, the pad can undergo elastic compression, thereby absorbing part of the impact energy and reducing the impact intensity transmitted to the anti-collision block body 1. The buffer pad helps to further enhance the buffering performance and shock resistance of the anti-collision device, and at the same time, it can form an effective damping structure between the slider 21 and the body 1, avoiding noise, wear, and structural fatigue problems caused by rigid contact. The buffer pad can also play a role in fine-tuning the installation tolerance, improving the assembly accuracy, and ensuring the stability and life of the slider in a high-frequency impact environment.

[0032] In alternative or modified implementations, the material of the buffer pad can be selected according to temperature adaptability and durability requirements. For example, fluororubber pads can be used in high-temperature scenarios, while EPDM pads can be used in low-temperature or humid environments to enhance weather resistance. The shape of the pad can also be designed as a ring, groove, or corrugated structure according to the slider structure to improve cushioning and rebound performance. If structural space permits, lubricant can be applied to the contact surface between the pad and the slider, or a composite material structure (such as a rubber-metal composite pad) can be used to improve its fatigue resistance and service life.

[0033] The cylindrical pin 3 is an elastic pin. In the above embodiment, the cylindrical pin 3 adopts an elastic pin structure, preferably a coiled elastic pin or an open elastic pin, made of spring steel or stainless steel elastic material, to ensure good elastic deformation and reset capabilities during installation. This elastic pin achieves self-locking by pressing into the mating hole during installation, securing the nylon slider 21 to the anti-collision block body 1 without the need for additional fasteners. The radial elastic force of the elastic pin ensures it is not easily loosened in impact or vibration environments, while also possessing a certain buffering performance, further enhancing the impact resistance stability of the connection. Compared to ordinary solid cylindrical pins, the structural advantages of the elastic pin are: firstly, it is easy to install, enabling quick connection without the need for tapping or locking structures; secondly, it can undergo slight deformation upon impact, absorbing part of the impact load, thereby reducing stress concentration transmitted to the anti-collision block body 1, improving the overall impact resistance and service life of the system.

[0034] In replaceable or modified implementations, the type of elastic pin can be selected according to the specific application environment. For example, double-coil elastic pins can be used to improve connection strength, or stainless steel coated elastic pins can be used to meet outdoor corrosion resistance requirements. In scenarios requiring repeated disassembly and assembly, the elastic pins can also be designed with limit grooves at both ends or head structures that facilitate disassembly, improving replacement efficiency. In addition, to further improve connection reliability, positioning steps can be set in the mounting hole, or a buffer sleeve can be added between the pin hole and the elastic pin to enhance the multi-stage buffering and stable connection function between the slider and the body.

[0035] The outer surface of the nylon slider 21 is provided with an arc-shaped guide surface. In the above embodiment, the outer surface of the nylon slider 21 is machined to form an arc-shaped guide surface, which is preferably a circular arc segment or an elliptical arc structure. The curvature of the arc is designed according to the common impact angles and force directions in the application scenario. This guide surface is located on the side of the slider 21 that protrudes from the anti-collision block body 1. Its function is that when an external object contacts the slider in a non-frontal direction, the arc-shaped structure can guide the impact force to be dispersed along the arc surface, thereby reducing the impact pressure per unit area and guiding the object to slide and avoid collision, effectively reducing impact damage. The design of the arc-shaped guide surface not only helps to improve the anti-collision device's adaptability to oblique impacts, but also reduces the coefficient of friction between the device and the contacting object, avoiding jamming or obstruction of operation due to direct collision. At the same time, this structure also helps to improve the overall appearance smoothness of the device and reduce the risk of scratches caused by sharp edges, making it particularly suitable for safety protection of transportation equipment, warehousing systems, or densely populated areas.

[0036] In alternative or modified embodiments, the geometry of the arc-shaped guide surface can be adjusted according to different applications, such as being configured as a multi-segment composite arc surface or a gradually changing curvature structure to adapt to the guiding requirements under complex motion paths; a wear-resistant layer or a low-friction coating (such as a polytetrafluoroethylene coating) can also be applied to the guide surface to improve its service life and sliding performance. To enhance impact resistance, a reinforcing rib structure can also be added to the inner side of the slider 21 to enhance its rigidity and stability during stress. In special applications, it can also be designed as a replaceable guide surface module for easy maintenance and functional expansion.

[0037] Working Process: In practical applications, a suitable position is first selected on the fixed arm. The optimal installation area can be determined through three-dimensional simulation analysis, and threaded holes matching the anti-collision device are drilled in this area. The anti-collision device is then installed on the fixed arm, ensuring its robust structure and precise alignment to effectively protect the arm during operation. During equipment operation, when the arm swings due to inertia or trajectory deviation and potentially contacts the frame, the nylon slider 21 of the anti-collision device first contacts the frame. Because the nylon slider 21 is made of a material with a lower hardness than metal, it possesses excellent buffering and energy absorption properties. Therefore, it can absorb some impact energy in the initial stage of the collision, thereby reducing damage to the arm and frame structure and extending the overall service life of the equipment. With increasing usage time, the nylon slider gradually wears down after repeated impacts. When the distance between its outer end face and the anti-collision block body is close to 1mm to 2mm, it indicates that the slider is nearing its wear limit and needs to be replaced. At this time, the worn slider can be removed and replaced with a new slider by pulling out the elastic pin used to fix the nylon slider 21. The elastic pin has an expansion structure. After being inserted into the fixing hole in the anti-collision block body 1, it will expand radially to form a stable self-locking effect. Therefore, it is not easy to fall off under normal working conditions, ensuring stable installation of the slider.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A collision avoidance device, characterized in that, include: Anti-collision block body (1); The anti-collision mechanism (2) is provided on the anti-collision block body (1). The anti-collision mechanism (2) includes a nylon slider (21) embedded inside the anti-collision block body (1). One side of the nylon slider (21) protrudes from the anti-collision block body (1), and the other side of the nylon slider (21) is flush with the anti-collision block body (1).

2. The anti-collision device according to claim 1, characterized in that: The nylon slider (21) is detachably mounted on the anti-collision block body (1).

3. The anti-collision device according to claim 1, characterized in that: A cylindrical pin (3) is installed on the anti-collision block body (1), and the nylon slider (21) is connected to the anti-collision block body (1) through the cylindrical pin (3).

4. The anti-collision device according to claim 1, characterized in that: The nylon slider (21) is made of nylon.

5. The anti-collision device according to claim 1, characterized in that: The nylon slider (21) protrudes from one side of the anti-collision block body (1) by 6mm-7mm.

6. The anti-collision device according to claim 1, characterized in that: A buffer pad is provided between the anti-collision block body (1) and the nylon slider (21).

7. The anti-collision device according to claim 3, characterized in that: The cylindrical pin (3) is an elastic pin.

8. The anti-collision device according to claim 1, characterized in that: The outer surface of the nylon slider (21) is provided with an arc-shaped guide surface.

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