A light and practical cab front window glass protection device for construction machinery

Abstract

This utility model discloses a lightweight and practical windshield protection device for the cab of construction machinery, relating to the field of safety protection technology for construction machinery, and applicable to equipment such as excavators, bulldozers, and loaders. The device includes a stainless steel frame, slide rails, pulleys, an adjustable retractable protective net, and a motor. The stainless steel frame is welded to the front of the windshield 10-20 cm away. Slide rails are installed on both sides of the frame, with pulleys embedded in the rails. The protective net is connected to the pulleys on both sides and fixed to the motor shaft at its top. The motor automatically raises and lowers the protective net via an electronic control device, and a manual operation mode is also provided. The protective net is made of high-strength composite material, combining impact resistance and lightweight design. The device is rust-proof and wear-resistant, adaptable to harsh environments, and allows for flexible adjustment of the protective height without obstructing the view, effectively improving operational safety and practicality. When in use, the protective net can be completely retracted to the top of the cab, without occupying extra space, keeping the windshield clean, conforming to ergonomic design, and improving operational efficiency.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology for engineering machinery, and in particular to a lightweight and practical protective device for the front window glass of the cab of engineering machinery. Background Technology

[0002] During the operation of construction machinery (such as excavators, bulldozers, loaders, etc.), the windshield of the cab is often damaged by impacts from flying rocks, debris, and other objects in the working environment, affecting the normal operation of the equipment and the safety of the driver. Traditional windshield protection devices mostly use fixed metal grilles or heavy protective plates, which have the following problems: First, the overall weight is large, increasing the load on the equipment; second, the fixed structure can easily obstruct the driver's view, affecting operational safety; third, operation is inconvenient, and it is difficult to flexibly adjust according to actual protection needs. Especially in harsh environments such as mines and construction sites, the protective effect and practicality of traditional devices are insufficient, and there is an urgent need for a lightweight, flexible, and unobstructed vision protection device. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a lightweight and practical windshield protection device for the cab of construction machinery. It solves the technical problems of traditional windshield protection devices for construction machinery cabs being heavy, obstructing vision, inconvenient to operate, and unable to effectively prevent windshield damage caused by flying stones and debris.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A lightweight and practical protective device for the front window glass of the cab of engineering machinery consists of a stainless steel frame, slide rails, pulleys, an adjustable roller blind retractable protective net, and a motor with rollers. The stainless steel frame is welded to the front of the cab window 10-20 cm away, and its length, width and height match the edge dimensions of the mechanical cab window to fix the edge of the window. The slide rails are installed on both sides of the stainless steel frame, and the pulleys are embedded in the slide rails. The adjustable roller shutter retraction protective net is connected to the pulleys on the left and right sides, and the upper end is fixed to the motor shaft. This device can effectively block flying stones from directly impacting the windshield, ensuring the driver's visibility and improving operational safety.

[0005] Preferred option: The adjustable roller shutter retractable protective net is an adjustable roller shutter retractable type, which can move up and down through a pulley and rail system to adapt to different height protection requirements; The adjustable roller shutter retractable safety net is made of high-strength, impact-resistant composite materials (such as polycarbonate and glass fiber composite), which are both lightweight and easy to operate.

[0006] Preferably, the motor is connected to the roller shutter system of the adjustable roller shutter retractable protective net, and the automatic raising and lowering of the adjustable roller shutter retractable protective net is realized through an electronic control device (including a control switch or remote control module); The motor (with rollers) has overload protection and can automatically stop when it encounters large resistance to avoid damage to the device.

[0007] Preferred: The stainless steel frame has a rust-proof surface treatment, which can adapt to various harsh working environments and ensure the long-term durability of the device.

[0008] Preferred: The slide rail and pulley system is made of wear-resistant materials (such as nylon or polyurethane) to ensure that the adjustable roller shutter retraction safety net maintains smooth sliding performance during frequent use.

[0009] Preferred option: The adjustable roller shutter retractable safety net can be completely retracted to the top of the cab when not in use, without taking up extra space and keeping the cab's front window neat and aesthetically pleasing.

[0010] Preferably, the device is also equipped with a manual operation mode. In case of motor failure or insufficient power, the adjustable roller shutter can be raised and lowered to retract the protective net, ensuring the reliability of the equipment.

[0011] Preferred features: The overall design of the device conforms to ergonomics, is easy to operate, and the driver can easily control the raising and lowering of the adjustable roller shutter retractable protective net, thereby improving work efficiency.

[0012] Preferred: The device is suitable for a variety of engineering machinery, such as excavators, bulldozers, loaders, etc., and has wide applicability.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Highly efficient and reliable protection: The adjustable roller shutter retractable protective net is made of high-strength composite materials (such as polycarbonate and glass fiber composite), which can effectively block flying stones, debris and other impacts, prevent the windshield from breaking and ensure the safety of the cab.

[0014] Lightweight and does not obstruct vision: The entire device adopts a lightweight design, with a lightweight stainless steel frame, wear-resistant slide rails and pulley system, and composite material protective netting, which does not add extra load to the equipment; the protective netting is also transparent, so as not to affect the driver's vision and improve operational safety.

[0015] Flexible and convenient operation: The protective net is automatically raised and lowered by a motor. With the help of an electronic control device (including a control switch or remote control module), the driver can operate it easily. It is also equipped with a manual operation mode, which can still be used normally in case of motor failure or insufficient power, ensuring reliability.

[0016] High adaptability: The stainless steel frame is rust-proofed, and the slide rails and pulleys are made of wear-resistant materials (such as nylon or polyurethane), which can adapt to harsh working environments such as dust and high humidity, extending the service life of the device; and it can be adapted to the front window size of different construction machinery (such as excavators, bulldozers, loaders), making it widely applicable.

[0017] Compact and aesthetically pleasing structure: When not in use, the safety net can be completely retracted to the top of the cab, without taking up extra space, keeping the front window clean, conforming to ergonomic design, and improving operational convenience and work efficiency. Attached Figure Description

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a structural diagram of the present invention.

[0020] Illustration: 1. Stainless steel frame; 2. Pulleys; 3. Slide rail; 4. Adjustable roller shutter retraction safety net; 5. Motor. Detailed Implementation

[0021] This application provides a lightweight and practical windshield protection device for the cab of construction machinery, which effectively solves the technical problems of traditional windshield protection devices for construction machinery being heavy, obstructing vision, inconvenient to operate, and difficult to effectively prevent windshield damage caused by flying stones and debris. Example

[0022] like Figure 1 As shown, the overall technical approach in this application embodiment is as follows: In view of the problems existing in the prior art, this utility model provides a lightweight and practical protective device for the front window glass of the cab of engineering machinery. The device mainly consists of a stainless steel frame 1, a slide rail 3, a pulley 2, an adjustable roller blind retractable protective net 4, a motor 5, and a matching electrical control device.

[0023] Stainless steel frame 1: Made of stainless steel, its length, width and height dimensions are perfectly matched with the edge dimensions of the front window of the engineering machinery cab. The frame has a rectangular structure and the surface is galvanized or sprayed with anti-rust paint to achieve rust prevention.

[0024] Slide rail 3: Made of wear-resistant materials such as nylon or polyurethane, it is long and narrow, with the length matching the height of the stainless steel frame 1. Its cross-section is grooved, and the groove size is adapted to the pulley 2.

[0025] Pulley 2: Also made of nylon or polyurethane material, cylindrical in shape, with an outer diameter matching the groove width of slide rail 3, allowing it to roll freely within the groove. Pulley 2 has a connecting hole in the center.

[0026] Adjustable roller shutter retractable protective net 4: Made of high-strength composite material of polycarbonate and glass fiber, the whole is a mesh film structure with rollable characteristics, and the edges are provided with mounting holes for connection.

[0027] Motor 5: It is a drive motor with rollers. The rollers are equipped with fixed seats at both ends. The output end of motor 5 is connected to the rollers for transmission. The roller surface is equipped with slots for fixing the protective net. Motor 5 has a built-in overload protection structure.

[0028] Installation steps: Installation of stainless steel frame 1: The four edges of stainless steel frame 1 are spliced ​​together to form a rectangle and then fixed together by welding. The frame is then welded to the front of the cab window 10-20 cm away. The welding position should ensure that the inner edge of the frame is aligned with the edge of the window and the plane of the frame is parallel to the plane of the window. The welding points should be firm and without obvious protrusions to avoid affecting the installation of subsequent components.

[0029] Installation of slide rail 3 and pulley 2: Take two slide rails 3 and arrange them along the vertical sides of the stainless steel frame 1 on the left and right sides respectively. The length direction of the slide rail 3 is consistent with the height direction of the frame. Fix the slide rail 3 to the inner wall of the frame by bolts or welding, ensuring that the groove opening of the slide rail 3 faces the inside of the frame.

[0030] Insert the pulleys 2 one by one into the grooves of the slide rails 3. Each slide rail 3 has 3-5 pulleys 2 evenly arranged (the number is adjusted according to the height of the frame). The pulleys 2 can roll freely along the length of the slide rail 3.

[0031] Fixing the adjustable roller shutter retractable protective net 4: Unfold the adjustable roller shutter retractable protective net 4, with its left and right edges corresponding to the pulleys 2 in the side rails 3. Secure the protective net to the pulleys 2 by passing bolts through the mounting holes on the edge of the protective net and the connection holes of the pulleys 2. After connection, the protective net should remain flat and be able to move synchronously with the pulleys 2. Insert the upper edge of the protective net into the slot of the roller of the motor 5, and fix the protective net to the roller with bolts or clips, ensuring a tight connection between the upper edge of the protective net and the roller, so that it can be completely wrapped around the roller when rolled up.

[0032] Installation of Motor 5 and Electronic Control Device: Mount Motor 5 on the top of the cab using a mounting bracket, directly above the stainless steel frame 1. Ensure the motor rollers are parallel to the upper edge of the frame and that the roller length matches the width of the adjustable roller shutter retractable protective net 4. Connect the power supply line of Motor 5 to the battery of the construction machinery (ensuring voltage matching). Install a control switch (or remote control module) within the driver's operating range inside the cab. Connect the control switch to the control terminal of Motor 5 via a wire to achieve forward and reverse rotation control of Motor 5.

[0033] This device can also install a manual handle (or crank connector) at the middle of the lower edge of the adjustable roller shutter retractable safety net 4. The handle is connected to the safety net via a rope or connecting rod, and the other end of the rope extends to a position in the cab for easy operation, ensuring that the safety net can be raised and lowered by pulling the handle in case of motor 5 failure.

[0034] Working principle: Automatic operation mode: The driver sends commands to motor 5 by operating the control switch or remote control module inside the cab: When it is necessary to lower the adjustable roller shutter retractable protective net 4, control the motor 5 to rotate forward, the motor 5 drives the roller to rotate and release the protective net. Under its own weight and the cooperation of the pulley 2 and the slide rail 3, the protective net moves downward along the height direction of the stainless steel frame 1 until the required protective height is reached, and then the motor 5 is turned off. When it is necessary to retract the adjustable roller shutter protective net 4, the control motor 5 reverses, and the motor 5 drives the roller to rotate in the opposite direction, rolling the protective net upward. The protective net moves upward along the slide rail 3 with the pulley 2 until it is completely wrapped around the roller. At this time, the protective net is stored on the top of the cab, located in the upper part of the stainless steel frame 1.

[0035] If the protective net encounters significant resistance such as foreign objects getting stuck during the lifting and lowering process, the overload protection circuit inside motor 5 will be activated, and motor 5 will automatically stop running to prevent damage to the device.

[0036] Manual operation mode: When motor 5 fails or the power of the construction machinery is insufficient, the driver can pull the manual handle in the cab to move the adjustable roller shutter protective net 4 and pulley 2 up and down along the slide rail 3 via the rope, so as to realize the raising and lowering operation of the protective net. After the operation is completed, the position of the protective net can be fixed by temporary buckles.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A portable protective device for the front window of the cab of an engineering vehicle, characterised in that, It consists of a stainless steel frame (1), a slide rail (3), pulleys (2), an adjustable roller shutter retractable protective net (4), and a motor (5); Among them, the stainless steel frame (1) is welded to the front end of the cab window 10-20 cm away, and its length, width and height match the edge size of the cab window. The slide rail (3) is fixedly installed on the left and right sides of the stainless steel frame (1); The pulley (2) is embedded in the slide rail (3) and can slide along the length of the slide rail (3); The left and right sides of the adjustable roller shutter retractable protective net (4) are fixedly connected to the corresponding pulleys (2) respectively, and its upper end is fixedly connected to the rotating shaft of the motor (5); The motor (5) is fixed to the top of the cab, and its position corresponds to the upper end of the adjustable roller shutter retractable protective net (4).

2. The apparatus of claim 1, wherein, The adjustable roller shutter retraction protective net (4) is an adjustable roller shutter retraction type. It moves up and down along the height direction of the stainless steel frame (1) by sliding the pulleys (2) connected on the left and right sides in the slide rail (3). The adjustable roller shutter retractable protective net (4) is made of high-strength, impact-resistant composite material.

3. The apparatus of claim 1, wherein, The output end of the motor (5) is connected to the roller shutter system of the adjustable roller shutter retraction protective net (4); The motor (5) is electrically connected to the electrical control device, and its forward and reverse rotation is controlled by the electrical control device to drive the adjustable roller shutter retractable protective net (4) to rise and fall; The motor (5) has a built-in overload protection structure.

4. The apparatus according to claim 1, characterized in that, The outer surface of the stainless steel frame (1) is treated with rust prevention.

5. The apparatus of claim 1, wherein, The slide rail (3) and pulley (2) are both made of wear-resistant materials. The slide rail (3) is fixedly connected to both sides of the stainless steel frame (1), and the pulley (2) is slidingly connected to the slide rail (3).

6. The apparatus of claim 1, wherein, The adjustable roller shutter retractable protective net (4) is rolled up by a motor (5) in the retracted state and completely stored on the top of the cab, within the upper range of the stainless steel frame (1).

7. The apparatus of claim 1, wherein, The stainless steel frame (1) is adapted to the size of the cab front window of the excavator, bulldozer and loader. The installation positions of the slide rail (3), pulley (2), adjustable roller shutter retractable protective net (4) and motor (5) are adjusted synchronously with the size of the stainless steel frame (1).

Images