A retractable protective shield

Abstract

The utility model provides a telescopic protective baffle relates to protective baffle technical field, including frame, two parallel and telescopic setting in the baffle of frame, drive mechanism is installed on the frame, setting in the guide assembly between frame and every baffle and the limiting component of setting in the frame bottom. Drive mechanism can drive two baffle respectively relative frame and do linear telescopic motion, guide assembly is used for guiding baffle and carries out linear motion, limiting component is used for limiting the swing of baffle in the movement process. The utility model can according to the space condition of operation site and actual protection demand, flexible adjustment overall protection width, give consideration to equipment passability and protection coverage. The device runs smoothly, avoids appearing the problem of jam, offset or swing, simple structure, convenient operation, effectively promotes the security of engineering construction and mineral exploitation operation, is applicable to a variety of complex construction scene.

Description

Technical Field

[0001] This utility model mainly relates to the field of protective baffle technology, specifically to a retractable protective baffle. Background Technology

[0002] In various engineering operations such as building construction, mining, and tunnel excavation, the construction site environment is usually complex and presents numerous safety hazards. For example, in conditions such as slope treatment, shaft excavation, or open-pit mining, falling rocks, boulders, and flying rock fragments are among the main sources of risk threatening the safety of on-site workers. Currently, to ensure the safety of operators, common construction machinery equipment typically incorporates specialized anti-rollover and anti-falling object protection designs in its cab, providing the driver with a relatively safe, enclosed space.

[0003] However, for support staff, supervisors, or construction workers who need to work alongside the equipment, or those who operate or observe the equipment at close range, effective safety protection is often lacking. Currently, only a few engineering equipment pieces have fixed protective barriers installed on their sides. While these fixed barriers can block falling rocks or flying debris from the sides to some extent, their structure has significant limitations.

[0004] First, the protective width of fixed barriers is predetermined and cannot be changed. In narrow construction sites, tunnels, or trenches, excessively wide barriers can severely reduce equipment mobility, even preventing equipment from entering the work area or causing scratches and collisions. Conversely, if the barriers are designed to be narrow for mobility, their protective range becomes insufficient in open areas requiring large-area protection, failing to effectively cover the personnel activity area beside the equipment. Second, existing fixed barriers are mostly one-piece structures, with no independent adjustment on either side, making them difficult to adapt to asymmetrical work spaces or specific local protection needs. Therefore, there is an urgent need for a protective barrier that can flexibly adjust its protective width, balancing mobility and protective range, and is easy to operate, to solve the aforementioned technical problems. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model: This utility model provides a retractable protective baffle to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is: a retractable protective baffle, comprising: frame; Two baffles are arranged parallel to each other and retractably within the frame; A drive mechanism, mounted on the frame, is used to drive two baffles to perform linear telescopic movements relative to the frame. The drive mechanism includes two independent drivers and a transmission mechanism that connects each driver to the corresponding baffle. The two drivers are respectively mounted on the left and right sides of the top of the frame. A guide assembly, disposed between the frame and each baffle, guides the baffles to perform linear motion. The guide assembly includes a guide plate fixed to the side of the baffle and a plurality of guide wheels mounted on the frame and rollingly engaging with the guide plate. A limiting component is disposed at the bottom of the frame to limit the swing of the baffle during movement. The limiting component includes a row of limiting wheels installed at the bottom of the frame. The outer circumferential surface of the limiting wheels is provided with an annular groove that matches the lower edge of the baffle. The lower edge of the baffle is embedded in the annular groove.

[0007] Preferably, the transmission mechanism includes a gear and a rack that mesh with each other, the gear being fixedly connected to the output shaft of the driver, and the rack being fixedly mounted on a corresponding baffle.

[0008] Preferably, the actuator is a hydraulic motor or an electric motor.

[0009] Preferably, at least two rows of guide wheels are evenly arranged on the frame along the direction of movement of the baffle.

[0010] Preferably, the guide wheels are arranged in three rows, which respectively make rolling contact with the two sides of the guide plate.

[0011] Preferably, when both baffles are in the fully retracted state, the overall width of the two baffles is equal to the width of the frame.

[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This invention, by setting up a drive mechanism, guide components, and limiting components, drives two baffles to perform independent linear telescopic movements within the frame, achieving flexible adjustment of the protective width. When passing through narrow sections or moving equipment, the baffles on both sides can be retracted, reducing the overall width to be comparable to the equipment body, greatly improving the equipment's passability and portability. During operation, one or both baffles can be extended as needed on site, significantly expanding the lateral protection range, achieving a perfect balance between protective performance and mobility.

[0013] This invention employs two independent actuators, one on the left and one on the right, to drive the corresponding baffles respectively, ensuring that the extension and retraction movements of the left and right baffles are independent and freely controllable. Operators can adjust the extension length of a single baffle according to the shape of the actual work site and the location of hazards, thus adapting with high flexibility to asymmetrical and irregular complex work environments and avoiding unnecessary space occupation.

[0014] This invention, through the cooperation of the guide component and the limiting component, not only ensures the smoothness and straightness of the baffle's movement during extension and retraction, but also effectively constrains the swing of the lower edge of the baffle through the annular groove on the limiting wheel. This ensures that the baffle can maintain structural stability and precise movement trajectory when subjected to loads such as falling rock impacts, thus providing reliable and durable protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 AA section view; Figure 3 This utility model Figure 1 BB cross-sectional view.

[0016] Figure label: 1. Frame; 2. Baffle; 3. Guide plate; 4. Guide wheel; 5. Limit wheel; 6. Driver; 7. Gear; 8. Rack. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Example

[0022] See attached document Figures 1-3 A retractable protective barrier, comprising: Framework 1; Two baffles 2 are parallel and retractable within the frame 1; The drive mechanism, mounted on the frame 1, is used to drive the two baffles 2 to perform linear telescopic motion relative to the frame 1 respectively. A guide assembly, disposed between the frame 1 and each baffle 2, is used to guide the baffle 2 in linear motion; and A limiting component is installed at the bottom of the frame 1 to limit the swing of the baffle 2 during movement.

[0023] The drive mechanism includes two independent drivers 6 and a transmission mechanism that connects each driver 6 to the corresponding baffle 2. The two drivers 6 are respectively installed on the left and right sides of the top of the frame 1.

[0024] The transmission mechanism includes a gear 7 and a rack 8 that mesh with each other. The gear 7 is fixedly connected to the output shaft of the driver 6, and the rack 8 is fixedly mounted on the corresponding baffle 2.

[0025] The drive 6 is a hydraulic motor or an electric motor.

[0026] The guide assembly includes a guide plate 3 fixed to the side of the baffle 2 and several guide wheels 4 mounted on the frame 1 and rollingly engaging with the guide plate 3.

[0027] At least two rows of guide wheels 4 are evenly arranged on the frame 1 along the direction of movement of the baffle 2.

[0028] The guide wheels 4 are arranged in three rows, which make rolling contact with the two sides of the guide plate 3 respectively.

[0029] The limiting component includes a row of limiting wheels 5 installed at the bottom of the frame 1. The outer circumferential surface of the limiting wheels 5 is provided with an annular groove that matches the lower edge of the baffle 2. The lower edge of the baffle 2 is embedded in the annular groove.

[0030] When both baffles 2 are fully retracted, the overall width of the two baffles 2 is equal to the width of the frame 1.

[0031] Working principle: The retractable protective baffle of this utility model is installed on the body of engineering machinery equipment such as excavators and loaders. In its initial state, both baffles 2 are fully retracted into the frame 1. At this time, the overall width of the two baffles 2 is equal to the width of the frame 1, and the overall width of the equipment is minimized, which facilitates movement and passage through narrow spaces.

[0032] When the equipment arrives at the work site and the lateral protection range needs to be expanded, the operator can activate the drive mechanism. Taking the need to extend the left baffle 2 as an example: the left drive 6 starts to rotate forward, and its output shaft drives the fixedly connected gear 7 to rotate synchronously. Since the gear 7 meshes with the rack 8 fixed on the left baffle 2, the rotational motion of the gear 7 is converted into the linear motion of the rack 8, thereby pushing the left baffle 2 to extend outward from the frame 1.

[0033] As the left baffle 2 moves to the left, the guide assembly begins to function. The guide plate 3, fixed to the side of the baffle 2, rolls in contact with the multiple rows of guide wheels 4 mounted on the frame 1. Two guide channels are formed between the three rows of guide wheels 4, and the guide plates 3, fixed to the sides of the two baffles 2 respectively, are embedded into these two guide channels, making rolling contact with the guide wheels 4. The three rows of guide wheels 4 clamp the guide plates 3 from both sides, strictly constraining the movement trajectory of the baffle 2 to a straight line, preventing the baffle 2 from shifting left or right, and effectively preventing the baffle 2 from deflecting up or down or getting stuck during extension and retraction. Simultaneously, a row of limiting wheels 5 located at the bottom of the frame 1 also works synchronously. The annular groove on the outer circumference of the limiting wheel 5 precisely accommodates the lower edge of the baffle 2, ensuring that the lower edge of the baffle 2 is always restricted to sliding within the groove. This provides auxiliary support at the bottom and completely restricts the back-and-forth swing of the baffle 2 in the horizontal plane, ensuring structural rigidity after long-stroke extension.

[0034] Once the left baffle 2 extends to the predetermined length, the operator closes or locks the left actuator 6, and the baffle 2 remains in the extended position, forming an effective lateral protective barrier. If the baffle 2 needs to be retracted, simply control the actuator 6 to rotate in the opposite direction; the gear 7 and rack 8 will then drive the baffle 2 to move in a reverse linear motion until it is fully retracted into the frame 1. The extension and retraction of the right baffle 2 follows the same principle. Furthermore, because two independent actuators 6 are used, the extension and retraction of the left and right baffles 2 can be performed simultaneously or independently without interference. This allows for free and flexible adjustment of the overall protective width and shape according to any complex work site requirements.

[0035] The independently driven double-baffle structure effectively solves the problems of fixed width and poor flexibility of existing fixed protective baffles. The two baffles 2 can extend and retract independently, allowing for flexible adjustment of the overall protective width according to the spatial conditions of the work site and actual protection needs, balancing equipment accessibility and protective coverage. When the baffles 2 are fully retracted, the overall width is consistent with the frame 1, ensuring smooth passage of equipment in narrow spaces. When it is necessary to expand the protective range, one or both baffles 2 can be extended, significantly increasing the protective area. The coordinated operation of the guide and limit components ensures smooth and stable extension and retraction of the baffles 2, avoiding problems such as jamming, offset, or swaying, thus improving the operational reliability and service life of the device. This utility model has a simple structure and is easy to operate, effectively improving the safety of engineering construction and mining operations, and is suitable for various complex construction scenarios.

[0036] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A retractable protective baffle, characterized in that, include: Framework (1); Two baffles (2) are arranged parallel to each other and retractably within the frame (1); A drive mechanism is installed on the frame (1) to drive the two baffles (2) to perform linear telescopic movements relative to the frame (1). The drive mechanism includes two independent drivers (6) and a transmission mechanism that connects each driver (6) to the corresponding baffle (2). The two drivers (6) are installed on the left and right sides of the top of the frame (1). A guide assembly, disposed between the frame (1) and each baffle (2), is used to guide the baffle (2) in linear motion. The guide assembly includes a guide plate (3) fixed to the side of the baffle (2) and a plurality of guide wheels (4) mounted on the frame (1) and rollingly engaging with the guide plate (3); and A limiting component is provided at the bottom of the frame (1) to limit the swing of the baffle (2) during the movement. The limiting component includes a row of limiting wheels (5) installed at the bottom of the frame (1). The outer circumferential surface of the limiting wheel (5) is provided with an annular groove that matches the lower edge of the baffle (2). The lower edge of the baffle (2) is embedded in the annular groove.

2. The retractable protective baffle according to claim 1, characterized in that: The transmission mechanism includes a gear (7) and a rack (8) that mesh with each other. The gear (7) is fixedly connected to the output shaft of the driver (6), and the rack (8) is fixedly mounted on the corresponding baffle (2).

3. A retractable protective baffle according to claim 2, characterized in that: The driver (6) is a hydraulic motor or an electric motor.

4. A retractable protective baffle according to claim 1, characterized in that: At least two rows of guide wheels (4) are evenly arranged on the frame (1) along the direction of movement of the baffle (2).

5. A retractable protective baffle according to claim 1, characterized in that: The guide wheels (4) are arranged in three rows, and they make rolling contact with the two sides of the guide plate (3) respectively.

6. A retractable protective baffle according to claim 1, characterized in that: When both baffles (2) are in the fully retracted state, the overall width of the two baffles (2) is equal to the width of the frame (1).

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