Safety fence with gravel buffer structure

Abstract

The utility model relates to the technical field of mine operation discloses a safety guard frame with gravel buffer structure, including setting in the mine cave and with the support frame of mine cave and leaving the gap, support frame and mine cave are fixedly connected through fixed anchor rod, and the buffer assembly is equipped between two fixed anchor rods of adjacent, and the buffer assembly includes the baffle fixed frame of installing in the outer surface of support frame, and the both sides of fixed frame rotatably are equipped with movable baffle, and the bottom surface four corners of movable baffle are supported through the movable rod of wearing in support frame, and the lower end of movable rod is equipped with the tension spring of sleeve, and the both ends of tension spring are fixed in the inside surface of support frame and the lower end portion of movable rod respectively, the inside of support frame is installed with fixed block, and the one side of fixed block is inserted and is connected with support rod, and the lower end of support rod is installed in the support block of being fixed on the ground of mine cave.

Description

Technical Field

[0001] This utility model relates to the field of mining operation technology, and in particular to a safety protection device, specifically a safety protection frame with a crushed stone buffer structure. Background Technology

[0002] In the existing technology, mine safety protection frames are important equipment specifically used in mine operations to ensure worker safety and prevent mine roof collapse accidents. The protection frames must be able to withstand the enormous pressure from above to ensure their stability.

[0003] When existing mine safety protection frames are in use, if crushed rock impacts the top of the frame in the form of free fall or high-speed splash, the rigid structure of the mine safety protection frame will directly bear the entire impact load. The rigid collision will create local stress concentration at the contact point, and the impact force will be directly transmitted to the supporting frame, which may lead to hidden structural damage such as weld cracking and bolt loosening.

[0004] Rigid impacts can cause rock fragments to bounce and fly in unpredictable directions, potentially injuring workers within the affected area. Additionally, micro-vibrations or blasting vibrations in the mine can trigger resonance, leading to overall instability.

[0005] Moreover, when gravel hits the top of the protective frame, it not only makes noise, thus affecting the workers' normal construction, but also affects the overall stability of the entire support frame. Utility Model Content

[0006] To address the problems currently faced by mine safety protection frames, such as the need to withstand impact loads from falling or high-speed flying rocks, which can easily lead to structural damage, injuries from rebounding rocks, and noise disturbances during construction, this utility model provides a safety protection frame with a rock cushioning structure.

[0007] This utility model is achieved using the following technical solution:

[0008] A safety protection frame with a crushed stone buffer structure includes a support frame installed inside a mine shaft with a gap between it and the shaft. The support frame is fixedly connected to the mine shaft by fixed anchor bolts. A buffer assembly is provided between two adjacent fixed anchor bolts. The buffer assembly includes a baffle fixing frame installed on the outer surface of the support frame. Movable baffles are rotatably provided on both sides of the fixing frame. The four corners of the bottom surface of the movable baffles are supported by movable rods that are mounted on the support frame. The lower end of the movable rod is fitted with a tension spring, and the two ends of the tension spring are respectively fixed to the inner side of the support frame and the lower end of the movable rod. A fixing block is installed on the inner side of the support frame. A support rod is inserted into one side of the fixing block, and the lower end of the support rod is installed in the support block fixed to the ground of the mine shaft.

[0009] During implementation, the system includes a support frame installed inside the mine shaft with a gap between it and the shaft. The support frame is fixedly connected to the mine shaft by anchor bolts. A buffer pad, made of rubber, is laid on the outer surface of the support frame. A buffer assembly is installed between two adjacent anchor bolts. The buffer assembly includes a baffle fixing frame installed on the outer surface of the support frame. Crushed stones do not fall directly onto the support frame but onto movable baffles. Five sets of baffle fixing frames are evenly distributed on each support frame, with equal distances between adjacent baffle fixing frames. Movable baffles are rotatably installed on both sides of the fixing frame. The four corners of the bottom surface of the movable baffles are supported by movable rods mounted on the support frame. Four movable rods are installed below each movable baffle. Tension springs are fitted at the lower ends of the movable rods, and the two ends of the tension springs are fixed to the inner side of the support frame and the lower end of the movable rods, respectively. A fixing block is installed on the inner side of the support frame, and a support rod is inserted into one side of the fixing block. The lower end of the support rod is installed in the support block fixed to the ground of the mine shaft.

[0010] The fixing block is welded to the inner surface of the support frame. The fixing block has an installation groove inside, and there are notches on both sides of the installation groove.

[0011] A locking rod is installed inside the support rod via a fixed shaft. A locking block is installed at one end of the locking rod, extending out of the support rod. The locking block extends out of the support rod and engages with the locking notch. A compression spring is provided on the back side of the support rod located on the locking block. A push rod is inserted into the support rod and abuts against the surface of the locking rod. A ball is provided at the end of the push rod that contacts the locking rod. The ball is movably locked onto the end face of the push rod. The push rod is located at the end of the locking rod where the locking block is installed.

[0012] Furthermore, there are two locking levers, with a compression spring between the opposing surfaces of the two locking levers, and each locking lever has its own locking block on its opposing back side; the side of the locking levers that is far apart from each other abuts against the ball bearing.

[0013] During installation, press the push rod inward, causing it to press the locking rod inward. The locking rod rotates around its axis. As the locking rod rotates, the ball moves along the surface of the locking rod, and the locking block retracts into the support rod. Insert the support rod into the mounting slot of the fixing block, release the push rod, and the locking block and locking notch engage to achieve quick installation of the support rod. Conversely, release the push rod to achieve quick disassembly of the support rod.

[0014] In operation, when gravel falls inside the mine shaft, it does not directly impact the support frame. Instead, it first contacts the movable baffle, generating impact force. Upon impact, the movable baffle rotates around its rotating connection with the fixed frame, simultaneously exerting a downward compressive force on the four movable rods at its four corners. These rods, compressed, move downwards along the mounting direction, stretching the tension springs at their lower ends. The elastic deformation of these springs generates a reverse buffering force, effectively weakening the impact kinetic energy of the gravel and preventing a violent impact on the support frame.

[0015] Subsequently, the gravel slides down the movable baffle. Even if some of it passes through the gaps in the movable baffle and enters the outside of the support frame, the buffer pad laid on the outer surface of the support frame will come into contact with the gravel for secondary buffering, further reducing the impact of the gravel on the support frame, and it will slide down along the curvature of the support frame surface at any time.

[0016] The fixing block inside the support frame is plugged into and fixed to the support rod. The lower end of the support rod is firmly supported on the mine floor by the support block, providing stable support for the entire support frame and ensuring that the support frame structure remains stable when the buffer component is subjected to the impact of gravel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a safety protection frame with a gravel buffer structure, which buffers the gravel falling inside the mine shaft and prevents the gravel from violently impacting the support frame and causing damage.

[0019] 1. This safety guard with a gravel buffer structure, when the top of the support frame is impacted by gravel, the gravel will first strike the movable baffle at the top of the support frame, causing the movable baffle to rotate via the pivot between it and the fixed frame, and squeezing the movable rod at the bottom. The movable rod will move downward under the pressure, and the tension spring on the outside of the movable rod will be stretched. The deformation of the tension spring can buffer the gravel, thereby preventing the gravel from directly impacting the support frame and causing damage. At the same time, the design of the tension spring can effectively protect the tension spring from impact and avoid damage.

[0020] 2. This safety protection frame with a crushed stone buffer structure, during use, utilizes a locking mechanism consisting of a locking rod, locking block, and compression spring to quickly fix the support rod inside the support frame. Depending on the application, one end of the support rod is aligned with a fixing block inside the support frame. The locking rod moves the locking block, engaging the support rod in the mounting groove of the fixing block. Under the reset action of the compression spring, the locking block and locking notch engage, thus stably installing the support rod inside the support frame. The support rod provides stable multi-point support to the support frame, increasing its overall stability and ensuring it can withstand overhead pressure and lateral forces in complex mine environments, thus guaranteeing support safety.

[0021] 3. Through the pivot connection structure between the fixed baffle and the movable baffle, and in conjunction with the elastic deformation of the movable rod and the tension spring, when gravel falls and impacts the movable baffle, the movable baffle can rotate and compress the movable rod, causing the tension spring to stretch and generate buffering force, effectively weakening the impact force of the gravel and preventing the gravel from directly and violently impacting the support frame and causing damage. At the same time, the buffer pad on the outside of the support frame can form a secondary buffer for the sliding gravel, further improving the protective effect and solving the problem that traditional protective frames lack a buffer structure and are easily damaged by impact.

[0022] 4. The mechanical structure enables efficient assembly and disassembly, making operation simple and quick. It also allows for flexible adjustment of the support structure according to actual needs, improving the applicability and maintenance efficiency of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0024] Figure 2 This is a partial top view of the baffle fixing bracket of this utility model.

[0025] Figure 3 This is a cross-sectional structural diagram of the fixing block of this utility model.

[0026] Figure 4 This is a schematic diagram of the installation structure of the movable rod of this utility model.

[0027] In the diagram: 1. Mine shaft; 2. Fixed anchor bolt; 3. Support frame; 4. Baffle fixing frame; 5. Buffer pad; 6. Movable baffle; 7. Movable rod; 8. Tension spring; 9. Fixing block; 10. Support rod; 11. Support block; 12. Locking rod; 13. Locking block; 14. Compression spring; 15. Ball bearing; 16. Top rod. Detailed Implementation

[0028] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0029] A safety guard with a gravel buffer structure, such as Figures 1-4As shown: This includes a support frame 3 installed inside the mine shaft 1 with a gap between it and the shaft 1. Multiple sets of support frames 3 are arranged in parallel. The support frames 3 are fixedly connected to the mine shaft 1 by fixed anchor rods 2. A buffer pad 5 is laid on the outer surface of the support frame 3, naturally laid out. The buffer pad 5 is made of rubber. A buffer assembly is provided between two adjacent fixed anchor rods 2. The buffer assembly includes a baffle fixing frame 4 installed on the outer surface of the support frame 3. Crushed stones do not fall directly onto the support frame 3, but rather onto movable baffles 6. Five sets of baffle fixing frames are evenly arranged on each support frame 3. The frame 4 has two adjacent baffle fixing frames 4 with equal distance between them. Movable baffles 6 are rotatably provided on both sides of the fixing frame. The four corners of the bottom surface of the movable baffles 6 are supported by movable rods 7 that are mounted on the support frame 3. There are four movable rods 7 under each movable baffle 6. The lower end of the movable rod 7 is fitted with a tension spring 8. The two ends of the tension spring 8 are respectively fixed to the inner side of the support frame 3 and the lower end of the movable rod 7. A fixing block 9 is installed on the inner side of the support frame 3. A support rod 10 is inserted into one side of the fixing block 9. The lower end of the support rod 10 is installed in the support block 11 fixed on the ground of the mine shaft 1.

[0030] The fixing block 9 is welded to the inner surface of the support frame 3. The fixing block 9 has an installation groove inside, and there are notches on both sides of the installation groove.

[0031] Inside the support rod 10, a locking rod 12 is installed via a fixed shaft. One end of the locking rod 12 is fitted with a locking block 13 that extends out of the support rod 10. The locking block 13 extends out of the support rod 10 and engages with the locking notch. A compression spring 14 is provided on the back side of the support rod 10 located on the locking block 13. A push rod 16 is inserted into the support rod 10 and abuts against the rod surface of the locking rod 12. A ball bearing 15 is provided at the end of the push rod 16 that contacts the locking rod 12. The ball bearing 15 is movably locked onto the end face of the push rod 16. The end of the push rod 16 located on the locking rod 12 where the locking block 13 is installed is also provided.

[0032] Furthermore, there are two locking levers 12, and a compression spring 14 is provided between the opposite faces of the two locking levers 12. Each locking lever 12 has its own locking block 13 on its opposite side. The side of the locking levers 12 that is far apart from each other abuts against the ball bearing 15.

[0033] During installation, press the push rod 16 inward, causing it to press the locking rod 12 inward. The locking rod 12 rotates around its axis. As the locking rod 12 rotates, the ball bearing 15 moves along the surface of the locking rod 12, and the locking block 13 retracts into the support rod 10. Insert the support rod 10 into the mounting slot of the fixing block 9, release the push rod 16, and the locking block 13 engages with the locking notch to achieve quick installation of the support rod 10. Conversely, quick removal of the support rod 10 can be achieved by moving the push rod 16 inward.

[0034] In use, when gravel falls inside the mine shaft 1, it does not directly impact the support frame 3. Instead, it first contacts the movable baffle 6, generating an impact force. After being impacted, the movable baffle 6 rotates around its rotating connection with the baffle fixing frame 4, simultaneously exerting a downward squeezing force on the four movable rods 7 at the four corners of its bottom surface. After being squeezed, the movable rods 7 move downwards along the insertion direction, stretching the tension springs 8 fitted at their lower ends. The elastic deformation of the tension springs 8 generates a reverse buffering force, effectively weakening the impact kinetic energy of the gravel and preventing it from causing a violent impact on the support frame 3.

[0035] Subsequently, the gravel slides down along the movable baffle 6. Even if some of it passes through the gaps in the movable baffle 6 and enters the outside of the support frame 3, the buffer pad 5 laid on the outer surface of the support frame 3 will come into contact with the gravel for secondary buffering, further reducing the impact force of the gravel on the support frame 3, and it will slide down along the arc of the surface of the support frame 3 at any time.

[0036] The fixing block 9 on the inner side of the support frame 3 is in a fixed plug-in state with the support rod 10. The lower end of the support rod 10 is firmly supported on the ground of the mine tunnel 1 by the support block 11, providing stable support for the entire support frame 3 and ensuring that the structure of the support frame 3 remains stable when the buffer component is subjected to the impact of gravel.

[0037] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A safety protection frame with a gravel buffer structure, characterized in that: The system includes a support frame (3) installed inside the mine shaft (1) with a gap between it and the mine shaft (1). The support frame (3) is fixedly connected to the mine shaft (1) by fixed anchor rods (2). A buffer assembly is provided between two adjacent fixed anchor rods (2). The buffer assembly includes a baffle fixing frame (4) installed on the outer surface of the support frame (3). Movable baffles (6) are rotatably provided on both sides of the fixing frame. The bottom corners of the movable baffles (6) are supported by movable rods (7) that are mounted on the support frame (3). The lower end of the movable rod (7) is fitted with a tension spring (8). The two ends of the tension spring (8) are respectively fixed to the inner side of the support frame (3) and the lower end of the movable rod (7). A fixing block (9) is installed on the inner side of the support frame (3). A support rod (10) is inserted into one side of the fixing block (9). The lower end of the support rod (10) is installed in a support block (11) fixed on the ground of the mine shaft (1).

2. The safety protection frame with a gravel buffer structure according to claim 1, characterized in that: The fixing block (9) is welded to the inner surface of the support frame (3). The fixing block (9) has an installation groove inside, and there are notches on both sides of the installation groove. Inside the support rod (10), a locking rod (12) is installed via a fixed shaft. One end of the locking rod (12) is fitted with a locking block (13) that extends out of the support rod (10). The locking block (13) extends out of the support rod (10) and engages with the locking notch. A compression spring (14) is provided on the back side of the support rod (10) located on the locking block (13). A top rod (16) is inserted into the support rod (10) and abuts against the rod surface of the locking rod (12). The top rod (16) is located at the end of the locking rod (12) where the locking block (13) is installed.

3. A safety protection frame with a gravel buffer structure according to claim 2, characterized in that: The top rod (16) is provided with a ball bearing (15) at the end that contacts the locking rod (12), and the ball bearing (15) is movably locked on the end face of the top rod (16).

4. A safety protection frame with a gravel buffer structure according to claim 1, characterized in that: The outer surface of the support frame (3) is covered with a cushioning pad (5), which is made of rubber.

5. A safety protection frame with a gravel buffer structure according to claim 3, characterized in that: Two levers (12) are provided, and a compression spring (14) is provided between the opposite faces of the two levers (12). Each lever (12) has its own locking block (13) on its opposite side. The side of the levers (12) that is far apart from each other abuts against the ball (15).

6. A safety protection frame with a gravel buffer structure according to claim 1, characterized in that: Five sets of baffle fixing frames (4) are evenly provided on each support frame (3).

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