A guard for mine machinery safety

Abstract

The utility model discloses a kind of protective devices for mine machinery safety, including bottom plate, the bottom plate bottom is equipped with ground cone, bottom plate top is provided with lifting locking mechanism, lifting locking mechanism top is fixed with mounting plate, mounting plate one side is provided with buffer mechanism, buffer mechanism one side is equipped with protective plate, protective plate one side is fixed with side plate, guide cylinder is fixed on bottom plate top, lifting column is slidably connected in guide cylinder inner wall, mounting box is fixed on bottom plate outer surface, rack is embedded in lifting column inner wall, connecting block is fixed on guide cylinder outer surface, gear is rotatably connected on the both sides of connecting block inner wall, ratchet wheel is rotatably connected on one side of connecting block, and ratchet wheel and gear are fixedly connected by cross bar. The utility model can flexibly adjust the protection height by lifting locking mechanism, to adapt to the protection needs of different protection targets, and simultaneously, the impact force of device by buffer mechanism and protective plate can be slowed down.

Description

Technical Field

[0001] This utility model relates to the field of mechanical protection technology, and in particular to a protective device for the safety of mining machinery. Background Technology

[0002] In existing technologies, in mining operations, the core function of protective devices to prevent falling rocks from injuring machinery is to build a safety barrier between the machinery and the risk areas of falling rocks above and around it through physical blocking, buffering and stress relief, or structural reinforcement. The purpose is to directly resist the impact of rocks generated by rock collapse, slope slippage, or blasting during mining operations.

[0003] A search revealed a utility model patent with Chinese patent publication number CN222333824U, which discloses a safety protection device for mining machinery, comprising: a protective plate, the protective plate including two plates and a limiting plate, the two plates being rotatably connected by a hinge, and each of the two adjacent sides of the two plates having a limiting groove, the limiting plate being inserted into the two limiting grooves; and two U-shaped plates, each rotatably mounted on the opposite side of the two plates. In this utility model, the cooperation of the plates, limiting plate, U-shaped plates, support frame, support plate, and positioning plate allows the device to be folded and stored, reducing space occupation and facilitating transportation. However, the fixed lengths of the U-shaped plates, support frame, and support plate limit the flexibility of adjusting the protection height according to the target, presenting significant limitations. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a protective device for the safety of mining machinery.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A protective device for the safety of mining machinery includes a base plate, a ground cone installed at the bottom of the base plate, a lifting and locking mechanism provided at the top of the base plate, an installation plate fixed at the top of the lifting and locking mechanism, a buffer mechanism provided on one side of the installation plate, a protective plate installed on one side of the buffer mechanism, and a side plate fixed on one side of the protective plate.

[0006] As a further embodiment of this utility model: the lifting and locking mechanism includes a guide cylinder, a mounting box, a lifting column, a rack, a connecting block, a gear, a ratchet, a pawl, a spring, and a handle, and the guide cylinder is fixed to the top of the base plate.

[0007] As a further embodiment of this utility model: the lifting column is slidably connected to the inner wall of the guide cylinder, the mounting box is fixed to the outer surface of the base plate, the rack is embedded in the inner wall of the lifting column, the connecting block is fixed to the outer surface of the guide cylinder, the gear is rotatably connected to both sides of the inner wall of the connecting block, the ratchet is rotatably connected to one side of the connecting block, and the ratchet and the gear are fixedly connected by a crossbar.

[0008] As a further embodiment of this utility model: the pawl is rotatably connected to one side of the inner wall of the mounting box, and the pawl meshes with the ratchet. One end of the spring is fixedly connected to one side of the pawl, and the other end of the spring is fixedly connected to one side of the inner wall of the mounting box. A track groove is provided on one side of the mounting box. The handle is fixed to one side of the pawl, and the handle slides in cooperation with the inner wall of the track groove. A mounting plate is fixedly connected to the top of the lifting column.

[0009] As a further embodiment of this utility model: the buffer mechanism includes a second mounting box, a T-shaped plate, a guide rail, a slider, a second spring, and a miniature hydraulic rod. The second mounting box is fixed to one side of the mounting plate, and a rectangular groove is provided on one side of the second mounting box.

[0010] As a further embodiment of this utility model: the T-shaped plate is slidably connected to the inner wall of the rectangular groove opened in the second mounting box, a protective plate is fixed on the other side of the T-shaped plate, the guide rail is fixed to one side of the inner wall of the second mounting box, the slider is slidably connected to the outer wall of the guide rail, and the slider is fixedly connected to the T-shaped plate.

[0011] As a further embodiment of this utility model: the second spring is fixed to the bottom of the inner wall of the second mounting box, and the other end of the second spring is fixedly connected to the slider; the micro hydraulic rod is fixed to one side of the second mounting box, and the telescopic end of the micro hydraulic rod is fixedly connected to the bottom of the T-shaped plate.

[0012] Compared with the prior art, this utility model provides a protective device for the safety of mining machinery, which has the following beneficial effects: After the device is moved to the target location, it is fixed with a ground cone. Then, the lifting and locking mechanism is operated according to the protection target. The lifting and locking mechanism causes the mounting plate to move up and down synchronously with the buffer mechanism, protective plate and side plate to form a protection zone. When the target height is reached, the lifting and locking mechanism automatically locks. When the ore falls, the protective plate is released. The protective plate blocks the falling rock. The impact load generated by the falling rock is transferred to the buffer mechanism. The buffer mechanism absorbs some of the energy, weakens the impact intensity, and prevents the load from being directly transferred to the lifting and locking mechanism. Thus, the lifting and locking mechanism can flexibly adjust the protection height to adapt to the protection needs of different protection targets. At the same time, the buffer mechanism and protective plate can reduce the impact force of the crushed stone on the device.

[0013] When the lifting column needs to be raised, pull it upwards to make it rise. At the same time, the rack rises synchronously and drives the gear to rotate around the connection point of the connecting block. Simultaneously, the rotation of the gear drives the ratchet to rotate through the crossbar. As the ratchet rotates, it disengages the pawl, allowing the ratchet to rotate in one direction. When the lifting column reaches the target height, release the lifting column. At this time, under the action of the spring force, the pawl is pulled back into the ratchet's tooth groove, resisting the ratchet's reverse rotation and thus preventing the gear from rotating, thereby locking the rack. When the lifting column needs to be lowered, pull the pawl outwards through the handle, causing the pawl to move along the track groove opened in the mounting box, thus disengaging from the ratchet's tooth groove. At this time, the lifting column will descend by itself under the action of gravity. At the same time, the mounting plate, buffer mechanism, and protective plate will descend synchronously. Thus, the lifting column can be raised and lowered with simple operation, which is suitable for the dim environment in the mine. At the same time, the lifting column can be locked at any position, which can adapt to the protection needs of different protection targets.

[0014] When the gravel impacts the protective plate, the plate transfers the load to the T-shaped plate, causing the T-shaped plate to move the slider along the guide rail. The slider directly compresses the second spring, which absorbs the impact through elastic deformation. As the T-shaped plate moves, its bottom pushes the telescopic end of the miniature hydraulic rod to contract. The hydraulic oil inside the miniature hydraulic rod flows slowly through the throttle orifice, generating damping force, which slows down the movement of the T-shaped plate and further dissipates the impact energy. After the gravel impact ends, the second spring releases its elastic potential energy, pushing the slider and the T-shaped plate to move in the opposite direction. At the same time, the telescopic end of the miniature hydraulic rod extends and, through damping, suppresses the continuous vibration of the second spring due to the release of its elastic potential energy. Thus, in conjunction with the protective plate, the impact load can be effectively reduced, thereby effectively protecting the machinery.

[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0016] Figure 1 This is a front view of a protective device for the safety of mining machinery proposed in this utility model; Figure 2 This is a schematic diagram of the lifting and locking mechanism of a protective device for the safety of mining machinery proposed in this utility model; Figure 3 This is a cross-sectional view of a lifting and locking mechanism in a protective device for the safety of mining machinery proposed in this utility model; Figure 4 This is a schematic diagram of the buffer mechanism in a protective device for the safety of mining machinery proposed in this utility model; Figure 5 This is a cross-sectional view of a buffer mechanism in a protective device for the safety of mining machinery proposed in this utility model.

[0017] In the diagram: 1. Ground cone; 2. Base plate; 3. Lifting and locking mechanism; 4. Mounting plate; 5. Protective plate; 6. Buffer mechanism; 7. Side plate; 301. Guide cylinder; 302. Mounting box one; 303. Lifting column; 304. Rack; 305. Connecting block; 306. Gear; 307. Ratchet; 308. Pawl; 309. Spring one; 310. Handle; 601. Mounting box two; 602. T-shaped plate; 603. Guide rail; 604. Slider; 605. Spring two; 606. Miniature hydraulic rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] A protective device for the safety of mining machinery, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes a base plate 2, a ground cone 1 installed at the bottom of the base plate 2, a lifting and locking mechanism 3 provided at the top of the base plate 2, an installation plate 4 fixed at the top of the lifting and locking mechanism 3, a buffer mechanism 6 provided on one side of the installation plate 4, a protective plate 5 installed on one side of the buffer mechanism 6, and a side plate 7 fixed on one side of the protective plate 5.

[0022] After the device is moved to the target location, it is fixed by the ground cone 1. Then, the lifting and locking mechanism 3 is operated according to the protection target. The lifting and locking mechanism 3 causes the mounting plate 4 to move and lift the buffer mechanism 6, the protective plate 5, and the side plate 7 simultaneously to form a protection zone. When the target height is reached, the lifting and locking mechanism 3 automatically locks. When the ore falls, the protective plate 5 is released. The protective plate 5 blocks the falling rock. The impact load generated by the falling rock is transferred to the buffer mechanism 6. The buffer mechanism 6 absorbs some of the energy, weakens the impact intensity, and prevents the load from being directly transferred to the lifting and locking mechanism 3. Thus, the lifting and locking mechanism 3 can flexibly adjust the protection height to adapt to the protection needs of different protection targets. At the same time, the buffer mechanism 6 and the protective plate 5 can reduce the impact force of the crushed stone on the device.

[0023] In order to adjust the height of the lifting column 303, such as Figure 2 and Figure 3 As shown, the lifting and locking mechanism 3 includes a guide cylinder 301, a mounting box 302, a lifting column 303, a rack 304, a connecting block 305, a gear 306, a ratchet 307, a pawl 308, a spring 309, and a handle 310. The guide cylinder 301 is fixed to the top of the base plate 2. The lifting column 303 is slidably connected to the inner wall of the guide cylinder 301. The mounting box 302 is fixed to the outer surface of the base plate 2. The rack 304 is embedded in the inner wall of the lifting column 303. The connecting block 305 is fixed to the outer surface of the guide cylinder 301. The gear 306 is rotatably connected to both sides of the inner wall of the connecting block 305. The ratchet 307 is also connected to the handle 310. 7 is rotatably connected to one side of the connecting block 305, and the ratchet 307 and the gear 306 are fixedly connected by a crossbar. The pawl 308 is rotatably connected to one side of the inner wall of the mounting box 302, and the pawl 308 meshes with the ratchet 307. One end of the spring 309 is fixedly connected to one side of the pawl 308, and the other end of the spring 309 is fixedly connected to one side of the inner wall of the mounting box 302. A track groove is provided on one side of the mounting box 302. The handle 310 is fixed to one side of the pawl 308, and the handle 310 slides in cooperation with the inner wall of the track groove. The top of the lifting column 303 is fixedly connected to the mounting plate 4.

[0024] When it is necessary to raise the lifting column 303, pull the lifting column 303 upward to raise it. At the same time, the rack 304 rises synchronously and drives the gear 306 to rotate around the connection point of the connecting block 305. Simultaneously, the rotation of the gear 306 drives the ratchet 307 to rotate via the crossbar. As the ratchet 307 rotates, it disengages the pawl 308, allowing the ratchet 307 to rotate in one direction. When the lifting column 303 reaches the target height, release the lifting column 303. At this time, under the tension of the spring 309, the pawl 308 is pulled back into the tooth groove of the ratchet 307, resisting the ratchet 307 to reverse. The gear 306 is prevented from rotating, thereby locking the rack 304. When the lifting column 303 needs to be lowered, the pawl 308 is pulled outward by the handle 310, causing the pawl 308 to move along the track groove opened in the mounting box 302, thus disengaging from the tooth groove of the ratchet 307. At this time, the lifting column 303 lowers by itself under the action of gravity. At the same time, the mounting plate 4, the buffer mechanism 6, and the protective plate 5 lower synchronously. Thus, the lifting column 303 can be raised and lowered through simple operation, which is suitable for the dim environment in the mine. At the same time, the lifting column 303 can be locked in any position, which can adapt to the protection needs of different protection targets.

[0025] When the debris falls above the protective plate 5, in order to reduce the impact force, such as Figure 4 and Figure 5 As shown, the buffer mechanism 6 includes a second mounting box 601, a T-shaped plate 602, a guide rail 603, a slider 604, a second spring 605, and a miniature hydraulic rod 606. The second mounting box 601 is fixed to one side of the mounting plate 4, and a rectangular groove is opened on one side of the second mounting box 601. The T-shaped plate 602 is slidably connected to the inner wall of the rectangular groove opened in the second mounting box 601. A protective plate 5 is fixed to the other side of the T-shaped plate 602. The guide rail 603 is fixed to one side of the inner wall of the second mounting box 601. The slider 604 is slidably connected to the outer wall of the guide rail 603, and the slider 604 is fixedly connected to the T-shaped plate 602. The second spring 605 is fixed to the bottom of the inner wall of the second mounting box 601, and the other end of the second spring 605 is fixedly connected to the slider 604. The miniature hydraulic rod 606 is fixed to one side of the second mounting box 601, and the telescopic end of the miniature hydraulic rod 606 is fixedly connected to the bottom of the T-shaped plate 602. The model of the miniature hydraulic rod 606 is DYTF.

[0026] When the gravel impacts the protective plate 5, the protective plate 5 transfers the load to the T-shaped plate 602, causing the T-shaped plate 602 to drive the slider 604 to slide along the guide rail 603. The slider 604 directly compresses the second spring 605. The second spring 605 absorbs the impact through elastic deformation. During the movement of the T-shaped plate 602, its bottom pushes the telescopic end of the micro hydraulic rod 606 to retract. The hydraulic oil inside the micro hydraulic rod 606 flows slowly through the throttle hole, generating damping force, thereby slowing down the movement speed of the T-shaped plate 602 and further dissipating the impact energy. After the gravel impact ends, the second spring 605 releases its elastic potential energy, pushing the slider 604 and the T-shaped plate 602 to move in opposite directions. At the same time, the telescopic end of the micro hydraulic rod 606 extends and, through damping, suppresses the continuous vibration of the second spring 605 due to the release of elastic potential energy. Thus, in conjunction with the protective plate 5, the impact load can be effectively reduced, thereby effectively protecting the machinery.

[0027] Working principle: After the device is transported to the target location, it is fixed by the ground cone 1. Then, the lifting and locking mechanism 3 is operated according to the protection target. The lifting and locking mechanism 3 causes the mounting plate 4 to move synchronously up and down, along with the buffer mechanism 6, the protective plate 5, and the side plate 7, forming a protected area. When the target height is reached, the lifting and locking mechanism 3 automatically locks. When ore falls, the protective plate 5 is released, blocking the falling rock. The impact load generated by the falling rock is transferred to the buffer mechanism 6, which absorbs some of the energy, weakens the impact intensity, and prevents the load from being directly transferred to the lifting and locking mechanism 3. When it is necessary to raise the lifting column 303, pull the lifting column 303 upward to raise it. At the same time, the rack 304 rises synchronously and drives the gear 306 to rotate around the connection point of the connecting block 305. Simultaneously, the rotation of the gear 306 drives the ratchet 307 to rotate through the crossbar. As the ratchet 307 rotates, it disengages the pawl 308, allowing the ratchet 307 to rotate in one direction. When the lifting column 303 reaches the target height, release the lifting column 303. At this time, under the action of the tension of the spring 309... Pulling the pawl 308 back into the tooth groove of the ratchet 307 prevents the ratchet 307 from reversing, thus preventing the gear 306 from rotating and locking the rack 304. When it is necessary to lower the lifting column 303, pull the pawl 308 outward through the handle 310, causing the pawl 308 to move along the track groove opened in the mounting box 302, thereby disengaging from the tooth groove of the ratchet 307. At this time, the lifting column 303 lowers by itself under the action of gravity, and the mounting plate 4, the buffer mechanism 6, and the protective plate 5 lower synchronously. When the gravel impacts the protective plate 5, the protective plate 5 transfers the load to the T-shaped plate 602, causing the T-shaped plate 602 to drive the slider 604 to slide along the guide rail 603. The slider 604 directly compresses the second spring 605. The second spring 605 absorbs the impact through elastic deformation. During the movement of the T-shaped plate 602, its bottom pushes the telescopic end of the micro hydraulic rod 606 to retract. The hydraulic oil inside the micro hydraulic rod 606 flows slowly through the throttle hole to generate damping force, thereby slowing down the movement speed of the T-shaped plate 602 and further dissipating the impact energy. After the gravel impact ends, the second spring 605 releases its elastic potential energy, pushing the slider 604 and the T-shaped plate 602 to move in opposite directions. At the same time, the telescopic end of the micro hydraulic rod 606 extends and, through damping, suppresses the continuous vibration of the second spring 605 due to the release of elastic potential energy.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A protective device for the safety of mining machinery, comprising a base plate (2), characterized in that, The bottom of the base plate (2) is equipped with a ground cone (1), and the top of the base plate (2) is equipped with a lifting and locking mechanism (3). The top of the lifting and locking mechanism (3) is fixed with a mounting plate (4). A buffer mechanism (6) is provided on one side of the mounting plate (4). A protective plate (5) is installed on one side of the buffer mechanism (6). A side plate (7) is fixed on one side of the protective plate (5). The lifting and locking mechanism (3) includes a guide cylinder (301), a mounting box (302), a lifting column (303), a rack (304), a connecting block (305), a gear (306), a ratchet (307), a pawl (308), a spring (309), and a handle (310). The guide cylinder (301) is fixed to the top of the base plate (2), the lifting column (303) is slidably connected to the inner wall of the guide cylinder (301), the mounting box (302) is fixed to the outer surface of the base plate (2), the rack (304) is embedded in the inner wall of the lifting column (303), the connecting block (305) is fixed to the outer surface of the guide cylinder (301), and the gear (306) is rotatably connected to both sides of the inner wall of the connecting block (305). The ratchet (307) is rotatably connected to one side of the connecting block (305), and the ratchet (307) and the gear (306) are fixedly connected by a crossbar. The pawl (308) is rotatably connected to one side of the inner wall of the mounting box (302), and the pawl (308) meshes with the ratchet (307). One end of the spring (309) is fixedly connected to one side of the pawl (308), and the other end of the spring (309) is fixedly connected to one side of the inner wall of the mounting box (302). A track groove is provided on one side of the mounting box (302). The handle (310) is fixed to one side of the pawl (308), and the handle (310) slides in cooperation with the inner wall of the track groove. The top of the lifting column (303) is fixedly connected to the mounting plate (4).

2. The protective device for the safety of mining machinery according to claim 1, characterized in that, The buffer mechanism (6) includes a second mounting box (601), a T-shaped plate (602), a guide rail (603), a slider (604), a second spring (605), and a miniature hydraulic rod (606). The second mounting box (601) is fixed to one side of the mounting plate (4), and a rectangular groove is provided on one side of the second mounting box (601).

3. A protective device for the safety of mining machinery according to claim 2, characterized in that, The T-shaped plate (602) is slidably connected to the inner wall of the rectangular groove opened in the second mounting box (601). A protective plate (5) is fixed on the other side of the T-shaped plate (602). The guide rail (603) is fixed to one side of the inner wall of the second mounting box (601). The slider (604) is slidably connected to the outer wall of the guide rail (603), and the slider (604) is fixedly connected to the T-shaped plate (602).

4. A protective device for the safety of mining machinery according to claim 2, characterized in that, The second spring (605) is fixed to the bottom of the inner wall of the second mounting box (601), and the other end of the second spring (605) is fixedly connected to the slider (604). The micro hydraulic rod (606) is fixed to one side of the second mounting box (601), and the telescopic end of the micro hydraulic rod (606) is fixedly connected to the bottom of the T-shaped plate (602).

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