Safety gate for mine portal

Abstract

The utility model discloses a safety door for mine portal, relate to mine safety equipment technical field. The utility model discloses a rocking platform and two uprights, two the top of upright is connected with the steel beam of portal through channel steel and is linked together, still include a plurality of cross bars and steel wire rope, a plurality of the both ends of cross bar are slidably connected with two the upright, and the front end of rocking platform is installed with connecting rod, and the both ends of connecting rod top surface are rotatably installed with first pulley through rotating part, and the both sides of channel steel top surface are rotatably installed with second pulley through rotating part, and the position of channel steel bottom surface corresponding second pulley is provided with the lifting ring, and one end of steel wire rope is connected on second pulley, and the other end passes first pulley, lifting ring and cross bar of bottom in proper order and is connected with the baulk. The utility model discloses steel wire rope, pulley, cross bar etc. structure, utilize the movement of rocking platform to realize the automatic lifting of safety door, and the operation is convenient and efficient, and the efficiency of mine operation has been improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of mine safety equipment technology, and in particular to a safety door for mine gates. Background Technology

[0002] In mine hoisting systems, safety doors at the head gates are crucial equipment for ensuring the safe movement of personnel, mine cars, equipment, and materials up and down the mine. Currently, safety doors at the head gates in various intermediate sections of the auxiliary shaft hoisting system generally suffer from low automation and poor safety reliability. Some safety doors rely on manual operation, and the loading and unloading process for mine cars in the cage is cumbersome, resulting in prolonged opening and closing times for the safety doors, which significantly impacts safety and production efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a solution to the problems of inconvenient operation and time-consuming and labor-intensive manual operation of existing mine safety doors.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A safety door for a mine gate includes a rocking platform and two columns. The tops of the two columns are connected to the steel beam of the gate via channel steel. The door also includes several crossbars and a wire rope. Each of the crossbars has a guide lug at both ends, and the crossbar is slidably connected to the two columns via the guide lugs. A connecting rod is installed at the front end of the rocking platform. First pulleys are rotatably installed at both ends of the top surface of the connecting rod via rotating components. Second pulleys are rotatably installed on both sides of the top surface of the channel steel via rotating components. A lifting ring is provided on the bottom surface of the channel steel corresponding to the position of the second pulley. One end of the wire rope is connected to the second pulley, and the other end is wound around the first pulley and passes through the lifting ring. After passing through the lifting ring, the wire rope passes through the crossbars in sequence. After passing through the bottom crossbar, the wire rope is connected to a stop block. The wire rope is slidably connected to the crossbars.

[0005] A nylon sleeve is installed at the connection point between the crossbar and the wire rope, and the wire rope is slidably installed inside the nylon sleeve.

[0006] Two chains are installed at the bottom of the channel steel, and the crossbars are connected by chains.

[0007] The rotating component includes two positioning side plates, which are arranged opposite each other. A main shaft is installed between the two positioning side plates. The two ends of the main shaft pass through the corresponding positioning side plates and are then fastened together by positioning nuts. A first pulley or a second pulley is rotatably installed on the main shaft between the two positioning side plates.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This utility model utilizes a structure consisting of wire rope, pulleys, and crossbars to automatically raise and lower the safety door using the movement of a rocking platform. This makes operation convenient and efficient, greatly improving the efficiency of mine operations.

[0009] Furthermore, the sliding connection between the crossbars and the columns, as well as the chain connection between each crossbar, enhances the overall stability of the safety door structure, reduces swaying and misalignment during operation, effectively lowers safety risks, and improves the safety of mine operations. The nylon sleeve reduces friction between the wire rope and the crossbar, extends the service life of the wire rope, reduces equipment maintenance costs and replacement frequency, and has good economic benefits. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the safety door of this utility model when closed; Figure 2 A schematic diagram of the structure of the safety door of this utility model when it is open; Figure 3 This is a schematic diagram of the rotating component in this utility model.

[0011] In the picture: 1. Shaking platform; 2. Column; 3. Channel steel; 4. Crossbar; 5. Steel wire rope; 6. Guide lug; 7. Connecting rod; 8. First pulley; 9. Second pulley; 10. Stop block; 11. Nylon sleeve; 12. Chain; 13. Positioning side plate; 14. Lifting ring; 15. Main shaft; 16. Positioning nut; 17. Overlapping claw. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0013] A safety door for mine shaft gates includes a rocker platform 1 and two uprights 2. The tops of the two uprights 2 are connected to the steel beams of the shaft gate via channel steel 3. The door also includes several crossbars 4 and steel wire ropes. Each of the crossbars 4 has guide lugs 6 at both ends. The crossbars are slidably connected to the two uprights 2 via the guide lugs 6 at both ends, ensuring smooth sliding of the crossbars 4 on the uprights 2. A connecting rod 7 is installed at the front end of the rocking platform 1. First pulleys 8 are rotatably installed at both ends of the top surface of the connecting rod 7 via rotating components. Second pulleys 9 are rotatably installed on both sides of the top surface of the channel steel 3 via rotating components. A lifting ring 14 is provided on the bottom surface of the channel steel 3 corresponding to the position of the second pulley 9. One end of the wire rope is connected to the second pulley 9, and the other end is wound around the first pulley 8 and then passes through the lifting ring 14. After passing through the lifting ring 14, the wire rope passes through the crossbar 4 in sequence. After passing through the bottommost crossbar 4, the wire rope is connected to a stop block 10. The wire rope and the crossbar 4 are slidably connected. Through this structural design, the movement of the rocking platform 1 can effectively drive the crossbar 4 to rise and fall, realizing the opening and closing of the safety door. A nylon sleeve 11 is installed at the connection point between the crossbar 4 and the wire rope, and the wire rope is slidably installed inside the nylon sleeve 11. The nylon sleeve 11 can effectively reduce the friction between the wire rope and the crossbar 4, reduce the wear of the wire rope, extend the service life of the wire rope, and also make the operation of the safety gate smoother. Two chains 12 are installed at the bottom of the channel steel 3, and the crossbars 4 are connected by the chains 12. The connection of the chains 12 enables the crossbars 4 to move in coordination, which enhances the stability of the overall structure of the safety door and avoids problems such as misalignment and swaying of the crossbars 4 during the lifting and lowering process. The rotating component includes two positioning side plates 13, which are arranged opposite each other. A main shaft 15 is installed between the two positioning side plates 13. The two ends of the main shaft 15 pass through the corresponding positioning side plates 13 and are then fastened together by positioning nuts 16. A first pulley 8 or a second pulley 9 is rotatably mounted on the main shaft 15 between the two positioning side plates 13. This rotating component has a simple structure, is easy to install, and can ensure that the pulleys rotate flexibly, ensuring smooth transmission of the wire rope.

[0014] The main function of the rocking platform 1 in the mine is to serve as a transition platform connecting the cage and the track, ensuring the smooth and safe entry and exit of the mine car from the cage. One end of the platform is rotatably connected to the ground, while the other end is a free end. It is equipped with overlapping claws 17, which are used to engage with the overlapping claws 17 connecting the cage. The height can be adjusted to suit the stopping position of the cage. When the overlapping claws 17 are in contact with the overlapping blocks of the cage, When the lap claw 17 of the rocking platform 1 is in contact with the cage lap block, the rocking platform 1 is in a lowered state, causing its free end to move downwards. With the help of the first pulley 8 on the front connecting rod 7 of the rocking platform 1, the second pulley 9 on the channel steel 3, and the lifting ring 14, the steel wire rope on it is pulled, causing several crossbars 4 to move upwards, thus opening the safety door. When it is necessary to close the safety door, the rocking platform 1 is pulled upwards, causing its free end to rise. Under the action of gravity, the crossbars 4 move downwards under the traction of the steel wire rope, thus closing the safety door. Throughout the process, the nylon sleeve 11 reduces friction between the steel wire rope and the crossbars 4, the chain 12 ensures the coordinated movement of the crossbars 4, and the rotating parts ensure the pulleys rotate flexibly, guaranteeing the stable and smooth operation of the safety door.

[0015] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety door for a mine gate, comprising a rocking platform (1) and two uprights (2), wherein the tops of the two uprights (2) are connected to the steel beam of the gate via channel steel (3), characterized in that: It also includes several crossbars (4) and steel wire ropes (5). Each of the crossbars (4) has a guide lug (6) at both ends. The guide lugs (6) at both ends are slidably connected to the two columns (2). A connecting rod (7) is installed at the front end of the rocking platform (1). The top surfaces of the connecting rods (7) are rotatably equipped with first pulleys (8) through rotating components. The top surfaces of the channel steel (3) are rotatably equipped with second pulleys (9) through rotating components. The bottom surfaces of the channel steel (3) are equipped with lifting rings (14) corresponding to the positions of the second pulleys (9). One end of the steel wire rope (5) is connected to the second pulley (9), and the other end is wound around the first pulley (8) and then passes through the lifting ring (14). After passing through the lifting ring (14), the steel wire rope (5) passes through the crossbars (4) in sequence. After passing through the bottom crossbar (4), the steel wire rope (5) is connected to a stop block (10). The steel wire rope (5) and the crossbar (4) are slidably connected.

2. A safety door for mine shaft gates according to claim 1, characterized in that: A nylon sleeve (11) is installed at the connection point between the crossbar (4) and the wire rope (5), and the wire rope (5) is slidably installed inside the nylon sleeve (11).

3. A safety door for mine shaft gates according to claim 2, characterized in that: Two chains (12) are provided at the bottom of the channel steel (3), and the crossbars (4) are connected by the chains (12).

4. A safety door for mine shaft gates according to claim 3, characterized in that: The rotating component includes a positioning side plate (13), two positioning side plates (13) are arranged opposite each other, and a main shaft (15) is installed between the two positioning side plates (13). The two ends of the main shaft (15) pass through the corresponding positioning side plates (13) and are then fastened by positioning nuts (16). The first pulley (8) or the second pulley (9) is rotatably installed on the main shaft (15) between the two positioning side plates (13).

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