Electric lifting type safety door of mine cage

Abstract

The utility model discloses a mining cage electric lifting type safety door which comprises a bottom plate frame, and a driving assembly is arranged at the top end of the bottom plate frame. The driving assembly comprises a main shaft rotationally connected with the interior of the bottom plate frame, a meshing gear and first chain wheels are arranged on the main shaft, the first chain wheels are located on the two sides of the meshing gear, one end of the meshing gear is in meshing connection with a driving gear, one side of the driving gear is connected with a speed reducer, and one side of the speed reducer is connected with a motor. Second chain wheels are rotationally connected to the inner sides of the mounting frames, chains are connected to the outer walls of the second chain wheels and the first chain wheels in an engaged mode, and cross rod assemblies are connected to the outer walls of the chains. The cross rod assembly comprises an intercepting rod which is located on the inner side of the bottom plate frame. According to the device, safety protection can be carried out on the entrance and exit of the cage, personnel, vehicles or materials in the cage are prevented from falling into a shaft when workers use the cage, and the safety of using the cage is improved.

Description

Technical Field

[0001] This utility model relates to the field of mine safety technology, specifically to an electric lifting safety door for mine cages. Background Technology

[0002] Mine safety is an extremely important part of mining production, involving the life safety and health of personnel as well as the stable operation of production. In mine production, a cage is a container specially designed for mine shaft hoisting systems, mainly used to transport miners, ore, equipment and materials up and down the mine.

[0003] Because there is a gap between the cage and the wellhead, there is a risk that personnel, vehicles or materials may fall into the well during the cage lifting process. In order to prevent such accidents, safety protection devices need to be installed at the wellhead to effectively isolate the gap between the wellhead and the cage. Cage lifting safety doors have emerged to meet this need. Utility Model Content

[0004] The purpose of this utility model is to provide an electric lifting safety door for mining cages to solve the problem mentioned in the background art that personnel and vehicles inside the cages are prone to falling into the shaft during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric lifting safety door for mining cages, including a base frame, wherein a drive assembly is provided at the top of the base frame;

[0006] The drive assembly includes a main shaft rotatably connected to the inside of the base plate frame. The main shaft is equipped with a meshing gear and a first sprocket. The first sprocket is located on both sides of the meshing gear. One end of the meshing gear is meshed with a drive gear. A reducer is connected to one side of the drive gear, and a motor is connected to one side of the reducer. A mounting bracket is fixedly connected to the bottom side of the base plate frame. A second sprocket is rotatably connected to the inside of the mounting bracket. A chain is meshed with the outer walls of the second sprocket and the first sprocket. A crossbar assembly is connected to the outer wall of the chain.

[0007] The crossbar assembly includes an interceptor bar located inside the base plate frame.

[0008] Preferably, a vertical guide shaft is fixedly connected to the inner wall of the base plate frame. The vertical guide shaft is symmetrically distributed about the bisector of the base plate frame and is located inside the chain.

[0009] Preferably, the crossbar assembly is provided in multiple sets, and each set of crossbar assemblies has multiple crossbar assemblies distributed longitudinally at equal intervals about the chain surface.

[0010] Preferably, the two sides of the interceptor are respectively threaded with a first connecting rod and a second connecting rod, and both the first connecting rod and the second connecting rod are sleeved on the chain.

[0011] Preferably, the chain is provided with a positioning component;

[0012] The positioning component includes a positioning block sleeved on the outer wall of the chain, the positioning block being located on the bottom side of the crossbar assembly, and a positioning rod inserted into the positioning block, one end of which passes through the positioning block and connects to the chain.

[0013] Preferably, the top and sides of the base plate frame are respectively provided with a top cover and a side cover, both of which are "L" shaped structures.

[0014] Preferably, a motor is fixedly connected to the inner wall of the top of the base plate frame, and fixed mounting bases are fixedly connected to both ends of the base plate frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) This device can provide safety protection for the inlet and outlet of the cage, preventing personnel, vehicles or materials inside the cage from falling into the shaft when the staff use the cage, thereby improving the safety of using the cage.

[0017] (2) This device sets up automatically rotating chains on both sides of the inner wall of the base plate frame. By connecting the first connecting rod and the second connecting rod on both sides of the intercepting rod to the chain, the first connecting rod, the second connecting rod and the intercepting rod can be raised and lowered during the rotation of the chain. When the first connecting rod, the second connecting rod and the intercepting rod are lowered, they can be used to intercept and protect personnel, vehicles and materials, thereby improving the safety of using the cage.

[0018] (3) This device has a motor, a reducer and a main shaft installed on the top of the base plate frame. The main shaft can drive the chains on both sides of the base plate frame to run at the same time during the rotation, thereby ensuring the uniformity of the chain movement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an electric lifting safety door for a mining cage according to this utility model;

[0020] Figure 2 This is a cross-sectional view of an electric lifting safety door for a mining cage according to the present invention.

[0021] Figure 3 This utility model relates to an electric lifting safety door for mining cages. Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a side sectional view of the mounting frame for an electric lifting safety door for a mining cage according to this utility model.

[0023] Figure 5 This is a top view of the base plate frame and side cover of an electric lifting safety door for a mining cage according to this utility model.

[0024] In the diagram: 1. Top cover; 2. Base plate frame; 3. Side cover; 4. Crossbar assembly; 41. First connecting rod; 42. Intercepting rod; 43. Second connecting rod; 5. Vertical guide shaft; 6. Fixed mounting base; 7. Drive assembly; 71. Main shaft; 72. First sprocket; 73. Chain; 74. Mounting bracket; 75. Second sprocket; 76. Meshing gear; 77. Drive gear; 78. Motor; 79. Reducer; 8. Positioning assembly; 81. Positioning rod; 82. Positioning block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5This utility model provides a technical solution: an electric lifting safety door for mine cages, including a base frame 2, a drive assembly 7 at the top of the base frame 2, and a vertical guide shaft 5 fixedly connected to the inner wall of the base frame 2. The vertical guide shaft 5 is symmetrically distributed about the bisector of the base frame 2 and is located inside the chain 73. This structure can limit the movement of the crossbar assembly 4 through the vertical guide shaft 5, making the crossbar assembly 4 more stable during lifting. Multiple sets of crossbar assemblies 4 are provided, and multiple crossbar assemblies 4 are evenly distributed longitudinally about the surface of the chain 73. This structure can drive the crossbar assembly 4 to lift and lower as a whole through the rotation of the chain 73. When the crossbar assembly 4 descends, it can intercept and protect the inside of the cage, preventing the mine cars inside the cage from shifting. To prevent accidental fall, the base plate frame 2 is equipped with a top cover 1 and side covers 3 on its top and sides, respectively. Both top covers 1 and side covers 3 are L-shaped structures. This structure protects components such as the chain 73, motor 78, and reducer 79, extending their service life. The motor 78 is fixedly connected to the inner wall of the top of the base plate frame 2, and mounting bases 6 are fixedly connected to both ends of the base plate frame 2. The outer wall of the motor 78 is bolted to the base plate frame 2, ensuring stable installation. The mounting bases 6 can fix the entire base plate frame 2 to the outer wall of the cage inlet. The drive assembly 7 includes a main shaft 71 rotatably connected to the inside of the base plate frame 2. The main shaft 71 is equipped with meshing gears 76 and... The first sprocket 72 is located on both sides of the meshing gear 76. One end of the meshing gear 76 is meshed with a drive gear 77. A reducer 79 is connected to one side of the drive gear 77, and a motor 78 is connected to one side of the reducer 79. A mounting bracket 74 is fixedly connected to the bottom side of the base plate 2. A second sprocket 75 is rotatably connected to the inner side of the mounting bracket 74. A chain 73 is meshed with the outer wall of the second sprocket 75 and the first sprocket 72. A crossbar assembly 4 is connected to the outer wall of the chain 73. The crossbar assembly 4 includes an intercepting rod 42. A first connecting rod 41 and a second connecting rod 43 are threaded to both sides of the intercepting rod 42. Both the first connecting rod 41 and the second connecting rod 43 are sleeved on the chain 73. This structure allows the intercepting rod 42 to be rotated, so that the first connecting rod 41 can be rotated. The length between connecting rod 41 and the second connecting rod 43 is adjustable to facilitate the length of the crossbar assembly 4 during installation. A positioning assembly 8 is provided on the chain 73. The positioning assembly 8 includes a positioning block 82 sleeved on the outer wall of the chain 73, located on the bottom side of the crossbar assembly 4. A positioning rod 81 is inserted into the positioning block 82, with one end of the positioning rod 81 passing through the positioning block 82 and connecting to the chain 73. This structure, through the positioning block 82, can limit the movement of the first connecting rod 41 and the second connecting rod 43 on both sides of the crossbar assembly 4. Furthermore, the bottom of the positioning block 82 is also connected to the first connecting rod 41 and the second connecting rod 43 on both sides of the crossbar assembly 4 via another positioning rod 81, thereby allowing the first connecting rod 41 and the second connecting rod 43 on both sides of the crossbar assembly 4 to connect to the chain 73.This allows for the fixing or adjustment of the position of the crossbar assembly 4. The interceptor bar 42 is located inside the base plate frame 2. The motor 78 of this device can drive the shaft of the reducer 79 to rotate the drive gear 77, which in turn drives the meshing gear 76 and the main shaft 71 to rotate. This drives the first sprockets 72 on both sides of the main shaft 71, thereby facilitating the lifting and lowering of the crossbar assembly 4 on the chain 73. When installed, the base plate frame 2 is horizontally and centrally fixed with respect to the cage inlet and outlet. The top and bottom of the vertical guide shaft 5 are connected to the base plate frame 2. One side of the first connecting rod 41 and the second connecting rod 43 is sleeved on the outer wall of the vertical guide shaft 5, while one side of the first connecting rod 41 and the second connecting rod 43 is connected to the front end of the chain 73.

[0027] Working Principle: When using the electric lifting safety door for mining cages, after the cage reaches the designated position, the drive assembly 7 executes the command to open the electric lifting safety door. The drive motor 78 rotates forward, causing the main shaft 71 to rotate through the reducer 79, drive gear 77, and meshing gear 76. During the rotation of the main shaft 71, the first sprockets 72 on both sides drive the chain 73 on the outer wall to rotate. During the movement of the chain 73, the chain 73 and the lowermost group of the crossbar assembly 4 are connected by a positioning rod 81 and a positioning block 82, thereby forcing the crossbar assembly 4 to rise sequentially from bottom to top until the drive assembly 7 executes the command to open the door. The entire process realizes the opening command of the electric lifting safety door. Conversely, the drive assembly 7 executes the command to close the electric lifting safety door, and the drive motor 78 rotates in the reverse direction until the drive assembly 7 executes the command to close the door. The entire process realizes the closing command of the electric lifting safety door.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mine cage electrically operated safety door comprising a floor frame (2) characterised in that: The top end of the bottom frame (2) is provided with a driving assembly (7); The driving assembly (7) comprises a main shaft (71) rotatably connected to the inside of the bottom frame (2), the main shaft (71) is provided with a meshing gear (76) and a first chain wheel (72), the first chain wheel (72) is located on both sides of the meshing gear (76), one end of the meshing gear (76) is engagedly connected with a driving gear (77), one side of the driving gear (77) is connected with a speed reducer (79), one side of the speed reducer (79) is connected with a motor (78), the bottom side of the bottom frame (2) is fixedly connected with a mounting frame (74), the inside of the mounting frame (74) is rotatably connected with a second chain wheel (75), the outer wall of the second chain wheel (75) and the first chain wheel (72) is engagedly connected with a chain (73), the outer wall of the chain (73) is connected with a cross rod assembly (4); The cross rod assembly (4) comprises an intercepting rod (42), and the intercepting rod (42) is located on the inside of the bottom frame (2).

2. A mine cage electrically operated safety door according to claim 1, characterised in that: The inner wall of the bottom frame (2) is fixedly connected with a vertical guide shaft (5), the vertical guide shaft (5) is symmetrically distributed about the bisector of the bottom frame (2), and the vertical guide shaft (5) is located on the inside of the chain (73).

3. A mine cage electrically operated safety door according to claim 1, characterised in that: Each group of the cross rod assembly (4) is longitudinally and equidistantly distributed on the surface of the chain (73).

4. A mine cage electrically operated safety door according to claim 1, characterised in that: The two sides of the intercepting rod (42) are respectively threadedly connected with a first connecting rod (41) and a second connecting rod (43), and the first connecting rod (41) and the second connecting rod (43) are sleeved on the chain (73).

5. A mine cage electrically operated safety door according to claim 1, characterised in that: The chain (73) is provided with a positioning assembly (8); The positioning assembly (8) comprises a positioning block (82) sleeved on the outer wall of the chain (73), the positioning block (82) is located on the bottom side of the cross rod assembly (4), a positioning rod (81) is inserted into the positioning block (82), and one end of the positioning rod (81) penetrates through the positioning block (82) and is connected with the chain (73).

6. A mine cage electrically operated safety door according to claim 1, characterised in that: The top end and the two sides of the bottom frame (2) are respectively provided with a top cover (1) and a side cover (3), and the top cover (1) and the side cover (3) are both "L"-shaped structures.

7. A mine cage electrically operated safety door according to claim 1, characterised in that: The top inner wall of the bottom frame (2) is fixedly connected with the motor (78), and the two ends of the bottom frame (2) are fixedly connected with fixed mounting seats (6).

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