Automatic lifting device of safety door for mine

Abstract

The utility model relates to the technical field of mining production, in particular to an automatic lifting device of a safety door for a mine, and aims to solve the problems that in the opening and closing process of the safety door in front of a mine cradle, the opening and closing of the safety door are time-consuming and labor-consuming due to the general manual operation of personnel; and the passage of operators and the overall efficiency of mining production are finally influenced. Stand columns of the device are installed on a door-shaped frame, a plurality of sliding sleeves are installed on the stand columns, safety door cross rods are installed between the sliding sleeves, guide fixed pulleys are installed at the front ends of the door-shaped frame of the safety door stand columns and a cradle, steel wire ropes are wound around the cross rods and correspond to the guide fixed pulleys, the steel wire ropes are fixed to the door-shaped frame through turnbuckles, and the cross rods are connected through iron chains. The uppermost cross rod is connected to the door-shaped frame through an iron chain, so that the cross rods of the safety door are driven to retract or fall only through rising and falling of the cradle without other auxiliary equipment, and the overall passing efficiency of the mine safety door is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of mining production technology, specifically to an automatic lifting and lowering device for mine safety doors. Background Technology

[0002] A rocking platform is a type of lifting and lowering cage receiving device commonly used at mine entrances, bottoms, and intermediate girder gates. When the cage arrives, the rocking platform lowers to connect with it, and when it rises, it detaches from the cage. The rocking platform becomes the only passage for personnel and mine cars to enter the cage. For safety reasons, safety doors are installed in front of the rocking platform and at the cage exit for protection. However, most safety doors currently in use require manual opening using hydraulic equipment or electro-hydraulic actuators, and require the use of a lot of auxiliary equipment, which greatly affects the overall efficiency of mining production. Utility Model Content

[0003] This invention provides an automatic lifting and lowering device for mine safety doors to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic lifting and lowering device for mine safety doors includes a rocking platform, a safety door column frame on the side of the rocking platform, columns symmetrically fixed on the side wall of the safety door column frame, and multiple safety door crossbars sliding horizontally on the columns. A first iron chain connects the top of the safety door crossbars to the safety door column frame, and a steel wire rope is wound between the safety door crossbars and the rocking platform.

[0006] Furthermore, the bottom two sides of the safety door column frame are fixedly provided with fixed seats, the column is set on the top of the fixed seat, and multiple sliding sleeves are slidably sleeved on the outer wall of the column, and the safety door crossbar is connected to the sliding sleeves.

[0007] Furthermore, a second iron chain is connected between each of the multiple safety gate crossbars.

[0008] Furthermore, each of the multiple safety gate crossbars has a rope-threading hole on its side wall, and the steel wire rope passes through the rope-threading hole.

[0009] Furthermore, the top of the safety gate support frame is fixedly provided with multiple first fixed pulleys, and the two sides of the rocking platform are fixedly provided with multiple second fixed pulleys, and the wire rope is wound around the first fixed pulleys and the second fixed pulleys.

[0010] Furthermore, the top side of the safety gate support frame is provided with multiple connecting seats, each of which is connected with a turnbuckle, and the turnbuckle is also connected to the wire rope.

[0011] This utility model has the following beneficial effects:

[0012] This utility model provides an automatic lifting and lowering device for mine safety doors. A column is installed on a portal frame, with multiple sliding sleeves on the column. Safety door crossbars are installed between the sliding sleeves. Guide pulleys are installed at the top of the safety door column and portal frame, and another guide pulley is installed at the front end of the rocking platform. Steel wire ropes are wound around the guide pulleys on the safety door crossbars. One end of the steel wire rope is fixed to the portal frame via a turnbuckle on the left, and the other end is fixed to the portal frame via a turnbuckle on the right. All crossbars are connected by chains, with the top crossbar connected to the portal frame by a chain. This effectively achieves the raising or lowering of the safety door crossbars without the need for other auxiliary equipment, solely through the lifting and lowering of the rocking platform. This significantly improves the overall passage efficiency of mine safety doors and solves the problem that currently, the opening and closing of safety doors in front of the rocking platform in mines is often done manually, resulting in time-consuming and labor-intensive operation, ultimately affecting the passage of workers and the overall efficiency of mining production.

[0013] This invention links the safety gate crossbar with a rocking platform using a steel wire rope. The rise and fall of the rocking platform drives the safety gate crossbar to rise and fall, without requiring any other auxiliary equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model in dynamic lifting and lowering mode.

[0016] Figure 3 This is an overall schematic diagram of the sliding sleeve structure of this utility model.

[0017] The meanings of the reference numerals in the attached figures are as follows:

[0018] 1. Shaking platform; 2. Safety gate upright frame; 3. Upright; 4. Fixed seat; 5. Sliding sleeve; 6. Safety gate crossbar; 7. First iron chain; 8. Second iron chain; 9. First fixed pulley; 10. Steel wire rope; 11. Turnbuckle; 12. Rope hole; 13. Connecting seat; 14. Second fixed pulley. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-3As shown, an automatic lifting and lowering device for mine safety doors includes a rocking platform 1. A safety door support frame 2 is provided on the side of the rocking platform 1. Columns 3 are symmetrically fixed on the side wall of the safety door support frame 2. Multiple safety door crossbars 6 are slidably and horizontally arranged on the columns 3. A first iron chain 7 connects the top of the safety door crossbars 6 and the safety door support frame 2. A steel wire rope 10 is wound between the safety door crossbars 6 and the rocking platform 1.

[0021] The bottom sides of the safety gate support frame 2 are fixedly provided with fixed seats 4, the support column 3 is set on the top of the fixed seat 4, and multiple sliding sleeves 5 are slidably sleeved on the outer wall of the support column 3, and the safety gate crossbar 6 is connected to the sliding sleeves 5.

[0022] A second iron chain 8 connects all the multiple safety gate crossbars 6.

[0023] Multiple safety gate crossbars 6 have rope holes 12 on their side walls, and the steel wire ropes 10 are installed through the rope holes 12.

[0024] Multiple first fixed pulleys 9 are fixedly provided on the top of the safety gate upright frame 2, and multiple second fixed pulleys 14 are fixedly provided on both sides of the rocking platform 1. The steel wire rope 10 is wound around the first fixed pulleys 9 and the second fixed pulleys 14.

[0025] The top side of the safety gate upright frame 2 is provided with multiple connecting seats 13, each of which is connected with a turnbuckle 11, and the turnbuckle 11 is also connected to the wire rope 10.

[0026] In practical use, the safety gate upright 3 is installed on the safety gate upright frame 2. The safety gate upright 3 has eight sliding sleeves 5, four on each side. Safety gate crossbars 6 are installed between the corresponding left and right sliding sleeves 5. Two first fixed pulleys 9 are installed at appropriate positions on the left and right sides of the top of the safety gate upright frame 2, and two second fixed pulleys 14 are installed at the front end of the rocker platform 1. Rope holes 12 are opened on the safety gate crossbars 6 corresponding to the positions of the first fixed pulleys 9. Steel wire ropes 10 pass through the rope holes 12 and are threaded through the four safety gate crossbars 6. One end of the steel wire rope 10 is fixed to the safety gate upright frame 2 by a left-side turnbuckle 11, and the other end is fixed to the safety gate upright frame 2 by a right-side turnbuckle 11. The two ends of each safety gate crossbar 6 are connected by a second iron chain 8. The uppermost safety gate crossbar... The rod 6 is connected to the safety gate upright frame 2 by the first iron chain 7. When the rocking platform 1 is raised, the safety gate falls under its own weight. When the rocking platform 1 falls, it drives the steel wire rope 10, which drives the safety gate to rise through the first fixed pulley 9 and the second fixed pulley 14, ensuring the safe passage of personnel. This device drives the safety gate crossbar 6 to rise or fall through the rise and fall of the rocking platform 1, realizing the automatic rise and fall of the safety gate by the action of the rocking platform 1 without the need for other auxiliary equipment. At the same time, turnbuckles 11 are connected to the steel wire rope 10 to fix the steel wire rope 10 and adjust its tension. The first iron chain 7 is used to suspend the safety gate crossbar 6, and the second iron chain 8 is used to connect each safety gate crossbar 6 and adjust their spacing. Therefore, this device has good practicality.

Claims

1. An automatic lifting and lowering device for safety doors in mines, comprising a rocking platform (1), a safety door column frame (2) provided on the side of the rocking platform (1), columns (3) symmetrically fixed on the side wall of the safety door column frame (2), and multiple safety door crossbars (6) slidably and horizontally provided on the columns (3), characterized in that: A first iron chain (7) is connected between the top of the safety gate crossbar (6) and the safety gate column frame (2), and a steel wire rope (10) is wound between the safety gate crossbar (6) and the rocking platform (1).

2. The automatic lifting and lowering device for mine safety doors according to claim 1, characterized in that: The bottom sides of the safety door column frame (2) are fixedly provided with fixed seats (4), the column (3) is set on the top of the fixed seat (4), and multiple sliding sleeves (5) are slidably sleeved on the outer wall of the column (3), and the safety door crossbar (6) is connected to the sliding sleeves (5).

3. The automatic lifting and lowering device for mine safety doors according to claim 2, characterized in that: A second chain (8) is connected between each of the multiple safety gate crossbars (6).

4. The automatic lifting and lowering device for mine safety doors according to claim 3, characterized in that: The side walls of the multiple safety gate crossbars (6) are provided with rope holes (12), and the steel wire rope (10) is installed through the rope holes (12).

5. The automatic lifting and lowering device for mine safety doors according to claim 2, characterized in that: The top of the safety gate support frame (2) is fixed with multiple first fixed pulleys (9), and the two sides of the rocking platform (1) are fixed with multiple second fixed pulleys (14). The wire rope (10) is wound around the first fixed pulleys (9) and the second fixed pulleys (14).

6. The automatic lifting and lowering device for mine safety doors according to claim 5, characterized in that: The top side of the safety gate support frame (2) is provided with multiple connecting seats (13), each of which is connected with a turnbuckle (11), and the turnbuckle (11) is also connected to the wire rope (10).

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