Pneumatic safety door suitable for safety protection in capital construction period of underground mine

Abstract

The utility model relates to a pneumatic safety door suitable for safety protection in the capital construction period of an underground mine, and belongs to the technical field of safety protection equipment of a vertical shaft lifting system. According to the technical scheme, a safety door supporting frame (2) is installed at the position of a shaft mouth or each horizontal horsehead, a safety door (1) is hung on the safety door supporting frame (2), the two ends of a telescopic air cylinder (4) are connected with the supporting frame (2) and the safety door (1) respectively, and the sensing range of an inductance type proximity switch (8) is matched with the position change of the safety door (1). The device has the advantages of being simple, reliable, convenient to adjust, low in economic investment and high in field practicability.

Description

Technical Field

[0001] The utility model relates to a pneumatic safety door suitable for safety protection during the infrastructure construction period of an underground mine, and belongs to the technical field of safety protection equipment for a shaft hoisting system. Background Art

[0002] During the construction and production of underground mines, in order to ensure the safety of personnel and equipment during the operation of the hoisting system, safety door devices must be installed at the shaft mouth and the horizontal horse head gate area to ensure that personnel, equipment and the shaft are kept at a safe distance during the operation of the hoisting system. In the traditional driving method, production mines generally use hydraulic drive, and infrastructure mines generally use manual push to open and close the safety door. According to the current specifications, the cage hoisting system that mainly hoists ore and waste rock should be equipped with automatic safety doors at the shaft mouth and the middle horse head gates underground, and interlocked with the hoist. Therefore, the traditional manual push method during infrastructure construction no longer meets the basic safety requirements, and the shaft safety door must be powered and automatically opened and closed. The traditional hydraulic drive method requires that each level must be equipped with a separate hydraulic system and power distribution equipment. This type of safety door protection system requires a large capital investment, and it is necessary to build supporting hydraulic and electrical equipment to arrange the chamber. During the infrastructure construction period of underground mines, water dripping and slag falling are common at the horse head gate, and the equipment operating environment is generally harsh. Therefore, traditional hydraulically driven safety door protection devices are generally used during the infrastructure construction period, which have problems such as large equipment investment, high failure rate, and large equipment maintenance workload. Utility Model Content

[0003] The utility model aims to provide a pneumatic safety door suitable for safety protection during the infrastructure construction period of underground mines. According to the size of the horse head door and the required displacement distance of the safety door, the safety door stroke can be flexibly adjusted by selecting telescopic cylinders with different telescopic amounts. The telescopicity of the telescopic cylinder realizes the position change of the safety door, and the safety door stroke is adjusted by selecting the telescopic amount of the telescopic cylinder. During the movement of the safety door, the safety lock with the lifting system is realized by the distance from the inductive proximity switch. The utility model is simple and reliable, easy to adjust, low in economic investment, and has strong on-site practicality, solving the above-mentioned problems existing in the background technology.

[0004] The technical solution of the utility model is: a pneumatic safety door suitable for safety protection during the infrastructure construction period of underground mines, comprising a protective safety door, a safety door support frame, a rotating roller, a telescopic cylinder, an air intake joint, a manual cylinder control reversing valve and an inductive proximity switch, wherein the safety door support frame is installed at the shaft opening or each horizontal horse head door position, and the safety door is hung on the safety door support frame through a rotating roller and is in close contact with the safety door support frame; both ends of the telescopic cylinder are respectively connected to the support frame and the safety door, the air intake joint is installed on the telescopic cylinder, and the telescopic cylinder is connected to the power gas source through the air intake joint and the manual cylinder control reversing valve; the inductive proximity switch is installed on the side of the safety door support frame away from the installation point of the telescopic cylinder, the inductive proximity switch is connected to the signal station and the lifting system, and the sensing range of the inductive proximity switch matches the position change of the protective safety door.

[0005] It also includes connecting pins, through which the telescopic cylinder is respectively connected to the supporting frame and the safety door.

[0006] The telescopic stroke of the telescopic cylinder matches the stroke range required for normal opening and closing of the safety door, and the pressure of the power gas source matches the power required for the action of the telescopic cylinder.

[0007] There are two air inlet joints, which are respectively connected to the manual cylinder control reversing valve through the cylinder exhaust pipe and the cylinder intake pipe.

[0008] The beneficial effects of the utility model are as follows: according to the size of the horse head door and the required displacement distance of the safety door, the safety door stroke can be flexibly adjusted by selecting telescopic cylinders with different telescopic amounts, the telescopicity of the telescopic cylinder realizes the position change of the safety door, and the safety door stroke is adjusted by selecting the telescopic amount of the telescopic cylinder. During the movement of the safety door, the safety locking with the lifting system is realized by the distance from the inductive proximity switch. The utility model is simple and reliable, easy to adjust, has low economic investment, and has strong on-site practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the installation position diagram of the utility model;

[0010] Figure 2 It is a structural schematic diagram of the utility model;

[0011] In the figure: protective safety door 1, safety door support frame 2, rotating roller 3, telescopic cylinder 4, air inlet connector 5, manual cylinder control reversing valve 6, connecting pin 7, inductive proximity switch 8, power air source 9, cylinder exhaust pipe 10, cylinder air inlet pipe 11, horse head door 12. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the implementation cases of the utility model clearer, the technical solution in the implementation cases of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the utility model, rather than all the implementation cases. Based on the implementation cases in the utility model, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.

[0013] A pneumatic safety door suitable for safety protection during the infrastructure construction period of an underground mine, characterized in that it comprises a protective safety door 1, a safety door support frame 2, a rotating roller 3, a telescopic cylinder 4, an air intake joint 5, a manual cylinder control reversing valve 6 and an inductive proximity switch 8, wherein the safety door support frame 2 is installed at the shaft opening or each horizontal horse head door position, and the safety door 1 is suspended on the safety door support frame 2 through the rotating roller 3 and is in close contact with the safety door support frame 2; the two ends of the telescopic cylinder 4 are respectively connected to the support frame 2 and the safety door 1, the air intake joint 5 is installed on the telescopic cylinder 4, and the telescopic cylinder 4 is connected to a power gas source 9 through the air intake joint 5 and the manual cylinder control reversing valve 6; the inductive proximity switch 8 is installed on the side of the safety door support frame 2 away from the installation point of the telescopic cylinder 4, the inductive proximity switch 8 is connected to the signal station and the lifting system, and the sensing range of the inductive proximity switch 8 matches the position change of the protective safety door 1.

[0014] It also includes a connecting pin 7, through which the telescopic cylinder 4 is respectively connected to the supporting frame 2 and the safety door 1.

[0015] The telescopic stroke of the telescopic cylinder 4 matches the stroke range required for normal opening and closing of the safety door 1 , and the pressure of the power gas source 9 matches the power required for the telescopic cylinder 4 to move.

[0016] There are two air inlet joints 5, which are connected to the manual cylinder control reversing valve 6 through the cylinder exhaust pipe 10 and the cylinder intake pipe 11 respectively.

[0017] In actual application, during the opening and closing process of the safety door, the safety door 1 is hung on the safety door support frame 2 by rotating the roller 3, and is in close contact with the safety door support frame 2. The telescopic cylinder 4 realizes the extension and contraction of the telescopic rod by changing the air intake direction, thereby driving the safety door 1 to move along the safety door support frame 2. During the movement of the safety door 1, the safety interlock with the lifting system is realized by the distance with the inductive proximity switch 8. Only when the safety door 1 reaches the set distance with the inductive proximity switch 8 can the lifting signal be issued and the lifting equipment can be operated. When the safety door 1 is closed to the set position and the distance with the inductive proximity switch 8 reaches the set parameters, the system determines that the safety door 1 is effectively closed, the lifting signal can be issued normally, and the lifting system can operate normally. When the safety door 1 is opened or the distance with the inductive proximity switch 8 does not reach the set parameters, the system determines that the safety door 1 is open, the lifting signal cannot be issued, and the lifting system is locked for protection.

Claims

1. A pneumatic safety door suitable for safety protection during the construction period of underground mines, characterized by: The invention comprises a protective safety door (1), a safety door support frame (2), a rotating roller (3), a telescopic cylinder (4), an air intake joint (5), a manual cylinder control reversing valve (6) and an inductive proximity switch (8). The safety door support frame (2) is installed at the shaft opening or at each horizontal horse head door position. The safety door (1) is suspended on the safety door support frame (2) through the rotating roller (3) and is in close contact with the safety door support frame (2). The two ends of the telescopic cylinder (4) are respectively connected to the support frame (2) and the safety door (1). The air intake joint (5) is installed on the telescopic cylinder (4). The telescopic cylinder (4) is connected to a power gas source (9) through the air intake joint (5) and the manual cylinder control reversing valve (6). The inductive proximity switch (8) is installed on the side of the safety door support frame (2) away from the installation point of the telescopic cylinder (4). The inductive proximity switch (8) is connected to the signal station and the lifting system. The sensing range of the inductive proximity switch (8) matches the position change of the protective safety door (1).

2. A pneumatic safety door suitable for safety protection during the infrastructure construction period of an underground mine according to claim 1, characterized in that: It also comprises a connecting pin (7), and the telescopic cylinder (4) is respectively connected to the supporting frame (2) and the safety door (1) via the connecting pin (7).

3. The pneumatic safety door suitable for safety protection during the infrastructure construction period of an underground mine according to claim 1 is characterized in that: The telescopic stroke of the telescopic cylinder (4) matches the stroke range required for normal opening and closing of the safety door (1), and the pressure of the power gas source (9) matches the power required for the telescopic cylinder (4) to operate.

4. The pneumatic safety door suitable for safety protection during the infrastructure construction period of an underground mine according to claim 1 is characterized by: There are two air intake joints (5), which are respectively connected to the manual cylinder control reversing valve (6) through the cylinder exhaust pipe (10) and the cylinder intake pipe (11).

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