Door opening power-off mechanism for mining flame-proof shell

Abstract

The utility model relates to a door-opening power-off mechanism for a mining explosion-proof type shell, which comprises a screw rod in threaded connection with the shell and a rotating shaft in shaft connection with the shell, the end part of the rotating shaft is connected with a switch knob, a front door is provided with an insertion hole matched with the front end of the screw rod, the side surface of the rotating shaft is provided with a locking hole matched with the rear end of the screw rod, and the locking hole is matched with the rear end of the screw rod. A handle is fixedly connected to the rotating shaft, and when equipment is overhauled, the switch knob is powered off by rotating the handle. The front end of the screw rod is pulled out from the jack of the front door by rotating the screw rod, and the rear end is inserted into the locking hole of the rotating shaft, so that the switch knob and the handle cannot be rotated, the equipment cannot supply power, and the maintenance safety is ensured. The front door is opened, and the equipment is overhauled. After maintenance is completed, the front door is closed, the front end of the screw rod is inserted into the insertion hole of the front door and pulled out of the locking hole, the handle is rotated anticlockwise, the rotary knob is driven to rotate, equipment is powered on, normal work is recovered, and the device is simple in structure, accurate and reliable in movement, small in occupied shell space and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to a switch cabinet technical field, specifically for the door opening power off mechanism for mine explosion -proof type shell. BACKGROUND

[0002] In the environment of coal mine underground and its surrounding medium having explosive mixed gas such as methane, coal dust, the safety of the power supply system of coal mine becomes more and more important. The environment used determines that the type equipment has safe and reliable mechanism to ensure the safe operation of the equipment.

[0003] The mine explosion -proof equipment shell is arranged in the coal mine underground, and there is explosive mixed gas such as methane, coal dust in the coal mine underground and its surrounding medium, the front door is installed at the front of the shell, the door opening mode is translational quick -opening door, when the front door is opened to overhaul the internal electrical elements of the shell, it is necessary to ensure that the internal total switch knob remains in the power -off state, only after the front door is closed, the switch knob can be connected.

[0004] In order to ensure the emergency power supply of the equipment and the normal operation of the equipment, the novel mechanism is increased. INVENTION CONTENTS

[0005] The utility model provides a door opening power off mechanism for mine explosion -proof type shell in view of the deficiency of prior art, ensures the emergency power supply of equipment and the overhaul safety of underground power supply equipment.

[0006] The utility model is through following technical scheme realizes, provides a door opening power off mechanism for mine explosion -proof type shell, including screw rod and the shaft of being connected on the shell on the shell and the rotation axis, the rotation axis end and switch knob are connected, and the front door is opened and is adapted with the jack of the front end of screw rod, the rotation axis side is opened and is adapted with the locking hole of the rear end of screw rod, and the rotation axis is firmly connected with handle.

[0007] When the equipment is overhauled, the handle is rotated to make the switch knob power off. The front end of the screw rod is pulled out from the jack of the front door by rotating the screw rod, and the rear end is inserted into the locking hole of the rotation axis. At this time, the switch knob cannot be rotated, the handle cannot be rotated, and the equipment cannot be powered on, which ensures the safety of the overhaul. The front door is opened, and the equipment is overhauled. After the overhaul is completed, the front end of the screw rod is inserted into the jack of the front door and pulled out from the locking hole, the handle is rotated counterclockwise, the knob is rotated, the equipment is powered on, and the normal work is restored.

[0008] As optimization, the shell is firmly connected with a support seat, and the screw rod is threadedly connected with the support seat. The support seat in the scheme realizes the threaded connection of the screw rod and the shell, facilitating the installation of the screw rod.

[0009] As optimization, the shell is fixed with a sheath, and the rotating shaft is connected with the sheath.

[0010] As optimization, the sheath is provided with a limiting slot for avoiding the handle.

[0011] As optimization, the locking hole is a long hole extending along the length direction of the rotating shaft.

[0012] As optimization, the screw rod is provided with an operation part between the shell and the front door.

[0013] The door opening and power cutting mechanism for the mine explosion-proof shell has the advantages of simple structure, accurate and reliable movement, small shell space occupation and convenient installation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is the utility model Figure 1 It is a left view of the rotating shaft position;

[0016] As shown in the figure:

[0017] 1, the front door, 2, the screw rod, 3, the support seat, 4, the switch knob, 5, the sheath, 6, the handle, 7, the shell, 8, the rotating shaft, 9, the locking hole. DETAILED DESCRIPTION

[0018] In order to clearly illustrate the technical features of the scheme, the following through specific embodiments, the scheme is described.

[0019] As Figures 1-2 shown, the door opening and power cutting mechanism for the mine explosion-proof shell of the utility model, including screw connection in the shell 7 on the screw rod 2 and the rotating shaft 8 of the shaft connection in the shell 7, as Figure 1 shown, the front door 1 is located in the front of the shell 7, and the Figure 1 It is a side view of the shell 7, and the front door 1 and the shell 7 leave a certain front and back gap.

[0020] The screw rod 2 can be located inside or outside the shell 7, and is arranged outside in the embodiment, so that the screw rod 2 is convenient to rotate, in order to realize the threaded connection of the screw rod 2 and the shell 7, the support seat 3 is fixedly connected to the shell 7, the support seat 3 is a tubular structure welded to the side of the shell 7, and a threaded hole is formed in the inside of the support seat 3; and the screw rod 2 is in threaded connection with the support seat 3.

[0021] The screw rod 2 is perpendicular to the front door 1, the front door 1 is provided with a plug hole matched with the front end of the screw rod 2, and the screw rod 2 can be inserted into the plug hole when moving forward, so that the front door 1 cannot be opened in translation, and the front door 1 can be opened in translation only after the screw rod 2 is pulled out of the plug hole.

[0022] In order to realize the rotation operation of the screw rod 2, an operation part is arranged on the screw rod 2 and located between the shell 7 and the front door 1, the operation part is an outer hexagonal shaft or a square shaft, so that the screw rod 2 is convenient to rotate through a wrench or a tool.

[0023] The rotating shaft 8 extends leftward and rightward and is perpendicular to the screw rod, in order to realize the rotating connection of the rotating shaft 8 and the shell 7, a sheath 5 is fixedly connected to the shell 7, and the rotating shaft 8 is rotatably connected in the sheath 5, as shown in the figure, the sheath 5 in the embodiment is welded to the outside of the shell 7.The rotating shaft 8 is located in the inner hole of the sheath 5, and the end of the rotating shaft 8 is connected with the switch knob 4 after penetrating through the shell 7, so that the rotating shaft 8 and the switch knob 4 rotate synchronously. Figure 2

[0024] The rotating shaft 8 is fixedly connected with a handle 6, and the sheath 5 is provided with a limiting groove for avoiding the handle 6, so that the handle 6 is avoided and the rotation angle of the handle 6 is limited, and the damage of the assembled switch knob is prevented.

[0025] The rotating shaft 8 is provided with a locking hole 9 matched with the rear end of the screw rod 2 on the side, the locking hole is a long hole extending along the length direction of the rotating shaft 8, the rear end of the screw rod 2 is aligned with the locking hole 9 when the switch knob 4 is in the closed state, and the screw rod 2 is inserted into the locking hole 9 after being pulled out of the plug hole.

[0026] When the switch knob 4 is in the open state, the rear end of the screw rod 2 is misaligned with the locking hole 9, and the screw rod 2 cannot be pulled out of the plug hole.

[0027] The use method of the utility model is as follows:

[0028] When the equipment needs to be overhauled, the handle 6 is rotated clockwise, and the switch knob 4 is powered off at this time, the screw rod 2 is rotated counterclockwise, the front end of the screw rod 2 is pulled out of the plug hole of the front door 1, and the rear end of the screw rod 2 is inserted into the locking hole 9 of the rotating shaft 8, at this time, the switch knob 4 cannot be rotated, the handle 6 cannot be rotated, the equipment cannot be powered, and the safety of the overhaul is ensured, the front door 1 is opened, and the equipment is overhauled, after the overhaul is completed, the front door 1 is closed, the front end of the screw rod 2 is inserted into the plug hole of the front door 1 and pulled out of the locking hole 9, the handle 6 is rotated counterclockwise, the switch knob 4 is rotated, the equipment is powered, and normal work is restored.

[0029] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be described here; the above embodiments and drawings are only used to illustrate the technical solutions of the utility model and are not a limitation on the utility model, and the preferred embodiments of the utility model have been described in detail, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A door opening and power off mechanism for a mine flameproof enclosure, characterized by: The screw rod (2) is screwed on the shell (7), and the rotating shaft (8) is connected to the shell (7), and the end of the rotating shaft (8) is connected to the switch knob (4); the front door (1) is provided with a plug hole matched with the front end of the screw rod (2); the side of the rotating shaft (8) is provided with a locking hole (9) matched with the rear end of the screw rod (2); and the handle (6) is fixed on the rotating shaft (8).

2. The door opening and power off mechanism for a flameproof enclosure for use in mines according to claim 1, characterized in that: The shell (7) is fixed with a support seat (3), and the screw rod (2) is screwed with the support seat (3).

3. The door opening and power off mechanism for a flameproof enclosure for use in mines as claimed in claim 1 wherein: The shell (7) is fixed with a sheath (5), and the rotating shaft (8) is connected to the sheath (5).

4. The door opening and power off mechanism for a flameproof enclosure for use in a mine as claimed in claim 3, wherein: The sheath (5) is provided with a limiting groove for avoiding the handle (6).

5. The door opening and power off mechanism for a flameproof enclosure for use in mines as claimed in claim 1 wherein: The locking hole is a long hole extending along the length direction of the rotating shaft (8).

6. The door opening and power off mechanism for a flameproof enclosure for use in mines as claimed in claim 1 wherein: The screw rod (2) is provided with an operation part between the shell (7) and the front door (1), and the operation part is an outer hexagonal shaft or a square shaft.

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