CN202789832U - Cylinder special for underground coal mine air door and capable of preventing people from being clamped - Google Patents
Cylinder special for underground coal mine air door and capable of preventing people from being clamped Download PDFInfo
- Publication number
- CN202789832U CN202789832U CN 201220485310 CN201220485310U CN202789832U CN 202789832 U CN202789832 U CN 202789832U CN 201220485310 CN201220485310 CN 201220485310 CN 201220485310 U CN201220485310 U CN 201220485310U CN 202789832 U CN202789832 U CN 202789832U
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- CN
- China
- Prior art keywords
- cylinder body
- piston
- air door
- cylinder
- piston rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a cylinder special for an underground coal mine air door and capable of preventing people from being clamped. The cylinder special for the underground coal mine air door and capable of preventing the people from being clamped comprises a cylinder body, wherein a piston and a piston rod are arranged in the cylinder body. A cylinder body seal ring is arranged between the piston and the cylinder body, wherein space inside the cylinder body is separated into a cylinder body front cavity and a cylinder body rear cavity by the piston. A central hole is arranged on the central position of the piston and is provided to ensure that the piston rod penetrates through the central hole, wherein a piston rod seal ring is provided in the central hole and the piston rod is capable of moving back and forth along the central hole of the piston. One end of the piston rod in the back cavity of the cylinder body is provided with a spring baffle plate and springs are arranged on the piston rod between the spring baffle plate and the piston. A piston arresting pin is arranged on the piston rod in the front cavity of the cylinder body and close to the piston. When the cylinder with the structure mentioned above is used for closing the air door of the cylinder and pedestrians pass away the air door and are clamped by the air door, the pedestrians only need to overcome elasticity of the springs and can easily push out the air door and therefore accidents of people clamped by the air door are avoided.
Description
Technical field
The utility model relates to a kind of cylinder, especially relates to a kind of coal mine underground air door with preventing from pressing from both sides people's Special cylinder.
Background technique
The using method of coal mine underground air door is: the pedestrian gets to opening position to cylinder control valve, air door is opened, the pedestrian gets to closed position to cylinder control valve inside in the past, air door is closed, underground mine use is in opening at present, the cylinder that closes air door comprises cylinder body, has the cylinder body inner sleeve in the cylinder body, piston and piston rod, be provided with the cylinder body seal circle between described piston and the cylinder body, piston becomes cylinder body ante-chamber and cylinder body back cavity to the spatial separation in the described cylinder body, the cylinder wall that is positioned at the cylinder body ante-chamber is provided with the ante-chamber pore, the cylinder wall that is positioned at the cylinder body back cavity is provided with the back cavity pore, the cylinder piston rod of said structure is installed on the piston, cylinder is by the flexible air door that opens or closes of piston rod, the coal mine underground air door of said structure is being opened with cylinder, a problem that exists when closing air door is, when at closing time again the someone enter and just be easy to occur air door folder casualty accident.
The model utility content
The technical problems to be solved in the utility model provides a kind of coal mine underground air door with preventing pressing from both sides people's Special cylinder, can not produce the accident that crushes the people when using this cylinder to close air door.
For solving the problems of the technologies described above, the utility model coal mine underground air door is with preventing from pressing from both sides people's Special cylinder, comprise cylinder body, has the cylinder body inner sleeve in the cylinder body, piston and piston rod, be provided with the cylinder body seal circle between described piston and the cylinder body, piston becomes cylinder body ante-chamber and cylinder body back cavity to the spatial separation in the described cylinder body, the cylinder wall that is positioned at the cylinder body ante-chamber is provided with the ante-chamber pore, the cylinder wall that is positioned at the cylinder body back cavity is provided with the back cavity pore, the central position of described piston is provided with the center hole that passes for described piston rod, the rod seal circle is housed in this center hole, and described piston rod can move back and forth along the center hole hermetic seal of described piston; An end that is positioned at the piston rod of described cylinder body back cavity is provided with the spring plate washer, on the piston rod between this spring plate washer and the described piston spring is housed; The position that is positioned at the close described piston of piston rod of described cylinder body ante-chamber is provided with the piston limit pin.
When the cylinder of stating in the use structure is closed air door, since piston rod can move back and forth along the center hole hermetic seal of described piston and spring plate washer and described piston between piston rod on spring is housed, therefore the elastic force that the pedestrian only need overcome spring when the pedestrian is clamped by air door by air door just can be pushed air door open easily, piston rod is stretched out to the direction away from cylinder body, and the accident that can avoid air door to crush the people occurs.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the utility model coal mine underground air door sectional structure schematic representation that prevents from pressing from both sides people's Special cylinder.
Embodiment
Referring to Fig. 1, the utility model coal mine underground air door is with preventing from pressing from both sides people's Special cylinder, comprise cylinder body 1, has cylinder body inner sleeve 2 in the cylinder body 1, piston 3 and piston rod 4, be provided with cylinder body seal circle 5 between described piston 3 and the cylinder body 1, piston 3 becomes cylinder body ante-chamber 6 and cylinder body back cavity 7 to the spatial separation in the described cylinder body 1, the cylinder wall that is positioned at cylinder body ante-chamber 6 is provided with ante-chamber pore 8, the cylinder wall that is positioned at cylinder body back cavity 7 is provided with back cavity pore 9, the central position of described piston 3 is provided with the center hole that passes for described piston rod 4, rod seal circle 10 is housed in this center hole, and described piston rod 4 can move back and forth along the center hole hermetic seal of described piston 3; An end that is positioned at the piston rod of described cylinder body back cavity 7 is provided with spring plate washer 11, on the piston rod between this spring plate washer 11 and the described piston 3 spring 12 is housed; The position that is positioned at the close described piston 3 of piston rod of described cylinder body ante-chamber 6 is provided with piston limit pin 13.
Claims (1)
1. a coal mine underground air door is with preventing from pressing from both sides people's Special cylinder, comprise cylinder body (1), has cylinder body inner sleeve (2) in the cylinder body (1), piston (3) and piston rod (4), be provided with cylinder body seal circle (5) between described piston (3) and the cylinder body (1), piston (3) becomes cylinder body ante-chamber (6) and cylinder body back cavity (7) to the spatial separation in the described cylinder body (1), the cylinder wall that is positioned at cylinder body ante-chamber (6) is provided with ante-chamber pore (8), the cylinder wall that is positioned at cylinder body back cavity (7) is provided with back cavity pore (9), it is characterized in that: the central position of described piston (3) is provided with the center hole that passes for described piston rod (4), rod seal circle (10) is housed in this center hole, and described piston rod (4) can move back and forth along the center hole hermetic seal of described piston (3); An end that is positioned at the piston rod of described cylinder body back cavity (7) is provided with spring plate washer (11), on the piston rod between this spring plate washer (11) and the described piston (3) spring (12) is housed; The position that is positioned at the close described piston (3) of piston rod of described cylinder body ante-chamber (6) is provided with piston limit pin (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485310 CN202789832U (en) | 2012-09-21 | 2012-09-21 | Cylinder special for underground coal mine air door and capable of preventing people from being clamped |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485310 CN202789832U (en) | 2012-09-21 | 2012-09-21 | Cylinder special for underground coal mine air door and capable of preventing people from being clamped |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789832U true CN202789832U (en) | 2013-03-13 |
Family
ID=47817098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220485310 Withdrawn - After Issue CN202789832U (en) | 2012-09-21 | 2012-09-21 | Cylinder special for underground coal mine air door and capable of preventing people from being clamped |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840190A (en) * | 2012-09-21 | 2012-12-26 | 铁煤集体企业联合发展有限公司 | Air cylinder special for preventing from clamping persons for underground air door of coal mine |
-
2012
- 2012-09-21 CN CN 201220485310 patent/CN202789832U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840190A (en) * | 2012-09-21 | 2012-12-26 | 铁煤集体企业联合发展有限公司 | Air cylinder special for preventing from clamping persons for underground air door of coal mine |
| CN102840190B (en) * | 2012-09-21 | 2014-09-24 | 铁煤集体企业联合发展有限公司 | Air cylinder special for preventing from clamping persons for underground air door of coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20140924 |
|
| RGAV | Abandon patent right to avoid regrant |