CN202970204U - Automatic locking device of mine safety door - Google Patents
Automatic locking device of mine safety door Download PDFInfo
- Publication number
- CN202970204U CN202970204U CN 201220588727 CN201220588727U CN202970204U CN 202970204 U CN202970204 U CN 202970204U CN 201220588727 CN201220588727 CN 201220588727 CN 201220588727 U CN201220588727 U CN 201220588727U CN 202970204 U CN202970204 U CN 202970204U
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- CN
- China
- Prior art keywords
- connecting rod
- safety door
- turning cylinder
- outer end
- mandril
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an automatic locking device for a mine safety door. The device comprises a fixing sleeve and a rotary shaft rotatably connected in the fixing sleeve, wherein a first connecting rod and a second connecting rod located on the two sides of the rotary shaft are vertically arranged at the two ends of the rotary shaft respectively; the outer end of the first connecting rod is vertically connected with a mandril; the outer end of the second connecting rod is connected with a counter weight; a third connecting rod located on the same side with the first connecting rod is vertically arranged on the middle part of the rotary shaft; an opening/closing shaft is vertically arranged at the outer end of the third connecting rod; a rolling bearing is arranged on the mandril; a locknut is arranged on the end part of the mandril; and a spacer bush sleeved on the mandril is arranged between the locknut and the rolling bearing. By adopting the principle of a mechanical connecting rod transmission mechanism, the device disclosed by the utility model is novel in design, simple in structure, energy-saving and environment-friendly, safe and reliable, firm and durable and easy to popularize and use, can adapt to severe environment, and has long service life and strong practicability.
Description
Technical field
The utility model belongs to the industrial machinery technical field, relates in particular to a kind of mine safety door self-locking gear.
Background technology
At present, the folding of the mine safety door in colliery adopts travel switch (or approach switch) to control, the employing HYDRAULIC CONTROL SYSTEM is also arranged, complex structure, cost are high, uneconomical, and because ambient conditions under coal mine is abominable, often accident breaks down, poor reliability affects mine and keeps the safety in production normally.
The utility model content
The utility model is in order to solve weak point of the prior art, and a kind of simple in structure, mine safety door self-locking gear that cost is low, safe and reliable is provided.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: mine safety door self-locking gear, comprise fixed cover and be rotatably connected on the interior turning cylinder of fixed cover, the turning cylinder two ends vertically are provided with respectively first connecting rod and the second connecting rod that is positioned at the turning cylinder both sides, the first connecting rod outer end vertically is connected with push rod, the second connecting rod outer end is connected with balancing weight, vertically is provided with and the third connecting rod of first connecting rod in the same side in the middle part of turning cylinder, and the outer end of third connecting rod vertically is provided with the folding axle.
Described push rod is provided with rolling bearing, and the push rod end is provided with locking nut, is provided with the spacer that is enclosed within on push rod between locking nut and rolling bearing.
Described fixed cover is provided with two, and two fixed covers lay respectively at the both sides of turning cylinder, and the folding axle presss from both sides with third connecting rod by connection and is rotationally connected.
Adopt technique scheme, fixed cover is fixedly mounted on derrick, under the effect of balancing weight, the folding axle penetrates in the fixing hole of safety door, makes safety door be in closed condition.When cage hoisting during to well head, be fixed on and hit the rail top rolling bearing that makes progress on cage, push rod drives first connecting rod and rotates, first connecting rod drives turning cylinder and rotates, turning cylinder drives by third connecting rod and links folder, connection is carried moving folding axle secretly and is moved axially, and the folding axle is extracted out in the safety door fixing hole, and safety door can freely be opened.Fall behind under cage, under the balancing weight effect, second connecting rod drives the turning cylinder backward rotation, and turning cylinder promotes the folding axle by third connecting rod and sets back (penetrating in the safety door fixing hole), and safety door is in blocking.
The utility model adopts the principle of mechanical linkage transmission mechanism, novel in design, simple in structure, energy-conserving and environment-protective, safe and reliable and can adapt to adverse circumstances, and durable, the life-span is long, and is practical, is easy to apply.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the central A of Fig. 1 is to view.
The specific embodiment
As depicted in figs. 1 and 2, mine safety door self-locking gear of the present utility model, comprise two fixed covers 1 and be rotatably connected on the interior turning cylinder 2 of fixed cover 1, turning cylinder 2 two ends vertically are provided with respectively first connecting rod 3 and the second connecting rod 4 that is positioned at turning cylinder 2 both sides, first connecting rod 3 outer ends vertically are connected with push rod 5, second connecting rod 4 outer ends are connected with balancing weight 6, and turning cylinder 2 middle parts vertically are provided with and the third connecting rod 7 of first connecting rod 3 in the same side, and the outer end of third connecting rod 7 vertically is provided with folding axle 8.
Two fixed covers 1 are fixedly mounted on derrick, and under the effect of balancing weight 6, folding axle 8 penetrates in the fixing hole of safety door, makes safety door be in closed condition.When cage hoisting during to well head, the rail top rolling bearing 9(rolling bearing 9 that makes progress that hits that is fixed on cage plays sliding friction is converted into rolling friction, the effect of the power of reducing friction), push rod 5 drives first connecting rod 3 and rotates, first connecting rod 3 drives turning cylinder 2 rotations, and turning cylinder 2 drives by third connecting rod 7 and links folder, and connection is carried moving folding axle 8 secretly and moved axially, folding axle 8 is extracted out in the safety door fixing hole, and safety door can freely be opened.Fall behind under cage, under balancing weight 6 effects, second connecting rod 4 drives turning cylinder 2 backward rotation, and turning cylinder 2 promotes folding axle 8 by third connecting rod 7 and sets back (penetrating in the safety door fixing hole), and safety door is in blocking.
Claims (3)
1. mine safety door self-locking gear, it is characterized in that: comprise fixed cover and be rotatably connected on the interior turning cylinder of fixed cover, the turning cylinder two ends vertically are provided with respectively first connecting rod and the second connecting rod that is positioned at the turning cylinder both sides, the first connecting rod outer end vertically is connected with push rod, the second connecting rod outer end is connected with balancing weight, the turning cylinder middle part vertically is provided with and the third connecting rod of first connecting rod in the same side, and the outer end of third connecting rod vertically is provided with the folding axle.
2. mine safety door self-locking gear according to claim 1, it is characterized in that: described push rod is provided with rolling bearing, and the push rod end is provided with locking nut, is provided with the spacer that is enclosed within on push rod between locking nut and rolling bearing.
3. mine safety door self-locking gear according to claim 1 and 2, it is characterized in that: described fixed cover is provided with two, and two fixed covers lay respectively at the both sides of turning cylinder, and the folding axle presss from both sides with third connecting rod by connection and is rotationally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220588727 CN202970204U (en) | 2012-11-09 | 2012-11-09 | Automatic locking device of mine safety door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220588727 CN202970204U (en) | 2012-11-09 | 2012-11-09 | Automatic locking device of mine safety door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970204U true CN202970204U (en) | 2013-06-05 |
Family
ID=48511296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220588727 Expired - Fee Related CN202970204U (en) | 2012-11-09 | 2012-11-09 | Automatic locking device of mine safety door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970204U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913079A (en) * | 2012-11-09 | 2013-02-06 | 郑州金鑫机械制造有限公司 | Automatic locking device for mine safety door |
| WO2023005116A1 (en) * | 2021-07-29 | 2023-02-02 | 浙江星星冷链集成股份有限公司 | Arc cabinet gravity type automatic door closing structure |
-
2012
- 2012-11-09 CN CN 201220588727 patent/CN202970204U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913079A (en) * | 2012-11-09 | 2013-02-06 | 郑州金鑫机械制造有限公司 | Automatic locking device for mine safety door |
| WO2023005116A1 (en) * | 2021-07-29 | 2023-02-02 | 浙江星星冷链集成股份有限公司 | Arc cabinet gravity type automatic door closing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131109 |