CN204200261U - A kind of coal mine ventilation door blocking mechanism - Google Patents
A kind of coal mine ventilation door blocking mechanism Download PDFInfo
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- CN204200261U CN204200261U CN201420542600.6U CN201420542600U CN204200261U CN 204200261 U CN204200261 U CN 204200261U CN 201420542600 U CN201420542600 U CN 201420542600U CN 204200261 U CN204200261 U CN 204200261U
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- air door
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Abstract
The utility model relates to a kind of coal mine ventilation door blocking mechanism, comprise: be arranged on the pulley on tunnel and rope, the two ends of described rope are separately fixed on two keepers, two described keepers are arranged on twice air door respectively, the installation site of described keeper is: be hingedly coupled to the upper limb that the air door doorframe of side opened by air door door leaf, the direction that described keeper can be opened to door leaf around described hinge is dug.The utility model adopts keeper to control the opening and closing of air door, and the interlocking mechanism that will be originally used on door leaf, be used on the interlocking of keeper, avoid the half-open position of air door.The processing and fabricating of mechanism described in the utility model and in-site installation are all very simple, cost is very low, while solving the half-open problem of air door, maintain the advantage that original air door locking device is esy to use, safe and reliable, the situation that can effectively prevent twice air door from simultaneously opening occurs.
Description
Technical field
The utility model relates to a kind of coal mine ventilation door blocking mechanism, is a kind of mechanical device, is a kind of for the safety device in coal mine.
Background technology
Coal mine ventilation door is the one of Ventilation Structures, is arranged in underworkings and air intake and return air can not be mixed mutually, prevent Air escape branch.Namely fresh wind and dirty wind are separated, but air door can pedestrian, be open to traffic.In order to prevent Air escape branch, usually will arrange twice air door, when opening together, another road should be in closed condition, and namely two air doors will realize locking.If this is because twice air door is opened can cause Air escape branch simultaneously, destroy the stability of ventilation system, cause methane accumulation, bring gas accident risk.The change that can bring windage all opened by twice air door, has influence on the stability of whole ventilation system, and impact also can to main fan affects its life-span.
The air door of existing underground coal mine has common air door and self closing door.Self closing door is divided into again mechanical type and electric, and wherein the locking of mechanical air door also adopts the blocking device of common air door; The blocking mechanism of electric air door can realize electric interlock, but unreliable, and it is not very extensive for using.Common air door adopts traditional blocking device usually, and namely adopt the rope of a certain length to be connected together by twice air door by leading block, when one air door is opened to extreme position, be subject to the restriction of rope lengths, another road air door can not be opened again.The structure of this air door is very simple, only has several part such as pulley, rope, therefore, seldom breaks down, and work is very reliable, and in existing mine, Application comparison is extensive.But its shortcoming of the blocking mechanism of this air door is also fairly obvious.Due to structural problem, the length of rope is fixing, when an air door is all opened, just can make another air door Close All, that is, when an air door is half-open, then another air door also can be half-open, so just very easily occurs the problem of Air escape branch.And this problem usually appear at blast that twice air door bears larger when, because blast is comparatively large, often blown open by air door, make air door just in time be in half-open state, consequently twice air door is all in half-open state, causes Air escape branch.Use self closing door can solve the half-open problem of two air doors, but due to self closing door comparatively complicated, part is more, easily breaks down, and make air door malfunctioning, reliability is poor.Although air door is a kind of simple device, in the complex environment of down-hole, the fault of air door also may cause casualties, and therefore, the reliability of air door is a very important index.How to find a kind of simple and reliable air door locking mechanism, say in a sense, be a problem concerning life security, therefore, must be properly settled.
Summary of the invention
In order to overcome the problem of prior art, the utility model proposes a kind of coal mine ventilation door blocking mechanism.Described mechanism remains the mechanism using pulley and rope, but application is in the interlock of keeper cleverly, and simple and reliable solves the half-open problem of twice air door.
The purpose of this utility model is achieved in that a kind of coal mine ventilation door blocking mechanism, comprise: be arranged on the pulley on tunnel and rope, the two ends of described rope are separately fixed on two keepers, two described keepers are arranged on twice air door respectively, the installation site of described keeper is: be hingedly coupled to the upper limb that the air door doorframe of side opened by air door door leaf, the direction that described keeper can be opened to door leaf around described hinge is dug.
Further, described keeper is the one in angle steel or band steel, and the length of described keeper is slightly larger than the width of air door.
Further, described keeper is provided with spring keeper being in fasten door leaf state.
Further, described spring is around the torsion spring on described hinge.
Further, described spring is extension spring or stage clip.
Further, the permanent position of described rope on keeper is on a lateral edges relative with hinge.
Further, described rope is provided with length adjuster.
Further, described length adjuster comprises; One section of two ends, with the adjustment bar of the through hole through rope, two through holes is respectively equipped with lock screw.
The beneficial effect that the utility model produces is: the utility model adopts keeper to control the opening and closing of air door, and the interlocking mechanism that will be originally used on door leaf, be used on the interlocking of keeper, avoid the generation of the half-open position situation of air door.The processing and fabricating of mechanism described in the utility model and in-site installation are all very simple, cost is very low, while solving the half-open problem of air door, maintain original air door locking device easy to use, safe and reliable advantage, effectively can take precautions against the situation generation that twice air door is opened simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structural representation of mechanism described in embodiment one of the present utility model;
Fig. 2 is the structural representation of mechanism described in embodiment one of the present utility model, is the enlarged drawing of A point in Fig. 1;
Fig. 3 is the keeper schematic diagram of mechanism described in embodiment two of the present utility model;
Fig. 4 is the keeper schematic diagram of mechanism described in embodiment two of the present utility model, is the view in D direction in Fig. 3;
Fig. 5 is the schematic diagram of the length adjuster described in embodiment eight of the present utility model.
Detailed description of the invention
Embodiment one:
The present embodiment is a kind of coal mine ventilation door blocking mechanism, as shown in Figure 1, 2.The present embodiment comprises: be arranged on the pulley 1 on tunnel and rope 4, the two ends of described rope are separately fixed on two keepers 3,6, two described keepers are arranged on twice air door 7,8 respectively, the installation site of described keeper is: hinge 301,601 is connected to the upper limb that the air door doorframe 2,5 of side (in Fig. 2 arrow B direction) opened by air door door leaf, and the direction that described keeper can be opened to door leaf around described hinge is dug (in Fig. 2 arrow C direction).
The general principle of the present embodiment originally will directly be used in the pulley and rope that control door leaf, use instead on control keeper, even if another road air door door leaf also can be prevented to be opened under the state that one air door is half-open, effectively improve the open and-shut mode of door leaf, no longer there will be the state that two air doors are simultaneously half-open.The present embodiment only increases by two keepers and installs the hinge (hinge) of keeper on the basis of original blocking device, does not have the complexity of the whole device of too much increase, meets the simplest principle in engineering design.Theoretically, because whole device does not increase too much part, so the probability broken down also does not increase significantly.In real work, according to a set of throttle locking device of the present embodiment design and installation, really there is not any fault, and respond well through one section of practical application yet.
The groundwork process of the present embodiment is: when pushing any one air door open, such as, in Fig. 1 left side air door (label is 8) time, the keeper (in Fig. 1, label is 3) of left side air door door leaf upper limb is pushed open, this keeper rotates around hinge (in Fig. 1, label is 301), tension rope, rope is by another keeper (in Fig. 1, label is 6) tension on right side in Fig. 1, and this keeper is held on the door leaf (number in the figure is 7) on right side, and this door leaf cannot be opened.In like manner, if right side door leaf is open, then the keeper on right side lifts, then drive rope, is held in by the keeper in left side on the door leaf in left side, and the door leaf in left side cannot be opened.
The ingenious part of the present embodiment is, is applied in former the pulley and rope that control door leaf, is simply applied in and controls, on keeper, to utilize keeper to the control action of door leaf, avoids the problem that twice interlocking air door door leaf can not interlock in half-open position.Even and if the present embodiment at two keepers all in half-open position, door leaf also can not be made to be in half-open position because, keeper control door leaf open key point.
Air door described in the present embodiment is the vertical-hinged type air door of the unidirectional opening and closing of door leaf common in mine, has the door leaf that two relative under normal circumstances.So-called unidirectional, refer to the flat door leaf opened can only to doorframe around hinge Unscrew, under the stop of doorframe, door leaf can not rotate to the another side of doorframe.In the present embodiment that door leaf is openable while be called open side, side is closed in being called of can not being opened by door leaf.
Pulley described in the present embodiment and rope, can use pulley and the rope of original air door locking.Under normal conditions, two pulleys at least installed by the air door of two fan interlockings, namely respectively a pulley is set in the closedown side of two air doors, certainly in order to lead, other several pulleys can also be set, but the pulley arranging two air door closed edges is the most important, because, these two pulleys are key pulleys that strop strap moves keeper motion, are the position of two key pulleys as shown in Figure 1, eliminate other leading blocks in Fig. 1.
Can see by Fig. 1 or 2, keeper is arranged on the open side of door leaf, and is arranged on the upper end of door leaf, and keeper is a strip object, the horizontal open side at door leaf.Open from restriction keeper, the length of keeper can be very short, as long as the key point of opening at restriction door leaf: the joint of two fan door leafs, the keeper of a piece very little just can limit opening of door leaf.But in actual design, also to consider that keeper maintains the state of opening when door leaf is opened, if keeper is too short, also to designs a set of keeper that makes specially and maintain the device opened, then too complicated, and keeper is extended for the width of two door leafs, state (representing that the state being opened by door leaf with single dotted broken line in Fig. 2) when then can door leaf be utilized very easily to open, maintain the state (state that keeper represented by dashed line in Fig. 2 is opened) that keeper is opened, and any attachment device need not be increased.
Rope is actual is in FIG in a kind of lax state, and two keepers are all in and are buckled in the state of door leaf, although be buckled on door leaf, door leaf can be open, and wherein any one door leaf is open, and another door leaf all can be stoped to be open.
Keeper can be that the band steel of band shape is done, but in order to gain in strength, avoids bending, and can use angle steel.Keeper can utilize gravity, naturally droops, the air door door leaf that locking is closed, as shown in Fig. 1 or 2.Also can use spring, make the state that keeper keeps sagging, the state of the door leaf that keeps Locked in other words.Spring can use torsion spring, stage clip, or extension spring etc., depend on the design of concrete mounting structure.
The fixed point of rope on keeper, should leave hinge (axis of rotation of hinge) far away as much as possible, so that rope has enough move distances.The steel cable that rope should select plastic strain less, or other ropes.Rope is preferably provided with length adjustment device, adjusts the length of rope at any time, make rope keep reliable duty.
Embodiment two:
The present embodiment is the improvement of embodiment one, be embodiment one about mechanism according to claim 1, it is characterized in that, described keeper is the one in angle steel or band steel, and the length of described keeper is slightly larger than the width of air door.
The angle steel of the keeper described in the present embodiment, its hinge is arranged on the spine of angle steel, that is: the position that two long limits are crossing, as shown in Figure 3.
The length of keeper should more than the width of two fan door leafs, as shown in Figure 4.
Embodiment three:
The present embodiment is the improvement of above-described embodiment, is the refinement of above-described embodiment about keeper, and the keeper described in the present embodiment is provided with spring keeper being in fasten door leaf state.
When line relaxation, keeper under gravity, normally sagging, i.e. the horizontal upper limb at door leaf, keeper itself can play certain effect stopping door leaf, but, if when the blast running into door leaf both sides is larger, door leaf just may be blown open, therefore, use spring to be buckled on door leaf by keeper, door leaf is closed be the selection that good.Spring can be torsion spring, is namely arranged on the axis of rotation of hinge, utilizes torsion to be pressed on door leaf by keeper.Also can use stage clip or extension spring, keeper is buckled on door leaf.
Embodiment four:
The present embodiment is the improvement of embodiment three, is that embodiment three draws refinement about spring.Spring described in the present embodiment is around the torsion spring on described hinge.
Embodiment five:
The present embodiment is the improvement of embodiment three, is that embodiment three draws refinement about spring.Spring described in the present embodiment is extension spring or stage clip.
Embodiment six:
The present embodiment is the improvement of above-described embodiment, is the refinement of above-described embodiment about rope.The permanent position of rope described in the present embodiment on keeper is arranged on a keeper lateral edges relative with hinge.
The fixed point of rope on keeper, should, as far as possible away from hinge, on the one hand in order to increase the arm of force, on the other hand in order to improve the pulling force angle between rope and pulley, make the pulling force of rope maximum.
Embodiment seven:
The present embodiment is the improvement of above-described embodiment, is the refinement of above-described embodiment about rope.Rope described in the present embodiment is provided with length adjuster.
The length of rope must be just right, but the plastic strain of rope in use occurs unavoidably, i.e. the length of rope, therefore, should set up the length adjuster of rope, makes the duty that rope remains best.
Rope lengths adjusting device can have many forms, can select as required.
Embodiment eight:
The present embodiment is the improvement of embodiment seven, is the refinement of embodiment seven about length adjuster, as shown in Figure 5.Length adjuster described in the present embodiment comprises; One section of two ends adjustment bar 401, two through holes with the through hole through rope are respectively equipped with lock screw 402.
Finally it should be noted that, below only in order to the technical solution of the utility model to be described and unrestricted, although be described in detail the utility model with reference to preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model (form etc. of the mounting means of such as pulley, the type of rope, keeper) or equivalent replacement, and not depart from the spirit and scope of technical solutions of the utility model.
Claims (8)
1. a coal mine ventilation door blocking mechanism, comprise: be arranged on the pulley on tunnel and rope, it is characterized in that, the two ends of described rope are separately fixed on two keepers, two described keepers are arranged on twice air door respectively, the installation site of described keeper is: be hingedly coupled to the upper limb that the air door doorframe of side opened by air door door leaf, the direction that described keeper can be opened to door leaf around described hinge is dug.
2. mechanism according to claim 1, is characterized in that, described keeper be angle steel or band steel in one, the length of described keeper is greater than the width of air door.
3. mechanism according to claim 1 and 2, is characterized in that, described keeper is provided with spring keeper being in fasten door leaf state.
4. mechanism according to claim 3, is characterized in that, described spring is around the torsion spring on described hinge.
5. mechanism according to claim 3, is characterized in that, described spring is extension spring or stage clip.
6. mechanism according to claim 1 and 2, is characterized in that, the permanent position of described rope on keeper is on a lateral edges relative with hinge.
7. mechanism according to claim 6, is characterized in that, described rope is provided with length adjuster.
8. mechanism according to claim 7, is characterized in that, described length adjuster comprises; One section of two ends, with the adjustment bar of the through hole through rope, two through holes is respectively equipped with lock screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542600.6U CN204200261U (en) | 2014-09-22 | 2014-09-22 | A kind of coal mine ventilation door blocking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420542600.6U CN204200261U (en) | 2014-09-22 | 2014-09-22 | A kind of coal mine ventilation door blocking mechanism |
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| Publication Number | Publication Date |
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| CN204200261U true CN204200261U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420542600.6U Active CN204200261U (en) | 2014-09-22 | 2014-09-22 | A kind of coal mine ventilation door blocking mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373150A (en) * | 2014-09-22 | 2015-02-25 | 北京天地华泰采矿工程技术有限公司 | Coal mine air door locking mechanism |
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2014
- 2014-09-22 CN CN201420542600.6U patent/CN204200261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373150A (en) * | 2014-09-22 | 2015-02-25 | 北京天地华泰采矿工程技术有限公司 | Coal mine air door locking mechanism |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 100013 Beijing city Chaoyang District Hepingli 13 No. 35 coal Street building room 1006 Patentee after: BEIJING TIANDI HUATAI MINING MANAGEMENT CO., LTD. Address before: 100013 Beijing city Chaoyang District Hepingli 13 No. 35 coal Street building room 1006 Patentee before: Beijing Tiandi Huatai Mining Engineering & Technology Co., Ltd. |