CN217925965U

CN217925965U - Air door locking device

Info

Publication number: CN217925965U
Application number: CN202122320124.6U
Authority: CN
Inventors: 李明; 徐�明; 吕二忠; 朱冬; 张斌; 陈耀; 朱春阳; 赵钦
Original assignee: Yongmei Group Co ltd
Current assignee: Yongmei Group Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-11-29
Anticipated expiration: 2031-09-24

Abstract

The utility model relates to an air door locking device, which comprises a self-reset control valve arranged at a first air door, wherein the self-reset control valve comprises a valve body, and an air inlet, a first air outlet and a second air outlet are arranged on the valve body; the valve body is movably assembled with a valve core, and the valve core is connected with a trigger part extending to the outside of the valve body. The air door locking device further comprises a double-acting air cylinder, the double-acting air cylinder is arranged at the second air door, and a rodless cavity communicated with the first air outlet through a connecting air pipe and a rod cavity communicated with the second air outlet through a connecting air pipe are formed in the double-acting air cylinder. The air door locking device further comprises a locking component, the locking component is movably arranged at the second air door and connected with a piston rod of the double-acting air cylinder, the locking component is driven to move to a position where the second air door is blocked to be opened when the piston rod of the double-acting air cylinder extends out, and the locking component is driven to move to a position where the second air door is avoided when the piston rod of the double-acting air cylinder retracts.

Description

Air door locking device

Technical Field

The utility model relates to an air door blocking device.

Background

The regulation of coal mine safety regulations: in each connecting lane between the air inlet and the air return shaft and between the main air inlet and the main air return lane, a permanent air wall must be built; the communication lane that needs to use must install forward air door and reverse air door to set up air door blocking device, guarantee to open only one in forward air door and the reverse air door. At present, most of locking devices used underground are mechanical locking devices, which are heavy, complex in installation process and high in cost, and the phenomena of insensitive action, blockage and even incapability of opening two air doors often occur in the using process.

The utility model discloses a chinese utility model patent that the bulletin number is CN202001045U discloses a mining air door interlock, and it includes two-position tee bend mechanical valve and shutting cylinder, and the shutting cylinder is the single-action cylinder, is connected with the bolt on its piston rod, and two-position tee bend mechanical valve is installed in first air door department, and the shutting cylinder is installed in second air door department. Two-position three way mechanical valve has the trigger part, has seted up the jack that uses with the bolt cooperation on the second air door, and when first air door was opened, first air door top pushed away the trigger part, and two-position three way mechanical valve leads gas to shutting cylinder, and shutting cylinder drive bolt inserts in the jack to prevent that the second air door from opening. Of course, the mining air door interlocking device has two sets, and the other set is reversely arranged on the two air doors.

The mining air door interlocking device in the prior art has the problems that the locking cylinder is a single-acting cylinder, the locking cylinder is reset by a spring, but after the locking cylinder is used for a long time, the position between the bolt and the jack cannot be kept right, so that the bolt and the jack are not easy to insert and separate, the locking cylinder can be ensured by high-pressure gas during insertion, the reset force of the spring is small, the bolt and the jack can not be ensured to be reliably separated, and the condition that the air door cannot be opened when the second air door is required to be opened is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air door blocking device to the shutting cylinder that solves among the prior art relies on the spring to reset and easily leads to the technical problem that the air door can't normally be opened.

In order to achieve the above object, the utility model provides an air door blocking device's technical scheme is: an air door locking device comprises a self-resetting control valve arranged at a first air door, wherein the self-resetting control valve comprises a valve body, and an air inlet, a first air outlet and a second air outlet are formed in the valve body;

the valve body is movably assembled with a valve core, the valve core is used for controlling one of the two air outlets to be communicated with the air inlet, the other air outlet is disconnected with the air inlet, the valve core is connected with a triggering part extending to the outside of the valve body, the triggering part is used for driving the valve core to act after the first air door is triggered after the first air door is opened so as to enable the first air outlet to be communicated with the air inlet, and the valve core is reset to a position where the second air outlet is communicated with the air inlet after the second air door is closed;

the air door locking device also comprises a double-acting air cylinder, the double-acting air cylinder is arranged at the second air door, and a rodless cavity communicated with the first air outlet through a connecting air pipe and a rod cavity communicated with the second air outlet through a connecting air pipe are arranged in the double-acting air cylinder;

the air door locking device further comprises a locking component, the locking component is movably arranged at the second air door and connected with a piston rod of the double-acting air cylinder, the locking component is driven to move to a position where the second air door is blocked to be opened when the piston rod of the double-acting air cylinder extends out, and the locking component is driven to move to a position where the second air door is avoided when the piston rod of the double-acting air cylinder retracts.

Has the beneficial effects that: can control shutting part reciprocating motion through from reset control valve and double-acting cylinder, and drive power comes from compressed gas, compares among the prior art bolt and compares through the mode that the spring resets, also can not lead to the circumstances that the shutting can't act because of reasons such as jamming appear after long-time the use, guarantees that the air door can be smoothly, normally open and close.

Preferably, the locking component is a bolt fixedly arranged on a piston rod of the double-acting air cylinder, and the bolt is used for being inserted into a jack of the second air door. The second air door is locked and opened by adopting a bolt mode, and the structure is simple.

Preferably, the valve spool is slidably fitted in the valve body.

Preferably, the triggering part comprises a pressing plate positioned outside the valve body, and the pressing plate is used for being pressed by the first air door when the first air door is opened. The area of the top pressure plate is large, and the top pressure plate is easily pushed by the first air door.

Preferably, a return spring is further arranged between the valve core and the valve body, and the return spring is used for driving the valve core to return to a position where the second air outlet is communicated with the air inlet when the first air door is closed.

Preferably, an air inlet pipe is connected to an air inlet of the valve body, and a stop valve is installed on the air inlet pipe. After the stop valve is arranged, if the air inlet pipe breaks down, the air inlet pipe can be quickly closed.

Preferably, an air inlet pipe is connected to an air inlet of the valve body, a connector is arranged at the end of the air inlet pipe, and the connector is used for being connected to an underground compressed air pipeline.

Preferably, the valve body is provided with a pressure relief opening, and the pressure relief opening is used for being communicated with the second air outlet when the first air outlet admits air and is used for being communicated with the first air outlet when the second air outlet admits air.

Preferably, the locking component comprises a stop lever rotatably mounted at the second damper, and the piston rod is connected with the stop lever to drive the stop lever to swing back and forth.

Preferably, a piston is slidably assembled in the double-acting cylinder, the piston comprises a plug body and the piston rod, and the plug body is provided with an orifice communicated with a rod cavity and a rodless cavity.

Drawings

Fig. 1 is a schematic structural view of an air door locking device provided by the present invention;

description of reference numerals:

1. a joint; 2. an air inlet duct; 3. a stop valve; 4. a top pressing plate; 5. a self-resetting control valve; 6. an air inlet; 7. a first air outlet; 8. a second air outlet; 9. connecting an air pipe; 10. a double-acting cylinder; 11. a piston rod; 12. a bolt; 13. and (4) inserting the jack.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements defined by the phrases "comprising a" \8230; "do not exclude processes, methods of including such elements.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" as may be used herein are to be construed broadly, e.g., as being fixed or releasably connected or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model provides an air door blocking device's concrete embodiment:

as shown in fig. 1, the air door locking device comprises a self-reset control valve 5 and a double-acting air cylinder 10, wherein the self-reset control valve 5 comprises a valve body, an air inlet 6 and two air outlets are formed in the valve body, the two air outlets are a first air outlet 7 and a second air outlet 8 respectively, the first air outlet 7, the air inlet 6 and the second air outlet 8 are sequentially arranged, a valve core is assembled in the valve body in a sealing and sliding mode, a triggering portion and a reset spring are connected to the valve core, the reset spring is pressed between the valve core and the valve body in a pressing mode, the spring can be driven to move towards the left side of fig. 1, the air inlet 6 is communicated with the second air outlet 8, and the air inlet 6 is separated from the first air outlet 7. The triggering part extends to the outside of the valve body, the triggering part is a triggering rod, a top pressing plate 4 is fixed at the end part of the triggering rod, when the air door is opened, the top pressing plate 4 is pushed, the elastic force of a return spring is overcome, the air inlet 6 is communicated with the first air outlet 7, and the air inlet 6 is separated from the second air outlet 8.

The double-acting cylinder 10 comprises a cylinder body and a piston which is assembled in the cylinder body in a sliding and sealing mode, the piston comprises a plug body and a piston rod 11 extending to the outside, and a plug pin 12 is fixed on the piston rod 11. The piston divides the interior of the cylinder body into a rodless cavity and a rod cavity, wherein the rodless cavity is connected with the first air outlet 7 through a connecting air pipe 9, and the rod cavity is connected with the second air outlet 8 through the connecting air pipe 9. When the jacking plate 4 is jacked by the air door, the first air outlet 7 guides air into the rodless cavity to push the piston rod 11 and the plug pin 12 to extend out; when the top pressure plate 4 is separated from the air door, the second air outlet 8 guides the air into the rod cavity, and pushes the piston rod 11 and the plug pin 12 to retract.

As shown in fig. 1, an air inlet pipe 2 is connected to an air inlet 6 of a self-reset control valve 5, a stop valve 3 is installed on the air inlet pipe 2, and the stop valve 3 controls the on-off of the air inlet pipe 2. The joint 1 is installed at one end of the air inlet pipe 2, and the joint 1 is used for being connected with an underground air pressing pipeline to effectively utilize the underground pipeline.

The self-resetting control valve 5 of the embodiment is actually a two-position five-way valve, and comprises two pressure relief ports in addition to the air inlet 6, the first air outlet 7 and the second air outlet 8, wherein each air outlet corresponds to one pressure relief port, and when the valve core moves to a position where the first air outlet 7 is communicated with the air inlet 6, the second air outlet 8 is communicated with the corresponding pressure relief port; when the valve core moves to the position where the second air outlet 8 is communicated with the air inlet 6, the first air outlet 7 is simultaneously communicated with the corresponding pressure relief port. Reference may be made to hand-pulled valves in the prior art for their specific principles.

When the air door locking device is used, the self-resetting control valve 5 is installed at the first air door, specifically, the self-resetting control valve 5 is installed on a door frame on the hinge side of the air door in the first air door, and when the first air door is opened, the jacking plate 4 can be pushed; install double acting cylinder 10 in second air door department, specifically, double acting cylinder 10 installs on the door frame of the swing one side of second air door, installs the ring body on the second air door, has jack 13 in the ring body, can indicate with bolt 12 cooperation through jack 13. When the air door locking device is used, when the first air door is opened, the self-reset control valve 5 is opened, and the double-acting air cylinder 10 and the bolt 12 lock the second air door; when the first damper is closed, the self-reset control valve 5 is closed, and the double-acting cylinder 10 and the latch 12 release the second damper.

In fact, when applied to two air doors, two sets of air door locking devices are required to be equipped, wherein one set is assembled in a forward direction, and the other set is assembled in a reverse direction, specifically, a self-reset control valve in one set of air door locking device is arranged at a first air door, and a double-acting air cylinder is arranged at a second air door; a self-reset control valve in the other set of air door locking device is arranged at the second air door, and a double-acting air cylinder is arranged at the first air door, so that the two air doors are interlocked. During actual installation, the self-reset control valve and the double-acting air cylinder can be installed on a door frame and can also be installed on an air wall where the air door is located.

In this embodiment, the latch 12 constitutes a blocking member at the second damper.

In this embodiment, the valve spool in the self-resetting control valve is slidably fitted on the valve body. In other embodiments, the valve core is rotatably assembled on the valve body, the valve body is sequentially provided with the first air outlet, the air inlet and the second air outlet around the rotation axis of the valve core, and one of the two air outlets can be connected with the air inlet and the other air outlet is separated from the air inlet by the rotation of the valve core. The trigger part at this moment can be a crank arm connected to the valve core, one end of the crank arm is fixed on the valve core, and the other end of the crank arm can be pushed by the air door to drive the valve core to rotate. The spring at this time may be a torsion spring driving the valve element to rotate reversely.

In this embodiment, the stop valve is installed on the air intake duct 2. In other embodiments, the shut-off valve may be eliminated.

In this embodiment, the self-resetting control valve 5 is a two-position five-way valve. In other embodiments, the self-resetting control valve is a two-position four-way valve comprising an air inlet, a first air outlet, a second air outlet and a pressure relief port, wherein one of the first air outlet and the second air outlet is connected with the air inlet, and the other one of the first air outlet and the second air outlet is connected with the pressure relief port.

In this embodiment, the double acting cylinder 10 is depressurized by a self-resetting control valve 5. In other embodiments, the plug body of the double-acting cylinder is provided with the throttling hole, and the throttling hole can not only ensure that the plug body can be pushed to move, but also prevent the cavity from being excessively compressed.

In this embodiment, the locking member is a latch. In other embodiments, the locking component is a stop lever rotatably assembled on the second air door, the stop lever is connected with the piston rod, the stop lever is driven to swing back and forth through the extension and retraction of the piston rod, and the stop lever can swing to a position where the second air door is blocked and can also swing to a position where the second air door is kept away.

In this embodiment, the triggering portion includes a top pressing plate, and the top pressing plate and the first damper are only in a pushing relationship but not in a connecting relationship. In this embodiment, the trigger portion is connected to the first damper, and the return spring is eliminated, and the valve element is driven to reciprocate only by opening and closing the first damper. In other embodiments, the positions of the first air outlet and the second air outlet can be interchanged, so that the valve core can be pulled when the first air door is opened, and the first air outlet is communicated with the air inlet.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A damper latching device characterized by: the air valve comprises a self-resetting control valve (5) arranged at a first air door, wherein the self-resetting control valve (5) comprises a valve body, and an air inlet (6), a first air outlet (7) and a second air outlet (8) are arranged on the valve body;

the valve body is movably assembled with a valve core, the valve core is used for controlling one of the two air outlets to be communicated with the air inlet (6) and the other air outlet to be disconnected with the air inlet (6), the valve core is connected with a triggering part extending to the outside of the valve body, the triggering part is used for driving the valve core to act after the first air door is triggered after the first air door is opened so as to enable the first air outlet (7) to be communicated with the air inlet (6), and the valve core is reset to the position where the second air outlet (8) is communicated with the air inlet (6) after the second air door is closed;

the air door locking device further comprises a double-acting air cylinder (10), the double-acting air cylinder (10) is arranged at the second air door, and a rodless cavity communicated with the first air outlet (7) through a connecting air pipe (9) and a rod cavity communicated with the second air outlet (8) through a connecting air pipe (9) are formed in the double-acting air cylinder (10);

the air door locking device further comprises a locking component, the locking component is movably arranged at the second air door and connected with a piston rod (11) of the double-acting cylinder (10), the locking component is driven to move to a position blocking the second air door to be opened when the piston rod (11) of the double-acting cylinder (10) stretches out, and the locking component is driven to move to a position leaving the second air door when the piston rod (11) of the double-acting cylinder (10) retracts.

2. The damper latch of claim 1, wherein: the locking component is a bolt (12) fixedly arranged on a piston rod (11) of the double-acting air cylinder (10), and the bolt (12) is used for being inserted into a jack of the second air door.

3. The damper latch of claim 1, wherein: the valve core is slidably assembled in the valve body.

4. The damper latch of claim 3, wherein: the triggering portion comprises a jacking plate (4) located outside the valve body, and the jacking plate (4) is used for being jacked by the first air door when the first air door is opened.

5. The damper latch of claim 4, wherein: and a return spring is also arranged between the valve core and the valve body and used for driving the valve core to return to the position where the second air outlet (8) is communicated with the air inlet (6) when the first air door is closed.

6. The damper latch according to any one of claims 1 to 5, wherein: an air inlet pipe (2) is connected to an air inlet (6) of the valve body, and a stop valve (3) is installed on the air inlet pipe (2).

7. The damper latch according to any one of claims 1 to 5, wherein: the air inlet (6) of the valve body is connected with an air inlet pipe (2), the end part of the air inlet pipe (2) is provided with a joint (1), and the joint (1) is used for being connected to an underground air compression pipeline.

8. The damper latch device according to any one of claims 1 to 5, wherein: the pressure relief port is arranged on the valve body and is used for being communicated with the second air outlet (8) when the first air outlet (7) is used for air inlet and communicated with the first air outlet (7) when the second air outlet (8) is used for air inlet.

9. The damper latch of claim 1, wherein: the locking component comprises a stop lever which is rotatably arranged at the second air door, and the piston rod (11) is connected with the stop lever to drive the stop lever to swing in a reciprocating manner.

10. The damper latch of claim 1, wherein: and a piston is arranged in the double-acting cylinder (10) in a sliding manner and comprises a plug body and a piston rod (11), and the plug body is provided with a throttling hole communicated with a rod cavity and a rodless cavity.