CN102776850B - Gate device of automatic ticket checker - Google Patents
Gate device of automatic ticket checker Download PDFInfo
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- CN102776850B CN102776850B CN201110118558.6A CN201110118558A CN102776850B CN 102776850 B CN102776850 B CN 102776850B CN 201110118558 A CN201110118558 A CN 201110118558A CN 102776850 B CN102776850 B CN 102776850B
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- fan door
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Abstract
The invention discloses a gate device of an automatic ticket checker. The gate device comprises a driving mechanism, a fan door, a transmission piece, at least one elastic component, at least one detection unit and a controller, wherein the fan door can be pivotally in transmission connection with the driving mechanism so as to open or close a ticket checking channel; the transmission piece is located on a transmission path between the fan door and the driving mechanism, so that the fan door can be deflected by a first reserved angle towards a fan door opening direction from an initial position relative to the driving mechanism; the at least one elastic component enables the fan door to stay at the initial position relative to the driving mechanism; the at least detection unit is used for detecting whether the fan door is deflected to a second reserved angle from the initial position or not; and the controller is used for controlling the driving mechanism, and controlling the driving mechanism to enable the fan door to open the ticket checking channel when the detection unit detects that the fan door is deflected by the second reserved angle from the initial position. According to the gate device, when the fan door is extruded by external force so as to be rotated relative to the driving mechanism, the fan door is controlled to open the ticket checking channel, so that the problem that equipment is damaged easily when passengers forcedly pass through a gate is avoided.
Description
Technical field
The present invention relates to a kind of valve system of automatic ticket checker.
Background technology
Automatic ticket checker is extensive use in subway, high-speed railway and inter-city passenger rail.Automatic ticket checker comprises ticket-checked device and valve system, and when passenger's ticket is after ticket-checked device is proved to be successful, gate is opened, and passenger lets pass; Otherwise gate locking, stops passenger to enter the station or set off.
Fig. 1 is the schematic diagram of the valve system of prior art.As shown in Figure 1, the driving mechanism 1 ' of valve system can drive fan door 2 ' 3 ' rotation around the shaft, makes fan door 2 ' be positioned at the primary importance that ticket-checking pass way is opened or the second place that ticket-checking pass way is closed.When driving mechanism 1 ' drives fan door 2 ' to rotate to the second place, retaining mechanism 4 ' coordinates with fan door 2 ', will fan door 2 ' and be limited to the second place, thereby stop that passenger passes through ticket-checking pass way by force.
The problem of above-mentioned valve system is, if passenger be applied to during by force by ticket-checking pass way the power of fan door 2 ' be greater than fan door 2 ' or retaining mechanism 4 ' be subject to force intensity time, fan door 2 ' or retaining mechanism 4 ' can be damaged.
Summary of the invention
The invention provides and a kind ofly passenger, can avoid by force the valve system of device damage during the gate by automatic ticket checker.
For this reason, the invention provides a kind of valve system of automatic ticket checker, comprising: driving mechanism; Fan door, is in transmission connection with driving mechanism pivotly, to open or the ticket-checking pass way of closed automatic ticket checker; Driving member, in the drive path between fan door and driving mechanism, makes fan door by initial position, to fan door, open direction deflection the first predetermined angular with respect to driving mechanism; At least one flexible member, makes fan door remain on initial position with respect to driving mechanism; Whether at least one detecting unit, open direction deflection the second predetermined angular by initial position to fan door for detection of fan door; And controller, for controlling driving mechanism, and when detecting unit detects fan door by initial position deflection the second predetermined angular, control driving mechanism and make fan door open ticket-checking pass way.
Further, above-mentioned driving member has the pedestal that is connected with driving mechanism, be positioned at drive-connecting shaft on pedestal and around drive-connecting shaft be fan-shaped configuration for limiting the first confined planes and second confined planes of fan door angle range, wherein, the articulated section of fan door and the drive-connecting shaft of driving member are articulated.
Further, above-mentioned driving member also comprises take the eccentric circular ring that drive-connecting shaft is that the center of circle arranges, the both ends of the surface that the first confined planes and the second confined planes are eccentric circular ring.
Further, above-mentioned at least one flexible member comprises the first flexible member, and the initial position of fan door is the position connecting with the first confined planes or the second confined planes.
Further, above-mentioned at least one detecting unit be included on driving member, arrange for detection of fan door whether with respect to the first sensor of driving mechanism deflection the second predetermined angular, wherein, the second predetermined angular is less than the first predetermined angular.
Further, above-mentioned fan door have the first bearing surface of facing mutually with the first confined planes of driving member, with the second bearing surface that the second confined planes of driving member is faced mutually, wherein, the first flexible member is connected between the first confined planes and the first bearing surface.
Further, above-mentioned at least one flexible member comprises the first flexible member and the second flexible member, and the initial position of fan door is the equilbrium position of departing from the first confined planes and the second confined planes.
Further, above-mentioned at least one detecting unit comprise be separately positioned on driving member both sides, equilbrium position for detection of fan door whether with respect to first sensor and second sensor of driving mechanism deflection the second predetermined angular, wherein, the second predetermined angular is less than the first predetermined angular.
Further, the second bearing surface that above-mentioned fan door has the first bearing surface of facing mutually with the first confined planes of driving member, faces mutually with the second confined planes of driving member, wherein, the first flexible member is connected between the first confined planes and the first bearing surface, and the second flexible member is connected between the second confined planes and the second bearing surface.
Further, above-mentioned driving mechanism comprises motor and transmission mechanism.
In the present invention, when fan door is not subject to External Force Acting, driving mechanism drives driving member to rotate with fan door is synchronous; When fan door is subject to External Force Acting, fan door detection trigger assembly after driving member rotates set angle sends and represents the abnormal detection signal of fan door, the controlling organization of valve system is controlled driving mechanism according to this abnormal detection signal and is driven driving member and fan door to open ticket-checking pass way, thus the problem of easy damage equipment while avoiding passenger by force by gate.
Except object described above, feature and advantage, other object, feature and advantage that the present invention has, be described in further detail in connection with accompanying drawing.
Accompanying drawing explanation
Form this manual a part, for further understanding accompanying drawing of the present invention, show the preferred embodiments of the present invention, and be used for illustrating principle of the present invention together with manual.In figure:
Fig. 1 is the schematic diagram of the valve system of prior art;
Fig. 2 is according to the front view of the valve system of first embodiment of the invention;
Fig. 3 a is according to the top view of the valve system of first embodiment of the invention, and wherein, fan door is positioned at primary importance;
Fig. 3 b is according to the top view of the valve system of first embodiment of the invention, and wherein, fan door is positioned at the second place;
Fig. 3 c is the driving member schematic diagram of valve system according to an embodiment of the invention;
Fig. 4 is according to the top view of the valve system of second embodiment of the invention; And
Fig. 5 is according to the front view of the valve system of third embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 2 is the front view of the valve system that provides according to first embodiment of the invention.As shown in Figure 2, valve system comprises driving mechanism, driving member 2, fan door 3, detecting element 4 and elastic parts.
Wherein, driving mechanism drives fan door to press direction initialization and angular turn for outputting power.Driving member 2, between driving mechanism and fan door 3, is connected with fan door 3 with driving mechanism, for giving fan door 3 by the transmission of power of driving mechanism output simultaneously.Elastic parts is between driving member 2 and fan door 3, for limiting the size of the transmitting torque between fan door 3 and driving member 2.Detection components is between fan door 3 and driving member 2, for detection of the rotational angle of fan door 3 relative driving members 2.
Below in conjunction with Fig. 3 a, Fig. 3 b and Fig. 3 c, the valve system of the present embodiment is elaborated.Driving mechanism comprises motor 11, and the controlling organization (not shown) of valve system is controlled motor 11 energising or power-off, thereby the driving shaft of drive motors 11 rotates or stops.
Driving member 2 is fixedly connected with the driving shaft of motor 11, can be with the driving shaft synchronous rotary of motor 11.Jointed shaft 21, the first confined planes 22 and the second confined planes 23 that driving member 2 comprises pedestal 24, on pedestal 24, along fan door 3 short transverses, extends.Fan door 3 comprises hinge hole 31, the first bearing surface 32 and the second bearing surface 33 extending along fan door short transverse.
After the hinge hole 31 of fan door 3 coordinates with driving member 2 is hinged through jointed shaft 21, the first bearing surface 32 of fan door 3 is relative with the first confined planes 22 of driving member 2, the second bearing surface 33 of fan door 3 is relative with the second confined planes 23 of driving member 2, interval setpoint distance between the first bearing surface 32 and the first confined planes 22 and/or between the second bearing surface 33 and the second confined planes 23.
In the present embodiment, between the first bearing surface 32 of fan door 3 and the first confined planes 22 of driving member 2, at a distance of setpoint distance, form interval, the second bearing surface 33 and second confined planes 23 of driving member 2 of fan door 3 are in contact with one another, and therefore, between driving member 2 and fan door 3, are provided with an interval, place.
Elastic parts comprises at least one flexible member, the interval between driving member 2 and fan door 3, and the quantity at the interval arranging between the quantity of flexible member and driving member 2 and fan door 3 matches, and flexible member can be stage clip, extension spring or leaf spring.
In the present embodiment, owing to being provided with an interval, place between driving member 2 and fan door 3, therefore, elastic parts comprises the first flexible member 51.Wherein, one end of the first flexible member 51 is connected with the first bearing surface 32, and its other end is connected with the first confined planes 22.The elastic force of the first flexible member 51 makes the first bearing surface 32 of fan door 3 and the first confined planes 22 of driving member 2 keep setpoint distance, and make the second bearing surface 33 of fan door 3 and the second confined planes 23 close contacts of driving member 2, therefore, when there is no External Force Acting, fan door 3 keeps relative equilibrium with driving member 2, and fan door 3 can be with driving member 2 synchronous rotaries.
When having external force to be applied on fan door 3, if this external force is greater than the first flexible member 51 elastic force, fan door 3 can rotate to the direction of the first confined planes 22 near driving member 2 around jointed shaft 21.
Detection components comprises at least one sensor, interval between fan door 3 and driving member 2, for detection of fan door 3 predetermined angulars with respect to driving member 2 deflections (the second predetermined angular), this predetermined angular be preferably less than fan door can with respect to tumbler can deflection maximum predetermined angular (the first predetermined angular).The interval quantity arranging between the quantity of sensor and driving member 2 and fan door 3 matches.Sensor can be mechanical sensor, can be also photoelectric sensor.In the present embodiment, owing to being provided with an interval, place between driving member 2 and fan door 3, therefore, detecting element comprises first sensor 41.Wherein, first sensor 41 is fixedly connected with the first confined planes 22 of driving member 2.
When fan door 3 keeps relative equilibrium with driving member 2, due to the first bearing surface 32 of fan door 3 and the first confined planes 22 maintenance setpoint distances of driving member 2, therefore, first sensor 41 cannot detect fan door 3, export the first detection signal, represent that fan door is in normal condition.When fan door 3 is subject to External Force Acting, the elastic force that overcomes the first flexible member rotates after set angles with respect to driving member 2, the first bearing surface 32 of fan door 3 contacts with first sensor 41, and first sensor 41 output the second detection signals, represent the abnormality of fan door in being pushed by external force.
Certainly, first sensor 41 also can be fixedly connected with the first bearing surface 32 of fan door 3.When fan door 3 keeps relative equilibrium with driving member 2, first sensor 41 cannot detect driving member 2, and output the first detection signal represents that fan door is in normal condition.When fan door 3 is subject to External Force Acting, overcome the elastic force of the first flexible member when driving member 2 rotates set angle, the first confined planes 22 of driving member 2 contacts with first sensor 41, and first sensor 41 output the second detection signals, represent the abnormality of fan door in being pushed by external force.
Below in conjunction with Fig. 3 a, Fig. 3 b, simply introduce the operating principle of valve system of the present invention.
When valve system is normally worked, fan door 3 keeps relative equilibrium by elastic parts and driving member 2, and fan door 3 can be with driving member 2 synchronous rotaries.Therefore, driving mechanism drives driving member 2 to rotate set angles, the primary importance that fan door is positioned at ticket-checking pass way is opened (as Fig. 3 a) or the second place that ticket-checking pass way is closed (as Fig. 3 b).
When fan door 3 is positioned at the second place that ticket-checking pass way is closed, if by force by ticket-checking pass way, fanning door 3, passenger is subject to external force impetus, when this external force is greater than the first flexible member 51, fan door 3 starts around jointed shaft 21 with respect to driving member 2 rotations.When fan door 3 is subject to External Force Acting when driving member 2 rotates set angle, trigger first sensor 41 and detect, therefore, first sensor 41 output fan doors are in the second abnormal detection signal.The controlling organization of valve system receives after the second detection signal of first sensor 41 outputs, controlling driving mechanism drives driving member 2 to rotate to the direction of opening ticket-checking pass way, fan door 3 is with driving member synchronous rotary, thereby ticket-checking pass way is opened, make passenger cannot continue to apply external force to fan door, thereby prevent that valve system is damaged.
Fig. 4 is the top view of the valve system that provides of second embodiment of the invention.The difference of the present embodiment and the first embodiment is, between the first bearing surface 32 of fan door 3 and the first confined planes 22 of driving member 2, at a distance of setpoint distance, form interval, between the second bearing surface 33 of fan door 3 and the second confined planes 23 of driving member 2, also at a distance of setpoint distance, form interval.Owing to being provided with two intervals, place between fan door 3 and driving member 2, therefore, elastic parts comprises i.e. the first flexible member 51 and the second flexible member 52.Wherein, one end of the first flexible member 51 is connected with the first bearing surface 32, and its other end is connected with the first confined planes 22.One end of the second flexible member 52 is connected with the second bearing surface 33, and its other end is connected with the second confined planes 23, and the first flexible member 51 and the second flexible member 52 elastic force equate.
Therefore, when there is no External Force Acting, fan door 3 and driving member 2 keep the state of relative equilibriums, and fan door 3 can be with driving member 2 synchronous rotaries.When having external force to be applied on fan door 3, if this external force is greater than the first flexible member 51 and the second flexible member 52 elastic force sums, fan door 3 can rotate with respect to driving member 2 around jointed shaft 21.
Detection components comprises two sensors, i.e. first sensor 41 and the second sensor 42, and wherein, first sensor 41 is connected with the first confined planes 22 of driving member 2, and the second sensor 42 is connected with the second confined planes 23 of driving member 2.When the state of fan door 3 with driving member 2 maintenance relative equilibriums, first sensor 41 and the second sensor 42 all cannot detect fan door 3, and output the first detection signal represents to fan door 3 in normal condition.
The elastic force that overcomes elastic parts when fan door 3 with respect to driving member 2 clockwise or be rotated counterclockwise after set angle, the first bearing surface 32 of fan door 3 contacts with first sensor 41, or the second bearing surface 33 of fan door 3 contacts with the second sensor 42, first sensor 41 or second sensor 42 output the second detection signals, represent the abnormality of fan door 3 in being pushed by external force.
The operating principle of the present embodiment is same as the previously described embodiments, repeats no more herein.The present embodiment, owing to being provided with two flexible members and two sensors, therefore can detect clockwise and impose on counterclockwise the external force of fan door.
Fig. 5 is according to the front view of the valve system of third embodiment of the invention.
The difference of the present embodiment and the second embodiment is, driving mechanism comprises motor 11 and driving gear set 12, wherein, driving gear set 12 comprises gear 12a and gear 12b, gear 12a is fixedly connected with the driving shaft of motor 11, gear 12b is fixedly connected with driving member 2, gear 12a and gear 12b engaged transmission.It should be noted that, driving gear set 12 also can be comprised of intermeshing worm gear and worm screw.Motor 11 is in transmission connection by driving gear set 12 and driving member 2, thereby drives fan door 3 to rotate between primary importance and the second place.
Visible by above description, in the present invention, the fan door of valve system and driving member is hinged and keep relative equilibrium by elastic parts is provided for detecting the detection components of the rotational angle of fan door 3 relative driving members 2 between fan door and driving member.When fan door is not subject to External Force Acting, driving mechanism drives driving member to rotate with fan door is synchronous; When fan door is subject to External Force Acting, fan door detection trigger assembly after driving member rotates set angle sends and represents the abnormal detection signal of fan door, the controlling organization of valve system is controlled driving mechanism according to this abnormal detection signal and is driven driving member and fan door to open ticket-checking pass way, thus the problem of easy damage equipment while avoiding passenger by force by gate.
In the present invention, by driving member, driving mechanism and fan door are in transmission connection, and fan door can be opened direction deflection one predetermined angular by initial position to fan door with respect to driving mechanism under external force.So, can detect and whether have people to pass through by force ticket-checking pass way by detecting unit, wherein, initial position is that fan door synchronize the position of rotation under the effect of the elastic force of flexible member with driving mechanism, it is normally unidirectional that fan door is opened direction, as in the first embodiment shown, can certainly be two-way, as shown in the second embodiment, to avoid passenger's forward or the reverse damage causing to valve system during by force by ticket-checking pass way.
It is pointed out that in the various embodiments described above, driving member is fixedly attached on driving mechanism, and driving member and driving mechanism synchronously rotate all the time, and fan door is with respect to driving mechanism deflection with respect to the deflection of driving member.In other embodiments, it is upper that driving member can be fixed to fan door, and driving member like this and fan door synchronously rotate all the time, and driving member also fans door with respect to driving mechanism deflection with respect to the deflection of driving mechanism.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Description of reference numerals
2 driving member 3 fan doors
11 motors
12 driving gear set 12a, 12b gear
21 jointed shaft 22 first confined planes
23 second confined planes 24 pedestals
31 hinge hole 32 first bearing surfaces
33 second bearing surface 51 first flexible members
41 first sensor 42 second sensors
51 first flexible member 52 second flexible members.
Claims (10)
1. a valve system for automatic ticket checker, comprising:
Driving mechanism;
Fan door, is in transmission connection with described driving mechanism pivotly, to open or the ticket-checking pass way of closed described automatic ticket checker; It is characterized in that, also comprise:
Driving member, in the drive path between described fan door and described driving mechanism, makes described fan door by initial position, to fan door, open direction deflection the first predetermined angular with respect to described driving mechanism;
At least one flexible member, makes described fan door remain on described initial position with respect to described driving mechanism;
Whether at least one detecting unit, open direction deflection the second predetermined angular by described initial position to fan door for detection of described fan door; And
Controller, for controlling described driving mechanism, and detects described fan door at described detecting unit and makes described fan open described ticket-checking pass way by controlling described driving mechanism during the second predetermined angular described in described initial position deflection.
2. the valve system of automatic ticket checker according to claim 1, it is characterized in that, described driving member has the pedestal that is connected with described driving mechanism, be positioned at drive-connecting shaft on described pedestal and around described drive-connecting shaft be fan-shaped configuration for limiting the first confined planes and second confined planes of fan door angle range, wherein, the articulated section of described fan door and the drive-connecting shaft of described driving member are articulated.
3. the valve system of automatic ticket checker according to claim 2, is characterized in that, described driving member also comprises take the eccentric circular ring that described drive-connecting shaft is that the center of circle arranges, the both ends of the surface that described the first confined planes and the second confined planes are described eccentric circular ring.
4. the valve system of automatic ticket checker according to claim 2, is characterized in that, described at least one flexible member comprises the first flexible member, and the initial position of described fan door is the position connecting with described the first confined planes or the second confined planes.
5. the valve system of automatic ticket checker according to claim 4, it is characterized in that, described at least one detecting unit be included on described driving member, arrange for detection of described fan door whether with respect to the first sensor of the second predetermined angular described in described driving mechanism deflection, wherein, described the second predetermined angular is less than described the first predetermined angular.
6. the valve system of automatic ticket checker according to claim 2, it is characterized in that, described at least one flexible member comprises the first flexible member, the second bearing surface that described fan door has the first bearing surface of facing mutually with the first confined planes of described driving member, faces mutually with the second confined planes of described driving member, wherein, described the first flexible member is connected between described the first confined planes and the first bearing surface, and the initial position of described fan door is the position that described the second bearing surface and described the second confined planes connect.
7. the valve system of automatic ticket checker according to claim 2, it is characterized in that, described at least one flexible member comprises the first flexible member and the second flexible member, and the initial position of described fan door is the equilbrium position of departing from described the first confined planes and the second confined planes.
8. the valve system of automatic ticket checker according to claim 7, it is characterized in that, described at least one detecting unit comprise be separately positioned on described driving member both sides, described equilbrium position for detection of described fan door whether with respect to first sensor and second sensor of the second predetermined angular described in described driving mechanism deflection, wherein, described the second predetermined angular is less than described the first predetermined angular.
9. the valve system of automatic ticket checker according to claim 7, it is characterized in that, the second bearing surface that described fan door has the first bearing surface of facing mutually with the first confined planes of described driving member, faces mutually with the second confined planes of described driving member, wherein, described the first flexible member is connected between described the first confined planes and the first bearing surface, and the second flexible member is connected between described the second confined planes and the second bearing surface.
10. the valve system of automatic ticket checker according to claim 1, is characterized in that, described driving mechanism comprises motor and transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110118558.6A CN102776850B (en) | 2011-05-09 | 2011-05-09 | Gate device of automatic ticket checker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110118558.6A CN102776850B (en) | 2011-05-09 | 2011-05-09 | Gate device of automatic ticket checker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102776850A CN102776850A (en) | 2012-11-14 |
| CN102776850B true CN102776850B (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110118558.6A Active CN102776850B (en) | 2011-05-09 | 2011-05-09 | Gate device of automatic ticket checker |
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| CN (1) | CN102776850B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943923B (en) * | 2012-11-21 | 2015-01-21 | 浙江大学 | Anti-floating box culvert structure for pipelines in soft soil |
| CN106592464B (en) * | 2017-03-13 | 2022-04-08 | 深圳市西莫罗智能科技有限公司 | Novel swing gate with double coaxial cores |
| JP7044037B2 (en) * | 2018-11-14 | 2022-03-30 | オムロン株式会社 | Gate device and automatic ticket gate equipped with it |
| CN109457638B (en) * | 2018-12-28 | 2024-03-19 | 宁波隆诚轨道交通科技股份有限公司 | Core structure of ticket checking machine door |
| CN109841005B (en) * | 2019-02-20 | 2021-07-02 | 广西华威科技有限公司 | Robot capable of automatically checking tickets, issuing and recycling 3D glasses |
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| CN1661195A (en) * | 2004-02-25 | 2005-08-31 | 上海华虹计通智能卡***有限公司 | Mechanism of blocking automatic fan-shaped door |
| CN201411641Y (en) * | 2009-06-08 | 2010-02-24 | 广州市地下铁道总公司 | Leaf door of automatic ticket checker for rail transportation |
| JP3163505U (en) * | 2010-05-24 | 2010-10-21 | 株式会社テック・アイ・マシナリー | Gate safety shut-off device |
| CN201704648U (en) * | 2010-03-23 | 2011-01-12 | 张建新 | Swing type secure channel |
| CN201741190U (en) * | 2010-07-05 | 2011-02-09 | 杨国交 | Door leaf device of automatic ticket checker |
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- 2011-05-09 CN CN201110118558.6A patent/CN102776850B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661195A (en) * | 2004-02-25 | 2005-08-31 | 上海华虹计通智能卡***有限公司 | Mechanism of blocking automatic fan-shaped door |
| CN201411641Y (en) * | 2009-06-08 | 2010-02-24 | 广州市地下铁道总公司 | Leaf door of automatic ticket checker for rail transportation |
| CN201704648U (en) * | 2010-03-23 | 2011-01-12 | 张建新 | Swing type secure channel |
| JP3163505U (en) * | 2010-05-24 | 2010-10-21 | 株式会社テック・アイ・マシナリー | Gate safety shut-off device |
| CN201741190U (en) * | 2010-07-05 | 2011-02-09 | 杨国交 | Door leaf device of automatic ticket checker |
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| Publication number | Publication date |
|---|---|
| CN102776850A (en) | 2012-11-14 |
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