CN105253759A - Automatic roller shutter door and use method and application thereof - Google Patents
Automatic roller shutter door and use method and application thereof Download PDFInfo
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- CN105253759A CN105253759A CN201510689783.3A CN201510689783A CN105253759A CN 105253759 A CN105253759 A CN 105253759A CN 201510689783 A CN201510689783 A CN 201510689783A CN 105253759 A CN105253759 A CN 105253759A
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Abstract
The invention relates to an automatic roller shutter door and a use method and application thereof. The automatic roller shutter door comprises a roller shutter, telescopic devices and magnetic closing devices. The magnetic closing devices are arranged on two sides of the roller shutter respectively and attract the lower end of the roller shutter. The telescopic devices are arranged under the magnetic closing devices and make contact with the magnetic closing devices. The telescopic devices drive the magnetic closing devices to achieve automatic opening and closing of the roller shutter door. Compared with a traditional manual cage roller shutter door, the automatic roller shutter door is high in automation degree, high in work efficiency and long in service life, does not need manual operation, and saves time and labor. Compared with an existing semi-automatic roller shutter door, the automatic roller shutter door is simple in structure, and convenient to install, use, maintain and repair.
Description
Technical field
The present invention relates to a kind of automatic shutter and using method thereof and application, particularly relate to a kind of cage automatic shutter, belong to automatic shutter technical field.
Background technology
In mine operation process, cage is absolutely necessary jacking system, the tank curtain door of cage is the opening and closing device of turnover cage, current tank curtain door is artificial open and close mostly, although the tank curtain door cost of artificial unlatching is low, but the problems such as Long-Time Service exists, and switch has some setbacks, fault rate is high, therefore, increasing tank curtain door brings into use autonomous cruise speed system to carry out open and close.
Such as, Chinese patent literature CN204529039U discloses a kind of vertical mancage automatic telescopic tank curtain door, and it mainly comprises cage, curtain door whippletree, whippletree chain sling, flexible rope, driven wheels, initiatively wheels and power part; Power part comprise DC machine and and turbine worm reducer, driving wheel comprises imput shaft and rim pulley; Driven wheels comprise driven shaft and driven sheave, and cage both sides are provided with whippletree slideway, are inside provided with pilot bar; The multiple interval of curtain door whippletree arranges and is flexibly connected by whippletree chain sling, and the two ends of curtain door whippletree arrange ring set, are enclosed within the perimembranous of pilot bar, can be up and down; The bottom of flexible rope is fixedly connected with the curtain door whippletree of bottommost, and successively through the becket bridle of top curtain door whippletree, flexible rope is positioned at the outside of whippletree chain sling.This tank curtain door relies on motor to provide Power output, is rotated and rope promotes and drives the lifting of curtain door whippletree by wheels, and this automatic control mode is comparatively traditional, and complex structure, installation are inconvenient, and repair and maintenance cost is high.
Chinese patent literature CN204324665U provides a kind of mine cage, comprise cage body and automatic extendible door, the left front end of cage body inwall and right front ends are provided with groove, automatic extendible door is made up of retractable door body and upper and lower door beam, beam of visiting is fixed on the front upper end of cage body, beam two ends, Xiamen are arranged in groove, and described retractable door body is assembled by connecting rod, hinge and expansion link.The tank curtain door of this cage realizes open and close by expansion link, hinge and connecting rod, this tank curtain door relies on motor to provide Power output, the stability of motor flexible bar and be handlingly all not so good as hydraulic gear, and the complex structure of roller shutter, inconvenience is installed, repair and maintenance cost is high.
Therefore, the cage rolling screen door that a kind of structure of design is simple, easy to install is needed badly.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of automatic shutter.
The present invention also provides using method and the application of above-mentioned a kind of automatic shutter.
Technical scheme of the present invention is as follows:
A kind of automatic shutter, comprise roller shutter, closed by magnet locking device and retractor device, in the both sides of roller shutter, described closed by magnet locking device is set respectively, closed by magnet locking device is with the adhesive of roller shutter phase or be separated, below closed by magnet locking device, correspondence arranges described retractor device, and retractor device is connected with closed by magnet locking device.The principle of work of automatic shutter of the present invention is, in closed by magnet locking device energising situation, closed by magnet locking device and roller shutter are pulled together, by stretching closed by magnet locking device and roller shutter together jack-up by retractor device, it is made to open rolling screen door, separately can shrink by retractor device and closed by magnet locking device and roller shutter are together left behind, make it close rolling screen door.
Preferably, described closed by magnet attaches together and is set to electromagnetic force lock.
Preferably, described retractor device is hydraulic actuating cylinder, and the bottom that top and the electromagnetic force of hydraulic cylinder piston rod are locked is connected.
Preferably, the bottom of described electromagnetic force lock is provided with groove, and the top of hydraulic cylinder piston rod is provided with a spheroid, and described spheroid embeds in groove, leaves space between spheroid and groove.The advantage of this design is, after rolling screen door is closed, the power-off of electromagnetic force lock, electromagnetic force lock relies on deadweight to be rotated to an angle by the junction of spheroid and groove, electromagnetic force is locked be separated with roller shutter, rolling screen door can be avoided to lock with electromagnetic force in lifting process collide and affect the operation of rolling screen door.
Preferably, described roller shutter bilateral symmetry is provided with absorption iron plate, described electromagnetic force lock is with absorption iron plate phase adhesive or be separated.
Preferably, described automatic shutter also comprises absorption iron plate rail groove, and the both sides that described absorption iron plate rail groove is arranged on roller shutter move up and down in order to guiding absorption iron plate.
Preferably, described automatic shutter also comprises Auxiliary Track support, and the both sides that described Auxiliary Track support is symmetricly set on electromagnetic force lock move up and down in order to the electromagnetic force lock that leads.
Preferably, described automatic shutter also comprises intelligent control system, and described intelligent control system comprises fluid control part and electric control system; Hydraulic control portion divides and comprises Hydraulic Pump and solenoid directional control valve, Hydraulic Pump is connected with hydraulic actuating cylinder by solenoid directional control valve, and electric control system comprises micro controller system, control cabin disconnects main supply switch SB0, cage puts travel switch SB1 in place, piston rod is raised to a travel switch SB2, the full signal switch SB3 of register, piston rod drops to travel switch SB4, a relay K T1, relay K T2, relay K T3, relay K T4, time-delay switch KT1-1, time-delay switch KT1-2, time-delay switch KT2-1, time-delay switch KT2-2, time-delay switch KT3-1 and time-delay switch KT4-1;
Wherein, control cabin disconnects main supply switch SB0, cage puts in place, and travel switch SB1 and relay K T1 is connected into the first branch road, time-delay switch KT1-2 and relay K T2 is connected into the second branch road, time-delay switch KT2-2, piston rod are raised to a travel switch SB2 and relay K T3 and are connected into the 3rd branch road, the full signal switch SB3 of register, piston rod drop to a travel switch SB4 and relay K T4 and are connected into the 4th branch road, and the first branch road, the second branch road, the 3rd branch road and the 4th branch road are in parallel;
Time-delay switch KT1-1 and electromagnetic force lock are connected into the 5th branch road, time-delay switch KT2-1 and Hydraulic Pump are connected into the 6th branch road, time-delay switch KT3-1 and solenoid directional control valve left position motor are connected into the 7th branch road, time-delay switch KT4-1 and solenoid directional control valve right position motor are connected into the 8th branch road, and the 5th branch road, the 6th branch road, the 7th branch road and the 8th branch road are in parallel;
Solenoid directional control valve right position motor and control cabin disconnect main supply switch SB0 and are electrically connected with micro controller system respectively.
A using method for automatic shutter, comprises the following steps,
(1) after micro controller system obtains the feedback signal of position travel switch, micro controller system sends instructions and makes electromagnetic force lock energising startup under relay K T1, electromagnetic force lock and the adhesive of absorption iron plate phase;
(2) micro controller system sends instructions under relay K T2, and that contactless switch is energized is closed, and hydraulic actuating cylinder starts, and the piston rod of hydraulic actuating cylinder stretches out locks upwards jack-up by electromagnetic force, opens rolling screen door;
(3) enter after cage until miner, counting machine sends impulse singla and feeds back to micro controller system, and micro controller system sends instructions and makes solenoid directional control valve operation under relay K T3, and the piston rod of hydraulic actuating cylinder shrinks and drives electromagnetic force lock to retract downwards, electromagnetic force lock strap is moved rolling screen door and is fallen, and rolling screen door is closed;
(4) after rolling screen door is closed, micro controller system sends instructions and solenoid directional control valve cuts out under relay K T4, and then sending instructions under micro controller system makes main supply switch power-off, and after power-off, electromagnetic force lock is separated with absorption iron plate.
A kind of cage, comprises above-mentioned arbitrary described automatic shutter.
Beneficial effect of the present invention is:
Automatic shutter of the present invention is compared with traditional manual cage rolling screen door, and its degree of automation is high, without the need to manual operation, time saving and energy saving, and work efficiency is high, the life-span is long; Compare current Semi-automatic winded curtain door, its structure is simple, easy to install, is convenient to safeguard and maintenance.
Accompanying drawing explanation
Fig. 1 is the block diagram of automatic shutter of the present invention;
Fig. 2 is the front view of automatic shutter of the present invention;
Fig. 3 a is the connection diagram that in the present invention, hydraulic actuating cylinder and electromagnetic force are locked;
Fig. 3 b is the connection section-drawing that in the present invention, hydraulic actuating cylinder and electromagnetic force are locked;
Fig. 4 is hydraulic part operating diagram in the present invention;
Fig. 5 is the circuit connecting relation figure of electric control system in the present invention;
Fig. 6 is the annexation figure of intelligent control part in the present invention;
Wherein: 1, Auxiliary Track support; 2, electromagnetic force lock; 3, roller shutter; 4, roller shutter piston rod; 5, cage; 6, iron plate rail groove is adsorbed; 7, iron plate is adsorbed; 8, hydraulic actuating cylinder; 9, piston rod drops to a travel switch; 10, register; 11, piston rod is raised to a travel switch.
Detailed description of the invention
Below by embodiment, also the present invention will be further described by reference to the accompanying drawings, but be not limited thereto.
Embodiment 1:
The present embodiment provides a kind of automatic shutter, comprises roller shutter 3, retractor device, closed by magnet locking device; Arrange described closed by magnet locking device respectively in the both sides of roller shutter 3, the lower end phase adhesive of closed by magnet locking device and roller shutter 3, below closed by magnet locking device, arrange described retractor device, retractor device contacts with closed by magnet locking device.
As shown in Figure 3 a, 3 b, in the present embodiment, closed by magnet attaches together and is set to electromagnetic force lock 2, and retractor device is hydraulic actuating cylinder 8, and the bottom that top and the electromagnetic force of hydraulic cylinder piston rod lock 2 is connected.Arrange groove in the bottom of electromagnetic force lock 2, the top of hydraulic cylinder piston rod is provided with a spheroid, and spheroid embeds in groove, leaves space between spheroid and groove.After rolling screen door is closed, electromagnetic force locks 2 power-off, electromagnetic force lock 2 relies on deadweight to be rotated to an angle by the junction of spheroid and groove, make electromagnetic force lock 2 and roller shutter 3 be separated, rolling screen door can be avoided to lock with electromagnetic force in lifting process collide and affect the operation of rolling screen door.
Roller shutter 3 bilateral symmetry is provided with absorption iron plate 7, and electromagnetic force lock 2 is with absorption iron plate 7 phase adhesive or be separated.
Automatic shutter also comprises Auxiliary Track support 1, and the both sides that Auxiliary Track support 1 is symmetricly set on electromagnetic force lock 2 move up and down in order to the electromagnetic force lock 2 that leads.
In practical situation, the import of cage and outlet side install the rolling screen door in the present invention respectively, because cage rolling screen door is generally in mine well head and shaft bottom just open and close, hydraulic efficiency pressure system part (comprises hydraulic actuating cylinder, electromagnetic force lock, Hydraulic Pump, fuel tank) and auxiliary guide rail mechanism respectively arrange a set of at well head and shaft bottom, import and outlet side, cage move to well head or shaft bottom out of service time, cage rolling screen door realizes automatic unlatching, the closedown of rolling screen door by this cover hydraulic efficiency pressure system.
Embodiment 2:
The present embodiment provides a kind of automatic shutter, and as described in Example 1, its difference is structure: automatic shutter also comprises absorption iron plate rail groove 6, and the both sides that absorption iron plate rail groove 6 is arranged on roller shutter 3 move up and down in order to guiding absorption iron plate 7.
Embodiment 3:
As Figure 4-Figure 6, the present embodiment provides a kind of automatic shutter, and as described in Example 1, its difference is structure: the physical construction for this automatic shutter has carried out intelligent control system design targetedly.This intelligent control system comprises fluid control part and electric control system; Hydraulic control portion divides and comprises Hydraulic Pump and solenoid directional control valve, Hydraulic Pump is connected with hydraulic actuating cylinder by solenoid directional control valve, and electric control system comprises micro controller system, control cabin disconnects main supply switch SB0, cage puts travel switch SB1 in place, piston rod is raised to a travel switch SB2, the full signal switch SB3 of register, piston rod drops to travel switch SB4, a relay K T1, relay K T2, relay K T3, relay K T4, time-delay switch KT1-1, time-delay switch KT1-2, time-delay switch KT2-1, time-delay switch KT2-2, time-delay switch KT3-1 and time-delay switch KT4-1;
Wherein, control cabin disconnects main supply switch SB0, cage puts in place, and travel switch SB1 and relay K T1 is connected into the first branch road, time-delay switch KT1-2 and relay K T2 is connected into the second branch road, time-delay switch KT2-2, piston rod are raised to a travel switch SB2 and relay K T3 and are connected into the 3rd branch road, the full signal switch SB3 of register, piston rod drop to a travel switch SB4 and relay K T4 and are connected into the 4th branch road, and the first branch road, the second branch road, the 3rd branch road and the 4th branch road are in parallel;
Time-delay switch KT1-1 and electromagnetic force lock are connected into the 5th branch road, time-delay switch KT2-1 and Hydraulic Pump are connected into the 6th branch road, time-delay switch KT3-1 and solenoid directional control valve left position motor are connected into the 7th branch road, time-delay switch KT4-1 and solenoid directional control valve right position motor are connected into the 8th branch road, and the 5th branch road, the 6th branch road, the 7th branch road and the 8th branch road are in parallel;
Solenoid directional control valve right position motor and control cabin disconnect main supply switch SB0 and are electrically connected with micro controller system respectively.Cage arranges counting machine 10, and the piston rod described in the installation of both sides up and down of cage doorframe drops to a travel switch 9 and piston rod is raised to a travel switch 11.
In the present embodiment, hydraulic tubing provides power by Hydraulic Pump, the trend of solenoid directional control valve oil circuit control, realizes rise and the landing of hydraulic cylinder piston rod.When left position got to by solenoid directional control valve time, hydraulic oil promotes hydraulic cylinder piston rod and rises, and realizes the unlatching of rolling screen door; When right position got to by solenoid directional control valve time, hydraulic oil at the flows by action of gravity oil sump tank of hydraulic cylinder piston rod, electromagnetic force lock and roller shutter, can realize the closedown of rolling screen door.
Embodiment 4:
An operational process for automatic shutter as described in Example 3, its control step is as follows,
(1) cage arrives driving surface (such as during shaft bottom), and trigger parking and to put in place travel switch SB1, slug relay KT1 starts working;
(2) time-delay switch KT1-1 closes, and electromagnetic force lock M1 starts, and the absorption of electromagnetic force lock is closed, and meanwhile, time-delay switch KT1-2 closes, and slug relay KT2 starts timing;
(3) slug relay K switch T2-1 closes, and Hydraulic Pump M2 starts and carries out fuel feeding, and meanwhile, time-delay switch KT2-2 closes, and slug relay KT3 starts timing;
(4) time-delay switch KT3-1 closes, and solenoid directional control valve left position motor M 3 obtains electric, and hydraulic cylinder piston rod is risen, and promotes cage roller shutter and opens;
(5) when hydraulic cylinder piston rod rises to specified altitude assignment, triggering piston rod is raised to a travel switch SB2 and disconnects, slug relay KT3 power-off, and slug relay K switch T3-1 disconnects, and the left position M3 of solenoid directional control valve disconnects and gets to meta;
(6) cage enters people, after miner all enters or leaves, personnel's register exports full or empty member's signal makes SB3 close, Time delay relay K T4 obtains electric, slug relay K switch T4-1 closes, solenoid directional control valve right position motor M 4 starts, and hydraulic cylinder piston rod, electromagnetic force lock and roller shutter fall after rise;
(7) when hydraulic cylinder piston rod drops to assigned address, triggering drops to a travel switch SB4 and disconnects, and solenoid directional control valve right position motor M 4 stops, and meta got to by solenoid directional control valve;
(8) solenoid directional control valve right position motor M 4 danger signal is transferred to micro controller system, and micro controller system output signal makes SB0 disconnect, and electromagnetic force lock M1 and Hydraulic Pump M2 quits work, and the whole rise of cage roller shutter and descent complete automatically.
Follow-up cage upwards can run in mine, and when running to pithead position, according to above-mentioned said step, cage realizes automatic unlatching, the cut out of roller shutter at well head.
Embodiment 5:
The present embodiment provides a kind of cage, and it comprises the automatic shutter described in embodiment 3.
Claims (10)
1. an automatic shutter, it is characterized in that, comprise roller shutter, closed by magnet locking device and retractor device, in the both sides of roller shutter, described closed by magnet locking device is set respectively, closed by magnet locking device is with the adhesive of roller shutter phase or be separated, below closed by magnet locking device, correspondence arranges described retractor device, and retractor device is connected with closed by magnet locking device.
2. automatic shutter as claimed in claim 1, is characterized in that, described closed by magnet attaches together and is set to electromagnetic force lock.
3. automatic shutter as claimed in claim 2, it is characterized in that, described retractor device is hydraulic actuating cylinder, and the bottom that top and the electromagnetic force of hydraulic cylinder piston rod are locked is connected.
4. automatic shutter as claimed in claim 3, is characterized in that, the bottom of described electromagnetic force lock is provided with groove, and the top of hydraulic cylinder piston rod is provided with a spheroid, and described spheroid embeds in groove, leaves space between spheroid and groove.
5. automatic shutter as claimed in claim 2, is characterized in that, described roller shutter bilateral symmetry is provided with absorption iron plate, and described electromagnetic force lock is with absorption iron plate phase adhesive or be separated.
6. automatic shutter as claimed in claim 5, is characterized in that, described automatic shutter also comprises absorption iron plate rail groove, and the both sides that described absorption iron plate rail groove is arranged on roller shutter move up and down in order to guiding absorption iron plate.
7. automatic shutter as claimed in claim 2, it is characterized in that, described automatic shutter also comprises Auxiliary Track support, and the both sides that described Auxiliary Track support is symmetricly set on electromagnetic force lock move up and down in order to the electromagnetic force lock that leads.
8. automatic shutter as claimed in claim 3, it is characterized in that, described automatic shutter also comprises intelligent control system, and described intelligent control system comprises fluid control part and electric control system; Hydraulic control portion divides and comprises Hydraulic Pump and solenoid directional control valve, Hydraulic Pump is connected with hydraulic actuating cylinder by solenoid directional control valve, and electric control system comprises micro controller system, control cabin disconnects main supply switch SB0, cage puts travel switch SB1 in place, piston rod is raised to a travel switch SB2, the full signal switch SB3 of register, piston rod drops to travel switch SB4, a relay K T1, relay K T2, relay K T3, relay K T4, time-delay switch KT1-1, time-delay switch KT1-2, time-delay switch KT2-1, time-delay switch KT2-2, time-delay switch KT3-1 and time-delay switch KT4-1;
Wherein, control cabin disconnects main supply switch SB0, cage puts in place, and travel switch SB1 and relay K T1 is connected into the first branch road, time-delay switch KT1-2 and relay K T2 is connected into the second branch road, time-delay switch KT2-2, piston rod are raised to a travel switch SB2 and relay K T3 and are connected into the 3rd branch road, the full signal switch SB3 of register, piston rod drop to a travel switch SB4 and relay K T4 and are connected into the 4th branch road, and the first branch road, the second branch road, the 3rd branch road and the 4th branch road are in parallel;
Time-delay switch KT1-1 and electromagnetic force lock are connected into the 5th branch road, time-delay switch KT2-1 and Hydraulic Pump are connected into the 6th branch road, time-delay switch KT3-1 and solenoid directional control valve left position motor are connected into the 7th branch road, time-delay switch KT4-1 and solenoid directional control valve right position motor are connected into the 8th branch road, and the 5th branch road, the 6th branch road, the 7th branch road and the 8th branch road are in parallel;
Solenoid directional control valve right position motor and control cabin disconnect main supply switch SB0 and are electrically connected with micro controller system respectively.
9. a using method for the automatic shutter as described in any one of claim 1-8, comprises the following steps,
(1) after micro controller system obtains the feedback signal of position travel switch, micro controller system sends instructions and makes electromagnetic force lock energising startup under relay K T1, electromagnetic force lock and the adhesive of absorption iron plate phase;
(2) micro controller system sends instructions under relay K T2, and that contactless switch is energized is closed, and hydraulic actuating cylinder starts, and the piston rod of hydraulic actuating cylinder stretches out locks upwards jack-up by electromagnetic force, opens rolling screen door;
(3) enter after cage until miner, counting machine sends impulse singla and feeds back to micro controller system, and micro controller system sends instructions and makes solenoid directional control valve operation under relay K T3, and the piston rod of hydraulic actuating cylinder shrinks and drives electromagnetic force lock to retract downwards, electromagnetic force lock strap is moved rolling screen door and is fallen, and rolling screen door is closed;
(4) after rolling screen door is closed, micro controller system sends instructions and solenoid directional control valve cuts out under relay K T4, and then sending instructions under micro controller system makes main supply switch power-off, and after power-off, electromagnetic force lock is separated with absorption iron plate.
10. a cage, comprises the automatic shutter according to any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510689783.3A CN105253759B (en) | 2015-10-21 | 2015-10-21 | A kind of automatic shutter and its using method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510689783.3A CN105253759B (en) | 2015-10-21 | 2015-10-21 | A kind of automatic shutter and its using method and application |
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| Publication Number | Publication Date |
|---|---|
| CN105253759A true CN105253759A (en) | 2016-01-20 |
| CN105253759B CN105253759B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510689783.3A Expired - Fee Related CN105253759B (en) | 2015-10-21 | 2015-10-21 | A kind of automatic shutter and its using method and application |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110928163A (en) * | 2019-12-23 | 2020-03-27 | 安徽卓锐三维科技有限公司 | Automatic closing structure of bin gate for laser printer |
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| JPS5869974A (en) * | 1981-10-21 | 1983-04-26 | 東洋シャッター株式会社 | Air type opening and closing apparatus of shutter |
| CN203143897U (en) * | 2013-03-15 | 2013-08-21 | 济宁市三圣机械有限公司 | Coal mine vertical shaft type lifting cage automated hydraulic rolling door |
| CN203531709U (en) * | 2013-11-05 | 2014-04-09 | 王恒 | Electromagnetic roller shutter door |
| CN203529681U (en) * | 2013-11-15 | 2014-04-09 | 江苏中矿科汇矿业科技有限公司 | Automatic cage curtain door for mine cage |
| CN203568653U (en) * | 2013-10-30 | 2014-04-30 | 济宁东达机电有限责任公司 | Cage automatic rolling door |
| CN204529039U (en) * | 2015-04-02 | 2015-08-05 | 河南理工大学 | Vertical mancage automatic telescopic tank curtain door |
| CN205061313U (en) * | 2015-10-21 | 2016-03-02 | 山东科技大学 | Automatic rolling slats door and cage |
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2015
- 2015-10-21 CN CN201510689783.3A patent/CN105253759B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5869974A (en) * | 1981-10-21 | 1983-04-26 | 東洋シャッター株式会社 | Air type opening and closing apparatus of shutter |
| CN203143897U (en) * | 2013-03-15 | 2013-08-21 | 济宁市三圣机械有限公司 | Coal mine vertical shaft type lifting cage automated hydraulic rolling door |
| CN203568653U (en) * | 2013-10-30 | 2014-04-30 | 济宁东达机电有限责任公司 | Cage automatic rolling door |
| CN203531709U (en) * | 2013-11-05 | 2014-04-09 | 王恒 | Electromagnetic roller shutter door |
| CN203529681U (en) * | 2013-11-15 | 2014-04-09 | 江苏中矿科汇矿业科技有限公司 | Automatic cage curtain door for mine cage |
| CN204529039U (en) * | 2015-04-02 | 2015-08-05 | 河南理工大学 | Vertical mancage automatic telescopic tank curtain door |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110928163A (en) * | 2019-12-23 | 2020-03-27 | 安徽卓锐三维科技有限公司 | Automatic closing structure of bin gate for laser printer |
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| CN105253759B (en) | 2017-03-08 |
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Granted publication date: 20170308 Termination date: 20211021 |