CN112593836A - Laboratory automatic safety door - Google Patents
Laboratory automatic safety door Download PDFInfo
- Publication number
- CN112593836A CN112593836A CN202011350402.6A CN202011350402A CN112593836A CN 112593836 A CN112593836 A CN 112593836A CN 202011350402 A CN202011350402 A CN 202011350402A CN 112593836 A CN112593836 A CN 112593836A
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- CN
- China
- Prior art keywords
- groove
- cross rod
- circular saw
- automatic safety
- safety door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B11/00—Means for allowing passage through fences, barriers or the like, e.g. stiles
- E06B11/02—Gates; Doors
- E06B11/022—Gates; Doors characterised by the manner of movement
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses an automatic safety door for a laboratory, which comprises a base and a door rod assembly, wherein the door rod assembly comprises an upper cross rod, a lower cross rod and a connecting rod, the upper cross rod and the lower cross rod are connected with a shaft of the base, and the connecting rod is connected with the upper cross rod and the lower cross rod through the shaft; the anti-falling component is arranged at the joint of the upper cross rod and the base; the side surface of the base is provided with a containing groove, the bottom of the containing groove is provided with a driving chamber, and the containing groove is communicated with the outside through the through hole; when the door rod driving piece is out of control and the door rod assembly falls down under the action of gravity, the falling speed of the door rod assembly is reduced due to the cooperation effect of the first circular saw teeth and the second circular saw teeth, the hidden danger of hitting people is eliminated, and the door is not prevented from being closed for protection.
Description
Technical Field
The invention relates to the technical field of safety doors, in particular to an automatic safety door for a laboratory.
Background
Before a high-voltage electrical apparatus is put into operation, it is necessary to perform various tests such as withstand voltage and accuracy, which require a voltage to be raised to a rated voltage or higher.
When carrying out the voltage boost test in the laboratory, if the place of stepping up has the personnel to come in and go out, unsatisfied and by test equipment safety distance, will take place to electrocute, cause the casualty accident incident of the person. In the boost test of my office, rely on the staff management and control to prevent to step up the personnel in place and come in and go out, there is not reliable technological measure to come. The project aims to solve the safety problem when the test equipment is boosted, and the automation equipment is used for isolating personnel beyond the safety distance of the tested equipment so as to technically block the possibility of electric shock in a laboratory. And the condition that a motor out-of-control door rod suddenly drops to hit people exists in the conventional safety door.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is to avoid the problem that the door rod falls down and hits the artificial adult to be injured.
In order to solve the technical problems, the invention provides the following technical scheme: an automatic safety door for a laboratory comprises a safety door body,
the door rod assembly comprises an upper cross rod, a lower cross rod and a connecting rod, the upper cross rod and the lower cross rod are connected with the base shaft, and the connecting rod shaft is connected with the upper cross rod and the lower cross rod;
the anti-falling assembly is arranged at the joint of the upper cross rod and the base.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: the side surface of the base is provided with a containing groove, the bottom of the containing groove is provided with a driving chamber, and the containing groove is communicated with the outside through the through hole;
a circular shaft is arranged on one side of the upper cross rod, a sector block is arranged on the circular shaft, and a driving piece is arranged at the end part of the circular shaft;
the circular shaft is arranged in the through hole, the fan-shaped block is arranged in the accommodating groove, and the driving piece is fixedly arranged in the driving chamber.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: the anti-falling assembly comprises a conversion disc and ratchet teeth arranged on the inner side wall of the accommodating groove, the conversion disc is sleeved on the circular shaft, and the conversion disc is arranged in the accommodating groove.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: a groove is formed in the conversion disc, an arc limiting plate is arranged on one side face of the accommodating groove, and the arc limiting plate is embedded in the groove;
the arc limiting plate is provided with a fan-shaped notch, and the fan-shaped block is located in the fan-shaped notch.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: be provided with first circular saw tooth on the inboard circumference wall of recess, be provided with the second circular saw tooth on the outer periphery of sector block, first circular saw tooth and second circular saw tooth cooperation are connected.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: a first caulking groove is formed in the outer circumferential surface of the conversion disc, a pawl connected with a side wall shaft of the first caulking groove is arranged in the first caulking groove, and a first spring connected with the pawl is further arranged in the first caulking groove;
the pawl is connected with the ratchet wheel teeth in a matching mode.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: the groove bottom surface is provided with a second caulking groove, a clamping block connected with the side wall shaft of the second caulking groove is arranged in the second caulking groove, and a second spring connected with the clamping block is arranged in the second caulking groove.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: the teeth of the first circular saw tooth and the second circular saw tooth are semi-cylinders.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: the second caulking grooves are arranged at the bottom of the groove along the circumferential array of the circular shaft.
As a preferable mode of the laboratory automatic safety gate of the present invention, wherein: and the first circular saw tooth and the second circular saw tooth are in interference fit.
The invention has the beneficial effects that: when the door rod driving piece is out of control and the door rod assembly falls down under the action of gravity, the falling speed of the door rod assembly is reduced due to the cooperation effect of the first circular saw teeth and the second circular saw teeth, the hidden danger of hitting people is eliminated, and the door is not prevented from being closed for protection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic structural view of a door rod assembly of an automatic laboratory safety door according to an embodiment of the present invention when the door rod assembly is closed down;
fig. 2 is a schematic structural view illustrating a door rod assembly in an automatic laboratory safety door according to an embodiment of the present invention when lifted and opened;
fig. 3 is a schematic sectional view of a placement structure of a transfer tray in an automatic laboratory safety door according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structural view of a connection portion between an upper cross bar and a base in an automatic safety door for a laboratory according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an upper cross bar in an automatic safety door for a laboratory according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 5, the present embodiment provides an automatic safety door for a laboratory, including,
the door rod assembly 200 comprises an upper cross rod 201, a lower cross rod 202 and a connecting rod 203, wherein the upper cross rod 201 and the lower cross rod 202 are connected with the base 100 through a shaft, and the connecting rod 203 is connected with the upper cross rod 201 and the lower cross rod 202 through the shaft;
the falling prevention assembly 300 is arranged at the joint of the upper cross rod 201 and the base 100, and the falling prevention assembly 300 is arranged at the joint of the upper cross rod 201 and the base 100.
In this embodiment, the base 100 and the door rod assembly 200 are arranged in pairs, the door rod assembly 200 can be lifted, the upper cross bar 201, the lower cross bar 202 and the connecting rod 203 are connected in a diamond shape, the vertical distance between the upper cross bar 201 and the lower cross bar 202 can be changed, and the position of the connecting rod 203 is changed accordingly, so that the door rod assembly 200 can be lifted. The connection structure of the connecting rod 203 with the upper cross bar 201 and the lower cross bar 202 is the prior art and will not be described in detail.
The side surface of the base 100 is provided with a containing groove 101, the bottom of the containing groove 101 is provided with a driving chamber 102, and the containing groove 101 is communicated with the outside through a through hole 103;
a round shaft 201a is arranged on one side of the upper cross bar 201, a fan-shaped block 201b is arranged on the round shaft 201a, and a driving piece 201c is arranged at the end part of the round shaft 201 a;
the circular shaft 201a is disposed in the through hole 103, the segment 201b is disposed in the receiving groove 101, and the driving member 201c is fixedly disposed in the driving chamber 102.
The driving member 201c is a stepping motor, and is configured to control the circular shaft 201a and the upper cross bar 201 to rotate within a certain angle, that is, to realize opening and closing of the door rod assembly 200 by lifting or lowering.
The falling prevention assembly 300 includes a conversion plate 301 and ratchet teeth 302 disposed on the inner sidewall of the containing cavity 101, the conversion plate 301 is sleeved on the circular shaft 201a, and the conversion plate 301 is disposed in the containing cavity 101.
A groove 301a is formed in the conversion disc 301, an arc-shaped limiting plate 101a is arranged on one side face of the accommodating groove 101, and the arc-shaped limiting plate 101a is embedded in the groove 301 a;
the arc-shaped limiting plate 101a is provided with a fan-shaped notch 101b, and the fan-shaped block 201b is positioned in the fan-shaped notch 101 b.
The circumferential wall on the inner side of the groove 301a is provided with a first circular saw tooth 301b, the outer circumferential surface of the sector 201b is provided with a second circular saw tooth 201d, and the first circular saw tooth 301b and the second circular saw tooth 201d are connected in a matching mode.
A first caulking groove 301c is formed in the outer circumferential surface of the conversion disc 301, a pawl 301d connected with a side wall shaft of the first caulking groove 301c is arranged in the first caulking groove 301c, and a first spring 301e connected with the pawl 301d is further arranged in the first caulking groove 301 c;
the pawl 301d is matingly connected to the ratchet teeth 302.
The pawl 301d is rotatable and the first spring 301e tends to push the pawl 301d out of the first nest 301c, bringing the pawl 301d into contact with the ratchet teeth 301 d.
The first spring 301e keeps the pawl 301d in a position of contacting and engaging with the ratchet tooth 301d, and when the conversion disc 301 rotates clockwise as shown in fig. 3, the pawl 301d contacts with the ratchet tooth 301d and is pressed to rotate, the first spring 301e compresses, the pawl 301d is pressed into the first caulking groove 301c, and at this time, the conversion disc 301 can smoothly rotate relative to the ratchet tooth 301 d; when the switching disk 301 is rotated counterclockwise as shown in fig. 3, the pawls 301d engage with the ratchet teeth 301d, and the switching disk 301 is restricted from rotating with respect to the ratchet teeth 301 d.
A second caulking groove 301f is formed in the bottom surface of the groove 301a, a clamping block 301g connected with a side wall shaft of the second caulking groove 301f is arranged in the second caulking groove 301f, and a second spring 301h connected with the clamping block 301g is arranged in the second caulking groove 301 f.
The latch 301g in the groove 301a is not pressed, and the end of the latch 301g is in the groove 301a in a natural state.
The latch 301g is rotatable with its end portion extending beyond the second indent 301f and also rotatable to be fully engaged in the second indent 301f, and the second spring 301h tends to cause the end portion of the latch 301g to extend beyond the second indent 301f, i.e., to cause the end portion of the latch 301g to be positioned in the recess 301 a.
It should be noted that the latch 301g is disposed near one end of the second insertion groove 301f, so that the latch 301g can be inserted into the second insertion groove 301f only from one direction. As shown in fig. 3, when the segment 201B rotates counterclockwise in the sector notch 101B from the position B to the position a, the segment 201B pushes the latch 301g to deform the second spring 301h, the latch 301g is pressed into the second slot 301f, and the segment 201B rotates in the groove 301a relative to the switching plate 301.
When the latch 301g rotates clockwise in the sector 201B from the position a to the position B in the sector notch 101B, the sector 201B cannot press the latch 301g into the second slot 301f, and the sector 201B is blocked by the latch 301g to push the latch 301g to rotate the switching disc 301 together.
It should be noted that when the segment 201B is at a, this corresponds to the door lever assembly 200 of fig. 1 being closed when lowered, and when the segment 201B is at B, this corresponds to the door lever assembly 200 of fig. 2 being raised open.
The teeth of the first circular saw tooth 301b and the second circular saw tooth 201d are semi-cylindrical, and it should be noted that the first circular saw tooth 301b and the second circular saw tooth 201d are in interference fit.
The second caulking grooves 301f are circumferentially arrayed along the circular shaft 201a at the bottom of the groove 301 a.
The invention can lead the upper cross rod 201 to slowly fall when falling under the condition of not being controlled by a motor, thereby avoiding the injury caused by smashing personnel.
Specifically, during the lifting process of the upper cross bar 201, that is, the motor drives the circular shaft 201a to rotate, so that when the sector 201B moves from a to B, the sector 201B pushes the latch 301g to rotate the switching disc 301 together, and at this time, the pawl 301d outside the switching disc 301 is pressed into the first caulking groove 301c, and at this time, the switching disc 301 can smoothly rotate relative to the ratchet teeth 301d to realize the lifting, which is not hindered.
When a fault occurs, the upper cross bar 201 falls, that is, the sector 201B rotates from the position B to the position a counterclockwise in the sector notch 101B, the conversion plate 301 cannot rotate relative to the ratchet teeth 301d under the clamping action of the pawl 301d and the ratchet teeth 301d, and the sector 201B pushes the fixture block 301g to deform the second spring 301h, so that the fixture block 301g is pressed into the second caulking groove 301f, and the sector 201B rotates relative to the conversion plate 301 in the groove 301a, so that the upper cross bar 201 descends; relative movement occurs between the first circular saw tooth 301b and the second circular saw tooth 201d in the process, and due to the cooperation between the first circular saw tooth 301b and the second circular saw tooth 201d, the second circular saw tooth 201d can receive the resistance in different places relative to the rotation of the first circular saw tooth 301b, so that the upper cross bar 201 slowly descends under the action of self gravity, the risk of injury to a person cannot be caused, and the door is kept closed to be in a protection state.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an automatic emergency exit in laboratory which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the door rod assembly (200) comprises an upper cross rod (201), a lower cross rod (202) and a connecting rod (203), the upper cross rod (201) and the lower cross rod (202) are connected with the base (100) through shafts, and the connecting rod (203) is connected with the upper cross rod (201) and the lower cross rod (202) through the shafts;
the anti-falling component (300) is arranged at the joint of the upper cross rod (201) and the base (100).
2. The laboratory automatic safety door according to claim 1, wherein: a containing groove (101) is formed in the side face of the base (100), a driving chamber (102) is arranged at the bottom of the containing groove (101), and the containing groove (101) is communicated with the outside through the through hole (103);
a round shaft (201a) is arranged on one side of the upper cross rod (201), a fan-shaped block (201b) is arranged on the round shaft (201a), and a driving piece (201c) is arranged at the end part of the round shaft (201 a);
the circular shaft (201a) is arranged in the through hole (103), the fan-shaped block (201b) is arranged in the accommodating groove (101), and the driving piece (201c) is fixedly arranged in the driving chamber (102).
3. The laboratory automatic safety door according to claim 1 or 2, wherein: the falling prevention assembly (300) comprises a conversion disc (301) and ratchet teeth (302) arranged on the inner side wall of the accommodating groove (101), the conversion disc (301) is sleeved on the circular shaft (201a), and the conversion disc (301) is arranged in the accommodating groove (101).
4. The laboratory automatic safety door according to claim 3, wherein: a groove (301a) is formed in the conversion disc (301), an arc-shaped limiting plate (101a) is arranged on one side face of the accommodating groove (101), and the arc-shaped limiting plate (101a) is embedded in the groove (301 a);
the arc-shaped limiting plate (101a) is provided with a fan-shaped notch (101b), and the fan-shaped block (201b) is located in the fan-shaped notch (101 b).
5. The laboratory automatic safety door according to claim 4, wherein: be provided with first circular saw tooth (301b) on the inboard circumference wall of recess (301a), be provided with second circular saw tooth (201d) on sectorial block (201b) the outer periphery, first circular saw tooth (301b) and second circular saw tooth (201d) cooperation are connected.
6. The laboratory automatic safety door according to claim 5, wherein: a first caulking groove (301c) is formed in the outer circumferential surface of the conversion disc (301), a pawl (301d) connected with a side wall shaft of the first caulking groove (301c) is arranged in the first caulking groove (301c), and a first spring (301e) connected with the pawl (301d) is further arranged in the first caulking groove (301 c);
the pawl (301d) is connected with the ratchet wheel teeth (302) in a matching mode.
7. The laboratory automatic safety door according to any one of claims 4 to 6, characterized in that: the groove is characterized in that a second caulking groove (301f) is formed in the bottom face of the groove (301a), a clamping block (301g) connected with the side wall shaft of the second caulking groove (301f) is arranged in the second caulking groove (301f), and a second spring (301h) connected with the clamping block (301g) is arranged in the second caulking groove (301 f).
8. The laboratory automatic safety door according to claim 7, wherein: the teeth of the first circular saw tooth (301b) and the second circular saw tooth (201d) are semi-cylindrical.
9. The laboratory automatic safety door according to claim 8, wherein: the second caulking grooves (301f) are arranged at the bottom of the groove ((301 a)) along the circumferential array of the circular shaft (201 a).
10. The laboratory automatic safety door according to claim 8 or 9, wherein: the first circular saw tooth (301b) and the second circular saw tooth (201d) are in interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350402.6A CN112593836B (en) | 2020-11-26 | 2020-11-26 | Laboratory automatic safety door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350402.6A CN112593836B (en) | 2020-11-26 | 2020-11-26 | Laboratory automatic safety door |
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| Publication Number | Publication Date |
|---|---|
| CN112593836A true CN112593836A (en) | 2021-04-02 |
| CN112593836B CN112593836B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011350402.6A Active CN112593836B (en) | 2020-11-26 | 2020-11-26 | Laboratory automatic safety door |
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| CN (1) | CN112593836B (en) |
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| US5459963A (en) * | 1993-12-16 | 1995-10-24 | The Serco Corporation | Safety gate for loading docks |
| US20060231217A1 (en) * | 2005-04-19 | 2006-10-19 | Martin David O | Controlled descent device |
| CN201649959U (en) * | 2009-11-09 | 2010-11-24 | 陈宇楠 | Auto-releaser of fire door |
| JP2014109177A (en) * | 2012-12-04 | 2014-06-12 | Takano Co Ltd | Flip-up gate door |
| CN204124999U (en) * | 2014-08-20 | 2015-01-28 | 四川路加四通科技发展有限公司 | A kind of can the lifting gate of automatic shutter |
| CN204877231U (en) * | 2015-07-17 | 2015-12-16 | 好孩子儿童用品有限公司 | But self -closing's emergency exit |
| CN207904820U (en) * | 2018-02-23 | 2018-09-25 | 成都宜泊信息科技有限公司 | Anti- for parking fee collective system pounds railing |
| CN110241757A (en) * | 2019-06-18 | 2019-09-17 | 简宁 | A kind of driving guardrail that can be automatically prevented from whereabouts out of control |
| CN209873636U (en) * | 2019-01-17 | 2019-12-31 | 天津中科智芯科技有限公司 | Community access lifter |
| CN211008755U (en) * | 2019-06-24 | 2020-07-14 | 阿勒泰正元国际矿业有限公司 | Interlocking device for vertical shaft safety door and car arrester |
| CN211115720U (en) * | 2019-10-25 | 2020-07-28 | 烟台大力神金属构件有限公司 | High-strength safety door upright convenient to dismount at any time |
| CN111705694A (en) * | 2020-08-12 | 2020-09-25 | 绍兴欢歌智能科技有限公司 | Parking lot charging device with functions of preventing vehicle from sliding and protecting passerby |
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2020
- 2020-11-26 CN CN202011350402.6A patent/CN112593836B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459963A (en) * | 1993-12-16 | 1995-10-24 | The Serco Corporation | Safety gate for loading docks |
| US20060231217A1 (en) * | 2005-04-19 | 2006-10-19 | Martin David O | Controlled descent device |
| CN201649959U (en) * | 2009-11-09 | 2010-11-24 | 陈宇楠 | Auto-releaser of fire door |
| JP2014109177A (en) * | 2012-12-04 | 2014-06-12 | Takano Co Ltd | Flip-up gate door |
| CN204124999U (en) * | 2014-08-20 | 2015-01-28 | 四川路加四通科技发展有限公司 | A kind of can the lifting gate of automatic shutter |
| CN204877231U (en) * | 2015-07-17 | 2015-12-16 | 好孩子儿童用品有限公司 | But self -closing's emergency exit |
| CN207904820U (en) * | 2018-02-23 | 2018-09-25 | 成都宜泊信息科技有限公司 | Anti- for parking fee collective system pounds railing |
| CN209873636U (en) * | 2019-01-17 | 2019-12-31 | 天津中科智芯科技有限公司 | Community access lifter |
| CN110241757A (en) * | 2019-06-18 | 2019-09-17 | 简宁 | A kind of driving guardrail that can be automatically prevented from whereabouts out of control |
| CN211008755U (en) * | 2019-06-24 | 2020-07-14 | 阿勒泰正元国际矿业有限公司 | Interlocking device for vertical shaft safety door and car arrester |
| CN211115720U (en) * | 2019-10-25 | 2020-07-28 | 烟台大力神金属构件有限公司 | High-strength safety door upright convenient to dismount at any time |
| CN111705694A (en) * | 2020-08-12 | 2020-09-25 | 绍兴欢歌智能科技有限公司 | Parking lot charging device with functions of preventing vehicle from sliding and protecting passerby |
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| Publication number | Publication date |
|---|---|
| CN112593836B (en) | 2022-11-25 |
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