CN112726460A - Gate for preventing people in area from being dense - Google Patents

Gate for preventing people in area from being dense Download PDF

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Publication number
CN112726460A
CN112726460A CN202110132185.1A CN202110132185A CN112726460A CN 112726460 A CN112726460 A CN 112726460A CN 202110132185 A CN202110132185 A CN 202110132185A CN 112726460 A CN112726460 A CN 112726460A
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CN
China
Prior art keywords
piston
chamber
cavity
hole
gate
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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.)
Pending
Application number
CN202110132185.1A
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Chinese (zh)
Inventor
李想
Original Assignee
李想
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Filing date
Publication date
Application filed by 李想 filed Critical 李想
Priority to CN202110132185.1A priority Critical patent/CN112726460A/en
Publication of CN112726460A publication Critical patent/CN112726460A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F13/00Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage

Abstract

The invention relates to a gate capable of preventing people from being concentrated in an area, which effectively solves the problem that the gate cannot limit the passing frequency; the technical scheme includes that a rotating shaft of the gate machine is included, a shell parallel to the rotating shaft is fixed on the outer wall of the rotating shaft, the shell is divided into a first cavity, a second cavity and a third cavity from bottom to top, liquid is filled in the first cavity and the second cavity, the first cavity can absorb liquid from the second cavity by rotating the rotating shaft and then push the liquid in the first cavity into the third cavity, a first through hole is formed in the lower end of the third cavity, an annular sleeve is arranged outside the rotating shaft, teeth are uniformly distributed on the circumference of the inner wall of the annular sleeve, a clamping block penetrating through the side wall of the annular sleeve in the radial direction is arranged on the third cavity, two pistons are arranged in the third cavity, and hydraulic pressure between the two pistons is increased by the aid of the too fast liquid inlet of the third cavity to push the clamping block to move; the invention can limit the passing frequency of the gate and avoid the situation that people gather in the gate.

Description

Gate for preventing people in area from being dense
Technical Field
The invention relates to the field of passing equipment, in particular to a gate capable of preventing people in an area from being dense.
Background
The gate is a device for limiting passage, is widely applied to entrances and exits of airports, stations, communities and the like, and has the functions of limiting the number of people passing each time, avoiding simultaneous passage of multiple people, avoiding congestion and facilitating smooth and orderly operation of related work such as ticket checking, security inspection and the like; the current gate only limits the number of people passing each time, single-person passing is realized, but the passing frequency cannot be limited, so that ticket checking, security inspection or other work for the previous person is not completed, the later person enters the place through the gate, the jam in the place and the disorder of related work places are caused, and the missing of people such as missing inspection and the like easily occurs; in addition, the passing frequency is not limited, people in the site can easily enter or exit, the density of people in the site is high, and the risk of spreading infectious diseases is increased.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the gate machine for preventing the people in the area from being dense, and the problem that the gate machine cannot limit the passing frequency is effectively solved.
The gate comprises a rotating shaft of the gate, a columnar shell parallel to the rotating shaft is fixed on the outer wall of the rotating shaft, the shell is divided into a first cavity, a second cavity and a third cavity from bottom to top, liquid is filled in the first cavity and the second cavity, a first piston is installed in the first cavity, a first pressure spring is installed at the upper end of the first piston, a push rod extending out of the shell is fixed at the lower end of the first piston, a second piston and a third piston are installed in the third cavity, the third piston is located above the third piston, liquid is filled between the second piston and the third piston, a second pressure spring is installed at the upper end of the third piston, a vertical limiting rod is installed at the upper end of the third cavity, and the highest position of the third piston is limited; a liquid pipe is connected between the first chamber and the third chamber, a first through hole is formed in the lower end of the third chamber, and a second through hole capable of feeding liquid into the first chamber is formed in the lower end of the second chamber; a fixed annular sleeve is coaxially arranged outside the rotating shaft, teeth are uniformly distributed on the circumference of the inner wall of the annular sleeve, a clamping block radially penetrating through the side wall of the third chamber is arranged on the third chamber, and the clamping block is positioned between the second piston and the third piston; the first piston moves upwards to press liquid in the first chamber into the third chamber and push the second piston and the third piston to move upwards, one-time upward moving stroke of the first piston just can push the third piston to move upwards to be contacted with the limiting rod, if the third piston is contacted with the limiting rod, the second piston continues to move upwards to increase hydraulic pressure between the second piston and the third piston, so that the clamping block is pushed to move outwards, and the outer end of the clamping block is inserted into teeth of the annular sleeve; an end face cam coaxial with the rotating shaft is arranged below the shell, the lower end of the push rod is in contact with the end face cam, and the end face cam pushes the push rod to reciprocate up and down when the shell rotates along with the rotating shaft.
Furthermore, a transverse blind hole intersected with the first through hole is formed between the second chamber and the third chamber, the upper end of the liquid pipe is connected with the blind hole, a vertical hole communicated with the blind hole is formed in the bottom of the third chamber, a plunger is installed in the blind hole, a third pressure spring is installed between the plunger and the bottom of the blind hole, and the plunger moves left and right to enable the vertical hole and the first through hole to be opened at the same time and only one of the vertical hole and the first through hole is opened.
Furthermore, the second through hole is provided with a one-way valve which can feed liquid into the first cavity.
Furthermore, the upper portion of third chamber open and to have a first pressure release hole, the upper end of second chamber open and to have a second pressure release hole, blind hole bottom open and to have the third pressure release hole with third chamber intercommunication.
Furthermore, a fourth pressure spring capable of enabling the fixture block to reset inwards is installed on the fixture block, and when the fourth pressure spring is in the original length, the outer end of the fixture block does not extend into the teeth of the annular sleeve.
Furthermore, a plurality of same pushing strokes and return strokes are uniformly distributed in one circle of the end face cam, so that the rotating shaft rotates for one circle, the end face cam pushes the push rod to do up-and-down reciprocating motion for a plurality of times, and the up-and-down reciprocating motion frequency of the push rod in one circle is the same as the passable frequency of the gate rotating for one circle.
The invention can limit the passing frequency of the gate, and can avoid the situation that people in the gate gather disorderly, thereby maintaining the order of the places in the gate, and enabling the work in the gate to be carried out orderly without disorder and omission.
Drawings
Fig. 1 is a front sectional view of the present invention.
Fig. 2 is a front cross-sectional view of the housing when the push rod reaches the uppermost position under normal conditions.
Fig. 3 is a front cross-sectional view of the housing at a passage frequency less than a limit frequency.
Fig. 4 is a top view of the present invention.
Fig. 5 is an enlarged view of the position a in fig. 4.
Fig. 6 is an enlarged view of the position B in fig. 2.
Fig. 7 is an enlarged view of the position C in fig. 3.
Fig. 8 is an enlarged view of the position D in fig. 1.
Fig. 9 is an enlarged view of the position E in fig. 2.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, the gate valve comprises a rotating shaft 1 of the gate valve, a cylindrical shell 2 parallel to the rotating shaft is fixed on the outer wall of the rotating shaft 1, the shell 2 is internally divided into a first chamber 3, a second chamber 4 and a third chamber 5 from bottom to top, liquid is filled in the first chamber 3 and the second chamber 4, a first piston 6 is installed in the first chamber 3, a first pressure spring 7 is installed at the upper end of the first piston 6, a push rod 8 extending out of the shell 2 is fixed at the lower end of the first piston, a second piston 9 and a third piston 10 are installed in the third chamber 5, the third piston 10 is located above the second piston 9, liquid is filled between the third piston 10, a second pressure spring 11 is installed at the upper end of the third piston 10, a vertical limiting rod 12 is installed at the upper end of the third chamber 5, and the highest position of the third piston 10 is limited; a liquid pipe 13 is connected between the first chamber 3 and the third chamber 5, a first through hole 14 is formed at the lower end of the third chamber 5, and a second through hole 15 capable of feeding liquid into the first chamber 3 is formed at the lower end of the second chamber 4; a fixed annular sleeve 16 is coaxially arranged outside the rotating shaft 1, teeth 17 are uniformly distributed on the circumference of the inner wall of the annular sleeve 16, a clamping block 18 radially penetrating through the side wall of the third chamber 5 is arranged on the third chamber, and the clamping block 18 is positioned between the second piston 9 and the third piston 10; the first piston 6 moves upwards to press the liquid in the first chamber 3 into the third chamber 5 and push the second piston 9 and the third piston 10 to move upwards, one upward movement stroke of the first piston 6 just pushes the third piston 10 to move upwards to be contacted with the limiting rod 12, if the third piston 10 is contacted with the limiting rod 12, the second piston 9 moves upwards continuously to increase the hydraulic pressure between the second piston 9 and the third piston 10, so that the fixture block 18 is pushed to move outwards, and the outer end of the fixture block 18 is inserted into the teeth 17 of the annular sleeve 16; an end face cam 19 coaxial with the rotating shaft 1 is arranged below the shell 2, the lower end of the push rod 8 is in contact with the end face cam 19, and the end face cam 19 pushes the push rod 8 to reciprocate up and down when the shell 2 rotates along with the rotating shaft 1.
A transverse blind hole 20 intersected with the first through hole 14 is formed between the second chamber 4 and the third chamber 5, the upper end of the liquid pipe 13 is connected with the blind hole 20, a vertical hole 21 communicated with the blind hole 20 is formed in the bottom of the third chamber 5, a plunger 22 is installed in the blind hole 20, a third pressure spring 23 is installed between the plunger 22 and the bottom of the blind hole 20, and the plunger 22 moves left and right to enable the vertical hole 21 and the first through hole 14 to be opened at the same time; the plunger 22 separates the liquid feed discharge from the third chamber 5 and makes it easier to control and set the discharge rate.
The second through hole 15 is provided with a one-way valve 24 which can feed liquid into the first chamber 3.
A first pressure relief hole 25 is formed in the upper part of the third chamber 5 to maintain the air pressure balance at the upper end of the second piston 9; the upper end of the second chamber 4 is provided with a second pressure relief hole 26, so that the air pressure balance in the second chamber 4 is maintained, and the second chamber 4 can smoothly feed and discharge liquid; the bottom of the blind hole 20 is provided with a third pressure relief hole 27 communicated with the third chamber 5, so that the plunger 22 can smoothly move towards the bottom of the blind hole 20.
The fixture block 18 is provided with a fourth compression spring 28 which can enable the fixture block 18 to reset inwards, and when the fourth compression spring 28 is in an original length, the outer end of the fixture block 18 does not extend into the teeth 17 of the annular sleeve 16.
A plurality of same pushing strokes and return strokes are uniformly distributed in one circle of the end face cam 19, so that the rotating shaft 1 rotates for one circle, the end face cam 19 pushes the push rod 8 to do up-and-down reciprocating motion for a plurality of times, and the up-and-down reciprocating motion frequency of the push rod 8 in one circle is the same as the passing frequency of the gate rotating for one circle; for example, if the gate rotates one revolution and passes three times, the end cam 19 has three return strokes, and the rotating shaft 1 rotates one revolution and the push rod 8 reciprocates three times up and down.
When the gate is used, when one person passes through the gate, the gate rotates by a fixed angle, and the end cam 19 pushes the push rod 8 to complete one up-and-down reciprocating motion; at the beginning, the first piston 6 and the push rod 8 are at the lowest positions, under the action of the second pressure spring 11, the second piston 9 and the third piston 10 are at the lowest positions, the second piston 9 is in contact with the lower end of the third chamber 5, the third pressure spring 23 is at the original length, the plunger 22 closes the vertical hole 21, and the first through hole 14 is opened; when the gate starts to rotate, the push rod 8 moves upwards to push the first piston 6 to move upwards against the action of the first compression spring 7, so that liquid in the first chamber 3 is pressed into the liquid pipe 13, the plunger 22 in the blind hole 20 moves towards the bottom of the blind hole 20 against the action of the third compression spring 23 under the action of water pressure in the liquid pipe 13, the plunger 22 firstly penetrates through the first through hole 14 to close the first through hole 14, the plunger 22 continuously moves towards the bottom of the blind hole 20, the vertical hole 21 is opened, so that the liquid in the first chamber 3 enters the third chamber 5 through the liquid pipe 13, the blind hole 20 and the vertical hole 21 and pushes the second piston 9 and the third piston 10 to move upwards against the action of the second compression spring 11, before the third piston 10 contacts the limiting rod 12, the liquid pressure between the second piston 9 and the third piston 10 is small, the clamping block 18 is not enough to be pushed outwards, and when the push rod 8 pushes the first piston 6 to the highest position, at the moment, the third piston 10 just contacts with the lower end of the limiting rod 12, then the push rod 8 moves downwards from the highest position, no pressure exists in the liquid pipe 13, the plunger 22 moves outwards under the action of the third pressure spring 23 to firstly close the vertical hole 21 and then open the first through hole 14, liquid below the second piston 9 is pushed into the second chamber 4 through the first through hole 14 under the action of the second pressure spring 11, a certain time is needed for the liquid below the second piston 9 to be completely discharged due to the flow limiting effect of the first through hole 14, and the time can be adjusted by changing the aperture of the first through hole 14 or the elastic modulus of the second pressure spring 11; when the push rod 8 moves downwards, the first piston 6 synchronously moves downwards under the action of the first pressure spring 7, the first chamber 3 sucks liquid from the second chamber 4 through the second through hole 15 and the one-way valve 24, after the person completely passes through the first chamber, the push rod 8 falls back to the lowest position, and at the moment, the liquid below the second piston 9 is not completely discharged.
Before the liquid below the second piston 9 is exhausted, if someone tries to pass through the gate, the gate rotates to push the push rod 8 and the first piston 6 to move upwards again, the pressure in the liquid pipe 13 pushes the plunger 22 to move towards the bottom of the blind hole 20 to close the first through hole 14, the vertical hole 21 is opened, the liquid discharge below the second piston 9 stops, the liquid starts to enter, the second piston 9 and the third piston 10 are pushed to move upwards, because the liquid is remained below the second piston 9 at this time, the second piston 9 and the third piston 10 are not at the lowest position, before the first piston 6 moves upwards to the highest position, the third piston 10 is necessarily contacted with the lower end of the limiting rod 12 and cannot move upwards continuously, the hydraulic pressure between the second piston 9 and the third piston 10 is suddenly increased due to the continuous upwards movement of the second piston 9, the fixture block 18 is pushed to move outwards against the action of the fourth compression spring 28, the outer end of the fixture block 18 is clamped in the tooth 17 of the annular sleeve 16, therefore, the shell 2 and the rotating shaft 1 of the gate are locked, the gate cannot rotate continuously and people cannot pass through the gate, and therefore the gate can pass continuously only after liquid below the second piston 9 is completely discharged, the passing frequency is limited, and the purpose of limiting the current is achieved.
The invention utilizes the liquid circulation in the three cavities to limit the rotation frequency of the gate, thereby realizing the passing current limiting, avoiding the confusion of personnel in the gate, maintaining the order of the places in the gate, ensuring the orderly operation in the gate without the confusion and omission, and reducing the risk of spreading infectious diseases.
The invention can be applied to various types of gate machines in the form of a revolving door, three-roller gate machines, lifting rod type gate machines, opening and closing leaf type gate machines and the like, and the invention only needs to fix the shell 2 and the rotating shaft 1 of the gate machine in parallel, thereby having strong universality.
The invention does not use an electronic monitoring element and an electric braking execution component, does not need to supply power and can be used for a long time in any place.

Claims (6)

1. A gate for preventing dense personnel in an area comprises a rotating shaft (1) of the gate and is characterized in that a columnar shell (2) parallel to the rotating shaft is fixed on the outer wall of the rotating shaft (1), the shell (2) is internally divided into a first cavity (3), a second cavity (4) and a third cavity (5) from bottom to top, liquid is filled in the first cavity (3) and the second cavity (4), a first piston (6) is installed in the first cavity (3), a first pressure spring (7) is installed at the upper end of the first piston (6), a push rod (8) extending out of the shell (2) is fixed at the lower end of the first piston, a second piston (9) and a third piston (10) are installed in the third cavity (5), the third piston (10) is arranged on the upper end of the second piston (9), liquid is filled between the second piston (9) and the third piston (10), a second pressure spring (11) is installed at the upper end of the third piston (10), a vertical limiting rod (12) is arranged at the upper end of the third chamber (5) to limit the highest position of the third piston (10); a liquid pipe (13) is connected between the first chamber (3) and the third chamber (5), a first through hole (14) is formed at the lower end of the third chamber (5), and a second through hole (15) which can feed liquid into the first chamber (3) is formed at the lower end of the second chamber (4); a fixed annular sleeve (16) is coaxially arranged outside the rotating shaft (1), teeth (17) are uniformly distributed on the circumference of the inner wall of the annular sleeve (16), a clamping block (18) radially penetrating through the side wall of the third chamber (5) is arranged on the third chamber, and the clamping block (18) is positioned between the second piston (9) and the third piston (10); the first piston (6) moves upwards to press liquid in the first chamber (3) into the third chamber (5) and push the second piston (9) and the third piston (10) to move upwards, one upward movement stroke of the first piston (6) just pushes the third piston (10) to move upwards to be contacted with the limiting rod (12), if the third piston (10) is contacted with the limiting rod (12), the second piston (9) moves upwards continuously to increase hydraulic pressure between the second piston (9) and the third piston (10), so that the clamping block (18) is pushed to move outwards, and the outer end of the clamping block (18) is inserted into teeth (17) of the annular sleeve (16); an end face cam (19) coaxial with the rotating shaft (1) is arranged below the shell (2), the lower end of the push rod (8) is in contact with the end face cam (19), and the end face cam (19) pushes the push rod (8) to reciprocate up and down when the shell (2) rotates along with the rotating shaft (1).
2. The gate machine for preventing the concentration of people in an area according to claim 1, characterized in that a transverse blind hole (20) intersecting with the first through hole (14) is formed between the second chamber (4) and the third chamber (5), the upper end of the liquid pipe (13) is connected with the blind hole (20), a vertical hole (21) communicated with the blind hole (20) is formed at the bottom of the third chamber (5), a plunger (22) is installed in the blind hole (20), a third pressure spring (23) is installed between the plunger (22) and the bottom of the blind hole (20), and the plunger (22) moves left and right to enable the vertical hole (21) and the first through hole (14) to be opened at the same time and only one is opened.
3. A gate machine for preventing personnel concentration in an area according to claim 1, characterized in that the second through hole (15) is provided with a one-way valve (24) for feeding liquid into the first chamber (3).
4. The gate machine for preventing people from gathering in the area according to claim 1, characterized in that the upper part of the third chamber (5) is provided with a first pressure relief hole (25); a second pressure relief hole (26) is formed in the upper end of the second cavity (4); and a third pressure relief hole (27) communicated with the third chamber (5) is formed in the bottom of the blind hole (20).
5. The gate machine for preventing people from gathering in the area as claimed in claim 1, wherein the latch (18) is provided with a fourth compression spring (28) for restoring the latch inwards, and when the fourth compression spring (28) is in the original position, the outer end of the latch (18) does not extend into the teeth (17) of the annular sleeve (16).
6. The gate machine for preventing people from gathering in the area according to claim 1, wherein the end cam (19) has a plurality of same pushing and returning strokes uniformly distributed in one circle, so that the rotating shaft (1) rotates one circle, the end cam (19) pushes the push rod (8) to reciprocate up and down for a plurality of times, and the number of times of reciprocating up and down of the push rod (8) in one circle is the same as the number of times of passing through of one circle of rotation of the gate machine.
CN202110132185.1A 2021-01-31 2021-01-31 Gate for preventing people in area from being dense Pending CN112726460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110132185.1A CN112726460A (en) 2021-01-31 2021-01-31 Gate for preventing people in area from being dense

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110132185.1A CN112726460A (en) 2021-01-31 2021-01-31 Gate for preventing people in area from being dense

Publications (1)

Publication Number Publication Date
CN112726460A true CN112726460A (en) 2021-04-30

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ID=75594942

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CN (1) CN112726460A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452963A (en) * 1994-07-20 1995-09-26 Christensen; Marc E. Crowd control barrier
AU3557795A (en) * 1994-09-16 1996-03-29 Montana Bay Holdings Pty Ltd Security bollard
CN203096644U (en) * 2013-01-15 2013-07-31 深圳市同步闸机有限公司 Wing gate machine and movement of same
US20150033628A1 (en) * 2013-07-30 2015-02-05 Aegys, LLC On Demand Modular Ingress/Egress Control Mechanism
KR101644977B1 (en) * 2015-12-08 2016-08-04 주식회사 디앤에스테크놀로지 Uunderground barricade using reaction force of spring
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CN209779568U (en) * 2019-02-22 2019-12-13 张奉清 Flood discharge seepage-proofing dam for hydraulic engineering
KR20200027380A (en) * 2018-09-04 2020-03-12 현대자동차주식회사 Caliper brake device for vehicle
CN210216234U (en) * 2019-07-03 2020-03-31 江苏明镜电子科技有限公司 Novel gate
CN210420955U (en) * 2019-06-10 2020-04-28 广州众威能信息科技有限公司 Pedestrian passageway gate machine
CN111127702A (en) * 2018-10-12 2020-05-08 上海晶统电子科技有限公司 Traffic card intelligent identification floodgate machine
CN210529563U (en) * 2019-06-12 2020-05-15 苏州智芯控联信息科技有限公司 Two-way current-limiting type floodgate machine convenient to remove
CN211113333U (en) * 2019-11-15 2020-07-28 深圳市致升科技有限公司 Intelligent gate equipment
CN211286824U (en) * 2019-11-27 2020-08-18 辽宁基石电子科技有限公司 Self-service silver-colored pavilion
CN211948100U (en) * 2020-01-09 2020-11-17 河南省高速公路实业开发有限公司 Mechanical retracting device for traffic road cone
CN212247976U (en) * 2020-04-02 2020-12-29 广东微路通电子商务有限公司 Balanced barrier gate
CN112647831A (en) * 2021-01-31 2021-04-13 李想 Current-limiting revolving door
CN112663540A (en) * 2021-01-31 2021-04-16 李想 Current-limiting gate

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452963A (en) * 1994-07-20 1995-09-26 Christensen; Marc E. Crowd control barrier
AU3557795A (en) * 1994-09-16 1996-03-29 Montana Bay Holdings Pty Ltd Security bollard
CN203096644U (en) * 2013-01-15 2013-07-31 深圳市同步闸机有限公司 Wing gate machine and movement of same
US20150033628A1 (en) * 2013-07-30 2015-02-05 Aegys, LLC On Demand Modular Ingress/Egress Control Mechanism
KR101644977B1 (en) * 2015-12-08 2016-08-04 주식회사 디앤에스테크놀로지 Uunderground barricade using reaction force of spring
CN207376514U (en) * 2017-09-18 2018-05-18 浙江久安科技有限公司 A kind of scenic spot passenger separate system
CN207685724U (en) * 2017-11-29 2018-08-03 南方银通(武汉)信息技术服务有限公司 One kind is anti-error to rush gate
KR20200027380A (en) * 2018-09-04 2020-03-12 현대자동차주식회사 Caliper brake device for vehicle
CN111127702A (en) * 2018-10-12 2020-05-08 上海晶统电子科技有限公司 Traffic card intelligent identification floodgate machine
CN209779568U (en) * 2019-02-22 2019-12-13 张奉清 Flood discharge seepage-proofing dam for hydraulic engineering
CN210420955U (en) * 2019-06-10 2020-04-28 广州众威能信息科技有限公司 Pedestrian passageway gate machine
CN210529563U (en) * 2019-06-12 2020-05-15 苏州智芯控联信息科技有限公司 Two-way current-limiting type floodgate machine convenient to remove
CN210216234U (en) * 2019-07-03 2020-03-31 江苏明镜电子科技有限公司 Novel gate
CN211113333U (en) * 2019-11-15 2020-07-28 深圳市致升科技有限公司 Intelligent gate equipment
CN211286824U (en) * 2019-11-27 2020-08-18 辽宁基石电子科技有限公司 Self-service silver-colored pavilion
CN211948100U (en) * 2020-01-09 2020-11-17 河南省高速公路实业开发有限公司 Mechanical retracting device for traffic road cone
CN212247976U (en) * 2020-04-02 2020-12-29 广东微路通电子商务有限公司 Balanced barrier gate
CN112647831A (en) * 2021-01-31 2021-04-13 李想 Current-limiting revolving door
CN112663540A (en) * 2021-01-31 2021-04-16 李想 Current-limiting gate

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