CN112663540A

CN112663540A - Current-limiting gate

Info

Publication number: CN112663540A
Application number: CN202110132184.7A
Authority: CN
Inventors: 李想
Original assignee: Individual
Current assignee: Shenzhen Pinming Technology Co Ltd
Priority date: 2021-01-31
Filing date: 2021-01-31
Publication date: 2021-04-16
Anticipated expiration: 2041-01-31
Also published as: CN112663540B

Abstract

The invention relates to a current-limiting gate, 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, a piston is arranged in the third cavity, the first cavity absorbs liquid from the second cavity by rotation of the rotating shaft, then the liquid in the first cavity is pushed into the third cavity to push the piston to move upwards, a first through hole is formed in the lower end of the third cavity, a fixed annular sleeve is coaxially arranged outside the rotating shaft of the gate machine, 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 cavity is arranged on the third cavity, liquid inlet of the third cavity is too fast due to too fast rotation of the rotating shaft, and the clamping block is pushed outwards to; the invention can limit the passing frequency of the gate and avoid the situation that people gather in the gate.

Description

Current-limiting gate

Technical Field

The invention relates to the field of passing equipment, in particular to a current-limiting gate.

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

In order to overcome the defects of the prior art, the invention provides the current-limiting gate, which effectively solves the problem that the gate cannot limit the passing frequency.

The technical scheme includes that the current-limiting 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 is installed in the third cavity, a second pressure spring is installed at the upper end of the second piston, a liquid pipe is connected between the first cavity and the third cavity, a first through hole is formed in the lower end of the third cavity, and a second through hole capable of feeding liquid into the first cavity is formed in the lower end of the second cavity; a fixed annular sleeve is coaxially arranged outside a rotating shaft of the gate machine, 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 upper end of the second piston is a conical surface; the first piston moves upwards to press the liquid in the first chamber into the third chamber and push the second piston to move upwards, one upward moving stroke of the first piston just enables the second piston to move upwards from the lowest position to the conical surface to be contacted with the fixture block, if the second piston is contacted with the fixture block, the second piston continues to move upwards to push the fixture block outwards, and the outer end of the fixture block is inserted into the 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.

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 piston is installed in the blind hole, a third pressure spring is installed between the plunger piston and the bottom of the blind hole, and the plunger piston 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.

The second through hole is provided with a one-way valve which can feed liquid into the first cavity.

The upper portion of third chamber open and to have first pressure release hole, the upper end of second chamber open and to have the second pressure release hole, blind hole bottom open and to have the third pressure release hole with the third chamber intercommunication.

And a fourth pressure spring capable of enabling the fixture block to reset inwards is arranged on the fixture block, and when the fourth pressure spring is in original length, the outer end of the fixture block does not extend into the teeth of the annular sleeve.

The end face cam is internally and uniformly distributed with a plurality of same pushing strokes and return strokes, 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 times of the push rod in the circle are the same as the number of people passing through the gate by 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 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 is installed in the third chamber 5, a second pressure spring 10 is installed at the upper end of the second piston 9, a liquid pipe 11 is connected between the first chamber 3 and the third chamber 5, a first through hole 12 is formed at the lower end of the third chamber 5, and a second through hole 13 capable of feeding liquid into the first chamber 3 is formed at the lower end of the second chamber 4; a fixed annular sleeve 14 is coaxially arranged outside the rotating shaft 1, teeth 15 are uniformly distributed on the circumference of the inner wall of the annular sleeve 14, a clamping block 16 radially penetrating through the side wall of the third chamber 5 is arranged on the third chamber, and the upper end of the second piston 9 is a conical surface; 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 to move upwards, one upward movement stroke of the first piston 6 just enables the second piston 9 to move upwards from the lowest position to the conical surface to be contacted with the fixture block 16, if the second piston 9 is contacted with the fixture block 16, the second piston continues to move upwards to push the fixture block 16 outwards, and the outer end of the fixture block 16 is inserted into the teeth 15 of the annular sleeve 14; an end face cam 17 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 17, and the end face cam 17 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 18 intersected with the first through hole 12 is formed between the second chamber 4 and the third chamber 5, the upper end of the liquid pipe 11 is connected with the blind hole 18, a vertical hole 19 communicated with the blind hole 18 is formed in the bottom of the third chamber 5, a plunger 20 is installed in the blind hole 18, a third pressure spring 21 is installed between the plunger 20 and the bottom of the blind hole 18, and the plunger 20 moves left and right to enable the vertical hole 19 and the first through hole 12 to be opened at the same time; the plunger 20 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 13 is provided with a one-way valve 22 which can feed liquid into the first chamber 3.

A first pressure relief hole 23 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 24 to maintain the air pressure balance in the second chamber 4, so that the second chamber 4 can smoothly feed and discharge liquid; the bottom of the blind hole 18 is provided with a third pressure relief hole 25 communicated with the third chamber 5, so that the plunger 20 can smoothly move towards the bottom of the blind hole 18.

A fourth compression spring 26 capable of enabling the fixture block 16 to reset inwards is mounted on the fixture block 16, and when the fourth compression spring 26 is in an original length, the outer end of the fixture block 16 does not extend into the teeth 15 of the annular sleeve 14.

A plurality of same pushing strokes and return strokes are uniformly distributed in one circle of the end face cam 17, so that the rotating shaft 1 rotates for one circle, the end face cam 17 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 passable frequency of the gate rotating for one circle; for example, if the gate rotates one circle for passing three times, the end cam 17 has three push strokes, and the rotating shaft 1 rotates one circle for reciprocating the push rod 8 up and down three times.

When the gate is used, when one person passes through the gate, the gate rotates by a fixed angle, and the end cam 17 pushes the push rod 8 to complete one up-and-down reciprocating motion; at the beginning, the push rod 8 is at the lowest position, the second piston 9 is in contact with the lower end of the third chamber 5 under the action of the second pressure spring 10, the third pressure spring 21 is at the original length, the plunger 20 seals the vertical hole 19, and the first through hole 12 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 11, the plunger 20 in the blind hole 18 moves towards the bottom of the blind hole 18 against the action of the third compression spring 21 under the action of water pressure in the liquid pipe 11, the plunger 20 firstly passes through the first through hole 12 to close the first through hole 12, the plunger 20 continuously moves towards the bottom of the blind hole 18, the vertical hole 19 is opened, so that the liquid in the first chamber 3 enters the third chamber 5 through the liquid pipe 11, the blind hole 18 and the vertical hole 19 and pushes the second piston 9 to move upwards against the action of the second compression spring 10, when the push rod 8 pushes the first piston 6 to the highest position, the conical surface of the second piston 9 just contacts with the inner end of the fixture block 16, then the push rod 8 moves downwards from the highest position, the pressure is not applied to the liquid pipe 11 any more, the plunger 20 moves outwards under the action of the third compression spring 21 to close the vertical hole 19 and then opens, under the action of the second pressure spring 10, liquid in the third chamber 5 is pushed into the second chamber 4 through the first through hole 12, due to the flow limiting effect of the first through hole 12, a certain time is needed for the liquid in the third chamber 5 to be discharged completely, and the time can be adjusted by changing the aperture of the first through hole 12 or the elastic modulus of the second pressure spring 10; 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 13 and the one-way valve 22, 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 in the third chamber 5 is not completely discharged.

Before the liquid in the third chamber 5 is completely discharged, 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, the pressure in the liquid pipe 11 pushes the plunger 20 to move towards the bottom of the blind hole 18 to close the first through hole 12, the vertical hole 19 is opened, the liquid discharge in the third chamber 5 stops and starts to feed liquid, the second piston 9 is pushed to move upwards, the second piston 9 is not at the lowest position because the liquid remains in the third chamber 5 at this time, before the first piston 6 moves upwards to the highest position, the second piston 9 must cross the previous highest position, so that the conical surface of the second piston 9 pushes the fixture block 16 to move outwards against the action of the fourth compression spring 26, the outer end of the fixture block 16 is clamped into the teeth 15 of the annular sleeve 14, so that the housing 2 and the rotating shaft 1 of the gate are locked, the gate cannot rotate continuously, and the person cannot pass through the gate, therefore, the gate can continue to pass after the liquid in the third chamber 5 is completely discharged, so that the passing frequency is limited, and the purpose of limiting the flow 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

1. A current-limiting gate comprises a rotating shaft (1) of the gate, and is characterized in that a columnar shell (2) parallel to the rotating shaft (1) is fixed on the outer wall of the rotating shaft (1), the shell (2) is internally divided into a first cavity (3) from bottom to top, the liquid feeding device comprises a second chamber (4) and a third chamber (5), 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 (6), a second piston (9) is installed in the third chamber (5), a second pressure spring (10) is installed at the upper end of the second piston (9), a liquid pipe (11) is connected between the first chamber (3) and the third chamber (5), a first through hole (12) is formed at the lower end of the third chamber (5), and a second through hole (13) capable of feeding liquid into the first chamber (3) is formed at the lower end of the second chamber (4); a fixed annular sleeve (14) is coaxially arranged outside the rotating shaft (1), teeth (15) are uniformly distributed on the circumference of the inner wall of the annular sleeve (14), a clamping block (16) radially penetrating through the side wall of the third chamber (5) is arranged on the third chamber, and the upper end of the second piston (9) is a conical surface; 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) to move upwards, one upward moving stroke of the first piston (6) just enables the second piston (9) to move upwards from the lowest position to the conical surface to be contacted with the clamping block (16), if the second piston (9) is contacted with the clamping block (16), the second piston continues to move upwards to push the clamping block (16) outwards, and the outer end of the clamping block (16) is inserted into the teeth (15) of the annular sleeve (14); an end face cam (17) 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 (17), and the end face cam (17) pushes the push rod (8) to reciprocate up and down when the shell (2) rotates along with the rotating shaft (1).

2. The current-limiting gate machine according to claim 1, characterized in that a transverse blind hole (18) intersecting the first through hole (12) is formed between the second chamber (4) and the third chamber (5), the upper end of the liquid pipe (11) is connected with the blind hole (18), a vertical hole (19) communicated with the blind hole (18) is formed at the bottom of the third chamber (5), a plunger (20) is installed in the blind hole (18), a third pressure spring (21) is installed between the plunger (20) and the bottom of the blind hole (18), and the plunger (20) moves left and right to enable the vertical hole (19) and the first through hole (12) to be opened at the same time and only one is opened.

3. A current-limiting gate machine according to claim 1, characterized in that the second through hole (13) is provided with a non-return valve (22) for feeding liquid into the first chamber (3).

4. A current-limiting gate machine according to claim 1, characterized in that the upper part of said third chamber (5) is provided with a first pressure relief hole (23); a second pressure relief hole (24) is formed in the upper end of the second cavity (4); and a third pressure relief hole (25) communicated with the third chamber (5) is formed in the bottom of the blind hole (18).

5. The current-limiting gate machine according to claim 1, wherein a fourth compression spring (26) capable of enabling the block (16) to reset inwards is mounted on the block (16), and when the fourth compression spring (26) is in an original length, the outer end of the block (16) does not extend into the teeth (15) of the annular sleeve (14).

6. The gate machine according to claim 1, characterized in that the end cam (17) 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 (17) 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 that the gate machine can pass through by rotating one circle.