CN111231812A

CN111231812A - Police unmanned aerial vehicle-mounted installation device capable of automatically retracting along with sliding door

Info

Publication number: CN111231812A
Application number: CN202010138354.8A
Authority: CN
Inventors: 陈玲婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-06-05

Abstract

On-vehicle installation device of alert unmanned aerial vehicle who receive and releases along with the push-and-pull door is automatic relates to aircraft auxiliary assembly technical field, including the door, the below swing joint of door has the slider, the outside swing joint of slider has the slide rail, swing joint has the frame between door and the slider, and the slider is located the inside of spacing groove and rather than sliding connection, and the height of slide rail and the position of the height on the coplanar of slider and slide rail remain unchanged throughout, and the movement track of slider is on same straight line all the time promptly. This automatic alert vehicle-mounted installation device of unmanned aerial vehicle that receive and releases along with push-and-pull door, through the layered design of first shut down board and second shut down board, can improve the utilization ratio in space and vehicle-mounted unmanned aerial vehicle's quantity, utilize the door of both sides to control the motion of first shut down board and second shut down board respectively to install the unmanned aerial vehicle of different functions on two shut down boards, can select to open different doors according to the needs of difference, improved the device's application range and practicality.

Description

Police unmanned aerial vehicle-mounted installation device capable of automatically retracting along with sliding door

Technical Field

The invention relates to the technical field of aircraft auxiliary equipment, in particular to a vehicle-mounted mounting device of an unmanned aerial vehicle for police, which can be automatically folded and unfolded along with a sliding door.

Background

Along with the rapid development of unmanned aerial vehicle technique, its application field is also more and more extensive, wherein, police uses unmanned aerial vehicle with its quick motor response and good continuation of the journey ability and maneuverability, play important effect in aspects such as city public security patrol, because unmanned aerial vehicle is fixed rotor type generally, consequently take off and can guarantee its stability with certain space and platform when descending, unmanned aerial vehicle can occupy certain interior space of car when placing on the car simultaneously, make the utilization ratio in space descend, in addition, because configuration such as overall arrangement in the car and seat is inconvenient fixes unmanned aerial vehicle, consequently need to be applicable to unmanned aerial vehicle's installation after reforming transform interior space of car and facility, the cost has increased in the intangible.

In order to solve the problems, the inventor provides the police unmanned aerial vehicle-mounted mounting device capable of automatically retracting and releasing along with the sliding door, the police unmanned aerial vehicle-mounted mounting device has the advantages of not occupying the space in the vehicle and being convenient to retract and release, the device is fixed on the roof, the space in the vehicle can be prevented from being occupied by the unmanned aerial vehicle, meanwhile, a large space is provided for the unmanned aerial vehicle to take off and land, in addition, the device can be automatically retracted and released according to the action of opening and closing the door, the device can be used under the condition that the door is not opened, and the practicability of the device is.

Disclosure of Invention

In order to achieve the purposes of not occupying the space in the vehicle and being convenient to fold and unfold, the invention provides the following technical scheme: on-vehicle installation device of police unmanned aerial vehicle who receive and releases along with push-and-pull door is automatic, including door, slider, slide rail, spacing frame, spacing groove, position sleeve, slide bar, connecting seat, first board, U-shaped frame, activity tooth piece, second board, rack, double gear group, connecting rod, positioning seat, action wheel, first from driving wheel, second from driving wheel, toothed chain, sliding seat and baffle of stopping.

The position and connection relationship among the structures are as follows:

the lower part of the vehicle door is movably connected with a sliding block, the outer side of the sliding block is movably connected with a sliding rail, a frame is movably connected between the vehicle door and the sliding block, the sliding block is positioned in a limiting groove and is in sliding connection with the limiting groove, the height of the sliding rail and the height of the sliding block are on the same plane and the position of the sliding rail is always kept unchanged, namely the movement track of the sliding block is always on the same straight line, the lower part of the sliding rail is movably connected with a limiting frame, the inner part of the limiting frame is provided with the limiting groove, the back of the limiting groove is movably connected with two positioning sleeves, the inner parts of the two positioning sleeves are both movably connected with the sliding rod, the upper part of the limiting frame is fixedly connected with a connecting seat, one end of the connecting seat, which is far away from the limiting frame, is movably connected with a first stop plate, the, the position of the middle point in the horizontal direction of the limiting frame is on the same straight line, and the limiting frame and the limiting groove are symmetrically distributed according to the central line position of the connecting seat, namely the length of the limiting frame and the length of the limiting groove at the left end and the length of the limiting groove at the right end of the connecting seat are the same.

The lower portion of the vehicle door and one side opposite to the sliding block are movably connected with a U-shaped frame, a movable tooth block is movably connected with the lower portion of the U-shaped frame, a second parking plate is movably connected with the back face of the U-shaped frame, the specification size of the second parking plate is the same as that of the first parking plate, a rack is movably connected with the front face of the second parking plate, a double gear set is movably connected with the left side of the rack, the double gear set comprises two gears with the same specification, the two gears are vertically arranged, the central axes of the two gears are on the same straight line, the tooth pitches of the two gears are the same as those of the rack and the movable tooth block, the height of the upper gear and the height of the movable tooth block are on the same plane, the height of the lower gear and the height of the rack are on the same plane and are mutually meshed, connecting rods are movably connected with the left side and the right side of the rack, and the two connecting rods are fixedly connected with one ends, far away from the first parking plate and the The anti-falling block, the outside swing joint of connecting rod has the positioning seat, the middle part of positioning seat is provided with the hollow tube, two the connecting rod passes two hollow tubes respectively and all shuts down board fixed connection with the second.

The front face of the second parking plate is movably connected with a driving wheel, the upper end and the lower end of the driving wheel are respectively movably connected with a first driven wheel and a second driven wheel, the middle parts of the first driven wheel and the second driven wheel are fixedly connected with rotating shafts, two ends of a toothed chain are respectively wound on the two rotating shafts, the first driven wheel and the second driven wheel are respectively meshed with the driving wheel, the toothed chain is movably connected between the first driven wheel and the second driven wheel, the toothed chain is circular in shape, teeth which are uniformly distributed are arranged on the inner side of the toothed chain, a movable seat is movably connected inside the toothed chain, one end of the movable seat close to the toothed chain is of a semicircular structure, teeth which are matched with the toothed chain are arranged on the surface of the movable seat, sixteen movable seats are uniformly distributed by taking the circle center of the toothed chain as the basis, namely, the angles between two adjacent movable seats are the same, and the distances from the movable seats to, the outer side of the movable seat is movably connected with baffle plates, the number of the movable seat and the baffle plates is sixteen, and sixteen baffle plates correspond to sixteen movable seats respectively.

Preferably, the length of the positioning sleeve is greater than the maximum sliding stroke of the sliding rod, and the length of the positioning seat is greater than the maximum moving stroke of the connecting rod.

Preferably, the maximum moving stroke of the first stop plate is larger than the distance between the vehicle door and the sliding block, and the maximum moving stroke of the second stop plate is larger than the length of the U-shaped frame.

Preferably, the specifications and the sizes of the movable seats are the same, the specifications and the sizes of the baffle plates are the same, and the baffle plates are of curved surface structures and are fixedly connected with the movable seats.

Preferably, the two positioning sleeves are fixedly connected through a connecting piece, namely the positions of the two positioning sleeves are always kept unchanged, namely the motion tracks of the sliding rod, the first stop plate and the limiting frame are always on the same straight line.

Preferably, the positions of the two positioning seats are always kept unchanged, namely the second stopping plate, the two connecting rods and the rack always move along the central axis of the positioning seat.

Compared with the prior art and products, the invention has the beneficial effects that:

1. this alert vehicle-mounted installation device of unmanned aerial vehicle that receive and releases along with the push-and-pull door is automatic, through the slide rail, can provide the support for the motion of slider, guarantee its stability at motion in-process movement track, can restrict the position of slider simultaneously, prevent to take place skew to cause the influence to the result of use because of the slider, the device's stability has been improved, through spacing frame and spacing groove, can utilize the shape of self to make the up-and-down motion under the drive of slider when the slider motion, and then drive first shut down plate motion, the action drives the slider motion through opening and shutting of door, secondary operation has been avoided, certain operating time has been saved, the convenient advantage that receives and releases of the device has been realized.

2. This automatic alert vehicle-mounted installation device of unmanned aerial vehicle who receive and releases along with push-and-pull door, through remaining opposite side door with the U-shaped frame and connecting, it moves left or right through opening and shutting of door drive equally, rotation direction opposite's principle when utilizing two gear engagement, can make the second shut down the board and realize the automatic purpose of receiving and releasing, and simultaneously, through the layered design of first shut down board and second shut down board, can improve the utilization ratio in space and vehicle-mounted unmanned aerial vehicle's quantity, the efficiency of public security patrol is improved, in addition, drive door with first shut down board and second shut down board separately, the motion of first shut down board and second shut down board is controlled respectively to the door of both sides promptly, install the unmanned aerial vehicle of different functions on first shut down board and second shut down board, can select to open different doors according to the needs of difference, the application range and the practicality of the device have been improved.

3. This automatic alert vehicle-mounted installation device of unmanned aerial vehicle who receive and releases along with push-and-pull door, clockwise or anticlockwise rotation through making the action wheel, control first from the direction of rotation of driving wheel and second from the driving wheel, and then make the angle change of baffle, can make unmanned aerial vehicle normally take off and land under the condition that does not use the door, when the initiative wheel is made clockwise rotation, it all makes anticlockwise rotation from driving wheel and second to drive first from driving wheel, the baffle is close to the size grow of chain centre of a circle department this moment, otherwise then the baffle is close to the size diminish of chain centre of a circle department, through adjusting the rotation range of action wheel, the size that the changeable baffle is close to chain centre of a circle department, and then can make the device adapt to not unidimensional unmanned aerial vehicle, the practicality and the suitability of the device have been improved, simultaneously need not reform transform car inner space and accessory, use cost.

Drawings

FIG. 1 is a schematic view of a connection structure of a first shutdown plate and a limit frame according to the present invention, wherein each structure is at an initial position and the first shutdown plate is in a retracted state;

FIG. 2 is a schematic view of a connection structure of the stop frame and the slide block according to the present invention, wherein the stop frame and the slide block are at an initial position, that is, the slide block is located at the right portion of the stop frame, and the first shutdown plate is in a retracted state;

FIG. 3 is a schematic diagram of the movement traces of the stop frame and the slide block according to the present invention, wherein the slide block is located at the left portion of the stop frame and the first shutdown plate is in a deployed state;

FIG. 4 is a schematic view of the connection structure of the positioning sleeve and the sliding rod according to the present invention, wherein the positioning sleeve and the sliding rod are in an initial state, i.e., the sliding rod does not move, and the first shutdown plate is in a retracted state;

FIG. 5 is a schematic diagram showing the movement traces of the positioning sleeve and the sliding rod according to the present invention, wherein the sliding rod moves upward and pushes the first shutdown plate to synchronously move in the same direction, and the first shutdown plate is in a deployed state;

FIG. 6 is a schematic view of a connection structure of the rack and the dual gear set according to the present invention, wherein each structure is at an initial position and the second shutdown plate is in a retracted state;

FIG. 7 is a schematic view of the movement track of the rack and double gear set according to the present invention, wherein the movable gear block moves leftwards to drive the double gear set to rotate anticlockwise, and the rack and the second shutdown plate are in an unfolded state;

FIG. 8 is a schematic view of a connection structure of the movable seat and the baffle of the present invention, wherein each structure is in an initial state, and the size of the baffle near the center of the toothed chain is the smallest;

fig. 9 is a schematic diagram of the movement tracks of the movable seat and the baffle, in which when the driving wheel rotates clockwise, the driving wheel drives both the first driven wheel and the second driven wheel to rotate counterclockwise, and at this time, the size of the baffle near the center of the toothed chain increases.

In the figure: 1-vehicle door, 2-slide block, 3-slide rail, 4-limit frame, 5-limit groove, 6-locating sleeve, 7-slide bar, 8-connecting seat, 9-first stop plate, 10-U-shaped frame, 11-movable tooth block, 12-second stop plate, 13-rack, 14-double gear set, 15-connecting rod, 16-locating seat, 17-driving wheel, 18-first driven wheel, 19-second driven wheel, 20-toothed chain, 21-movable seat and 22-baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1-9:

this automatic alert vehicle-mounted installation device of unmanned aerial vehicle of receiving and releasing along with push-and-pull door, including door 1, slider 2, slide rail 3, spacing frame 4, spacing groove 5, position sleeve 6, slide bar 7, connecting seat 8, first board 9 that stops, U-shaped frame 10, activity tooth piece 11, second board 12 that stops, rack 13, double gear set 14, connecting rod 15, positioning seat 16, action wheel 17, first follow driving wheel 18, second follow driving wheel 19, chain gear 20, sliding seat 21 and baffle 22.

Wherein:

a. two locating sleeves 6 are fixedly connected through a connecting piece, namely, the positions of two locating sleeves 6 are always kept unchanged, namely, the movement tracks of a sliding rod 7, a first stop plate 9 and a limiting frame 4 are always on the same straight line, the limiting frame 4 and the limiting groove 5 are both of a Z-shaped structure, the central lines of a connecting seat 8 and the first stop plate 9 are on the same straight line with the position of the middle point in the horizontal direction of the limiting frame 4, the limiting frame 4 and the limiting groove 5 are symmetrically distributed with the reference of the central line of the connecting seat 8, namely, the lengths of the limiting frame 4 and the limiting groove 5 at the left end and the right end of the connecting seat 8 are the same.

b. The maximum motion stroke of first board 9 that stops is greater than the distance between door 1 to slider 2, the maximum motion stroke of second board 12 that stops is greater than the length of U-shaped frame 10, the middle part of positioning seat 16 is provided with the hollow tube, two connecting rods 15 pass two hollow tubes respectively and all with second board 12 fixed connection that stops, the specification and size of second board 12 are the same with the specification and size of first board 9 that stops, the equal fixedly connected with anticreep piece of one end that first board 9 and second board 12 were kept away from respectively to two connecting rods 15 and two slide bars 7.

c. Swing joint has the frame between door 1 and the slider 2, slider 2 be located the inside of spacing groove 5 and rather than sliding connection, slide rail 3 highly and slide rail 2 highly on the coplanar and slide rail 3's position remain unchanged all the time, namely slide rail 2's movement track is on the same straight line all the time, sliding seat 21's specification and size is all the same, baffle 22 be curved surface structure and with the sliding seat 21 between be fixed connection.

Wherein:

d. the positions of the two positioning seats 16 are always kept unchanged, namely, the second parking plate 12, the two connecting rods 15 and the rack 13 always move along the central axis of the positioning seats 16, the middle parts of the first driven wheel 18 and the second driven wheel 19 are fixedly connected with rotating shafts, two ends of the toothed chain 20 are respectively wound on the two rotating shafts, the first driven wheel 18 and the second driven wheel 19 are respectively meshed with the driving wheel 17, and the toothed chain 20 is circular and is provided with teeth which are uniformly distributed on the inner side.

e. The double-gear set 14 comprises two gears with the same specification, the two gears are vertically arranged, the central axes of the two gears are on the same straight line, the tooth pitch of the two gears is the same as that of the rack 13 and the movable tooth block 11, the height of the upper gear and that of the movable tooth block 11 are on the same plane, the height of the lower gear and that of the rack 13 are on the same plane and are meshed with each other, the length of the positioning sleeve 6 is larger than the maximum sliding stroke of the sliding rod 7, and the length of the positioning seat 16 is larger than the maximum moving stroke of the connecting rod 15.

f. The one end that movable seat 21 is close to toothed chain 20 is semi-circular structure and the surface is provided with the tooth with toothed chain 20 looks adaptation, and the quantity of movable seat 21 and baffle 22 is sixteen, and sixteen baffles 22 correspond with sixteen movable seats 21 respectively, and sixteen movable seat 21 use the centre of a circle of toothed chain 20 as according to being evenly distributed, and the angle between two adjacent movable seats 21 is the same promptly, and movable seat 21 is the same to the distance of the centre of a circle of toothed chain 20.

In use, the initial positions and connections between the structures are as follows:

through frame swing joint,

slider

2 and 3 sliding connection of slide rail between slider 2 and the door 1, slider 2 is located the inside of spacing groove 5 and rather than sliding connection, and two position sleeves 6 are located the back of spacing frame 4, and two slide bars 7 peg graft with two position sleeves 6 activity respectively, and the top of two slide bars 7 all with first board 9 fixed connection that stops, through connecting seat 8 swing joint between first board 9 that stops and the spacing frame 4.

The U-shaped frame 10 is movably connected with the movable tooth block 11 through a bolt, the second stopping plate 12 is movably connected with the rack 13 through a bolt, the rack 13 is positioned on the right side of the double-gear set 14 and meshed with the double-gear set, the two connecting rods 15 are movably inserted into the two positioning seats 16 respectively, and the two connecting rods 15 are connected with the second stopping plate 12.

The first driven wheel 18 and the second driven wheel 19 are respectively positioned at the upper end and the lower end of the driving wheel 17 and are meshed with the driving wheel, the two ends of the toothed chain 20 are respectively movably connected with the first driven wheel 18 and the second driven wheel 19, the movable seat 21 is positioned inside the toothed chain 20 and is meshed with the toothed chain, and the baffle plate 22 is fixedly connected with the movable seat 21.

Please refer to fig. 1, fig. 6 and fig. 8 for the above structure and process.

In an initial state, namely when the sliding block 2 is positioned at the right end of the limiting groove 5, the first stopping plate 9 is positioned at the back of the vehicle door 1, namely the top of the first stopping plate 9 does not exceed the top of the vehicle door 1 at the moment, the vehicle door 1 is pulled to move leftwards, and at the moment, the sliding block 2 can be driven to synchronously move in the same direction, because the sliding block 2 is positioned in the limiting groove 5 and the limiting groove 5 is in a Z shape, the first stopping plate 9 is movably connected with the limiting frame 4 through the connecting seat 8, the two sliding rods 7 are inserted in the two positioning sleeves 6 and connected with the first stopping plate 9, and the positions of the two positioning sleeves 6 are always kept unchanged, when the sliding block 2 moves leftwards, the limiting frame 4 can be pushed upwards, when the limiting frame 4 moves upwards, the first stopping plate 9 can be driven to synchronously move in the same direction, namely the first stopping plate 9 moves to the outer side of the vehicle door 1 at the moment.

The door 1 is pushed to move to the right, and the first stop plate 9 moves to the home position again in the opposite direction to the above-described process movement locus.

The above structure and process are shown in FIGS. 1-5.

Similarly, since the U-shaped frame 10 is connected to the other side of the vehicle door 1, and the movable teeth 11 are movably connected to the U-shaped frame 10, when the vehicle door 1 is pushed, the U-shaped frame 10 and the movable teeth 11 can be driven to synchronously move in the same direction, since the double gear set 14 is composed of an upper gear and a lower gear, the movable teeth 11 and the upper gear are on the same plane, and the rack 13 and the lower gear are on the same plane and meshed therewith, when the vehicle door 1 is opened, even if the vehicle door 1 moves leftwards, the movable teeth 11 synchronously move leftwards, when the vehicle door moves to be meshed with the double gear set 14, the vehicle door can be pushed to rotate anticlockwise, at this time, the double gear set 14 can drive the rack 13 to move upwards, that is, at this time, the second parking plate 12 moves upwards to the outer.

When the vehicle door 1 is closed, namely when the vehicle door moves rightwards, the movable toothed block 11 moves rightwards synchronously, when the movable toothed block 11 moves to be meshed with the double gear set 14, the movable toothed block can be pushed to rotate clockwise, at the moment, the double gear set 14 can drive the rack 13 to move downwards, namely, at the moment, the second stop plate 12 moves to the initial position.

The above structure and process are shown in FIGS. 6-7.

The driving wheel 17 is rotated manually to rotate clockwise, because the first driven wheel 18 and the second driven wheel 19 are both meshed with the driving wheel 17, the principle of the planetary gear can be known, at the moment, the first driven wheel 18 and the second driven wheel 19 both rotate anticlockwise, namely, at the moment, the toothed chain 20 rotates clockwise, the movable seat 21 meshed with the toothed chain can be driven to synchronously move in the same direction, at the moment, the movable seat 21 can drive the baffle plate 22 connected with the movable seat to synchronously move in the same direction, namely, the angle between the baffle plates 22 is inclined, and at the moment, the size of the baffle plate 22 close to the circle center of the toothed chain 20 is increased.

Similarly, the driving wheel 17 is rotated counterclockwise, and in contrast to the above process, the size of the baffle 22 near the center of the toothed chain 20 is reduced.

The above structure and process are shown in FIGS. 8-9.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. Automatic alert vehicle-mounted installation device of unmanned aerial vehicle of receiving and releasing along with push-and-pull door, including door (1), its characterized in that: a sliding block (2) is movably connected below the vehicle door (1), a sliding rail (3) is movably connected to the outer side of the sliding block (2), a limiting frame (4) is movably connected below the sliding rail (3), a limiting groove (5) is formed in the limiting frame (4), two positioning sleeves (6) are movably connected to the back of the limiting groove (5), a sliding rod (7) is movably connected to the inner parts of the two positioning sleeves (6), a connecting seat (8) is fixedly connected above the limiting frame (4), and a first shutdown plate (9) is movably connected to one end, away from the limiting frame (4), of the connecting seat (8);

a U-shaped frame (10) is movably connected to one side, opposite to the sliding block (2), below the vehicle door (1), a movable tooth block (11) is movably connected to the lower portion of the U-shaped frame (10), a second stopping plate (12) is movably connected to the back of the U-shaped frame (10), a rack (13) is movably connected to the front of the second stopping plate (12), a double gear set (14) is movably connected to the left side of the rack (13), connecting rods (15) are movably connected to the left side and the right side of the rack (13), and a positioning seat (16) is movably connected to the outer side of each connecting rod (15);

the front face of the second stop plate (12) is movably connected with a driving wheel (17), the upper end and the lower end of the driving wheel (17) are respectively movably connected with a first driven wheel (18) and a second driven wheel (19), a toothed chain (20) is movably connected between the first driven wheel (18) and the second driven wheel (19), the inner portion of the toothed chain (20) is movably connected with a movable seat (21), and the outer side of the movable seat (21) is movably connected with a baffle (22).

2. The vehicle-mounted installation device of the police unmanned aerial vehicle capable of being automatically retracted and released along with the sliding door according to claim 1, and is characterized in that: the automobile door is characterized in that a frame is movably connected between the automobile door (1) and the sliding block (2), the sliding block (2) is located inside the limiting groove (5) and is in sliding connection with the limiting groove, the height of the sliding rail (3) and the height of the sliding block (2) are on the same plane, and the position of the sliding rail (3) is always kept unchanged, namely the movement track of the sliding block (2) is always on the same straight line.

3. The vehicle-mounted installation device of the police unmanned aerial vehicle capable of being automatically retracted and released along with the sliding door according to claim 1, and is characterized in that: spacing frame (4) and spacing groove (5) are "Z" font structure, the central line of connecting seat (8) and first board (9) that stops, and the position of mid point is on same straight line on spacing frame (4) horizontal direction, and spacing frame (4) and spacing groove (5) are symmetrical distribution with the central line position reference of connecting seat (8), and the length that is located spacing frame (4) and spacing groove (5) at both ends about connecting seat (8) promptly is the same.

4. The vehicle-mounted installation device of the police unmanned aerial vehicle capable of being automatically retracted and released along with the sliding door according to claim 1, and is characterized in that: the middle part of positioning seat (16) is provided with the hollow tube, two connecting rod (15) pass two hollow tubes respectively and all stop board (12) fixed connection with the second, the specification and size of second stop board (12) is the same with the specification and size of first stop board (9), two connecting rod (15) and two the equal fixedly connected with anticreep piece of one end that first stop board (9) and second stop board (12) were kept away from respectively to slide bar (7).

5. The vehicle-mounted installation device of the police unmanned aerial vehicle capable of being automatically retracted and released along with the sliding door according to claim 1, and is characterized in that: the double-gear set (14) comprises two gears with the same specification, the two gears are vertically arranged, the central axes of the two gears are on the same straight line, the tooth pitches of the two gears are the same as those of the rack (13) and the movable tooth block (11), the height of the upper gear is on the same plane as that of the movable tooth block (11), and the height of the lower gear is on the same plane as that of the rack (13) and the two gears are meshed with each other.

6. The vehicle-mounted installation device of the police unmanned aerial vehicle capable of being automatically retracted and released along with the sliding door according to claim 1, and is characterized in that: the equal fixedly connected with pivot in middle part from driving wheel (18) and second driven wheel (19), the both ends of toothed chain (20) twine respectively in two pivots, first driven wheel (18) and second are followed driving wheel (19) and are engaged with action wheel (17) respectively, the shape of toothed chain (20) is circular and the inboard tooth that is provided with evenly distributed.

7. The vehicle-mounted installation device of the police unmanned aerial vehicle capable of being automatically retracted and released along with the sliding door according to claim 1, and is characterized in that: the one end that sliding seat (21) is close to toothed chain (20) is semicircular structure and the surface is provided with the tooth with toothed chain (20) looks adaptation, the quantity of sliding seat (21) and baffle (22) is sixteen, sixteen baffle (22) are corresponding with sixteen sliding seat (21) respectively, sixteen sliding seat (21) are for being according to being evenly distributed with the centre of a circle of toothed chain (20), adjacent two promptly angle between sliding seat (21) is the same, and sliding seat (21) are the same to the distance in the centre of a circle of toothed chain (20).