CN114809872A

CN114809872A - Automatic welcome gate

Info

Publication number: CN114809872A
Application number: CN202210451099.1A
Authority: CN
Inventors: 秦永红; 王海明; 杨晨
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-29
Anticipated expiration: 2042-04-26
Also published as: CN114809872B

Abstract

The invention relates to the field of gates, in particular to an automatic welcoming gate which comprises a sliding mechanism, a multifunctional mechanism and a power supply mechanism, wherein the multifunctional mechanism is installed on one side of the sliding mechanism, and the power supply mechanism is installed on one side of the multifunctional mechanism; the multifunctional mechanism comprises a door plate, a support, a motor, a gear, a sliding groove, a sliding plate, a rack, a linkage strip, a moving lug, a lug groove, a gas bin, an extrusion plate, a fixing lug, a tension spring, a communication hole, a storage bin, a display screen and a tension spring, wherein the support is fixedly installed on one side of the door plate, and the motor is fixedly installed on one side of the support. The video playing mechanism is adopted, the motor rotates forwards to drive the extrusion plate to move towards the interior of the gas cabin, so that gas in the interior of the gas cabin is extruded to enter the containing cabin through the communicating hole, the display screen is extruded to move towards the surface layer of the door plate by the gushed gas, a video can be played, the traditional banner hanging is replaced, the video playing mechanism is safe and environment-friendly, and popular contents are more colorful.

Description

Automatic welcome gate

Technical Field

The invention relates to the field of gates, in particular to an automatic welcome gate.

Background

A door, an entrance of a building or a device installed at the entrance and capable of opening and closing, the door being an entity dividing a limited space and functioning to connect and close the entrance of two or more spaces, the classification of the door: from the effect of door, mainly can divide into gate, entrance door, indoor door, explosion vent, antiknock door, prevent fire door, meet guests' door etc. according to the position branch: outer door, interior door.

The existing welcoming gate is often used for meeting important occasions such as leadership observation, and a banner is hung on the gate for bearing welcoming words. However, the banner content has strong pertinence, that is, a single banner can only be used once, which causes resource waste, does not conform to the environmental protection concept, and the hanging banner needs to be operated at an ascending height, which has certain danger. The existing welcome gate represents welcome through the banner, and the banner is monotonous compared with a dynamic video, but most of the existing welcome gates are not provided with a display screen, so that the dynamic video cannot be played.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an automatic welcome gate, which solves the problems that: the existing welcoming gate is often used for meeting important occasions such as leadership observation, and a banner is hung on the gate for bearing welcoming words. However, the banner content has strong pertinence, that is, a single banner can only be used once, which causes resource waste, does not conform to the environmental protection concept, and the hanging banner needs to be operated at an ascending height, which has certain danger. The prior welcoming gate represents welcome through a banner, and the banner is monotonous compared with a dynamic video, but most of the prior welcoming gates are not provided with a display screen and cannot realize the playing of the dynamic video;

in order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides an automatic welcome gate which comprises a sliding mechanism, a multifunctional mechanism and a power supply mechanism, wherein the multifunctional mechanism is installed on one side of the sliding mechanism, and the power supply mechanism is installed on one side of the multifunctional mechanism;

the multifunctional mechanism comprises a door plate, a support, a motor, a gear, a sliding groove, a sliding plate, a rack, a linkage strip, a moving lug, a lug groove, a gas bin, an extrusion plate, a fixed lug, a tension spring, a communication hole, a storage bin, a display screen and a tension spring, wherein the support is fixedly arranged on one side of the door plate, the motor is fixedly arranged on one side of the support, the gear is fixedly arranged at one end of an output shaft of the motor, the sliding groove is formed in the middle of the door plate, the sliding plate is movably arranged in the middle of the sliding groove, the rack is fixedly embedded in the middle of one side of the sliding plate, the linkage strips are fixedly arranged on two symmetrical sides of the sliding plate, the moving lug is fixedly arranged on the same side of the two linkage strips, the two lug grooves are formed in the middle of the door plate, the two gas bins are formed in the middle of the door plate, and the extrusion plate is movably arranged in the middle of the two gas bins, two the equal fixed mounting in same one side of extrusion board has fixed lug, two the equal fixed mounting in same one side of extrusion board has tension spring, and the equal fixed mounting in one side of gas storehouse of the same one end of two tension spring has been seted up at the door plant middle part, storage storehouse middle part movable mounting has the display screen, display screen one side fixed mounting has tension spring, tension spring one end fixed mounting is in the inside one side of storage storehouse, all run through between storage storehouse and two gas storehouses and seted up the intercommunicating pore.

Further, slide mechanism includes wall body, slide rail, drive wheel, T type track groove, T type slider and pressure switch, wall body one side fixed mounting has the slide rail, slide rail middle part movable mounting has a plurality of drive wheels, T type track groove has been seted up at the wall body middle part, T type track groove middle part movable mounting has T type slider, T type track inslot portion one side fixed mounting has pressure switch.

Further, power mechanism includes solar panel, battery, dust removal board and screw, door plant top one side fixed mounting has solar panel, wall body one side fixed mounting has the battery, the dust removal board is installed to wall body one side, fixed mounting is run through at the dust removal board middle part has a plurality of screws, screw fixed mounting is in the wall body.

Further, the driving wheel can rotate by itself under the condition of being electrified.

Furthermore, the display screen is not in contact with the sliding plate and the rack, and the motor, the forward rotation switch of the motor and the pressure switch are connected in series.

Furthermore, the two lug grooves are used for moving the lugs and the linkage strip in the middle of the door panel.

Further, the rack is meshed with the gear.

Furthermore, the two fixed lugs are respectively in extrusion fit with the two movable lugs.

Furthermore, the ash removing material is arranged on one side of the ash removing plate, which is in contact with the solar panel.

Furthermore, the driving wheel is fixedly installed on one side of the bottom of the door panel, and the T-shaped sliding block is fixedly installed on one side of the door panel.

The invention has the following beneficial effects:

(1) the invention relates to an automatic welcome gate, which adopts a video playing mechanism, wherein a worker presses a motor forward rotation button, the motor rotates forward to drive a rack to move towards one side close to a storage battery so as to drive a sliding plate to move synchronously, thereby driving a linkage strip and a moving lug to move synchronously along a lug groove, when the moving lug contacts and presses the fixed lug, the fixed lug moves towards the inside of an air bin so as to drive a pressing plate to move towards the inside of the air bin, thereby pressing the air in the air bin to pass through a communication hole and enter a containing bin, at the moment, a tension spring is pressed and compressed by the pressing plate, a display screen is pressed by the inrush air to move towards the surface layer of a door plate, at the moment, a tension spring is stretched, when the vertex of the moving lug contacts with the vertex of the fixed lug, the motor stops rotating, at the moment, the display screen is flush with the surface layer of the door plate, a video can be played, and the traditional banner suspension is replaced, safe and environment-friendly, and the welcome content is more colorful.

(2) The automatic welcoming door adopts the automatic ash removing mechanism, the solar panel collects solar energy, and then the electric energy is stored in the storage battery. When the door is opened or closed, the surface layer of the solar panel can be rubbed with the dust removing plate, and the dust on the surface layer of the solar panel is automatically erased by opening or closing the door, so that the power generation efficiency of the solar panel is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of a back side of an automatic welcome gate according to the present invention;

fig. 2 is a schematic structural view of a multifunctional mechanism of an automatic welcome gate according to the present invention;

fig. 3 is a schematic view of an internal structure of a multifunctional mechanism of an automatic welcome gate according to the present invention;

fig. 4 is a further internal structural diagram of the multifunctional mechanism of the automatic welcome gate according to the present invention;

FIG. 5 is an enlarged view taken at A of FIG. 1;

FIG. 6 is an enlarged view of FIG. 1 at B;

FIG. 7 is an enlarged view at C of FIG. 2;

FIG. 8 is an enlarged view of FIG. 3 at D;

in the figure: 1. a sliding mechanism; 11. a wall body; 12. a slide rail; 13. a drive wheel; 14. a T-shaped track groove; 15. a T-shaped slider; 16. a pressure switch; 2. a multifunctional mechanism; 21. a door panel; 22. a support; 23. a motor; 24. a gear; 25. a sliding groove; 26. a sliding plate; 27. a rack; 28. a linkage bar; 29. moving the projection; 210. a bump groove; 211. a gas bin; 212. a pressing plate; 213. fixing the bump; 214. a tension spring; 215. a communicating hole; 216. a storage bin; 217. a display screen; 218. a tension spring; 3. a power supply mechanism; 31. a solar panel; 32. a storage battery; 33. a dust removing plate; 34. and (7) screws.

Detailed Description

In order to make the objects, technical means and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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.

The embodiment of the invention provides an automatic welcoming gate, and solves the problems that the existing welcoming gate is often used in important occasions such as welcoming leadership observation and the like, and a banner is hung on the gate and is used for bearing welcoming words. However, the banner content has strong pertinence, that is, a single banner can only be used once, which causes resource waste, does not conform to the environmental protection concept, and the hanging banner needs to be operated at an ascending height, which has certain danger. The prior welcoming gate represents welcome through a banner, and the banner is monotonous compared with a dynamic video, but most of the prior welcoming gates are not provided with a display screen and cannot realize the playing of the dynamic video;

in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: the existing welcoming door is improved, the display screen is additionally arranged to replace the traditional banner suspension, the display screen protection device is additionally arranged to prolong the service life of the display screen, and the solar power generation mechanism is additionally arranged to drive the movement mechanism, so that the welcoming door is more environment-friendly.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 8, an embodiment of the invention provides an automatic welcome gate, which includes a sliding mechanism 1, a multifunctional mechanism 2 and a power supply mechanism 3, wherein the multifunctional mechanism 2 is installed on one side of the sliding mechanism 1 and can play video, and the power supply mechanism 3 is installed on one side of the multifunctional mechanism 2 and can provide motion power for a person to be invented;

the multifunctional mechanism 2 comprises a door plate 21, a support 22, a motor 23, a gear 24, a sliding groove 25, a sliding plate 26, a rack 27, a linkage strip 28, a moving bump 29, a bump groove 210, an air chamber 211, a squeezing plate 212, a fixed bump 213, a tension spring 214, a communication hole 215, a containing bin 216, a display screen 217 and a tension spring 218, wherein the support 22 is fixedly arranged at one side of the door plate 21, the motor 23 is fixedly arranged at one side of the support 22, the support 22 is used for fixing the motor 23, the gear 24 is fixedly arranged at one end of an output shaft of the motor 23, the sliding groove 25 is formed in the middle of the door plate 21, the sliding plate 26 is movably arranged in the middle of the sliding groove 25, the rack 27 is fixedly embedded in the middle of one side of the sliding plate 26, the gear 24 is meshed with the rack 27 for transmission, the linkage strips 28 are fixedly arranged at two symmetrical sides of the sliding plate 26, the moving bumps 29 are fixedly arranged at the same side of the two linkage strips 28, the linkage strips 28 are used for linking the sliding plate 26 with the moving bumps 29, the middle part of the door plate 21 is provided with two lug grooves 210 for sliding the moving lugs 29, the middle part of the door plate 21 is provided with two air bins 211, the middle parts of the two air bins 211 are both movably provided with an extrusion plate 212, used for extruding the gas in the middle of the gas cabin 211, the same side of the two extrusion plates 212 is fixedly provided with a fixed lug 213, the same side of the two extrusion plates 212 is fixedly provided with a tension spring 214, for the reset of the extrusion plate 212, the same ends of the two tension springs 214 are fixedly arranged at one side inside the air chamber 211, the middle part of the door plate 21 is provided with an accommodating chamber 216, the middle part of the accommodating chamber 216 is movably provided with a display screen 217, one side of the display screen 217 is fixedly provided with a tension spring 218, a intercommunicating pore 215 has all run through between storage bin 216 and two gas bins 211 for the intercommunication storage bin 216 and gas bins 211.

Specifically, slide mechanism 1 includes wall body 11, slide rail 12, drive wheel 13, T type track groove 14, T type slider 15 and pressure switch 16, wall body 11 one side fixed mounting has slide rail 12, slide rail 12 middle part movable mounting has a plurality of drive wheels 13 for drive door plant 21, slide rail 12 is used for restricting the movement track of drive wheel 13, T type track groove 14 has been seted up at wall body 11 middle part, T type track groove 14 middle part movable mounting has T type slider 15, the inside one side fixed mounting in T type track groove 14 has pressure switch 16.

In this embodiment, when the door is closed, the worker presses the forward rotation button of the driving wheel 13, the driving wheel 13 rotates along the sliding rail 12, so as to drive the door panel 21 to move and close, and meanwhile, the door panel 21 moves to drive the T-shaped slider 15 to slide along the T-shaped rail groove 14 until the T-shaped slider 15 contacts the extrusion pressure switch 16, the driving wheel 13 stops rotating, and at this time, the forward rotation switch of the motor 23 is turned on; when the video needs to be played, the worker presses the forward rotation button of the motor 23, the motor 23 rotates forward, so as to drive the rack 27 to move towards one side close to the storage battery 32, thereby causing the slide plate 26, and thus the linkage bar 28 and the moving protrusions 29, to move synchronously along the protrusion grooves 210, when the moving protrusion 29 contacts and presses the fixing protrusion 213, the fixing protrusion 213 moves toward the inside of the air pocket 211, thereby driving the extrusion plate 212 to move towards the interior of the gas chamber 211, so as to extrude the gas in the interior of the gas chamber 211 through the communication hole 215 and enter the storage chamber 216, at this time, the tension spring 214 is extruded and compressed by the extrusion plate 212, the display screen 217 is extruded by the gushed gas to move towards the surface layer of the door panel 21, at this time, the tension spring 218 is stretched, when the top point of the moving lug 29 is contacted with the top point of the fixed lug 213, the motor 23 stops rotating, and the display screen 217 is flush with the surface layer of the door panel 21 at the moment and can play videos; when the door needs to be opened, a worker presses a reverse rotation button of a driving wheel 13, the driving wheel 13 reversely rotates along a sliding rail 12, the door panel 21 is driven to reversely move and open, meanwhile, the door panel 21 reversely moves to drive a T-shaped sliding block 15 to reversely slide along a T-shaped rail groove 14, the T-shaped sliding block 15 is separated from a pressure switch 16 and extrudes, the worker closes a display screen 217, the worker presses a reverse rotation button of a motor 23, the motor 23 reversely rotates to drive a rack 27 to move towards one side far away from a storage battery 32, so that a sliding plate 26 is driven to synchronously move, a linkage strip 28 and a moving lug 29 are driven to synchronously move along a lug groove 210, the moving lug 29 is gradually separated from a fixed lug 213 and extrudes, an extrusion plate 212 resets under the tension of a tension spring 214, and the display screen 217 resets under the tension of the tension spring 218.

Specifically, electrical mechanism 3 includes solar panel 31, battery 32, dusting board 33 and screw 34, and door plant 21 top one side fixed mounting has

solar panel

31, and 11 one side fixed mounting of wall body has battery 32 for store the electric energy, and dusting board 33 is installed to 11 one sides of wall body, is used for erasing solar panel 31 top layer dust, and dusting board 33 middle part runs through fixed mounting has a plurality of screws 34 for conveniently change dusting board 33, screw 34 fixed mounting is in wall body 11.

In this embodiment, the solar panel 31 collects solar energy and then stores the electrical energy in the battery 32. When the door is opened or closed, the surface of the solar panel 31 will rub against the dust removing plate 33 to remove the dust on the surface of the solar panel 31 and improve the power generation efficiency of the solar panel 31. The worker may periodically remove the screws 34 to replace the dust removing plate 33.

Specifically, the driving wheel 13 is self-rotatable when energized.

Specifically, the display screen 217 is not in contact with the sliding plate 26 and the rack 27, the motor 23, the forward rotation switch of the motor 23 and the pressure switch 16 are connected in series, and when the pressure switch 16 is pressed, that is, the door panel 21 is closed, the motor 23 can rotate forward.

Specifically, two cam grooves 210 allow the moving cam 29 and the link bar 28 to move in the middle of the door panel 21.

Specifically, the rack 27 is mounted in meshing engagement with the gear 24.

Specifically, the two fixing protrusions 213 are respectively press-fitted with the two moving protrusions 29.

Specifically, the side of the dust removing plate 33 in contact with the solar panel 31 is provided with dust removing material.

Specifically, the driving wheel 13 is fixedly installed at one side of the bottom of the door panel 21, and the T-shaped slider 15 is fixedly installed at one side of the door panel 21.

The specific working mode is as follows: when the door is closed, a worker presses a forward rotation button of the driving wheel 13, the driving wheel 13 rotates along the sliding rail 12, so that the door plate 21 is driven to move and close, meanwhile, the door plate 21 moves to drive the T-shaped sliding block 15 to slide along the T-shaped rail groove 14 until the T-shaped sliding block 15 contacts the extrusion pressure switch 16, the driving wheel 13 stops rotating, and at the moment, a forward rotation switch of a motor 23 of the motor 23 is turned on;

when the video needs to be played, the worker presses the forward rotation button of the motor 23, the motor 23 rotates forward, so as to drive the rack 27 to move towards one side close to the storage battery 32, thereby causing the slide plate 26, and thus the linkage bar 28 and the moving protrusions 29, to move synchronously along the protrusion grooves 210, when the moving protrusion 29 contacts and presses the fixing protrusion 213, the fixing protrusion 213 moves toward the inside of the air pocket 211, thereby driving the extrusion plate 212 to move towards the interior of the gas chamber 211, so as to extrude the gas in the interior of the gas chamber 211 through the communication hole 215 and enter the storage chamber 216, at this time, the tension spring 214 is extruded and compressed by the extrusion plate 212, the display screen 217 is extruded by the gushed gas to move towards the surface layer of the door panel 21, at this time, the tension spring 218 is stretched, when the top point of the moving lug 29 is contacted with the top point of the fixed lug 213, the motor 23 stops rotating, and the display screen 217 is flush with the surface layer of the door panel 21 at the moment and can play videos;

when the door needs to be opened, a worker presses a reverse rotation button of a driving wheel 13, the driving wheel 13 reversely rotates along a sliding rail 12, the door panel 21 is driven to reversely move and open, meanwhile, the door panel 21 reversely moves to drive a T-shaped sliding block 15 to reversely slide along a T-shaped rail groove 14, the T-shaped sliding block 15 is separated from a pressure switch 16 and extrudes, the worker closes a display screen 217, the worker presses a reverse rotation button of a motor 23, the motor 23 reversely rotates to drive a rack 27 to move towards one side far away from a storage battery 32, so that a sliding plate 26 is driven to synchronously move, a linkage strip 28 and a moving lug 29 are driven to synchronously move along a lug groove 210, the moving lug 29 is gradually separated from a fixed lug 213 and extrudes, an extrusion plate 212 resets under the tension of a tension spring 214, and the display screen 217 resets under the tension of the tension spring 218.

The solar panel 31 collects solar energy and then stores the electric energy in the storage battery 32. When the door is opened or closed, the surface of the solar panel 31 will rub against the dust removing plate 33 to remove the dust on the surface of the solar panel 31 and improve the power generation efficiency of the solar panel 31. The worker may periodically remove the screws 34 to replace the dust removing plate 33.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automatic usher's gate, includes slide mechanism (1), multifunction mechanism (2) and power mechanism (3), its characterized in that: a multifunctional mechanism (2) is installed on one side of the sliding mechanism (1), and a power supply mechanism (3) is installed on one side of the multifunctional mechanism (2);

the multifunctional mechanism (2) comprises a door plate (21), a support (22), a motor (23), a gear (24), a sliding groove (25), a sliding plate (26), a rack (27), a linkage strip (28), a moving lug (29), a lug groove (210), a gas bin (211), an extrusion plate (212), a fixed lug (213), a tension spring (214), a communication hole (215), a storage bin (216), a display screen (217) and a tension spring (218), wherein the support (22) is fixedly installed on one side of the door plate (21), the motor (23) is fixedly installed on one side of the support (22), the gear (24) is fixedly installed at one end of an output shaft of the motor (23), the sliding groove (25) is formed in the middle of the door plate (21), the sliding plate (26) is movably installed in the middle of the sliding groove (25), the rack (27) is fixedly installed in the middle of one side of the sliding plate (26), the sliding plate is characterized in that linkage strips (28) are fixedly arranged on two symmetrical sides of the sliding plate (26), moving convex blocks (29) are fixedly arranged on the same sides of the two linkage strips (28), two convex block grooves (210) are formed in the middle of the door plate (21), two air bins (211) are formed in the middle of the door plate (21), extrusion plates (212) are movably arranged in the middle of the two air bins (211), fixed convex blocks (213) are fixedly arranged on the same sides of the two extrusion plates (212), tension springs (214) are fixedly arranged on the same sides of the two extrusion plates (212), the same ends of the two tension springs (214) are fixedly arranged on one side of the inside of the air bins (211), a storage bin (216) is formed in the middle of the door plate (21), a display screen (217) is movably arranged in the middle of the storage bin (216), and a tension spring (218) is fixedly arranged on one side of the display screen (217), tension spring (218) one end fixed mounting is in the inside one side of containing bin (216), all run through between containing bin (216) and two gas bins (211) and seted up intercommunicating pore (215).

2. An automatic welcome gate as claimed in claim 1 wherein: slide mechanism (1) includes wall body (11), slide rail (12), drive wheel (13), T type track groove (14), T type slider (15) and pressure switch (16), wall body (11) one side fixed mounting has slide rail (12), slide rail (12) middle part movable mounting has a plurality of drive wheel (13), T type track groove (14) have been seted up at wall body (11) middle part, T type track groove (14) middle part movable mounting has T type slider (15), the inside one side fixed mounting in T type track groove (14) has pressure switch (16).

3. An automatic welcome gate as claimed in claim 2 wherein: power mechanism (3) include solar panel (31), battery (32), dusting board (33) and screw (34), door plant (21) top one side fixed mounting has solar panel (31), wall body (11) one side fixed mounting has battery (32), dusting board (33) are installed to wall body (11) one side, dusting board (33) middle part is run through fixed mounting has a plurality of screws (34), screw (34) fixed mounting is in wall body (11).

4. An automatic welcome gate as claimed in claim 3 wherein: the driving wheel (13) can rotate by itself when being electrified.

5. The automatic welcome door as claimed in claim 4, wherein: the display screen (217) is not in contact with the sliding plate (26) and the rack (27), and the motor (23), the forward rotation switch of the motor (23) and the pressure switch (16) are connected in series.

6. An automatic welcome gate as claimed in claim 5 wherein: the two lug grooves (210) are used for the movement of the moving lug (29) and the linkage strip (28) in the middle of the door panel (21).

7. An automatic welcome gate as claimed in claim 6 wherein: the rack (27) is meshed with the gear (24).

8. The automatic welcome door as claimed in claim 7, wherein: the two fixed lugs (213) are respectively in press fit with the two movable lugs (29).

9. An automatic welcome gate as claimed in claim 8 wherein: and an ash removing material is arranged on one side of the ash removing plate (33) which is in contact with the solar panel (31).

10. An automatic welcome gate as claimed in claim 9 wherein: the driving wheel (13) is fixedly arranged on one side of the bottom of the door panel (21), and the T-shaped sliding block (15) is fixedly arranged on one side of the door panel (21).