Propaganda equipment and use method thereof

Abstract

The invention relates to the technical field of propaganda equipment and methods, in particular to propaganda equipment and a using method thereof.The propaganda equipment comprises a fixing assembly, a telescopic assembly is fixedly installed at the lower end of the fixing assembly, a moving assembly is fixedly installed at the lower end of the telescopic assembly, and the fixing assembly comprises a first motor; a first threaded rod is fixedly installed at the output end of the first motor, first moving sleeves are installed on the two sides of the first threaded rod, and the purposes that the proper length of the display screen is adjusted through the fixing assembly, the display screen is fixed, then the telescopic column of the telescopic assembly shrinks in the telescopic sleeve, and the height of the equipment is reduced are achieved; a teacher can conveniently move the device to a designated place, meanwhile, a second moving sleeve moves on a second threaded rod, protection frames are combined, the protection frames protect a display screen, then through a moving assembly telescopic rod, wheel shells drive wheels to descend, and the teacher can conveniently move the device to the designated place in a moving mode.

Description

Technical Field

[0001] The present invention relates to the technical field of publicity equipment, and in particular to a publicity equipment and a use method thereof. Background Art

[0002] School publicity equipment is an important tool for improving the school image, spreading campus culture, and releasing important information. School electronic bulletin boards, also known as digital bulletin boards or electronic display screens, are large electronic display devices that use LED, LCD or other high-definition display technologies and are controlled by computers to display various types of information in real time. They are usually installed in public areas of schools, such as school gates, in front of teaching buildings, library entrances, canteens and other crowded places, in order to maximize the coverage and influence of information dissemination;

[0003] At present, electronic bulletin boards are directly fixed on campus walls or through columns. When the school organizes a school anniversary or holiday party, the equipment needs to be placed at the venue to display conference information to all teachers and students. However, the equipment cannot be moved to the venue quickly and conveniently, or it is easy to fall during the movement, resulting in varying degrees of damage to the device's main display screen. Summary of the invention

[0004] The purpose of the present invention is to provide a promotional device and a method for using the same. The length of the display screen is adjusted appropriately by a fixing component to fix the display screen. The telescopic column of the telescopic component is then retracted inside the telescopic sleeve, so that the height of the device is lowered, which is convenient for teachers to move the device to a designated location. At the same time, the second moving sleeve moves relative to each other on the second threaded rod, so that the protective frame is merged. The protective frame protects the display screen. Then, the telescopic rod of the moving component is used to make the wheel shell drive the wheel to descend, so that the teacher can move the device to a designated location by moving.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a publicity device and a method of using the same, comprising a fixed component, a telescopic component is fixedly installed at the lower end of the fixed component, a moving component is fixedly installed at the lower end of the telescopic component, the fixed component comprises a first motor, a first threaded rod is fixedly installed at the output end of the first motor, first moving sleeves are installed on both sides of the first threaded rod, fixed blocks are fixedly installed on the first moving sleeves, moving plates are fixedly installed on the fixed blocks, fixed plates are installed inside the moving plates, a first fixed frame is installed on one side of the moving plate, protective frames are installed on both sides of the outer surface of the first fixed frame, the telescopic component comprises a second motor, a second threaded rod is installed at the output end of the second motor, Gears are fixedly installed on both sides of the second threaded rod, a telescopic column is fixedly connected to one side of the gear, a telescopic sleeve is fixedly installed on the outer surface of the telescopic column, a fixing frame is fixedly installed on one side of the telescopic column, a piston pipe is fixedly installed on one side of the fixing frame, a suction cup is fixedly installed on the lower end of the piston pipe, a piston rod is installed inside the piston pipe, a piston block is fixedly installed on one side of the piston rod, a second movable sleeve is installed on the second threaded rod on both sides, a U-shaped rod is fixedly installed on the second movable sleeve, the movable assembly includes a fixed seat, a telescopic rod is fixedly installed on the fixed seat, a wheel shell is fixedly installed on one side of the telescopic rod, a wheel axle is fixedly installed inside the wheel shell, and wheels are slidably installed on both sides of the wheel axle.

[0006] Preferably, slide grooves are provided inside the movable plates on both sides, and fixing rods are installed on the movable plates on both sides.

[0007] Preferably, a slider is provided on one side of the movable plate, a slide groove is provided on one side of the first fixed frame, and the slider on one side of the movable plate is slidably connected to the slide groove on one side of the first fixed frame.

[0008] Preferably, a slide groove is also provided on the other side of the first fixing frame, and sliding blocks are provided inside the protection frames on both sides, and the slide groove on the other side of the first fixing frame is slidably connected to the sliding blocks inside the protection frames on both sides.

[0009] Preferably, the telescopic columns on both sides are provided with tooth grooves, and the tooth grooves are meshed with gears.

[0010] Preferably, one side of the piston rod is fixedly connected to one side of the telescopic sleeve, and protective shells are provided on the telescopic sleeves on both sides.

[0011] Preferably, the gear and the second motor are both installed inside the protective shell, and both sides of the second threaded rod pass through the protective shell and are connected to the gear.

[0012] Preferably, the upper ends of the telescopic sleeves on both sides are fixedly connected to the lower end of the first fixing frame, and the lower ends of the telescopic columns on both sides are fixedly connected to a fixing seat.

[0013] Preferably, one side of the telescopic rods on both sides is fixedly connected to the lower end of the telescopic sleeve, and the other side of the telescopic rods extends through the fixing seat and is fixedly connected to the upper end of the wheel shell.

[0014] A method for using a publicity device, using any of the publicity devices described above, comprising the following steps;

[0015] Step 1: The teacher starts the first motor, which drives the first threaded rod to rotate, and the first threaded rod drives the first movable sleeves on both sides to move away from both sides, thereby driving the movable plate to move to a size suitable for the length of the display screen used;

[0016] Step 2: When the school organizes a school anniversary or holiday party, the equipment needs to be placed at the venue. The teacher can start the second motor, and the second motor drives the second threaded rod to rotate, and the second threaded rod drives the gears on both sides to rotate, and the gears are engaged with the tooth grooves on the telescopic column, and the telescopic column shrinks inside the telescopic sleeve, so that the height of the equipment is reduced. When the telescopic sleeve shrinks with the telescopic column, the telescopic sleeve presses down the telescopic rod, so that the wheel shell drives the wheel to descend, and at the same time, the second movable sleeve moves relative to each other on the second threaded rod, so that the protective frame is merged;

[0017] Step 3: After the teacher moves the equipment to the designated location, he starts the second threaded rod. The second motor drives the second threaded rod to rotate, and the second threaded rod drives the gears on both sides to rotate. The gears engage with the teeth on the telescopic column, and the telescopic column extends inside the telescopic sleeve. The height of the equipment increases, and the telescopic sleeve pulls the telescopic rod, so that the wheel shell drives the wheel to retract into the fixed seat. At the same time, the telescopic sleeve drives the piston rod to pull up inside the piston pipe, driving the piston block to pull up, so that the suction cup sucks the ground tightly.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The teacher starts the first motor, which drives the first threaded rod to rotate. The first threaded rod drives the first movable sleeves on both sides to move away from each other, thereby driving the movable plate to move to a size suitable for the length of the display screen, and fixing the display screen through the fixing rod;

[0020] 2. When the school organizes a school anniversary or holiday party, the equipment needs to be placed at the venue. The teacher can start the second motor, the second motor drives the second threaded rod to rotate, the second threaded rod drives the gears on both sides to rotate, the gears are engaged with the teeth on the telescopic column, the telescopic column shrinks inside the telescopic sleeve, and the height of the equipment is reduced, which is convenient for the teacher to move the equipment to the designated location;

[0021] 3. When the telescopic sleeve and the telescopic column are contracted, the telescopic sleeve presses down the telescopic rod, so that the wheel shell drives the wheel to descend, which is convenient for the teacher to move the device to the designated location. At the same time, the second moving sleeve moves on the second threaded rod to merge the protective frame to prevent the device from falling during the movement. The protective frame protects the display screen.

[0022] 4. After the teacher moves the equipment to the designated location, the second motor drives the second threaded rod to rotate, and the second threaded rod drives the gears on both sides to rotate. The gears engage with the teeth on the telescopic column, and the telescopic column extends inside the telescopic sleeve. The height of the equipment increases, and the telescopic sleeve pulls the telescopic rod, so that the wheel shell drives the wheel to retract into the fixed seat. At the same time, the telescopic sleeve drives the piston rod to pull up inside the piston pipe, driving the piston block to pull up, and the piston block draws excess air from the suction cup, so that the suction cup 207 is adsorbed on the ground, and the auxiliary device is fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a right side schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a left side schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure analysis of the present invention;

[0026] Figure 4 The fixed component telescopic component of the present invention;

[0027] Figure 5 It is a schematic diagram of the telescopic assembly of the present invention;

[0028] Figure 6 It is a rear view schematic diagram of the telescopic assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the mobile component analysis of the present invention.

[0030] In the figure: 1. fixed component; 102. first motor; 103. first threaded rod; 104. first movable sleeve; 105. fixed block; 106. movable plate; 107. fixed plate; 108. first fixed frame; 109. protective frame; 110. fixed rod; 2. telescopic component; 201. second motor; 202. second threaded rod; 203. gear; 204. telescopic column; 205. telescopic sleeve; 206. fixed frame; 207. suction cup; 208. piston pipe; 209. piston rod; 210. piston block; 211. second movable sleeve; 212. U-shaped rod; 213. protective shell; 3. mobile component; 301. fixed seat; 302. telescopic rod; 303. wheel shell; 304. wheel axle; 305. wheel. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides a promotional device and a method for using the same, comprising a fixed component 1 for adjusting a fixed display screen, a telescopic component 2 fixedly mounted at the lower end of the fixed component 1, the telescopic component 2 performs telescopic adjustment on the entire device, a moving component 3 fixedly mounted at the lower end of the telescopic component 2, the moving component 3 facilitates the movement of the entire device;

[0033] See also Figures 1 to 4 As shown, the fixing assembly 1 includes a first motor 102, which is a power source and provides the power required by the device. The teacher starts the first motor 102, and a first threaded rod 103 is fixedly installed at the output end of the first motor 102. The first motor 102 drives the first threaded rod 103 to rotate. First movable sleeves 104 are installed on both sides of the first threaded rod 103. The first threaded rod 103 drives the first movable sleeve 104 to move. A fixed block 105 is fixedly installed on the first movable sleeve 104, and the fixed block 105 follows the first threaded rod 103. The movable sleeve 104 moves, and a movable plate 106 is fixedly installed on the fixed block 105. The movable plate 106 follows the fixed block 105 to move and adjust the length required for the fixed installation of the display screen. A fixed plate 107 is installed inside the movable plate 106 to fix the movable plate 106. A first fixed frame 108 is installed on one side of the movable plate 106 to fix the internal device. Protective frames 109 are installed on both sides of the outer surface of the first fixed frame 108 to protect the display screen.

[0034] See also Figures 5 and 6As shown, the telescopic component 2 includes a second motor 201, and the second motor 201 is a power source, providing the power required by the device. The teacher starts the second motor 201, and a second threaded rod 202 is installed at the output end of the second motor 201. The second motor 201 drives the second threaded rod 202 to rotate, and gears 203 are fixedly installed on both sides of the second threaded rod 202, so that the second threaded rod 202 drives the gear 203 to rotate, and a telescopic column 204 is fixedly connected to one side of the gear 203. The gear 203 is connected to the telescopic column 204, driving the telescopic column 204 to move, so that the telescopic column 204 is telescoped inside the telescopic sleeve 205, thereby driving the telescopic sleeve 205 to telescope, and a fixing frame 206 is fixedly installed on one side of the telescopic column 204 for fixing, and one side of the fixing frame 206 is A piston pipe 208 is fixedly installed, and the piston pipe 208 is used to provide a place for the internal device to move. A suction cup 207 is fixedly installed at the lower end of the piston pipe 208, and the suction cup 207 is used to fix the auxiliary device. A piston rod 209 is installed inside the piston pipe 208, and the piston rod 209 drives other devices to move. A piston block 210 is fixedly installed on one side of the piston rod 209, and the piston block 210 draws out excess air inside the suction cup 207, so that the suction cup 207 is adsorbed on the ground. While the second threaded rod 202 rotates, a second moving sleeve 211 is installed on the second threaded rod 202 on both sides, and the second threaded rod 202 drives the second moving sleeve 211 to move, and a U-shaped rod 212 is fixedly installed on the second moving sleeve 211 for fixing and transmitting power;

[0035] See also Figure 7 As shown, the moving assembly 3 includes a fixed seat 301 for fixing the entire device. When the telescopic column 204 and the telescopic sleeve 205 are telescoped, the moving assembly 3 is driven to move. A telescopic rod 302 is fixedly installed on the fixed seat 301 for fixed connection and telescoping without hindering the movement of other devices. A wheel shell 303 is fixedly installed on one side of the telescopic rod 302. The wheel shell 303 is fixed. A wheel axle 304 is fixedly installed inside the wheel shell 303 to fix and support the wheel 305 to rotate. Wheels 305 are slidably installed on both sides of the wheel axle 304 to move the device.

[0036] In an optional embodiment, sliding grooves are provided inside the movable plates 106 on both sides for movement, and the movable plates 106 on both sides are installed with fixing rods 110 for fixing the display screen.

[0037] In an optional embodiment, a slider is provided on one side of the movable plate 106, and the slider is used to assist the movable plate 106 to move. A slide groove is provided on one side of the first fixed frame 108, and the slide groove is used to provide a sliding place and a guiding function for the slider. The slider on one side of the movable plate 106 is slidably connected with the slide groove on one side of the first fixed frame 108 to assist the movable plate 106 to move.

[0038] In an optional embodiment, a slide groove is also provided on the other side of the first fixed frame 108, and the slide groove is used to provide a sliding place and a guiding function for the slider. Sliders are provided inside the protective frames 109 on both sides. The slide groove on the other side of the first fixed frame 108 is slidably connected to the sliders inside the protective frames 109 on both sides. The auxiliary movable plate protective frame 109 moves on the first fixed frame 108, and the second movable sleeve 211 moves relative to each other on the second threaded rod 202, so that the protective frames 109 are merged, so that the protective frames 109 protect the display screen.

[0039] In an optional embodiment, teeth are provided on the telescopic columns 204 on both sides, and the teeth are meshed with the gears 203 , so that when the gears 203 are meshed with the teeth, the telescopic columns 204 are driven to telescope inside the telescopic sleeve 205 .

[0040] In an optional embodiment, one side of the piston rod 209 is fixedly connected to one side of the telescopic sleeve 205, and the piston rod 209 moves with the telescopic sleeve 205. The telescopic sleeves 205 on both sides are provided with protective shells 213 to protect the internal devices.

[0041] In an optional embodiment, the gear 203 and the second motor 201 are both installed inside the protective shell 213 to protect the gear 203 and the second motor 201 , and both sides of the second threaded rod 202 pass through the protective shell 213 to connect with the gear 203 .

[0042] In an optional embodiment, the upper ends of the telescopic sleeves 205 on both sides are fixedly connected to the lower end of the first fixed frame 108, and the lower ends of the telescopic columns 204 on both sides are fixedly connected to the fixed seats 301. When the telescopic columns 204 are telescoped inside the telescopic sleeves 205, they are fixedly connected to the lower end of the first fixed frame 108 through the telescopic sleeves 205 on both sides, driving the entire device to move.

[0043] In an optional embodiment, one side of the telescopic rod 302 on both sides is fixedly connected to the lower end of the telescopic sleeve 205, and the other side of the telescopic rod 302 extends through the fixed seat 301 and is fixedly connected to the upper end of the wheel shell 303. When the second motor 201 drives the second threaded rod 202 to rotate, the second threaded rod 202 drives the gears 203 on both sides to rotate, and the gears 203 engage with the teeth and grooves on the telescopic column 204. The telescopic column 204 extends inside the telescopic sleeve 205, the height of the equipment increases, and the telescopic sleeve 205 pulls the telescopic rod 302, so that the wheel shell 303 drives the wheel 305 to retract into the fixed seat 301.

[0044] A method for using a promotional device comprises the following steps:

[0045] Step 1: The teacher starts the first motor 102, and the first motor 102 drives the first threaded rod 103 to rotate. The first threaded rod 103 drives the first movable sleeves 104 on both sides to move away from both sides, thereby driving the movable plate 106 to move to a size suitable for the length of the display screen used;

[0046] Step 2: When the school organizes a school anniversary or holiday party, the equipment needs to be placed at the venue. The teacher can start the second motor 201, and the second motor 201 drives the second threaded rod 202 to rotate, and the second threaded rod 202 drives the gears 203 on both sides to rotate, and the gears 203 are engaged with the teeth on the telescopic column 204, and the telescopic column 204 shrinks inside the telescopic sleeve 205, so that the height of the equipment is reduced. When the telescopic sleeve 205 shrinks with the telescopic column 204, the telescopic sleeve 205 presses down the telescopic rod 302, so that the wheel shell 303 drives the wheel 305 to descend, and at the same time, the second movable sleeve 211 moves relative to each other on the second threaded rod 202, so that the protective frame 109 is merged;

[0047] Step 3: After the teacher moves the equipment to the designated location, the second motor 201 drives the second threaded rod 202 to rotate, and the second threaded rod 202 drives the gears 203 on both sides to rotate. The gears 203 engage with the teeth on the telescopic column 204, and the telescopic column 204 extends inside the telescopic sleeve 205. The height of the equipment increases, and the telescopic sleeve 205 pulls the telescopic rod 302, so that the wheel housing 303 drives the wheel 305 to shrink into the fixed seat 301. At the same time, the telescopic sleeve 205 drives the piston rod 209 to pull up inside the piston pipe 208, driving the piston block 210 to pull up, so that the suction cup 207 is tightly sucked to the ground.

[0048] Working principle: the teacher starts the first motor 102, the first motor 102 drives the first threaded rod 103 to rotate, the first threaded rod 103 drives the first movable sleeves 104 on both sides to move away from both sides, thereby driving the movable plate 106 to move to a size suitable for the length of the display screen used, and fixing the display screen through the fixing rod. When the school organizes a school celebration or a holiday party, it is necessary to put the equipment at the venue. The teacher can start the second motor 201, the second motor 201 drives the second threaded rod 202 to rotate, and the second threaded rod 202 drives the gears 203 on both sides to rotate. The gears 203 are meshed with the teeth on the telescopic column 204, and the telescopic column 204 shrinks inside the telescopic sleeve 205, thereby reducing the height of the equipment, so that the teacher can move the equipment to the designated location. When the telescopic sleeve 205 shrinks with the telescopic column 204, the telescopic sleeve 205 presses down the telescopic rod 302, so that the wheel shell 303 drives the wheel 305 to descend, so that the teacher can pass The device is moved to the designated location in a moving manner, and at the same time, the second moving sleeve 211 moves relative to each other on the second threaded rod 202, so that the protective frame 109 is merged to prevent the device from falling during the moving process. The protective frame 109 protects the display screen. After the teacher moves the device to the designated location, the second motor 201 drives the second threaded rod 202 to rotate, and the second threaded rod 202 drives the gears 203 on both sides to rotate. The gears 203 engage with the teeth and grooves on the telescopic column 204, and the telescopic column 204 extends inside the telescopic sleeve 205. The height of the device is increased, and the telescopic sleeve 205 pulls the telescopic rod 302, so that the wheel shell 303 drives the wheel 305 to shrink into the fixed seat 301. At the same time, the telescopic sleeve 205 drives the piston rod 209 to pull up inside the piston pipe 208, and drives the piston block 210 to pull up. The piston block 210 draws out excess air inside the suction cup 207, so that the suction cup 207 is adsorbed on the ground, and the auxiliary device is fixed.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A promotional device and a method of using the same, comprising a fixing assembly (1), characterized in that: A telescopic component (2) is fixedly mounted on the lower end of the fixed component (1), and a movable component (3) is fixedly mounted on the lower end of the telescopic component (2); The fixing assembly (1) comprises a first motor (102), a first threaded rod (103) is fixedly mounted on the output end of the first motor (102), first moving sleeves (104) are mounted on both sides of the first threaded rod (103), a fixing block (105) is fixedly mounted on the first moving sleeve (104), a moving plate (106) is fixedly mounted on the fixing block (105), a fixing plate (107) is mounted inside the moving plate (106), a first fixing frame (108) is mounted on one side of the moving plate (106), and protective frames (109) are mounted on both sides of the outer surface of the first fixing frame (108); The telescopic assembly (2) comprises a second motor (201), a second threaded rod (202) is mounted on the output end of the second motor (201), gears (203) are fixedly mounted on both sides of the second threaded rod (202), one side of the gear (203) is fixedly connected to a telescopic column (204), a telescopic sleeve (205) is fixedly mounted on the outer surface of the telescopic column (204), a fixing frame (206) is fixedly mounted on one side of the telescopic column (204), and the fixing frame (206) is fixedly mounted on the outer surface of the telescopic column (204). A piston pipe (208) is fixedly installed on one side of the fixed frame (206), a suction cup (207) is fixedly installed on the lower end of the piston pipe (208), a piston rod (209) is installed inside the piston pipe (208), a piston block (210) is fixedly installed on one side of the piston rod (209), a second movable sleeve (211) is installed on both sides of the second threaded rod (202), and a U-shaped rod (212) is fixedly installed on the second movable sleeve (211); The moving assembly (3) comprises a fixed seat (301), a telescopic rod (302) is fixedly mounted on the fixed seat (301), a wheel shell (303) is fixedly mounted on one side of the telescopic rod (302), a wheel axle (304) is fixedly mounted inside the wheel shell (303), and wheels (305) are slidably mounted on both sides of the wheel axle (304).

2. A promotional device according to claim 1, characterized in that: Slide grooves are provided inside the movable plates (106) on both sides, and fixing rods (110) are installed on the movable plates (106) on both sides.

3. A promotional device according to claim 1, characterized in that: A slider is provided on one side of the movable plate (106), a slide groove is provided on one side of the first fixed frame (108), and the slider on one side of the movable plate (106) is slidably connected to the slide groove on one side of the first fixed frame (108).

4. A promotional device according to claim 4, characterized in that: A sliding groove is also provided on the other side of the first fixing frame (108), and sliding blocks are provided inside the protection frames (109) on both sides. The sliding groove on the other side of the first fixing frame (108) is slidably connected to the sliding blocks inside the protection frames (109) on both sides.

5. A promotional device according to claim 1, characterized in that: The telescopic columns (204) on both sides are provided with tooth grooves, and the tooth grooves are meshed with the gears (203).

6. A promotional device according to claim 1, characterized in that: One side of the piston rod (209) is fixedly connected to one side of the telescopic sleeve (205), and protective shells (213) are provided on the telescopic sleeves (205) on both sides.

7. A promotional device according to claim 6, characterized in that: The gear (203) and the second motor (201) are both installed inside the protective shell (213), and both sides of the second threaded rod (202) penetrate the protective shell (213) and are connected to the gear (203).

8. A promotional device according to claim 1, characterized in that: The upper ends of the telescopic sleeves (205) on both sides are fixedly connected to the lower end of the first fixing frame (108), and the lower ends of the telescopic columns (204) on both sides are fixedly connected to the fixing seats (301).

9. A promotional device according to claim 1, characterized in that: One side of the telescopic rod (302) on both sides is fixedly connected to the lower end of the telescopic sleeve (205), and the other side of the telescopic rod (302) extends through the fixing seat (301) and is fixedly connected to the upper end of the wheel shell (303).

10. A method for using a promotional device, using the promotional device described in any one of 1 to 9 above, characterized in that: The method comprises the following steps: Step 1: The teacher starts the first motor (102), and the first motor (102) drives the first threaded rod (103) to rotate, and the first threaded rod (103) drives the first movable sleeves (104) on both sides to move away from both sides, thereby driving the movable plate (106) to move to a size suitable for the length of the display screen used; Step 2: When the school organizes a school anniversary or holiday party, the equipment needs to be placed at the venue. The teacher can start the second motor (201), and the second motor (201) drives the second threaded rod (202) to rotate. The second threaded rod (202) drives the gears (203) on both sides to rotate. The gears (203) are meshed with the teeth on the telescopic column (204), and the telescopic column (204) is retracted inside the telescopic sleeve (205), thereby reducing the height of the equipment. When the telescopic sleeve (205) cooperates with the telescopic column (204) to retract, the telescopic sleeve (205) presses down the telescopic rod (302), so that the wheel shell (303) drives the wheel (305) to descend, and at the same time, the second movable sleeve (211) moves relative to each other on the second threaded rod (202), so that the protective frame (109) is merged; Step 3: After the teacher moves the device to the designated location, the second threaded rod (202) is started, and the second motor (201) drives the second threaded rod (202) to rotate, and the second threaded rod (202) drives the gears (203) on both sides to rotate, and the gears (203) are meshed with the teeth on the telescopic column (204), and the telescopic column (204) is extended inside the telescopic sleeve (205), and the height of the device is increased. The telescopic sleeve (205) pulls the telescopic rod (302), so that the wheel shell (303) drives the wheel (305) to shrink into the fixed seat (301), and at the same time, the telescopic sleeve (205) drives the piston rod (209) to pull up inside the piston pipe (208), drives the piston block (210) to pull up, and makes the suction cup (207) suck the ground tightly.

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