CN113558382B

CN113558382B - Anti-cheating desk for college campus examinations

Info

Publication number: CN113558382B
Application number: CN202110894772.4A
Authority: CN
Inventors: 马智聪
Original assignee: Hebei Haijie Modern Educational Equipment Co ltd
Current assignee: Hebei Haijie Modern Educational Equipment Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-10-28
Anticipated expiration: 2041-08-05
Also published as: CN113558382A

Abstract

The invention relates to an anti-cheating desk, in particular to an anti-cheating desk for high school campus examinations. The anti-cheating desk for the high school students is capable of improving the test accuracy of the students and simultaneously avoiding the influence of the states of the students on the students. The utility model provides a school of high school is anti-cheating desk for examination, includes: a bottom plate support plate installed at one side of the bottom plate; the placing plate is arranged on the top of the supporting plate; the blocking mechanism is arranged between the bottom plate and the placing plate and is used for blocking the sight of others; and the lifting mechanism is arranged between the separation mechanism and the placing plate. First electric putter's extension end drives the baffler and upwards slides and rise to shelter from the examination paper, the action of practising fraud is avoided to other examinee's sight of separation, and when the examinee left the court, second electric putter's extension end shortened and makes the lifter plate drive examination paper move down, when avoiding the examinee to leave the examination room in disorder see other people's examination paper.

Description

Anti-cheating desk for college campus examinations

Technical Field

The invention relates to an anti-cheating desk, in particular to an anti-cheating desk for high school campus examinations.

Background

The desk is the used desk of student's study, use stainless steel and timber equipment to form usually, the student is during the school, in order to test student's study progress and level, often can carry out the examination, the used desk of examination generally all is ordinary student's desk, mainly constitute by table and drawer, the structure is general fairly simple, do not possess the function of preventing cheating, lead to the student to have the transmission answer during the examination, the action of practising fraud such as stealing and seeing other people examination paper, thereby influence the precision that the student tested, the teacher can't effectively know the student situation of studying, and current desk structure all is fixed, can't adjust according to the student's height, the state that leads to student's study receives the influence.

Therefore, it is necessary to provide a cheating-prevention desk for high school students, which can improve the testing accuracy of the students and can prevent the student states from being affected.

Disclosure of Invention

In order to overcome the defect that the precision of student testing is poor due to the fact that a common desk does not have a cheating prevention function, the invention aims to provide an cheating prevention desk for high school students, which can improve the precision of student testing and can avoid the condition of the students from being affected.

The technical scheme is as follows: the utility model provides a school of high school is anti-cheating desk for examination, includes: a bottom plate support plate installed at one side of the bottom plate; the placing plate is arranged on the top of the supporting plate; the blocking mechanism is arranged between the bottom plate and the placing plate and used for blocking the sight of others; and the lifting mechanism is arranged between the blocking mechanism and the placing plate.

As an improvement of the above, the blocking mechanism includes: the mounting plate is mounted on the bottom plate; the fixing plate is arranged at the bottom of the placing plate; the first distance sensor is arranged on one side of the fixed plate; the first electric push rod is arranged on one side, close to the first distance sensor, of the supporting plate; the blocking plate is arranged at the extending end of the first electric push rod and is connected with the placing plate in a sliding mode; the backup plate is arranged on the upper part of the mounting plate in a sliding way.

As an improvement of the above scheme, the lifting mechanism comprises: two second electric push rods are arranged and are arranged on two sides of the lower part of the fixing plate; the lifting plate is arranged between the extending ends of the two second electric push rods; the hollow cylinder is arranged on one side of the barrier plate; the contact block is arranged in the hollow cylinder in a sliding manner; the first spring is arranged between the contact block and the hollow cylinder; first pressure sensor installs and places the board bottom and be close to one side of hollow section of thick bamboo, first pressure sensor and contact piece cooperation.

As an improvement of the above aspect, the clamping mechanism includes: at least two bearing seats are arranged on the top of the placing plate; the two clamping plates are rotatably arranged between the two bearing seats on the same side; the first torsion springs are at least two and are all arranged between the clamping plate and the bearing seat.

As an improvement of the above, the adjusting mechanism includes: the first rack is arranged on one side of the upper part of the mounting plate; the first gear is rotatably arranged on one side, close to the first rack, of the lower part of the backup plate, and the first gear is meshed with the first rack; the rotating handle is arranged on the first gear in a sliding manner; at least two second springs are arranged and are arranged between the backup plate and the mounting plate; the guide plate is arranged on the other side of the upper part of the mounting plate; the positioning plate is arranged on the guide plate in a sliding manner; the third spring is arranged between the positioning plate and the guide plate; the number of the rotating plates is at least two, the rotating plates are rotatably arranged on the positioning plate and are matched with the backup plate; the second torsional springs are at least two and are arranged between the rotating plate and the positioning plate.

As an improvement of the above scheme, the device further comprises a moving mechanism, wherein the moving mechanism comprises: the protective shell is arranged on the other side of the bottom plate; the second distance sensor is arranged on one side of the protective shell; the first speed reducing motor is arranged in the protective shell; the second gear is arranged on the output shaft of the first speed reducing motor; the second rack is arranged on the upper part of the mounting plate and is meshed with the second gear; the sliding rail is installed on the bottom plate and is connected with the installation plate in a sliding mode.

As an improvement of the scheme, the system further comprises a monitoring mechanism, and the monitoring mechanism comprises: the second pressure sensor is arranged on the lower part of the backup plate in a sliding manner; the fourth spring is arranged between the second pressure sensor and the backup plate; the second speed reducing motor is arranged on one side of the upper part of the barrier plate; the camera is installed on second gear motor's output shaft, and the camera is connected with the baffler rotary type.

As an improvement of the above scheme, the method further comprises the following steps: the control box is arranged on one side, close to the first electric push rod, of the upper portion of the supporting plate, a switching power supply, a control module and a power supply module are arranged in the control box, the switching power supply supplies power to the whole device, the output end of the switching power supply is electrically connected with the power supply module, the power supply module is connected with a power main switch through a circuit, the control module is electrically connected with the power supply module, and the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first distance sensor, the first pressure sensor, the second distance sensor and the second pressure sensor are electrically connected with the control module, and the first electric push rod, the second electric push rod, the first speed reducing motor and the second speed reducing motor are connected with the control module through a peripheral circuit.

The invention has the beneficial effects that: 1. the extension of first electric putter's extension end drives the baffling board and upwards slides and rise to shelter from the examination paper, other examinee's sight of separation, avoid the examinee to cheat the action.

2. When the examinee leaves the examination room, the extension end of the second electric push rod is shortened, so that the lifting plate drives the examination paper to move downwards, and the examinee is prevented from stealing other examination papers when leaving the examination room.

3. When the lifting plate drives the examination paper to move upwards to be matched with the clamping plate to clamp the examination paper, the examination paper is prevented from falling to the ground due to external factors.

4. The staff rotates first gear, first gear revolve while with first rack cooperation to make first gear drive backup plate upwards slide, so, can mediate the backup plate height according to examinee's height.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a schematic diagram of a first partial body structure according to the present invention.

Fig. 4 is a schematic diagram of a second partial body structure according to the present invention.

Fig. 5 is a schematic perspective view of a first blocking mechanism according to the present invention.

Fig. 6 is a schematic perspective view of a second blocking mechanism of the present invention.

Fig. 7 is a schematic perspective view of the lifting mechanism of the present invention.

Fig. 8 is a schematic partial perspective view of the lifting mechanism of the present invention.

Fig. 9 is a schematic perspective view of a first clamping mechanism of the present invention.

Fig. 10 is a schematic perspective view of a second clamping mechanism of the present invention.

Fig. 11 is a schematic perspective view of a first adjustment mechanism of the present invention.

Fig. 12 is a schematic perspective view of a second adjustment mechanism of the present invention.

Fig. 13 is a schematic perspective view of the moving mechanism of the present invention.

Fig. 14 is a schematic partial perspective view of the monitoring mechanism of the present invention.

Fig. 15 is a schematic perspective view of a monitoring mechanism according to the present invention.

Fig. 16 is a circuit block diagram of the present invention.

Fig. 17 is a schematic circuit diagram of the present invention.

Part names and serial numbers in the figure: 1_ bottom plate, 2_ support plate, 20_ control box, 3_ placing plate, 4_ blocking mechanism, 40_ mounting plate, 41_ fixing plate, 42_ first distance sensor, 44_ first electric push rod, 45_ blocking plate, 46_ backup plate, 5_ lifting mechanism, 50_ second electric push rod, 51_ lifting plate, 52_ hollow cylinder, 53_ contact block, 54_ first spring, 55_ first pressure sensor, 6_ clamping mechanism, 60_ bearing block, 61_ clamping plate, 62_ first torsion spring, 7_ adjusting mechanism, 70_ first rack, 71_ first gear, 72_ rotating handle, 73_ second spring, 74_ guide plate, 75_ positioning plate, 76_ third spring, 77_ rotating plate, 78_ second torsion spring, 8_ moving mechanism, 80_ protective housing, 81_ second distance sensor, 82_ first speed reduction motor, 83_ second gear, 84_ second rack, 85_ supporting plate, 9_ monitoring mechanism, 90_ second pressure sensor, 91_ sliding rail, 92_ fourth pressure sensor, 93_ camera head motor, 93_ camera head.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

Example 1

The utility model provides a desk of preventing practising fraud for high school's campus examination, as shown in fig. 1-8, including bottom plate 1, backup pad 2, place board 3, separation mechanism 4 and elevating system 5, the bottom plate 1 rear side is equipped with

backup pad

2, and 2 tops of backup pad are equipped with places board 3, are equipped with separation mechanism 4 between bottom plate 1 and the board 3 of placing, and separation mechanism 4 and place and be equipped with elevating system 5 between board 3.

When using the device, the staff presses power master switch to make equipment circular telegram, during the examination, surrounds the desktop through separation mechanism 4, and other student's of separation sight, the back is accomplished in the examination, and elevating system 5 drives examination paper and moves down the entering and places 3 below of board to avoid the examinee to steal other people's examination paper in the confusion when leaving the examination hall, after the equipment uses the completion, the staff presses power master switch once more and makes equipment outage.

As shown in fig. 1, 2, 3, 5, 6, 7, 11, 13, 14 and 15, the blocking mechanism 4 includes a mounting plate 40, a fixing plate 41, a first distance sensor 42, a first electric push rod 44, a blocking plate 45 and a backup plate 46, the mounting plate 40 is slidably disposed on the base plate 1, the fixing plate 41 is disposed at the bottom of the placing plate 3, the first distance sensor 42 is disposed at the rear side of the fixing plate 41, the first electric push rod 44 is disposed at the rear side of the support plate 2, the blocking plate 45 is disposed at the extended end of the first electric push rod 44, the blocking plate 45 is slidably connected to the placing plate 3, and the backup plate 46 is slidably disposed at the upper portion of the mounting plate 40.

When the device is used, an examinee pulls the backup plate 46 to move forwards, and then the mounting plate 40 slides forwards on the bottom plate 1, when the first distance sensor 42 senses that the distance between the examinee and the backup plate 46 is larger than a preset value, the first distance sensor 42 sends a signal, the control module receives the signal and then controls the extension end of the first electric push rod 44 to extend for three seconds, the extension end of the first electric push rod 44 extends to drive the blocking plate 45 to slide upwards to block the periphery of the placement plate 3, then the examinee sits on the backup plate 46 to take an examination on the placement plate 3, after the examination is completed, the examinee resets the backup plate 46 and the mounting plate 40, when the first distance sensor 42 senses that the distance between the examinee and the backup plate 46 is smaller than the preset value, the first distance sensor 42 sends a signal, and the control module receives the signal and then controls the extension end of the first electric push rod 44 to shorten for three seconds, so that the blocking plate 45 slides downwards to reset, and the examination paper can be surrounded, and the sight lines of other examinees can be blocked.

As shown in fig. 1, 2, 3, 7 and 8, the lifting mechanism 5 includes a second electric push rod 50, a lifting plate 51, a hollow cylinder 52, a contact block 53, a first spring 54 and a first pressure sensor 55, the second electric push rod 50 is disposed on both sides of the lower portion of the fixing plate 41, the lifting plate 51 is connected between the extending ends of the two second electric push rods 50, the hollow cylinder 52 is disposed on the right side of the blocking plate 45, the contact block 53 is slidably disposed in the hollow cylinder 52, the first spring 54 is connected between the contact block 53 and the hollow cylinder 52, the first pressure sensor 55 is disposed on the right side of the bottom of the placing plate 3, and the first pressure sensor 55 is matched with the contact block 53.

When the device is used, the barrier plate 45 slides upwards to drive the contact block 53 to move upwards through the hollow cylinder 52, when the contact block 53 moves upwards to be in contact with the first pressure sensor 55, the first pressure sensor 55 is extruded to send a signal, when the first pressure sensor 55 is extruded, the first spring 54 can buffer the extrusion force, the damage of the first pressure sensor 55 is avoided, the control module receives the signal and then controls the extension end of the second electric push rod 50 to extend for one second, the extension end of the second electric push rod 50 extends to drive the lifting plate 51 to move upwards and be parallel to the placing plate 3, test papers can be conveniently placed for being answered by examinees, when the barrier plate 45 slides downwards to separate the contact block 53 from the first pressure sensor 55, the first pressure sensor 55 sends a signal, the control module receives the signal and then controls the extension end of the second electric push rod 50 to shorten for one second, the extension end of the second electric push rod 50 contracts to drive the lifting plate 51 to move downwards, so that the test papers move downwards to enter the fixing plate 41, and thus, when the test papers leave the test sites when the test sites are kept aside.

Example 2

On the basis of embodiment 1, as shown in fig. 1, fig. 2, fig. 3, fig. 9 and fig. 10, the clamping device 6 further includes a clamping mechanism 6, the clamping mechanism 6 includes bearing seats 60, clamping plates 61 and first torsion springs 62, the bearing seats 60 are symmetrically arranged on the left and right sides of the top of the placing plate 3, the clamping plates 61 are rotatably arranged between the two bearing seats 60 on the same side, and the first torsion springs 62 are wound between the clamping plates 61 and the bearing seats 60 on the same side.

When using the device, the examination paper is put on the lifting plate 51, the lifting plate 51 upwards moves to drive the examination paper to upwards move, when the lifting plate 51 upwards moves to contact with the clamping plate 61, the lifting plate 51 upwards moves to push the clamping plate 61 to rotate on the bearing seat 60, the first torsion spring 62 deforms, after the lifting plate 51 stops upwards moving, under the effect of the first torsion spring 62, the clamping plate 61 is matched with the lifting plate 51 to compress the examination paper tightly, the examination paper is prevented from dropping, in the examination process, an examinee can automatically rotate the clamping plate 61 to loosen the examination paper, the examination paper is conveniently turned over, when the lifting plate 51 downwards moves to separate from the clamping plate 61, under the reset effect of the first torsion spring 62, the clamping plate 61 is reversely rotated to reset accordingly, therefore, the examination paper can be compressed, and the examination paper is prevented from dropping.

In addition to embodiment 1, as shown in fig. 2, 11 and 12, the present invention further includes an adjusting mechanism 7, the adjusting mechanism 7 includes a first rack 70, a first gear 71, a rotating handle 72, a second spring 73, a guide plate 74, a positioning plate 75, a third spring 76, a rotating plate 77 and a second torsion spring 78, the first rack 70 is disposed on the right side of the upper portion of the mounting plate 40, the first gear 71 is rotatably disposed on the right side of the lower portion of the backup plate 46, the first gear 71 is engaged with the first rack 70, the rotating handle 72 is slidably disposed on the right side of the first gear 71, a row of the second springs 73 is connected between the backup plate 46 and the mounting plate 40, the guide plate 74 is disposed on the left side of the upper portion of the mounting plate 40, the positioning plate 75 is slidably disposed on the guide plate 74, the third spring 76 is wound between the positioning plate 75 and the guide plate 74, three rotating plates 77 are rotatably disposed on the positioning plate 75, the rotating plates 77 are all engaged with the backup plate 46, and the second torsion springs 78 are wound between the rotating plates 77 and the positioning plate 75.

When the device is used, an examinee can rotate the rotating handle 72 according to the height of the examinee, the rotating handle 72 rotates to drive the first gear 71 to rotate, the first gear 71 moves upwards while rotating under the action of the first rack 70, the first gear 71 moves upwards to drive the backup plate 46 to slide upwards in the mounting plate 40, the second spring 73 deforms, the backup plate 46 slides upwards to extrude the rotating plate 77 to rotate upwards, the second torsion spring 78 deforms, after the backup plate 46 slides upwards to be separated from the rotating plate 77, the rotating plate 77 rotates downwards to reset under the resetting action of the second torsion spring 78, at the moment, the rotating plate 77 can limit the backup plate 46, rotating plate 77 supports backup plate 46 with the cooperation of first gear 71, when needs reset backup plate 46, the staff pulling locating plate 75 slides forward, third spring 76 takes place to deform, locating plate 75 slides forward and drives rotating plate 77 and move forward and break away from with backup plate 46, at this moment, under the effect that second spring 73 resets, backup plate 46 slides down thereupon and resets, then the staff loosens locating plate 75, under the effect that third spring 76 resets, locating plate 75 drives rotating plate 77 and moves backward thereupon and resets, so, can adjust backup plate 46 height according to examinee's height, avoid influencing the examinee's state.

On the basis of embodiment 1, as shown in fig. 2, fig. 3 and fig. 13, the mobile device further includes a moving mechanism 8, the moving mechanism 8 includes a protective casing 80, a second distance sensor 81, a first decelerating motor 82, a second gear 83, a second rack 84 and a sliding rail 85, the protective casing 80 is disposed on the front side of the bottom plate 1, the second distance sensor 81 is disposed on the left side of the protective casing 80, the first decelerating motor 82 is disposed in the protective casing 80, the second gear 83 is disposed on an output shaft of the first decelerating motor 82, the second rack 84 is disposed on the upper portion of the mounting plate 40, the second rack 84 is engaged with the second gear 83, the sliding rail 85 is disposed on the bottom plate 1, and the sliding rail 85 is slidably connected with the mounting plate 40.

When the device is used, when the second distance sensor 81 senses that someone is close to, the second distance sensor 81 sends a signal, the control module receives the signal and then controls the output shaft of the first speed reducing motor 82 to rotate for five seconds, the output shaft of the first speed reducing motor 82 rotates to drive the second gear 83 to rotate, the second gear 83 rotates to drive the second rack 84 to move forward, the second rack 84 moves forward to drive the mounting plate 40 to slide forward, the mounting plate 40 can slide forward while the sliding rail 85 can guide the mounting plate, after an examinee sits on the backup plate 46, the position of the mounting plate 40 can be automatically adjusted according to the needs of the examinee, after an examination is completed, the examinee resets the mounting plate 40 and the backup plate 46, and therefore the mounting plate 40 can be automatically pulled out when the examinee is close to, and the examinee can conveniently sit on the backup plate.

Based on embodiment 1, as shown in fig. 3, 14 and 15, the monitoring device further includes a monitoring mechanism 9, the monitoring mechanism 9 includes a second pressure sensor 90, a fourth spring 91, a second speed reduction motor 92 and a camera 93, the second pressure sensor 90 is slidably disposed at a lower portion of the backup plate 46, the fourth spring 91 is connected between the second pressure sensor 90 and the backup plate 46, the second speed reduction motor 92 is disposed at a front side of an upper portion of the blocking plate 45, the camera 93 is disposed at an output shaft of the second speed reduction motor 92, and the camera 93 is rotatably connected with the blocking plate 45.

When using the device, after the examinee sits on the backup plate 46, second pressure sensor 90 is extruded and signals, control module receives signal back control second gear motor 92 and rotates the half-turn, second gear motor 92 rotates the half-turn and drives the upset of camera 93 and just to the examinee, then the staff opens camera 93 and monitors the examinee, the back is accomplished in the examination, the examinee rises up and breaks away from with second pressure sensor 90, second pressure sensor 90 signals, control module receives signal back control second gear motor 92 reversal half-turn, and then make camera 93 reversal reset, so, can monitor the examinee at the examination in-process, avoid the examinee to have the action of practising fraud.

On the basis of the embodiment 1, as shown in fig. 3, fig. 16 and fig. 17, the power supply device further includes a control box 20, the control box 20 is arranged on the upper portion of the rear side of the support plate 2, a switching power supply, a control module and a power module are arranged in the control box 20, the switching power supply supplies power to the whole device, the output end of the switching power supply is electrically connected with the power module, the power module is connected with a power main switch through a circuit, the control module is electrically connected with the power module, and the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first distance sensor 42, the first pressure sensor 55, the second distance sensor 81 and the second pressure sensor 90 are electrically connected with the control module, and the first electric push rod 44, the second electric push rod 50, the first speed reduction motor 82 and the second speed reduction motor 92 are connected with the control module through a peripheral circuit.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a desk of preventing practising fraud for college campus examination, characterized by, including: the bottom plate (1) is provided with a support plate (2) which is arranged on one side of the bottom plate (1); the placing plate (3) is arranged on the top of the supporting plate (2); the blocking mechanism (4) is installed between the bottom plate (1) and the placing plate (3), and the blocking mechanism (4) is used for blocking the sight of others; the lifting mechanism (5) is arranged between the blocking mechanism (4) and the placing plate (3);

the blocking mechanism (4) comprises: the mounting plate (40) is mounted on the bottom plate (1); a fixing plate (41) mounted at the bottom of the placing plate (3); a first distance sensor (42) mounted on one side of the fixed plate (41); the first electric push rod (44) is arranged on one side, close to the first distance sensor (42), of the supporting plate (2); the blocking plate (45) is installed at the extending end of the first electric push rod (44), and the blocking plate (45) is connected with the placing plate (3) in a sliding mode; a backup plate (46) which is arranged on the upper part of the mounting plate (40) in a sliding way;

the lifting mechanism (5) comprises: two second electric push rods (50) are arranged, and are respectively arranged at two sides of the lower part of the fixing plate (41); a lifting plate (51) mounted between the extended ends of the two second electric push rods (50); a hollow cylinder (52) mounted on one side of the barrier plate (45); a contact block (53) slidably mounted within the hollow cylinder (52); a first spring (54) installed between the contact block (53) and the hollow cylinder (52); the first pressure sensor (55) is arranged at one side of the bottom of the placing plate (3) close to the hollow cylinder (52), and the first pressure sensor (55) is matched with the contact block (53);

an examinee pulls a backup plate (46) to move forwards, so that a mounting plate (40) slides forwards on a bottom plate (1), when a first distance sensor (42) senses that the distance between the examinee and the backup plate (46) is larger than a preset value, the first distance sensor (42) sends a signal, a control module receives the signal and then controls the extension end of a first electric push rod (44) to extend for three seconds, the extension end of the first electric push rod (44) extends to drive a blocking plate (45) to slide upwards to block the periphery of a placing plate (3), then the examinee sits on the backup plate (46), an examination is performed on the placing plate (3), after the examination is completed, the examinee resets the backup plate (46) and the mounting plate (40), when the first distance sensor (42) senses that the distance between the examinee and the backup plate (46) is smaller than the preset value, the first distance sensor (42) sends a signal, and the control module receives the signal and then controls the extension end of the first electric push rod (44) to shorten for three seconds, so that the blocking plate (45) slides downwards to reset, and thus, vision of other examinees can be blocked;

the barrier plate (45) slides upwards to drive the contact block (53) to move upwards through the hollow cylinder (52), when the contact block (53) moves upwards to be in contact with the first pressure sensor (55), the first pressure sensor (55) is extruded to send a signal, the first pressure sensor (55) is extruded, the first spring (54) can buffer the extrusion force, the first pressure sensor (55) is prevented from being damaged, the control module controls the extension end of the second electric push rod (50) to extend for one second after receiving the signal, the extension end of the second electric push rod (50) extends to drive the lifting plate (51) to move upwards and is parallel to the placing plate (3), test paper is conveniently placed for examinee answering, after the barrier plate (45) slides downwards to enable the contact block (53) to be separated from the first pressure sensor (55), the first pressure sensor (55) sends a signal, the control module controls the extension end of the second electric push rod (50) to shorten for one second after receiving the signal, the extension end of the second electric push rod (50) contracts to drive the lifting plate (51) to move downwards, the test paper can be moved downwards to move to enter the examination paper when the examination field, the examination paper is prevented from being moved downwards, and the examination paper can be moved when the examination paper is moved downwards, and the examination field.

2. The anti-cheating desk for examination in high school campuses, as claimed in claim 1, further comprising a clamping mechanism (6), wherein the clamping mechanism (6) comprises: at least two bearing seats (60) are arranged on the top of the placing plate (3); the two clamping plates (61) are rotatably arranged between the two bearing seats (60) on the same side; and at least two first torsion springs (62) are arranged between the clamping plate (61) and the bearing seat (60).

3. The anti-cheating desk for the university campus examinations according to claim 2, further comprising an adjusting mechanism (7), wherein the adjusting mechanism (7) comprises: a first rack (70) installed at one side of the upper portion of the mounting plate (40); the first gear (71) is rotatably arranged on one side, close to the first rack (70), of the lower part of the backup plate (46), and the first gear (71) is meshed with the first rack (70); a rotating handle (72) which is slidably mounted on the first gear (71); at least two second springs (73), wherein the two second springs (73) are arranged between the backup plate (46) and the mounting plate (40); a guide plate (74) mounted on the other side of the upper part of the mounting plate (40); a positioning plate (75) slidably mounted on the guide plate (74); a third spring (76) mounted between the positioning plate (75) and the guide plate (74); the number of the rotating plates (77) is at least two, the rotating plates (77) are rotatably arranged on the positioning plate (75), and the rotating plates (77) are matched with the backup plate (46); the second torsion springs (78) are at least two, and the second torsion springs (78) are installed between the rotating plate (77) and the positioning plate (75).

4. The anti-cheating desk for the university campus examinations according to claim 3, further comprising a moving mechanism (8), wherein the moving mechanism (8) comprises: the protective shell (80) is arranged on the other side of the bottom plate (1); a second distance sensor (81) installed at one side of the protective case (80); a first reduction motor (82) installed in the protective case (80); a second gear (83) mounted on an output shaft of the first reduction motor (82); a second rack (84) arranged on the upper part of the mounting plate (40), wherein the second rack (84) is meshed with the second gear (83); the sliding rail (85) is installed on the bottom plate (1), and the sliding rail (85) is connected with the installation plate (40) in a sliding mode.

5. The anti-cheating desk for the university campus examinations according to claim 4, further comprising a monitoring mechanism (9), wherein the monitoring mechanism (9) comprises: the second pressure sensor (90) is arranged at the lower part of the backup plate (46) in a sliding way; a fourth spring (91) mounted between the second pressure sensor (90) and the backup plate (46); a second reduction motor (92) installed at one side of the upper part of the barrier plate (45); and the camera (93) is installed on an output shaft of the second speed reducing motor (92), and the camera (93) is rotatably connected with the barrier plate (45).

6. The anti-cheating desk for college campus examinations according to claim 5, characterized in that further comprising: the control box (20) is installed on one side, close to the first electric push rod (44), of the upper portion of the supporting plate (2), a switch power supply, a control module and a power module are arranged in the control box (20), the switch power supply supplies power to the whole device, the output end of the switch power supply is electrically connected with the power module, the power module is connected with a power main switch through a circuit, the control module is electrically connected with the power module, and the control module is connected with a DS1302 clock circuit and a 24C02 circuit; the first distance sensor (42), the first pressure sensor (55), the second distance sensor (81) and the second pressure sensor (90) are electrically connected with the control module, and the first electric push rod (44), the second electric push rod (50), the first speed reducing motor (82) and the second speed reducing motor (92) are connected with the control module through a peripheral circuit.