阅读说明：本技术 一种大型活动演讲用便于移动讲桌 (Large-scale activity speech is with being convenient for remove lectern ) 是由 危茜 于 2021-09-03 设计创作，主要内容包括：本发明涉及一种讲桌,尤其涉及一种大型活动演讲用便于移动讲桌。本发明提供一种能够控制讲桌移动,具有一定稳定性,能够针对不同高度的演讲者进行高度调节的大型活动演讲用便于移动讲桌。一种大型活动演讲用便于移动讲桌,包括：底座,其内顶部滑动式设有滑动框；支撑架,滑动框顶部两侧均设有支撑架；转轴,两个支撑架上部之间转动式设有转轴。有益效果：演讲者通过向下脚踩第一踏板,使得摩擦块向下侧移动与轮子接触,摩擦块持续压住轮子,使轮子停止移动,避免演讲时本装置随意移动,具有一定的稳定性,通过向下脚踩第二踏板,使得摩擦块向上侧移动与轮子不再接触,使轮子可移动,便于轻松移动讲桌。(The invention relates to a teacher's desk, in particular to a conveniently-moved teacher's desk for large-scale movable lectures. The invention provides a large-scale movable lecture table which can control the movement of a lecture table, has certain stability and can adjust the height of lecturers with different heights, and is convenient to move. A large-scale activity speech is with being convenient for remove lectern includes: the inner top of the base is provided with a sliding frame in a sliding way; the two sides of the top of the sliding frame are provided with the supporting frames; the rotating shaft is arranged between the upper parts of the two supporting frames in a rotating mode. Has the advantages that: the lecturer steps on first footboard through the foot downwards for the clutch blocks moves to the downside and contacts with the wheel, and the clutch blocks lasts to push down the wheel, makes the wheel stop to remove, and this device removes at will when avoiding the lecture, has certain stability, steps on the second footboard through the foot downwards, makes the clutch blocks move to the upside and no longer contacts with the wheel, makes the wheel portable, is convenient for easily remove the lectern.)

1. The utility model provides a large-scale activity speech is with being convenient for remove lectern which characterized in that: the method comprises the following steps:

the inner top of the base (1) is provided with a sliding frame (2) in a sliding way;

the two sides of the top of the sliding frame (2) are provided with the supporting frames (3);

the rotating shafts (41) are rotatably arranged between the upper parts of the two support frames (3);

the first connecting plate (4) is arranged on the rotating shaft (41);

the supporting block (5) is arranged on one side of the top of the sliding frame (2);

a microphone (6), wherein a microphone (6) for increasing the volume during speech is arranged at one side in the first connecting plate (4);

two wheels (7) capable of driving the desk to move are rotatably arranged on two sides of the top of the base (1);

a control mechanism (8), wherein one side in the base (1) is provided with the control mechanism (8) capable of controlling the movement of the wheels (7);

the other side in the base (1) is provided with a lifting mechanism (9) capable of adjusting the height of the first connecting plate (4);

the adjusting mechanism (10) is arranged on the sliding frame (2), the adjusting mechanism (10) capable of adjusting the angle of the first connecting plate (4) is arranged on the sliding frame, and the adjusting mechanism (10) is matched with the first connecting plate (4).

2. The portable lectern for large-scale movable lectures according to claim 1, wherein: the control mechanism (8) includes:

the first fixing rods (81) are arranged on two sides inside the base (1);

the first pedal (82) is arranged on a first fixing rod (81) on one side in a sliding mode, and the first pedal (82) is in sliding fit with the base (1);

the first spring (85) is connected between the first pedal (82) and the base (1);

a second pedal (86) is arranged at the lower part of the first fixing rod (81) at the other side in a sliding manner, and the second pedal (86) is in sliding fit with the base (1);

the first spring (85) is connected between the second pedal (86) and the base (1);

the connecting frame (83) is arranged at the bottom of the first pedal (82);

the friction blocks (84) capable of controlling the wheels (7) to move are arranged on the two sides of the connecting frame (83), and the friction blocks (84) are in sliding fit with the wheels (7);

a wedge-shaped rod (87), wherein the wedge-shaped rod (87) is arranged on one side of the top of the second pedal (86);

a second fixing rod (88), wherein the side of the base (1) close to the second pedal (86) is provided with the second fixing rod (88);

the second fixing rod (88) is provided with a wedge block (89) in a sliding mode, and the first pedal (82) is matched with the wedge block (89) in a sliding mode;

a second spring (811), wherein the second spring (811) is connected between the wedge block (89) and the base (1);

the wedge-shaped block (89) is provided with a first connecting rod (810), one side of the wedge-shaped block (89) is provided with the first connecting rod (810), and the first connecting rod (810) is in sliding fit with the wedge-shaped rod (87).

3. The portable lectern for large-scale event lectures according to claim 2, wherein: the lifting mechanism (9) comprises:

a rotating rod (91), wherein the rotating rod (91) is rotatably arranged at one side of the base (1) close to the second pedal (86);

the upper part in the base (1) is rotatably provided with a screw rod (92);

bevel gears (93) are arranged on the lower end of the screw rod (92) and the rotating rod (91), the two bevel gears (93) are meshed with each other, and the screw rod (92) is in threaded fit with the sliding frame (2).

4. A portable lectern for large-scale event lectures according to claim 3 wherein: the adjustment mechanism (10) comprises:

the ratchet wheel (101) is arranged on each of two sides of the rotating shaft (41);

the first connecting blocks (102) are arranged on two sides of the top of the sliding frame (2);

the second connecting block (103) is arranged on one side, close to the first connecting block (102), of the top of the sliding frame (2);

the sliding rod (104) is arranged between the first connecting block (102) and the second connecting block (103) in a sliding manner;

the two sides of the upper part of the sliding rod (104) are respectively provided with a first fixing block (105), and the first fixing blocks (105) are in sliding fit with the ratchet wheel (101);

and two third springs (106) are connected between the first fixing block (105) and the first connecting block (102).

5. The portable lectern for large-scale movable lectures according to claim 4, wherein: still including show mechanism (11), show mechanism (11) includes:

the fixing plates (111) are arranged on two sides of the upper part of the sliding frame (2);

the tops of the two fixing plates (111) are respectively and rotatably provided with a third connecting block (112), and the third connecting blocks (112) are connected and matched with the first connecting plate (4);

the outer sides of the upper parts of the two fixing plates (111) are respectively provided with a second connecting plate (113);

the first sliding plates (114) are arranged on the two second connecting plates (113) in a sliding manner;

a fourth spring (118), two fourth springs (118) being connected between the first sliding plate (114) and the second connecting plate (113);

the outer sides of the upper parts of the two fixing plates (111) are respectively provided with a second fixing block (115), and the second fixing blocks (115) are positioned below the second connecting plate (113);

two sliding blocks (116) are arranged in the two second fixing blocks (115) in a sliding manner, and the sliding blocks (116) are in sliding fit with the first sliding plate (114);

the second connecting rod (117) is connected between the bottoms of the two sliding blocks (116) on the same side;

and four fifth springs (119) are connected between the second connecting rod (117) and the second fixed block (115).

6. The portable lectern for large-scale event lectures according to claim 5, wherein: still include moving mechanism (12), moving mechanism (12) includes:

the third fixing rods (121) are arranged on two sides of the front part of the sliding frame (2);

the second sliding plate (122) is arranged between the upper parts of the two third fixing rods (121) in a sliding manner, and the second sliding plate (122) is in sliding fit with the sliding frame (2);

and two sixth springs (123) are connected between the second sliding plate (122) and the third fixing rod (121).

7. The portable lectern for large-scale movable lectures according to claim 6, wherein: still including drive mechanism (13), drive mechanism (13) includes:

the two sides of the lower parts of the outer sides of the two fixing plates (111) are respectively provided with a third fixing block (131);

the first idler wheel (132) is rotatably arranged between the two third fixed blocks (131) on the same side;

the lower part of one side of the supporting block (5) is rotatably provided with a transmission shaft (133);

the full gear (136) is arranged on one side of the transmission shaft (133);

the top of the second sliding plate (122) is provided with a fourth connecting rod (137);

the rack (138) is arranged on the rear side of the fourth connecting rod (137), and the rack (138) is meshed with the full gear (136);

a second roller (134), wherein one side of the transmission shaft (133) is provided with the second roller (134);

the rope (135), two ropes (135) are connected to the second idler wheel (134) in a winding mode, the other ends of the two ropes (135) are connected with the two second connecting rods (117) respectively, and the rope (135) on the same side is connected to the first idler wheel (132) on the same side in a winding mode respectively.

8. The portable lectern for large-scale event lectures according to claim 7, wherein: still include clamping mechanism (14), clamping mechanism (14) includes:

two fourth connecting blocks (141) are arranged on the two inner sides of the first connecting plate (4);

the rotating plate (142) is rotatably arranged among the four fourth connecting blocks (141);

and four seventh springs (143) are connected between the rotating plate (142) and the fourth connecting block (141).

Technical Field

The invention relates to a teacher's desk, in particular to a conveniently-moved teacher's desk for large-scale movable lectures.

Background

Along with the development of society, more and more lecturers perform lectures in crowd gathering, the vocal language is used as a main means, the posture language is used as an auxiliary means, own insights and advices are published aiming at a certain section of specific problems, the affairs or the emotions are clarified, the lectures are a language communication activity for propaganda and encouragement, most lectures are generally used in the communication activity, and the lectures are main articles indispensable to the lecturers.

Therefore, a large-sized movable lecture table capable of controlling the lecture table to move, having a certain stability, and being capable of adjusting the height of lecturers with different heights is needed.

Disclosure of Invention

In order to overcome present lectern structure too simple, the height-adjusting of being not convenient for has certain limitation, and carries the shortcoming that the lectern need consume more manpower, and the technical problem is: the utility model provides a can control the lectern and remove, have certain stability, can carry out the large-scale activity speech of height control with being convenient for removal lectern to the lecturer of co-altitude not.

The technical scheme is as follows: a large-scale activity speech is with being convenient for remove lectern includes:

the inner top of the base is provided with a sliding frame in a sliding way;

the two sides of the top of the sliding frame are provided with the supporting frames;

the rotating shaft is rotatably arranged between the upper parts of the two support frames;

the rotating shaft is provided with a first connecting plate;

the supporting block is arranged on one side of the top of the sliding frame;

the microphone is arranged on one side in the first connecting plate and used for increasing the volume during speech;

two wheels capable of driving the desk to move are rotatably arranged on two sides of the top of the base;

one side in the base is provided with a control mechanism capable of controlling the movement of the wheels;

the other side in the base is provided with a lifting mechanism capable of adjusting the height of the first connecting plate;

the adjusting mechanism is arranged on the sliding frame and can adjust the angle of the first connecting plate, and the adjusting mechanism is matched with the first connecting plate.

As a further preferable mode, the control mechanism includes:

the first fixing rods are arranged on two sides inside the base;

the first pedal is arranged on the first fixing rod on one side in a sliding mode and is matched with the base in a sliding mode;

the first spring is connected between the first pedal and the base;

a second pedal is arranged on the lower portion of the first fixing rod on the other side in a sliding mode, and the second pedal is in sliding fit with the base;

the first spring is connected between the second pedal and the base;

the connecting frame is arranged at the bottom of the first pedal;

the friction blocks capable of controlling the wheels to move are arranged on the two sides of the connecting frame and are in sliding fit with the wheels;

the wedge-shaped rod is arranged on one side of the top of the second pedal;

the base is provided with a second fixed rod at one side close to the second pedal;

the second fixing rod is provided with a wedge block in a sliding manner, and the first pedal is in sliding fit with the wedge block;

the second spring is connected between the wedge-shaped block and the base;

and one side of the wedge-shaped block is provided with a first connecting rod which is in sliding fit with the wedge-shaped rod.

As a further preferable mode, the ascending mechanism includes:

a rotating rod is rotatably arranged on one side, close to the second pedal, in the base;

the upper part in the base is rotatably provided with a screw rod;

bevel gears are arranged on the lower ends of the screw rods and the rotating rod, the two bevel gears are meshed, and the screw rods are in threaded fit with the sliding frames.

As a further preferable aspect, the adjusting mechanism includes:

ratchet gears are arranged on two sides of the rotating shaft;

the first connecting blocks are arranged on two sides of the top of the sliding frame;

the second connecting block is arranged on one side, close to the first connecting block, of the top of the sliding frame;

the sliding rod is arranged between the first connecting block and the second connecting block in a sliding manner;

the two sides of the upper part of the sliding rod are respectively provided with a first fixed block, and the first fixed blocks are in sliding fit with the ratchet wheel;

and two third springs are connected between the first fixing block and the first connecting block.

As a further preferable scheme, the display device further comprises a display mechanism, wherein the display mechanism comprises:

the fixing plates are arranged on two sides of the upper part of the sliding frame;

the tops of the two fixing plates are respectively and rotatably provided with a third connecting block, and the third connecting blocks are connected and matched with the first connecting plate;

the outer sides of the upper parts of the two fixing plates are respectively provided with a second connecting plate;

the first sliding plates are arranged on the two second connecting plates in a sliding manner;

two fourth springs are connected between the first sliding plate and the second connecting plate;

the outer sides of the upper parts of the two fixing plates are respectively provided with a second fixing block, and the second fixing blocks are positioned below the second connecting plate;

two sliding blocks are arranged in the two second fixing blocks in a sliding manner and are in sliding fit with the first sliding block;

the second connecting rod is connected between the bottoms of the two sliding blocks on the same side;

and four fifth springs are connected between the second connecting rod and the second fixed block.

As a further preferable mode, the device further comprises a moving mechanism, and the moving mechanism comprises:

the two sides of the front part of the sliding frame are provided with third fixed rods;

a second sliding plate is arranged between the upper parts of the two third fixing rods in a sliding manner and is in sliding fit with the sliding frame;

and two sixth springs are connected between the second sliding plate and the third fixing rod.

As a further preferable scheme, the device further comprises a transmission mechanism, and the transmission mechanism comprises:

the two sides of the lower parts of the outer sides of the two fixing plates are respectively provided with a third fixing block;

the first roller is rotatably arranged between the two third fixed blocks on the same side;

the lower part of one side of the supporting block is rotatably provided with a transmission shaft;

one side of the transmission shaft is provided with a full gear;

the top of the second sliding plate is provided with a fourth connecting rod;

the rack is arranged on the rear side of the fourth connecting rod and meshed with the full gear;

one side of the transmission shaft is provided with a second roller;

the rope, the wire-wound has two ropes on the second gyro wheel, and two rope other ends are connected with two second connecting rods respectively, and homonymy rope is wire-wound respectively and is connected on homonymy first gyro wheel.

As a further preferable aspect, the present invention further comprises a clamping mechanism, wherein the clamping mechanism comprises:

two fourth connecting blocks are arranged on the two inner sides of the first connecting plate;

the rotating plate is rotatably arranged among the four fourth connecting blocks;

and four seventh springs are connected between the rotating plate and the fourth connecting block.

The invention has the beneficial effects that: 1. the lecturer steps on the first pedal by a downward foot to enable the friction block to move downwards to be in contact with the wheel, the friction block continuously presses the wheel to enable the wheel to stop moving, the device is prevented from moving randomly during lecture, certain stability is achieved, the friction block moves upwards to be not in contact with the wheel any more by stepping on the second pedal by the downward foot, the wheel can move, and the lecture table can be moved easily;

2. the rotary rod is rotated by the lecturer to drive the bevel gear to rotate, the lead screw is driven by the bevel gear to rotate, the sliding frame is rotated by the lead screw to move upwards, the sliding frame drives the supporting frame and the first connecting plate to move upwards, finally, the height of the lecture platform can be adjusted, and the lecturers with different heights can use the lecturer conveniently;

3. the lecturer pulls the second sliding plate to move downwards along the third fixing rod, the second sliding plate moves downwards and cannot block the sliding frame, the lecturer places the teaching articles in the sliding frame, and finally the teaching articles can be stored, so that the lecturer can conveniently take the teaching articles when needing to use the teaching articles;

4. when the lecturer stores the teaching articles in the sliding frame, the sliding block moves downwards to be separated from the contact with the first sliding plate, the first sliding plate moves outwards under the reset action of the fourth spring, the lecturer places the lecture articles to be used on the first sliding plate, and finally the first sliding plate can be driven to move out automatically, so that the lecture articles can be placed on the first sliding plate conveniently;

5. the rotor plate can press from both sides tightly the lecture manuscript on the first connecting plate, prevents that the lecture manuscript from being blown up by wind-force influence.

Drawings

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

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic perspective view of a part of the control mechanism of the present invention.

Fig. 4 is a first partial cross-sectional view of the control mechanism of the present invention.

Fig. 5 is a second partial cross-sectional view of the control mechanism of the present invention.

FIG. 6 is a third partial cross-sectional view of the control mechanism of the present invention.

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

Fig. 8 is a partial sectional view of the raising mechanism of the present invention.

Fig. 9 is a schematic view of a first partial body structure of the adjusting mechanism of the present invention.

Fig. 10 is a schematic view of a second partial body structure of the adjusting mechanism of the present invention.

Fig. 11 is a perspective view of a portion of the display mechanism of the present invention.

Fig. 12 is a partial cross-sectional view of the display 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 view of a first partially separated body structure of the transmission mechanism of the present invention.

Fig. 15 is a schematic view of a second partial structure of the transmission mechanism of the present invention.

Fig. 16 is a perspective view of the clamping mechanism of the present invention.

Description of reference numerals: 1-base, 2-sliding frame, 3-supporting frame, 4-first connecting plate, 41-rotating shaft, 5-supporting block, 6-microphone, 7-wheel, 8-control mechanism, 81-first fixing rod, 82-first pedal, 83-connecting frame, 84-friction block, 85-first spring, 86-second pedal, 87-wedge rod, 88-second fixing rod, 89-wedge block, 810-first connecting rod, 811-second spring, 9-lifting mechanism, 91-rotating rod, 92-lead screw, 93-bevel gear, 10-adjusting mechanism, 101-ratchet gear, 102-first connecting block, 103-second connecting block, 104-sliding rod, 105-first fixing block, 106-third spring, 11-a display mechanism, 111-a fixed plate, 112-a third connecting block, 113-a second connecting plate, 114-a first sliding plate, 115-a second fixed block, 116-a sliding block, 117-a second connecting rod, 118-a fourth spring, 119-a fifth spring, 12-a moving mechanism, 121-a third fixed rod, 122-a second sliding plate, 123-a sixth spring, 13-a transmission mechanism, 131-a third fixed block, 132-a first roller, 133-a transmission shaft, 134-a second roller, 135-a rope, 136-a full gear, 137-a fourth connecting rod, 138-a rack, 14-a clamping mechanism, 141-a fourth connecting block, 142-a rotating plate, 143-a seventh spring.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.

Example 1

A conveniently moving rostrum for large-scale movable lecture, as shown in figure 1-figure 10, comprises a base 1, a sliding frame 2, a support frame 3, a first connecting plate 4, a rotating shaft 41, a support block 5, a microphone 6, wheels 7, a control mechanism 8, a lifting mechanism 9 and an adjusting mechanism 10, wherein the sliding frame 2 is arranged at the top of the base 1 in a sliding way, a groove is arranged at the front side of the sliding frame 2 for placing teaching articles, the support frame 3 is arranged at the left side and the right side of the top of the sliding frame 2, the rotating shaft 41 is arranged between the upper parts of the two support frames 3 in a rotating way, the first connecting plate 4 is arranged on the rotating shaft 41, the support block 5 is arranged at the rear side of the top of the sliding frame 2, the microphone 6 is arranged at the left side of the rear side in the first connecting plate 4, the two wheels 7 are arranged at the left side and the right side of the top of the base 1 in a rotating way, the control mechanism 8 is arranged at the front side in the base 1, the lifting mechanism 9 is arranged at the right side in the base 1, the sliding frame 2 is provided with the adjusting mechanism 10, the adjustment mechanism 10 cooperates with the first connection plate 4.

When a lecture seat which is convenient for moving a large-scale movable lecture needs to be used, firstly, a lecturer pushes a base 1 to move on the ground through wheels 7, the wheels 7 can drive the device to move on the ground, after the lecturer moves to a position needing to be used, the lecturer stops pushing the base 1, then the lecturer presses a control mechanism 8, the control mechanism 8 moves towards the lower side, the control mechanism 8 can limit the wheels 7, then the lecturer rotates an ascending mechanism 9, the ascending mechanism 9 drives a sliding frame 2 to move towards the upper side, the sliding frame 2 drives a supporting frame 3 and a first connecting plate 4 to move towards the upper side, the lecturer can adjust the height of the first connecting plate 4 according to the height which the lecturer needs to use, when the angle of the first connecting plate 4 needs to be adjusted, the lecturer pulls an adjusting mechanism 10 to move towards the front side, the adjusting mechanism 10 can not clamp the first connecting plate 4, and the lecturer can rotate the first connecting plate 4 to adjust the angle, after adjusting to suitable angle, the lecturer just pushes away adjustment mechanism 10 to the rear side, and adjustment mechanism 10 carries out the chucking to first connecting plate 4, and the lecturer opens microphone 6 thereupon and alright give a speech, so just can realize removing the lectern, and height-adjusting's effect, and the lecturer just closes microphone 6 after the speech process is accomplished.

The control mechanism 8 comprises a first fixing rod 81, a first pedal 82, a connecting frame 83, a friction block 84, a first spring 85, a second pedal 86, a wedge-shaped rod 87, a second fixing rod 88, a wedge-shaped block 89, a first connecting rod 810 and a second spring 811, wherein the first fixing rod 81 is arranged on the left side and the right side inside the base 1, the first pedal 82 is arranged on the first fixing rod 81 on the left side in a sliding mode, the first pedal 82 is in sliding fit with the base 1, the first spring 85 is connected between the first pedal 82 and the base 1, the second pedal 86 is arranged on the lower portion of the first fixing rod 81 on the right side in a sliding mode, the second pedal 86 is in sliding fit with the base 1, the first spring 85 is connected between the second pedal 86 and the base 1, the connecting frame 83 is arranged at the bottom of the first pedal 82, the friction block 84 is arranged on the left side and the right side of the connecting frame 83, the friction block 84 is in sliding fit with the wheel 7, the wedge-shaped rod 87 is arranged on the left side behind the top of the second pedal 86, base 1 right side is equipped with second dead lever 88, and second dead lever 88 is gone up the gliding style and is equipped with wedge 89, first footboard 82 and wedge 89 sliding fit, is connected with second spring 811 between wedge 89 and the base 1, and wedge 89 rear side is equipped with head rod 810, head rod 810 and wedge 87 sliding fit.

When a speaker moves the device to a position to be used, the speaker presses the first pedal 82 to move downwards, the left first spring 85 is stretched, the first pedal 82 moves downwards to be in contact with the wedge block 89, the wedge block 89 moves towards the right, the second spring 811 is compressed, meanwhile, the first pedal 82 drives the connecting frame 83 to move downwards, the connecting frame 83 drives the friction block 84 to move downwards, the friction block 84 moves downwards to be in contact with the wheel 7, the friction block 84 slightly rubs the wheel 7 to stop moving the wheel 7, and then the first pedal 82 moves downwards to be not in contact with the wedge block 89, under the reset action of the second spring 811, the wedge block 89 moves towards the left to be in contact with the first pedal 82, so that the wedge block 89 limits the first pedal 82, the friction block 84 continuously presses the wheel 7, and the device is prevented from moving randomly during speech, after the lecturer finishes the lecture procedure, the lecturer needs to retract the lecture table, the lecturer can press the second pedal 86 to move towards the lower side, the second pedal 86 drives the wedge-shaped rod 87 to move towards the lower side, the right first spring 85 is stretched, the wedge-shaped rod 87 moves towards the lower side to be contacted with the first connecting rod 810 and drive the first connecting rod 810 to move towards the right side, the first connecting rod 810 drives the wedge-shaped block 89 to move towards the right side, the second spring 811 is compressed, the wedge-shaped block 89 can not limit the position of the second pedal 86, under the reset action of the left first spring 85, the first pedal 82 moves towards the upper side to reset, the first pedal 82 drives the connecting frame 83 and the friction block 84 to move towards the upper side, the friction block 84 is not contacted with the wheel 7, so that the wheel 7 can not be limited, the lecturer pushes the base 1 to move on the ground through the wheel 7, the lecture table is moved along with the lecturer, and then the lecturer can not apply force to the second pedal 86 any more, under the reset action of the right first spring 85, the second pedal 86 moves to reset to the upper side, the second pedal 86 drives the wedge-shaped rod 87 to move to reset to the upper side, meanwhile, the wedge-shaped rod 87 cannot be in contact with the first connecting rod 810, under the reset action of the second spring 811, the wedge-shaped block 89 moves to reset to the left side, and finally, the purpose of controlling the movement of the wheel 7 and having certain stability can be achieved.

The ascending mechanism 9 comprises a rotating rod 91, a screw rod 92 and bevel gears 93, the rotating rod 91 is rotatably arranged on the right side in the base 1, the screw rod 92 is rotatably arranged on the upper portion in the base 1, the bevel gears 93 are respectively arranged on the lower end of the screw rod 92 and the rotating rod 91, the two bevel gears 93 are meshed with each other, and the screw rod 92 is in threaded fit with the sliding frame 2.

When the height of the lecture table needs to be adjusted, the lecturer rotates the rotating rod 91 to drive the bevel gear 93 to rotate, the bevel gear 93 drives the screw rod 92 to rotate, the screw rod 92 rotates to enable the sliding frame 2 to move upwards, the sliding frame 2 drives the supporting frame 3 and the first connecting plate 4 to move upwards, the sliding frame 2 drives all the components on the sliding frame to move upwards, after the first connecting plate 4 is adjusted to the height needed to be used, the lecturer stops rotating the rotating rod 91, the sliding frame 2 stops moving, after the lecture procedure of the lecturer is completed, the lecture platform needs to be lowered and retracted, the lecturer reversely rotates the rotating rod 91, the rotating rod 91 drives the bevel gear 93 to reversely rotate, the bevel gear 93 drives the screw rod 92 to reversely rotate, make sliding frame 2 to the downside remove, sliding frame 2 drives support frame 3 and first connecting plate 4 to the downside and removes, can realize finally carrying out height-adjusting to the podium, and the lecturer of the co-altitude of being convenient for uses.

Adjusting mechanism 10 is including ratchet 101, first connecting block 102, second connecting block 103, slide bar 104, first fixed block 105 and third spring 106, the pivot 41 left and right sides all is equipped with ratchet 101, the left and right sides of slide frame 2 top front side all is equipped with first connecting block 102, slide frame 2 top front side is equipped with second connecting block 103, the slidingtype is equipped with slide bar 104 between first connecting block 102 and the second connecting block 103, the left and right sides of slide bar 104 upper portion rear side all is equipped with first fixed block 105, first fixed block 105 and ratchet 101 sliding fit, be connected with two third springs 106 between first fixed block 105 and the first connecting block 102.

When the angle of the lecture table needs to be adjusted, a lecturer can firstly pull the sliding rod 104 to move towards the front side, the sliding rod 104 drives the first fixing block 105 to move towards the front side, the third spring 106 is compressed, the first fixing block 105 moves towards the front side until the first fixing block 105 is no longer in contact with the ratchet gear 101, then the lecturer can rotate the first connecting plate 4 to adjust to a proper angle, after the adjustment is completed, the lecturer does not apply force to the sliding rod 104 any more, under the reset action of the third spring 106, the sliding rod 104 drives the first fixing block 105 to move towards the rear side, the first fixing block 105 is in contact with the ratchet gear 101, and therefore the lecturer can be clamped with the ratchet gear 101, therefore, the lecturer cannot rotate the first connecting plate 4, finally, the angle of the lecture table can be adjusted, and the lecturer can use conveniently.

Example 2

On the basis of embodiment 1, as shown in fig. 1, 11, 12, 13, 14, 15 and 16, the display device 11 further includes a display mechanism 11, the display mechanism 11 includes a fixed plate 111, a third connecting block 112, a second connecting plate 113, a first sliding plate 114, a second fixed block 115, a sliding block 116, a second connecting rod 117, a fourth spring 118 and a fifth spring 119, the fixed plate 111 is disposed on both sides of the upper portion of the sliding frame 2, the third connecting block 112 is rotatably disposed on the top of the two fixed plates 111, the third connecting block 112 is connected and matched with the first connecting plate 4, the second connecting plate 113 is disposed on the outer side of the upper portion of the two fixed plates 111, the first sliding plate 114 is slidably disposed on the two second connecting plates 113, the two fourth springs 118 are connected between the first sliding plate 114 and the second connecting plate 113, the second fixed block 115 is disposed on the outer side of the upper portion of the two fixed plates 111, the second fixed block 115 is located below the second connecting plate 113, two sliding blocks 116 are arranged in the two second fixing blocks 115 in a sliding mode, the sliding blocks 116 are in sliding fit with the first sliding plate 114, a plurality of through holes matched with the sliding blocks 116 are formed in the bottom of the first sliding plate 114, a second connecting rod 117 is connected between the bottoms of the two sliding blocks 116 on the same side, and four fifth springs 119 are connected between the second connecting rod 117 and the second fixing blocks 115.

When a speaker is in a speech, the speech articles need to be displayed for people to watch, the speaker can pull the second connecting rod 117 to move downwards, the second connecting rod 117 drives the sliding block 116 to move downwards, the fifth spring 119 is stretched, the sliding block 116 does not contact with the first sliding plate 114 when moving downwards, the fourth spring 118 is in a stretched state in an initial state, the first sliding plates 114 on two sides move outwards under the reset action of the fourth spring 118, the speaker can place the articles needing to be spoken on the first sliding plate 114, the speaker can take the speech articles on the first sliding plate 114 during the speech, after the speech process of the speaker is completed, the speaker can take the speech articles on the first sliding plate 114 firstly, then push the first sliding plates 114 on two sides inwards, the fourth spring 118 is stretched, and then the speaker does not apply force to the second connecting rod 117 any more, under the reset action of fifth spring 119, second connecting rod 117 drives sliding block 116 and moves to the upshifting, and sliding block 116 moves to the upshifting and cooperates with first sliding plate 114 opening chucking, can realize finally that the lecturer when carrying out the speech, deposits the article of required speech, and the lecturer of being convenient for takes.

The sliding frame is characterized by further comprising a moving mechanism 12, wherein the moving mechanism 12 comprises a third fixing rod 121, a second sliding plate 122 and sixth springs 123, the third fixing rod 121 is arranged on the left side and the right side of the front portion of the sliding frame 2, the second sliding plate 122 is arranged between the upper portions of the rear sides of the two third fixing rods 121 in a sliding mode, the second sliding plate 122 is in sliding fit with the sliding frame 2, and the two sixth springs 123 are connected between the second sliding plate 122 and the third fixing rods 121.

When needing to deposit the teaching articles for use, first the lecturer pulls second sliding plate 122 and moves to the downside along third dead lever 121, sixth spring 123 is compressed, second sliding plate 122 moves downwards and can not block slide frame 2, the lecturer just places the teaching articles for use in slide frame 2, place the back that the work was accomplished, the lecturer just no longer exerts force to second sliding plate 122, under the reset action of sixth spring 123, second sliding plate 122 moves to the upside and resets, second sliding plate 122 moves to the upside and blocks the groove on slide frame 2, can realize depositing the teaching articles for use finally, when making the lecturer need use, the purpose of conveniently taking.

Also comprises a transmission mechanism 13, the transmission mechanism 13 comprises a third fixed block 131, a first roller 132, a transmission shaft 133 and a second roller 134, rope 135, full gear 136, fourth connecting rod 137 and rack 138, the front and back both sides of two fixed plate 111 outside lower parts all are equipped with third fixed block 131, equal rotary type is equipped with first gyro wheel 132 between two third fixed blocks 131 of homonymy, 5 front side lower part rotary types of supporting shoe are equipped with transmission shaft 133, transmission shaft 133 front side is equipped with full gear 136, second sliding plate 122 top left side is equipped with fourth connecting rod 137, fourth connecting rod 137 rear side is equipped with rack 138, rack 138 meshes with full gear 136 mutually, transmission shaft 133 front side is equipped with second gyro wheel 134, the wraparound has two rope 135 on the second gyro wheel 134, two rope 135 other ends are connected with two second connecting rod 117 respectively, homonymy rope 135 wraparound respectively on homonymy first gyro wheel 132.

When the lecture article needs to be placed, the lecturer pulls the second sliding plate 122 to move downwards to drive the fourth connecting rod 137 to move downwards, the fourth connecting rod 137 drives the rack 138 to move downwards, the rack 138 moves downwards to drive the full gear 136 to rotate, the full gear 136 drives the transmission shaft 133 to rotate, the transmission shaft 133 drives the second roller 134 to rotate, the second roller 134 rotates to tighten the rope 135, the rope 135 tightens to drive the second connecting rods 117 at two sides to move downwards, the fifth spring 119 is stretched, the second connecting rods 117 drive the sliding blocks 116 to move downwards, the sliding blocks 116 move downwards to be separated from contact with the first sliding plate 114, under the resetting action of the fourth spring 118, the first sliding plate 114 moves outwards, the lecturer places the lecture article needed to be used on the first sliding plate 114, and after the lecturer completes the lecture procedure, the first sliding plates 114 at two sides are pulled inwards, the fourth spring 118 is stretched, when the second sliding plate 122 moves upwards, the second sliding plate 122 drives the fourth connecting rod 137 to move upwards, the fourth connecting rod 137 drives the rack 138 to move upwards, the rack 138 moves upwards to drive the full gear 136 to rotate in the opposite direction, the full gear 136 drives the transmission shaft 133 to rotate in the opposite direction, the transmission shaft 133 drives the second roller 134 to rotate in the opposite direction, the second roller 134 rotates in the opposite direction to loosen the rope 135, the second connecting rod 117 moves upwards under the reset action of the fifth spring 119, the second connecting rod 117 drives the rope 135 to move upwards, and finally the first sliding plate 114 can be driven to move out automatically, so that people can store and speak articles conveniently.

The clamping mechanism 14 comprises fourth connecting blocks 141, a rotating plate 142 and seventh springs 143, two fourth connecting blocks 141 are arranged on the left side and the right side of the inner front side of the first connecting plate 4, the rotating plate 142 is rotatably arranged between the four fourth connecting blocks 141, and the four seventh springs 143 are connected between the rotating plate 142 and the fourth connecting blocks 141.

When the lecturer is in the lecture, the lecturer needs to bring the lecture manuscript to perform the lecture, people can rotate the rotating plate 142 earlier, the seventh spring 143 deforms, the rotating plate 142 can not contact with the first connecting plate 4, then the lecturer can place the lecture manuscript on the first connecting plate 4, after the placement work is completed, people just can not exert force on the rotating plate 142 any more, under the reset action of the seventh spring 143, the rotating plate 142 rotates reversely and resets, the rotating plate 142 just clamps the lecture manuscript on the first connecting plate 4 tightly, finally, the lecture manuscript can be clamped tightly, and the lecture manuscript is prevented from being blown up due to the influence of wind power.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made herein without departing from the principles and spirit of the invention as defined by the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the remainder of the disclosure, but rather to limit the scope of the disclosure to the full extent set forth in the appended claims.