CN115813110B - Desk capable of avoiding earthquake disasters in earthquake-prone areas - Google Patents

Abstract

The invention relates to a desk capable of avoiding earthquake disasters, in particular to a desk capable of avoiding earthquake disasters in areas with frequent earthquakes. The desk can protect students in all aspects and avoid earthquake disasters in areas with frequent earthquakes, which are damaged in the earthquakes. The invention is realized by the following technical approaches: the utility model provides a desk that can avoid earthquake disaster in earthquake multiple areas, includes desk, first protection frame, places frame etc. the desk left and right sides all is equipped with the first protection frame that can protect the left and right sides of desk, and the desk upside is equipped with the frame of placing that can place article. The front side of the desk can be closed after the desk plate rotates to be vertical, the left side and the right side of the desk are protected by the first protection frame, and the back side of the desk is protected by the opening and closing door, so that a user can avoid injury in the desk when an earthquake happens.

Description

Desk capable of avoiding earthquake disasters in earthquake-prone areas

Technical Field

The invention relates to a desk capable of avoiding earthquake disasters, in particular to a desk capable of avoiding earthquake disasters in areas with frequent earthquakes.

Background

Earthquake is also called earthquake motion and ground vibration, is a natural phenomenon that earthquake waves are generated during the process of rapidly releasing energy from the crust, and is a very serious threat to the safety of students in class in high-rise areas of the earthquake, and a good shock-absorbing object is used as a desk in the earthquake.

Patent application number CN201711199387.8 discloses a study desk that is applied to earthquake high-rise area specially, includes: the desk comprises a desk body, a supporting body, a first shockproof assembly, a second shockproof assembly, a third shockproof assembly and a fourth shockproof assembly, wherein the supporting body is provided with a first supporting leg, a second supporting leg, a third supporting leg and a fourth supporting leg, one end of the first shockproof assembly is connected with the supporting body, the other end of the first shockproof assembly is connected with the desk body, one end of the second shockproof assembly is connected with the supporting body, the other end of the second shockproof assembly is connected with the desk body, one end of the third shockproof assembly is connected with the supporting body, the other end of the fourth shockproof assembly is connected with the desk body, a student can bend down at the bottom of the supporting body when an earthquake occurs, and when an object falls onto the desk body, the first shockproof assembly, the second shockproof assembly, the third shockproof assembly and the fourth shockproof assembly have the effect of buffering the desk, the impact force of the object on the study shockproof can be greatly reduced, the occurrence of earthquake disaster probability is reduced, the occurrence of the desk is reduced, the object is exposed to the side face of the student, and the student is injured by the impact force of the object, and the student is caused by the external impact force.

Therefore, a desk capable of protecting students in all aspects and avoiding earthquake disasters in areas with frequent earthquakes, which are damaged in the earthquakes, needs to be designed.

Disclosure of Invention

In order to overcome the defects that the prior desk only reduces the impact force of objects on the desk and students are still exposed in the external environment, so that the objects rolling off from the side surfaces can damage the students, the desk is capable of protecting the students in an all-around manner and preventing the students from being damaged in the earthquake-prone areas and avoiding earthquake disasters.

The invention is realized by the following technical approaches: the utility model provides a desk that can avoid earthquake disaster in multiple earthquake areas, including desk, first protection frame, screens piece, place frame and first joint board, desk left and right sides all is equipped with the first protection frame that can protect the left and right sides of desk, the desk upside is equipped with the frame of placing that can place article, all front and back symmetry is connected with first joint board between first protection frame upper portion and the desk, desk lower part rear side bilateral symmetry is equipped with the screens piece, still including folding mechanism, screens mechanism and mechanism that opens and shuts, be equipped with on the desk and make the front side of desk become confined and fold the mechanism, desk right front side lower part is equipped with the screens mechanism that can block and fold mechanism internal part, the desk rear side is equipped with and makes the rear side of desk become confined mechanism that opens and shuts.

Optionally, close the mechanism including first pivot, link up the frame, the bayonet lock, first gear, the pulling force subassembly, the table, first mount, first slide rail and slider, desk front side middle part bilateral symmetry rotation is equipped with first pivot, first pivot inboard all is equipped with the link up the frame, right side link up frame front side middle part and be equipped with the bayonet lock, first pivot outside all is equipped with first gear, be connected with the pulling force subassembly between link up frame lower part and the desk, the pulling force subassembly comprises pulling force piece and pulling force spring, pulling force piece swivelling joint is in link up frame lower part, pulling force spring connects between pulling force piece and desk, be equipped with first mount in the middle of the desk upper portion front side, the swivelling type is equipped with first slide rail on the first mount, the slider top is equipped with and can make desk front side become confined table, the link up frame all is connected with the table swivelling type.

Optionally, screens mechanism is including second protection frame, first screens frame, first spring, the second spring, second screens frame, first fixed axle and second fixed axle, desk front portion right side downside is equipped with the second protection frame, second protection frame left side downside is equipped with first fixed axle, it is equipped with first screens frame to slide on the first fixed axle, be connected with first spring between first screens frame and the first fixed axle, second protection frame right side downside is equipped with the second fixed axle, slide on the second fixed axle be equipped with the second screens frame that first screens frame cooperation can block the bayonet lock, be connected with the second spring between second screens frame and the second fixed axle.

Optionally, the mechanism that opens and shuts is including opening and shutting door, second mount, third mount and torsion spring, and desk rear side upper portion bilateral symmetry is equipped with the third mount, all rotates on the third mount and is equipped with the second mount, all bilateral symmetry is connected with torsion spring between second mount and the adjacent third mount, is connected with between the second mount and can make the desk rear side become confined door that opens and shuts.

Optionally, still including the strengthening mechanism that can make the object that the top dropped can't directly strike the desk, strengthening mechanism is equipped with the second slide rail including first rack, second slide rail, slider and reinforcement frame around the equal symmetry in desk left and right sides upper portion, second slide rail downside all is connected with the reinforcement frame that can accept the object that the top dropped after all being connected with between the slider of left and right sides after the upward movement, rear side slider rear side all is equipped with first rack, first rack all with adjacent first gear engagement.

Optionally, the positioning mechanism that can make the reinforcement frame blocked is still included, and positioning mechanism is equipped with the locating pin including locating pin and third spring, equal front and back symmetry slip in reinforcement frame lower part, all is connected with the third spring between locating pin and the adjacent reinforcement frame, and the equal front and back symmetry in desk left and right sides upper portion is opened there is the draw-in groove, and the locating pin is fit with the draw-in groove after upwards moving.

Optionally, the utility model discloses a high-speed earthquake disaster prevention device, the desk comprises a plurality of first connecting plates, the desk comprises a plurality of second connecting plates, the second pivot, the support frame, the second gear, second rack and locating rack, the equal front and back symmetry of reinforcing rack lower part is equipped with the second connecting plates, the equal front and back symmetry in desk left and right sides middle part is equipped with the locating rack, all sliding type is equipped with the second rack on the locating rack, the equal front and back symmetry rotation in desk left and right sides lower part is equipped with the second pivot, the second pivot inboard all is equipped with the second gear, the second gear all meshes with adjacent second rack, the second pivot outside all is equipped with the support frame that rotates the back and can increase the stability that can avoid the earthquake disaster in this earthquake disaster prevention device with ground contact.

Optionally, the reinforcement frame is a ferrous product.

Compared with the prior art, the invention has the remarkable advantages that: 1. the front side of the desk can be closed after the desk plate rotates to be vertical, the left side and the right side of the desk are protected by the first protection frame, and the back side of the desk is protected by the opening and closing door, so that a user can avoid injury in the desk when an earthquake happens.

2. Food can be placed in the placement frame, so that when an earthquake occurs, the user can have enough time to wait for rescue through the food in the placement frame.

3. The reinforcing frame can exceed the height of the desk after moving upwards, so that objects falling from the upper part can be prevented from being directly crashed on the desk, the desk can be deformed or directly damaged, and the protective performance of the desk can be further improved.

4. The locating rack rotates the back and can contact with ground, so can make this desk and the area of contact on ground increase, this desk is placed more stably, avoids having the risk of turning on one's side.

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 perspective view of a third embodiment of the present invention.

Fig. 4 is a schematic perspective view of a fourth embodiment of the present invention.

Fig. 5 is a schematic perspective view of a fifth embodiment of the present invention.

Fig. 6 is a schematic diagram of a first perspective structure of the folding mechanism of the present invention.

Fig. 7 is a schematic diagram of a second perspective structure of the folding mechanism of the present invention.

Fig. 8 is a schematic diagram of a first perspective structure of a detent mechanism according to the present invention.

Fig. 9 is a schematic diagram of a second perspective structure of the detent mechanism of the present invention.

Fig. 10 is a schematic view of two three-dimensional structures of the opening and closing mechanism of the present invention.

Fig. 11 is an enlarged perspective view of the present invention at a.

Fig. 12 is a schematic view of a first perspective structure of the reinforcement mechanism of the present invention.

Fig. 13 is a schematic view showing a second perspective structure of the reinforcement mechanism of the present invention.

Fig. 14 is a schematic perspective view of a positioning mechanism according to the present invention.

Fig. 15 is a schematic perspective view of an anti-toppling mechanism according to the present invention.

Meaning of reference numerals in the drawings: 1: table, 2: first protective frame, 21: clamping block, 3: placing a frame, 4: first connector plate, 5: folding mechanism, 51: first spindle, 52: engagement frame, 53: bayonet lock, 54: first gear, 55: tension assembly, 56: table, 57: first mount, 58: first slide rail, 59: slider, 6: clamping mechanism, 61: second protective frame, 62: first screens, 63: first spring, 64: second spring, 65: second screens, 66: first fixed axle, 67: second fixed axle, 7: opening and closing mechanism, 71: open-close door, 72: second mount, 73: third mount, 74: torsion spring, 8: reinforcing mechanism, 81: first rack, 82: second slide rail, 83: slider, 84: reinforcing frame, 9: positioning mechanism, 91: locating pin, 92: third spring, 93: clamping groove, 10: anti-toppling mechanism, 101: second connector board, 102: second rotation shaft, 103: support frame, 104: second gear, 105: second rack, 106: and a positioning frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present invention, are used only with reference to the drawings of the present invention, and are not meant to be limiting in any way.

Example 1

The utility model provides a desk that can avoid earthquake disaster, refer to fig. 1-5 and show, including desk 1, first protection frame 2, clamping piece 21, place the frame 3, first joint board 4, close mechanism 5, clamping mechanism 6 and mechanism 7 that opens and shuts, desk 1 both sides all are equipped with first protection frame 2 through the welded mode, first protection frame 2 can protect the left and right sides of desk 1, desk 1 upside is equipped with places the frame 3 through the welded mode, place the frame 3 and can place the article, all be connected with first joint board 4 through the welded mode between first protection frame 2 upper portion and the desk 1 bilateral symmetry, desk 1 lower part rear side bilateral symmetry is equipped with clamping piece 21 through the welded mode, be equipped with on the desk 1 and close mechanism 5, close mechanism 5 can make desk 1's front side become closed, desk 1 right front side lower part is equipped with clamping mechanism 6, clamping mechanism 6 can block the interior part of folding mechanism 5, desk 1 rear side is equipped with mechanism 7, mechanism 7 that opens and shuts can make desk 1's rear side become closed.

Referring to fig. 6 and 7, the folding mechanism 5 includes a first rotating shaft 51, a connecting frame 52, a bayonet lock 53, a first gear 54, a tension assembly 55, a table 56, a first fixing frame 57, a first sliding rail 58 and a slider 59, the middle part of the front side of the table 1 is rotationally provided with the first rotating shaft 51, the inner side of the first rotating shaft 51 is provided with the connecting frame 52 in a welding manner, the middle part of the front side of the right connecting frame 52 is provided with the bayonet lock 53 in a welding manner, the outer side of the first rotating shaft 51 is connected with the first gear 54 through a key, the tension assembly 55 is connected between the lower part of the connecting frame 52 and the table 1, the tension assembly 55 is composed of a tension block and a tension spring, the tension block is rotationally connected to the lower part of the connecting frame 52, the tension spring is connected between the tension block and the table 1, the middle part of the front side of the upper part of the table 1 is provided with the first fixing frame 57, the first sliding rail 58 is rotationally provided with the first sliding rail 58, the slider 59 is rotationally provided with the table 56 in a welding manner, and the table 56 is rotationally connected to the top of the table 52.

Referring to fig. 8 and 9, the clamping mechanism 6 includes a second protective frame 61, a first clamping frame 62, a first spring 63, a second spring 64, a second clamping frame 65, a first fixing shaft 66 and a second fixing shaft 67, the second protective frame 61 is disposed on the right lower side of the front portion of the table 1 in a welding manner, the first fixing shaft 66 is disposed on the left lower side of the second protective frame 61 in a welding manner, the first clamping frame 62 is slidably disposed on the first fixing shaft 66, the first spring 63 is connected between the first clamping frame 62 and the first fixing shaft 66, the second fixing shaft 67 is slidably disposed on the right lower side of the second protective frame 61 in a welding manner, the second clamping frame 65 is slidably disposed on the second fixing shaft 67, the clamping pin 53 can be clamped by cooperation of the second clamping frame 65 and the first clamping frame 62, and the second spring 64 is connected between the second clamping frame 65 and the second fixing shaft 67.

Referring to fig. 10 and 11, the opening and closing mechanism 7 includes an opening and closing door 71, a second fixing frame 72, a third fixing frame 73 and a torsion spring 74, the third fixing frame 73 is fixedly connected to the upper portion of the rear side of the table 1 through bolts in a bilateral symmetry manner, the second fixing frames 72 are rotatably arranged on the third fixing frames 73, the torsion springs 74 are symmetrically connected to the second fixing frames 72 and the adjacent third fixing frames 73 in a bilateral symmetry manner, the opening and closing door 71 is fixedly connected between the second fixing frames 72 through bolts, and the opening and closing door 71 enables the rear side of the table 1 to be closed.

When a desk is needed, a user can learn by placing books on the table plate 56, placing food and unused books in the placing frame 3, and taking out the books from the placing frame 3 when the desk is needed, when an earthquake happens, the user can squat under the placing frame 3 and is positioned in the desk 1, then the connecting frame 52 is pushed to rotate forwards, the connecting frame 52 rotates to drive the first rotating shaft 51, the first gear 54 and the clamping pin 53 to rotate, the connecting frame 52 rotates to drive the table plate 56 to rotate, the table plate 56 rotates to drive the first sliding rail 58 and the sliding device 59 to rotate on the first fixing frame 57, meanwhile, the table plate 56 and the sliding device 59 slide downwards on the first sliding rail 58 under the action of gravity, so that the front side of the desk 1 can be closed through the table plate 56, during the period, the tension component 55 plays a role of propping against the connecting frame 52, the connecting frame 52 cannot rotate easily, the bayonet lock 53 rotates to contact with the first bayonet lock 62 and the second bayonet lock 65 and then moves continuously, so that the first bayonet lock 62 moves leftwards, the first spring 63 is compressed, the second bayonet lock 65 moves rightwards, the second spring 64 is compressed, after the bayonet lock 53 passes over the first bayonet lock 62 and the second bayonet lock 65, the first bayonet lock 62 moves rightwards to reset under the action of the first spring 63, the second bayonet lock 65 moves leftwards to reset under the action of the second spring 64, the first bayonet lock 62 and the second bayonet lock 65 can clamp the bayonet lock 53, the right connecting frame 52 can be clamped, the table plate 56 can be fixed, the left side and the right side of the table 1 can be protected through the first protective frame 2, the front side of the table 1 is protected by the table plate 56, the rear side of the table 1 is protected by the opening and closing door 71, so that when a user is hidden in the table 1, the earthquake injury can be avoided well, food in the frame 3 can be placed to enable a user to have enough time to wait for rescue, meanwhile, the connecting frame 52 is pulled to prevent the connecting frame 52 from vibrating, the front side of the table 1 is not closed any more, the clamping block 21 can clamp the opening and closing door 71 and cannot rotate forwards, when the earthquake occurs, the user can choose to go out from the front side or the rear side of the table 1 according to actual conditions, when the earthquake occurs from the rear side of the table 1, the user can push the opening and closing door 71 upwards to drive the second fixing frame 72 to rotate, the torsion spring 74 deforms, the opening and closing door 71 and the second fixing frame 72 can be loosened under the action of the torsion spring 74, the connecting frame 52 can be pushed upwards to reset under the action of the torsion spring 74, the connecting frame 52 rotates upwards to drive the clamping pin 53 to rotate, so that the first clamping frame 62 moves leftwards again, the first spring 63 is compressed, the second clamping frame 65 is moved rightwards according to actual conditions, the second spring 64 is compressed, the first clamping frame 62 moves leftwards, the first sliding frame 58 is driven by the first rotating frame 58 and the first rotating frame 52 to move leftwards, the first sliding frame 59 is driven by the first rotating frame 58, the first sliding frame 58 is reset under the action of the reset plate 59, and the reset plate 59 is driven by the reset plate 59 to move leftwards, and the first sliding frame 58 is driven by the reset plate 59 to move the first sliding frame 58, and the first sliding frame 59 is driven by the first sliding frame 59, and the first sliding frame 59 is reset plate 59 is driven to move left, and the reset plate 58 is reset by the reset plate and the reset plate 58, and the reset plate is driven by the reset plate 58.

Example 2

On the basis of embodiment 1, refer to fig. 1, 12 and 13, still include strengthening mechanism 8, strengthening mechanism 8 can make the object that the top dropped can't directly strike desk 1, strengthening mechanism 8 is including first rack 81, second slide rail 82, slider 83 and reinforcement frame 84, the symmetry is equipped with second slide rail 82 through the welded mode all around the desk 1 left and right sides upper portion, second slide rail 82 downside all slip type is equipped with slider 83, all be connected with reinforcement frame 84 through the welded mode between two sliders 83 around the both sides, reinforcement frame 84 upwards moves the back and can accept the object that the top dropped, the rear side slider 83 rear side all is equipped with first rack 81 through the welded mode, first rack 81 all meshes with adjacent first gear 54.

The first gear 54 rotates to drive the first rack 81 to move upwards, the first rack 81 moves upwards to drive the sliding block 83 and the reinforcing frame 84 to move upwards, the reinforcing frame 84 moves upwards to cross the highest point of the table 1, so that when an earthquake occurs, for example, objects fall on the upper side of the table 1, the objects can be firstly crashed on the reinforcing frame 84, the reinforcing frame 84 is firstly stressed to prevent the objects from being crashed on the table 1, the table 1 can be deformed or damaged directly, the protective performance of the table can be further improved, the reinforcing frame 84 is made of iron, the reinforcing frame 84 is not damaged too fast, the first rack 81 moves downwards when the first gear 54 rotates to reset, and the first rack 81 moves downwards to drive the sliding block 83 and the reinforcing frame 84 to move downwards to reset.

Referring to fig. 3 and 14, the positioning mechanism 9 is further included, the positioning mechanism 9 can enable the reinforcement frame 84 to be clamped, the positioning mechanism 9 includes a positioning pin 91 and a third spring 92, the positioning pin 91 is symmetrically and slidably disposed at the lower portion of the reinforcement frame 84, the third spring 92 is respectively connected between the positioning pin 91 and the adjacent reinforcement frame 84, clamping grooves 93 are symmetrically formed at the upper portions of the left side and the right side of the table 1, and the positioning pin 91 is engaged with the clamping grooves 93 after moving upwards.

The third spring 92 is stretched initially, the reinforcing frame 84 moves upwards to drive the positioning pin 91 and the third spring 92 to move upwards, after the positioning pin 91 moves upwards to be matched with the clamping groove 93, the positioning pin 91 moves inwards to be clamped into the clamping groove 93 under the action of the third spring 92, the positioning pin 91 can be fixed at the moment, the reinforcing frame 84 is further fixed at the position, the situation that the first gear 54 is reversed due to downward movement when the reinforcing frame 84 is impacted can be avoided, the table plate 56 is prevented from rotating to reset, the front side of the table 1 is not closed any more, a user does not need to use a great force to pull the connecting frame 52, meanwhile, the force for objects to fall down is borne by the table 1 and the reinforcing frame 84 at the same time, the fact that the reinforcing frame 84 is damaged too fast is further avoided, when the reinforcing frame 84 is required to move downwards, the positioning pin 91 is pulled outwards, and the reinforcing frame 84 can move downwards.

Referring to fig. 3 and 15, the desk further comprises an anti-toppling mechanism 10, the anti-toppling mechanism 10 can increase stability of the desk capable of avoiding earthquake disasters in areas with multiple earthquake, the anti-toppling mechanism 10 comprises a second connecting plate 101, a second rotating shaft 102, a supporting frame 103, a second gear 104, a second rack 105 and a positioning frame 106, the second connecting plate 101 is symmetrically arranged at the lower part of the reinforcing frame 84 in a front-back mode, the positioning frames 106 are symmetrically arranged at the middle parts of the left side and the right side of the desk 1 in a front-back mode, the second rack 105 is slidably arranged on the positioning frames 106, the second rotating shafts 102 are symmetrically arranged at the lower parts of the left side and the right side of the desk 1 in a front-back mode, the second gears 104 are connected with the inner sides of the second rotating shafts 102 through keys, the second gears 104 are meshed with the adjacent second rack 105, the outer sides of the second rotating shafts 102 are respectively provided with the supporting frame 103, and the supporting frame 103 is contacted with the ground after rotating, so that stability of the desk capable of avoiding earthquake disasters in areas with multiple earthquake can be increased.

The reinforcing frame 84 moves upwards to drive the second connecting plate 101 to move continuously after contacting with the second rack 105, so that the second rack 105 moves upwards, the second rack 105 moves upwards to drive the second gear 104 to rotate, the second gear 104 rotates to drive the second rotating shaft 102 and the supporting frame 103 to rotate, the supporting frame 103 rotates to contact with the ground, the contact area between the desk and the ground can be increased, the desk is placed more stably, the risk of rollover is avoided, and when the reinforcing frame 84 moves downwards, the second rack 105 moves downwards under the action of gravity to reset, so that the second gear 104, the second rotating shaft 102 and the supporting frame 103 rotate to reset.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims (5)

1. The utility model provides a desk that can avoid earthquake disaster in earthquake multiple region, including desk (1), first protection frame (2), screens piece (21), place frame (3) and first joint board (4), desk (1) left and right sides all is equipped with first protection frame (2) that can protect the left and right sides of desk (1), desk (1) upside is equipped with places frame (3) that can place article, first joint board (4) are all connected with to front and back symmetry between first protection frame (2) upper portion and desk (1), desk (1) lower part rear side bilateral symmetry is equipped with screens piece (21), characterized by still including folding mechanism (5), screens mechanism (6) and opening and shutting mechanism (7), be equipped with on desk (1) and make the front side of desk (1) become closed fold mechanism (5), desk (1) right front side lower part is equipped with screens mechanism (6) that can block the part in folding mechanism (5), desk (1) rear side is equipped with and makes desk (1) rear side become closed;

the folding mechanism (5) comprises a first rotating shaft (51), a connecting frame (52), a bayonet lock (53), a first gear (54), a tension component (55), a table plate (56), a first fixing frame (57), a first sliding rail (58) and a slider (59), wherein the first rotating shaft (51) is symmetrically arranged in the middle of the front side of the table (1) in a rotating mode, the connecting frame (52) is arranged on the inner side of the first rotating shaft (51), the bayonet lock (53) is arranged in the middle of the front side of the right connecting frame (52), the first gear (54) is arranged on the outer side of the first rotating shaft (51), the tension component (55) is formed by a tension block and a tension spring, the tension block is rotatably connected to the lower portion of the connecting frame (52), the tension spring is connected between the tension block and the table (1), the first fixing frame (57) is arranged in the middle of the front side of the upper portion of the table (1), the first sliding rail (58) is rotatably arranged on the first fixing frame (57), the slider (59) is arranged on the front side of the first sliding rail (58), the lower portion of the connecting frame (52) is connected with the table (1), and the tension component (55) is connected with the table (56) in a rotating mode, and the table (56) can be sealed;

the clamping mechanism (6) comprises a second protection frame (61), a first clamping frame (62), a first spring (63), a second spring (64), a second clamping frame (65), a first fixed shaft (66) and a second fixed shaft (67), wherein the second protection frame (61) is arranged on the right lower side of the front part of the table (1), the first fixed shaft (66) is arranged on the left lower side of the second protection frame (61), the first clamping frame (62) is arranged on the first fixed shaft (66) in a sliding mode, the first spring (63) is connected between the first clamping frame (62) and the first fixed shaft (66), the second fixed shaft (67) is arranged on the right lower side of the second protection frame (61), the second clamping frame (65) which is matched with the first clamping frame (62) and can clamp the clamping pin (53) is arranged on the second fixed shaft (67), and the second spring (64) is connected between the second clamping frame (65) and the second fixed shaft (67);

the opening and closing mechanism (7) comprises an opening and closing door (71), a second fixing frame (72), a third fixing frame (73) and torsion springs (74), wherein the third fixing frame (73) is symmetrically arranged on the upper portion of the rear side of the table (1) in a bilateral symmetry mode, the second fixing frames (72) are rotatably arranged on the third fixing frames (73), the torsion springs (74) are symmetrically connected between the second fixing frames (72) and the adjacent third fixing frames (73), and the opening and closing door (71) capable of enabling the rear side of the table (1) to be closed is connected between the second fixing frames (72).

2. The desk capable of avoiding earthquake disasters in multiple earthquake regions according to claim 1, further comprising a reinforcing mechanism (8) capable of enabling objects falling from the upper side to impact the desk (1) directly, wherein the reinforcing mechanism (8) comprises a first rack (81), a second slide rail (82), slide blocks (83) and reinforcing frames (84), the second slide rails (82) are symmetrically arranged on the upper portions of the left side and the right side of the desk (1) in a front-back mode, the slide blocks (83) are arranged on the lower sides of the second slide rails (82) in a sliding mode, the reinforcing frames (84) capable of supporting the objects falling from the upper side after upward movement are connected between the slide blocks (83) on the left side and the right side, the first rack (81) are arranged on the rear side of the rear slide blocks (83), and the first rack (81) are meshed with the adjacent first gears (54).

3. The desk capable of avoiding earthquake disasters in the earthquake-prone region according to claim 2, further comprising a positioning mechanism (9) capable of enabling the reinforcing frame (84) to be clamped, wherein the positioning mechanism (9) comprises positioning pins (91) and third springs (92), the positioning pins (91) are symmetrically arranged at the lower parts of the reinforcing frames (84) in a sliding mode, the third springs (92) are respectively connected between the positioning pins (91) and the adjacent reinforcing frames (84), clamping grooves (93) are symmetrically formed in the upper parts of the left side and the right side of the desk (1), and the positioning pins (91) are matched with the clamping grooves (93) after moving upwards.

4. The desk capable of avoiding earthquake disasters in the earthquake-prone region according to claim 3, further comprising an anti-toppling mechanism (10) capable of increasing stability of the desk capable of avoiding earthquake disasters in the earthquake-prone region, wherein the anti-toppling mechanism (10) comprises a second connecting plate (101), a second rotating shaft (102), a supporting frame (103), a second gear (104), a second rack (105) and a positioning frame (106), the second connecting plate (101) is symmetrically arranged at the lower part of the reinforcing frame (84), the positioning frames (106) are symmetrically arranged at the middle parts of the left side and the right side of the desk (1), the second rack (105) is slidably arranged on the positioning frame (106), the second rotating shafts (102) are symmetrically arranged at the lower parts of the left side and the right side of the desk (1), the second gears (104) are respectively arranged at the inner sides of the second rotating shafts (102), and the second gears (104) are respectively meshed with the adjacent second racks (105), and the supporting frames (103) capable of increasing stability of the desk capable of avoiding earthquake disasters in the earthquake-prone region after rotating and contacting the ground are respectively arranged at the outer sides of the second rotating shafts (102).

5. A desk for use in areas with frequent earthquakes as in claim 2 wherein the reinforcing frame (84) is ferrous.