CN115813110A

CN115813110A - Desk capable of avoiding earthquake disasters in earthquake-prone areas

Info

Publication number: CN115813110A
Application number: CN202211716332.0A
Authority: CN
Inventors: 林中杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-03-21
Anticipated expiration: 2042-12-30
Also published as: CN115813110B

Abstract

The invention relates to a desk capable of avoiding earthquake disasters, in particular to a desk capable of avoiding earthquake disasters in earthquake-prone areas. The desk can protect students comprehensively and prevent the students from being damaged in earthquake-prone areas and can avoid earthquake disasters. The invention is realized by the following technical approaches: the utility model provides a desk that earthquake disaster can be dodged in many areas of earthquake, including desk, first protection frame, place the 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 table can be closed after the table plate rotates to be vertical, the left side and the right side of the table are protected by the first protection frame, the rear side of the table is protected by the opening and closing door, and therefore a user can well avoid injury in the table 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 earthquake-prone areas.

Background

Earthquake is also called earthquake and earth vibration, and is a natural phenomenon that earthquake waves are generated during the vibration caused in the process of quickly releasing energy from the earth crust, the safety of students is seriously threatened when the students go to school in an earthquake high-incidence area, and a desk is a good earthquake-proof object when the earthquake occurs.

Patent application No. CN201711199387.8 discloses a learning desk specially applied to earthquake high-rise areas, comprising: the desk comprises a desk body, a support body, a first shockproof assembly, a second shockproof assembly, a third shockproof assembly and a fourth shockproof assembly, wherein the support body is provided with a first support leg, a second support leg, a third support leg and a fourth support leg, one end of the first shockproof assembly is connected with the support 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 support 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 support body, the other end of the fourth shockproof assembly is connected with the desk body, when an earthquake occurs, a student can bend over to the bottom of the support body, when an object drops onto the desk body, due to the shockproof buffering effect of the first shockproof assembly, the second shockproof assembly, the third shockproof assembly and the fourth shockproof assembly, the impact force of the object on the desk for learning can be greatly reduced, the student is effectively protected, the probability of earthquake disaster accident is reduced, but the impact force of the desk is only reduced, the impact force of the student on the external environment, and the student can still fall from the side.

Therefore, a desk capable of protecting students comprehensively and avoiding earthquake disasters in earthquake-prone areas with damage in earthquakes needs to be designed.

Disclosure of Invention

In order to overcome the defects that the existing desk only reduces the impact force of objects on the desk, students still are exposed in the external environment, and the objects falling from the side still cause damage to the students, the desk capable of protecting the students comprehensively and preventing earthquake disasters from being avoided in earthquake-prone areas damaged in earthquakes is provided.

The invention is realized by the following technical approaches: the utility model provides a desk that earthquake disaster can be dodged in many areas of earthquake, including the desk, first protection frame, the screens piece, place frame and first linkage plate, the 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, symmetrical connection has first linkage plate around all between first protection frame upper portion and the desk, desk lower part rear side bilateral symmetry is equipped with the screens piece, still close up the mechanism, screens mechanism and the mechanism that opens and shuts, be equipped with on the desk and make the front side of desk become confined mechanism that folds, right desk front side lower part is equipped with the screens mechanism that can block mechanism inner part, it is equipped with the mechanism that opens and shuts that can make the rear side of desk become confined to fold the desk rear side.

Optionally, the folding mechanism comprises a first rotating shaft, a connecting frame, a bayonet lock, a first gear, a tension assembly, a table, a first fixing frame, a first sliding rail and a slider, the table front side middle part bilateral symmetry rotary type is provided with a first rotating shaft, the first rotating shaft inner side is provided with the connecting frame, the right side connecting frame front side middle part is provided with the bayonet lock, the first rotating shaft outer side is provided with the first gear, the connecting frame lower part and the table are connected with the tension assembly, the tension assembly is composed of a tension block and a tension spring, the tension block rotary type is connected to the connecting frame lower part, the tension spring is connected between the tension block and the table, the first fixing frame is arranged in the middle of the table upper part front side, the first fixing frame is provided with the first sliding rail in a rotary mode, the first sliding rail is provided with the first slider in a sliding mode, the slider top is provided with the table capable of enabling the table front side to become closed, and the connecting frame is connected with the table rotary type.

Optionally, the clamping mechanism comprises a second protection frame, a first clamping frame, a first spring, a second clamping frame, a first fixing shaft and a second fixing shaft, the lower right side of the front portion of the table is provided with the second protection frame, the lower left side of the second protection frame is provided with the first fixing shaft, the first fixing shaft is slidably provided with the first clamping frame, the first spring is connected between the first clamping frame and the first fixing shaft, the lower right side of the second protection frame is provided with the second fixing shaft, the second clamping frame which can be matched with the first clamping frame to clamp the clamping pin is slidably provided with the second fixing shaft, and the second spring is connected between the second clamping frame and the second fixing shaft.

Optionally, the opening and closing mechanism comprises an opening and closing door, a second fixing frame, a third fixing frame and a torsion spring, the third fixing frame is symmetrically arranged on the upper portion of the rear side of the table in the left-right direction, the second fixing frame is rotatably arranged on the third fixing frame, the torsion spring is symmetrically connected between the second fixing frame and the adjacent third fixing frame in the left-right direction, and the opening and closing door capable of enabling the rear side of the table to become closed is connected between the second fixing frames.

Optionally, still including the reinforcing mechanism that can make the object that the top dropped can't directly carry out the striking to the desk, reinforcing mechanism is including first rack, the second slide rail, slider and reinforcing frame, the equal front and back symmetry in desk left and right sides upper portion is equipped with the second slide rail, the equal slidingtype of second slide rail downside is equipped with the slider, all be connected with the reinforcing frame that can accept after the rebound between the slider of the left and right sides to the object that the top dropped, rear side slider rear side all is equipped with first rack, first rack all with adjacent first gear engagement.

Optionally, the table further comprises a positioning mechanism capable of clamping the reinforcing frame, the positioning mechanism comprises a positioning pin and a third spring, the lower portion of the reinforcing frame is symmetrically provided with the positioning pin in a front-back sliding mode, the third spring is connected between the positioning pin and the adjacent reinforcing frame, the upper portions of the left side and the right side of the table are symmetrically provided with clamping grooves in the front-back sliding mode, and the positioning pin moves upwards and then is matched with the clamping grooves.

Optionally, the anti-toppling mechanism is used for increasing the stability of the desk capable of avoiding earthquake disasters in the earthquake-prone area, and comprises a second connecting plate, a second rotating shaft, a supporting frame, a second gear, a second rack frame and a positioning frame.

Optionally, the reinforcement frame is a ferrous product.

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

2. Food can be placed in the placing frame, so that when an earthquake occurs, a user can have sufficient time to wait for rescue through the food in the placing 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 pounded 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 can contact with the ground after rotating, so that the contact area between the desk and the ground can be increased, the desk is more stable to place, and the risk of side turning is avoided.

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 third perspective view of the present invention.

Fig. 4 is a schematic diagram of a fourth three-dimensional structure according to the present invention.

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

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

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

Fig. 8 is a schematic view of a first three-dimensional structure of the locking mechanism of the present invention.

Fig. 9 is a schematic perspective view of a second locking mechanism of the present invention.

Fig. 10 is a schematic perspective view of the opening and closing mechanism of the present invention.

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

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

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

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

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

The meaning of the reference symbols in the figures: 1: table, 2: first guard frame, 21: a clamping block, 3: placing frame, 4: first connector tile, 5: closing mechanism, 51: first rotating shaft, 52: linking frame, 53: bayonet, 54: first gear, 55: tension assembly, 56: table, 57: first mount, 58: first slide rail, 59: slider, 6: detent mechanism, 61: second guard frame, 62: first cassette holder, 63: first spring, 64: second spring, 65: second card holder, 66: first fixed shaft, 67: second fixed shaft, 7: opening and closing mechanism, 71: opening and closing door, 72: second mount, 73: third mount, 74: torsion spring, 8: reinforcing mechanism, 81: first carrier, 82: second slide rail, 83: slider, 84: reinforcing frame, 9: positioning mechanism, 91: positioning pin, 92: third spring, 93: card slot, 10: anti-toppling mechanism, 101: second connector tile, 102: second rotating shaft, 103: a support frame, 104: second gear, 105: second rack, 106: a positioning frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the invention is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the invention.

Example 1

A desk capable of avoiding earthquake disasters in an earthquake-prone area is disclosed, and shown in figures 1-5, and comprises a desk 1, a first protection frame 2, a clamping block 21, a placing frame 3, a first connecting plate 4, a folding mechanism 5, a clamping mechanism 6 and an opening and closing mechanism 7, wherein the left side and the right side of the desk 1 are respectively provided with the first protection frame 2 in a welding mode, the first protection frame 2 can protect the left side and the right side of the desk 1, the placing frame 3 is arranged on the upper side of the desk 1 in a welding mode, articles can be placed on the placing frame 3, the first connecting plate 4 is connected between the upper portion of the first protection frame 2 and the desk 1 in a front-back symmetry mode, the clamping block 21 is arranged in a welding mode on the rear side of the lower portion of the desk 1 in a left-right symmetry mode, the folding mechanism 5 is arranged on the desk 1, the front side of the desk 1 can be closed through the folding mechanism 5, the clamping mechanism 6 is arranged on the lower portion of the right side of the desk 1, the clamping mechanism 5 can be closed, the opening and closing mechanism 5 is arranged on the rear side of the desk 1, the opening and closing mechanism 7, and the opening and closing mechanism 7 can enable the rear side of the desk 1 to be closed.

Referring to fig. 6 and 7, the folding mechanism 5 includes a first rotating shaft 51, a connecting frame 52, a bayonet pin 53, a first gear 54, a pulling force assembly 55, a table 56, a first fixing frame 57, a first sliding rail 58 and a slider 59, the first rotating shaft 51 is rotatably arranged in the middle of the front side of the table 1 in a bilateral symmetry manner, the connecting frame 52 is arranged on the inner side of the first rotating shaft 51 in a welding manner, the bayonet pin 53 is arranged in the middle of the front side of the connecting frame 52 in the right side in a welding manner, the first gear 54 is connected to the outer side of the first rotating shaft 51 in a key connection manner, the pulling force assembly 55 is connected between the lower portion of the connecting frame 52 and the table 1, the pulling force assembly 55 is composed of a pulling force block and a pulling force spring, the pulling force block is rotatably connected to the lower portion of the connecting frame 52, the pulling force spring is connected between the pulling force 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 in a rotating manner, the first fixing frame 57 is rotatably provided with the first sliding rail 58, the first sliding rail 59 is provided with the first slider 59, the table 56 is provided on the top of the table 59 in a welding manner, the table 56 in a welding manner, the front side of the table 1 can be sealed, and the connecting frame 52 is connected to the table.

Referring to fig. 8 and 9, the locking mechanism 6 includes a second protection frame 61, a first locking frame 62, a first spring 63, a second spring 64, a second locking frame 65, a first fixing shaft 66 and a second fixing shaft 67, the second protection frame 61 is arranged on the right lower side of the front portion of the table 1 in a welding manner, the first fixing shaft 66 is arranged on the left lower side of the second protection frame 61 in a welding manner, the first locking frame 62 is slidably arranged on the first fixing shaft 66, the first spring 63 is connected between the first locking frame 62 and the first fixing shaft 66, the second fixing shaft 67 is arranged on the right lower side of the second protection frame 61 in a welding manner, the second locking frame 65 is slidably arranged on the second fixing shaft 67, the second locking frame 65 can be matched with the first locking frame 62 to lock the locking pin 53, and the second spring 64 is connected between the second locking 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 frames 73 are 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 respectively and symmetrically connected between 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 can close the rear side of the table 1.

When the desk is needed to be used, a user can put books on the desk plate 56 for study, put foods and unused books in the placing frame 3, take the books out of the placing frame 3 when the desk is needed to be used, when an earthquake occurs, the user can squat below the placing frame 3 and be positioned in the desk 1, then push the connecting frame 52 to rotate towards the front side, the connecting frame 52 rotates to drive the first rotating shaft 51, the first gear 54 and the bayonet pin 53 to rotate, the connecting frame 52 rotates to drive the desk plate 56 to rotate, the desk plate 56 rotates to drive the first sliding rail 58 and the sliding device 59 to rotate on the first fixing frame 57, meanwhile, under the action of gravity, the desk plate 56 and the sliding device 59 can slide downwards on the first sliding rail 58, so that the front side of the desk 1 can be sealed through the desk plate 56, during the period, the tension component 55 is propped against the function of the pulling component 52, so that the connecting frame 52 can not easily rotate, the bayonet 53 rotates to contact with the first and

second bayonet brackets

62 and 65 and then moves continuously, so that the first bayonet bracket 62 moves leftwards, the first spring 63 is compressed, the second bayonet bracket 65 moves rightwards, the second spring 64 is compressed, when the bayonet 53 passes over the first and

second bayonet brackets

62 and 65, the first bayonet bracket 62 moves rightwards to reset under the action of the first spring 63, and the second bayonet bracket 65 moves leftwards to reset under the action of the second spring 64, so that the first and

second bayonet brackets

62 and 65 can clamp the bayonet 53, so that the right-side engaging bracket 52 can be clamped, so that the table 56 can be fixed, so that the left and right sides of the table 1 can be protected by the first protection frame 2, the front side of the table 1 is protected by the table 56, the rear side of the table 1 is protected by the opening and closing door 71, so that a user can hide in the table 1, the earthquake injury can be well avoided, a user can have enough time to wait for rescue by placing food in the frame 3, meanwhile, the connecting frame 52 is pulled all the time to prevent the connecting frame 52 from vibrating to prevent the front side of the table 1 from becoming closed, the clamping block 21 can clamp the opening and closing door 71 and cannot rotate forwards, when the user is shaken and can be rescued out, the user can select to go out from the front side or the rear side of the table 1 according to actual conditions, when going out from the rear side of the table 1, the opening and closing door 71 can be pushed upwards to drive the second fixing frame 72 to rotate, the torsion spring 74 deforms, when the user leaves from the lower part of the table 1, the opening and closing door 71 can be loosened, the opening and closing door 71 and the second fixing frame 72 rotate and reset under the action of the torsion spring 74, when the user goes out from the front side of the table 1, the engaging frame 52 can be pushed upwards to reset, the engaging frame 52 rotates upwards to drive the bayonet 53 to rotate, so that the first bayonet frame 62 moves leftwards again at the moment, the first spring 63 is compressed, the second bayonet frame 65 moves rightwards, the second spring 64 is compressed, when the bayonet 53 passes through the first bayonet frame 62 and the second bayonet frame 65, the first bayonet frame 62 moves rightwards to reset under the action of the first spring 63, the second bayonet frame 65 moves leftwards to reset under the action of the second spring 64, the engaging frame 52 rotates to reset and also drives the first gear 54 and the first rotating shaft 51 to rotate, the engaging frame 52 rotates and also drives the table plate 56, the first sliding rail 58 and the sliding block 59 to be in a flat-lying shape, and when a user leaves from the lower part of the table 1, the table plate 56 and the sliding block 59 can be pushed to move backwards to reset on the first sliding rail 58.

Example 2

In addition to embodiment 1, as shown in fig. 1, 12, and 13, the table further includes a reinforcing mechanism 8, the reinforcing mechanism 8 can prevent an object falling from above from directly striking the table 1, the reinforcing mechanism 8 includes a first rack 81, a second slide 82, a slider 83, and a reinforcing frame 84, the second slide 82 is symmetrically arranged on the upper portion of the left side and the upper portion of the right side of the table 1 in a front-back manner, the slider 83 is slidably arranged on the lower side of the second slide 82, the reinforcing frame 84 is connected between the front slider 83 and the rear slider 83 on the left side and the right side in a welding manner, the object falling from above can be received after the reinforcing frame 84 moves upward, the first rack 81 is arranged on the rear side of the rear slider 83 in a welding manner, and the first rack 81 is engaged with the 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, when an earthquake occurs, if an object falls off above the table 1, the object can be firstly hammered on the reinforcing frame 84, the reinforcing frame 84 is firstly stressed to prevent the object from being directly hammered on the table 1, the table 1 can be deformed or directly damaged, the protection performance of the desk can be further improved, the reinforcing frame 84 is made of iron products and has high hardness, the reinforcing frame 84 cannot be damaged too fast, when the first gear 54 rotates to reset, the first rack 81 can move downwards, 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 table further comprises a positioning mechanism 9, the positioning mechanism 9 can enable the reinforcing frame 84 to be clamped, the positioning mechanism 9 comprises a positioning pin 91 and a third spring 92, the lower portion of the reinforcing frame 84 is symmetrically provided with the positioning pin 91 in a front-back sliding manner, the third spring 92 is connected between the positioning pin 91 and the adjacent reinforcing frame 84, the upper portions of the left side and the right side of the table 1 are symmetrically provided with clamping grooves 93 in the front-back sliding manner, and the positioning pin 91 is matched with the clamping grooves 93 after moving upwards.

Initially, the third spring 92 is stretched, 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 under the action of the third spring 92 to be clamped into the clamping groove 93, at this time, the positioning pin 91 can be fixed, and the reinforcing frame 84 is fixed at the position, so that the reinforcing frame 84 can be prevented from moving downwards when being impacted, the first gear 54 rotates reversely, the table plate 56 can be prevented from rotating and resetting to prevent the front side of the table 1 from being closed, a user does not need to use a large force to pull the connecting frame 52, meanwhile, the force for falling objects can be borne by the table 1 and the reinforcing frame 84 at the same time, the reinforcing frame 84 can be further prevented from being damaged too fast, when the reinforcing frame 84 needs to move downwards, the positioning pin 91 is pulled outwards, the third spring 92 is stretched, and the reinforcing frame 84 can move downwards.

Referring to fig. 3 and 15, the earthquake disaster shelter desk further comprises an anti-toppling mechanism 10, the anti-toppling mechanism 10 can increase the stability of the desk capable of sheltering from earthquake disasters in a local earthquake prone area, 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 lower portion of the reinforcing frame 84 is symmetrically provided with the second connecting plate 101 in a front-back mode, the middle portions of the left side and the right side of the desk 1 are symmetrically provided with the positioning frame 106 in a front-back mode, the positioning frame 106 is provided with the second rack 105 in a sliding mode, the lower portions of the left side and the right side of the desk 1 are symmetrically provided with the second rotating shaft 102 in a front-back rotating mode, the inner sides of the second rotating shafts 102 are connected with the second gears 104 through keys, the second gears 104 are all meshed with the adjacent second rack 105, the supporting frame 103 is arranged on the outer sides of the second rotating shafts 102, and the supporting frame 103 is in contact with the ground after rotating, so that the supporting frame 103 can increase the stability of the desk capable of sheltering from earthquake disasters in the local earthquake disasters.

Reinforcing frame 84 upward movement drives second linkage plate 101 to contact with second rack 105 and then move continuously, alright make second rack 105 upward movement, second rack 105 upward movement drives second gear 104 and rotates, second gear 104 rotates and drives second pivot 102 and support frame 103 and rotate, support frame 103 rotates just can contact with ground, so can increase the area of contact on this desk and ground, make the more stable of placing of this desk, avoid having the risk of turning on one's side, when reinforcing frame 84 moves down, second rack 105 downward movement resets under the effect of gravity, thereby can make second gear 104, second pivot 102 and support frame 103 rotate and 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 gist of the present invention.

Claims

1. The utility model provides a desk that can avoid earthquake disaster in earthquake region, including desk (1), first protection frame (2), screens piece (21), place frame (3) and first linkage plate (4), the 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 protection frame (2) upper portion and desk (1) between all front and back symmetric connection have first linkage plate (4), desk (1) lower part rear side bilateral symmetry is equipped with screens piece (21), a serial communication port, still including closing mechanism (5), screens mechanism (6) and mechanism (7) that opens and shuts, be equipped with on desk (1) and to make the front side of desk (1) become confined screens mechanism (5), desk (1) right front side lower part is equipped with screens mechanism (6) that can fold mechanism (5) and block, desk (1) rear side is equipped with the mechanism (7) that can make the rear side of desk (1) become confined.

2. The desk for avoiding earthquake disasters in earthquake-prone areas according to claim 1, the folding mechanism (5) is characterized by comprising a first rotating shaft (51), a connecting frame (52), clamping pins (53), first gears (54), tension components (55), a table plate (56), a first fixing frame (57), first sliding rails (58) and sliders (59), wherein the first rotating shaft (51) is arranged in the middle of the front side of the table (1) in a bilateral symmetry rotating mode, the connecting frame (52) is arranged on the inner side of the first rotating shaft (51), the clamping pins (53) are arranged in the middle of the front side of the right connecting frame (52), the first gears (54) are arranged on the outer side of the first rotating shaft (51), the tension components (55) are connected between the lower portion of the connecting frame (52) and the table (1), each tension component (55) comprises a tension block and a tension spring, the tension block is rotatably connected to the lower portion of the connecting frame (52), the tension springs are connected between the tension blocks and the table (1), the first sliding rails (57) are arranged in the middle of the front side of the upper portion of the table (1), the first fixing frame (57) is provided with the first sliding rails (59), and the sliding rails (56) can be connected to the top of the table plate (1) in a rotating mode.

3. The desk capable of avoiding earthquake disasters in an earthquake-prone area according to claim 2, wherein 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 fixing shaft (66) and a second fixing shaft (67), the second protection frame (61) is arranged on the right lower side of the front portion of the desk (1), the first fixing shaft (66) is arranged on the left lower side of the second protection frame (61), the first clamping frame (62) is slidably arranged 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 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 slidably arranged on the second fixing shaft (67), and the second fixing shaft (64) is connected between the second clamping frame (65) and the second clamping frame (67).

4. The desk capable of avoiding earthquake disasters in areas with multiple earthquakes according to claim 3, wherein the opening and closing mechanism (7) comprises 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 symmetrically arranged on the left and right of the upper portion of the rear side of the desk (1), the second fixing frame (72) is rotatably arranged on the third fixing frame (73), the torsion springs (74) are symmetrically connected between the second fixing frame (72) and the adjacent third fixing frame (73) in the left-right direction, and the opening and closing door (71) capable of enabling the rear side of the desk (1) to be closed is connected between the second fixing frames (72).

5. The desk capable of avoiding earthquake disasters in an earthquake-prone area according to claim 4, further comprising a reinforcing mechanism (8) capable of preventing objects falling from above from directly impacting the desk (1), wherein the reinforcing mechanism (8) comprises a first rack (81), a second slide rail (82), a sliding block (83) and a reinforcing frame (84), the second slide rail (82) is symmetrically arranged on the upper portion of the left side and the upper portion of the right side of the desk (1) in a front-back mode, the sliding block (83) is arranged on the lower side of the second slide rail (82) in a sliding mode, the reinforcing frame (84) capable of bearing the objects falling from above after moving upwards is connected between the sliding blocks (83) on the left side and the right side, the first rack (81) is arranged on the rear side of the rear sliding block (83), and the first rack (81) is meshed with the adjacent first gear (54).

6. The desk capable of avoiding earthquake disasters in an earthquake-prone area according to claim 5, further comprising a positioning mechanism (9) capable of clamping the reinforcing frame (84), wherein the positioning mechanism (9) comprises a positioning pin (91) and a third spring (92), the positioning pins (91) are arranged on the lower portion of the reinforcing frame (84) in a front-back symmetrical sliding mode, the third spring (92) is connected between each positioning pin (91) and the adjacent reinforcing frame (84), clamping grooves (93) are symmetrically formed in the upper portions of the left side and the right side of the desk (1) in the front-back symmetrical mode, and the positioning pins (91) are matched with the clamping grooves (93) after moving upwards.

7. The desk capable of avoiding earthquake disasters in an earthquake-prone area according to claim 6, further comprising an anti-toppling mechanism (10) capable of improving the stability of the desk capable of avoiding earthquake disasters in the earthquake-prone area, 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 on the lower portion of the reinforcing frame (84) front and back, the positioning frames (106) are symmetrically arranged on the middle portions of the left side and the right side of the desk (1) front and back, the second rack (105) is arranged on the positioning frame (106) in a sliding manner, the second rotating shaft (102) is symmetrically arranged on the front and back of the lower portions of the left side and the right side of the desk (1), the second gear (104) is arranged on the inner side of the second rotating shaft (102), the second gear (104) is meshed with the adjacent second rack (105), and the desk (103) capable of improving the stability of avoiding earthquake disasters in the earthquake-prone area is arranged on the ground after the desk rotates and contacts with the ground.

8. A seismic hazard avoidance desk according to claim 7 wherein the reinforcing frame (84) is of ferrous material.