CN211356380U - Folding guardrail - Google Patents

Abstract

The utility model discloses a folding guardrail relates to medical instrument's technical field, and its technical scheme main points are: the utility model provides a folding guardrail, includes that the bisymmetry sets up pillar and a plurality of setting guardrail between two pillars, the pillar sets up and rotates the first pillar and the second pillar of connection from top to bottom including, the spout that is linked together is seted up to first pillar and second pillar, the guardrail includes from the last main guardrail and a plurality of time guardrails that down set gradually, the both ends of main guardrail and a plurality of time guardrail are all slided through being provided with the slider and are connected in the spout, and are a plurality of be provided with link gear between the guardrail, second pillar one end is kept away from to first pillar with be provided with block mechanism between the main guardrail. The utility model discloses a folding guardrail so that medical personnel and patient's use.

Description

Folding guardrail

Technical Field

The utility model belongs to the technical field of medical instrument's technique and specifically relates to a folding guardrail is related to.

Background

Clinically, for some special patients, a hospital bed with guardrails is needed to be used for nursing, and the patients are prevented from falling off the hospital bed. And current sick bed is mostly fixed guardrail, though has better protection effect, nevertheless when medical personnel prick the operation such as infusion, measurement sign to patient, because the guardrail has certain height, seriously influences going on of nursing operation, brings great inconvenience for medical personnel, and also be inconvenient for medical personnel to support patient and get off the bed.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a folding guardrail to medical personnel and patient's use is convenient for.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a folding guardrail, includes that the bisymmetry sets up pillar and a plurality of setting guardrail between two pillars, the pillar sets up and rotates the first pillar and the second pillar of connection from top to bottom including, the spout that is linked together is seted up to first pillar and second pillar, the guardrail includes from the last main guardrail and a plurality of time guardrails that down set gradually, the both ends of main guardrail and a plurality of time guardrail are all slided through being provided with the slider and are connected in the spout, and are a plurality of be provided with link gear between the guardrail, second pillar one end is kept away from to first pillar with be provided with block mechanism between the main guardrail.

By adopting the technical scheme, the folding guardrail is used for nursing bed side edges, when in normal protection use, the first support column rotates to be in the same straight line with the second support column, the main guardrail is pulled upwards, so that the main guardrail can slide upwards along the sliding grooves of the second support column and the first support column through the sliding blocks, meanwhile, due to the linkage mechanism arranged between the guardrails, a plurality of secondary guardrails also move upwards along with the main guardrail, finally, the main guardrail is clamped and fixed at one end, far away from the second support column, of the first support column through the clamping mechanism, and the distances between the adjacent secondary guardrails and the main guardrail and between the secondary guardrails are safe distances; when patient need get off the bed, block mechanism between unblock first pillar and the main guardrail to a plurality of time guardrails that connect main guardrail and through the link gear slide to the second pillar within range downwards, then rotate the inboard respectively with the first pillar of two symmetries and fold, thereby do not hinder patient and get on or off the bed, and need not to demolish, comparatively convenient when nursing patient, work efficiency is higher, and the practicality is high.

The utility model discloses further set up to: the number of the secondary guardrails is two, and the sliding blocks comprise a first sliding block, a second sliding block and a third sliding block which are sequentially arranged from top to bottom; the linkage mechanism comprises a first U-shaped connecting piece, a first clamping block, a second clamping block and a second U-shaped connecting piece, wherein the opening of the first U-shaped connecting piece is fixed on one side wall surface of the sliding block; the lengths of the first U-shaped connecting piece and the second U-shaped connecting piece are respectively equal to the distance between the main guardrail and the secondary guardrail above the main guardrail in the normal state of the folding guardrail and the distance between the two secondary guardrails.

By adopting the technical scheme, the first sliding block moves along with the up-and-down movement of the main guardrail, the second sliding block and the third sliding block move along with the up-and-down movement of the two secondary guardrails respectively, when the main guardrail is pulled to move upwards, the first sliding block moves upwards in the sliding groove, at the moment, the first U-shaped connecting piece fixed on one side wall surface of the sliding block at the opening moves upwards along with the first sliding block, and when the first sliding block moves to the preset height, the first U-shaped connecting piece hooks the first clamping block on the second sliding block, so that the second sliding block and the secondary guardrails; when slider two rebound to predetermined height, the second U-shaped connecting piece that the opening part was fixed in slider three curb wall faces then can catch on the fixture block two on the slider two to drive slider three and connect the inferior guardrail rebound on slider three, realize between main guardrail and the adjacent inferior guardrail, linkage between inferior guardrail and the adjacent inferior guardrail, only need stimulate main guardrail and can drive whole main guardrails and the upward slip of inferior guardrail, it is more convenient and simple structure to operate.

The utility model discloses further set up to: the clamping mechanism comprises a clamping groove arranged at the bottom of the sliding groove at one end of the first strut, which is far away from the second strut, a clamping hook which is rotatably connected to the first sliding block and matched with the clamping groove, and an unlocking device acting on the clamping hook, the clamping hook penetrates through the first sliding block and is provided with a spring, one end of the spring is fixed at the upper end of the clamping hook, and the other end of the spring is fixed at one side of the first sliding block, which; when the clamping hook is in a normal state, the clamping part at the lower end of the clamping hook abuts against the bottom of the sliding groove, and the clamping hook is clamped into the clamping groove by the acting force of the spring when sliding to the clamping groove.

By adopting the technical scheme, when the main guardrail drives the sliding block to move upwards, the clamping part at the lower end of the clamping hook continuously abuts against the bottom surface of the sliding groove due to the elastic force of the spring, and the clamping part at the lower end of the clamping hook tends to move towards the bottom surface of the sliding groove; when and only when the first sliding block slides to the first pillar and keeps away from one end of the second pillar, and the clamping portion at the lower end of the clamping hook slides to the clamping groove, the clamping portion of the clamping hook stretches into and is clamped in the clamping groove due to the elastic force of the spring, so that clamping is carried out, the main guardrail and the first sliding block are fixed at one end of the first pillar and far away from one end of the second pillar, and the folding guardrail is in a protection state.

The utility model discloses further set up to: the unlocking device comprises an unlocking box fixed in the main guardrail, a push rod connected in a sliding manner along the length direction of the main guardrail and extending into the unlocking box, a transmission block connected in the unlocking box in a rotating manner along the sliding direction of the push rod, and an unlocking button arranged in the unlocking box, wherein the unlocking button is provided with a pressure spring, one end of the pressure spring acts on the bottom of the unlocking button, and the other end of the pressure spring acts on the bottom of the unlocking box; when the unlocking button is pressed down, the unlocking button pushes the movable end of the transmission block towards the end part of the push rod, so that the push rod acts on the upper end of the clamping hook.

By adopting the technical scheme, when the folding guardrail needs to be folded, the clamping part of the clamping hook needs to be rotated out of the clamping groove through the unlocking device, so that the main guardrail and the first sliding block slide downwards along the sliding groove; during the unblock, press the release button, in-process when the release button is pushing down, the expansion end that will promote the transmission piece rotates towards the direction of push rod tip, thereby promote the push rod, make the push rod remove to the pothook direction, finally, act on the upper end of pothook, because pothook central point is connected on slider one for rotating, then the upper end of pothook receives the effort of push rod and takes place to rotate this moment, inside in order to roll out the draw-in groove with the joint portion of pothook lower extreme, in order to reach the unblock effect, make the unblock operation more convenient, user's of being convenient for use.

The utility model discloses further set up to: the bottom of the unlocking button is vertically connected with a guide rod in a sliding mode, and the pressure spring penetrates through the guide rod.

Through adopting above-mentioned technical scheme to guarantee that the unblock button can be straight-up straight down push down and kick-back, prevent that the unblock button from taking place crooked and can't make the driving block act on the push rod at the in-process that pushes down, perhaps prevent that the unblock button from blocking when kick-backing.

The utility model discloses further set up to: first pillar rotating end is fixed with rotates the adapter sleeve, it rotates to rotate the adapter sleeve and keeps away from first pillar end and connects in the second pillar, the transversal U-shaped of personally submitting of rotation adapter sleeve, and the opening is towards the direction of rotation of first pillar, it is tangent with the top of second pillar to rotate the planar rotation pitch arc in adapter sleeve bottom.

Through adopting above-mentioned technical scheme, when first pillar rotate to with the second pillar collinear (be in when unfolded promptly), the bottom of the rotation adapter sleeve of transversal personally submitting U-shaped then can the butt at the dorsal part (the dorsal part of first pillar rotation direction) of first pillar and second pillar rotation node to prevent that first pillar from taking place to rock for the second pillar, guarantee the holistic stability of folding guardrail.

The utility model discloses further set up to: an anti-shaking plate is arranged at the opening of the rotary connecting sleeve, and the vertical distance between the bottom end of the anti-shaking plate and the rotating point of the rotary connecting sleeve is greater than the vertical distance between the rotating point of the rotary connecting sleeve and the outer wall surface of the second strut in the direction of the opening of the rotary connecting sleeve.

Through adopting above-mentioned technical scheme for when first pillar rotates to the collinear (be in when unfolded promptly) with the second pillar, the anti-shake board that the opening part of the rotation connecting sleeve that transversal personally submits the U-shaped set up also can the butt rotate the front (first pillar rotation direction side) of node at first pillar and second pillar, increased folding guardrail holistic stability more, also improved the security equally.

The utility model discloses further set up to: and an anti-shaking mechanism is arranged between the first support column and the second support column.

Through adopting above-mentioned technical scheme to further improve between first pillar and the second pillar and the holistic stability of folding guardrail.

The utility model discloses further set up to: the anti-shaking mechanism comprises an anti-shaking rod fixed in the second support column on one side of the third sliding block far away from the secondary guardrail and a hollow butt joint column fixed in the end, close to the second support column, of the first support column, wherein the anti-shaking rod moves up and down along with the third sliding block and is inserted into the hollow butt joint column when sliding upwards along with the third sliding block.

Through adopting above-mentioned technical scheme, take slider one and the in-process of being pulled up and fixing as folding guardrail along with main guardrail, slider two also risees thereupon with slider three, thereby prevent shaking the pole along with slider three upwards removes, the top that first pillar and the bottom of second pillar are passed to the upper end of finally preventing shaking the pole, and insert in the hollow butt joint post, prevent this moment shaking the pole upper end and insert in the hollow butt joint post of inserting first pillar, the lower extreme is fixed on the slider three in the second pillar, thereby increase the steadiness to first pillar and second pillar, further guarantee folding guardrail's stability and security.

The utility model discloses further set up to: and a stabilizing block is fixed at the lower end of the anti-shaking rod and is abutted against the third sliding block.

Through adopting above-mentioned technical scheme, guarantee to prevent shaking the steadiness of pole in the second pillar.

To sum up, the utility model discloses a beneficial technological effect does:

1. when a patient needs to get off the bed, the clamping mechanism between the first support column and the main guardrail is unlocked so that the main guardrail and a plurality of secondary guardrails connected through the linkage mechanism can slide downwards to the range of the second support column, and then the two symmetrical first support columns are respectively rotated inwards to be folded, so that the patient can not be hindered from getting on or off the bed, the patient does not need to be dismantled, the patient nursing bed is convenient to nurse, the working efficiency is high, and the practicability is high;

2. the rotary connecting sleeve is arranged to prevent the first support column from shaking relative to the second support column, so that the overall stability of the folding guardrail is ensured;

3. be provided with between first pillar and second pillar and prevent shaking the mechanism to further improve between first pillar and the second pillar and the holistic stability of folding guardrail.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a first schematic structural view of a linkage mechanism;

FIG. 3 is a second schematic structural view of the linkage mechanism;

FIG. 4 is a schematic structural view of the engaging mechanism;

FIG. 5 is a schematic view of the unlocking device;

fig. 6 is a cross-sectional view of the first and second struts, showing primarily the anti-sway bar and the hollow abutment post.

In the figure, 1, a pillar; 101. a first support; 102. a second support; 2. a guardrail; 201. a main guardrail; 202. a secondary guardrail; 3. a chute; 4. a slider; 401. a first sliding block; 402. a second sliding block; 403. a third sliding block; 51. a first U-shaped connector; 52. a first clamping block; 53. a second U-shaped connector; 54. a second clamping block; 6. a card slot; 7. a hook; 8. an unlocking device; 81. unlocking the box; 82. a push rod; 83. a transmission block; 84. an unlock button; 85. a pressure spring; 86. a guide bar; 9. a spring; 10. an anti-sloshing plate; 11. a sway bar; 12. a hollow abutment post; 13. a stabilizing block; 14. the connecting sleeve is rotated.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, fig. 2, fig. 3, for the utility model discloses a folding guardrail, set up pillar 1 and a plurality of guardrail 2 of setting between two pillars 1 including two symmetries, pillar 1 sets up and rotates first pillar 101 and the second pillar 102 of connecting from top to bottom, spout 3 that is linked together is seted up to first pillar 101 and second pillar 102, guardrail 2 includes from last main guardrail 201 and the several time guardrail 202 that down sets gradually, main guardrail 201 and the both ends of several times guardrail 202 are all slided and are connected in spout 3 through being provided with slider 4, be provided with the link gear between a plurality of guardrails 2, first pillar 101 is kept away from and is provided with block mechanism between second pillar 102 one end and the main guardrail 201.

The folding guardrail is used for nursing the side edge of a bed, when the folding guardrail is used for normal protection, the first support column 101 rotates to be in the same straight line with the second support column 102, the main guardrail 201 is pulled upwards, so that the main guardrail 201 slides upwards along the second support column 102 and the sliding groove 3 of the first support column 101 through the sliding block 4, meanwhile, due to the linkage mechanism arranged between the guardrails 2, the plurality of secondary guardrails 202 also move upwards along with the main guardrail 201, finally, the main guardrail 201 is clamped and fixed at one end, far away from the second support column 102, of the first support column 101 through the clamping mechanism, and the distances between the adjacent secondary guardrails 202 and the main guardrail 201 and between the secondary guardrails 202 and the secondary guardrails 202 are safe distances; when patient need get off the bed, the block mechanism between first pillar 101 of unblock and the main guardrail 201 to a plurality of time guardrails 202 that connect main guardrail 201 and through the link gear slide to the second pillar 102 within range downwards, then rotate the inboard respectively with the first pillar 101 of two symmetries and fold, thereby do not hinder patient's getting on and off the bed, and need not to demolish, comparatively convenient when nursing patient, work efficiency is higher, and the practicality is high.

In an embodiment, referring to fig. 1, 2, and 3, the number of the secondary guardrails 202 is two, and the slider 4 includes a first slider 401, a second slider 402, and a third slider 403, which are sequentially arranged from top to bottom; the linkage mechanism comprises a first U-shaped connecting piece 51, a first clamping block 52, a second clamping block 54, a second U-shaped connecting piece 53, a second clamping block 53 and a third clamping block, wherein the opening of the first U-shaped connecting piece 51 is fixed on the side wall surface of the first sliding block 401, the second clamping block 52 is fixed on the side wall surface of the second sliding block 402 and is matched with the first U-shaped connecting piece 51, the second clamping block 54 is fixed on the other side wall surface of the second sliding block 402, the; the lengths of the first U-shaped connector 51 and the second U-shaped connector 53 are respectively equal to the distance between the main guardrail 201 and the upper secondary guardrail 202 and the distance between the two secondary guardrails 202 in the normal state of the folding guardrail. The first sliding block 401 moves along with the up-and-down movement of the main guardrail 201, the second sliding block 402 and the third sliding block 403 move along with the up-and-down movement of the two secondary guardrails 202 respectively, when the main guardrail 201 is pulled to move upwards, the first sliding block 401 moves upwards in the sliding groove 3, at the moment, the first U-shaped connecting piece 51 fixed on the side wall surface of the first sliding block 401 at the opening moves upwards along with the first sliding block 51, and when the first sliding block 201 moves to a preset height, the first U-shaped connecting piece 51 hooks the first clamping block 52 on the second sliding block 402, so that the second sliding block 402 and the secondary guardrails 202; when the second sliding block 402 moves upwards to a preset height, the second U-shaped connecting piece 53 fixed to the side wall surface of the third sliding block 403 at the opening can hook the second clamping block 54 on the second sliding block 402, so that the third sliding block 403 and the secondary guardrails 202 connected to the third sliding block 403 are driven to move upwards, linkage between the main guardrail 201 and the adjacent secondary guardrails 202 and linkage between the secondary guardrails 202 and the adjacent secondary guardrails 202 are realized, all the main guardrails 201 and all the secondary guardrails 202 can be driven to slide upwards only by pulling the main guardrail 201, and the operation is more convenient and simple in structure.

Referring to fig. 1, 4 and 6, the clamping mechanism includes a clamping groove 6 formed at the bottom of the sliding groove 3 at one end of the first support 101 far from the second support 102, a hook 7 rotatably connected to the first sliding block 401 and matched with the clamping groove 6, and an unlocking device 8 acting on the hook 7, wherein the hook 7 penetrates through the first sliding block 401 and is provided with a spring 9, one end of the spring 9 is fixed to the upper end of the hook 7, and the other end of the spring 9 is fixed to one side of the first sliding block 401 far away from the sliding groove 3; when the hook 7 is in a normal state, the lower end clamping part of the hook 7 is abutted against the bottom of the chute 3, and the hook 7 is clamped into the clamping groove 6 under the action force of the spring 9 when sliding to the clamping groove 6. When the main guardrail 201 drives the first sliding block 401 to move upwards, the clamping part at the lower end of the clamping hook 7 is continuously abutted against the bottom surface of the sliding groove 3 due to the elastic force of the spring 9, and the clamping part at the lower end of the clamping hook 7 tends to move towards the bottom surface of the sliding groove 3; when and only when the first slider 401 slides to the first pillar 101 and is far away from one end of the second pillar 102, and the clamping portion at the lower end of the clamping hook 7 slides to the clamping groove 6, the clamping portion of the clamping hook 7 stretches into and is clamped in the clamping groove 6 due to the elastic force of the spring 9, so that clamping is carried out, the main guardrail 201 and the first slider 401 are fixed at one end of the first pillar 101, which is far away from the second pillar 102, and the folding guardrail is in a protection state.

In addition, referring to fig. 4 and 5, the unlocking device 8 of the present embodiment includes an unlocking box 81 fixed in the main guard rail 201, a push rod 82 connected to the main guard rail 201 in a sliding manner in a length direction and extending into the unlocking box 81, a transmission block 83 connected to the unlocking box 81 in a rotating manner in a sliding direction of the push rod 82, and an unlocking button 84 installed in the unlocking box 81, wherein the unlocking button 84 is provided with a pressure spring 85, one end of the pressure spring acts on the bottom of the unlocking button 84, and the other end of the pressure spring acts on the bottom of the unlocking box 81; when the unlocking button 84 is pressed down, the unlocking button 84 pushes the movable end of the transmission block 83 towards the end of the push rod 82, so that the push rod 82 acts on the upper end of the hook 7. When the folding guardrail needs to be folded, the clamping part of the clamping hook 7 needs to be rotated out of the clamping groove 6 through the unlocking device 8, so that the main guardrail 201 and the first sliding block 401 slide downwards along the sliding groove 3; during unlocking, the unlocking button 84 is pressed, when the unlocking button 84 is pressed down, the movable end of the transmission block 83 is pushed to rotate towards the end part of the push rod 82, so that the push rod 82 is pushed, the push rod 82 is pushed to move towards the direction of the clamping hook 7, and finally the upper end of the clamping hook 7 is acted on, because the central position of the clamping hook 7 is rotationally connected to the first sliding block 401, the upper end of the clamping hook 7 rotates under the action force of the push rod 82 at the moment, so that the clamping part at the lower end of the clamping hook 7 is rotated out of the clamping groove 6, the unlocking effect is achieved, the unlocking operation is convenient and fast, and the use of a user.

Referring to fig. 5, a guide rod 86 is vertically slidably connected to the bottom of the unlocking button 84, and a compression spring 85 is inserted into the guide rod 86. So as to ensure that the unlocking button 84 can be pressed and rebounded vertically and vertically, prevent the unlocking button 84 from being inclined in the pressing process and preventing the transmission block 83 from acting on the push rod 82, or prevent the unlocking button 84 from being blocked in rebounding.

In order to prevent the first support pillar 101 from shaking relative to the second support pillar 102, referring to fig. 1 and 6, a rotating connecting sleeve 14 is fixed at the rotating end of the first support pillar 101, the rotating connecting sleeve 14 is rotatably connected to the second support pillar 102 away from the end of the first support pillar 101, the cross section of the rotating connecting sleeve 14 is U-shaped, the opening faces the rotating direction of the first support pillar 101, and the rotating arc line of the bottom plane of the rotating connecting sleeve 14 is tangent to the top end of the second support pillar 102. When the first pillar 101 rotates to be in the same straight line with the second pillar 102 (i.e. when the first pillar 101 is in an unfolded state), the bottom end of the rotating connecting sleeve 14 with the U-shaped cross section abuts against the back side of the rotating node (the back side of the rotating direction of the first pillar 101) of the first pillar 101 and the second pillar 102, so as to prevent the first pillar 101 from shaking relative to the second pillar 102, and ensure the overall stability of the folding guardrail.

In order to further prevent the first support column 101 from shaking relative to the second support column 102, referring to fig. 1 and 6, a shaking prevention plate 10 is disposed at the opening of the rotary connection sleeve 14, and the vertical distance between the bottom end of the shaking prevention plate 10 and the rotation point of the rotary connection sleeve 14 is greater than the vertical distance between the rotation point of the rotary connection sleeve 14 and the outer wall surface of the second support column 102 in the opening direction of the rotary connection sleeve 14. When the first pillar 101 rotates to be in the same straight line with the second pillar 102 (namely, when the first pillar is in an unfolded state), the anti-sway plate 10 arranged at the opening of the rotating connecting sleeve 14 with the U-shaped cross section can abut against the front faces (the rotating direction side of the first pillar 101) of the rotating nodes of the first pillar 101 and the second pillar 102, so that the overall stability of the folding guardrail is further improved, and the safety is also improved.

In order to improve the overall stability of the folding fence, referring to fig. 2 and 6, a shaking prevention mechanism is provided between the first support 101 and the second support 102. To further improve the stability of the folding guard rail as a whole between the first and second struts 101, 102.

In this embodiment, referring to fig. 2 and 6, the anti-sway mechanism includes an anti-sway rod 11 fixed in the second support column 102 on the side of the third slider 403 away from the secondary guard rail 202 and a hollow abutting column 12 fixed in the end of the first support column 101 close to the second support column 102, wherein the anti-sway rod 11 moves up and down along with the third slider 403 and is inserted into the hollow abutting column 12 when sliding upwards along with the third slider 403. When the folding guardrail is pulled up and fixed along with the first sliding block 401 carried by the main guardrail 201, the second sliding block 402 and the third sliding block 403 are lifted up, so that the anti-shaking rod 11 moves upwards along with the third sliding block 403, finally, the upper end of the anti-shaking rod 11 penetrates through the top end of the first support column 101 and the bottom end of the second support column 102 and is inserted into the hollow abutting column 12, at the moment, the upper end of the anti-shaking rod 11 is inserted into the hollow abutting column 12 of the first support column 101, and the lower end of the anti-shaking rod 11 is fixed on the third sliding block 403 in the second support column 102, so that the stability of the first support column 101 and the second support column 102 is improved, and the stability and the safety of the folding guardrail are further guaranteed.

Referring to fig. 2 and 6, a stabilizing block 13 is fixed to the lower end of the anti-sway bar 11, and the stabilizing block 13 abuts against the third slider 403. The stability of the anti-sloshing bar 11 within the second support column 102 is ensured.

Of course, the folding guardrail not only can be used for nursing sickbeds, but also can be used in any places where the guardrail can be used.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a folding guardrail, includes that bisymmetry sets up pillar (1) and a plurality of setting guardrail (2) between two pillars (1), its characterized in that: pillar (1) sets up and rotate first pillar (101) and second pillar (102) of connecting from top to bottom including, spout (3) that are linked together are seted up to first pillar (101) and second pillar (102), guardrail (2) include from last main guardrail (201) and a plurality of time guardrail (202) that down set gradually, the both ends of main guardrail (201) and a plurality of time guardrail (202) are all slided through being provided with slider (4) and are connected in spout (3), and are a plurality of be provided with linkage between guardrail (2), second pillar (102) one end is kept away from in first pillar (101) with be provided with block mechanism between main guardrail (201).

2. The folding guardrail of claim 1, wherein: the number of the secondary guardrails (202) is two, and the sliding blocks (4) comprise a first sliding block (401), a second sliding block (402) and a third sliding block (403) which are sequentially arranged from top to bottom;

the linkage mechanism comprises a first U-shaped connecting piece (51) with an opening fixed on the side wall surface of the first sliding block (401), a first clamping block (52) fixed on the side wall surface of the second sliding block (402) and matched with the first U-shaped connecting piece (51), a second clamping block (54) fixed on the other side wall surface of the second sliding block (402), and a second U-shaped connecting piece (53) with an opening fixed on the side wall surface of the third sliding block (403) and matched with the second clamping block (54);

the lengths of the first U-shaped connecting piece (51) and the second U-shaped connecting piece (53) are respectively equal to the distance between the main guardrail (201) and the upper secondary guardrail (202) and the distance between the two secondary guardrails (202) when the guardrails are in a normal state.

3. The folding guardrail of claim 2, wherein: the clamping mechanism comprises a clamping groove (6) arranged at the bottom of the sliding groove (3) at one end, far away from the second support column (102), of the first support column (101), a clamping hook (7) which is rotatably connected to the first sliding block (401) and matched with the clamping groove (6), and an unlocking device (8) acting on the clamping hook (7), wherein the clamping hook (7) penetrates through the first sliding block (401) and is provided with a spring (9), one end of the spring (9) is fixed to the upper end of the clamping hook (7), and the other end of the spring is fixed to one side, far away from the sliding groove (3), of the first sliding; when the clamping hook (7) is in a normal state, the lower end clamping part of the clamping hook (7) is abutted against the bottom of the sliding groove (3), and the clamping hook (7) is clamped into the clamping groove (6) under the action force of the spring (9) when sliding to the clamping groove (6).

4. The folding guardrail of claim 3, wherein: the unlocking device (8) comprises an unlocking box (81) fixed in the main guardrail (201), a push rod (82) connected in a sliding mode along the length direction of the main guardrail (201) and extending into the unlocking box (81), a transmission block (83) connected in the unlocking box (81) in a rotating mode along the sliding direction of the push rod (82) and an unlocking button (84) installed in the unlocking box (81), wherein the unlocking button (84) is provided with a pressure spring (85), one end of the pressure spring acts on the bottom of the unlocking button (84), and the other end of the pressure spring acts on the bottom of the unlocking box (81); when the unlocking button (84) is pressed down, the unlocking button (84) pushes the movable end of the transmission block (83) to the end part direction of the push rod (82), so that the push rod (82) acts on the upper end of the hook (7).

5. The folding guardrail of claim 4, wherein: the bottom of the unlocking button (84) is vertically connected with a guide rod (86) in a sliding mode, and the pressure spring (85) penetrates through the guide rod (86).

6. The folding guardrail of claim 1, wherein: first pillar (101) rotation end is fixed with rotates adapter sleeve (14), rotate adapter sleeve (14) and keep away from first pillar (101) end rotation and connect in second pillar (102), the transversal U-shaped of personally submitting of rotation adapter sleeve (14), and the rotation direction of opening towards first pillar (101), it is tangent with the top of second pillar (102) to rotate the planar rotation pitch arc in adapter sleeve (14) bottom.

7. The folding guardrail of claim 6, wherein: an anti-shaking plate (10) is arranged at the opening of the rotating connecting sleeve (14), and the vertical distance between the bottom end of the anti-shaking plate (10) and the rotating point of the rotating connecting sleeve (14) is greater than the vertical distance between the rotating point of the rotating connecting sleeve (14) and the outer wall surface of the second support column (102) in the opening direction of the rotating connecting sleeve (14).

8. The folding guardrail of claim 2, wherein: an anti-shaking mechanism is arranged between the first supporting column (101) and the second supporting column (102).

9. The folding guardrail of claim 8, wherein: the anti-shaking mechanism comprises an anti-shaking rod (11) which is fixed in the second support column (102) at one side of the third sliding block (403) far away from the secondary guardrail (202) and a hollow butt joint column (12) which is fixed in the end, close to the second support column (102), of the first support column (101), wherein the anti-shaking rod (11) moves up and down along with the third sliding block (403) and is inserted into the hollow butt joint column (12) when moving upwards along with the third sliding block (403).

10. The folding guardrail of claim 9, wherein: and a stabilizing block (13) is fixed at the lower end of the anti-shaking rod (11), and the stabilizing block (13) abuts against the third sliding block (403).

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