CN219847170U - Sliding lifting type guardrail - Google Patents

Abstract

The utility model belongs to the field of medical beds, and particularly discloses a sliding lifting guardrail which comprises a slideway, an upper guardrail plate, a lower guardrail plate and a locking button, wherein an upper sliding block is arranged at the end part of the upper guardrail plate and is in sliding connection with the slideway; the end part of the lower guardrail plate is provided with a lower sliding block which is connected in the slideway in a sliding way; the lower slide block is movably connected with the upper slide block through a slide block connecting plate; the locking button is inserted into the slideway to form a supporting limit with the upper sliding block, the upper sliding block is fixed at a first position, the locking is released, and the upper sliding block slides to a second position; when the upper sliding block is located at the first position, the upper guardrail plate and the lower guardrail plate are far away, and when the upper sliding block is located at the second position, the upper guardrail plate and the lower guardrail plate are close to each other and slide together at the lowest point of the slideway. The utility model adopts a double-layer guardrail structure which is fully covered from the head of a bed to the tail of the bed, and the upper guardrail plate and the lower guardrail plate are movably connected through the sliding block connecting plate, so that the problems that a large gap is reserved between the head of the bed and the tail of the bed and a large space is occupied by lifting of the side guardrail are effectively solved.

Description

Sliding lifting type guardrail

Technical Field

The utility model relates to the field of medical beds, in particular to a sliding lifting guardrail.

Background

The guardrails of the existing bed body are mostly two-section lifting guardrails, a gap is reserved between the guardrails, a larger gap is reserved between the guardrails and the bed head, and the bed cannot realize omnibearing protection from the head to the foot of patients, old people and children; meanwhile, the lifting hidden guardrail in the market needs enough space on two sides of the bed body to lift, and has larger requirement on space.

The patent publication CN210991326U discloses an adjustable bed side guard bar, which has the function of adjusting the position of the bed side guard bar in the vertical direction, however, when adjusting, the side guard bar needs to be unfolded outwards to rotate the shaft part to lower to the bottom of the bed, and the guard bar is not in a full-surrounding form, so that a large gap is reserved between the bed head and the bed tail, and no dead angle protection cannot be achieved.

The patent publication No. CN105342781A discloses a child sickbed with a lifting guardrail, wherein guide rods are additionally arranged at two sides of the head and the tail of the child sickbed, and the guardrail is connected to the guide rods through guide connecting shafts, so that the guardrail can slide up and down along the guide rods. Although the guard rail is fully covered from the head of the bed to the tail of the bed and does not occupy a large space on the bed side during lifting, in the patent, the guard rail as a whole has a high height, requires a long sliding stroke when sliding to the lowest position, and occupies the bottom position of the bed body.

Disclosure of Invention

In view of the above, the present utility model provides a sliding lifting guardrail for solving or partially solving the problem that the existing lifting guardrail on the market cannot be fully covered and protected, and the problem that the lifting guardrail needs to occupy a larger space.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a sliding lifting guardrail disposed between the head and tail of a bed, comprising:

the slideway is vertically fixed at the edge of the head and the tail of the bed;

the end part of the upper guardrail plate is provided with an upper sliding block which is connected in the slideway in a sliding way;

the end part of the lower guardrail plate is provided with a lower sliding block which is connected in the slideway in a sliding way; the lower sliding block is movably connected with the upper sliding block through a sliding block connecting plate; one end of the sliding block connecting plate is fixed at the end part of the lower sliding block, which is close to the upper sliding block, and the other end of the sliding block connecting plate is in sliding connection with the upper sliding block;

the locking button is inserted into the slideway, forms a supporting limit with the upper sliding block, fixes the upper sliding block at a first position, releases the supporting limit of the locking button, and slides to a second position; when the upper sliding block is located at the first position, the upper guardrail plate is far away from the lower guardrail plate, and when the upper sliding block is located at the second position, the upper guardrail plate and the lower guardrail plate are close to each other and slide down at the lowest point of the slideway together.

According to the sliding lifting guardrail provided by the utility model, the guardrail fully covered from the head of the bed to the tail of the bed is structurally adopted, so that the problem that the head of the bed and the tail of the bed leave a large gap and cannot be protected without dead angles is effectively solved; simultaneously, go up guardrail board and lower guardrail board and link the board through the slider and carry out swing joint, can keep away from relatively and be close to, when expanding, two guardrail boards keep away from, and when contracting, two guardrail boards are close to, effectively practice thrift and receive and release the space, occupy the great problem in bed side when solving among the prior art bed side guardrail lift.

Preferably, a first shaft pin is arranged at one end of the upper sliding block far away from the lower sliding block, a sliding groove is formed in the middle of the sliding block connecting plate, and the first shaft pin slides in the sliding groove.

Preferably, at least two guardrail pin shafts are further arranged between the upper sliding block and the upper guardrail plate, one end of each guardrail pin shaft is fixedly connected with the upper sliding block, the other end of each guardrail pin shaft is fixedly connected with the upper guardrail plate, and the two guardrail pin shafts slide in the sliding groove.

Preferably, two ends of the upper guardrail plate and the lower guardrail plate are clamped with guardrail shields, the guardrail shields are provided with holes for accommodating the insertion of the guardrail pin shafts, and the guardrail shields cover the guardrail pin shafts and the fixed ends of the upper guardrail plate/the lower guardrail plate from two sides.

Preferably, the locking button comprises a button body, one end of the button body is a button end, a boss-shaped spring end is formed at the other end of the button body, a button spring is connected to the spring end, a lock tongue is radially protruded in the middle of the button body and inserted into the slide way, the upper slide block is supported and limited, the locking button is pressed, and the lock tongue is separated from the upper slide block supporting position to complete unlocking.

Preferably, a first locking groove for accommodating the lock tongue is formed in one side of the upper slider, which faces the direction of the locking button, and the first locking groove is provided with a release opening along the pressing direction of the locking button.

Preferably, the first locking groove is formed at the bottom end of the upper sliding block and is an arch-shaped end notch.

Preferably, the number of the locking buttons is two, the two locking buttons correspond to the first position and the lowest end of the slideway respectively, and a second locking groove is formed in the bottom end of the lower sliding block correspondingly.

Preferably, the sliding lifting guardrail further comprises a driving mechanism and a transmission mechanism, wherein the driving mechanism is connected with the transmission mechanism, the transmission mechanism is connected to the upper sliding block, and the transmission mechanism converts the rotation motion of the driving mechanism into linear motion and drives the upper sliding block to reciprocate along the slideway.

Preferably, the edge of the head and the tail of the bed is provided with a slideway mounting groove, and the slideway is embedded and mounted in the sliding mounting groove.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a sliding lifting guardrail according to the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is another view of FIG. 1;

FIG. 4 is a partial enlarged view at B in FIG. 3;

FIG. 5 is a schematic view showing the structure of a lock button and a button spring in the embodiment;

FIG. 6 is a diagram showing the positional relationship between the lock button and the upper slider in the embodiment;

FIG. 7 is a diagram showing the positional relationship between the upper slider and the guardrail pin in an embodiment;

FIG. 8 is a schematic diagram of the structure of the upper slider in the embodiment;

fig. 9 is a schematic structural diagram of the lower slider in the embodiment.

Reference numerals illustrate:

wherein, 1, the head and the tail of the bed; 2. an upper guardrail plate; 3. a lower guardrail plate; 4. a button spring; 5. a lock button; 6. a slideway; 7. an upper slider; 8. a lower slide block; 9. a sliding block connecting plate; 10. guard bar pin shaft; 11. an upper button hole; 12. a lower button hole; 13. a slideway mounting groove; 21. a guardrail shield; 51. a button end; 52. a button body; 53. a bolt; 54. a spring end; 61. a lock hole; 71. a first shaft pin; 72. a first locking groove; 73. an upper guardrail mounting hole; 81. a second pin; 82. a second locking groove; 83. and a lower guardrail mounting hole.

Detailed Description

The present utility model will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the utility model are shown, and in which embodiments of the utility model are shown, but in which the utility model is not limited to the embodiments shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The sliding lifting type guard rail of the present utility model is described below with reference to fig. 1 to 9.

Referring to fig. 1 to 4, fig. 1 to 4 show a schematic structural view of a sliding lifting type guardrail provided by the utility model. The sliding lifting type guardrail of the embodiment is used for bed bodies such as medical beds, nursing beds and household beds, and is arranged on two sides of the bed body of the medical bed for example, has the function of preventing a patient from rolling off the bed body, and can be contracted to the lower part of the bed body through the sliding type lifting function so as to bring convenience for the patient to get on and off the bed. Specifically, the medical bed may include a headboard and a footboard, which are identical in structure, and in this embodiment are each represented by a headboard 1; a machine body is arranged between the two head and tail parts 1, two sides of the machine body are provided with sliding lifting guardrails, each sliding lifting guardrail is provided with an upper guardrail plate 2 and a lower guardrail plate 3, the upper guardrail plate 2 and the lower guardrail plate 3 are arranged at intervals, the end parts of the two sides are connected, and sliding blocks are formed at the connecting ends of the two sides; the position of the inner side of the head and tail 1, which is connected with the upper guardrail plate 2 and the lower guardrail plate 3, is provided with a slideway mounting groove 13, the connecting line between the two head and tail 1 is used as a transverse direction, the width direction of the head and tail 1 is used as a longitudinal direction, the slideway mounting groove 13 is arranged towards the transverse direction, namely, the opposite sides of the two head and tail 1 are provided with an upper button hole and a lower button hole in the longitudinal direction of the head and tail 1 to form an upper guardrail locking position and a lower guardrail locking position, in particular, the two narrow sides of the head and tail 1 are provided with an upper button hole 11 and a lower button hole 12 which are communicated with the slideway mounting groove 13, and a locking button 5 is elastically spliced in the upper button hole 11 and the lower button hole 12 respectively; a slide way 6 is arranged in the slide way mounting groove 13, and the slide way 6 has the functions of sliding blocks which are connected with the two sides of the upper guardrail plate 2 and the lower guardrail plate 3, supporting the locking button 5 transversely and limiting the locking button 5 to axially rotate; the sliding blocks on two sides of the upper guardrail plate 2 and the lower guardrail plate 3 are connected in the sliding way 6 in a sliding way and are positioned through the locking buttons 5, specifically, the locking buttons 5 are provided with locking tongues 53 protruding towards the sliding blocks, the locking tongues 53 can support the sliding blocks from the bottoms of the sliding blocks, the positions of the upper guardrail plate 2 and the lower guardrail plate 3 are limited, and the upper guardrail plate 2 and the lower guardrail plate 3 are provided with an upper fixed gear and a lower fixed gear because the locking buttons 5 are inserted into the upper button holes 11 and the lower button holes 12; when the locking button 5 in the upper button hole 11 is supported at the bottom of the slider, the upper guardrail plate 2 and the lower guardrail plate 3 are positioned at a higher first position, and at this time, the upper guardrail plate 2 and the lower guardrail plate 3 form guardrail protections from above the two sides of the bed; when the locking button 5 in the upper button hole 11 releases the support of the sliding block, the sliding block falls freely and slides downwards from the slideway 6 to drive the upper guardrail plate 2 and the lower guardrail plate 3 to slide to the locking button 5 position in the lower button hole 12, and the upper guardrail plate 2 and the lower guardrail plate 3 are positioned at a lower second position under the support of the locking button 5 in the lower button hole 12, and at the moment, the upper guardrail plate 2 and the lower guardrail plate 3 are hidden below the lathe bed and do not occupy redundant space.

According to the sliding lifting guardrail provided by the embodiment, the upper guardrail plate 2 and the lower guardrail plate 3 which can slide in the vertical direction and are locked in a positioning mode are arranged between the head and tail 1, guardrail protection can be formed at the first position, and the guardrail can also slide to the second position to be hidden, so that the sliding lifting guardrail has the advantages of being simple in structure, reliable in locking and space-saving compared with a turnover or folding guardrail connecting mode.

On the basis of the above embodiment, in order to further realize locking of a plurality of height gears, a plurality of positioning support points are arranged on the sliding blocks, specifically, an upper sliding block 7 and a lower sliding block 8 are respectively arranged on two sides of the upper guardrail plate 2 and the lower guardrail plate 3, wherein the upper sliding block 7 is correspondingly arranged on the side surface of the upper guardrail plate 2, the lower sliding block 8 is correspondingly arranged on the side surface of the lower guardrail plate 3, and the bottoms of the two sliding blocks can be supported and fixed on the lock tongue 53 of the locking button 5; the upper slider 7 and the lower slider 8 are connected by a slider connecting plate 9.

Further, as shown in fig. 8, a first shaft pin 71 is provided on the side of the upper slider 7, the slider connecting plate 9 is provided with a sliding groove, the slider connecting plate 9 is tightly attached to the upper slider 7, the first shaft pin 71 slides in the sliding groove, so that the upper slider 7 can slide up and down relative to the slider connecting plate 9, meanwhile, a guardrail pin 10 is riveted on the side of the upper slider 7, one end of the guardrail pin 10 is connected with the upper guardrail plate 2, the other end of the guardrail pin passes through the sliding groove of the slider connecting plate 9 and is connected with the upper slider 7, and when the upper slider 7 slides relative to the slider connecting plate 9, the guardrail pin 10 can clamp the slider connecting plate 9 from the top of the sliding groove, so that the upper slider cannot fall off.

Further, as shown in fig. 9, a second shaft pin 81 is provided on the side surface of the end of the lower slider 8 near one end of the upper slider 7, and the second shaft pin 81 is fixedly connected with the bottom end of the slider connecting plate 9, so that the lower slider 8 and the slider connecting plate 9 form a whole, and when the upper slider 7 slides up and down relative to the slider connecting plate 9, the upper slider 7 and the lower slider 8 can be far away from and near each other.

Specifically, when the upper slider 7 slides to the topmost end, the upper guardrail plate 2 is driven to rise to a first position at the highest position, at this time, the distance between the upper slider 7 and the lower slider 8 is the largest, namely, the distance between the upper guardrail plate 2 and the lower guardrail plate 3 is the largest, the upper guardrail plate 2 and the lower guardrail plate 3 are continuously lifted upwards, the distance between the upper guardrail plate 2 and the lower guardrail plate 3 is not changed any more, and an integral lifting upwards along the slideway 6 is formed, and the upper guardrail plate can be lifted to the upper side of the machine body to reach the first position; when the locking at the first position is released, the upper guardrail plate 2 and the lower guardrail plate 3 integrally slide down in a free falling manner, and when the lower guardrail plate 3 slides to the lowest point of the slideway 6, the movement is stopped, at the moment, the upper guardrail plate 2 continues to slide downwards under the drive of the upper sliding block 7 until the distance between the upper sliding block 7 and the lower sliding block 8 becomes minimum, at the moment, the distance between the upper guardrail plate 2 and the lower guardrail plate 3 is minimum, and the whole guardrail plate is vertically contracted and hidden to the lower side of the lathe bed.

Further, referring to fig. 8 and 9, the upper slider 7 is provided with an upper rail mounting hole 73 in a direction perpendicular to the direction in which the rail pin 10 is inserted, for fastening the upper slider 7 and the rail pin 10; also, a lower rail mounting hole 83 is opened in the lower slider 8 perpendicular to the direction in which the rail pin 10 is inserted, for fastening the lower slider 8 and the rail pin 10.

Further, referring to fig. 8 and 9, the bottoms of the upper slider 7 and the lower slider 8 are both provided with locking grooves for supporting and locking the locking tongue 53, specifically, the bottom of the upper slider 7 is provided with a first locking groove 72, the bottom of the lower slider 8 is provided with a second locking groove 82, and the first locking groove 72 and the second locking groove 82 are both arc-shaped concave arch structures and are matched with the cylindrical locking tongue 53.

On the basis of the above embodiment, further, referring to fig. 2, a locking button 5 and an elastic connector with the same structure are provided in both the upper button hole 11 and the lower button hole 12, specifically, the upper button hole 11 is exemplified by the provision of a button spring 4 in the upper button hole 11, the locking button 5 is inserted outside the button spring 4, the locking button 5 has a lock tongue 53 facing the direction of the upper guardrail plate 2, the lock tongue 53 is locked with the upper slider 7 in a matched manner, the pressing of the locking button 5 can drive the lock tongue 53 to reciprocate along the width direction of the upper slider 7, and thus, the unlocking operation is completed, specifically, a lock hole 61 for accommodating the entry of the lock tongue and moving along the pressing direction is opened at the corresponding position of the slide 6, the lock tongue 53 passes through the lock hole and enters the slide 6, and when necessary, the support is locked at the bottom of the upper slider 7, thus forming the locking.

Further, the slide 6 is of a square tube structure, a slide way opening is formed in the direction of the upper guardrail plate 2 and the lower guardrail plate 3, the upper slider 7 and the lower slider 8 are rotationally arranged inside the square tube and extend outwards through the slide way opening to connect the upper guardrail plate 2 and the lower guardrail plate 3, specifically, the guardrail pin shaft 10 extends in the direction of the upper slider 7 and the lower slider 8 towards the upper guardrail plate 2 and the lower guardrail plate 3, and the guardrail pin shaft 10 plays a role of connecting the slider in the slide way and the guardrail outside the slide way.

Further, the lock hole 61 on the slide 6 is opened at the opposite side of the slide opening and at the position corresponding to the upper button hole 11, specifically, three vertical faces of the square tube are opened with through notches, namely, the transverse and longitudinal notches are opened with the movable lock tongue.

Further, with reference to fig. 5, the locking button 5 includes a button body 52, two ends of the button body 52 are respectively a button end 51 and a spring end 54, the button end 51 is pressed by a finger of a user, the spring end 54 is a raised pillar, and the outside of the pillar is sleeved with the button spring 4; in the middle part of button body 52, towards last slider 7 and slider 8 one side arch have cylindricality spring bolt 53, through pressing button body 52, can change the fore-and-aft position of spring bolt 53, and then realize the operation of unblock.

Further, the locking button 5 may be used as a locking device, and other structures with support and release support may be used, or an automatic falling lock and a manual unlocking structure may be used, which is not limited in the embodiment of the present utility model.

Further, there is guardrail guard 21 at both ends joint at last guardrail plate 2 and lower guardrail plate 3, guardrail guard 21 opens and holds guardrail round pin axle 10 male hole, guardrail guard 21 covers guardrail round pin axle 10 and the stiff end of last guardrail plate 2 or lower guardrail plate 3 from both sides, simultaneously, covers the tip of whole last guardrail plate 2 and lower guardrail plate 3, forms the protection, avoids the edge scratch, and guardrail guard 21 has the handheld recess in middle part simultaneously, is convenient for hold this position, slides about going up guardrail plate 2 or lower guardrail plate 3.

In some embodiments, a driving mechanism can be added to lift the upper guardrail plate 2 and the lower guardrail plate 3, for example, a lifting motor for driving the upper slide block 7 to vertically reciprocate is arranged at the bottom of the machine body, and the driving end of the lifting motor stretches into the interior of the slide way 6 to be connected with the upper slide block 7, so that better lifting effect is achieved. The drive mechanism may be a motor coupled to a gear box or the like capable of providing rotational movement.

It should be understood that, under the driving of the driving mechanism, the upper slider 7 is in power coupling connection with the driving structure, and under the driving of the driving mechanism, the upper slider 7 can slide along the slideway 6, thereby realizing automatic sliding along the sliding path. The driving mechanism may be an electric type, or an air pump type, or a hydraulic driving type.

The driving mechanism may include: the device comprises a power source, a driver and a transmission mechanism, wherein the driver is electrically connected with the power source, and the power source is in power coupling connection with the transmission mechanism.

The driving mechanism is electric, and comprises a driving motor which can be used as a power source of the driving mechanism, so that the driving force for driving the upper slide block 7 to move is conveniently output, and the driving motor is also connected with a transmission mechanism which is connected with the upper slide block 7.

The transmission mechanism may be a crank-link mechanism, a screw mechanism, a gear reducer, a belt transmission mechanism and a chain transmission mechanism, or may be other transmission mechanisms that convert rotary motion into linear motion, and the embodiment does not limit the specific types of transmission mechanisms.

The driving motor can be a stepping motor, a servo motor or a steering engine, and can be selected as the stepping motor in order to improve the driving precision.

Compared with the traditional lifting guardrail, the sliding lifting guardrail provided by the utility model is a full-coverage guardrail, namely the guardrail covers from the head of a bed to the tail of the bed, the side edge of the bed is fully covered, and the full protection of personnel on the bed is effectively realized, so that the falling of the bed and the clamping are avoided. When a patient gets on or off the bed, the guard rail can integrally fall to a position lower than the mattress, so that the patient can get off the bed conveniently, and the space is not occupied. The guardrail can be directly lifted when in use, and meanwhile, the guardrail can not occupy the space on two sides of a bed when in lifting.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Thus, various changes and modifications to the disclosed features and combinations of features not explicitly shown herein may be made by those skilled in the art within the scope of the utility model. The foregoing description of the embodiments and examples are illustrative rather than limiting.

Claims (9)

1. A sliding lifting guardrail disposed between the head and tail of a bed, comprising:

the slideway is vertically fixed at the edge of the head and the tail of the bed;

the end part of the upper guardrail plate is provided with an upper sliding block which is connected in the slideway in a sliding way;

the end part of the lower guardrail plate is provided with a lower sliding block which is connected in the slideway in a sliding way; the lower sliding block is movably connected with the upper sliding block through a sliding block connecting plate; one end of the sliding block connecting plate is fixed at the end part of the lower sliding block, which is close to the upper sliding block, and the other end of the sliding block connecting plate is in sliding connection with the upper sliding block;

the locking button is inserted into the slideway, forms a supporting limit with the upper sliding block, fixes the upper sliding block at a first position, releases the supporting limit of the locking button, and slides to a second position; when the upper sliding block is located at the first position, the upper guardrail plate is far away from the lower guardrail plate, and when the upper sliding block is located at the second position, the upper guardrail plate and the lower guardrail plate are close to each other and slide down at the lowest point of the slideway together.

2. The sliding lifting guardrail according to claim 1, wherein a first shaft pin is arranged at one end of the upper sliding block far away from the lower sliding block, a sliding groove is formed in the middle of the sliding block connecting plate, and the first shaft pin slides in the sliding groove.

3. The sliding lifting guardrail according to claim 2, wherein at least two guardrail pins are further arranged between the upper slider and the upper guardrail plate, one end of each guardrail pin is fixedly connected with the upper slider, the other end of each guardrail pin is fixedly connected with the upper guardrail plate, and the two guardrail pins both slide in the sliding groove.

4. A sliding lifting rail according to claim 3, wherein the rail guard is provided with rail guard covers at both ends of the upper and lower rail plates, the rail guard covers are provided with holes for receiving the insertion of the rail pins, and the rail guard covers cover the rail pins and the fixed ends of the upper/lower rail plates from both sides.

5. The sliding lifting guardrail according to claim 1, wherein the locking button comprises a button body, one end of the button body is a button end, the other end of the button body is a boss-shaped spring end, the spring end is connected with a button spring, a bolt is radially protruded in the middle of the button body, the bolt is inserted into the slideway, a supporting limit is formed for the upper sliding block, the locking button is pressed, and the bolt is separated from the supporting position of the upper sliding block to complete unlocking.

6. The sliding lifting guardrail according to claim 5, wherein a first locking groove for accommodating the lock tongue is formed in one side of the upper slider facing the direction of the locking button, and the first locking groove is provided with a release opening along the pressing direction of the locking button.

7. The sliding lifting rail of claim 6 wherein the first locking groove is formed in the bottom end of the upper slider as an arcuate end notch.

8. The sliding lifting guardrail according to claim 5, wherein the number of the locking buttons is two, the locking buttons correspond to the first position and the lowest end of the slideway respectively, and a second locking groove is formed in the bottom end of the lower slider.

9. The sliding lifting rail of any one of claims 1-8 further comprising a drive mechanism and a transmission mechanism, wherein the drive mechanism is connected to the transmission mechanism, the transmission mechanism is connected to the upper slider, and the transmission mechanism converts rotational movement of the drive mechanism into linear movement, driving the upper slider to reciprocate along the slideway.