CN211685221U - Assembled medical handcart of extensible - Google Patents

Abstract

The utility model relates to a handcart technical field especially relates to an assembled medical handcart of extensible. The to-be-solved technical problem of the utility model is to provide an assembled medical handcart of extensible. An extensible assembled medical trolley comprises a support frame, a glass garbage can and the like, wherein the glass garbage can is arranged at the left part of the inner bottom end of the support frame. The utility model discloses reached and kept under the unchangeable circumstances in automobile body lower part space through platform extension mechanism, extension upper portion space, be convenient for once only deposit and transport too much medical supplies, then deposit alone to valuable medical supplies through first folding drawer, avoid losing and damaging at the in-process of transportation, then accomplish the control to the automobile body fast through manual brake mechanism, shorten personnel's reaction time, each part forms balanced tripod through connecting fastener simultaneously, be convenient for assemble, thereby the platform extension has been realized, the drawer is folding, the effect of quick manual brake and easy equipment.

Description

Assembled medical handcart of extensible

Technical Field

The utility model relates to a handcart technical field especially relates to an assembled medical handcart of extensible.

Background

The medical trolley is a trolley which is convenient for storing and transporting various medical instruments and medicines, and solves the problem that medical staff are inconvenient to carry the medical instruments and medicines, the problem that the prior Chinese patent CN208741372U is large in size and inconvenient to transport due to the fact that the existing medical trolley is welded in structure is solved, and an assembled medical trolley is disclosed, wherein the trolley is simply assembled by designing an upright post, a connecting rod and a supporting plate in an assembled fixing mode through a bolt fastener and a connecting seat, so that the problems that the common trolley is formed by welding, cannot be disassembled, is large in size and inconvenient to transport are solved, but the space utilization rate of the original trolley is not expanded, the medical staff cannot place and transport the medical instruments when in use, and meanwhile, a certain external protection effect on the medical instruments is not achieved, damage and loss of medical articles can be caused, and assembly inclination caused by the same height cannot be guaranteed when the medical articles are assembled, connected and fixed through the connecting seat.

To sum up, at present, a medical trolley which can overcome the defect that the existing trolley cannot expand the space is required to be developed, so that the defects that the trolley cannot expand the use space after being assembled and fixed, the assembly is unbalanced, the trolley is easy to incline and the braking reaction is slow in the prior art are overcome.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the prior art handcart and assemble unable expansion usage space after fixing, the equipment is uneven, easy slope, the slow shortcoming of brake reaction, the to-be-solved technical problem of the utility model is to provide an extensible assembled medical trolley.

The utility model is achieved by the following concrete technical means:

an extensible assembled medical trolley comprises a support frame, a glass garbage can, other garbage cans, a platform extension mechanism, a hand brake mechanism, a first support plate, a first folding drawer, a second support plate, a garbage separation port, universal wheels and wheels; a glass dustbin is arranged at the left part of the bottom end in the supporting frame; the left part of the bottom end in the support frame is provided with other garbage cans, and the other garbage cans are positioned at the right part of the glass garbage can; the top end of the support frame is connected with the platform expanding mechanism; a hand brake mechanism is arranged at the front left part of the support frame; a first supporting plate is arranged at the middle upper part in the supporting frame; a second supporting plate is arranged at the lower right part in the supporting frame; the right part of the bottom end of the support frame is connected with the universal wheel through a bolt; the left part of the bottom end of the support frame is connected with a wheel through a bolt; a first folding drawer is arranged at the right part of the top end of the first supporting plate; a second folding drawer is arranged at the right part of the top end of the first supporting plate and is positioned at the left part of the first folding drawer; the left part of the bottom end of the first supporting plate is connected with the garbage separating port through a bolt.

Further, the platform expansion mechanism comprises a first supporting rod, a first sliding block, a third supporting plate, a first baffle, a supporting block, a first handle, a first spring, a first telescopic rod, a fourth supporting plate, a roller shaft, a fifth supporting plate, a first transmission rod, a second transmission rod, a third transmission rod, a second sliding block, a second supporting rod, a second telescopic rod, a second spring, a third telescopic rod and a locking block; the top end of the first supporting rod is welded with the first sliding block; the rear side of the first sliding block is in sliding connection with the third supporting plate; the right end of the third supporting plate is inserted into the first baffle; the right part of the bottom end of the third supporting plate is in sliding connection with the supporting block; the right middle part of the first baffle is spliced with a first handle; the left upper part of the first baffle is spliced with the first telescopic rod; the rear left part of the first spring is connected with the fourth supporting plate; the right upper part of the bottom end of the fourth supporting plate is in sliding connection with the roller shaft; a fifth supporting plate is arranged at the left upper part of the fourth supporting plate; the front and rear axle centers of the roll shaft are welded with the first transmission rod; the shaft center on the rear side of the roll shaft is welded with the third telescopic rod; the front middle left part of the fifth supporting plate is in sliding connection with the second sliding block; the middle part of the left end of the fifth supporting plate is connected with a second telescopic rod; the middle part of the left end of the fifth supporting plate is welded with the second spring, and the inner surface of the second spring is connected with the second telescopic rod; the front upper left part of the first transmission rod is in transmission connection with the second transmission rod; the front left lower part of the second transmission rod is in transmission connection with a third transmission rod; the bottom of the second transmission rod is provided with a locking block; the middle part of the bottom end of the second sliding block is welded with the second supporting rod; the bottom end of the first supporting rod is connected with the supporting frame; the bottom end of the supporting block is connected with the supporting frame; the left end of the first telescopic rod is connected with the support frame; the rear upper right part of the second transmission rod is connected with the support frame through a support rod; the bottom end of the second supporting rod is connected with the supporting frame; the left end of the second telescopic rod is connected with the support frame; the left end of the second spring is connected with the support frame; the bottom end of the third telescopic rod is connected with the support frame; the bottom end of the locking block is connected with the support frame.

Further, the hand brake mechanism comprises a rotating handle, a winding shaft, a steel wire rope, a driving wheel, a brake block, a third support rod, a fourth telescopic rod and a second handle; the left end of the rotating handle is tightly welded with the winding shaft; the center of the outer surface of the winding shaft is connected with the steel wire rope; the left end of the winding shaft is connected with a second handle; the front middle lower part of the steel wire rope is connected with a driving wheel; the bottom end of the steel wire rope is connected with a brake block; the front side axle center of the driving wheel is rotationally connected with the third supporting rod; the right middle part of the brake block is welded with the fourth telescopic rod; the front upper part of the third supporting rod is connected with the supporting frame; the right end of the fourth telescopic rod is connected with the wheel; the upper and lower parts of the right end of the second handle are connected with the support frame.

Further, the first folding drawer comprises a sliding plate, a first connecting fastener, a second baffle, a first drawer door, a second drawer door, a first handle, a second handle and a key hole; the front right middle part of the sliding plate is in threaded connection with the first connecting fastener; the front left middle part of the sliding plate is in threaded connection with the second connecting fastener; the top end of the sliding plate is rotatably connected with the second baffle, the front right middle part of the second baffle is connected with the first connecting fastener, and the front left middle part of the second baffle is connected with the second connecting fastener; a first drawer door is arranged at the rear right part of the second baffle; a second drawer door is arranged at the rear left part of the second baffle; a first handle is arranged in the front left middle part of the first drawer door; a second handle is arranged in the front right middle part of the second drawer door; a key hole is formed in the front upper right part of the second drawer door; the outer surface of the sliding plate is connected with the first supporting plate; the right part of the bottom end of the first drawer door is connected with a first supporting plate; the left part of the bottom end of the second drawer door is connected with the first supporting plate.

Furthermore, a semi-arc-shaped sliding block is arranged in the middle of the left of the locking block.

Furthermore, the front lower part of the rotating handle is in a half-arc shape.

Furthermore, the left side of the brake block is in a semicircular arc shape.

Furthermore, the garbage separating port is provided with two rectangular separating ports.

Compared with the prior art, the utility model discloses following beneficial effect has:

in order to solve the defects that the handcart cannot expand the use space after being assembled and fixed, is unbalanced in assembly, is easy to incline and has slow brake reaction in the prior art, a platform expansion mechanism, a hand brake mechanism and a first folding drawer are designed, the upper space is expanded under the condition that the lower space of the handcart body is kept unchanged by the platform expansion mechanism, the excessive medical supplies can be conveniently stored and transported at one time, then the valuable medical supplies can be independently stored by the first folding drawer, the precious medical supplies are prevented from being lost and damaged in the transportation process, then the handcart body is quickly controlled by the hand brake mechanism, the reaction time of personnel is shortened, the condition that the accidents are caused by overlooking the front due to over paying attention to feet when the foot brake is adopted is avoided, meanwhile, all parts form a balance tripod through connecting fasteners, the assembly is convenient, the platform expansion, the drawer folding and the hand brake are realized, Quick handbrake and easy assembly.

Drawings

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

FIG. 2 is a schematic structural view of the platform expanding mechanism of the present invention;

FIG. 3 is a schematic structural view of the hand brake mechanism of the present invention;

FIG. 4 is a left side view of the combination of the rotary handle and the spool of the present invention;

FIG. 5 is a schematic view of a first foldable drawer according to the present invention;

fig. 6 is a left side view of the locking block of the present invention;

FIG. 7 is an enlarged view of area C of the present invention;

fig. 8 is an enlarged view of the region D of the present invention.

The labels in the figures are: 1-support shelf, 2-glass waste bin, 3-other waste bin, 4-platform extension mechanism, 5-handbrake mechanism, 6-first support plate, 7-first folding drawer, 8-second folding drawer, 9-second support plate, 10-waste separation port, 11-universal wheel, 12-wheel, 401-first support rod, 402-first slide block, 403-third support plate, 404-first baffle, 405-support block, 406-first handle, 407-first spring, 408-first telescopic rod, 409-fourth support plate, 4010-roller shaft, 4011-fifth support plate, 4012-first transmission rod, 4013-second transmission rod, 4014-third transmission rod, 4015-second slide block, 4016-second support rod, 4017-second telescopic rod, 4018-second spring, 4019-third telescopic rod, 4020-locking block, 501-rotating handle, 502-bobbin, 503-steel wire rope, 504-driving wheel, 505-brake block, 506-third support rod, 507-fourth telescopic rod, 508-second handle, 701-sliding plate, 702-first connecting fastener, 703-second connecting fastener, 704-second baffle, 705-first drawer door, 706-second drawer door, 707-first handle, 708-second handle, and 709-keyhole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Examples

An extensible assembled medical trolley, as shown in fig. 1-8, comprises a support frame 1, a glass dustbin 2, other dustbin 3, a platform expansion mechanism 4, a hand brake mechanism 5, a first support plate 6, a first folding drawer 7, a second folding drawer 8, a second support plate 9, a garbage separation port 10, a universal wheel 11 and wheels 12; a glass dustbin 2 is arranged at the left part of the bottom end in the support frame 1; the left part of the bottom end in the support frame 1 is provided with other garbage cans 3, and the other garbage cans 3 are positioned at the right part of the glass garbage can 2; the top end of the support frame 1 is connected with the platform expanding mechanism 4; a hand brake mechanism 5 is arranged at the front left part of the support frame 1; a first supporting plate 6 is arranged at the middle upper part in the supporting frame 1; a second supporting plate 9 is arranged at the right lower part in the supporting frame 1; the right part of the bottom end of the support frame 1 is connected with a universal wheel 11 through a bolt; the left part of the bottom end of the support frame 1 is connected with a wheel 12 through a bolt; a first folding drawer 7 is arranged at the right part of the top end of the first supporting plate 6; a second folding drawer 8 is arranged at the right part of the top end of the first supporting plate 6, and the second folding drawer 8 is positioned at the left part of the first folding drawer 7; the left part of the bottom end of the first supporting plate 6 is connected with the garbage separating port 10 through a bolt.

When in use, the extensible assembled medical trolley is moved to a position to be used, firstly, the safety inspection is carried out on the device, the stability and the safety of the device are ensured, the universal wheels 11 and the wheels 12 are symmetrically arranged on the front side and the rear side of the support frame 1, the advancing direction of the trolley is controlled by manually adjusting the universal wheels 11 and the wheels 12, the single trolley can not meet the general space use requirement due to the limitation of the hospital moving space range of the general medical trolley, the bearing capacity of medical supplies is increased by expanding the top end space of the platform expanding mechanism 4, meanwhile, the original lower space of the trolley body can not be changed, important medical supplies and medical records can be locked and stored by the first folding drawer 7 and the second folding drawer 8, the loss in the transportation process is avoided, the articles in the drawers can be checked and taken out conveniently, the foldable drawer door can be rotated to expand to facilitate taking out of articles, then different medical supplies are recycled through the garbage separation port 10, the garbage generated by medical treatment is roughly classified and collected according to the current garbage classification requirement, particularly for glassware, the accident of hand cutting caused by manual work when the crushed glass is collected can be effectively reduced, then the handcart is manually braked through the hand brake mechanism 5, the general handcart adopts a foot brake which is not concentrated enough to easily cause the handcart to bump into the front, the reaction time of personnel is greatly improved by adopting the hand brake, the accident of collision is avoided, all the parts are basically connected in a bolt connection and insertion mode, and meanwhile, a balance tripod is formed by matching with a connecting fastener, so that the assembly is convenient, the structure is simple, the operation is convenient, and the platform expansion is realized, The drawer is folded, the hand brake is fast, and the assembly is easy.

The platform extension mechanism 4 comprises a first support rod 401, a first slide block 402, a third support plate 403, a first baffle 404, a support block 405, a first handle 406, a first spring 407, a first telescopic rod 408, a fourth support plate 409, a roller shaft 4010, a fifth support plate 4011, a first transmission rod 4012, a second transmission rod 4013, a third transmission rod 4014, a second slide block 4015, a second support rod 4016, a second telescopic rod 4017, a second spring 4018, a third telescopic rod 4019 and a locking block 4020; the top end of the first support rod 401 is welded with the first sliding block 402; the rear side of the first slider 402 is slidably connected with the third support plate 403; the right end of the third supporting plate 403 is inserted into the first baffle 404; the right part of the bottom end of the third supporting plate 403 is in sliding connection with the supporting block 405; the right middle part of the first baffle 404 is inserted with a first handle 406; the left upper part of the first baffle 404 is inserted into the first telescopic rod 408; the rear left part of the first spring 407 is connected with the fourth support plate 409; the right upper part of the bottom end of the fourth supporting plate 409 is in sliding connection with the roller shaft 4010; a fifth supporting plate 4011 is arranged at the upper left part of the fourth supporting plate 409; the front and rear axle centers of the roll shaft 4010 are welded with the first transmission rod 4012; the rear shaft center of the roll shaft 4010 is welded with a third telescopic rod 4019; the front middle left part of the fifth supporting plate 4011 is connected with a second slide block 4015 in a sliding way; the middle part of the left end of the fifth supporting plate 4011 is connected with a second telescopic rod 4017; the middle part of the left end of the fifth supporting plate 4011 is welded with a second spring 4018, and the inner surface of the second spring 4018 is connected with a second telescopic rod 4017; the front upper left part of the first transmission rod 4012 is in transmission connection with a second transmission rod 4013; the front left lower part of the second transmission rod 4013 is in transmission connection with a third transmission rod 4014; the bottom of the second transmission rod 4013 is provided with a locking block 4020; the middle part of the bottom end of the second sliding block 4015 is welded with a second supporting rod 4016; the bottom end of the first supporting rod 401 is connected with the supporting frame 1; the bottom end of the supporting block 405 is connected with the supporting frame 1; the left end of the first telescopic rod 408 is connected with the support frame 1; the rear upper right part of the second transmission rod 4013 is connected with the support frame 1 through a support rod; the bottom end of the second supporting rod 4016 is connected with the supporting frame 1; the left end of the second telescopic rod 4017 is connected with the support frame 1; the left end of the second spring 4018 is connected with the support frame 1; the bottom end of the third telescopic rod 4019 is connected with the support frame 1; the bottom of latch 4020 is connected with support frame 1.

When too many medical supplies are required to be stored at one time, the using space of the trolley is expanded through the platform expanding mechanism 4, the upper space is maximally utilized under the condition that the lower space of the trolley body is kept unchanged, the first handle 406 is pulled to drive the first telescopic rod 408 and the third support plate 403 to extend, meanwhile, the third support plate 403 drives the fourth support plate 409 to be pulled out through the roller shaft 4010 through the first spring 407, then the third support plate 403 is stably supported through the first support rod 401, the first sliding block 402 and the support block 405 to avoid unbalance of the medical supplies when being placed, then when the fourth support plate 409 is completely pulled out, the third support rod 4014 is manually clamped on the locking block 4020 to reduce the horizontal height difference between the plates because the fourth support plate 403 and the fifth support plate 4011, the second transmission rod 4013 and the first transmission rod 4012 are driven to rotate while the third transmission rod 4014 is driven to rotate, and then drive roller 4010 and third telescopic link 4019 and raise the support to fourth backup pad 409 bottom, in order to make fourth backup pad 409 take out the back completely and carry out the level fixed and place, remove fifth backup pad 4011 on second slider 4015 through the manual work, it is fixed to carry out buffering extrusion through utilizing second telescopic link 4017 and second spring 4018 to the left end of fifth backup pad 4011, first bracing piece 401 and first slider 402 all are provided with one in third backup pad 403 front and back side symmetry, second slider 4015 and second bracing piece 4016 all are provided with one in fifth backup pad 4011 front and back side symmetry, make the handcart keep under the unchangeable condition in automobile body lower part space, the upper portion space has been expanded, be convenient for deposit and transport too much medical appliances once only, avoided needing to carry out a lot of transportation inadequately because of the space, cause the problem that the dosage deviation appears in the medicine.

The hand brake mechanism 5 comprises a rotary handle 501, a winding shaft 502, a steel wire rope 503, a driving wheel 504, a brake block 505, a third support rod 506, a fourth telescopic rod 507 and a second handle 508; the left end of the rotary handle 501 is tightly welded with the winding shaft 502; the center of the outer surface of the winding shaft 502 is connected with a steel wire rope 503; the left end of the spool 502 is connected with a second handle 508; the front middle lower part of the steel wire rope 503 is connected with a driving wheel 504; the bottom end of the steel wire rope 503 is connected with a brake block 505; the front side axle center of the driving wheel 504 is rotationally connected with a third supporting rod 506; the right middle part of the brake block 505 is welded with the fourth telescopic rod 507; the front upper part of the third supporting rod 506 is connected with the supporting frame 1; the right end of the fourth telescopic rod 507 is connected with the wheel 12; the upper and lower parts of the right end of the second handle 508 are connected with the support frame 1.

When transporting medical appliances and medicine bottles, in order to improve the transport efficiency, the running speed of the trolley can be improved, but the existing common trolley adopts a foot brake mode to stop the trolley, so that the psychology of personnel is in a hurry, when the foot brake is noticed, the personnel can not quickly react and hit the front, the situation that glass products on the trolley are broken due to inertial collision is caused, and resources are wasted.

The first folding drawer 7 includes a sliding plate 701, a first connecting fastener 702, a second connecting fastener 703, a second blocking plate 704, a first drawer door 705, a second drawer door 706, a first handle 707, a second handle 708, and a keyhole 709; the front right middle part of the sliding plate 701 is in threaded connection with a first connecting fastener 702; the front left middle part of the sliding plate 701 is in threaded connection with a second connecting fastener 703; the top end of the sliding plate 701 is rotatably connected with a second baffle 704, the front right middle part of the second baffle 704 is connected with a first connecting fastener 702, and the front left middle part of the second baffle 704 is connected with a second connecting fastener 703; a first drawer door 705 is arranged at the rear right part of the second baffle 704; a second drawer door 706 is arranged at the rear left part of the second baffle 704; a first handle 707 is arranged in the front left middle of the first drawer door 705; a second handle 708 is arranged in the middle of the front right of the second drawer door 706; a key hole 709 is formed in the upper right front part of the second drawer door 706; the outer surface of the sliding plate 701 is connected with a first supporting plate 6; the right part of the bottom end of the first drawer door 705 is connected with a first supporting plate 6; the left part of the bottom end of the second drawer door 706 is connected with the first support plate 6.

The valuable medical appliances, medicines and medical cases need to be stored separately, so that the valuable medical appliances, medicines and medical cases are prevented from being lost and damaged in the transportation process, the first drawer door 705 and the second drawer door 706 are opened through the key matched with the keyhole 709, then the sliding plate 701 and the second baffle plate 704 are fixedly connected through the first connecting fastener 702 and the second connecting fastener 703, the sliding plate 701 and the second baffle plate 704 are kept to move uniformly, the first drawer door 705 and the second drawer door 706 are taken out simultaneously, then the sliding plate 701 is connected through controlling the first connecting fastener 702 and the second connecting fastener 703, so that the first drawer door 705 and the second drawer door 706 are controlled, the drawer can conveniently search and take out the articles in the drawer, the first drawer door 705 and the second drawer door 706 are opened in a vertically closed mode, and the opened drawer door can be used as a placing table for placing the articles, the problem of the loss of article and the traditional left and right side open and shut door still can close after opening, shelter from the sight is avoided.

The middle of the left side of the locking block 4020 is provided with a semi-arc-shaped sliding block which can be attached to the outer surface of the third transmission rod 4014, so that the contact area is increased, and the third transmission rod 4014 is prevented from falling off from the locking block 4020.

The front lower part of the rotary handle 501 is in a half-arc shape, which is beneficial for a hand to hold the handle.

Wherein, brake block 505 left side is half circular arc form, is convenient for paste the extrusion brake to the gear.

The garbage separation port 10 is provided with two rectangular separation ports, so that different types of garbage can be classified and recycled conveniently.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims (8)

1. An extensible assembled medical trolley comprises a support frame (1), a glass garbage can (2) and other garbage cans (3), and is characterized by further comprising a platform extension mechanism (4), a hand brake mechanism (5), a first support plate (6), a first folding drawer (7), a second folding drawer (8), a second support plate (9), a garbage separation port (10), universal wheels (11) and wheels (12); a glass dustbin (2) is arranged at the left part of the inner bottom end of the support frame (1); the left part of the bottom end in the support frame (1) is provided with other garbage cans (3), and the other garbage cans (3) are positioned at the right part of the glass garbage can (2); the top end of the support frame (1) is connected with the platform expansion mechanism (4); a hand brake mechanism (5) is arranged at the front left part of the support frame (1); a first supporting plate (6) is arranged at the middle upper part in the supporting frame (1); a second supporting plate (9) is arranged at the right lower part in the supporting frame (1); the right part of the bottom end of the support frame (1) is connected with the universal wheel (11) through a bolt; the left part of the bottom end of the support frame (1) is connected with a wheel (12) through a bolt; a first folding drawer (7) is arranged at the right part of the top end of the first supporting plate (6); a second folding drawer (8) is arranged at the right part of the top end of the first supporting plate (6), and the second folding drawer (8) is positioned at the left part of the first folding drawer (7); the left part of the bottom end of the first supporting plate (6) is connected with the garbage separating port (10) through a bolt.

2. The expandable modular medical cart of claim 1, wherein platform expansion mechanism (4) comprises a first support bar (401), a first slider (402), a third support plate (403), a first stop (404), a support block (405), a first handle (406), a first spring (407), a first telescoping bar (408), a fourth support plate (409), a roller shaft (4010), a fifth support plate (4011), a first drive rod (4012), a second drive rod (4013), a third drive rod (4014), a second slider (4015), a second support bar (4016), a second telescoping bar (4017), a second spring (4018), a third telescoping bar (4019), and a locking block (4020); the top end of the first supporting rod (401) is welded with the first sliding block (402); the rear side of the first sliding block (402) is connected with the third supporting plate (403) in a sliding way; the right end of the third supporting plate (403) is spliced with the first baffle (404); the right part of the bottom end of the third supporting plate (403) is in sliding connection with the supporting block (405); the right middle part of the first baffle (404) is spliced with a first handle (406); the left upper part of the first baffle (404) is spliced with a first telescopic rod (408); the rear left part of the first spring (407) is connected with a fourth supporting plate (409); the right upper part of the bottom end of the fourth supporting plate (409) is in sliding connection with the roller shaft (4010); a fifth support plate (4011) is arranged on the upper left part of the fourth support plate (409); the front and rear axle centers of the roll shaft (4010) are welded with the first transmission rod (4012); the rear shaft center of the roll shaft (4010) is welded with a third telescopic rod (4019); the front middle left part of the fifth supporting plate (4011) is connected with the second sliding block (4015) in a sliding way; the middle part of the left end of the fifth supporting plate (4011) is connected with a second telescopic rod (4017); the middle part of the left end of the fifth supporting plate (4011) is welded with a second spring (4018), and the inner surface of the second spring (4018) is connected with a second telescopic rod (4017); the front upper left part of the first transmission rod (4012) is in transmission connection with the second transmission rod (4013); the front left lower part of the second transmission rod (4013) is in transmission connection with a third transmission rod (4014); the bottom of the second transmission rod (4013) is provided with a locking block (4020); the middle part of the bottom end of the second sliding block (4015) is welded with the second supporting rod (4016); the bottom end of the first supporting rod (401) is connected with the supporting frame (1); the bottom end of the supporting block (405) is connected with the supporting frame (1); the left end of the first telescopic rod (408) is connected with the support frame (1); the rear upper right part of the second transmission rod (4013) is connected with the support frame (1) through a support rod; the bottom end of the second supporting rod (4016) is connected with the supporting frame (1); the left end of the second telescopic rod (4017) is connected with the support frame (1); the left end of the second spring (4018) is connected with the support frame (1); the bottom end of the third telescopic rod (4019) is connected with the support frame (1); the bottom end of the locking block (4020) is connected with the support frame (1).

3. The expandable modular medical cart of claim 2, wherein the hand brake mechanism (5) comprises a turning handle (501), a spool (502), a cable (503), a drive wheel (504), a brake block (505), a third support bar (506), a fourth telescoping bar (507) and a second handle (508); the left end of the rotating handle (501) is tightly welded with the winding shaft (502); the center of the outer surface of the winding shaft (502) is connected with a steel wire rope (503); the left end of the winding shaft (502) is connected with a second handle (508); the front middle lower part of the steel wire rope (503) is connected with a driving wheel (504); the bottom end of the steel wire rope (503) is connected with a brake block (505); the front side axle center of the driving wheel (504) is rotationally connected with a third supporting rod (506); the right middle part of the brake block (505) is welded with the fourth telescopic rod (507); the front upper part of the third supporting rod (506) is connected with the supporting frame (1); the right end of the fourth telescopic rod (507) is connected with the wheels (12); the upper and lower parts of the right end of the second handle (508) are connected with the support frame (1).

4. The expandable modular medical cart of claim 3, wherein the first folding drawer (7) comprises a slide plate (701), a first connection fastener (702), a second connection fastener (703), a second flap (704), a first drawer door (705), a second drawer door (706), a first handle (707), a second handle (708), and a keyhole (709); the front right middle part of the sliding plate (701) is in threaded connection with a first connecting fastener (702); the front left middle part of the sliding plate (701) is in threaded connection with a second connecting fastener (703); the top end of the sliding plate (701) is rotatably connected with a second baffle (704), the front right middle part of the second baffle (704) is connected with a first connecting fastener (702), and the front left middle part of the second baffle (704) is connected with a second connecting fastener (703); a first drawer door (705) is arranged at the rear right part of the second baffle (704); a second drawer door (706) is arranged at the rear left part of the second baffle (704); a first handle (707) is arranged in the front left middle part of the first drawer door (705); a second handle (708) is arranged in the middle of the front right of the second drawer door (706); a key hole (709) is formed in the upper right front part of the second drawer door (706); the outer surface of the sliding plate (701) is connected with a first supporting plate (6); the right part of the bottom end of the first drawer door (705) is connected with a first supporting plate (6); the left part of the bottom end of the second drawer door (706) is connected with the first supporting plate (6).

5. The expandable modular medical cart of claim 4, wherein the locking block (4020) has a semi-arcuate slider at the left middle.

6. The expandable modular medical cart of claim 5, wherein the lower front portion of the swing handle (501) is in the shape of a half-arc.

7. The expandable modular medical cart of claim 6, wherein the left side of brake block (505) is semi-circular arc shaped.

8. An expandable modular medical trolley according to claim 7, wherein the waste separation opening (10) is provided with two rectangular separation openings.

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