Medical instrument storage box
Technical Field
The invention relates to a storage box, in particular to a medical instrument storage box.
Background
The medical instrument storage box in the prior art has the problems of single structure and single function, and cannot be unfolded to be used as a medical operating table or a test bed; for example, patent application number is CN 201520512487.1's a medical instrument case, including box and case lid, the back end face upper end of box is through activity pin connection case lid, the front end of storing the box about both ends face passes through the locating pin activity to be fixed on the both ends face about the case lid, and the back end passes through backing sheet activity to be fixed on the both ends face about the box, and through locating pin swing joint between backing sheet and the storage box, the inside equidistance of storage box is equipped with the baffle. The medical instrument storage box of this patent has the problem that the structure is single, and the function is single, can't expand and use as medical operating table or test bench.
Disclosure of Invention
The invention aims to provide a medical instrument storage box, which can change the whole structure through a drive control assembly, and adjust a side cover assembly, a lifting tray assembly, the drive control assembly, a pulley seat assembly and a positioning seat assembly, so that the medical instrument storage box is changed into a medical operating table or a test bed.
The purpose of the invention is realized by the following technical scheme:
a medical instrument storage box comprises an outer box body, a handle assembly, side box cover assemblies, a lifting tray assembly, a drive control assembly, pulley seat assemblies, positioning seat assemblies and a storage box body, wherein the left side and the right side of the outer box body are respectively connected with one side box cover assembly in a rotating fit mode; the lower end of the drive control assembly is in transmission connection with a pulley seat assembly, and the pulley seat assembly is connected to the lower end of the outer box in a sliding fit manner; the positioning seat assembly is connected to the outer box body, and the two side box cover assemblies are clamped and blocked at the upper end of the positioning seat assembly; the storage box body is fixedly connected to the inner side of the outer box body.
The left side surface and the right side surface of the outer box body are hollow; the top surface of the outer box body is provided with a containing groove, the bottom surface of the outer box body is fixedly connected with an L-shaped object placing plate, and a vertical plate of the L-shaped object placing plate is provided with a left rectangular sliding groove and a right rectangular sliding groove; and a vertical sliding groove is formed in the front side surface of the outer box body.
The handle assembly comprises a handle body, a limiting sliding block and a positioning screw; the handle body is fixedly connected to the top surface of the outer box body, and the limiting slide block is connected to the handle body through a positioning screw.
The lifting tray assembly comprises a tray body, an external thread lifting rod and a guide sliding chute; the tray body is fixedly connected to the external thread lifting rod, a guide sliding groove is formed in the external thread lifting rod, and the limiting sliding block is connected to the inner side of the guide sliding groove in a sliding fit mode; the tray body is connected to the inner side of the accommodating groove in a clearance fit manner; the lower end of the external thread lifting rod is connected to the upper end of the drive control assembly through threads.
The drive control assembly comprises a drive motor, a drive gear, a driven gear, a drive rotating pipe, a worm, a lifting connecting plate and two short shafts; the driving motor is fixedly connected to the bottom surface of the inner side of the outer box body through a motor base, a driving gear is fixedly connected to an output shaft of the driving motor, the driving gear is meshed with a driven gear, the driven gear is fixedly connected to a driving rotating pipe, and the upper end and the lower end of the driving rotating pipe are respectively rotatably connected to the outer box body through bearings with seats; the lower end of the driving rotating pipe is connected with a worm in a welding mode, and the lower end of the worm is rotatably connected to the L-shaped object placing plate through a bearing with a seat; the worm is in transmission connection with the pulley seat assembly; the driving rotating pipe is connected to the middle end of the lifting connecting plate through threads, two short shafts are fixedly connected to two ends of the lifting connecting plate respectively, and the two short shafts are connected to the two side tank cover assemblies in a sliding fit mode respectively; the lifting connecting plate is connected to the inner side surface of the outer box body in a sliding fit manner; the lower end of the external thread lifting rod is connected to the inner side of the driving rotating pipe through threads.
The side tank cover component comprises a side tank cover body, a fixed shaft, a sliding groove frame and a rotary pressing plate; one end of the side box cover body is fixedly connected with a fixed shaft, two ends of the fixed shaft are respectively and rotatably connected to the outer box body through bearings with seats, the front end of the fixed shaft is fixedly connected with one end of a rotary pressing plate, and the other end of the rotary pressing plate is blocked on the positioning seat component; the inner side surface of the side box cover body is fixedly connected with a sliding groove frame; the short shaft is connected in a sliding groove of the sliding groove frame in a sliding fit mode.
The rotary pressing plate and the side box cover body are vertically arranged.
The positioning seat assembly comprises a T-shaped positioning block, a pressing frame, a lifting pressing block, a spring rod and a compression spring; the T-shaped positioning block is fixedly connected to the lower end of the pressing frame, the T-shaped positioning block is arranged on the outer side of the outer box body, the middle end of the pressing frame is fixedly connected with the lifting pressing block, and the lifting pressing block is connected to the inner side of the vertical sliding chute in a sliding fit manner; the spring rod is connected to the lifting pressing block in a sliding fit mode, a compression spring is sleeved on the spring rod, the lower end of the spring rod is fixedly connected to the bottom surface of the outer box body, and the compression spring is arranged between the lifting pressing block and the bottom surface of the outer box body; the rotary pressing plate is blocked on the pressing frame.
The pulley seat component comprises a worm gear, a bidirectional threaded rod, two rod frames, two push-pull sliding plates, two rear wheel frames, two connecting frame rods, two front wheel frames and eight traveling wheels; the worm wheel is fixedly connected to the middle end of the bidirectional threaded rod, the bidirectional threaded rod is rotatably connected to two rod frames through a bearing with a seat, the two rod frames are fixedly connected to the outer box body, one ends of the two push-pull sliding plates are symmetrically connected to two ends of the bidirectional threaded rod through threads respectively, the middle ends of the two push-pull sliding plates are connected to two rectangular sliding grooves in a vertical plate of the L-shaped object placing plate in a sliding fit mode respectively, the rear ends of the two push-pull sliding plates are fixedly connected with a rear wheel frame respectively, and the two rear wheel frames are connected with a front wheel frame through a connecting; the two rear wheel frames, the two connecting frame rods and the two front wheel frames are all arranged on the outer sides of the outer box body and the L-shaped object placing plate; the front wheel frame and the rear wheel frame are respectively connected with two traveling wheels through wheel shafts; the worm wheel is meshed with the worm.
And a coded lock is arranged on the door of the storage box body.
The invention has the beneficial effects that: according to the medical instrument storage box, the whole structure can be changed through the driving control assembly, and the adjusting side tank cover assembly, the lifting tray assembly, the pulley seat assembly and the positioning seat assembly can be used as a medical operating table or a test bed after being adjusted; in addition, the side tank cover assembly, the lifting tray assembly, the pulley seat assembly and the positioning seat assembly in the box-type electric vehicle are driven by the driving control assembly to synchronously work, so that the deformation and expansion efficiency is high, and the retraction and return speed is high.
Drawings
FIG. 1 is a first general structural diagram of the present invention;
FIG. 2 is a second overall structural schematic of the present invention;
FIG. 3 is a first schematic view of the inner and outer cases of the present invention;
FIG. 4 is a second schematic structural view of the inner and outer cases of the present invention;
FIG. 5 is a schematic view of the construction of the interior handle assembly of the present invention;
FIG. 6 is a schematic structural view of the inside side cover assembly of the present invention;
FIG. 7 is a schematic structural view of the internal lift tray assembly of the present invention;
FIG. 8 is a schematic structural diagram of the internal drive control assembly of the present invention;
FIG. 9 is a schematic view of the internal sheave block assembly of the present invention;
FIG. 10 is a schematic view of the internal anchor assembly of the present invention.
In the figure: an outer case 1; a receiving groove 1-1; an L-shaped object placing plate 1-2; 1-3 of a rectangular chute; 1-4 of vertical chutes; a handle assembly 2; 2-1 of a handle body; 2-2 of a limiting slide block; 2-3 of a positioning screw; a side tank cover assembly 3; a side box cover body 3-1; 3-2 of a fixed shaft; 3-3 of a chute frame; 3-4 of a rotary pressing plate; a lifting tray assembly 4; a tray body 4-1; an external thread lifting rod 4-2; 4-3 of a guide chute; a drive control unit 5; a driving motor 5-1; a drive gear 5-2; 5-3 of a driven gear; 5-4 of a driving rotating pipe; 5-5 parts of worm; 5-6 of a lifting connecting plate; 5-7 of a short shaft; a pulley seat assembly 6; a worm wheel 6-1; a bidirectional threaded rod 6-2; 6-3 of a rod frame; 6-4 of a sliding plate; 6-5 parts of a rear wheel frame; 6-6 of a side link; 6-7 parts of a front wheel frame; 6-8 of a traveling wheel; a positioning seat assembly 7; 7-1 of a T-shaped positioning block; a pressing frame 7-2; 7-3 of a lifting pressing block; 7-4 of a spring rod; 7-5 of a compression spring; the box body 8 is stored.
Detailed Description
The invention is described in further detail below with reference to figures 1-10.
The first embodiment is as follows:
as shown in fig. 1-10, a medical instrument storage box comprises an outer box body 1, a handle assembly 2, side box cover assemblies 3, a lifting tray assembly 4, a drive control assembly 5, a pulley seat assembly 6, a positioning seat assembly 7 and a storage box body 8, wherein the left side and the right side of the outer box body 1 are respectively connected with one side box cover assembly 3 in a rotating fit manner, the two side box cover assemblies 3 are respectively connected with two ends of the drive control assembly 5 in a sliding fit manner, the drive control assembly 5 is connected with the inner side of the outer box body 1, the upper end of the drive control assembly 5 is connected with the lifting tray assembly 4, the lifting tray assembly 4 is connected on the handle assembly 2 in a sliding fit manner, and the handle assembly 2 is fixedly connected on the outer; the lower end of the driving control component 5 is in transmission connection with a pulley seat component 6, and the pulley seat component 6 is in sliding fit connection with the lower end of the outer box body 1; the positioning seat assembly 7 is connected to the outer box body 1, and the two side box cover assemblies 3 are clamped and blocked at the upper end of the positioning seat assembly 7; the storage box body 8 is fixedly connected to the inner side of the outer box body 1. When the medical instrument storage box is used, the drive control assembly 5 is communicated with a power supply and is started through the control switch, and then the drive control assembly 5 drives the lifting tray assembly 4 to lift upwards, so that common surgical instruments or other medical supplies can be placed conveniently; the driving control assembly 5 drives the two side tank cover assemblies 3 to turn outwards, so that the two side tank cover assemblies 3 are coplanar with the top surface of the outer box body 1, and a large operating table or a large test bed is formed for use; the lower end of the drive control assembly 5 drives the two ends of the pulley seat assembly 6 to perform outward expansion movement, so that the pulley seat assembly 6 can stably support an operating table or a test table formed by the two side tank cover assemblies 3 and the top surface of the outer box body 1, meanwhile, the positioning seat assembly 7 moves downwards under the drive of the two side tank cover assemblies 3, and the bottom end of the positioning seat assembly 7 is in contact with the ground, so that the position of the invention is fixed, and the invention is prevented from sliding; the inner side of the storage box body 8 is used for storing medical instruments.
The left side surface and the right side surface of the outer box body 1 are hollowed; the top surface of the outer box body 1 is provided with a containing groove 1-1, the bottom surface of the outer box body 1 is fixedly connected with an L-shaped object placing plate 1-2, and a vertical plate of the L-shaped object placing plate 1-2 is provided with a left rectangular sliding groove 1-3 and a right rectangular sliding groove 1-3; the front side surface of the outer box body 1 is provided with vertical sliding grooves 1-4.
The second embodiment is as follows:
as shown in fig. 1-10, the handle assembly 2 comprises a handle body 2-1, a limiting slide block 2-2 and a positioning screw 2-3; the handle body 2-1 is fixedly connected to the top surface of the outer box body 1, and the limiting slide block 2-2 is connected to the handle body 2-1 through a positioning screw 2-3. The handle body 2-1 is used for dragging the invention to move.
The lifting tray component 4 comprises a tray body 4-1, an external thread lifting rod 4-2 and a guide chute 4-3; the tray body 4-1 is fixedly connected to the external thread lifting rod 4-2, the external thread lifting rod 4-2 is provided with a guide sliding groove 4-3, and the limiting sliding block 2-2 is connected to the inner side of the guide sliding groove 4-3 in a sliding fit manner; the tray body 4-1 is connected to the inner side of the accommodating groove 1-1 in a clearance fit manner; the lower end of the external thread lifting rod 4-2 is connected with the upper end of the driving control component 5 through threads. When the handle assembly 2 and the lifting tray assembly 4 are used, the external thread lifting rod 4-2 is driven by the driving control assembly 5 to ascend or descend, the external thread lifting rod 4-2 is provided with the guide sliding groove 4-3, the guide sliding groove 4-3 is matched with the limiting sliding block 2-2 for use, the external thread lifting rod 4-2 can perform lifting motion when the driving control assembly 5 works, the external thread lifting rod 4-2 drives the tray body 4-1 to perform lifting motion, and the inner side of the tray body 4-1 is used for placing medical instruments.
The third concrete implementation mode:
as shown in fig. 1-10, the driving control assembly 5 comprises a driving motor 5-1, a driving gear 5-2, a driven gear 5-3, a driving rotating pipe 5-4, a worm 5-5, a lifting connecting plate 5-6 and two short shafts 5-7; the driving motor 5-1 is fixedly connected to the bottom surface of the inner side of the outer box body 1 through a motor base, an output shaft of the driving motor 5-1 is fixedly connected with a driving gear 5-2, the driving gear 5-2 is meshed with a driven gear 5-3, the driven gear 5-3 is fixedly connected to a driving rotating pipe 5-4, and the upper end and the lower end of the driving rotating pipe 5-4 are respectively connected to the outer box body 1 through bearings with bases in a rotating mode; the lower end of the driving rotating pipe 5-4 is connected with a worm 5-5 in a welding mode, and the lower end of the worm 5-5 is rotatably connected to the L-shaped object placing plate 1-2 through a bearing with a seat; the worm 5-5 is in transmission connection with a pulley seat assembly 6; the driving rotating pipe 5-4 is connected to the middle end of the lifting connecting plate 5-6 through threads, two short shafts 5-7 are fixedly connected to two ends of the lifting connecting plate 5-6 respectively, and the two short shafts 5-7 are connected to the two side tank cover assemblies 3 in a sliding fit mode respectively; the lifting connecting plates 5-6 are connected to the inner side surface of the outer box body 1 in a sliding fit manner; the lower end of the external thread lifting rod 4-2 is connected to the inner side of the driving rotating pipe 5-4 through threads. When the driving control assembly 5 is used, after the driving motor 5-1 is communicated with a power supply and is started through the control switch, an output shaft of the driving motor 5-1 drives the driving gear 5-2 to rotate, the driving gear 5-2 drives the driven gear 5-3 to rotate, the driven gear 5-3 drives the driving rotating pipe 5-4 to rotate, the driving rotating pipe 5-4 drives the lifting connecting plate 5-6 to move up and down when rotating, and the lifting connecting plate 5-6 can drive the two side tank cover assemblies 3 to turn outwards and unfold or contract inwards and close inwards when moving up and down through the two short shafts 5-7; the driving rotating pipe 5-4 can also drive the external thread lifting rod 4-2 to ascend or descend when rotating; the driving rotating pipe 5-4 can also drive the worm 5-5 to rotate when rotating, and the worm 5-5 can drive two ends of the pulley seat assembly 6 to perform outward expansion motion or inward contraction motion when rotating, so that the pulley seat assembly 6 can stably support an operating table or a test table formed by the two side cover assemblies 3 and the top surface of the outer box body 1.
The fourth concrete implementation mode:
as shown in fig. 1 to 10, the side cover assembly 3 includes a side cover body 3-1, a fixed shaft 3-2, a chute frame 3-3 and a rotary pressing plate 3-4; one end of the side box cover body 3-1 is fixedly connected with a fixed shaft 3-2, two ends of the fixed shaft 3-2 are respectively and rotatably connected to the outer box body 1 through bearings with seats, the front end of the fixed shaft 3-2 is fixedly connected with one end of a rotary pressing plate 3-4, and the other end of the rotary pressing plate 3-4 is blocked on the positioning seat assembly 7; the inner side surface of the side box cover body 3-1 is fixedly connected with a sliding groove frame 3-3; the short shafts 5-7 are connected in the sliding grooves of the sliding groove frames 3-3 in a sliding fit mode. When the side box cover assemblies 3 are used, the driving rotating pipes 5-4 are driven to rotate to drive the lifting connecting plates 5-6 to move up and down, and when the lifting connecting plates 5-6 move up and down, the lifting connecting plates 5-6 can drive the two short shafts 5-7 to slide on the inner sides of the two sliding groove frames 3-3 of the two side box cover assemblies 3, so that the two side box cover bodies 3-1 are driven to be overturned outwards to form a large operating table or a test bed for use, or are contracted inwards to form a medical instrument storage box convenient to carry and move for use.
The rotary pressing plate 3-4 and the side box cover body 3-1 are vertically arranged. When the rotary pressing plate 3-4 on the inner side of the side box cover component 3 is used, when the side box cover body 3-1 is turned to be in the same plane with the top surface of the outer box body 1, the fixed shaft 3-2 drives the rotary pressing plate 3-4 to rotate, and the rotary pressing plate 3-4 is gradually and vertically propped against the positioning seat component 7, so that the lower end of the positioning seat component 7 is downwards contacted with the ground, and the position of the positioning seat component is fixed.
The fifth concrete implementation mode:
as shown in fig. 1-10, the positioning seat assembly 7 includes a T-shaped positioning block 7-1, a pressing frame 7-2, a lifting press block 7-3, a spring rod 7-4 and a compression spring 7-5; the T-shaped positioning block 7-1 is fixedly connected to the lower end of the pressing frame 7-2, the T-shaped positioning block 7-1 is arranged on the outer side of the outer box body 1, the middle end of the pressing frame 7-2 is fixedly connected with the lifting pressing block 7-3, and the lifting pressing block 7-3 is connected to the inner side of the vertical sliding chute 1-4 in a sliding fit manner; the spring rod 7-4 is connected to the lifting press block 7-3 in a sliding fit mode, the spring rod 7-4 is sleeved with the compression spring 7-5, the lower end of the spring rod 7-4 is fixedly connected to the bottom surface of the outer box body 1, and the compression spring 7-5 is arranged between the lifting press block 7-3 and the bottom surface of the outer box body 1; the rotary pressing plate 3-4 is blocked on the pressing frame 7-2. When the rotary pressing plate 3-4 on the inner side of the side box cover component 3 is used, when the side box cover body 3-1 is turned to be in the same plane with the top surface of the outer box body 1, the fixed shaft 3-2 drives the rotary pressing plate 3-4 to rotate, the rotary pressing plate 3-4 vertically abuts against the pressing frame 7-2, the pressing frame 7-2 drives the lifting pressing block 7-3 and the T-shaped positioning block 7-1 to move downwards, the T-shaped positioning block 7-1 is gradually contacted with the ground, the position of the lifting pressing block 7-3 is fixed, the lifting pressing block 7-3 compresses the compression spring 7-5 when moving downwards, and the whole positioning seat component 7 is convenient to reset under the elastic force of the compression spring 7-5 after the rotary pressing plate 3-4 is separated from the pressing frame 7-2.
The sixth specific implementation mode:
as shown in fig. 1-10, the pulley seat assembly 6 comprises a worm wheel 6-1, a bidirectional threaded rod 6-2, two rod frames 6-3, two push-pull sliding plates 6-4, two rear wheel frames 6-5, two side link rods 6-6, two front wheel frames 6-7 and eight traveling wheels 6-8; the worm wheel 6-1 is fixedly connected to the middle end of the bidirectional threaded rod 6-2, the bidirectional threaded rod 6-2 is rotatably connected to the two rod frames 6-3 through a bearing with a seat, the two rod frames 6-3 are fixedly connected to the outer box body 1, one ends of the two push-pull sliding plates 6-4 are symmetrically connected to the two ends of the bidirectional threaded rod 6-2 through threads respectively, the middle ends of the two push-pull sliding plates 6-4 are connected to the two rectangular sliding grooves 1-3 on the vertical plate of the L-shaped object placing plate 1-2 in a sliding fit mode respectively, the rear ends of the two push-pull sliding plates 6-4 are fixedly connected with one rear wheel frame 6-5 respectively, and the two rear wheel frames 6-5 are connected with one front wheel frame 6-7 through one connecting; the two rear wheel frames 6-5, the two side link frames 6-6 and the two front wheel frames 6-7 are all arranged on the outer sides of the outer box body 1 and the L-shaped object placing plates 1-2; the front wheel frame 6-7 and the rear wheel frame 6-5 are respectively connected with two traveling wheels 6-8 through wheel shafts; the worm wheel 6-1 is meshed with the worm 5-5. When the pulley seat assembly 6 is used, the worm wheel 6-1 is driven by the worm 5-5 to rotate, the worm wheel 6-1 drives the bidirectional threaded rod 6-2 to rotate, the bidirectional threaded rod 6-2 drives the two push-pull sliding plates 6-4 to move in opposite directions or move away from each other, when the invention is deformed and unfolded, the bidirectional threaded rod 6-2 drives the push-pull sliding plate 6-4 to do deviation movement, thereby driving the distance side length between the two rear wheel frames 6-5 through the two push-pull sliding plates 6-4, driving the two front wheel frames 6-7 to move through the connecting rods 6-6 respectively by the two rear wheel frames 6-5, so that the distance side length between the two front wheel frames 6-7 is convenient for better supporting the invention, the operating table or test bed formed by the two side cover assemblies 3 and the top surface of the outer box body 1 is more stable.
A coded lock is arranged on the door of the storage box body 8.
The working principle of the invention is as follows: when the medical instrument storage box is used, the drive control assembly 5 is communicated with a power supply and is started through the control switch, and then the drive control assembly 5 drives the lifting tray assembly 4 to lift upwards, so that common surgical instruments or other medical supplies can be placed conveniently; the driving control assembly 5 drives the two side tank cover assemblies 3 to turn outwards, so that the two side tank cover assemblies 3 are coplanar with the top surface of the outer box body 1, and a large operating table or a large test bed is formed for use; the lower end of the drive control assembly 5 drives the two ends of the pulley seat assembly 6 to perform outward expansion movement, so that the pulley seat assembly 6 can stably support an operating table or a test table formed by the two side tank cover assemblies 3 and the top surface of the outer box body 1, meanwhile, the positioning seat assembly 7 moves downwards under the drive of the two side tank cover assemblies 3, and the bottom end of the positioning seat assembly 7 is in contact with the ground, so that the position of the invention is fixed, and the invention is prevented from sliding; the inner side of the storage box body 8 is used for storing medical instruments; when the handle assembly 2 and the lifting tray assembly 4 are used, the external thread lifting rod 4-2 is driven by the driving control assembly 5 to ascend or descend, the external thread lifting rod 4-2 is provided with a guide sliding groove 4-3, the guide sliding groove 4-3 is matched with the limiting sliding block 2-2 for use, so that the external thread lifting rod 4-2 can perform lifting motion when the driving control assembly 5 works, the external thread lifting rod 4-2 drives the tray body 4-1 to perform lifting motion, and the inner side of the tray body 4-1 is used for placing medical instruments; when the driving control assembly 5 is used, after the driving motor 5-1 is communicated with a power supply and is started through the control switch, an output shaft of the driving motor 5-1 drives the driving gear 5-2 to rotate, the driving gear 5-2 drives the driven gear 5-3 to rotate, the driven gear 5-3 drives the driving rotating pipe 5-4 to rotate, the driving rotating pipe 5-4 drives the lifting connecting plate 5-6 to move up and down when rotating, and the lifting connecting plate 5-6 can drive the two side tank cover assemblies 3 to turn outwards and unfold or contract inwards and close inwards when moving up and down through the two short shafts 5-7; the driving rotating pipe 5-4 can also drive the external thread lifting rod 4-2 to ascend or descend when rotating; the driving rotating pipe 5-4 can also drive the worm 5-5 to rotate when rotating, and the worm 5-5 can drive two ends of the pulley seat assembly 6 to perform outward expansion movement or inward contraction movement when rotating, so that the pulley seat assembly 6 can stably support an operating table or a test table formed by the two side cover assemblies 3 and the top surface of the outer box body 1; when the side box cover component 3 is used, the lifting connecting plate 5-6 is driven to move up and down when the driving rotating pipe 5-4 rotates, and the two short shafts 5-7 can be driven to slide on the inner sides of the two sliding groove frames 3-3 of the two side box cover components 3 when the lifting connecting plate 5-6 moves up and down, so that the two side box cover bodies 3-1 are driven to turn over outwards to form a larger operating table or test bed for use, or contract inwards to form a medical instrument storage box convenient to carry and move for use; when the rotary pressing plate 3-4 on the inner side of the side box cover component 3 is used, when the side box cover body 3-1 is turned to be in the same plane with the top surface of the outer box body 1, the fixed shaft 3-2 drives the rotary pressing plate 3-4 to rotate, and the rotary pressing plate 3-4 is gradually and vertically propped against the positioning seat component 7, so that the lower end of the positioning seat component 7 is downwards contacted with the ground, and the position of the positioning seat component is fixed; when the rotary pressing plate 3-4 on the inner side of the side box cover component 3 is used, when the side box cover body 3-1 is turned to be in the same plane with the top surface of the outer box body 1, the fixed shaft 3-2 drives the rotary pressing plate 3-4 to rotate, the rotary pressing plate 3-4 vertically props against the pressing frame 7-2, the pressing frame 7-2 drives the lifting pressing block 7-3 and the T-shaped positioning block 7-1 to move downwards, the T-shaped positioning block 7-1 is gradually contacted with the ground, the position of the lifting pressing block is fixed, the lifting pressing block 7-3 compresses the compression spring 7-5 when moving downwards, and the whole positioning seat component 7 is convenient to reset under the elastic force of the compression spring 7-5 after the rotary pressing plate 3-4 is separated from the pressing frame 7-2; when the pulley seat assembly 6 is used, the worm wheel 6-1 is driven by the worm 5-5 to rotate, the worm wheel 6-1 drives the bidirectional threaded rod 6-2 to rotate, the bidirectional threaded rod 6-2 drives the two push-pull sliding plates 6-4 to move in opposite directions or move away from each other, when the invention is deformed and unfolded, the bidirectional threaded rod 6-2 drives the push-pull sliding plate 6-4 to do deviation movement, thereby driving the distance side length between the two rear wheel frames 6-5 through the two push-pull sliding plates 6-4, driving the two front wheel frames 6-7 to move through the connecting rods 6-6 respectively by the two rear wheel frames 6-5, so that the distance side length between the two front wheel frames 6-7 is convenient for better supporting the invention, the operating table or test bed formed by the two side cover assemblies 3 and the top surface of the outer box body 1 is more stable.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions and substitutions which are within the spirit and scope of the present invention and which may be made by those skilled in the art are also within the scope of the present invention.