Extensible box body with self-anchoring function

Abstract

The extensible box with the self-anchoring function comprises a base box and a plurality of sets of universal wheels used for supporting and moving on the base box, the base box is provided with a containing frame used for containing medical instruments, the base box is fixedly connected with an upper cavity frame, and the upper cavity frame is provided with an extension structure providing a working table top for the base box. The extension structure comprises two transverse extension assemblies arranged in the base box, each transverse extension assembly comprises a middle transverse plate which is driven by an electric push rod to freely move in the horizontal direction, and the middle transverse plate is provided with a torsion assembly which limits the swing direction of the crutch rod so as to drive the supporting leg part to make contact with the supporting face. Different working table top areas can be provided according to needs, the requirement for complex medical operation or equipment assembly can be met, a self-anchoring mechanism enables the box body to be kept stable all the time when medical instruments are assembled, debugged or prepared, and the box body is particularly suitable for uneven or irregular working environments.

Description

Technical Field

[0001] The invention relates to the technical field of boxes, in particular to an extendable box with a self-anchoring function. Background Art

[0002] Medical boxes usually refer to containers or equipment boxes required for storage, transportation, distribution of medical supplies, equipment, medicines and patient care during the construction and use of square cabin hospitals, tent hospitals or tent hospitals. These boxes have various forms and uses, and their specific functions vary according to the design and actual needs of square cabin hospitals and tent hospitals.

[0003] Chinese patent (Announcement No.: CN114869488A), the scheme specifically includes an inner box and an outer box; the inner box includes a storage box body, a cover plate and a limit mechanism; the storage box body is open on one side; one end of the cover plate is hinged to the upper end of the storage box body opening; the limit mechanism includes an arc plate, a limit rod and a limit spring; a cavity is provided on the storage box body; one end of the arc plate is slidably arranged in the cavity; the other end of the arc plate extends out of the cavity and is fixedly connected to the cover plate, and the center of the arc plate is set at the hinge between the cover plate and the storage box body; a limit groove is provided on the arc plate, one end of the limit rod is slidably arranged in the limit groove, and a limit spring is fixedly arranged; the other end of the limit rod can slide out of the limit groove; the outer box is open on one side; the inner box is arranged in the outer box, and the inner box is slidably connected to the outer box. A larger treatment table is formed by the cover plate and the upper end surface of the storage box body, and the required items can be taken out of the storage box body to perform small operations, bandages and medication on the wounded.

[0004] When existing medical boxes are used outdoors, especially in environments with limited space or irregular sites, such as cabin hospitals, tent hospitals, mobile laboratories, field operations, etc., the existing boxes are difficult to provide for operators who need an extendable and adjustable platform to meet different work needs. At the same time, the existing extendable platform often cannot automatically complete support and stability during the extension process, which causes the platform to easily tilt or shake during use. Therefore, an extendable box with a self-anchoring function is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an extendable box with a self-anchoring function, which has the advantages of expanding the usable area of ​​the work surface as needed and ensuring the stability of the work surface, thereby solving the problem that the existing extension platform often cannot automatically complete support and stability during the extension process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an extendable box with a self-anchoring function, comprising a base box and a plurality of universal wheels for supporting and moving the base box, the base box being provided with a storage frame for placing medical devices, the base box being fixedly connected with an upper cavity frame, the upper cavity frame being provided with an extension structure for providing a working surface for the base box;

[0007] The extension structure includes two sets of horizontal extension components arranged in the base box, and the horizontal extension components include a central horizontal position plate driven by an electric push rod to move freely in the horizontal direction, and the central horizontal position plate is provided with a positioning panel and a positioning panel for supporting the medical device;

[0008] The central horizontal plate is provided with a turning rod which is free to deflect in the vertical direction, the turning rod includes an integrally formed supporting leg portion, and the central horizontal plate is provided with a torsion component which limits the swinging direction of the turning rod to drive the supporting leg portion to contact the supporting surface;

[0009] The center horizontal plate is provided with a self-leveling component for adjusting the horizontal height of the positioning panel to drive the positioning panel and the upper surface of the upper cavity frame to be on the same horizontal plane. The base box includes an integrally formed lower purlin below, and multiple sets of universal wheels are all in the rectangular cavity of the lower purlin. A leveling component is provided on the lower purlin for changing the horizontal height of the base box according to the extension distance of the positioning panel.

[0010] Preferably, the positioning panel and the positioning panel are overlapped in the vertical direction, the positioning panel is located below the positioning panel, and the positioning panel and the positioning panel are rotationally connected via a rotating shaft.

[0011] Preferably, the torsion assembly comprises a V-shaped rod arranged on the middle horizontal plate, the turning rod is fixedly rotated on the middle horizontal plate, and the end of the turning rod away from the leg portion is fixedly rotated with a connecting rod, the middle part of the V-shaped rod is fixedly rotated on the middle horizontal plate, and the middle part of the V-shaped rod is coaxially fixed with the end of the connecting rod away from the turning rod;

[0012] The end of the connecting rod facing the V-shaped rod is hung and fixed with a tension spring, and the end of the tension spring away from the connecting rod is hung and fixed on the middle horizontal plate, and the bottom end of the V-shaped rod is in sliding contact with the upper surface of the base box.

[0013] Preferably, when the leg portion is in a vertical state, one end away from the central transverse plate is on the same horizontal plane as the lower surface of the lower purlin.

[0014] Preferably, the self-leveling assembly comprises a plurality of rocker arms arranged in a linear array between the central horizontal plate and the positioning panel, and the two ends of the plurality of rocker arms are respectively fixedly rotated on the central horizontal plate and the positioning panel;

[0015] The positioning panel is fixedly connected with a lateral sealing plate, the upper cavity frame is fixedly connected with a lateral semi-enclosing purlin, and the adjacent lateral sealing plates and lateral semi-enclosing purlins in the two groups of transverse extension components jointly block the side opening of the upper cavity frame.

[0016] Preferably, the self-leveling component also includes an oblique end block fixedly connected to the lower surface of the positioning panel, the oblique end block is located at the end of the positioning panel away from the lateral sealing plate, and a blocking block is fixedly connected to the inner wall of the upper cavity frame corresponding to the movement direction of the oblique end block.

[0017] Preferably, the leveling assembly includes a vertical rod that moves freely in the vertical direction, a rectangular slot for the vertical rod to slide through is provided on the base box, and a horizontal rod is fixedly connected to the bottom end of the vertical rod;

[0018] A group of branch rods are respectively arranged on the inner wall of the lower purlin corresponding to the positions of the multiple groups of universal wheels. The branch rods are fixedly rotated on the lower purlin, and the universal wheels are fixedly arranged on the branch rods. The horizontal rods are in abutment connection with the branch rods.

[0019] Preferably, the middle horizontal plate is fixedly connected to a vertical plate, one end of the vertical rod facing the vertical plate is fixedly connected to a positioning pin, and the vertical plate is provided with an upper horizontal groove, an oblique groove and a lower horizontal groove for the positioning pin to slide and connect;

[0020] The two ends of the oblique groove are respectively communicated with the upper transverse groove and the lower transverse groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention can provide different work surface areas as needed by setting an extension structure. When the central horizontal plate reaches the maximum horizontal stroke, the upper cavity frame and the two sets of positioning panels and the positioning panel together form a work surface with a larger area, which can meet the needs of complex medical operations or equipment assembly.

[0023] 2. The present invention provides a leveling component. When the work surface is expanded, the universal wheel can be driven to retract into the lower purlin and make the lower purlin contact the supporting surface, thereby avoiding the instability of the box caused by the universal wheel contacting the ground. This self-anchoring mechanism allows the box to remain stable during the assembly, debugging or preparation of medical equipment, and is particularly suitable for uneven or irregular working environments, such as field operations, cabin hospitals, tent hospitals, etc.

[0024] 3. The present invention provides a self-leveling component, through multiple sets of rocker arms and oblique end blocks, so that precise height adjustment can be achieved after the positioning panel is extended. The cooperation between the oblique end blocks and the blocking blocks ensures that the positioning panel can stop after reaching a predetermined height, avoiding tilting or instability of the work surface, and further ensuring that when the work surface is expanded to the maximum, gradient differences can be avoided on the surface, thereby ensuring flatness during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the components where the lateral sealing plate of the present invention is located;

[0027] Figure 3 It is a schematic diagram of the components where the horizontal plate is located in the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle;

[0030] Figure 6 It is a schematic diagram of the components where the vertical plate of the present invention is located;

[0031] Figure 7 It is a schematic diagram of the components where the swing rod of the present invention is located;

[0032] Figure 8 This is a schematic diagram of the components where the branch rod of the present invention is located;

[0033] Fig. 9 This is a schematic diagram of the initial state of the leg portion of the present invention;

[0034] Fig.10 It is a schematic diagram of the vertical state of the supporting leg portion of the present invention.

[0035] In the figure: 1. upper cavity frame; 2. base box; 3. center horizontal plate; 4. V-shaped rod; 5. connecting rod; 6. tension spring; 7. turning rod; 701. leg part; 8. positioning panel; 9. swing panel; 10. oblique end block; 11. blocking block; 12. swing rod; 13. vertical plate; 14. lateral semi-enclosing purlin; 15. positioning pin; 16. vertical rod; 17. upper horizontal groove; 18. oblique groove; 19. lower horizontal groove; 20. lateral sealing plate; 21. lower enclosing purlin; 22. universal wheel; 23. horizontal rod; 24. branch rod; 25. storage frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 10 The present invention provides a technical solution: an extendable box with a self-anchoring function, comprising a base box 2 and a plurality of universal wheels 22 thereon for supporting and moving, the base box 2 is provided with a storage frame 25 for placing medical devices, the base box 2 is fixedly connected with an upper cavity frame 1, and the upper cavity frame 1 is provided with an extension structure for providing a working surface for the base box 2;

[0038] The extension structure includes two sets of horizontal extension components arranged in the base box 2, and the horizontal extension components include a central horizontal position plate 3 driven by an electric push rod and freely moving in the horizontal direction, and a positioning panel 8 and a positioning panel 9 for supporting medical equipment are provided on the central horizontal position plate 3;

[0039] The central horizontal plate 3 is provided with a turning rod 7 which is free to deflect in the vertical direction, the turning rod 7 includes an integrally formed supporting leg portion 701, and the central horizontal plate 3 is provided with a torsion component which limits the swinging direction of the turning rod 7 to drive the supporting leg portion 701 to contact the supporting surface;

[0040] The center horizontal plate 3 is provided with a self-leveling component for adjusting the horizontal height of the positioning panel 8 to drive the positioning panel 8 to be at the same horizontal plane as the upper surface of the upper cavity frame 1. The base box 2 includes an integrally formed lower purlin 21 below, and multiple sets of universal wheels 22 are all in the rectangular cavity of the lower purlin 21. The lower purlin 21 is provided with a leveling component for changing the horizontal height of the base box 2 according to the extension distance of the positioning panel 8.

[0041] like Figure 1 , Figure 2 , Figure 3 and Fig.10 As shown, when medical equipment needs to be assembled, debugged or prepared, especially in environments with limited space or irregular sites such as square cabin hospitals, tent hospitals, mobile laboratories, and field operations, an additional work surface is provided for the operator through the extension structure, and the distance that the work surface extends out of the upper cavity frame 1 can be freely adjusted to meet different medical needs.

[0042] At the same time, the central horizontal plate 3 is driven to move in the horizontal direction by an electric push rod fixed on the upper cavity frame 1, which can then drive the positioning panel 8 and the positioning panel 9 arranged above the central horizontal plate 3 to move synchronously in the horizontal direction. The part of the positioning panel 8 and the positioning panel 9 extending out of the upper cavity frame 1 is the working surface range provided for the operator.

[0043] Among them, when the positioning panel 8 and the positioning panel 9 extend out of the upper cavity frame 1 and are about to be at the maximum distance, driven by the torsion component, the turning rod 7 can deflect a certain angle in the vertical direction, so that the integrally formed support leg part 701 thereon can swing on a fixed axis, and the support leg part 701 is in the internal chamber of the upper cavity frame 1 in the initial state, but as the positioning panel 8 and the positioning panel 9 gradually extend outward, the support leg part 701 can present a vertical state after deflection, so that the bottom end of the support leg part 701 contacts the supporting surface.

[0044] Furthermore, as the positioning panel 8 and the positioning panel 9 gradually extend outward, when the positioning panel 8 and the positioning panel 9 are completely extended out of the upper cavity frame 1, as the central horizontal plate 3 continues to move in the horizontal direction, driven by the self-leveling component, the positioning panel 8 and the positioning panel 9 will not continue to move synchronously with the central horizontal plate 3, but will move in the vertical direction with the horizontal movement of the central horizontal plate 3, thereby raising the horizontal height of the positioning panel 8 and the positioning panel 9, so as to drive the upper surfaces of the positioning panel 8 and the upper cavity frame 1 to be flush.

[0045] At the same time, as the positioning panel 8 and the placement panel 9 gradually extend out of the upper cavity frame 1, driven by the leveling component, the multiple sets of universal wheels 22 can be driven to retract into the lower purlin 21, so that the lower purlin 21 is in contact with the support surface, and the multiple sets of universal wheels 22 are no longer in contact with the support surface, and then in the process of gradual expansion of the work surface, the contact position with the support surface can be changed, thereby ensuring stability when performing medical preparation work on the work surface.

[0046] It should be noted that the positioning panel 8 and the positioning panel 9 are overlapped in the vertical direction, the positioning panel 8 is below the positioning panel 9, and the positioning panel 8 and the positioning panel 9 are rotatably connected via a rotating shaft. Therefore, when the positioning panel 8 and the positioning panel 9 are completely extended out of the upper cavity frame 1, the positioning panel 9 can be manually flipped over to change the horizontal position of the positioning panel 9, thereby converting the positioning panel 8 and the positioning panel 9 from an overlapping state to a parallel state. Since the positioning panel 8 is flush with the upper cavity frame 1, the upper surfaces of both the positioning panel 8 and the positioning panel 9 are flush with the upper surface of the upper cavity frame 1, thereby preventing the medical device or medical supplies from overturning due to height difference.

[0047] The extension assembly is provided with two sets of transverse extension assemblies. Driven by the two sets of transverse extension assemblies, the positioning panels 8 and the positioning panels 9 in the two sets of transverse extension assemblies move synchronously toward or away from each other in the horizontal direction. Then, when the middle transverse position plate 3 is at the horizontal maximum stroke terminal, the upper cavity frame 1 and the two sets of positioning panels 8 and the positioning panels 9 together form a horizontal working table (such as Fig.10 As shown), the work surface size reaches its maximum value at this time.

[0048] In one of the more preferred embodiments, the torsion assembly includes a V-shaped rod 4 arranged on the middle horizontal plate 3, a turning rod 7 is fixedly rotated on the middle horizontal plate 3, and a connecting rod 5 is fixedly rotated on one end of the turning rod 7 away from the leg portion 701, a middle part of the V-shaped rod 4 is fixedly rotated on the middle horizontal plate 3, and a middle part of the V-shaped rod 4 is coaxially fixed with an end of the connecting rod 5 away from the turning rod 7;

[0049] The end of the connecting rod 5 facing the V-shaped rod 4 is hung and fixed with a tension spring 6, and the end of the tension spring 6 away from the connecting rod 5 is hung and fixed on the central horizontal plate 3, and the bottom end of the V-shaped rod 4 is in sliding contact with the upper surface of the base box 2.

[0050] like Figure 2 , Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown, when the middle horizontal plate 3 moves horizontally under the drive of the electric push rod, the V-shaped rod 4, the connecting rod 5 and the turning rod 7 arranged thereon can be driven to move horizontally synchronously. In the initial state, the leg portion 701 is in the inner space of the upper cavity frame 1 (as shown in FIG. Fig. 9 As shown), and the lower surface of the V-shaped rod 4 is in sliding contact with the base box 2, as the central horizontal plate 3 drives the positioning panel 8 and the positioning panel 9 to gradually extend out of the upper cavity frame 1, the bottom end of the V-shaped rod 4 is no longer in contact with the base box 2, and is no longer restricted by the upper surface of the base box 2.

[0051] At the same time, when the V-shaped rod 4 is separated from the base box 2, driven by the tension spring 6, the V-shaped rod 4 can deflect in the vertical direction, thereby driving the connecting rod 5 to swing synchronously, and the end of the connecting rod 5 rotates on the crank 7 on a fixed axis, and then drives the crank 7 to swing in the vertical direction as the connecting rod 5 swings, so as to drive the support leg 701 to contact the supporting surface.

[0052] It should be noted that, when the support leg portion 701 is in a vertical state, the end away from the central horizontal plate 3 is on the same horizontal plane as the lower surface of the lower purlin 21. In actual use, as the positioning panel 8 gradually extends out of the upper cavity frame 1, driven by the leveling component, the universal wheel 22 that was originally in contact with the support surface is converted to the bottom of the lower purlin 21 in contact with the support surface, and then when the support leg portion 701 is deflected to a vertical state, the bottom of the support leg portion 701 is in synchronous contact with the support surface, so that the medical equipment and medical supplies thereon are jointly supported by multiple groups of support leg portions 701 and the lower purlin 21 to ensure the stability of the work surface.

[0053] Based on the torsion assembly embodiment, the self-leveling assembly includes a plurality of rocker arms 12 arranged in a linear array between the mid-directional horizontal plate 3 and the positioning panel 8, and the two ends of the plurality of rocker arms 12 are respectively fixedly rotated on the mid-directional horizontal plate 3 and the positioning panel 8;

[0054] The positioning panel 8 is fixedly connected with a lateral sealing plate 20 , and the upper cavity frame 1 is fixedly connected with a lateral semi-enclosing purlin 14 . The adjacent lateral sealing plates 20 and lateral semi-enclosing purlins 14 in the two groups of transverse extension components jointly block the side opening of the upper cavity frame 1 .

[0055] The self-leveling component also includes an oblique end block 10 fixedly connected to the lower surface of the positioning panel 8. The oblique end block 10 is located at the end of the positioning panel 8 away from the lateral sealing plate 20. The inner wall of the upper cavity frame 1 is fixedly connected with a blocking block 11 corresponding to the movement direction of the oblique end block 10.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, with the horizontal movement of the central horizontal plate 3, both the positioning panel 8 and the positioning panel 9 completely extend out of the upper cavity frame 1, and at this time, the oblique end block 10 conflicts with the blocking block 11 fixedly set on the upper cavity frame 1, and subsequently with the horizontal movement of the central horizontal plate 3, the positioning panel 8 cannot continue to move in the horizontal direction, and then the horizontal movement of the central horizontal plate 3 can drive multiple groups of rocker rods 12 to deflect synchronously, thereby changing the horizontal height of the positioning panel 8, and when the central horizontal plate 3 is at the terminal position of the horizontal movement stroke, the upper surface of the positioning panel 8 and the upper cavity frame 1 are flush, and subsequently, the positioning panel 9 can be flipped to drive the upper surfaces of the upper cavity frame 1, the positioning panel 8 and the positioning panel 9 to be at the same height, so as to avoid a gradient difference in the work surface, thereby ensuring its stability when supporting larger medical accessories or medical devices.

[0057] It should be noted that the rotating shaft arranged between the positioning panel 8 and the positioning panel 9 is a resistance rotating shaft, and a stop block is provided at the resistance rotating shaft to limit the angle between the positioning panel 8 and the positioning panel 9, thereby driving the positioning panel 9 to not further deflect after supporting the medical device.

[0058] Based on the self-leveling assembly embodiment, the leveling assembly includes a vertical rod 16 that moves freely in the vertical direction, a rectangular slot for the vertical rod 16 to slide through is provided on the base box 2, and a horizontal rod 23 is fixedly connected to the bottom end of the vertical rod 16;

[0059] A group of branch rods 24 are respectively arranged on the inner wall of the lower purlin 21 corresponding to the positions of the multiple groups of universal wheels 22. The branch rods 24 rotate on the lower purlin 21 with a fixed axis, and the universal wheels 22 are fixedly arranged on the branch rods 24. The horizontal rods 23 are in abutment connection with the branch rods 24.

[0060] The central horizontal plate 3 is fixedly connected with a vertical plate 13, and one end of the vertical rod 16 facing the vertical plate 13 is fixedly connected with a positioning pin 15. The vertical plate 13 is provided with an upper horizontal groove 17, an oblique groove 18 and a lower horizontal groove 19 for sliding connection of the positioning pin 15, and the two ends of the oblique groove 18 are respectively connected with the upper horizontal groove 17 and the lower horizontal groove 19.

[0061] like Figure 1 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, as the central transverse plate 3 moves in the horizontal direction, it can drive the vertical plate 13 fixed thereon to move horizontally synchronously, wherein a vertical rod 16 is slidably penetrated on the base box 2, and a positioning pin 15 fixedly arranged on the vertical rod 16 is slidably connected to the vertical plate 13 through an upper transverse groove 17, an oblique groove 18 and a lower transverse groove 19. When the central transverse plate 3 drives the positioning panel 8 and the positioning panel 9 to initially extend out of the upper cavity frame 1, its positioning pin 15 slides on the lower transverse groove 19, and then the height of the vertical rod 16 is at the lowest point at this time. wherein, when the vertical rod 16 is at the lowest horizontal point, the horizontal rod 23 fixedly arranged below the vertical rod 16 squeezes and contacts the branch rod 24, and drives the branch rod 24 to be in a horizontal state, and at this time the lower purlin 21 is suspended on the support surface, and the universal wheel 22 arranged on the branch rod 24 is in contact with the support surface, and at this time, the normal transportation function of the box can be ensured when an additional working surface is provided.

[0062] At the same time, as the center horizontal plate 3 continues to move in the horizontal direction, the positioning pin 15 slides on the oblique groove 18. At this time, when the positioning pin 15 and the vertical rod 16 move vertically upward, the horizontal rod 23 at the bottom of the vertical rod 16 can be driven to move upward gradually. It should be noted that a torsion spring is provided on the lower purlin 21 to drive the branch rod 24 to return to its initial position. The torsion spring is an existing device and a technical means well known to those skilled in the art, so it is not shown in the figure. In the initial state, the branch rod 24 is tilted upward, and then when the horizontal rod 23 moves upward with the vertical rod 16, the branch rod 24 gradually returns to its initial state, so that the universal wheel 22 gradually retracts into the rectangular cavity of the lower purlin 21 to drive the lower surface of the lower purlin 21 to contact the supporting surface.

[0063] Moreover, as the center horizontal plate 3 continues to move in the horizontal direction, the positioning pin 15 slides on the upper horizontal groove 17, and the horizontal height of the vertical rod 16 is at the maximum value. At this time, the lower purlin 21 is still in contact with the supporting surface. As the center horizontal plate 3 continues to move, the torsion assembly operates to drive the supporting leg portion 701 to be in a vertical state to jointly support the work surface, and the work surface can be on the same horizontal plane under the drive of the self-leveling assembly.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extendable box with a self-anchoring function, comprising a base box (2) and a plurality of universal wheels (22) thereon for supporting and moving, wherein a storage frame (25) for placing medical equipment is provided on the base box (2), characterized in that: The base box (2) is fixedly connected to an upper cavity frame (1), and the upper cavity frame (1) is provided with an extension structure for providing a working surface for the base box (2); The extension structure comprises two groups of transverse extension components arranged in a base box (2), the transverse extension components comprising a central transverse position plate (3) driven by an electric push rod and freely moving in a horizontal direction, and a positioning panel (8) and a positioning panel (9) for supporting medical equipment are provided on the central transverse position plate (3); The central transverse plate (3) is provided with a turning rod (7) that is free to deflect in the vertical direction, the turning rod (7) comprises an integrally formed supporting leg portion (701), and the central transverse plate (3) is provided with a torsion component that limits the swinging direction of the turning rod (7) so as to drive the supporting leg portion (701) to contact the supporting surface; The center horizontal plate (3) is provided with a self-leveling component for adjusting the horizontal height of the positioning panel (8) so as to drive the positioning panel (8) and the upper surface of the upper cavity frame (1) to be at the same horizontal plane. The base box (2) includes an integrally formed lower purlin (21) below, and a plurality of sets of universal wheels (22) are all located in the rectangular cavity of the lower purlin (21). The lower purlin (21) is provided with a leveling component for changing the horizontal height of the base box (2) according to the extension distance of the positioning panel (8).

2. The expandable box with self-anchoring function according to claim 1, characterized in that: The positioning panel (8) and the positioning panel (9) are arranged to overlap in the vertical direction, the positioning panel (8) is located below the positioning panel (9), and the positioning panel (8) and the positioning panel (9) are rotatably connected via a rotating shaft.

3. The expandable box with self-anchoring function according to claim 2, characterized in that: The torsion assembly comprises a V-shaped rod (4) arranged on the middle horizontal plate (3), a crank rod (7) is fixedly rotated on the middle horizontal plate (3), and a connecting rod (5) is fixedly rotated on one end of the crank rod (7) away from the leg portion (701), the middle part of the V-shaped rod (4) is fixedly rotated on the middle horizontal plate (3), and the middle part of the V-shaped rod (4) is coaxially fixed with the end of the connecting rod (5) away from the crank rod (7); The end of the connecting rod (5) facing the V-shaped rod (4) is hung and fixed with a tension spring (6), and the end of the tension spring (6) away from the connecting rod (5) is hung and fixed on the central horizontal plate (3), and the bottom end of the V-shaped rod (4) is in sliding contact with the upper surface of the base box (2).

4. The expandable box with self-anchoring function according to claim 3, characterized in that: When the supporting leg portion (701) is in a vertical state, the end away from the central transverse plate (3) is on the same horizontal plane as the lower surface of the lower purlin (21).

5. The expandable box with self-anchoring function according to claim 4, characterized in that: The self-leveling assembly comprises a plurality of rocker arms (12) arranged in a linear array between the central horizontal plate (3) and the positioning panel (8), and the two ends of the plurality of rocker arms (12) are respectively fixedly rotated on the central horizontal plate (3) and the positioning panel (8); The positioning panel (8) is fixedly connected with a lateral sealing plate (20), and the upper cavity frame (1) is fixedly connected with a lateral semi-enclosing purlin (14). The adjacent lateral sealing plates (20) and lateral semi-enclosing purlins (14) in the two groups of transverse extension components jointly block the side opening of the upper cavity frame (1).

6. The expandable box with self-anchoring function according to claim 5, characterized in that: The self-leveling component further comprises an oblique end block (10) fixedly connected to the lower surface of the positioning panel (8), the oblique end block (10) being located at an end of the positioning panel (8) away from the lateral sealing plate (20), and a blocking block (11) being fixedly connected to the inner wall of the upper cavity frame (1) corresponding to the movement direction of the oblique end block (10).

7. The expandable box with self-anchoring function according to claim 6, characterized in that: The leveling assembly comprises a vertical rod (16) that can move freely in the vertical direction, a rectangular groove is provided on the base box (2) for the vertical rod (16) to slide through, and a horizontal rod (23) is fixedly connected to the bottom end of the vertical rod (16); A group of branch rods (24) are respectively arranged on the inner wall of the lower purlin (21) at positions corresponding to the plurality of groups of universal wheels (22); the branch rods (24) are fixedly rotated on the lower purlin (21); the universal wheels (22) are fixedly arranged on the branch rods (24); and the horizontal rods (23) are in abutting connection with the branch rods (24).

8. The expandable box with self-anchoring function according to claim 7, characterized in that: The middle horizontal plate (3) is fixedly connected to a vertical plate (13); one end of the vertical rod (16) facing the vertical plate (13) is fixedly connected to a positioning pin (15); and the vertical plate (13) is provided with an upper horizontal groove (17), an oblique groove (18) and a lower horizontal groove (19) for sliding connection of the positioning pin (15); The two ends of the oblique groove (18) are respectively communicated with the upper transverse groove (17) and the lower transverse groove (19).

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