CN219071379U - Surgical instrument disinfection device - Google Patents

Abstract

The utility model relates to the technical field of medical instruments, in particular to a surgical instrument sterilizing device which comprises a sterilizing box body, a box door and a surgical instrument placing vehicle, wherein the sterilizing box body is of a square structure with an opening at the front end, the bottom of the opening at the front end of the sterilizing box body is hinged with the rear side of the bottom end of the box door, and two sides below the rear wall of the box door are hinged with two sides of the inner wall of the sterilizing box body through connecting rod mechanisms; the surgical instrument placing vehicle comprises a base and rollers, wherein the rollers are respectively arranged at the front end and the rear end of two sides of the base, and wheel grooves for rolling the rollers are respectively formed in two sides of the bottom of an inner cavity of the sterilizing box body and two sides of the rear wall of the box door. The sterilizing box body can move on the bottom of the inner cavity of the sterilizing box body and the wheel groove on the rear wall of the box door through the roller, so that medical staff can more conveniently place the cleaned and packaged surgical instruments on a surgical instrument placing vehicle or take out the sterilized surgical instruments.

Description

Surgical instrument disinfection device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a surgical instrument disinfection device.

Background

The surgical instrument sterilizing cabinet is a tool for sterilizing, preserving heat and dehumidifying articles such as medical instruments, special surgical equipment, towels, clothes, tableware, medical facilities and the like by means of ultraviolet rays, far infrared rays, high temperature (high temperature sterilization through heating pipes), ozone and the like. At present, after the used surgical instruments are cleaned and packed by medical staff, the packed surgical instruments are required to be placed on a placing frame of a sterilizing cabinet for sterilizing, but the placing frame is positioned in the sterilizing cabinet, so that the placing of the packed surgical instruments is inconvenient; in addition, some disinfection cabinets have the track can be pulled out the rack by the disinfection cabinet to place packaged surgical instruments, but can produce the removal at the in-process rack of placing, influence medical personnel's work efficiency.

It is for this reason that the present utility model has devised a surgical instrument disinfection device.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and adapt to the actual needs, and provides a surgical instrument sterilizing device, wherein a sterilizing box body can move through rollers on the bottom of an inner cavity of the sterilizing box body and a wheel groove on the rear wall of a box door, so that medical staff can more conveniently place the surgical instrument after cleaning and packaging on a surgical instrument placing vehicle or take out the surgical instrument after sterilizing.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

a surgical instrument sterilizing device is designed, which comprises a sterilizing box body, a box door and a surgical instrument placing vehicle,

the disinfection box body is of a square structure with an opening at the front end, a plurality of ultraviolet disinfection lamps are arranged on the rear wall of the inner cavity of the disinfection box body at intervals along the vertical direction, and an ozone generator is arranged above the inner wall of the disinfection box body;

the bottom of the front end opening of the sterilizing box body is hinged with the rear side of the bottom end of the box door, and two sides below the rear wall of the box door are hinged with two sides of the inner wall of the sterilizing box body through a connecting rod mechanism;

the surgical instrument placing vehicle comprises a base and rollers, wherein the rollers are respectively arranged at the front end and the rear end of two sides of the base, and wheel grooves for rolling the rollers are respectively formed in two sides of the bottom of an inner cavity of the sterilizing box body and two sides of the rear wall of the box door.

The connecting rod mechanism comprises a first connecting rod, a second connecting rod, a first hinging seat and a second hinging seat, wherein the first hinging seat is fixed on the inner walls of two sides of the sterilizing box body, the second hinging seat is fixed on two sides of the rear wall of the box door, the top end of the first connecting rod is hinged with the first hinging seat, the bottom end of the first connecting rod is hinged with the top end of the second connecting rod, and the bottom end of the second connecting rod is hinged with the second hinging seat.

The bottom surface of the inner cavity of the disinfection box body is an inclined surface with the height gradually reduced from the open end to the closed end; when the first connecting rod and the second connecting rod are collinear, the upper surface of the box door is coplanar with the inclined plane.

And limiting holes are formed in the front side and the rear side of the inner wall of the disinfection box body, and a limiting mechanism matched and clamped with the limiting holes is arranged in the base.

The limiting mechanism comprises a limiting rod, a connecting rod, a compression spring, a driving block, a driving rod and a clamping block, wherein the outer diameter of the limiting rod is not larger than the inner diameter of the limiting hole, and a limiting groove for inserting the limiting rod is formed in the inner end side wall of the base; a square groove for placing a driving block is formed in the base, a connecting hole for the connecting rod to pass through is formed between the side wall of the square groove and the limiting groove, the inner end of the limiting rod is connected with the outer end of the connecting rod, the compression spring is sleeved outside the connecting rod, the outer end of the compression spring is in contact with the inner end of the limiting rod, and the inner end of the compression spring is in contact with the inner end wall of the limiting groove; the inner end of the connecting rod is connected with the side wall of the driving block, and an inclined hole is formed in the surface of the driving block; the driving device is characterized in that a driving hole used for the driving rod to pass through is formed in the front wall of the square groove, the upper part and the lower part of the inner end of the driving rod are respectively connected with the clamping blocks, a gap between the two clamping blocks is not smaller than the thickness of the driving blocks, a pin shaft is arranged in the middle of each clamping block along the vertical direction, and the outer diameter of the pin shaft is not larger than the width of the inclined hole.

The included angle between the length direction of the inclined hole and the axis of the connecting rod is 45 degrees.

The front end terminal surface middle part of base is equipped with the handle, the handle is square structure, and its middle part is equipped with the finger hole that is used for the finger to pass, the handle is located the right side of actuating lever.

The base comprises an upper base and a lower base, a semi-cylindrical upper limit groove, an upper connecting hole and an upper driving hole are formed in the bottom of the upper base, a semi-cylindrical lower limit groove, an upper connecting hole and an upper driving hole are formed in the top of the lower base, and the upper base and the lower base are fixedly connected through bolts on four corners.

Rubber buffer blocks in ring shape are arranged on two sides of the end face of the rear end of the lower base.

The top of the upper base is provided with a placing bracket, the placing bracket comprises a main supporting block, a U-shaped rod, a supporting rod, a transverse rod and a longitudinal rod, and the bottoms of the two main supporting blocks are respectively connected with the middle parts of the two sides of the top of the upper base; the U-shaped rod is of an inverted U-shaped structure consisting of a cross rod, a front vertical rod and a rear vertical rod, the middle part of the cross rod is fixed at the top of the main supporting block, the bottom ends of the front vertical rod and the rear vertical rod are respectively connected with the front end and the rear end of the top of the upper base, four supporting rods which form a square frame structure are connected between the front vertical rod and the rear vertical rod on two sides, and a plurality of transverse rods and longitudinal rods are connected between the supporting rods at equal intervals.

The utility model has the beneficial effects that:

1. the sterilizing box body can move on the bottom of the inner cavity of the sterilizing box body and the wheel groove on the rear wall of the box door through the roller, so that medical staff can more conveniently place the cleaned and packaged surgical instruments on a surgical instrument placing vehicle or take out the sterilized surgical instruments;

2. according to the utility model, the limiting mechanism is arranged to be in limiting clamping with the limiting holes on the front side and the rear side of the inner wall of the disinfection box body, so that the surgical instrument placing vehicle can be prevented from moving when surgical instruments are placed, and the surgical instrument placing vehicle can not move accidentally when the surgical instrument placing vehicle is disinfected in the disinfection box body;

3. according to the utility model, the handle is arranged on the right side of the driving rod, so that the unlocking of the driving rod and the limiting hole and the pulling-out or pushing-in of the surgical instrument placing vehicle into the disinfection box body can be completed by one hand.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a limiting mechanism according to the present utility model;

fig. 4 is a schematic view of a part of the structure of the present utility model.

In the figure, a sterilizing box body, a box door 2, a surgical instrument placing vehicle 3, an ultraviolet sterilizing lamp 4, an ozone generator 5, a connecting rod mechanism 6, a limiting hole 7, a limiting mechanism 8, a placing bracket 9, a rubber buffer block 10, an inclined surface 11, an inclined hole 12, a base 31, an upper base 311, a lower base 312, a roller 32, a wheel groove 33, a handle 34, a first connecting rod 61, a second connecting rod 62, a first hinging seat 63, a second hinging seat 64, a limiting rod 81, a connecting rod 82, a compression spring 83, a driving block 84, a driving rod 85, a clamping block 86, a limiting groove 87, a square groove 88, a driving hole 89, a pin shaft 90, a main supporting block 91, a U-shaped 92 rod 93, a supporting rod 94, a longitudinal 95, a transverse rod 921, a front vertical rod 922, a rear vertical rod 923.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

examples: a surgical instrument sterilizing device, see figures 1-4,

the design comprises a sterilizing box body 1, a box door 2 and a surgical instrument placing vehicle 3, wherein the sterilizing box body 1 is of a square structure with an opening at the front end, a plurality of ultraviolet sterilizing lamps 4 are arranged on the rear wall of an inner cavity of the sterilizing box body at intervals along the vertical direction, an ozone generator 5 is arranged above the inner wall of the sterilizing box body 1, and the sterilizing effect of surgical instruments is improved by simultaneously sterilizing the ultraviolet sterilizing lamps 4 and the ozone generator 5;

the bottom of the opening at the front end of the sterilizing box body 1 is hinged with the rear side of the bottom end of the box door 2, two sides below the rear wall of the box door 2 are hinged with two sides of the inner wall of the sterilizing box body 1 through a connecting rod mechanism 6, and the opening angle of the box door 2 is controlled through the connecting rod mechanism 6, so that the rear wall of the opened box door 2 is coplanar with the bottom surface of the inner cavity of the sterilizing box body 1; the surgical instrument placing vehicle 3 comprises a base 31 and rollers 32, the front end and the rear end of two sides of the base 31 are respectively provided with the rollers 32, the two sides of the bottom of the inner cavity of the sterilizing box body 1 and the two sides of the rear wall of the box door 2 are respectively provided with a roller groove 33 used for the rollers 32 to roll, the sterilizing box body 1 can move on the roller grooves 33 on the bottom of the inner cavity of the sterilizing box body 1 and the rear wall of the box door 2 through the rollers 32, so that medical staff can place the cleaned and packaged surgical instruments on the surgical instrument placing vehicle 3 more conveniently, or take out the sterilized surgical instruments,

further, the link mechanism 6 includes a first link 61, a second link 62, a first hinge seat 63 and a second hinge seat 64, the first hinge seat 63 is fixed at a position where front ends of inner walls of both sides of the sterilization case 1 are biased upward, the second hinge seat 64 is fixed at both sides of a rear wall of the case door 2 near a lower end, a top end of the first link 61 is hinged with the first hinge seat 63, a bottom end of the second link 62 is hinged with a top end of the second link 62, when the case door 2 is opened, when the first link 61 and the second link 62 are collinear, a tensile force can be given to the case door 2, a connection strength between the case door 2 and the sterilization case 1 is improved, and an opening angle of the case door 2 is controlled, so that the surgical instrument placing vehicle 3 can roll along the case door 2 and the wheel groove 33 at the bottom of the sterilization case 1.

Further, the bottom surface of the inner cavity of the sterilizing box body 1 is an inclined surface 11 with the height gradually reduced from the opening end to the closed end, the included angle between the inclined surface 11 and the horizontal direction is about 2 degrees, and the situation that the surgical instrument placing vehicle 3 is separated from the wheel groove 33 due to the excessively high speed when being pulled out from the sterilizing box body 1 is avoided by setting a smaller inclined angle; meanwhile, medical staff can conveniently push the surgical instrument placing vehicle 3 into the sterilizing box body 1; when the first connecting rod 61 and the second connecting rod 62 are collinear, the upper surface of the box door 2 is coplanar with the inclined plane 11, so that the wheel groove 33 at the bottom of the sterilizing box body 1 and the wheel groove 33 on the rear wall of the box door 2 can be well connected, and the surgical instrument placing vehicle 3 can stably move into the sterilizing box body 1 or move onto the rear wall of the opened box door 2 through the idler wheels 32.

Further, the front side and the rear side of the inner wall of the sterilizing box body 1 are respectively provided with a limiting hole 7, a limiting mechanism 8 which is matched and clamped with the limiting holes 7 is arranged in the base 31, and the limiting holes 7 on the front side of the inner wall are convenient for medical staff to pull out the surgical instrument placing vehicle when the surgical instrument after cleaning and packaging is ready to be installed on the surgical instrument placing vehicle 3, so that the limiting mechanism 8 on the surgical instrument placing vehicle is clamped and limited with the limiting holes 7 on the front side of the inner wall, and the surgical instrument placing vehicle 3 can be prevented from moving when the surgical instrument is placed; after the surgical instruments are placed, medical staff pushes the surgical instruments placing trolley 3 into the disinfection box body 1, and the limiting mechanism 8 on the surgical instruments placing trolley 3 is in limiting clamping with the limiting hole 7 on the rear side of the inner wall, so that the surgical instruments placing trolley 3 cannot accidentally move when being disinfected in the disinfection box body 1.

Further, the limit mechanism 8 comprises a limit rod 81, a connecting rod 82, a compression spring 83, a driving block 84, a driving rod 85 and a clamping block 86, wherein the outer diameter of the limit rod 81 is not larger than the inner diameter of the limit hole 7, and a limit groove 87 for inserting the limit rod 81 is formed in the inner end side wall of the base 31; a square groove 88 for placing the driving block 84 is arranged in the base 31, a connecting hole for the connecting rod 82 to pass through is arranged between the side wall of the square groove 88 and the limiting groove 87, the inner end of the limiting rod 81 is connected with the outer end of the connecting rod 82, the compression spring 83 is sleeved outside the connecting rod 82, the outer end of the compression spring 83 is contacted with the inner end of the limiting rod 81, and the inner end of the compression spring 83 is contacted with the inner end wall of the limiting groove 87; the inner end of the connecting rod 82 is connected with the side wall of the driving block 84, and the surface of the driving block 84 is provided with an inclined hole 12; the front wall of the square groove 88 is provided with a driving hole 89 for the driving rod 85 to pass through, the upper part and the lower part of the inner end of the driving rod 85 are respectively connected with the clamping blocks 86, the gap between the two clamping blocks 86 is not smaller than the thickness of the driving block 84, the middle part of the clamping block 86 is provided with a pin shaft 90 along the vertical direction, the outer diameter of the pin shaft 90 is not larger than the width of the inclined hole 12, when in use, when a medical staff presses the outer end of the driving rod 85, the clamping block 86 and the pin shaft 90 are driven to move towards the rear end, the movement of the pin shaft 90 towards the rear end can be converted into the movement of the driving block 84 towards the right end through the inclined hole 12, the driving block 84 drives the connecting rod 82 and the limiting rod 81 to move towards the right end, and the contact limiting clamping of the limiting rod 81 and the limiting hole 7 is completed; when the medical staff no longer presses the driving rod 85, the limiting rod 81 stretches out to the outer end to be in limiting clamping with the limiting hole 7 due to the resetting effect of the compression spring 83.

Further, the included angle between the length direction of the inclined hole 12 and the axis of the connecting rod 82 is 45 °, so that the displacement of the driving rod 85 can be obtained more conveniently, and the displacement generated by the limiting rod 81 can be driven.

Further, a handle 34 is arranged in the middle of the front end face of the base 31, and the medical staff can conveniently pull out or push the surgical instrument placing trolley 3 into the sterilizing box body 1 by arranging the handle 34; preferably, the handle 34 is in a square structure, a finger hole for a finger to pass through is formed in the middle of the handle 34, the handle 34 is positioned on the right side of the driving rod 85, and when the handle is used, a medical staff places a thumb on the outer end face of the driving rod 85 and is used for pressing the driving rod 85 to unlock the limiting mechanism 8; in addition, four fingers penetrate through the finger holes to pull out or push in the surgical instrument placing vehicle 3, and the two steps can be completed by one hand, so that the surgical instrument placing vehicle is quite convenient.

Further, the base 31 includes an upper base 311 and a lower base 312, an upper limit groove, an upper connection hole and an upper driving hole which are semi-cylindrical are arranged at the bottom of the upper base 311, a lower limit groove, an upper connection hole and an upper driving hole which are semi-cylindrical are arranged at the top of the lower base 312, and the upper base 311 and the lower base 312 are fixedly connected through bolts at four corners, so that the installation and the disassembly of the limit mechanism 8 are facilitated.

Further, the two sides of the end face of the rear end of the lower base 312 are provided with the annular rubber buffer blocks 10, and the base 31 is prevented from directly colliding with the rear wall of the inner cavity of the sterilizing box body 1 by the arrangement of the rubber buffer blocks 10.

Further, a placement bracket 9 is arranged at the top of the upper base 311, the placement bracket 9 comprises a main supporting block 91, a U-shaped rod 92, a supporting rod 93, a transverse rod 94 and a longitudinal rod 95, and the bottoms of the two main supporting blocks 91 are respectively connected with the middle of two sides of the top of the upper base 311; the U-shaped rod 92 is of an inverted U-shaped structure composed of a cross rod 921, a front vertical rod 922 and a rear vertical rod 923, the middle part of the cross rod 921 is fixed at the top of the main support block 91, the bottom ends of the front vertical rod 922 and the rear vertical rod 923 are respectively connected with the front end and the rear end of the top base 311, four support rods 93 which form a square frame structure are connected between the front vertical rod 922 and the rear vertical rod 923 on two sides, a plurality of transverse rods 94 and longitudinal rods 95 are connected between the support rods 93 at equal intervals, and the placement support 9 can be layered in the vertical direction through the square frame-shaped support rods 93, so that the space utilization rate of the placement support 9 is improved, and more surgical instruments are placed in the placement support 9 for sterilization; by the net structure of the transverse rods 94 and the longitudinal rods 95, the surgical instruments can be placed without affecting sterilization.

The working process comprises the following steps: after the surgical instruments are cleaned and packed, a medical staff opens the box door 2, presses the driving rod 85 with the thumb to unlock the limiting rod 81 and the limiting hole 7 at the rear side of the inner wall of the sterilizing box body 1, simultaneously, four other fingers pull the surgical instrument placing cart 3 outwards along the wheel groove 33 through the handle 34, and when the limiting rod 81 moves to the limiting hole 7 at the front side of the inner wall of the sterilizing box body 1, the limiting rod 81 pops up and is in limiting clamping with the limiting hole 7 due to the resetting action of the compression spring 83, and the medical staff places the packed surgical instruments in the placing bracket 9 at the moment;

after the surgical instruments are placed, medical staff presses the driving rod 85 again to unlock the limiting rod 81 and the limiting hole 7 on the front side of the inner wall of the sterilizing box body 1, then the surgical instruments placing trolley 3 is pushed into the sterilizing box body 1 through the handle 34 and the inclined plane 11 on the bottom of the sterilizing box body 1, when the limiting rod 81 moves to the limiting hole 7 on the rear side of the inner wall of the sterilizing box body 1, the limiting rod 81 pops out again to be in limiting engagement with the limiting rod 81, and finally the medical staff closes the box door 2 for sterilizing.

The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present utility model.

Claims (10)

1. A surgical instrument disinfection apparatus, characterized in that: comprises a sterilizing box body (1), a box door (2) and a surgical instrument placing vehicle (3),

the disinfection box body (1) is of a square structure with an opening at the front end, a plurality of ultraviolet disinfection lamps (4) are arranged on the rear wall of the inner cavity of the disinfection box body at intervals along the vertical direction, and an ozone generator (5) is arranged above the inner wall of the disinfection box body (1);

the bottom of the front end opening of the disinfection box body (1) is hinged with the rear side of the bottom end of the box door (2), and two sides below the rear wall of the box door (2) are hinged with two sides of the inner wall of the disinfection box body (1) through a connecting rod mechanism (6);

the surgical instrument placing vehicle (3) comprises a base (31) and rollers (32), the front ends and the rear ends of the two sides of the base (31) are respectively provided with the rollers (32), and wheel grooves (33) for rolling the rollers (32) are formed in the two sides of the bottom of an inner cavity of the sterilizing box body (1) and the two sides of the rear wall of the box door (2).

2. A surgical instrument sterilization apparatus according to claim 1, wherein: the connecting rod mechanism (6) comprises a first connecting rod (61), a second connecting rod (62), a first hinging seat (63) and a second hinging seat (64), wherein the first hinging seat (63) is fixed on the inner walls of two sides of the sterilizing box body (1), the second hinging seat (64) is fixed on two sides of the rear wall of the box door (2), the top end of the first connecting rod (61) is hinged with the first hinging seat (63), the bottom end of the first connecting rod is hinged with the top end of the second connecting rod (62), and the bottom end of the second connecting rod (62) is hinged with the second hinging seat (64).

3. A surgical instrument sterilization apparatus according to claim 2, wherein: the bottom surface of the inner cavity of the disinfection box body (1) is an inclined surface (11) with the height gradually reduced from the open end to the closed end; when the first connecting rod (61) and the second connecting rod (62) are collinear, the upper surface of the box door (2) is coplanar with the inclined plane (11).

4. A surgical instrument sterilization apparatus according to claim 3, wherein: the disinfection box is characterized in that limiting holes (7) are formed in the front side of the inner wall and the rear side of the inner wall of the disinfection box body (1), and a limiting mechanism (8) matched and clamped with the limiting holes (7) is arranged in the base (31).

5. A surgical instrument sterilization apparatus according to claim 4, wherein: the limiting mechanism (8) comprises a limiting rod (81), a connecting rod (82), a compression spring (83), a driving block (84), a driving rod (85) and a clamping block (86), wherein the outer diameter of the limiting rod (81) is not larger than the inner diameter of the limiting hole (7), and a limiting groove (87) for inserting the limiting rod (81) is formed in the inner end side wall of the base (31); a square groove (88) for placing a driving block (84) is formed in the base (31), a connecting hole for the connecting rod (82) to pass through is formed between the side wall of the square groove (88) and the limiting groove (87), the inner end of the limiting rod (81) is connected with the outer end of the connecting rod (82), the compression spring (83) is sleeved outside the connecting rod (82), the outer end of the compression spring (83) is in contact with the inner end of the limiting rod (81), and the inner end of the compression spring (83) is in contact with the inner end wall of the limiting groove (87); the inner end of the connecting rod (82) is connected with the side wall of the driving block (84), and an inclined hole (12) is formed in the surface of the driving block (84); be equipped with on the front wall of square groove (88) and be used for actuating lever (85) pass drive hole (89), interior upper and the below of actuating lever (85) are connected with respectively grip block (86), and the clearance between two grip blocks (86) is not less than thickness of drive block (84), the middle part of grip block (86) is equipped with round pin axle (90) along vertical direction, the external diameter of round pin axle (90) is not more than the width of inclined hole (12).

6. A surgical instrument sterilization apparatus according to claim 5, wherein: the included angle between the length direction of the inclined hole (12) and the axis of the connecting rod (82) is 45 degrees.

7. A surgical instrument sterilization apparatus according to claim 6, wherein: the middle part of the front end face of the base (31) is provided with a handle (34), the handle (34) is of a square structure, the middle part of the handle is provided with a finger hole for a finger to pass through, and the handle (34) is positioned on the right side of the driving rod (85).

8. A surgical instrument sterilization apparatus according to claim 7, wherein: the base (31) comprises an upper base (311) and a lower base (312), a semi-cylindrical upper limit groove, an upper connecting hole and an upper driving hole are formed in the bottom of the upper base (311), a semi-cylindrical lower limit groove, an upper connecting hole and an upper driving hole are formed in the top of the lower base (312), and the upper base (311) and the lower base (312) are fixedly connected through bolts at four corners.

9. A surgical instrument sterilization apparatus according to claim 8, wherein: rubber buffer blocks (10) which are circular rings are arranged on two sides of the end face of the rear end of the lower base (312).

10. A surgical instrument sterilization apparatus according to claim 9, wherein: the top of the upper base (311) is provided with a placement bracket (9), the placement bracket (9) comprises a main supporting block (91), a U-shaped rod (92), a supporting rod (93), a transverse rod (94) and a longitudinal rod (95), and the bottoms of the two main supporting blocks (91) are respectively connected with the middle of the two sides of the top of the upper base (311); the U-shaped rod (92) is of an inverted U-shaped structure consisting of a cross rod (921), a front vertical rod (922) and a rear vertical rod (923), the middle of the cross rod (921) is fixed at the top of the main supporting block (91), the bottoms of the front vertical rod (922) and the rear vertical rod (923) are respectively connected with the front end and the rear end of the top base (311), four supporting rods (93) which form a square frame structure are connected between the front vertical rod (922) and the rear vertical rod (923) on two sides, and a plurality of transverse rods (94) and longitudinal rods (95) are connected between the supporting rods (93) at equal intervals.

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