Special dressing change cart for nursing in burn department and facilitating material taking

Abstract

The invention discloses a dressing change cart special for nursing in the burn department and facilitating material taking, and belongs to the field of medical instruments. Comprising a vehicle body, a movable cavity is integrally formed in the lower portion of the interior of the vehicle body, a plurality of steering columns are rotationally connected to the lower surface of the interior of the movable cavity through rotating shafts, L-shaped wheel seats are fixedly connected to the positions, located below the vehicle body, of the bottoms of the steering columns, and shaft columns are rotationally connected to the inner sides of the L-shaped wheel seats through rotating shafts; moving wheels are fixedly connected to the opposite ends of the two shaft columns which are opposite front and back, and the ends, away from the moving wheels, of the shaft columns penetrate to the outer sides of the L-shaped wheel bases and are fixedly connected with cams. The vehicle body can flexibly move through the multiple arranged moving wheels, so that moving is more convenient, repeated exhaust is needed in the moving process of the moving wheels, and when the multiple moving wheels need to be locked at the moment, locking of the multiple moving wheels can be achieved only by rotating sealing columns to enable butt joint holes to be staggered with first exhaust holes and second exhaust holes.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a special dressing changing vehicle for burn department nursing which is convenient for taking out materials. Background Art

[0002] Burns generally refer to tissue damage caused by heat, including hot liquids, steam, high-temperature gases, flames, hot metal liquids or solids, etc., mainly skin and / or mucous membranes. In severe cases, subcutaneous and / or submucosal tissues such as muscles, bones, joints and even internal organs may also be injured. Scalds are tissue damage caused by hot liquids, steam, etc., and are a type of thermal burns. When changing the dressings of patients in the burn department, doctors and nurses are required to change the dressings for the patients in the ward because the patients cannot move. The special dressing change cart for burn department nursing is a medical device used to assist in dressing changes; Patent: CN213788491U discloses a special dressing change cart for burn department nursing, including a car body, a groove, a storage box, a medicine groove and a slide. The slide is movably connected inside, and one end of the slide is fixedly connected to the medicine box. A disinfection cabinet groove is provided on one side of the car body, and a disinfection cabinet is arranged inside the disinfection cabinet groove. A water pump groove is provided on one side of the car body, and a water pump, a disinfectant bucket and a waste water bucket are arranged inside the water pump groove from left to right. The main advantage of this device is that it provides a special dressing change cart for burn department nursing, some medicines for burns can be placed in the medicine box, and some medical instruments for burns can be placed in the groove. Medical staff can quickly push the cart to the patient's bedside, and medical staff can use the medicines and medical instruments placed in the car to perform dressing change care for the patient, which reduces the burden on medical staff, reduces the waiting time of the injured, and improves the work efficiency of medical staff; During the use of the dressing change cart in the above technology, it is moved by means of multiple universal wheels. When the device needs to stop, it is necessary to lock it by controlling the built-in brake pads on the universal wheels. Moreover, locking a single universal wheel cannot ensure the stable parking of the device. The multiple brake pads on multiple universal wheels are controlled to be locked in turn. This process wastes time and is likely to affect the medication process and aggravate the effects of burns on patients. In addition, the handlebars in the above technology cannot be adjusted in height, which makes it inconvenient for medical staff of different heights or different usage habits to hold it in their hands. Therefore, improvement is needed. For this reason, we have proposed a dressing change cart specifically for burn department nursing that is convenient for taking materials. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a method for simultaneously controlling the locking of multiple moving wheels, thereby achieving a stable parking effect of the device; another purpose of the present invention is to provide a method for controlling the handle height to facilitate use by medical staff of different heights and usage habits.

[0004] Technical solution: A special dressing changing cart for burn department nursing convenient for taking materials, comprising a car body, an activity cavity integrally formed at the lower part of the interior of the car body, a plurality of steering columns rotatably connected to the lower surface of the interior of the activity cavity through a rotating shaft, the bottom of the steering column is located below the car body and fixedly connected to an L-shaped wheel seat, the inner side of the L-shaped wheel seat is rotatably connected to an axle column through a rotating shaft, and the opposite ends of two axle columns opposite to each other at the front and rear are fixedly connected to moving wheels; One end of the shaft column away from the moving wheel passes through the outer side of the L-shaped wheel seat and is fixedly connected with a cam, and a convex annular groove is formed on the side of the cam away from the L-shaped wheel seat; An annular guide rail is arranged on the outer side of the L-shaped wheel seat, and a connecting column is fixedly connected to the upper surface of the annular guide rail. The top ends of the connecting columns all penetrate into the interior of the movable cavity and are slidably connected to a piston plate together. A T-shaped slider is slidably mounted on the outer side wall of the annular guide rail, a traction piece is fixedly connected to one end of the T-shaped slider away from the L-shaped wheel seat, and a sliding column is fixedly connected to the outer side wall of the traction piece located on the inner side of the convex annular groove; An exhaust seat is integrally formed on the right side of the vehicle body, a through circular cavity is provided on the rear surface of the exhaust seat, an exhaust hole 1 is fixedly connected between the circular cavity and the movable cavity, the exhaust hole 1 is located above the piston plate, a through exhaust hole 2 is integrally formed on the right side of the circular cavity, a sealing column is rotatably connected to the inside of the circular cavity via a rotating shaft, and a through docking hole is provided on the upper surface of the sealing column.

[0005] Furthermore, a first placement cavity is integrally formed on the front surface of the vehicle body above the active cavity, and a second placement cavity is integrally formed on the front surface of the vehicle body above the active cavity.

[0006] Furthermore, a partition plate 1 is fixedly connected to the interior of the placement cavity 1, and a plurality of partition plates 2 are fixedly connected to the interior of the placement cavity 2.

[0007] Furthermore, the front surface of the vehicle body is located in front of the placement cavity 1 and the placement cavity 2 and is rotatably connected to two protective doors via hinges, and a handle is fixedly connected to the front surface of the protective door.

[0008] Furthermore, a strip box is provided on the right side of the vehicle body, a sliding plate is slidably connected inside the strip box, a plurality of springs are fixedly connected between the sliding plate and the strip box, two handrails are fixedly connected to the right side of the sliding plate and located on the right side of the strip box, the handrails are slidably connected to the strip box, and a handrail is commonly fixedly connected to one end of the two handrails away from the sliding plate.

[0009] Furthermore, a fixed block 1 is symmetrically fixedly connected to the front right side of the vehicle body, a screw is rotatably connected between the two fixed blocks 1 via a rotating shaft, a screw block is threadedly connected to the outer wall of the screw, the rear end of the screw block is fixedly connected to the front surface of the strip box, and a knob is fixedly connected to the top end of the screw.

[0010] Furthermore, a second fixing block is symmetrically fixedly connected to the rear right side of the vehicle body, a guide rod is fixedly connected between the two fixing blocks 2, and the rear surface of the strip box is located outside the guide rod and is fixedly connected to a guide block.

[0011] Furthermore, a through slot is provided on the lower surface of the strip box.

[0012] Furthermore, a plurality of cylinders are fixedly connected to the right side of the vehicle body and below the strip box, the outer side walls of the plurality of cylinders are slidably connected to a vertical rod, the top end of the vertical rod is fixedly connected to a telescopic rod, the top end of the telescopic rod passes through the through groove and is fixedly connected to the lower surface of the sliding sheet, the bottom end of the vertical rod is fixedly connected to a connecting sleeve, the inner side of the connecting sleeve is slidably connected to a toggle column, and the front end of the toggle column is fixedly connected to the upper rear surface of the sealing column.

[0013] Beneficial effect: The vehicle body can be flexibly moved by the multiple movable wheels, so that the movement is more convenient. During the movement of the movable wheels, exhaust needs to be repeatedly performed. At this time, when multiple movable wheels need to be locked, it is only necessary to rotate the sealing column so that the docking hole and the exhaust hole 1 and the exhaust hole 2 are misaligned to achieve the locking of multiple movable wheels, ensuring that the device can be stably parked after moving to the corresponding position, avoiding the problem of complicated braking operation of the brake pads on multiple universal wheels that need to be manipulated in sequence in the prior art; At the same time, in the present application, the connection transmission of the traction piece, the T-shaped slider, the annular guide rail and the sliding column allows the moving wheel to rotate along with the steering column, and can always ensure that the moving wheel can pull the piston plate to move, so that the moving wheel can be locked according to different steering directions to ensure the stability of the vehicle body; The first cavity is placed with a single partition, i.e., partition one, which is suitable for storing large items in different areas. The second cavity is placed with multiple partitions, i.e., partition two, which subdivides the space and facilitates the classification of small items. The protective door is provided to provide shielding and protection, and is easy to open and take out tools. When the device is in use, when the vehicle body is pushed or pulled by holding the hand lever, the moving wheels can rotate normally, so that the vehicle body can be moved. At the same time, when the vehicle body moves to the designated position, it is only necessary to release the moving hand lever. Under the push of the spring, the sliding piece is reset, so that the connecting sleeve drives the sealing column to reset. At this time, the docking hole and the exhaust hole 1 and the exhaust hole 2 are re-displaced. At this time, the moving wheels cannot move, ensuring that the vehicle body is parked stably. This method is simple to use. It is only necessary to hold the hand lever to push the vehicle body, and to release the hand lever to ensure that the vehicle body is parked stably, which saves the working time delayed by parking and improves the efficiency of burn rescue. The height of the handrail can be adjusted according to usage requirements. When adjusting, you only need to hold the knob to drive the screw to rotate. Under the limit of the guide rod and the guide block, the bar box can be driven up or down by the screw block to control the height of the handrail, which makes it easy to adjust for medical staff of different heights or usage habits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3 It is a side structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the connection structure of the L-shaped wheel seat, the annular guide rail, the moving wheel, the connecting column, the cam and the traction plate of the present invention; Figure 5 It is a schematic diagram of the side view connection structure of the exhaust seat, the sealing column, the toggle column and the connecting sleeve of the present invention; Figure 6 It is a schematic diagram of the cross-sectional connection structure of the exhaust seat and the sealing column of the present invention; Figure 7 It is a schematic diagram of the internal structure of the handrail, handrail and strip box of the present invention.

[0015] In the figure: 1, vehicle body; 2, movable cavity; 3, steering column; 4, L-shaped wheel seat; 5, shaft column; 6, moving wheel; 7, cam; 8, convex ring groove; 9, annular guide rail; 10, connecting column; 11, piston plate; 12, T-shaped slider; 13, traction plate; 14, sliding column; 15, exhaust seat; 16, circular cavity; 17, exhaust hole 1; 18, exhaust hole 2; 19, sealing column; 20, docking hole; 21, placement cavity 1; 22, placement cavity 2; 23. Partition one; 24. Partition two; 25. Protective door; 26. Handle; 27. Bar box; 28. Sliding plate; 29. ​​Spring; 30. Handrail; 31. Handrail; 32. Fixing block one; 33. Screw; 34. Screw block; 35. Knob; 36. Fixing block two; 37. Guide rod; 38. Guide block; 39. Through slot; 40. Cylinder; 41. Vertical rod; 42. Telescopic rod; 43. Connecting sleeve; 44. Toggle column. DETAILED DESCRIPTION

[0016] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Example like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, a special dressing changing vehicle for burn department nursing which is convenient for taking materials is provided, comprising a vehicle body 1, an active cavity 2 is integrally formed at the lower part of the vehicle body 1, a plurality of steering columns 3 are rotatably connected to the lower surface of the active cavity 2 via a rotating shaft, the bottom of the steering column 3 is located below the vehicle body 1 and is fixedly connected to an L-shaped wheel seat 4, the inner side of the L-shaped wheel seat 4 is rotatably connected to a shaft column 5 via a rotating shaft, and the opposite ends of the two shaft columns 5 opposite to each other are fixedly connected to moving wheels 6; One end of the shaft column 5 away from the moving wheel 6 penetrates to the outside of the L-shaped wheel seat 4 and is fixedly connected to a cam 7. A convex annular groove 8 is formed on the side of the cam 7 away from the L-shaped wheel seat 4. An annular guide rail 9 is disposed on the outer side of the L-shaped wheel seat 4, and a connecting column 10 is fixedly connected to the upper surface of the annular guide rail 9. The top ends of the multiple connecting columns 10 all penetrate into the interior of the active chamber 2 and are slidably connected to a piston plate 11. A T-shaped slider 12 is slidably mounted on the outer side wall of the annular guide rail 9, and a traction piece 13 is fixedly connected to one end of the T-shaped slider 12 away from the L-shaped wheel seat 4, and a sliding column 14 is fixedly connected to the outer side wall of the traction piece 13 located on the inner side of the convex annular groove 8; An exhaust seat 15 is integrally formed on the right side of the vehicle body 1, a through circular cavity 16 is provided on the rear surface of the exhaust seat 15, an exhaust hole 17 is fixedly connected between the circular cavity 16 and the movable cavity 2, the exhaust hole 17 is located above the piston plate 11, a through exhaust hole 2 18 is integrally formed on the right side of the circular cavity 16, a sealing column 19 is rotatably connected to the inside of the circular cavity 16 through a rotating shaft, and a through docking hole 20 is provided on the upper surface of the sealing column 19; The steering column 3 connects the vehicle body 1 and the L-shaped wheel seat 4, allowing multi-directional rotation and realizing multi-directional movement, so that the vehicle body 1 can be flexibly moved through the multiple movable wheels 6, thereby making the movement more convenient, and during the movement of the movable wheels 6, the cam 7 will rotate together, so that under the connection of the convex ring groove 8, the traction piece 13, and the connecting column 10, the piston plate 11 will repeatedly move up and down along the inside of the active chamber 2. At this time, the active chamber 2 needs to be connected and connected through the exhaust hole 17, the exhaust hole 2 and the docking hole 20 to realize exhaust, that is, during the movement of the movable wheel 6, it is necessary to exhaust repeatedly. At this time, when it is necessary to lock multiple movable wheels 6, it is only necessary to turn The dynamic sealing column 19 allows the docking hole 20 to be misaligned with the exhaust hole 17 and the exhaust hole 2 18 to achieve locking of multiple moving wheels 6, ensuring that the device can be stably parked after moving to the corresponding position, avoiding the problem of complex braking operation of the brake pads on multiple universal wheels that needs to be manipulated in sequence in the prior art. At the same time, in the present application, the connection transmission of the traction plate 13, the T-shaped slider 12, the annular guide rail 9 and the sliding column 14 allows the moving wheel 6 to rotate with the steering column 3, which can always ensure that the movement of the moving wheel 6 can pull the piston plate 11 to move, so that the moving wheel 6 can be locked after different turns to ensure the stability of the vehicle body 1.

[0018] like Figure 2 As shown, the front surface of the vehicle body 1 is located above the active cavity 2 and is integrally formed with a placement cavity 1 21, and the front surface of the vehicle body 1 is located above the active cavity 2 and is integrally formed with a placement cavity 22; A partition 1 23 is fixedly connected inside the placement cavity 1 21, and a plurality of partitions 24 are fixedly connected inside the placement cavity 22; The front surface of the vehicle body 1 is located in front of the placement cavity 1 21 and the placement cavity 2 22 and is rotatably connected to two protection doors 25 through hinges, and the front surface of the protection door 25 is fixedly connected to a handle 26; The placement cavity 21 is suitable for storing large items in different areas through the single partition, i.e., partition 1 23; the placement cavity 22 is suitable for storing large items in different areas through the multiple partitions, i.e., partition 2 24, which are used to subdivide the space for the convenience of classifying small items; the protection door 25 is provided to provide shielding and protection, and is convenient for opening and removing tools.

[0019] like Figure 3 , Figure 5 and Figure 6As shown, a strip box 27 is arranged on the right side of the vehicle body 1, a sliding sheet 28 is slidably connected inside the strip box 27, a plurality of springs 29 are fixedly connected between the sliding sheet 28 and the strip box 27, two handrails 30 are fixedly connected to the right side of the sliding sheet 28 and located on the right side of the strip box 27, the handrails 30 are slidably connected to the strip box 27, and a handrail 31 is fixedly connected to one end of the two handrails 30 away from the sliding sheet 28; A fixing block 32 is symmetrically fixedly connected to the front right side of the vehicle body 1, a screw rod 33 is rotatably connected between the two fixing blocks 32 via a rotating shaft, a screw block 34 is threadedly connected to the outer wall of the screw rod 33, a rear end of the screw block 34 is fixedly connected to the front surface of the strip box 27, and a knob 35 is fixedly connected to the top of the screw rod 33; A second fixing block 36 is symmetrically fixedly connected to the rear right side of the vehicle body 1, a guide rod 37 is fixedly connected between the two fixing blocks 36, and a guide block 38 is fixedly connected to the rear surface of the strip box 27 outside the guide rod 37; A through slot 39 is formed on the lower surface of the strip box 27; A plurality of cylinders 40 are fixedly connected to the right side of the vehicle body 1 and located below the strip box 27. A vertical rod 41 is slidably connected to the outer side walls of the plurality of cylinders 40. A telescopic rod 42 is fixedly connected to the top of the vertical rod 41. The top of the telescopic rod 42 passes through the through slot 39 and is fixedly connected to the lower surface of the sliding sheet 28. A connecting sleeve 43 is fixedly connected to the bottom end of the vertical rod 41. A toggle column 44 is slidably connected to the inner side of the connecting sleeve 43. The front end of the toggle column 44 is fixedly connected to the upper rear surface of the sealing column 19. The device is convenient to hold by the hand lever 31, so that it is convenient to push or pull the vehicle body 1 to move. When the hand lever 31 is held and pushed or pulled, the sliding piece 28 can slide along the inside of the strip box 27, so that the connection sleeve 43 can be driven to move under the connection of the telescopic rod 42 and the vertical rod 41, and then the sealing column 19 can be driven to rotate by the toggle column 44, so that the docking hole 20 can be connected with the exhaust hole 17 and the exhaust hole 2 18, so that the moving wheel 6 can move at this time. In this way, when the device is used, when the hand lever 31 is held and pushed or pulled, the moving wheel 6 can move. The moving wheel 6 can rotate normally, so that the vehicle body 1 can be moved. At the same time, when the vehicle body 1 moves to the designated position, it is only necessary to release the moving hand lever 31. Under the push of the spring 29, the sliding sheet 28 is reset, so that the connecting sleeve 43 drives the sealing column 19 to reset. At this time, the docking hole 20 and the exhaust hole 17 and the exhaust hole 2 18 are re-displaced. At this time, the moving wheel 6 cannot move, ensuring that the vehicle body 1 is parked stably. This method is simple to use. It is only necessary to hold the hand lever 31 to push the vehicle body 1. Release the hand lever 31 to ensure that the vehicle body 1 is parked stably, saving the working time delayed by parking and improving the efficiency of burn rescue. The height of the handrail 31 can be adjusted according to the needs of use. When adjusting, it is only necessary to hold the knob 35 to drive the screw 33 to rotate, so that under the limit of the guide rod 37 and the guide block 38, the bar box 27 can be driven to move upward or downward through the screw block 34, thereby controlling the height of the handrail 31, which is convenient for medical staff with different heights or usage habits to adjust and use.

[0020] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A dressing changing cart for burn department nursing that is convenient for taking out materials, comprising a cart body (1), characterized in that: An activity cavity (2) is integrally formed at the lower interior of the vehicle body (1); a plurality of steering columns (3) are rotatably connected to the lower interior surface of the activity cavity (2) via a rotating shaft; the bottom of the steering column (3) is located below the vehicle body (1) and is fixedly connected to an L-shaped wheel seat (4); the inner side of the L-shaped wheel seat (4) is rotatably connected to an axle column (5) via a rotating shaft; and the opposite ends of two axle columns (5) opposite to each other at the front and rear are fixedly connected to moving wheels (6); One end of the shaft column (5) away from the moving wheel (6) penetrates to the outside of the L-shaped wheel seat (4) and is fixedly connected to a cam (7); a convex annular groove (8) is formed on the side of the cam (7) away from the L-shaped wheel seat (4); An annular guide rail (9) is disposed on the outer side of the L-shaped wheel seat (4), a connecting column (10) is fixedly connected to the upper surface of the annular guide rail (9), and the top ends of a plurality of connecting columns (10) all penetrate into the interior of the movable chamber (2) and are slidably connected to a piston plate (11) in common; A T-shaped slider (12) is slidably mounted on the outer side wall of the annular guide rail (9); one end of the T-shaped slider (12) away from the L-shaped wheel seat (4) is fixedly connected to a traction piece (13); and the outer side wall of the traction piece (13) is located on the inner side of the convex annular groove (8) and is fixedly connected to a sliding column (14); An exhaust seat (15) is integrally formed on the right side of the vehicle body (1), a through circular cavity (16) is provided on the rear surface of the exhaust seat (15), an exhaust hole (17) is fixedly connected between the circular cavity (16) and the movable cavity (2), the exhaust hole (17) is located above the piston plate (11), a through exhaust hole (18) is integrally formed on the right side of the circular cavity (16), a sealing column (19) is rotatably connected to the inside of the circular cavity (16) via a rotating shaft, and a through docking hole (20) is provided on the upper surface of the sealing column (19).

2. According to claim 1, a special dressing change cart for burn department nursing with convenient material collection is characterized by: The front surface of the vehicle body (1) is located above the active cavity (2) and is integrally formed with a first placement cavity (21); the front surface of the vehicle body (1) is located above the active cavity (2) and is integrally formed with a second placement cavity (22).

3. The special dressing changing cart for burn department nursing with convenient material collection according to claim 2 is characterized by: The interior of the placement cavity 1 (21) is fixedly connected with a partition 1 (23), and the interior of the placement cavity 2 (22) is fixedly connected with a plurality of partition 2s (24).

4. The special dressing changing cart for burn department nursing with convenient material collection according to claim 2 is characterized by: The front surface of the vehicle body (1) is located in front of the first placement cavity (21) and the second placement cavity (22), and is rotatably connected to two protective doors (25) via hinges. The front surfaces of the protective doors (25) are fixedly connected to handles (26).

5. The special dressing changing cart for burn department nursing with convenient material collection according to claim 1 is characterized by: A strip box (27) is arranged on the right side of the vehicle body (1), a sliding sheet (28) is slidably connected inside the strip box (27), a plurality of springs (29) are fixedly connected between the sliding sheet (28) and the strip box (27), two handrails (30) are fixedly connected to the right side of the sliding sheet (28) and located to the right of the strip box (27), the handrails (30) are slidably connected to the strip box (27), and a handrail (31) is fixedly connected to one end of the two handrails (30) away from the sliding sheet (28).

6. The special dressing changing cart for burn department nursing with convenient material collection according to claim 5 is characterized by: A fixing block (32) is symmetrically fixedly connected to the front right side of the vehicle body (1); a screw rod (33) is rotatably connected between the two fixing blocks (32) via a rotating shaft; a screw block (34) is threadedly connected to the outer wall of the screw rod (33); a rear end of the screw block (34) is fixedly connected to the front surface of the strip box (27); and a knob (35) is fixedly connected to the top end of the screw rod (33).

7. The special dressing changing cart for burn department nursing with convenient material collection according to claim 5 is characterized by: A second fixing block (36) is symmetrically fixedly connected to the rear right side of the vehicle body (1); a guide rod (37) is fixedly connected between the two second fixing blocks (36); and a guide block (38) is fixedly connected to the rear surface of the strip box (27) located outside the guide rod (37).

8. The special dressing changing cart for burn department nursing with convenient material collection according to claim 5 is characterized by: A through slot (39) is formed on the lower surface of the strip box (27).

9. The special dressing changing cart for burn department nursing with convenient material collection according to claim 8, characterized in that: A plurality of cylinders (40) are fixedly connected to the right side of the vehicle body (1) and located below the strip box (27); the outer side walls of the plurality of cylinders (40) are slidably connected to a vertical rod (41); the top end of the vertical rod (41) is fixedly connected to a telescopic rod (42); the top end of the telescopic rod (42) passes through the through slot (39) and is fixedly connected to the lower surface of the sliding sheet (28); the bottom end of the vertical rod (41) is fixedly connected to a connecting sleeve (43); the inner side of the connecting sleeve (43) is slidably connected to a toggle column (44); the front end of the toggle column (44) is fixedly connected to the upper rear surface of the sealing column (19).

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