A transfer device and method for accessing an autoclave

Abstract

This application relates to a transfer device and method for entering and exiting a high-temperature, high-pressure sterilizer, belonging to the field of medical device auxiliary equipment technology. It includes a trolley assembly; two first universal casters; two front wheels; a limiting rod; a trapezoidal block; a load-bearing steel pipe; and a pedal assembly. This transfer device and method allows the trolley to smoothly enter and exit the sterilizer with the aid of a slanted pedal and a straight pedal. The entire weight of the trolley is borne by the guide rail inside the sterilizer, and the trolley's wheels are suspended and unloaded, avoiding damage to the sterilizer wall. The two front wheels of the trolley are fixed in the direction of their universal bearings by spot welding, allowing them to move only forward and backward. This design ensures that the trolley's movement on the pedals always remains straight and does not deviate. The braking function is integrated into the directional universal casters, effectively avoiding potential motion interference between the braking system and the vehicle frame. With the help of the limiting pins, the sterilizer, straight pedal, and slanted pedal can be quickly assembled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical instrument auxiliary equipment, in particular to a transfer device and method for entering and exiting a high-temperature and high-pressure sterilization pot. BACKGROUND

[0002] At present, in animal laboratories, operating rooms or other clean barrier environments, high-temperature and high-pressure sterilization pots are key equipment for ensuring that instruments or articles reach a sterile level. Experimenters usually need to place the articles to be sterilized on a cart and then push the cart into the sterilization pot for processing.

[0003] However, the existing high-temperature and high-pressure sterilization pot cart has the following defects in use: Because the conventional high-temperature and high-pressure sterilization pot cart is heavy, when the cart is moved into the high-temperature and high-pressure sterilization pot or in the high-temperature and high-pressure sterilization pot, the cart may accidentally hit the door frame of the sterilization pot or the moving wheels may rub against and collide with the inner wall and bottom of the pot body, so that the cart is prone to scratch or indent the surface of the pot body. Due to the lack of effective positioning or braking devices, the stability is insufficient during the pushing-in or pulling-out process, and other safety hazards may occur. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a transfer device and method for entering and exiting a high-temperature and high-pressure sterilization pot, which has the advantages of convenient transfer, effectively avoiding friction and collision between the cart wheels and the pot body, and protecting the integrity of the inner wall of the sterilization pot. The problems of conventional carts, which are often heavy and inconvenient to operate in a small barrier space, are solved.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a transfer device and method for entering and exiting a high-temperature and high-pressure sterilization pot, comprising:

[0006] A cart assembly, comprising a welded frame and a tray arranged on the welded frame;

[0007] Two first universal wheels arranged at the bottom of the welded frame;

[0008] Two front wheels arranged at the bottom of the welded frame;

[0009] A limiting rod arranged on the side surface of the welded frame;

[0010] A trapezoidal block arranged at the bottom edge of the left and right sides of the welded frame, facilitating the entry of the cart into the high-temperature and high-pressure sterilization pot;

[0011] A load-bearing steel pipe arranged at the bottom of the welded frame, which cooperates with the guide rail in the pot after the cart enters the sterilization pot, so that the first universal wheels and the front wheels are suspended and separated from the bottom of the pot.

[0012] Further, it further comprises:

[0013] Pedal assembly

[0014] The pedal assembly comprises a straight pedal, an inclined pedal and a second universal wheel.

[0015] The straight pedal is arranged on one side of the sterilization pot and is used to connect the door sill of the sterilization pot.

[0016] The inclined pedal is arranged on one side of the straight pedal and is used to connect the external ground.

[0017] The second universal wheel is arranged at the bottom of the straight pedal and the inclined pedal.

[0018] The straight pedal and the inclined pedal are both fixed with anti-deviation blocking edges on the front and rear sides, which can automatically correct the running track of the trolley assembly and prevent the trolley from deviating and colliding with the door frame of the sterilization pot.

[0019] Further, the pedal assembly further comprises a butt joint structure comprising a limiting pin arranged on the straight pedal and the inclined pedal, which is used to connect the inclined pedal, the straight pedal and the sterilization pot during use.

[0020] Further, the number of the limiting rods is three, which are detachably arranged on the side of the welded frame.

[0021] Further, the front wheel is connected with the welded frame through a bolt, and the front wheel can only roll in the front-rear direction.

[0022] Further, the pedal assembly further comprises a handle arranged at the rear end of the straight pedal and the inclined pedal.

[0023] Further, the number of the second universal wheels is four, two of which are arranged at the bottom of the straight pedal and the other two are arranged at the bottom of the inclined pedal.

[0024] Further, the method for entering and exiting the transfer device of the high-temperature and high-pressure sterilization pot comprises the following steps:

[0025] S1: one end of the straight pedal is overlapped on the door sill of the high-temperature and high-pressure sterilization pot, and the other end of the straight pedal is butted with the inclined pedal to form a transition slope from the ground to the door of the sterilization pot; the limiting pin is passed through the positioning hole on the straight pedal and the inclined pedal to rigidly fix the pedal assembly and the sterilization pot body, so as to prevent the pedal from moving when being stressed.

[0026] S2: the trolley assembly is pushed to move along the inclined pedal and the straight pedal towards the inside of the sterilization pot, and the inclined surface of the trapezoidal block arranged on the bottom of the trolley welded frame is used as a guide to make the trapezoidal block slide and overlap on the guide rail at the bottom of the inner cavity of the sterilization pot.

[0027] S3: Continue pushing the trolley assembly until the load-bearing steel pipe at the bottom of the welding frame is fully overlapped with the guide rail inside the sterilizer. At this time, the center of gravity of the trolley assembly shifts to the guide rail, causing the first caster wheel and the front wheel at the bottom of the welding frame to rise and suspend in the air, detaching from contact with the pedal and the bottom of the sterilizer.

[0028] S4: With the wheels suspended in the air, push or pull the trolley assembly along the guide rail to adjust its position at the designated location inside the sterilizer.

[0029] S5: After sterilization or loading / unloading is completed, pull the trolley assembly out in the opposite direction along the guide rail. When the trapezoidal block and the load-bearing steel pipe detach from the guide rail and fall back onto the pedal assembly, operate the front wheel brake to control the speed at which the trolley slides down the inclined pedal until the trolley returns to the ground completely.

[0030] Furthermore, in step S2, the front wheel restricts the rotation of its universal bearing by spot welding, thereby ensuring that the front wheel can only roll in the forward and backward direction. In conjunction with the anti-deviation guards on the straight pedal and the angled pedal, the travel trajectory of the trolley assembly is automatically corrected to prevent the trolley from deviating and hitting the inner wall of the sterilizer.

[0031] Furthermore, before step S1, there is also a pedal assembly step, in which the handles on the straight pedal and the angled pedal are pulled to drag them to the designated position using the second universal wheel. After the position is determined, the pedal is laid flat and the locking operation of the limit pin is performed. The bottom of the pedal is at the same height as the bottom of its second universal wheel.

[0032] Furthermore, in step S5, when it is detected that the trolley assembly has moved out of the sterilizer and passed the inclined section of the inclined pedal, the brake device on the front wheel is manually stepped on or triggered. By utilizing the characteristics of the front wheel as the main load-bearing wheel and guide wheel, frictional resistance is generated to counteract the acceleration trend of the trolley assembly due to the gravity component, so as to achieve smooth deceleration and landing.

[0033] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0034] The transfer device and method for entering and exiting the high-temperature and high-pressure sterilizer:

[0035] (1) With the help of the inclined and straight pedals, the trolley can smoothly enter and exit the sterilizer, and the guide rail inside the sterilizer bears the entire weight of the trolley. The wheels of the trolley are suspended in the air and do not bear any force, thus avoiding damage to the sterilizer wall.

[0036] (2) The two front wheels of the trolley are five-inch universal wheels with brakes, and the direction of their universal bearings is fixed by spot welding so that they can only move back and forth. This design first ensures that the movement of the trolley on the pedal always remains in a straight line and will not deviate. At the same time, the braking function is integrated into the universal wheel with a fixed direction, which effectively avoids possible motion interference between the braking system and the frame of the vehicle. Furthermore, the trolley can be effectively braked when it is moved out of the sterilizer. Finally, the braking function of the universal wheel enables the trolley to be effectively braked when it is moved out of the sterilizer, avoiding the problem of excessive speed caused by inertia and improving the safety of operation.

[0037] (3) The inclined and straight parts of the pedal are manufactured separately, and each pedal is equipped with casters in front and handles in the back, which reduces the difficulty of workers to carry. At the same time, a corresponding docking structure is designed so that the sterilizer, straight pedal and inclined pedal can be quickly assembled and fixed with the help of the limit pin. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural view of the present application;

[0039] Figure 2 This is a schematic diagram of the trolley entering the sterilizer in this application;

[0040] Figure 3 This is a perspective view of the trolley component of this application;

[0041] Figure 4 This is an exploded view of the trolley assembly of this application;

[0042] Figure 5 This is a schematic diagram showing the straight pedal and angled pedal after installation according to this application;

[0043] Figure 6 This is a diagram of the pedal assembly of this application;

[0044] Figure 7 This is a flowchart illustrating the process of a trolley entering and exiting the sterilizer in this application.

[0045] Figure 8 This is a schematic diagram of the front wheel structure of this application;

[0046] Figure 9 This is a schematic diagram illustrating the lifting and movement of the straight pedal and the angled pedal in this application.

[0047] In the diagram: 1. Cart assembly, 2. Straight pedal, 3. Angled pedal, 4. Welded frame, 5. Tray, 6. Limiting rod, 7. First caster wheel, 8. Front wheel, 9. Limiting pin, 10. Second caster wheel, 11. Pedal assembly, 12. Handle, 13. Trapezoidal block, 14. Load-bearing steel pipe, 15. Anti-deviation guard. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] Please see Figures 1-9 A transfer device for entering and exiting a high-temperature, high-pressure sterilizer in this embodiment includes:

[0050] The trolley assembly 1 includes a welded frame 4 and a tray 5 disposed on the welded frame 4.

[0051] Two first omnidirectional wheels 7 are located at the bottom of the welded frame 4;

[0052] Two front wheels 8 are located at the bottom of the welded frame 4;

[0053] When the trolley enters the high-temperature and high-pressure sterilizer, the two front wheels 8 are located at the end closer to the high-temperature and high-pressure sterilizer, and the two first universal wheels 7 are located at the end farther away from the high-temperature and high-pressure sterilizer.

[0054] The two front wheels of the trolley are spot-welded fixed bearing casters with brakes, ensuring that the trolley always stays in a straight line when moving on the pedal and will not deviate.

[0055] Limiting rod 6 is located on the side of welding frame 4;

[0056] The detachable pallet 5 and limit bar 6 on the trolley also facilitate the loading and unloading of different goods.

[0057] Trapezoidal blocks 13 are set at the bottom edges of the left and right sides of the welded frame 4 to facilitate the trolley entering the high-temperature and high-pressure sterilizer.

[0058] The load-bearing steel pipe 14 is set at the bottom of the welded frame 4. Guide rails are installed on both sides of the bottom of the sterilizer, and multiple bearing balls are set on the guide rails. When the trolley enters the sterilizer, the trapezoidal block 13 contacts the bearing balls and is subjected to an upward force, which slightly lifts the trolley and ensures that the wheels at the bottom of the trolley leave the ground. After entering the guide rail, the load-bearing steel pipe 14 bears its weight, so that the wheels will not press against the pot wall. The load-bearing steel pipe 14 is used to cooperate with the guide rail inside the pot after the trolley enters the sterilizer, so that the first universal wheel 7 and the front wheel 8 are suspended and detached from the bottom of the pot.

[0059] The trolley first passes through the inclined pedal 3, then through the straight pedal 2, and finally the trapezoidal block 13 at the front end of the trolley welding frame 4 connects with the guide rail inside the sterilizer and enters. At this time, the entire weight of the trolley will be borne by the guide rail of the sterilizer, so that the wheels of the trolley are suspended in the air and not subjected to force, thereby avoiding wear or damage to the sterilizer wall caused by the wheels of the trolley.

[0060] Integrating the braking function into these directional fixed casters effectively avoids motion interference between the braking system and the welded frame 4 of the trolley. When the trolley is pulled out of the sterilizer and passes the inclined pedal 3, the staff can step on the brake. This braking function effectively reduces the excessive speed that the trolley may generate due to inertia, ensuring that the trolley lands smoothly and improving operational safety.

[0061] Also includes:

[0062] Pedal assembly 11;

[0063] The pedal assembly 11 includes a straight pedal 2, an angled pedal 3, and a second omnidirectional wheel 10;

[0064] Straight pedal 2, located on one side of the sterilizer, is used to connect to the sterilizer threshold;

[0065] Multiple grip bars are provided on the middle side of the straight pedal 2, which can be used to lift the straight pedal 2 and move it using the second omnidirectional wheel 10.

[0066] The inclined pedal 3 is set at an angle to one side of the straight pedal 2 to connect with the external ground;

[0067] Among them, the straight pedal 2 and the inclined pedal 3 are fixed with anti-deviation guards 15 on the front and rear sides, which can automatically correct the travel trajectory of the trolley assembly 1 and prevent the trolley from deviating and hitting the sterilizer door frame.

[0068] The second omnidirectional wheel 10 is located at the bottom of the straight pedal 2 and the angled pedal 3;

[0069] It also includes a docking structure, including a limiting pin 9, which is set on the straight pedal 2 and the inclined pedal 3, and is used to install and connect the inclined pedal 3 and the straight pedal 2 to the sterilizer during use.

[0070] The straight and inclined parts of the straight pedal 2 and the inclined pedal 3 are manufactured separately. The straight pedal 2 and the inclined pedal 3 are equipped with casters at the front and handles 12 at the rear, which reduces the difficulty of handling by workers. At the same time, a corresponding docking structure is designed so that the sterilizer, the straight pedal 2 and the inclined pedal 3 can be quickly assembled and fixed with the help of the limit pin 9.

[0071] The inlet door frame of the sterilizer is equipped with a sterilizer threshold, and the straight pedal 2 can be pushed to the sterilizer threshold. The straight pedal 2 is installed and limited by the limit pin 9, so that the straight pedal 2 is connected to the sterilizer and the trolley can easily enter the sterilizer.

[0072] Furthermore, there are three limit rods 6, which are detachably installed on the side of the welded frame 4. The front wheel 8 is connected to the welded frame 4 by bolts. The front wheel 8 is a conventional universal wheel with brakes, but the rotation of its universal bearing is restricted by spot welding, so that the front wheel 8 can only roll in and out of the sterilizer in the forward and backward direction. At the same time, the braking function of the front wheel 8 is not affected by spot welding. With the anti-deviation guard 15, the trolley will not hit the door frame. The pedal assembly 11 also includes a handle 12. Through the design of the limit pin 9 with the docking structure, the sterilizer, the straight pedal 2 and the inclined pedal 3 can be quickly and stably assembled and disassembled, which improves the operating efficiency and flexibility of the overall system. The limit pin 9 is set on the side of the straight pedal 2 and the inclined pedal 3 near the sterilizer. There are four second universal wheels 10, two of which are set at the bottom of the straight pedal 2 and the other two are set at the bottom of the inclined pedal 3.

[0073] Preferably, a method for entering and exiting a transfer device for a high-temperature, high-pressure sterilizer includes the following steps:

[0074] S1: Connect one end of the straight pedal 2 to the threshold of the high-temperature and high-pressure sterilizer, and connect one end of the inclined pedal 3 to the other end of the straight pedal 2 to form a transition ramp from the ground to the door of the sterilizer; the operating limit pin 9 passes through the positioning holes on the straight pedal 2 and the inclined pedal 3 to rigidly fix the pedal assembly 11 to the sterilizer body to prevent the pedal from shifting when subjected to force.

[0075] S2: Push the trolley assembly 1 along the inclined pedal 3 and the straight pedal 2 into the sterilizer. Utilize the inclined guiding effect of the trapezoidal blocks 13 set on both sides of the bottom of the trolley welding frame 4 to make the trapezoidal blocks 13 slide into and overlap on the guide rail at the bottom of the sterilizer cavity.

[0076] S3: Continue pushing the trolley assembly 1 until the load-bearing steel pipe 14 set at the bottom of the welding frame 4 is fully overlapped on the guide rail inside the sterilizer. At this time, the center of gravity of the trolley assembly 1 is transferred to the guide rail, causing the first universal wheel 7 and the front wheel 8 located at the bottom of the welding frame 4 to be lifted and suspended in the air, detached from contact with the pedal and the bottom of the pot.

[0077] S4: With the wheels suspended in the air, push or pull the trolley assembly 1 along the guide rail to adjust its position at the designated location inside the sterilizer.

[0078] S5: After sterilization or loading and unloading is completed, pull the trolley assembly 1 out in the opposite direction along the guide rail. When the trapezoidal block 13 and the load-bearing steel pipe 14 are removed from the guide rail and fall back onto the pedal assembly 11, operate the brake device of the front wheel 8 to brake and control the speed at which the trolley slides down the inclined pedal 3 until the trolley returns to the ground completely.

[0079] It is understandable that before step S1, there is also a pedal assembly step, in which the handles 12 on the straight pedal 2 and the inclined pedal 3 are pulled to drag them to the designated position by the second universal wheel 10. After the position is determined, the pedal is flattened and the locking operation of the limit pin 9 is performed. The bottom of the pedal is at the same height as the bottom of its second universal wheel 10.

[0080] In step S2, the front wheel 8 restricts the rotation of its universal bearing by spot welding, thereby ensuring that the front wheel 8 can only roll in the front-back direction. In conjunction with the anti-deviation guards 15 on the straight pedal 2 and the inclined pedal 3, the travel trajectory of the trolley assembly 1 is automatically corrected to prevent the trolley from deviating and hitting the inner wall of the sterilizer.

[0081] In step S5, when it is detected that the trolley assembly 1 has moved out of the sterilizer and passed the inclined section of the inclined pedal 3, the brake device on the front wheel 8 is manually stepped on or triggered. The front wheel 8 is used as the main load-bearing wheel and guide wheel to generate frictional resistance to counteract the acceleration trend of the trolley assembly 1 caused by the gravity component, so as to achieve smooth deceleration and landing.

[0082] Understandably, by welding the trapezoidal block 13 to the front and rear ends of the trolley welding frame 4, a strong and inseparable connection is ensured between the trapezoidal block 13 and the welding frame 4.

[0083] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0084] The working principle of the above embodiments is as follows:

[0085] When the staff pushes the trolley, it first passes through the inclined pedal 3, then the straight pedal 2, and finally the trapezoidal block 13 at the front end of the trolley's welded frame 4 aligns with the guide rail inside the sterilizer and enters. At this point, the entire weight of the trolley is supported by the sterilizer's guide rail, causing the trolley's wheels to be suspended in the air and unloaded, thus preventing wear or damage to the sterilizer wall. The trolley's two front wheels 8 are spot-welded universal bearings with brakes, ensuring that the trolley remains straight and does not deviate when moving on the pedals. Simultaneously, the braking function is integrated into these fixed universal bearings, effectively preventing potential motion interference between the braking system and the trolley's welded frame 4. When the trolley moves from... When the trolley is pulled out of the sterilizer and passes the inclined pedal 3, the staff can step on the brake. This braking function effectively reduces the excessive speed that the trolley may generate due to inertia, ensuring that the trolley lands smoothly and improving operational safety. The pedal assembly 11 is manufactured separately for the inclined and straight parts, and each pedal is equipped with a caster wheel in front and a handle 12 at the rear, which greatly reduces the labor intensity of the staff when moving and deploying the pedals. In addition, through the design of a precise docking structure and limit pin 9, the sterilizer, straight pedal 2 and inclined pedal 3 can be quickly and stably assembled and disassembled, improving the overall system's operational efficiency and flexibility. The detachable tray 5 and limit bar 6 on the trolley also facilitate the loading and unloading of different goods.

[0086] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0087] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transfer device for entering and exiting a high-temperature, high-pressure sterilizer, characterized in that, include: The trolley assembly (1) includes a welded frame (4) and a tray (5) disposed on the welded frame (4); Two first casters (7) are located at the bottom of the welding frame (4); Two front wheels (8) are located at the bottom of the welded frame (4); A limiting rod (6) is provided on the side of the welding frame (4); Trapezoidal blocks (13) are set at the bottom edges of the left and right sides of the welded frame (4) to facilitate the trolley entering the high-temperature and high-pressure sterilizer; A load-bearing steel pipe (14) is set at the bottom of the welded frame (4) so ​​that the trolley can enter the sterilizer and cooperate with the guide rail inside the sterilizer, so that the first universal wheel (7) and the front wheel (8) are suspended and detached from the bottom of the sterilizer.

2. The transfer device for entering and exiting a high-temperature and high-pressure sterilizer according to claim 1, characterized in that, Also includes: Pedal assembly (11); The pedal assembly (11) includes a straight pedal (2), a slanted pedal (3), and a second omnidirectional wheel (10). The straight pedal (2) is located on one side of the sterilizer and is used to connect to the threshold of the sterilizer; The inclined pedal (3) is inclined on one side of the straight pedal (2) and is used to connect to the external ground; The second omnidirectional wheel (10) is located at the bottom of the straight pedal (2) and the angled pedal (3); Both the straight pedal 2 and the inclined pedal 3 are fixed with anti-deviation guards (15) on the front and rear sides, which can automatically correct the travel trajectory of the trolley assembly 1 and prevent the trolley from deviating and hitting the sterilizer door frame. It also includes a docking structure, including a limiting pin (9), which is set on the straight pedal (2) and the inclined pedal (3) for connecting the inclined pedal (3) and the straight pedal (2) to the sterilizer during use.

3. The transfer device according to claim 1, characterized in that: The number of the limiting rods (6) is three, which are detachably installed on the side of the welding frame (4).

4. The transfer device according to claim 1, characterized in that: The front wheel (8) is connected to the welded frame (4) by bolts, and the front wheel (8) can only roll in the front-back direction.

5. A transfer device according to claim 2, characterized in that: The pedal assembly also includes a handle (12) disposed at the rear end of the straight pedal (2) and the angled pedal (3).

6. A transfer device according to claim 2, characterized in that: The number of the second universal wheels (10) is four, two of which are located at the bottom of the straight pedal (2) and the other two are located at the bottom of the slanted pedal (3).

7. A method for entering and exiting a high-temperature, high-pressure sterilizer using the transfer device described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1: Place one end of the straight pedal (2) on the threshold of the high-temperature and high-pressure sterilizer, and connect one end of the inclined pedal (3) to the other end of the straight pedal (2) to form a transition ramp from the ground to the door of the sterilizer; operate the limiting pin (9) through the positioning holes on the straight pedal (2) and the inclined pedal (3) to rigidly fix the pedal assembly (11) to the sterilizer body to prevent the pedal from shifting when under force; S2: Push the trolley assembly (1) along the inclined pedal (3) and the straight pedal (2) into the sterilizer. Utilize the inclined guiding effect of the trapezoidal blocks (13) set on both sides of the bottom of the trolley welding frame (4) to make the trapezoidal blocks (13) slide into and overlap on the guide rail at the bottom of the sterilizer cavity. S3: Continue pushing the trolley assembly (1) until the load-bearing steel pipe (14) at the bottom of the welding frame (4) is fully attached to the guide rail inside the sterilizer. At this time, the center of gravity of the trolley assembly (1) is transferred to the guide rail, causing the first universal wheel (7) and the front wheel (8) at the bottom of the welding frame (4) to be lifted and suspended, detached from contact with the pedal and the bottom of the pot. S4: With the wheels suspended in the air, push or pull the trolley assembly (1) along the guide rail to adjust its position at the designated position inside the sterilizer; S5: After sterilization or loading and unloading, pull the trolley assembly (1) out along the guide rail in the opposite direction. When the trapezoidal block (13) and the load-bearing steel pipe (14) are removed from the guide rail and fall back onto the pedal assembly (11), operate the brake device on the front wheel (8) to brake and control the speed at which the trolley slides down the inclined pedal (3) until the trolley returns to the ground completely.

8. The method for entering and exiting the transfer device for entering and exiting a high-temperature and high-pressure sterilizer according to claim 7, characterized in that: In step S2, the front wheel (8) restricts the rotation of its universal bearing by spot welding, thereby ensuring that the front wheel (8) can only roll in the front-back direction. In conjunction with the anti-deviation guards (15) on the straight pedal (2) and the oblique pedal (3), the travel trajectory of the trolley assembly (1) is automatically corrected to prevent the trolley from deviating and hitting the inner wall of the sterilizer.

9. The method for entering and exiting the transfer device for entering and exiting a high-temperature and high-pressure sterilizer according to claim 7, characterized in that: Before step S1, there is also a pedal assembly step. By pulling the handle (12) on the straight pedal (2) and the inclined pedal (3), the pedal is dragged to the designated position by the second universal wheel (10). After the position is determined, the pedal is flattened and the locking operation of the limit pin (9) is performed. The bottom of the pedal is at the same height as the bottom of its second universal wheel (10).

10. The method for entering and exiting the transfer device for entering and exiting a high-temperature and high-pressure sterilizer according to claim 7, characterized in that: In step S5, when the trolley assembly (1) is moved out of the sterilizer and passes through the inclined section of the inclined pedal (3), the brake device on the front wheel (8) is manually stepped on or triggered. The front wheel (8) is used as the main load-bearing wheel and guide wheel to generate frictional resistance to counteract the acceleration trend of the trolley assembly (1) caused by gravity, so as to achieve smooth deceleration and landing.

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