Quick dismounting device for pressure vessel hatch cover

Abstract

The application discloses a kind of pressure vessel cabin cover quick dismounting device, belong to pressure vessel technical field, comprising: guide slot mechanism, annular chain type fastening structure and sliding block, guide slot mechanism includes base, base is provided with sliding slot and guide groove, guide groove includes straight line segment and arc segment;Sliding block is provided with rotatable cabin cover fixed support, cabin cover fixed support can be fixedly connected with pressure vessel cabin cover;Cabin cover fixed support is provided with guide block, guide block is limited in guide groove, to make guide block in straight line segment make cabin cover fixed support drive pressure vessel cabin cover translation, and make guide block in arc segment make cabin cover fixed support drive pressure vessel cabin cover rotate.The pressure vessel cabin cover quick dismounting device of the application aims to solve the technical problems existing in the dismounting process of the existing pressure vessel cabin cover, such as jamming, damage to the sealing surface, high labor cost, limited dismounting space and strong dependence on manual work, significantly improves the dismounting efficiency, safety and space utilization.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pressure-resistant containers, and particularly relates to a quick dismounting device for a pressure-resistant container cabin cover. BACKGROUND

[0002] Pressure-resistant containers are widely used in underwater equipment, chemical industry and metallurgical industry. In order to meet the safety requirements, the strength, rigidity and stability of the shell structure of the pressure-resistant container are fully considered in the design, and a certain safety factor is reserved, so the weight of the shell is often large. The structure of the cabin cover, as an important part of the pressure container, is mainly divided into spherical head, butterfly head and flat head. In order to avoid large slip under pressure, a high-precision stop is generally designed at the flange of the cabin cover.

[0003] The design of large weight and stop brings great difficulty to the dismounting of the cabin cover. The stop between the cabin cover and the pressure-resistant container cylinder is generally a high-precision fit. If the coaxial relationship cannot be guaranteed during dismounting, it is easy to cause jamming and damage to the fit surface. Taking the dismounting of a pressure-resistant cabin (flat cabin cover) with a design pressure of 4.5 MPa and a diameter of 1000 mm as an example, the dismounting of the flat cabin cover with a weight of about 120 kg requires 2-3 workers to cooperate. First, the fasteners between the cylinder and the cabin cover are removed, then the cabin cover is manually moved along the axial direction of the cylinder until the stop is completely exposed from the cylinder. The vertical electric hoist cannot bear the weight during this process, and can only rely entirely on manual operation. Finally, the cabin cover is lifted and moved away using the electric hoist. Obviously, the dismounting of the cabin cover not only requires high labor cost, but also is limited by the space.

[0004] Therefore, the prior art needs to be improved and developed. SUMMARY

[0005] The present application provides a quick dismounting device for a pressure-resistant container cabin cover, which aims to solve the technical problems of jamming, damage to the sealing surface, high labor cost, limited dismounting space and strong dependence on manual operation during the dismounting process of the cabin cover of the existing pressure-resistant container, and significantly improves the dismounting efficiency, safety and space utilization.

[0006] In a first aspect, the present application provides a quick dismounting device for a pressure-resistant container cabin cover, which is used for dismounting the cabin cover of the pressure-resistant container, and comprises:

[0007] A guide slot mechanism, which comprises a base provided with a sliding slot and a guide slot, the guide slot comprising a straight line segment and an arc line segment;

[0008] A ring chain type fastening structure, which is connected with the guide slot mechanism and can be fixed around the side of the pressure-resistant container cylinder, is used to stabilize the base, so that the pressure-resistant container cabin cover can be safely opened and closed;

[0009] The slider is slidably arranged on the sliding groove and can reciprocate in the left-right direction, and the slider is provided with a rotatable hatch fixing support which can be fixedly connected with the pressure-resistant container hatch; the hatch fixing support is provided with a guide block which is limited in the guide groove, so that the guide block drives the hatch fixing support and the pressure-resistant container hatch to move horizontally in the left-right direction to keep the pressure-resistant container hatch coaxial with the pressure-resistant container cylinder in the linear segment, and the guide block drives the hatch fixing support and the pressure-resistant container hatch to rotate in the arc segment.

[0010] The pressure-resistant container hatch quick dismounting device provided by the application realizes the combined movement mode of horizontal movement and rotation of the pressure-resistant container hatch in the dismounting process through the cooperation of the guide groove mechanism, the annular chain fastening structure and the slider. This design not only effectively solves the problems of jamming and damage to the sealing surface that may occur in the dismounting process of the hatch, but also greatly improves the space utilization rate, reduces the labor cost and dependence on manual labor, and ensures the smooth and controllable dismounting process and good repeatability, thereby effectively solving the many deficiencies in the prior art.

[0011] Further, the base is provided with two groups of symmetrical sliding grooves, each group of sliding grooves including two sliding grooves arranged symmetrically in front and back; and the slider is slidably arranged on all the sliding grooves.

[0012] Further, two guide grooves are symmetrically arranged on the front and back of the base; and two guide blocks are symmetrically arranged on the front and back of the hatch fixing support, and each guide block is limited in a corresponding guide groove.

[0013] Further, the slider is provided with a shaft hole, a rotating shaft is installed in the shaft hole, and the rotating shaft is fixedly connected with the hatch fixing support to realize the rotating connection between the hatch fixing support and the slider.

[0014] Further, a shaft sleeve is arranged between the rotating shaft and the shaft hole.

[0015] Further, the hatch fixing support is J-shaped.

[0016] Further, the slider is provided with a handle.

[0017] Further, it further comprises:

[0018] The first chain structure is formed by connecting a plurality of first chain blocks in series through shaft holes; and a first end of the first chain structure is rotatably connected to the front side of the base.

[0019] The second chain structure is connected in series by a plurality of second chain blocks through an axle hole connection mode; a first end of the second chain structure is rotationally connected to the rear side of the base; and a second end of the second chain structure is connected to a second end of the first chain structure, so that the first chain structure and the second chain structure form the annular chain fastening structure.

[0020] Further, the second end of the second chain structure is detachably connected to the second end of the first chain structure through a universal joint bolt and a butterfly nut.

[0021] Further, all contact surfaces of the first chain blocks and the second chain blocks that are in direct contact with the pressure-resistant container barrel are arc surfaces.

[0022] As can be seen from the above, the quick disassembly and assembly device for the pressure-resistant container hatch cover provided by the application realizes a unique movement mode combining translation and rotation of the pressure-resistant container hatch cover during disassembly and assembly through the ingenious cooperation of the guide groove mechanism, the annular chain fastening structure and the sliding block. Specifically, the guide block guides the hatch cover fixing bracket to drive the pressure-resistant container hatch cover to translate in the left-right direction in the linear segment, ensuring that the hatch cover and the pressure-resistant container barrel always remain coaxial, thereby effectively solving the problems of jamming and damage to the sealing surface caused by insufficient coaxiality in the prior art. Subsequently, the guide block guides the hatch cover fixing bracket to drive the pressure-resistant container hatch cover to rotate in the arc segment, so that the hatch cover can translate at the shortest distance after being separated from the barrel and give up the excess space by rotating in the case of limited space, greatly improving the space utilization and solving the problem that the pressure-resistant container cannot be translated infinitely after being opened in a compact structure such as underwater equipment. In addition, the sliding block and sliding groove structure design significantly reduces the friction during the disassembly and assembly of the hatch cover, reduces the dependence on manpower and labor costs, and makes the disassembly and assembly process more stable and controllable. The entire device can also serve as a temporary storage point for the hatch cover, ensuring good repeatability of disassembly and assembly, thereby reducing the time cost to a certain extent. In summary, the quick disassembly and assembly device for the pressure-resistant container hatch cover of the application effectively overcomes the many shortcomings of the prior art, such as great disassembly and assembly difficulty, low efficiency, easy damage and limited space, and has significant technical progress and practical value.

[0023] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application as set forth in the written description and claims. The purposes and other advantages of the present application will be realized and attained by the structures particularly pointed out in the written description and claims. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The quick disassembly and assembly device for the pressure-resistant container hatch cover provided by the application is assembled with the pressure-resistant container.

[0025] Figure 2A structural schematic diagram of a quick dismounting device for a pressure-resistant container cabin cover is provided for an embodiment of the present application.

[0026] Figure 3 An exploded view of the structure of a sliding block in an embodiment of the present application.

[0027] Figure 4 A structural schematic diagram of a base in an embodiment of the present application.

[0028] Figure 5 A schematic diagram of a process of dismounting a pressure-resistant container cabin cover by using the quick dismounting device for a pressure-resistant container cabin cover in an embodiment of the present application.

[0029] Label explanation:

[0030] 100, base; 110, sliding groove; 120, guide groove; 121, straight line segment; 122, arc line segment; 200, ring chain fastening structure; 210, first chain structure; 211, first chain block; 220, second chain structure; 221, second chain block; 230, joint bolt; 240, butterfly nut; 300, pressure-resistant container cylinder; 400, pressure-resistant container cabin cover; 500, sliding block; 510, cabin cover fixing support; 511, guide block; 520, shaft hole; 530, rotating shaft; 540, shaft sleeve; 550, handle. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, in which the same or similar numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, the application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0036] It should be noted that the "front-rear direction", "left-right direction" and "up-down direction" described below are based on the drawings as a reference. Figure 1 and the arrows marked as references. Figure 2

[0037] Referring to the drawings Figure 1 , the drawings Figure 2 , the drawings Figure 3 , the drawings Figure 4 and the drawings Figure 5 , the application provides a quick dismounting device for pressure vessel cabin cover, which is used for dismounting pressure vessel cabin cover, comprising:

[0038] ​The guide groove mechanism comprises a base 100 provided with a sliding groove 110 and a guide groove 120, and the guide groove 120 comprises a straight line segment 121 and an arc line segment 122;

[0039] The annular chain type fastening structure 200 is connected with the guide groove mechanism and can be wrapped and fixed on the circumferential side of the pressure-resistant container cylinder 300, so as to stabilize the base 100, so that the pressure-resistant container hatch 400 can be safely opened and closed;

[0040] The sliding block 500 is slidingly arranged on the sliding groove 110 and can reciprocate in the left-right direction, and the sliding block 500 is provided with a hatch fixing support 510 which can be rotated and fixedly connected with the pressure-resistant container hatch 400; the hatch fixing support 510 is provided with a guide block 511 which is limited in the guide groove 120, so that the guide block 511 drives the hatch fixing support 510 to drive the pressure-resistant container hatch 400 to move horizontally along the left-right direction when the guide block 511 is in the straight line segment 121, so that the pressure-resistant container hatch 400 is coaxial with the pressure-resistant container cylinder 300, and the guide block 511 drives the hatch fixing support 510 to drive the pressure-resistant container hatch 400 to rotate when the guide block 511 is in the arc line segment 122, so that the pressure-resistant container hatch 400 is first separated from the pressure-resistant container cylinder 300 by horizontal movement when the pressure-resistant container hatch 400 is opened, and the horizontal movement ensures that the pressure-resistant container hatch 400 is coaxial with the pressure-resistant container cylinder 300, thereby avoiding the problems of jamming and damage to the sealing surface during disassembly; in actual engineering applications, the space for disassembling the pressure-resistant container is often limited, especially for the pressure-resistant container in underwater equipment, in order to improve the space utilization and reduce the cost, the designer will design the underwater equipment into a compact structure, so that the pressure-resistant container hatch cannot be translated infinitely after being opened, and in the case of limited space, the pressure-resistant container hatch 400 is then rotated, so that the pressure-resistant container hatch 400 only needs to be translated to the pressure-resistant container cylinder 300 at the shortest distance, and then the excess space can be left for the maintenance personnel to work by rotating, the design of the guide groove 120 reasonably plans the hatch disassembly path, and the risk of collision of the hatch disassembly sealing surface is reduced; at the same time, the sliding block and sliding groove structure design is adopted, the low friction of the hatch disassembly process is realized, the labor cost of the hatch disassembly is reduced, the disassembly process is more stable and controllable, and the dependence on artificial in the disassembly process is reduced; in addition, the entire pressure-resistant container hatch quick disassembly device can be used as a temporary storage point of the hatch, so that the hatch disassembly has good repeatability, and the time cost is reduced to a certain extent.

[0041] The above technical scheme effectively solves the problems of difficulty in ensuring coaxiality, easy jamming, damage to the sealing surface and limited space in the disassembly process of the pressure-resistant container hatch in the prior art, and significantly improves the disassembly efficiency, safety and space utilization.

[0042] Wherein, the pressure vessel cylinder 300 refers to the main part of the pressure vessel, usually cylindrical or approximately cylindrical, used to withstand internal or external pressure. The pressure vessel hatch 400 refers to the part used to close the opening of the pressure vessel cylinder 300, which is usually tightly connected with the pressure vessel cylinder 300 through flanges, bolts, etc. to ensure the sealing and pressure resistance of the container.

[0043] The quick disassembly and assembly device for the pressure vessel hatch of the present application is characterized by the ingenious mechanical structure design, which realizes accurate control and path optimization during the disassembly and assembly process of the hatch.

[0044] Specifically, the device includes a guide slot mechanism. The guide slot mechanism is the support and guide core of the entire device, and its base 100 can be designed in various forms, for example, it can be a solid metal plate or frame structure, which is fixed on the working platform by welding, bolt connection, etc. The base 100 is provided with a sliding groove 110 and a guide groove 120. The sliding groove 110 can be designed as a straight slot, and its inner surface is precisely machined to ensure smooth sliding of the sliding block 500. The guide groove 120 can be composed of two parts: a straight section 121 and an arc section 122. The straight section 121 can be designed as a straight track parallel to the sliding groove 110, and the arc section 122 can be designed as a curved track smoothly connected with the straight section 121, for example, it can be a quarter circle arc or a more complex curve to meet the specific rotation requirements.

[0045] The ring chain fastening structure 200 is a key component for stabilizing and fixing the entire device on the pressure vessel cylinder 300. The ring chain fastening structure 200 can be composed of a series of adjustable length chains, buckles or clamps, which can be fixed around the circumference of the pressure vessel cylinder 300. For example, a plurality of chain links can be connected by a pin shaft to form a ring structure with adjustable circumference, which is fastened on the pressure vessel cylinder 300 by a tightening mechanism (such as a screw, ratchet, etc.). This structure ensures that the base 100 remains stable during the disassembly and assembly process of the hatch, thereby ensuring that the pressure vessel hatch 400 can be safely opened and closed.

[0046] The slider 500 is an execution component for realizing the translation and rotation of the hatch. The slider 500 can be a rectangular or square metal block, the bottom of which is matched with the shape of the sliding groove 110 and is slidably arranged on the sliding groove 110 through a ball bearing, a sliding bearing or a polymer bushing, so as to be able to reciprocate along the left-right direction. A hatch fixing support 510 that can rotate is arranged on the slider 500. The hatch fixing support 510 can be an L-shaped or J-shaped metal component, one end of which is fixedly connected with the pressure vessel hatch 400 through a bolt, a clamp or a quick connection mechanism, and the other end is connected with the slider 500 through a rotating shaft, so as to realize the rotation of the hatch fixing support 510 relative to the slider 500. A guide block 511 is further arranged on the hatch fixing support 510. The guide block 511 can be a cylindrical or square protrusion, the size and shape of which are matched with the guide groove 120 and are limited in the guide groove 120. When the slider 500 moves on the sliding groove 110, the guide block 511 moves along the path of the guide groove 120, thereby guiding the translation and rotation of the hatch fixing support 510 and the pressure vessel hatch 400.

[0047] In actual operation, when the pressure vessel hatch 400 needs to be opened, first, the operator will push the slider 500 to move outward along the sliding groove 110. At this time, the guide block 511 moves in the straight line segment 121 of the guide groove 120, so that the hatch fixing support 510 drives the pressure vessel hatch 400 to translate along the left-right direction. This translation ensures that the pressure vessel hatch 400 always remains coaxial during the process of separating from the pressure vessel barrel 300, thereby effectively avoiding the problems of jamming and damage to the sealing surface due to deviation from the axis. Once the pressure vessel hatch 400 is completely separated from the pressure vessel barrel 300 through translation, the guide block 511 enters the arc segment 122 of the guide groove 120. At this time, the arc segment 122 of the guide groove 120 guides the guide block 511 to rotate, thereby driving the hatch fixing support 510 and the pressure vessel hatch 400 to rotate. This rotation enables the pressure vessel hatch 400 to quickly rotate to provide sufficient space for maintenance personnel to work after separating from the pressure vessel barrel 300 with the smallest translation distance.

[0048] The quick disassembly and assembly device for the pressure vessel hatch of the present application realizes the quick and safe disassembly and assembly of the pressure vessel hatch 400 through the coordinated action of the guide groove mechanism, the annular chain type fastening structure 200, the slider 500 and the hatch fixing support 510.

[0049] Specifically, when disassembling and assembling the pressure vessel hatch 400, first, the annular chain type fastening structure 200 is fixed around the circumferential side of the pressure vessel barrel 300, thereby stably fixing the base 100 of the guide groove mechanism on the pressure vessel barrel 300. This fixing mode ensures that the entire device will not be displaced or shaken during the hatch disassembly and assembly process, thereby providing a stable basis for subsequent operation.

[0050] Subsequently, the hatch fixing support 510 is fixedly connected with the pressure vessel hatch 400. At this time, the pressure vessel hatch 400 is connected with the sliding block 500 through the hatch fixing support 510, and the sliding block 500 is slidingly arranged on the sliding groove 110 of the base 100.

[0051] When it is necessary to open the pressure vessel hatch 400, an operator moves the sliding block 500 outward along the sliding groove 110 by applying an external force (for example, by manually pushing or pulling or by means of a driving mechanism). In the initial stage of movement of the sliding block 500, the guide block 511 on the hatch fixing support 510 is limited in the straight line segment 121 of the guide groove 120. Since the guide block 511 can only move linearly in the straight line segment 121, the hatch fixing support 510 drives the pressure vessel hatch 400 to translate in the left-right direction. This translation ensures that the pressure vessel hatch 400 always maintains coaxiality with the pressure vessel cylinder 300 during the process of being separated from the stop of the pressure vessel cylinder 300. This is crucial for avoiding jamming and damage to the sealing surface between the hatch and the cylinder due to friction or collision.

[0052] Once the pressure vessel hatch 400 is completely separated from the stop of the pressure vessel cylinder 300 by translation, the guide block 511 enters the arc segment 122 along the path of the guide groove 120. At this time, the arc segment 122 of the guide groove 120 guides the guide block 511 to rotate, thereby driving the hatch fixing support 510 and the pressure vessel hatch 400 to rotate. This rotation enables the pressure vessel hatch 400 to quickly rotate to the side after completing the necessary translation, thereby providing sufficient operating space for maintenance personnel.

[0053] The entire disassembly and assembly process realizes smooth and controllable movement of the pressure vessel hatch 400, effectively reducing friction and labor costs during the disassembly and assembly process. In addition, since the entire device can serve as a temporary storage point for the hatch, the hatch disassembly and assembly has good repeatability, further reducing time costs.

[0054] The pressure vessel hatch quick disassembly and assembly device of the present application has significant technological progress and innovation compared to traditional hatch disassembly and assembly methods. Traditional existing hatch disassembly and assembly methods, especially for heavy pressure vessel hatches with high-precision stops, often require 2 to 3 workers to work together, and are prone to jamming and damage to the sealing surface due to the inability to ensure coaxiality. In addition, in a space-limited working environment, the difficulty and risk of disassembly and assembly of the traditional method are further increased.

[0055] The core innovation of the present application lies in the unique guide groove mechanism and the linkage design of the sliding block 500 and the hatch cover fixed support 510. By setting the guide groove 120 including the straight line segment 121 and the arc line segment 122, the present application realizes the "first translation and then rotation" compound motion mode of the pressure vessel hatch cover 400 during disassembly. Specifically, when opening the pressure vessel hatch cover 400, the hatch cover fixed support 510 drives the pressure vessel hatch cover 400 to first separate from the pressure vessel cylinder body 300 by translation, and this translation process is guided by the movement of the guide block 511 in the straight line segment 121 of the guide groove 120, ensuring that the pressure vessel hatch cover 400 and the pressure vessel cylinder body 300 always remain coaxial, thereby completely avoiding the common problems of jamming and damage to the sealing surface in the traditional way. Subsequently, the guide block 511 enters the arc line segment 122 of the guide groove 120, guiding the hatch cover fixed support 510 to drive the pressure vessel hatch cover 400 to rotate. This rotation design is particularly important in space-limited scenarios, as it allows the pressure vessel hatch cover 400 to only translate a minimum distance to separate from the pressure vessel cylinder body 300, and then rotate to create extra space, greatly improving space utilization and providing convenience for maintenance personnel.

[0056] In addition, the present application adopts a sliding block and sliding groove structure design, which realizes low friction during the disassembly process of the hatch cover, significantly reduces labor costs, makes the disassembly process more stable and controllable, and reduces the dependence on manual labor. The introduction of the annular chain type fastening structure 200 ensures the stable fixation of the base 100, further improving the safety of disassembly. The entire device can also serve as a temporary storage point for the hatch cover, ensuring good repeatability of the hatch cover disassembly, thereby reducing the time cost to a certain extent.

[0057] In summary, the pressure vessel hatch cover quick disassembly device of the present application effectively solves the disassembly problems existing in the prior art through its innovative structure design and motion path planning, significantly improves the disassembly efficiency, safety and space utilization, and has significant practical value and technical progressiveness.

[0058] In some embodiments, reference is made to the accompanying drawings Figure 3 The base 100 is provided with two symmetrical groups of sliding grooves, each group including two sliding grooves 110 arranged symmetrically front and back; the sliding block 500 is slidingly arranged on all the sliding grooves 110, and the four sliding grooves 110 can ensure that the sliding block 500 better withstands the weight of the pressure vessel hatch cover 400, and also ensures smooth movement of the sliding block 500, thereby ensuring the coaxiality of the pressure vessel hatch cover 400 and the pressure vessel cylinder body 300 during movement.

[0059] The two sets of symmetrically arranged slide grooves on the base 100 are arranged symmetrically on the top and bottom of the base 100, so as to achieve structural balance and symmetric support. Each set of slide grooves further includes two slide grooves 110 arranged symmetrically in front and back, which means that each set of slide grooves contains two slide grooves 110 arranged symmetrically in front and back on the front and rear sides of the base 100, thereby providing additional support points in the horizontal direction. Thus, the sliding block 500 is arranged to slide on all four slide grooves 110. This multi-groove arrangement aims to increase the load-bearing capacity and running stability of the entire sliding block 500 system by increasing the number of support points and dispersing the load.

[0060] The scheme of the present application provides two sets of symmetrically arranged slide grooves on the base 100, and each set of slide grooves includes two slide grooves 110 arranged symmetrically in front and back, so that the sliding block 500 can slide on the four slide grooves 110 at the same time. This multi-point support structure design evenly distributes the weight of the pressure-resistant container hatch cover 400 to four support points, significantly increasing the load-bearing area and stability of the sliding block 500. It is precisely because of this uniform and multi-point support that the sliding block 500 can maintain a more stable moving posture when the pressure-resistant container hatch cover 400 is moving or rotating, effectively preventing the shaking or tilting that may occur due to single-point or small-point support, thereby ensuring that the pressure-resistant container hatch cover 400 maintains a high degree of coaxiality with the pressure-resistant container cylinder 300 throughout the disassembly and assembly process.

[0061] Through the above technical scheme, since the sliding block 500 is supported by four slide grooves 110, the load-bearing capacity and running stability of the device are greatly improved. This not only effectively avoids the shaking or jamming problems that may occur when disassembling and assembling heavy pressure-resistant container hatch covers 400, but also ensures the precise coaxiality of the pressure-resistant container hatch cover 400 with the pressure-resistant container cylinder 300 during movement, thereby significantly reducing the risk of damage to the sealing surface and improving the safety, reliability and efficiency of the disassembly and assembly operation.

[0062] In some embodiments, reference is made to the accompanying drawings Figure 3 The base 100 is symmetrically provided with two guide grooves 120 on the front and rear sides; the hatch cover fixing bracket 510 is symmetrically provided with two guide blocks 511 on the front and rear sides, each guide block 511 is limited in a corresponding guide groove 120, and the two guide grooves 120 support the hatch cover fixing bracket 510, ensuring the load-bearing capacity and movement stability of the hatch cover fixing bracket 510.

[0063] Specifically, the guide grooves 120 arranged on the base 100 are no longer a single structure, but are designed as two symmetrical structures distributed on the front and back sides. Correspondingly, the cover fixing bracket 510 fixedly connected with the pressure-resistant container cover 400 is also provided with two guide blocks 511, which are also symmetrically distributed on the front and back sides of the cover fixing bracket 510. Each guide block 511 is accurately limited in the corresponding guide groove 120. The symmetrical arrangement of the double guide grooves 120 and the double guide blocks 511 aims to provide more stable support for the cover fixing bracket 510, thereby significantly improving the overall carrying capacity and stability during movement.

[0064] The scheme of the present application provides two guide grooves 120 symmetrically arranged on the front and back sides of the base 100, and two guide blocks 511 symmetrically arranged on the front and back sides of the cover fixing bracket 510, so that the weight and stress of the pressure-resistant container cover 400 during disassembly can be more evenly distributed to the two guide grooves 120 and the guide blocks 511. Due to the symmetrical and double support structure, the cover fixing bracket 510 can effectively resist the overturning moment or eccentric load that may be generated when driving the pressure-resistant container cover 400 to move horizontally or rotate, thereby avoiding the risk of shaking, jamming or damage to the sealing surface caused by single-point or asymmetric support. In addition, the cooperation of the two guide grooves 120 and the guide blocks 511 forms a more stable guide system, ensuring that the pressure-resistant container cover 400 always maintains accurate coaxiality and smooth movement trajectory during the entire disassembly path.

[0065] Through the above technical scheme, since the two guide grooves 120 and the two guide blocks 511 are symmetrically arranged on the front and back sides, the cover fixing bracket 510 obtains more balanced and powerful support. This not only significantly improves the carrying capacity of the device for the heavy pressure-resistant container cover 400, but also greatly enhances the movement stability of the pressure-resistant container cover 400 when moving horizontally and rotating. Thus, the risk of collision between the pressure-resistant container cover 400 and the pressure-resistant container cylinder 300 due to uneven stress or shaking during disassembly is effectively avoided, further reducing the risk of damage to the sealing surface and ensuring the smoothness and safety of the disassembly operation, thereby improving the reliability and service life of the overall device.

[0066] In some embodiments, reference is made to the accompanying drawings Figure 3 The sliding block 500 is provided with a shaft hole 520, and a rotating shaft 530 is installed in the shaft hole 520. The rotating shaft 530 is fixedly connected with the cover fixing bracket 510 to realize the rotating connection between the cover fixing bracket 510 and the sliding block 500.

[0067] Specifically, the shaft hole 520 refers to a hole formed on the slider 500 for accommodating the rotating shaft 530, which is designed in size and shape to match the rotating shaft 530 to provide a stable mounting base. The rotating shaft 530 can be understood as a cylindrical or rod-shaped member with a specific cross-section, which is mounted at one end or in the middle in the shaft hole 520, and the other end or corresponding part is fixedly connected with the hatch fixed support 510. The fixed connection between the rotating shaft 530 and the hatch fixed support 510 can be achieved by welding, bolting, keying or interference fit, etc., the purpose of which is to ensure that the hatch fixed support 510 can rotate with the rotating shaft 530 and maintain structural integrity and stability during rotation.

[0068] The scheme of the present application sets the shaft hole 520 on the slider 500 and installs the rotating shaft 530, and at the same time, the rotating shaft 530 is fixedly connected with the hatch fixed support 510, so that the hatch fixed support 510 can rotate around the axis of the rotating shaft 530 relative to the slider 500. This bearing type of rotary connection concentrates the rotation function at the matching part of the shaft hole 520 and the rotating shaft 530, effectively disperses the stress during rotation, and provides a clear rotation center. Therefore, when the hatch fixed support 510 drives the pressure-resistant container hatch 400 to rotate, the rotation process will be more stable and controllable, avoiding the shaking or jamming phenomenon caused by unclear connection or loose structure, thereby improving the operation reliability of the entire dismounting device.

[0069] Through the above technical scheme, the rotary connection structure between the hatch fixed support 510 and the slider 500 is clearly defined, making the rotation process more stable and accurate. This structured rotary connection method not only effectively reduces the friction and wear between the rotating parts, prolonging the service life of the device, but also ensures that the pressure-resistant container hatch 400 moves smoothly along the preset path during rotation, further reducing the risk of damage to the sealing surface during dismounting, improving the safety and efficiency of the operation.

[0070] In some embodiments, reference is made to the accompanying drawings Figure 3 In some embodiments, a shaft sleeve 540 is provided between the rotating shaft 530 and the shaft hole 520 to reduce wear.

[0071] Specifically, the shaft sleeve 540 refers to an annular bushing arranged between the rotating shaft 530 and the shaft hole 520. The shaft sleeve 540 is usually made of a material with good wear resistance and low friction coefficient, such as bronze, engineering plastics (such as polytetrafluoroethylene), or composite materials, etc. Its main function is to act as a sliding or rotating interface between the rotating shaft 530 and the shaft hole 520, and to bear the relative movement and friction between the two. In practical applications, the shaft sleeve 540 can be pressed into the shaft hole 520, or have an interference fit with the rotating shaft 530, to ensure that it remains stable during rotation. The design purpose is to concentrate wear on the shaft sleeve 540, which is easy to replace, thereby protecting the main structure (rotating shaft 530 and shaft hole 520) from direct wear.

[0072] The scheme of the present application introduces the shaft sleeve 540 between the rotating shaft 530 and the shaft hole 520, so that when the rotating shaft 530 rotates in the shaft hole 520, the relative rotation occurs between the rotating shaft 530 and the shaft sleeve 540, or between the shaft sleeve 540 and the shaft hole 520, or all three. Since the shaft sleeve 540 is usually made of a material that is more wear-resistant and has a lower friction coefficient than the materials of the rotating shaft 530 and the shaft hole 520, and is designed as a component that is easy to replace, when wear occurs, the main wear is concentrated on the shaft sleeve 540. It is precisely because of the presence of the shaft sleeve 540 that the direct metal-to-metal friction is converted into metal-to-axle sleeve material friction, thereby significantly reducing the frictional resistance and effectively dispersing the contact stress, and delaying the wear rate of the rotating shaft 530 and the shaft hole 520.

[0073] Through the above technical scheme, the shaft sleeve 540 is introduced between the rotating shaft 530 and the shaft hole 520, effectively concentrating wear on the replaceable shaft sleeve 540, thereby significantly reducing the direct wear of the rotating shaft 530 and the shaft hole 520. This not only prolongs the service life of the entire rotating connection mechanism and reduces the risk of failure due to wear, but also only needs to replace the low-cost shaft sleeve 540 to restore the performance of the device when maintenance is required, greatly reducing maintenance costs and time, and improving the economy and reliability of the device.

[0074] In some embodiments, reference is made to the accompanying drawings Figure 3 The hatch fixing bracket 510 is J-shaped, and the J-shaped hatch fixing bracket 510 ensures the coaxiality of the pressure-resistant container hatch 400 and the pressure-resistant container barrel 300 during translation with a simple structure, and cooperates with the guide groove 120 to make the hatch fixing bracket 510 rotate in an eccentric manner, realizing a larger range of accommodation and being more conducive to the work of maintenance personnel.

[0075] Specifically, the J-shaped hatch fixing bracket 510 is designed to have a specific geometric configuration, the J-shaped curved portion of which can be reliably connected with the pressure vessel hatch 400, and the J-shaped straight portion of which is integrated or matched with the guide block 511 to achieve a specific motion trajectory during rotation. This J-shaped structure aims to ensure the coaxiality of the pressure vessel hatch 400 and the pressure vessel cylinder 300 during the translation of the pressure vessel hatch 400, avoiding jamming or damage to the sealing surface during the initial separation stage, with a relatively simple mechanical configuration. In addition, the J-shaped structure can also cooperate with the guide groove 120, so that the hatch fixing bracket 510 can rotate in an eccentric motion manner during the rotation stage. The eccentric motion can be understood as the center of rotation of the hatch fixing bracket 510 is not fixed at the geometric center of the pressure vessel hatch 400, but through the design of the J-shaped structure, the pressure vessel hatch 400 can move outward or to the side during rotation, thereby achieving a larger displacement range than traditional central rotation. The purpose is to maximize the working space for maintenance personnel in a limited space, and improve the maintenance efficiency and convenience.

[0076] The scheme of the present application designs the hatch fixing bracket 510 as J-shaped, which can stably support the pressure vessel hatch 400 during the translation of the pressure vessel hatch 400, and cooperate with the straight line segment 121 of the guide groove 120 to ensure the smooth movement of the pressure vessel hatch 400 along the straight line path, thereby maintaining the coaxiality of the pressure vessel hatch 400 and the pressure vessel cylinder 300, effectively avoiding jamming and damage to the sealing surface during disassembly. When the pressure vessel hatch 400 completes the translation separation and enters the rotation stage, the special geometric shape of the J-shaped hatch fixing bracket 510 interacts with the arc segment 122 of the guide groove 120. The movement of the guide block 511 in the arc segment 122, combined with the eccentric design of the J-shaped bracket, enables the hatch fixing bracket 510 to drive the pressure vessel hatch 400 to rotate eccentrically. This eccentric rotation mechanism enables the pressure vessel hatch 400 to move outward or to the side during rotation, thereby effectively expanding the space after the pressure vessel hatch 400 is opened without increasing the translation distance, providing a more spacious working area for maintenance personnel.

[0077] Through the above technical scheme, the J-shaped hatch fixing bracket 510, with its unique structure, not only ensures the coaxiality of the pressure vessel hatch 400 and the pressure vessel cylinder 300 during the translation stage, but more importantly, through cooperation with the guide groove 120, realizes the eccentric rotation of the pressure vessel hatch 400 during the rotation stage. This eccentric rotation can significantly increase the displacement range after the pressure vessel hatch 400 is opened, thereby providing more sufficient working space for maintenance personnel in a limited space, greatly improving the convenience and efficiency of maintenance work, and effectively solving the problem of inconvenient maintenance work in a limited space in the traditional scheme.

[0078] In some embodiments, reference is made to the accompanying drawings Figure 3 The slider 500 is provided with a handle 550, and an operator can pull the slider 500 through the handle 550 to realize the disassembly and assembly of the pressure-resistant container cover 400.

[0079] Specifically, the handle 550 refers to a component that is convenient for manual gripping and force exertion, which is fixedly arranged on the outside of the slider 500 to facilitate the operator to directly contact and exert a pushing and pulling force. The handle 550 can adopt various forms, for example, it can be a rod, a ring, or an ergonomic designed grip, and its material can be selected from metal, engineering plastic, or other durable materials. The purpose is to provide the operator with a direct and convenient force point to realize accurate control and movement of the slider 500, thereby driving the pressure-resistant container cover 400 to complete the disassembly and assembly process.

[0080] The scheme of the present application sets the handle 550 on the slider 500, so that the operator can directly and conveniently exert force on the slider 500. When the pressure-resistant container cover 400 needs to be disassembled or assembled, the operator can pull or push the slider 500 along the direction of the sliding groove 110 by gripping the handle 550. The slider 500 is driven by the handle 550 to move the guide block 511 along the preset guide groove 120 path, thereby driving the cover fixing bracket 510 to complete the translation and rotation of the pressure-resistant container cover 400, and realizing the disassembly and assembly of the cover. This design simplifies the operation process, reduces the dependence on additional tools, and improves the intuitiveness and convenience of manual operation.

[0081] Through the above technical scheme, since the handle 550 is arranged on the slider 500, the operator can directly push and pull the slider 500 through the handle 550, greatly improving the convenience of manual operation during the disassembly and assembly of the pressure-resistant container cover 400. This not only reduces the complexity of the operation and reduces the physical exertion of the operator, but also makes the disassembly and assembly process more intuitive and controllable, thereby improving the use efficiency and user experience of the overall device, and effectively solving the inconvenience problem that may exist in the basic scheme.

[0082] In some embodiments, reference is made to the accompanying drawings Figure 2 Further comprising:

[0083] The first chain structure 210 is connected in series by a plurality of first chain blocks 211 through shaft hole connection; the first end of the first chain structure 210 is rotatably connected to the front side of the base 100;

[0084] The second chain structure 220 is formed by a plurality of second chain blocks 221 connected in series through shaft hole connection. The first end of the second chain structure 220 is rotatably connected to the rear side of the base 100. The second end of the second chain structure 220 is connected to the second end of the first chain structure 210, so that the first chain structure 210 and the second chain structure 220 form a ring-shaped chain fastening structure 200. The number of chain blocks can be increased or decreased according to the size of the pressure vessel cylinder 300, so as to adapt to the disassembly and assembly of the hatch of pressure vessels of different specifications.

[0085] Specifically, the first chain structure 210 and the second chain structure 220 can be understood as a series of independent chain blocks, i.e., first chain blocks 211 and second chain blocks 221, connected in series through shaft hole connection. This chain connection method makes the entire structure have good bendability and can conform to the circular side of the pressure vessel cylinder 300 for embracing. The first end of the first chain structure 210 is designed to be rotatably connected to the front side of the base 100, and the first end of the second chain structure 220 is rotatably connected to the rear side of the base 100. This rotatable connection ensures that the chain structure can flexibly change the angle during embracing and adjusting, so as to better fit the pressure vessel cylinder 300. Further, the second end of the first chain structure 210 is connected to the second end of the second chain structure 220, thereby forming a complete ring-shaped structure, i.e., a ring-shaped chain fastening structure 200, which aims to realize the circumferential fastening of the pressure vessel cylinder 300. In practical application, in order to adapt to pressure vessel cylinders 300 of different specifications, the operator can adjust the overall circumference of the ring-shaped chain fastening structure 200 by increasing or decreasing the number of first chain blocks 211 and second chain blocks 221 according to actual needs, so as to ensure that the device can be widely applied to pressure vessels of different diameters.

[0086] The technical scheme of the present application effectively solves the problem of poor adaptability of the ring-shaped fastening structure to different specifications of the pressure vessel cylinder 300 by specifically designing the ring-shaped chain fastening structure 200 as an adjustable first chain structure 210 and a second chain structure 220. It is because the first chain structure 210 and the second chain structure 220 are both connected in series by a plurality of detachable first chain blocks 211 and second chain blocks 221 through shaft hole connection that the operator can flexibly increase or decrease the number of chain blocks according to the actual diameter of the pressure vessel cylinder 300 to be disassembled or assembled. When the diameter of the pressure vessel cylinder 300 is large, the circumference of the ring-shaped chain fastening structure 200 can be lengthened by adding chain blocks so that it can completely embrace and fasten the cylinder; on the contrary, when the diameter of the pressure vessel cylinder 300 is small, the circumference of the ring-shaped chain fastening structure 200 can be shortened by reducing the number of chain blocks, so as to achieve close fitting. In addition, the first end of the first chain structure 210 and the second chain structure 220 is rotationally connected to the base 100, which further ensures that the chain structure can smoothly change the angle during adjustment and fastening, ensuring the stability and reliability of the embrace.

[0087] Through the above technical scheme, the quick disassembly and assembly device for the pressure vessel hatch cover of the present application significantly improves its adaptability and versatility to different specifications of the pressure vessel cylinder 300. The adjustable ring-shaped chain fastening structure 200 avoids the need to provide multiple sets of special fastening devices for different sizes of pressure vessels, thereby effectively reducing equipment procurement and maintenance costs. At the same time, since it can be accurately adjusted according to the actual size, it ensures that the base 100 can be stably and reliably fixed to the pressure vessel cylinder 300 in any case, thereby ensuring the safety and coaxiality of the pressure vessel hatch cover 400 during disassembly and assembly, and reducing the potential risks caused by unstable fixation.

[0088] In some embodiments, reference is made to the accompanying drawings Figure 2 The second end of the second chain structure 220 is detachably connected to the second end of the first chain structure 210 through a universal joint bolt 230 and a wing nut 240.

[0089] Specifically, the universal joint bolt 230 can be understood as a bolt with a ring-shaped head or a hinged structure, one end of which can be connected to one end of the chain structure, and the other end can pass through the end hole of the other chain structure. The wing nut 240 is a nut with a wing-shaped handle, which is designed to facilitate the operator to tighten or loosen it by hand without the need for additional tools. Through the cooperation of the universal joint bolt 230 and the wing nut 240, the connection of the first chain structure 210 and the second chain structure 220 is achieved, and this connection method is detachable, that is, it can be easily connected and separated.

[0090] The detachable connection of the first chain structure 210 and the second chain structure 220 is achieved by adopting the articulated bolt 230 and the wing nut 240. Specifically, one end of the articulated bolt 230 can be hinged with or pass through the hole of the end of one of the chain structures, and the other end passes through the end of the other chain structure and is fastened by the wing nut 240. The design of the wing nut 240 allows the operator to tighten or loosen it by hand without the help of additional tools, thereby quickly completing the connection or separation of the chain structure. This connection method enables the operator to conveniently adjust the circumference of the annular chain fastening structure 200 according to different specifications of the pressure vessel cylinder 300, such as by increasing or decreasing the number of first chain blocks 211 or second chain blocks 221 to adapt to different cylinder sizes. At the same time, this detachable connection greatly simplifies the operation process during installation, disassembly, or daily maintenance of the device, improving work efficiency.

[0091] Through the above technical solution, the connection method of the annular chain fastening structure 200 is optimized, achieving quick and convenient detachable connection. This not only significantly improves the adaptability of the device to different specifications of the pressure vessel cylinder 300, enabling the operator to flexibly adjust the number of chain blocks to match various sizes, but also greatly simplifies the installation, disassembly, and maintenance process of the device, reducing the dependence on professional tools and manual operation, thereby effectively improving the overall device's flexibility, operation efficiency, and maintenance convenience.

[0092] In some embodiments, reference is made to the accompanying drawings Figure 2 In some embodiments, the contact surfaces of all first chain blocks 211 and second chain blocks 221 that directly contact the pressure vessel cylinder 300 are arc surfaces. For a cylindrical pressure vessel cylinder 300, the arc surfaces have a higher degree of fit with the circumference, which on the one hand strengthens the fixing force on the pressure vessel cylinder 300, is conducive to improving the stability of the pressure vessel hatch cover 400 assembly and disassembly, and on the other hand can avoid damage to the pressure vessel cylinder 300.

[0093] Specifically, the arc surface refers to a curved surface that matches the circumference of the pressure vessel cylinder 300. The arc surface design aims to maximize the contact area between the chain block and the pressure vessel cylinder 300, thereby achieving more uniform force distribution. In actual application, the curvature radius of the arc surface can be designed or adjusted according to the diameter of the pressure vessel cylinder 300 to be fixed to ensure the best fit effect.

[0094] The scheme of the present application designs the contact surface of the first chain block 211 and the second chain block 221 in direct contact with the pressure-resistant container barrel 300 as an arc surface, so that the chain block can better fit the circumferential surface of the cylindrical pressure-resistant container barrel 300. This arc surface fitting design significantly increases the contact area between the chain block and the barrel, thereby more evenly distributing the fastening force to the surface of the pressure-resistant container barrel 300, avoiding the local high stress concentration that may be caused by traditional planar contact. It is precisely because of the increase in contact area and the uniformization of force distribution that the annular chain fastening structure 200 can provide stronger fixing force, effectively improving the stability of the base 100, and thereby ensuring the coaxiality and safety of the pressure-resistant container hatch cover 400 during the disassembly process.

[0095] Through the above technical scheme, the arc surface contact design not only significantly strengthens the fixing force on the pressure-resistant container barrel 300, effectively improving the stability of the pressure-resistant container hatch cover 400 during the assembly and disassembly process, but also avoids causing scratches, indentations or other forms of damage to the surface of the pressure-resistant container barrel 300 due to uneven local stress, thereby prolonging the service life of the pressure-resistant container barrel 300 and reducing maintenance costs.

[0096] In the description of the present specification, the description referring to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the described embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0097] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A quick-release device for pressure vessel hatch covers, used for disassembling and assembling pressure vessel hatch covers, characterized in that, include: The guide groove mechanism includes a base (100), the base (100) is provided with a sliding groove (110) and a guide groove (120), the guide groove (120) includes a straight segment (121) and an arc segment (122). A ring-shaped chain fastening structure (200) is connected to the guide groove mechanism and can be fixed around the periphery of the pressure vessel cylinder (300) to stabilize the base (100) so that the pressure vessel hatch cover (400) can be safely opened and closed. A slider (500) is slidably disposed on the slide groove (110) and can reciprocate in the left and right directions. The slider (500) is provided with a rotatable hatch cover fixing bracket (510), which can be fixedly connected to the pressure vessel hatch cover (400). The hatch cover fixing bracket (510) is provided with a guide block (511), which is limited in the guide groove (120) so that the guide block (511) in the straight section (121) causes the hatch cover fixing bracket (510) to drive the pressure vessel hatch cover (400) to maintain the pressure vessel hatch cover (400) and the pressure vessel cylinder (300) coaxial by translating in the left and right directions, and the guide block (511) in the arc section (122) causes the hatch cover fixing bracket (510) to drive the pressure vessel hatch cover (400) to rotate.

2. The quick-release device for pressure vessel hatch covers according to claim 1, characterized in that, The base (100) is provided with two sets of sliding grooves symmetrically arranged vertically, each set of sliding grooves including two sliding grooves (110) symmetrically arranged front and back; the slider (500) is slidably arranged on all the sliding grooves (110).

3. The quick-release device for pressure vessel hatch covers according to claim 1, characterized in that, The base (100) has two guide grooves (120) symmetrically arranged on its front and rear sides; the hatch fixing bracket (510) has two guide blocks (511) symmetrically arranged on its front and rear sides, and each guide block (511) is limited in a corresponding guide groove (120).

4. The quick-release device for pressure vessel hatch covers according to claim 1, characterized in that, The slider (500) is provided with a shaft hole (520), and a rotating shaft (530) is installed in the shaft hole (520). The rotating shaft (530) is fixedly connected to the hatch cover fixing bracket (510) so as to realize the rotatable connection between the hatch cover fixing bracket (510) and the slider (500).

5. The quick-release device for pressure vessel hatch covers according to claim 4, characterized in that, A bushing (540) is provided between the rotating shaft (530) and the shaft hole (520).

6. The quick-release device for pressure vessel hatch covers according to claim 1, characterized in that, The hatch cover fixing bracket (510) is J-shaped.

7. The quick-release device for pressure vessel hatch covers according to claim 1, characterized in that, The slider (500) is provided with a handle (550).

8. The quick-release device for pressure vessel hatch covers according to claim 1, characterized in that, Also includes: The first chain structure (210) is formed by connecting multiple first chain blocks (211) in series through shaft holes; The first end of the first chain structure (210) is rotatably connected to the front side of the base (100); The second chain structure (220) is formed by connecting multiple second chain blocks (221) in series through shaft holes; the first end of the second chain structure (220) is rotatably connected to the rear side of the base (100); the second end of the second chain structure (220) is connected to the second end of the first chain structure (210) so that the first chain structure (210) and the second chain structure (220) constitute the ring chain fastening structure (200).

9. The quick-release device for pressure vessel hatch covers according to claim 8, characterized in that, The second end of the second chain structure (220) is detachably connected to the second end of the first chain structure (210) by means of a hinge bolt (230) and a wing nut (240).

10. The quick-release device for pressure vessel hatch cover according to claim 8, characterized in that, All the contact surfaces of the first chain block (211) and the second chain block (221) that are in direct contact with the pressure vessel cylinder (300) are curved surfaces.

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