An explosion-proof door locking component and door body of an explosion container

Abstract

The present invention discloses an explosion-proof door locking member and a door for an explosion container, belonging to the technical field of explosion test equipment. The door locking member includes a connecting member, on which a slope surface is provided. The connecting member further includes a push rod with a ball head at one end and a first driver for driving the push rod to move linearly. A spherical surface for contacting the slope surface is provided on one side of the ball head close to the other end of the push rod; the ball head is detachably connected to the connecting member or the slope surface is detachably connected to the connecting member; the slope surface being detachably connected to the connecting member means that: an inlay block is further included, the slope surface is the surface of the inlay block, and the inlay block is detachably connected to the connecting member. The door is an assembly formed by the door locking member and the explosion-proof door of the explosion container. By adopting the technical solution provided by this scheme, the structural design of the door locking member can be effectively simplified, the reliability of sealing the explosion container can be improved, and the maintenance convenience can be enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion test equipment, and particularly to an explosion-proof door locking member and a door body for an explosion container. Background Art

[0002] For practical applications, in the prior art, a large amount of theoretical research on explosion tests needs to be completed. The explosion container is an important device in the process of the above-mentioned theoretical research. It is a device that can confine the shock wave and fragments generated by an internal explosion within the container to protect people and objects outside from being harmed. It has a wide range of applications in scientific research, hazardous chemical transportation, public safety and other fields. Specifically, it can be used as follows: after the explosion container is sealed, the explosive inside it is detonated, and various parameters during the explosion instant or the explosion process are captured by a detection device arranged on the explosion container. By introducing the above parameters into a data acquisition / analysis instrument for data analysis, the required measured values can be obtained.

[0003] To achieve the confinement of shock waves and fragments, after the door body of the explosion container is closed, it is fixedly connected to the container body in a sealed connection form. Specifically, the connection is mostly completed by multiple bolts. This connection method requires manual operation, not only is the opening and closing operation of the door body troublesome, but also personnel need to be exposed to an uncomfortable environment caused by factors such as temperature and gas components; for the same sealing purpose but different means, such as in the technical solution with the application number CN202010832613.7 and the invention creation name of an explosion container quick-opening door structure and control process, an internal spline is provided on the head, and an external spline is provided on the wedge iron assembly. The above internal spline and external spline both have inclined surfaces, and the inclined surfaces on the internal spline and the external spline match each other. Through the contact of the inclined surfaces, the sealed connection of the explosion container door structure is realized. This solution has the characteristics of being able to quickly open and close the container, having a simple structure form, and being convenient and fast to operate.

[0004] Further optimizing the structural design of the explosion test equipment to solve problems such as structural design complexity, potential safety hazards, and service life issues undoubtedly has important significance for the development of explosion test equipment and technology. Summary of the Invention

[0005] To solve the technical problems of further optimizing the structural design of the explosion test equipment to solve problems such as structural design complexity, potential safety hazards, and service life issues, which undoubtedly has important significance for the development of explosion test equipment and technology, the present invention provides an explosion-proof door locking member and a door body for an explosion container. By adopting the technical solution provided by this solution, the structural design of the door locking member can be effectively simplified, the reliability of the explosion container seal can be improved, and the maintenance convenience can be enhanced.

[0006] The purpose of the present invention is mainly achieved through the following technical solutions:

[0007] An explosion-proof door locking member for an explosion container, comprising a connecting member for realizing the sealed connection between the door leaf and the door frame. A slope is provided on the connecting member, and the height direction of the slope is along the thickness direction of the door leaf, where the thickness direction is the thickness direction of the door leaf in the closed state of the door body. The connecting member further includes a push rod with a ball head at one end and a first driver for driving the push rod to move linearly. A spherical surface for contacting the slope is provided on one side of the ball head close to the other end of the push rod.

[0008] The ball head is detachably connected to the connecting member or the slope is detachably connected to the connecting member.

[0009] The slope being detachably connected to the connecting member means that: an inlay block is further included, the slope is the surface of the inlay block, and the inlay block is detachably connected to the connecting member.

[0010] As those skilled in the art, when this solution is specifically applied, from the prior art that realizes the clamping of the door leaf through a slope to achieve the airtight closing of the door body based on the existing disclosure, it can be obtained that: among the slope and the push rod, the two are separately installed, one of them is installed on the door frame or the container body of the explosion container, and the other is installed on the door leaf. In this way, under the action of the first driver, when the push rod moves linearly, the spherical surface can move along the slope, and the position of the spherical surface changes in the height direction of the slope during the movement. The slope is squeezed by the spherical surface, and the squeezing amount of the spherical surface on the slope is determined according to the specific displacement of the push rod, so as to drive the door leaf to move towards the side where the door frame is located and achieve the purpose of airtight closing of the door body. Specifically, the spherical surface on the ball head is used to cooperate with the slope: during the process that the push rod makes a linear reciprocating motion perpendicular to the axis of the push rod under the action of the first driver, when the ball head moves from the bottom side of the slope to the top side of the slope, the spherical surface on the ball head squeezes the slope, so that the door leaf obtains a force approaching the door frame, and the magnitude of this force and the stroke of the door leaf are controlled by the displacement of the ball head; during the process that the ball head moves from the top side of the slope to the bottom side of the slope, the ball head removes the pushing constraint on the slope.

[0011] Considering the application of this locking piece on the explosion-proof door body of an explosion container, a technical solution is proposed in which a spherical surface is used as the contact surface on the push rod for contacting the slope surface. Specifically, different from the traditional sealed door body, since the explosion-proof door body is applied to the explosion container, in specific work, the slope surface and the spherical surface not only need to bear the pre-tightening force loaded on each of them during initial pre-tightening (during the process of the ball head pushing the slope surface), but also when an explosion occurs inside the explosion container, because shock waves, fragments, and vibrations will all load relatively large forces on each of them, and the contact force caused by the explosion increases according to the severity of the explosion, which can be much higher than the aforementioned pre-tightening force. In this way, due to the large forces on the slope surface and the spherical surface and the relatively complex forces on their respective surfaces throughout the process, depending on the materials selected to form the slope surface and the spherical surface, under factors such as material hardness and surface fatigue of the material, the slope surface and the spherical surface are very likely to appear surface depressions and local surface shedding. When surface depressions and local surface shedding occur, when the defective surface is used as the contact surface between the ball head and the slope surface, it will cause the locking piece to not meet the locking ability of the door leaf or not reach the required locking ability.

[0012] To address the above problems, this solution proposes a technical solution in which the spherical surface on the ball head is used as the extrusion surface for contacting the slope surface. Specifically, when the above-mentioned surface depressions and surface shedding occur, the shape of the ball head is convenient for guiding the ball head to continue moving towards the top side of the slope surface. Therefore, this solution can effectively avoid the situation where the movement of the push rod is locked; limited by the contact form between the ball head and the slope surface, if the slope surface uses a soft material compared to the spherical surface, the surface depression formed on the slope surface may be a smooth spherical groove to a large extent. Therefore, the surface depression form also has the characteristic of effectively avoiding the locking of the push rod movement.

[0013] To address the above problems, this solution proposes that the ball head is detachably connected to the connecting piece or the slope surface is detachably connected to the connecting piece. Specifically, when the surface depression reaches a certain degree, the local surface shedding is greater than the allowable value, and the slope surface and the cross-section are strained during threshing, the performance of the locking piece can be quickly restored by replacing the ball head or the proposed inlay block while saving the use or maintenance cost of the locking piece.

[0014] At the same time, this solution realizes the final locking of the door leaf on the container by driving the push rod to move linearly with the first driver. Therefore, this solution also has the characteristics of simple structure, low requirement for the driving ability of the corresponding driving mechanism, and convenient realization of the small-size design of the driving mechanism; the process of the above push rod realizing the pre-tightening of the door leaf does not involve operations such as rotating the door leaf. Therefore, this solution is not only applicable to the sealed connection of circular door leaves on the container, but also applicable to other door body shapes.

[0015] In summary, using the locking piece proposed in this solution can not only effectively simplify the structural design of the door body locking piece, but also improve the reliability of the seal of the explosion container and enhance the maintenance convenience.

[0016] As a person skilled in the art, since the process of closing the explosion container is the process of the door leaf moving closer to the explosion container, during the closing process, the purpose of the push rod movement is to make the ball head squeeze the slope surface to obtain the corresponding pulling force to cause the door leaf to move towards the side where the container is located. Therefore, the upper slope surface can be fixed relative to the door leaf, and at this time, the push rod can be installed on the explosion container or the door frame; the upper slope surface can also be fixed relative to the explosion container, and at this time, the push rod can be installed on the door leaf. The above connecting member can be the door leaf or the door frame itself (such as the slope surface is the surface on the door leaf or the door frame), or can be the second connecting ear with an ear structure proposed below.

[0017] As a person skilled in the art, since the door leaf is installed on the door frame in a rotating opening and closing manner, when the opening state of the door leaf is different, the direction of its thickness direction in space is different. The above limitation is that the thickness direction is the thickness direction of the door leaf in the closed state of the door body, that is, it is intended to indicate that: after the door leaf is closed, the height direction is the same as the thickness direction in the current state of the door leaf. In specific implementation, if the slope surface is set on the door leaf, the height direction of the slope surface can be along the thickness direction of the door leaf; if the slope surface is set on the door frame, the height direction of the slope surface can be along the thickness direction of the door frame.

[0018] As a further technical solution of the explosion container explosion-proof door body locking member:

[0019] The slope surface is detachably connected to the connecting member, and the material hardness of the material forming the slope surface is less than the material hardness of the material forming the spherical surface. In this solution, the selection of the above hardness is intended to make the slope surface an easily damaged surface, and later restore the locking ability of the door body locking member by replacing the slope surface. This solution proposes this preferred solution considering the connection reliability problem: as mentioned above, the slope surface carrier is an inlay block. Since the mating surface of the inlay block with the door leaf, the door frame or the second connecting ear can be surface contact, and it is easy to transmit force through the pressure on the contact surface. At the same time, when expanding the surface contact area, it will not overly affect the overall size of the door body; when the ball head is detachable, considering that the ball head is subjected to greater force during use, if clamping or other methods are used, the corresponding connection structure size is relatively large, and when using threaded connection, the connecting thread is prone to fatigue. Therefore, in this solution, the technical solution of detachable connection of the slope surface is preferably adopted. In specific implementation, the ball head and the push rod can be set as an integral structure. For the above hardness problem, considering the toughness of the main parts of the push rod and the ball head, the spherical surface can be obtained by hardening the surface of the ball head.

[0020] The connecting member includes a second connecting ear, a card slot is provided on the second connecting ear, the thickness of the inlay block is consistent with the thickness of the card slot, and the inlay block is installed in the card slot;

[0021] It also includes a locking bolt that is threadedly connected to the connecting piece, the axis is located in the thickness direction, and the end is pressed on the mosaic block. This solution proposes a technical solution that is easy to improve the existing door body assembly so that the door body locking piece can be applied to the existing door body. Specifically, if the second connecting ear is used to be fixed on the door leaf, the second connecting ear can be used as a separate part. After the processing is completed, it is fixed to the door leaf in a form such as welding. At the same time, according to the required door leaf locking capacity, it is convenient to arrange a suitable number of second connecting ears in the circumferential direction of the door leaf, and then install a matching number of push rods and first drivers for each second connecting ear. It is defined that the thickness of the mosaic block is consistent with the thickness of the card slot, in order to avoid an excessive gap between the card slot and the mosaic block, so as to achieve: under the greater impact force and vibration after the explosion, the card slot wall is in direct contact with the mosaic block, and the force of the thread related to the locking bolt is optimized, such as by reducing the deformation of the thread and the number of strain loads, etc., to ensure the reliability of the locking bolt to lock the mosaic block on the second connecting ear.

[0022] There are multiple groups of connecting members, each group of connecting members includes a second connecting ear, a push rod and a first driver, and each second connecting ear is provided with a slope. This scheme is a specific scheme of the door body locking member proposed above, which is convenient for forming multiple locking points in the circumferential direction of the door body.

[0023] As described above, when the spherical surface on the ball head cooperates with the slope surface, the door leaf needs to be closed on the door frame through the positive pressure between the spherical surface and the slope surface to achieve the purpose of sealing the explosion container. In order to maintain the corresponding sealing pressure ratio, the push rod needs to withstand continuous tension. At the same time, in order to make the push rod maintain the sealing state of the explosion container by tension, the force of the push rod is as far as possible along the axial direction thereof, so as to improve the service life and reliability of the push rod and the reliability of the cooperation between the ball head and the slope surface, it is set as follows: the push rod is a straight rod;

[0024] The mosaic block is provided with a third slide groove, and both sides of the third slide groove have slopes of equal height;

[0025] The shape of the spherical surface of the ball head satisfies that at any moment during the whole process or part of the stroke when the push rod passes through the inlay block through the third chute and slides along the length direction of the third chute, the spherical surface can be in contact with the slopes on both sides of the third chute at the same time. In this solution, by setting that the spherical surface can be in contact with the slopes on both sides of the third chute at the same time, in this way, the force on the push rod can be made to be as along its axis direction as possible, avoiding the push rod from bending under the bending moment, achieving the purpose of optimizing the force on the push rod; at the same time, setting that the spherical surface can be in contact with the slopes on both sides of the third chute at the same time can effectively prevent the ball head from slipping in the width direction of the slope under the action of vibration and shock waves, achieving the purpose of optimizing the reliability of the ball head restricting the slope. In specific implementation, it can be set that the ball head is spherical or the side of the ball head close to the push rod is a spherical surface, the center of the ball head or the center of the spherical surface is located on the axis of the push rod, the axis direction of the push rod is consistent with the height direction of the slope, and at any position in the length direction of the slope, the connection line formed by each point in the width direction of the slope is a straight line parallel to the axis of the push rod. In this way, the contact pressure between the ball heads on both sides of the third chute and the slope can be made consistent and in the same direction. More preferably, it is set that: on the slope, the area of the slope for contacting the spherical surface is an arc surface, and the radian of the arc surface is consistent with the radian of the area of the spherical surface for contacting the slope. In this way, without considering the elastic deformation of the materials forming the spherical surface and the slope, the ball head and the slope are in line contact, which can effectively reduce the magnitude of the stress on both of them during the working process of the ball head and the slope.More preferably, considering the influence of the door locking member on the increase in the total weight of the door leaf, it is advisable to set the push rod to be installed on the door frame and the slope surface to be provided on the door leaf. In this application, considering the reliability of the door locking member and the convenience of improving the existing door body, the connecting member is further provided with a first connecting ear for installation on the door frame, which is adapted to the second connecting ear serving as the carrier of the slope surface. A first sliding groove is provided on the first connecting ear for the push rod to pass through, matching the linear movement of the push rod, and capable of providing radial constraints for the push rod on both sides. The first driver is fixedly connected to the first connecting ear. A constraint member is also provided on the first connecting ear to prevent the push rod from moving along the axial direction of the push rod. Through the first sliding groove and the constraint member, the movement trajectory of the push rod can be effectively constrained, avoiding the failure of the cooperation between the ball head and the slope surface. At the same time, a second sliding groove is provided on the second connecting ear. During the closing process of the door leaf and the door frame, the ball head can be embedded in the mutually parallel second sliding groove and the third sliding groove, so that the ball head on the push rod can move to the side where the slope surface of the inlay block is located and the spherical surface is extruded on the slope surface during the linear movement of the push rod. Except for the local groove sections on the second sliding groove and the third sliding groove for the ball head to pass through, the widths of the other positions of the second sliding groove and the third sliding groove are respectively adapted to the diameters of the corresponding sections of the push rod. The above adaptation is used to achieve: through the relationship between the width of the groove section and the diameter of the corresponding section of the push rod, when the corresponding section of the push rod generates a crosstalk along its radial direction, the side surface of the groove section squeezes the side surface of the push rod to maintain the position of the corresponding section of the push rod in the width direction of the groove section, avoiding the failure of the cooperation between the ball head and the slope surface. As a person skilled in the art, to achieve the above position constraint purpose, it can be set that the diameter or thickness and width of the corresponding section of the push rod are the same as or slightly smaller than the width of the groove section to achieve this purpose. The corresponding section of the push rod is the section of the push rod located in the second sliding groove and the third sliding groove. The constraint member can be at least two clamping plates located at different positions in the length direction of the push rod, and in specific implementation, the first connecting ear is clamped by the two clamping plates to achieve the corresponding constraint purpose.

[0026] This solution also discloses an explosion-proof door body for an explosion container, including a door frame and a door leaf, and the door frame and the door leaf are hermetically connected through a locking member, and the locking member is the door locking member described in any one of the above. This solution is the specific application of the above door locking member, specifically an explosion-proof door body for an explosion container using the door locking member.

[0027] As a further technical solution of the explosion-proof door body for the explosion container:

[0028] As described above, considering the influence of the door locking member on the increase in the weight of the door leaf and making the corresponding driver be installed on the explosion container body or the door frame with less vibration as much as possible to ensure the reliability of the driver, it is set that: the slope surface is provided on the door leaf, and the push rod and the first driver are both fixed on the door frame.

[0029] The door body locking member is a door body locking member in the following form: there are multiple groups of connecting members, each group of connecting members includes a second connecting ear, a push rod and a first driver, and each second connecting ear is provided with a slope;

[0030] The connecting pieces are evenly distributed in annular shapes on the door body; the second connecting ears are evenly distributed in annular shapes on the door leaf;

[0031] In each group of connecting parts, the push rod and the first driver form an assembly, and the assembly is evenly distributed on the door frame in an annular shape. This scheme is based on the above setting of the slope on the door leaf, which is convenient for improvement on the existing door body, the door body locking member and the door leaf can be processed separately and finally assembled to form a complete functional body, and it is convenient to form a uniform sealing pressure at each position in the circumferential direction of the door body. As a person skilled in the art, in each group of connecting parts, the assembly cooperates with the second connecting ear so that each group of connecting parts can play a closing function on the door body at different circumferential positions of the door body. Preferably, after the door body is closed, the door frame and the door leaf have a specific relative position relationship at this time. In this state, each group of connecting parts is located at the same axial position of the door body, and each group of connecting parts is completely consistent. Further, in order to enable each group of connecting parts to provide a consistent preload for the door leaf at the same time, it is set that the first driver is a hydraulic drive device, such as being set to include a hydraulic cylinder and a drive rod, and the piston of the hydraulic cylinder is connected to the push rod through the drive rod. In this way, by controlling the size of the piston and the pressure of the hydraulic oil in the hydraulic cylinder, the ball heads on each group of connecting parts can produce synchronous movement to avoid uneven force on the circumferential direction of the seal between the door body and the door frame. Preferably, considering the impact of shock waves, fragments, and vibrations on the sealing performance of the seal when the explosion container is working, in order to improve the matching accuracy of the sealing surface, it is set to also include a limiter for limiting the specific matching position of the door leaf on the door frame, and the limiter can be a latch assembly.

[0032] As described above, in the process of the door body locking member closing the door body of the explosion container, the closing ability can only be achieved through the movement of the ball head under the specific matching relationship between the spherical surface and the slope surface. Based on the particularity of the explosion container compared with the traditional container, in order to make the door body provided by this solution completely unnecessary for the operator to operate on site, so as to avoid the operator being exposed to harmful or unfriendly operating environment; at the same time, as a technical solution with a simple overall drive structure, a small drive structure volume, and low requirements on the complexity of the drive structure, it is set as follows: the door body is a swing-open door body; the door frame and the door leaf are hingedly connected by a hinge shaft;

[0033] The hinge shaft serves as the rotating shaft for the door body to rotate and open and close;

[0034] It further includes a second driver for driving the door leaf to flip around the hinge axis. In the specific application of this solution, the opening and closing actions of the door body are obtained by the flipping of the door leaf around the hinge axis. During the closing process of the door leaf, when the door leaf is driven by the second driver to flip until the ball head moves to the front of the slope surface, and then the first driver is used to drive the ball head to move in a straight line towards the top side of the slope surface. During the continuous pushing of the ball head against the slope surface, the purpose of closing the explosion container is achieved; when the door leaf is opened, the first driver is used to drive the ball head to move to release the constraint on the slope surface, and then under the action of the second driver, the door leaf is driven to open in a flipping manner. Finally, a technical solution with high reliability, small volume and capable of outputting sufficient thrust is provided, and the second driver is set to adopt a hydraulic device.

[0035] The door body locking member is a door body locking member in the following form: the connecting member includes a second connecting ear, a card slot is provided on the second connecting ear, the thickness of the inlay block is the same as the thickness of the card slot, the inlay block is installed in the card slot, and it further includes a locking bolt threadedly connected to the connecting member, with its axis located in the thickness direction and the end pressing on the inlay block;

[0036] The second connecting ear is fixedly connected to the door leaf;

[0037] The slope surface is arranged on one side of the inlay block close to the outer end face of the door leaf;

[0038] The acting position of the locking bolt on the inlay block is located on one side of the inlay block close to the outer end face of the door leaf. As described above, this solution is the second connecting ear solution that can optimize the thread force proposed above. More specifically, this solution is set such that the acting position of the locking bolt on the inlay block is located on one side of the inlay block close to the outer end face of the door leaf, aiming to make: under the load of shock wave and fragments on the door leaf, in order to achieve the purpose of preventing the door leaf from loosening and disengaging, the stress surface of the inlay block is located on the back side of the inlay block, and this back side is in direct contact with the surface of the second connecting ear, so as to achieve the purpose of avoiding increasing the load on the thread to protect the thread.

[0039] In summary, the present invention has the following beneficial effects compared with the prior art:

[0040] Regarding the door locking component proposed in this solution, considering the application of this locking component on the explosion-proof door of an explosion container, a technical solution is proposed in which a spherical surface is used as the contact surface on the push rod for contacting the slope surface. Specifically, different from traditional sealed doors, since the explosion-proof door is applied to an explosion container, in specific operations, not only do the slope surface and the spherical surface need to bear the pre-tightening force applied to each of them during initial pre-tightening (during the process of the ball head pushing against the slope surface), but also when an explosion occurs inside the explosion container, because shock waves, fragments, and vibrations will all apply relatively large forces to each of them, and the contact force caused by the explosion increases according to the severity of the explosion, which can be much higher than the aforementioned pre-tightening force. In this way, due to the large forces borne by the slope surface and the spherical surface and the relatively complex forces on their respective surfaces throughout the process, depending on the materials selected to form the slope surface and the spherical surface, considering factors such as material hardness and surface fatigue of the material, it is very easy for the slope surface and the spherical surface to have surface depressions and local surface peeling. When surface depressions and local surface peeling occur, when the defective surface serves as the contact surface between the ball head and the slope surface, it will cause the locking component to not meet the door leaf locking ability or fail to reach the required locking ability.

[0041] To address the above problems, this solution proposes a technical solution in which the spherical surface on the ball head is used as the extrusion surface for contacting the slope surface. Specifically, when the above-mentioned surface depressions and surface peeling occur, the shape of the ball head is convenient for guiding the ball head to continue moving towards the top side of the slope surface. Therefore, this solution can effectively avoid the situation where the movement of the push rod is locked; limited by the contact form between the ball head and the slope surface, if the slope surface uses a softer material compared to the spherical surface, the surface depression formed on the slope surface may be a relatively smooth spherical groove. Therefore, the surface depression form also has the characteristic of effectively avoiding the locking of the push rod movement.

[0042] To address the above problems, this solution proposes that the ball head is detachably connected to the connecting piece or the slope surface is detachably connected to the connecting piece. Specifically, when the surface depression reaches a certain degree, the local surface peeling is greater than the allowable value, or the slope surface and the cross-section are strained during threshing, the performance of the locking component can be quickly restored by replacing the ball head or the proposed inlay block while saving the use or maintenance cost of the locking component.

[0043] At the same time, in this solution, the final locking of the door leaf on the container can be completed by driving the push rod to move linearly with a first driver. Therefore, this solution also has the characteristics of simple structure, low requirement for the driving ability of the corresponding driving mechanism, and is convenient for realizing the small-size design of the driving mechanism; the process of the above push rod realizing the pre-tightening of the door leaf does not involve operations such as rotating the door leaf. Therefore, this solution is not only applicable to the sealed connection of circular door leaves on the container, but also applicable to other door body shapes.

[0044] In summary, the locking member proposed by this solution can not only effectively simplify the structural design of the door locking member, but also improve the reliability of the seal of the explosion container and enhance the convenience of maintenance.

[0045] The door body proposed by this solution is a specific application of the door body locking member on the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation on the embodiments of the present invention. In the drawings:

[0047] Figure 1 It is a partial structural schematic diagram of a specific embodiment of the door body of the present invention, and this schematic diagram is the front view of the door frame part;

[0048] Figure 2 It is a partial structural schematic diagram of an assembly formed by applying a specific embodiment of the door body of the present invention on an explosion container, and this schematic diagram is the side view;

[0049] Figure 3 It is a partial structural schematic diagram of a specific embodiment of the door body of the present invention, and this schematic diagram is the front view of the door leaf part;

[0050] Figure 4 Is Figure 3 The cross-sectional view obtained by performing a cross-section along the A-A direction shown in;

[0051] Figure 5 It is a partial structural schematic diagram of a specific embodiment of the door body of the present invention, and this schematic diagram is the front view of the first connecting ear part;

[0052] Figure 6 It is a partial structural schematic diagram of a specific embodiment of the door body of the present invention, and this schematic diagram is used to reflect the cooperation relationship among the first connecting ear, the first driver, and the push rod;

[0053] Figure 7 It is a partial structural schematic diagram of a specific embodiment of the door body of the present invention, and this schematic diagram is the front view of the inlay block.

[0054] The corresponding relationship between the reference numerals and technical terms in the above schematic diagrams is as follows: 1, door frame; 2, first connecting ear; 3, seal; 31, first chute; 32, restraint; 4, container body; 5, door leaf; 6, first driver; 61, driving rod; 62, push rod; 63, ball head; 7, second connecting ear; 8, second driver; 9, second chute; 10, inlay block; 11, locking bolt; 12, slope; 13, hinge shaft; 14, third chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0055] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and shall not be construed as limiting the present invention.

[0056] Embodiment 1:

[0057] As shown in Figures 1 to 7 the figure, an explosion container explosion-proof door locking member includes a connecting member for realizing the sealed connection between the door leaf 5 and the door frame 1. A slope 12 is provided on the connecting member along the thickness direction of the door leaf 5 in the height direction. The thickness direction is the thickness direction of the door leaf 5 in the closed state of the door body. The connecting member further includes a push rod 62 with a ball head 63 at one end and a first driver 6 for driving the push rod 62 to move linearly. A spherical surface for contacting the slope 12 is provided on one side of the ball head 63 close to the other end of the push rod 62;

[0058] The ball head 63 is detachably connected to the connecting member or the slope 12 is detachably connected to the connecting member;

[0059] The slope 12 being detachably connected to the connecting member means: further including an inlay block 10, the slope 12 is the surface of the inlay block 10, and the inlay block 10 is detachably connected to the connecting member.

[0060] As a person skilled in the art, when this solution is specifically applied, from the prior art that realizes the clamping of the door leaf 5 through the slope 12 to achieve the airtight closing of the door body, it can be obtained that: among the slope 12 and the push rod 62, the two are separately installed, one of them is installed on the door frame 1 or the container body 4 of the explosion container, and the other is installed on the door leaf 5. In this way, under the action of the first driver 6, when the push rod 62 moves linearly, the spherical surface can move along the slope 12, and the position of the spherical surface changes in the height direction of the slope 12 during the movement. The slope 12 is squeezed by the slope 12, and the pushing amount of the spherical surface on the slope 12 is determined according to the specific displacement amount of the push rod 62, so as to drive the door leaf 5 to move towards the side where the door frame 1 is located and achieve the purpose of airtight closing of the door body. Specifically, the spherical surface on the ball head 63 is used to cooperate with the slope 12: during the process of the push rod 62 making a linear reciprocating movement perpendicular to the axis of the push rod 62 under the action of the first driver 6, when the ball head 63 moves from the bottom side of the slope 12 to the top side of the slope 12, the spherical surface on the ball head 63 pushes the slope 12, so that the door leaf 5 obtains a force close to the door frame 1, and the magnitude of this force and the stroke of the door leaf 5 are controlled by the displacement amount of the ball head 63; during the process of the ball head 63 moving from the top side of the slope 12 to the bottom side of the slope 12, the ball head 63 removes the pushing constraint on the slope 12.

[0061] Considering the application of this locking part on the explosion-proof door body of an explosion container, a technical solution is proposed in which a spherical surface is used as the contact surface on the push rod 62 for contacting the slope surface 12. Specifically, different from traditional sealed door bodies, since the explosion-proof door body is applied to an explosion container, in specific operations, the slope surface 12 and the spherical surface not only need to bear the pre-tightening force loaded on them during initial pre-tightening (during the process of the spherical head 63 pushing against the slope surface 12), but also when an explosion occurs inside the explosion container, because shock waves, fragments, and vibrations will all load relatively large forces on them, and the contact force caused by the explosion increases according to the severity of the explosion, which can be much higher than the aforementioned pre-tightening force. In this way, due to the large forces borne by the slope surface 12 and the spherical surface and the relatively complex forces on their respective surfaces throughout the process, depending on the materials selected to form the slope surface 12 and the spherical surface, under factors such as material hardness and surface fatigue of the material, the slope surface 12 and the spherical surface are very likely to show surface depressions and local surface peeling. When surface depressions and local surface peeling occur, when the defective surface is used as the contact surface between the spherical head 63 and the slope surface 12, it will cause the locking part to not meet or reach the required locking ability of the door leaf 5.

[0062] To address the above problems, this solution proposes a technical solution in which the spherical surface on the spherical head 63 is used as the extrusion surface for contacting the slope surface 12. Specifically, when the above-mentioned surface depressions and surface peeling occur, the shape of the spherical head 63 is convenient for guiding the spherical head 63 to continue moving towards the top side of the slope surface 12. Therefore, this solution can effectively avoid the situation where the movement of the push rod 62 is locked; limited by the contact form between the spherical head 63 and the slope surface 12, if the slope surface 12 uses a softer material compared to the spherical surface, the surface depression formed on the slope surface 12 may be a relatively smooth spherical groove. Therefore, the surface depression form also has the characteristic of effectively avoiding the locking of the movement of the push rod 62.

[0063] To address the above problems, this solution proposes that the spherical head 63 is detachably connected to the connecting part or the slope surface 12 is detachably connected to the connecting part. Specifically, when the surface depression reaches a certain degree, the local surface peeling is greater than the allowable value, and the slope surface 12 and the section are strained during threshing, the performance of the locking part can be quickly restored by replacing the spherical head 63 or the proposed inlay block 10 while saving the use or maintenance cost of the locking part.

[0064] At the same time, in this solution, the final locking of the door leaf 5 on the container can be completed by the first driver 6 driving the push rod 62 to perform a linear motion. Therefore, this solution also has the characteristics of simple structure, low requirement for the driving ability of the corresponding driving mechanism, and convenience in realizing the small-size design of the driving mechanism; the process of the above-mentioned push rod 62 realizing the pre-tightening of the door leaf 5 does not involve operations such as rotating the door leaf 5. Therefore, this solution is not only applicable to the sealed connection of circular door leaves 5 on the container, but also applicable to other door body shapes.

[0065] In summary, the locking member proposed in this solution can not only effectively simplify the structural design of the door body locking member, but also improve the reliability of sealing the explosion container and enhance the convenience of maintenance.

[0066] As a person skilled in the art, since the process of closing the explosion container is the process of the door leaf 5 moving closer to the explosion container, during the closing process, the purpose of the movement of the push rod 62 is to make the ball head 63 press against the slope surface 12 to obtain a corresponding pulling force to cause the door leaf 5 to move towards the side where the container is located. Therefore, the above slope surface 12 can be fixed relative to the door leaf 5, and at this time, the push rod 62 can be installed on the explosion container or the door frame 1; the above slope surface 12 can also be fixed relative to the explosion container, and at this time, the push rod 62 can be installed on the door leaf 5. The above connecting member can be the door leaf 5 or the door frame 1 itself (such as the slope surface 12 is the surface on the door leaf 5 or the door frame 1), or the second connecting ear 7 with an ear structure proposed below.

[0067] As a person skilled in the art, since the door leaf 5 is installed on the door frame 1 in a rotating opening and closing manner, when the opening state of the door leaf 5 is different, the direction of its thickness direction in space is different. The above is defined that the thickness direction is the thickness direction of the door leaf 5 in the closed state of the door body, that is, it is intended to indicate that: after the door leaf 5 is closed, the height direction is the same as the thickness direction of the current door leaf 5 state. In specific implementation, if the slope surface 12 is provided on the door leaf 5, the height direction of the slope surface 12 can be along the thickness direction of the door leaf 5; if the slope surface 12 is provided on the door frame 1, the height direction of the slope surface 12 can be along the thickness direction of the door frame 1.

[0068] Embodiment 2:

[0069] On the basis of Embodiment 1, this embodiment provides a more detailed technical solution:

[0070] The slope surface 12 is detachably connected to the connecting member, and the material hardness of the material forming the slope surface 12 is less than the material hardness of the material forming the spherical surface. In this solution, the selection of the above hardness is aimed at making the slope surface 12 a vulnerable surface, and later restoring the locking ability of the door body locking member by replacing the slope surface 12. Considering the connection reliability problem, this preferred solution is proposed: as mentioned above, the carrier of the slope surface 12 is the inlay block 10. Since the mating surfaces of the inlay block 10 with the door leaf 5, the door frame 1 or the second connecting ear 7 can be surface contacts, and it is easy to transmit force through the pressure on the contact surface. At the same time, when expanding the area of the surface contact area, it will not affect the overall size of the door body too much; when the ball head 63 is detachable, considering that the ball head 63 is subjected to large forces during use, if clamping or other methods are used, the corresponding connection structure size is large. When using threaded connection, the connection thread is prone to fatigue. Therefore, in this solution, the technical solution of detachably connecting the slope surface 12 is preferably adopted. In specific implementation, the ball head 63 and the push rod 62 can be set as an integral structure. For the above hardness problem, considering the toughness of the main parts of the push rod 62 and the ball head 63, the spherical surface can be obtained by hardening the surface of the ball head 63.

[0071] Embodiment 3:

[0072] On the basis of Embodiment 1, this embodiment provides a more detailed technical solution:

[0073] The connecting member includes a second connecting ear 7, a card slot is provided on the second connecting ear 7, the thickness of the inlay block 10 is the same as the thickness of the card slot, and the inlay block 10 is installed in the card slot;

[0074] It also includes a locking bolt 11 that is threadedly connected to the connecting member, has an axis in the thickness direction, and the end presses on the inlay block 10. This solution proposes a technical solution that is easy to improve the existing door body components so that this door body locking member can be applied to the existing door body. Specifically, if the second connecting ear 7 is used and fixed to the door leaf 5, the second connecting ear 7 can be used as a separate part. After processing, it is fixed to the door leaf 5 by means such as welding. At the same time, according to the required locking ability of the door leaf 5, it is convenient to arrange an appropriate number of second connecting ears 7 in the circumferential direction of the door leaf 5, and then install a matching number of push rods 62 and the first driver 6 for each second connecting ear 7. It is limited that the thickness of the inlay block 10 is the same as the thickness of the card slot, aiming to avoid too large a gap between the card slot and the inlay block 10, so as to achieve: after the explosion, under the large impact force and vibration, through the direct contact between the card slot wall and the inlay block 10, optimize the force on the thread related to the locking bolt 11, such as by reducing the deformation and strain load times of the thread, etc., to ensure the reliability of the locking bolt 11 locking the inlay block 10 on the second connecting ear 7.

[0075] Embodiment 4:

[0076] On the basis of Embodiment 1, this embodiment provides a more detailed technical solution:

[0077] There are multiple groups of the connecting members. Each group of connecting members includes a second connecting ear 7, a push rod 62, and a first driver 6. Each second connecting ear 7 is provided with a slope surface 12. This solution is a specific solution for the door locking member that is proposed above and is convenient for forming multiple locking points in the circumferential direction of the door body.

[0078] Embodiment 5:

[0079] On the basis of Embodiment 1, this embodiment provides a more detailed technical solution:

[0080] As described above, when the spherical surface of the ball head 63 cooperates with the slope surface 12, it is necessary to achieve the purpose of closing the explosion container by the positive pressure between the spherical surface and the slope surface 12 when the door leaf 5 is closed on the door frame 1. To maintain the corresponding sealing specific pressure, the push rod 62 needs to bear a continuous tensile force. At the same time, when the push rod 62 maintains the sealed state of the explosion container by being pulled, the force on the push rod 62 is preferably along its axial direction as much as possible to improve the service life, reliability of the push rod 62, and the reliability of the cooperation between the ball head 63 and the slope surface 12. It is set that: the push rod 62 is a straight rod;

[0081] The inlay block 10 is provided with a third chute 14, and both sides of the third chute 14 have slope surfaces 12 of equal height;

[0082] The shape of the upper spherical surface of the ball head 63 satisfies that at any moment during the whole process or part of the stroke when the push rod 62 passes through the inlay block 10 through the third chute 14 and slides along the length direction of the third chute 14, the spherical surface can be in contact with the slopes 12 on both sides of the third chute 14 at the same time. In this solution, by setting that the spherical surface can be in contact with the slopes 12 on both sides of the third chute 14 at the same time, in this way, the force on the push rod 62 can be made to be along its axis direction as much as possible, avoiding the bending of the push rod 62 under the bending moment, achieving the purpose of optimizing the force on the push rod 62; at the same time, by setting that the spherical surface can be in contact with the slopes 12 on both sides of the third chute 14 at the same time, it can effectively avoid the slippage of the ball head 63 in the width direction of the slope 12 under the action of vibration and shock waves, achieving the purpose of optimizing the reliability of the ball head 63 restricting the slope 12. In specific implementation, it can be set that the ball head 63 is spherical or the side of the ball head 63 close to the push rod 62 is a spherical surface, the center of the ball head 63 or the center of the spherical surface is located on the axis of the push rod 62, the axis direction of the push rod 62 is consistent with the height direction of the slope 12, and at any position in the length direction of the slope 12, the connection line formed by the points in the width direction of the slope 12 is a straight line parallel to the axis of the push rod 62. In this way, the contact pressure between the ball heads 63 on both sides of the third chute 14 and the slope 12 can be made consistent and in the same direction. More preferably, it is set that: on the slope 12, the area of the slope 12 for contacting the spherical surface is an arc surface, and the radian of the arc surface is consistent with the radian of the area of the spherical surface for contacting the slope 12. In this way, without considering the elastic deformation of the materials forming the spherical surface and the slope 12, the ball head 63 and the slope 12 are in line contact, which can effectively reduce the stress on both of them during the working process of the ball head 63 and the slope 12.More preferably, considering the influence of the door locking member on the total weight increase of the door leaf 5, it is advisable to set the push rod 62 to be installed on the door frame 1 and the slope surface 12 to be arranged on the door leaf 5. In this application, considering the reliability of the door locking member and the convenience of improving the existing door body, the connecting member is also provided with a first connecting ear 2 for installing on the door frame 1. A first sliding groove 31 is provided on the first connecting ear 2 for the push rod 62 to pass through, matching the linear movement of the push rod 62, and capable of providing radial constraints for the push rod 62 on both sides. The first driver 6 is fixedly connected to the first connecting ear 2. A constraint member 32 for preventing the push rod 62 from moving along the axial direction of the push rod 62 is also provided on the first connecting ear 2. Through the first sliding groove 31 and the constraint member 32, the movement track of the push rod 62 can be effectively constrained to avoid the cooperation failure between the ball head 63 and the slope surface 12. At the same time, a second sliding groove 9 is provided on the second connecting ear 7. During the closing process of the door leaf 5 and the door frame 1, the ball head 63 can be embedded in the mutually parallel second sliding groove 9 and the third sliding groove 14, so that the ball head 63 on the push rod 62 can move to the side where the slope surface 12 of the inlay block 10 is located and the spherical surface is pressed against the slope surface 12 during the linear movement of the push rod 62. Except for the partial groove sections on the second sliding groove 9 and the third sliding groove 14 for the ball head 63 to pass through, the groove section widths at other positions on the second sliding groove 9 and the third sliding groove 14 are respectively adapted to the diameters of the corresponding sections of the push rod 62. The above adaptation is used to achieve: through the relationship between the groove section width at this groove section position and the diameter of the corresponding section of the push rod 62, when the corresponding section of the push rod 62 generates a crosstalk along its radial direction, the side surface of the groove section squeezes the side surface of the push rod 62 to maintain the position of the corresponding section of the push rod 62 in the groove section width direction to avoid the cooperation failure between the ball head 63 and the slope surface 12. As a person skilled in the art, to achieve the above position constraint purpose, it can be set that the diameter or thickness and width of the corresponding section of the push rod 62 are the same as or slightly smaller than the groove section width to achieve this purpose. The corresponding section of the push rod 62 is the section of the push rod 62 located in the second sliding groove 9 and the third sliding groove 14. The constraint member 32 can be at least two clamping plates located at different positions in the length direction of the push rod 62. And in specific implementation, the first connecting ear 2 is clamped by the two clamping plates to achieve the corresponding constraint purpose.

[0083] Embodiment 6:

[0084] On the basis of Embodiment 1, this embodiment provides an explosion-proof door body for an explosion container, including a door frame 1 and a door leaf 5. The door frame 1 and the door leaf 5 are hermetically connected through a locking member, and the locking member is the door locking member described in Embodiment 1. This solution is the specific application of the above door locking member, specifically an explosion-proof door body for an explosion container using the door locking member.

[0085] Embodiment 7:

[0086] Based on Embodiment 6, this embodiment provides a more detailed technical solution:

[0087] As described above, considering the influence of the door locking member on the increased weight of the door leaf 5 and enabling the corresponding driver to be installed on the explosion container body 4 or the door frame 1 with less vibration as much as possible to ensure the reliability of the driver, it is set that: the slope 12 is arranged on the door leaf 5, and the push rod 62 and the first driver 6 are both fixed on the door frame 1.

[0088] Embodiment 8:

[0089] Based on Embodiment 6 and Embodiment 4, this embodiment provides a more detailed technical solution:

[0090] The door locking member is a door locking member in the following form: there are multiple groups of the connecting members, and each group of connecting members includes a second connecting ear 7, a push rod 62 and a first driver 6, and each second connecting ear 7 is provided with a slope 12;

[0091] The connecting members are evenly distributed in a ring on the door body: the second connecting ears 7 are evenly distributed in a ring on the door leaf 5;

[0092] In each group of connecting members, the push rod 62 and the first driver 6 form an assembly, and the assemblies are evenly distributed in a ring on the door frame 1. This solution is based on the above technical solution of arranging the slope 12 on the door leaf 5, which is convenient for improving on the existing door body, the door locking member and the door leaf 5 can be processed separately and finally form a complete functional body through assembly, and it is convenient to form a uniform sealing pressure at each position in the circumferential direction of the door body. As those skilled in the art, in each group of connecting members, the assembly cooperates with the second connecting ear 7 so that each group of connecting members exerts a closing function on the door body at different circumferential positions of the door body. Preferably, after the door body is closed, at this time, there is a specific relative position relationship between the door frame 1 and the door leaf 5. In this state, each group of connecting members is located at the same axial position of the door body, and each group of connecting members is exactly the same. Further, in order to enable each group of connecting members to provide a consistent pre-tightening force for the door leaf 5 at the same time, it is set that the first driver 6 is a hydraulic driving device, such as including a hydraulic cylinder and a driving rod 61, and the piston of the hydraulic cylinder is connected to the push rod 62 through the driving rod 61. In this way, by controlling the size of the piston and the pressure of the hydraulic oil in the hydraulic cylinder, the ball heads 63 on each group of connecting members can be made to move synchronously to avoid uneven force in the circumferential direction on the seal 3 between the door body and the door frame 1. Preferably, considering the influence of shock waves, fragments and vibrations on the sealing performance of the seal 3 during the operation of the explosion container, in order to improve the matching accuracy of the sealing surface, it is set that a limiting member for defining the specific matching position of the door leaf 5 on the door frame 1 is further included, and the limiting member can adopt a plug pin assembly.

[0093] Embodiment 9:

[0094] On the basis of Embodiment 6, this embodiment provides a more detailed technical solution:

[0095] As described above, during the process of the door locking member closing the explosion container door, the closing ability can only be achieved through the movement of the spherical head 63 under the specific mating relationship between the spherical surface and the slope surface 12. Due to the particularity of the explosion container different from the traditional container, in order to make the door provided by this solution completely not require on-site operation by the operator to avoid the operator being exposed to a harmful or unfriendly operating environment; at the same time, as a technical solution with a simple overall driving structure, a small volume of the driving structure, and a low requirement for the complexity of the driving structure, it is set as: the door is a swing-open type door; the door frame 1 and the door leaf 5 are hingedly connected through a hinge shaft 13;

[0096] The hinge shaft 13 serves as the rotation axis for opening and closing the door.

[0097] It further includes a second driver 8 for driving the door leaf 5 to flip around the hinge shaft 13. When this solution is specifically applied, the opening and closing actions of the door are obtained by the door leaf 5 flipping around the hinge shaft 13. During the closing process of the door leaf 5, when the door leaf 5 is driven by the second driver 8 to flip until the spherical head 63 moves to the front of the slope surface 12, and then the spherical head 63 is driven by the first driver 6 to make a linear motion towards the top side of the slope surface 12. During the continuous pushing of the slope surface 12 by the spherical head 63, the purpose of closing the explosion container is achieved; when the door leaf 5 is opened, the spherical head 63 is driven by the first driver 6 to move to release the constraint on the slope surface 12, and then under the action of the second driver 8, the door leaf 5 is driven to open in a flipping manner. Finally, as a technical solution with high reliability, small volume and capable of outputting sufficient thrust, it is set that the second driver 8 adopts a hydraulic device.

[0098] Embodiment 10:

[0099] On the basis of Embodiment 6 and Embodiment 3, this embodiment provides a more detailed technical solution:

[0100] The door locking member is a door locking member in the following form: the connecting member includes a second connecting ear 7, a card slot is provided on the second connecting ear 7, the thickness of the inlay block 10 is the same as the thickness of the card slot, the inlay block 10 is installed in the card slot, and it further includes a locking bolt 11 threadedly connected to the connecting member, with its axis located in the thickness direction and its end pressing on the inlay block 10;

[0101] The second connecting ear 7 is fixedly connected to the door leaf 5;

[0102] The slope surface 12 is arranged on one side of the inlay block 10 close to the outer end face of the door leaf 5;

[0103] The acting position of the locking bolt 11 on the inlay block 10 is located on the side of the inlay block 10 close to the outer end face of the door leaf 5. As described above, this solution is the second connecting ear 7 solution for optimizing the thread force proposed above. More specifically, this solution is set such that the acting position of the locking bolt 11 on the inlay block 10 is located on the side of the inlay block 10 close to the outer end face of the door leaf 5, aiming to: under the load of shock waves and fragments on the door leaf 5, in order to achieve the purpose of preventing the door leaf 5 from loosening and disengaging, the force-bearing surface of the inlay block 10 is located on the back side of the inlay block 10, and this back side is in direct contact with the surface of the second connecting ear 7, so as to achieve the purpose of avoiding increasing the load on the thread to protect the thread.

[0104] In the above embodiments, the shown slope surface 12 is also commonly referred to as an inclined surface in the prior art.

[0105] The specific implementation manners described above have further elaborated on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only the specific implementation manners of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An explosion-proof door locking member for an explosion container, comprising a connecting member for realizing the sealed connection between a door leaf (5) and a door frame (1), wherein a slope surface (12) with a height direction along the thickness direction of the door leaf (5) is arranged on the connecting member, and the thickness direction is the thickness direction of the door leaf (5) in the door closed state, and is characterized in that, The connecting member further includes a push rod (62) with a ball head (63) provided at one end, and a first driver (6) for driving the push rod (62) to move linearly. A spherical surface for contacting the slope surface (12) is provided on one side of the ball head (63) close to the push rod (62). The ball head (63) is detachably connected to the connecting member or the slope surface (12) is detachably connected to the connecting member. The slope surface (12) being detachably connected to the connecting member means that: an inlay block (10) is further included, the slope surface (12) is the surface of the inlay block (10), and the inlay block (10) is detachably connected to the connecting member. The connecting member includes a second connecting ear (7). A clamping groove is provided on the second connecting ear (7). The thickness of the inlay block (10) is the same as the thickness of the clamping groove, and the inlay block (10) is installed in the clamping groove. It further includes a locking bolt (11) threadedly connected to the connecting member, with its axis located in the thickness direction and its end pressing on the inlay block (10). The push rod (62) is a straight rod. A third sliding groove (14) is provided on the inlay block (10), and slope surfaces (12) of equal height are provided on both sides of the third sliding groove (14). The shape of the spherical surface on the ball head (63) satisfies that: at any moment during the whole process or part of the stroke when the push rod (62) passes through the inlay block (10) through the third sliding groove (14) and slides along the length direction of the third sliding groove (14), the spherical surface can be in contact with the slope surfaces (12) on both sides of the third sliding groove (14) simultaneously.

2. The explosion-proof door locking member of an explosion container according to claim 1, characterized in that, The material hardness of the material forming the slope surface is less than the material hardness of the material forming the spherical surface.

3. The explosion-proof door locking member of an explosion container according to claim 1, characterized in that There are multiple groups of the connecting members. Each group of connecting members includes a second connecting ear (7), a push rod (62), and a first driver (6). A slope surface (12) is provided on each second connecting ear (7).

4. An explosion-proof door body for an explosion container, comprising a door frame (1) and a door leaf (5), wherein the door frame (1) and the door leaf (5) are hermetically connected through a locking member, and is characterized in that, The locking member is the door body locking member described in any one of claims 1 to 3.

5. The explosion-proof door body of an explosion container according to claim 4, characterized in that, The slope surface (12) is provided on the door leaf (5), and the push rod (62) and the first driver (6) are both fixed on the door frame (1).

6. The explosion-proof door body of an explosion container according to claim 5, characterized in that, The door body locking member is the door body locking member described in claim 3, and the connecting members are annularly and uniformly distributed on the door body: the second connecting ears (7) are annularly and uniformly distributed on the door leaf (5). In each group of connecting members, the push rod (62) and the first driver (6) form an assembly body, and the assembly body is annularly and uniformly distributed on the door frame (1).

7. An explosion-proof door body of an explosion container according to claim 4, characterized in that, The door body is a swing-open type door body; the door frame (1) and the door leaf (5) are hingedly connected through a hinge shaft (13). The hinge shaft (13) serves as the rotation axis for opening and closing the door body. It further includes a second driver (8) for driving the door leaf (5) to flip around the hinge shaft (13).

8. The explosion-proof door body of an explosion container according to claim 4, characterized in that, The second connecting ear (7) is fixedly connected to the door leaf (5). The slope surface (12) is provided on one side of the inlay block (10) close to the outer end face of the door leaf (5). The acting position of the locking bolt (11) on the inlay block (10) is on one side of the inlay block (10) close to the outer end face of the door leaf (5).

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