A door end structure of a low temperature tank container

Abstract

The application discloses a door end structure of a low-temperature tank container, which comprises a stand I, a stand II, a workbench cross beam, a valve box assembly and a workbench assembly; the stand I is parallel to and close to a left corner column; the stand II is parallel to and spaced from a right corner column; the workbench cross beam connects the stand I and the stand II; the valve box assembly comprises a left door plate, a right door plate, a hinge I, a door sill and a vertical door lock assembly; the left door plate and the right door plate are respectively hinged to the stand I and the stand II through the hinge I; the door sill is close to a lower end beam; the vertical door lock assembly can lock the left door plate and the right door plate; the workbench assembly comprises a workbench door plate, a hinge II and a horizontal lock assembly; the workbench door plate can close an upper end area and can be turned down to be opened as a workbench; the lower side of the workbench door plate is hinged to the workbench cross beam through the hinge II; and the horizontal lock assembly can lock the workbench door plate. The door end structure of the application has a turned-down workbench and good sealing performance, is compact and reasonable in layout, meets the actual use requirement of the tank container and is convenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to a door end structure of a low-temperature tank container. BACKGROUND

[0002] The tank container comprises a box body and a frame, and is suitable for road-rail-water combined transportation. Generally, the tank container for transporting liquefied gas or frozen liquefied gas arranges the loading and unloading pipelines, safety accessories, loading and unloading accessories, instruments and the like at one end of the head, and the door end composed of the valve box, the frame end frame to prevent the valves and instruments connected to the tank body from being impacted during transportation, and to play a protective and anti-theft role.

[0003] The door end structure provided with the valve box at one end of the tank container has the following limitations: 1. When the operator needs to check the instruments or perform filling and unloading, the container door lock is opened, and the tank door is opened. When the operation site of the tank container is limited, the operator cannot operate the valves of the tank container on the second layer or above through the tank container end ladder, and must use the ground ladder or other climbing tools to perform the loading and unloading operations of the valves of the tank container on the second layer or above. Therefore, a door end structure is needed to have a working platform to allow the operator to operate the valves of the upper tank container without the aid of external tools, while ensuring the safety and stability of the operator during operation. 2. The tank container for transporting liquefied gas is usually used in various chemical plants, and the site is dusty. A sealing device capable of blocking dust needs to be provided. Due to the requirements of the tank container on the self-weight and internal space, the thickness of the end face of the door plate of the door end of the tank container is usually 20 mm or less. The JC type or J type sealing strip matching the container door is suitable for door plate end faces with a thickness of 25 mm or more. The cost of customizing the JC type sealing strip with a relatively narrow thickness is relatively high. On the other hand, the sealing rubber strip of the tank container needs to be installed firmly and reliably, and should also be easy to disassemble and replace. The JC type sealing strip on the market needs to be installed in a whole circle, and is not convenient to disassemble, maintain and replace. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a door end structure of a low-temperature tank container, which has a downward working platform and good sealing performance to overcome the defects of the existing door end, such as the inability to operate the valves at a high position when the operation site is limited, and the lack of a sealing device that is easy to disassemble and assemble.

[0005] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0006] A door end structure of a low-temperature tank container, the low-temperature tank container comprising a tank body, a frame and pipelines, the tank body being arranged in the frame, the pipelines being led out from the tank body to outside of an end head of the tank body; the frame comprising two end frames and upper and lower side beams connecting the two end frames; the end frame being enclosed by an upper end beam, a right corner column, a lower end beam and a left corner column in sequence; the door end structure being arranged at the end frame close to the pipelines; the door end structure comprising a vertical column I, a vertical column II, a workbench cross beam, a valve box assembly and a workbench assembly;

[0007] The vertical column I is parallel to the left corner column and is fixed at the upper end beam and the lower end beam at both ends; the vertical column II is parallel to the right corner column and is fixed at the upper end beam and the lower end beam at both ends; the workbench cross beam connects the vertical column I and the vertical column II;

[0008] The valve box assembly is arranged in a lower end region enclosed by the vertical column I, the vertical column II, the workbench cross beam and the lower end beam; the valve box assembly comprising a left door plate, a right door plate, a hinge I, a door sill and a vertical door lock assembly; the left door plate and the right door plate can close the lower end region, the left side of the left door plate is hinged to the vertical column I through the hinge I, the right side of the right door plate is hinged to the vertical column II through the hinge I; the door sill is parallel to the lower end beam; the vertical door lock assembly can lock the left door plate and the right door plate;

[0009] The workbench assembly is arranged in an upper end region enclosed by the vertical column I, the vertical column II, the workbench cross beam and the upper end beam; the workbench assembly comprising a workbench door plate, a hinge II and a horizontal lock assembly; the workbench door plate can not only close the upper end region but also be flipped down to be used as a workbench, the lower side of the workbench door plate is hinged to the workbench cross beam through the hinge II; the horizontal lock assembly can lock the workbench door plate.

[0010] The application also comprises the following technical features:

[0011] Specifically, the vertical door lock assembly comprises a vertical lock rod, an upper lock seat, a lower lock seat and a door lock handle; the vertical lock rod is arranged close to the right door plate along the vertical direction, the upper lock seat is matched with the upper end of the vertical lock rod and arranged on the workbench cross beam, the lower lock seat is matched with the lower end of the vertical lock rod and arranged on the door sill, and the door lock handle is connected with the middle part of the vertical lock rod and matched with a clamping seat on the right door plate.

[0012] Specifically, a sealing strip is arranged between the workbench cross beam and the upper edge of the left door plate, between the workbench cross beam and the upper edge of the right door plate, between the vertical column I and the left side edge of the left door plate and between the vertical column II and the right side edge of the right door plate; the sealing strip is fixed on the workbench cross beam, the vertical column I and the vertical column II respectively; when the left door plate and the right door plate are closed, the sealing strip can seal the upper eaves, the left side gap and the right side gap of the valve box assembly.

[0013] Specifically, when the left door plate and the right door plate are closed, the left side edge of the right door plate is pressed against the right side edge fold of the left door plate, and U-shaped sealing strips are arranged at the right side edge fold of the left door plate, the lower edge of the left door plate and the lower edge of the right door plate.

[0014] Specifically, the transverse lock assembly comprises a transverse lock rod, a left lock seat, a right lock seat and a handle; the transverse lock rod is arranged along the transverse direction and close to the upper end of the workbench door plate; the left lock seat is matched with the left end of the transverse lock rod and arranged on the stand I; the right lock seat is matched with the right end of the transverse lock rod and arranged on the stand II; the handle is connected with the transverse lock rod and matched with the clamping seat on the workbench door plate; and the handle is arranged close to the stand II.

[0015] Specifically, the inner walls of the left door plate and the right door plate are provided with cross-shaped reinforcing members; and vertically flipable locking members are arranged at the upper parts of the cross-shaped reinforcing members in the left door plate and the right door plate respectively; when the workbench door plate is opened by being flipped downward, the two locking members are respectively flipped and clamped at the upper ends of the left door plate and the right door plate; the two ends of the transverse lock rod of the workbench door plate can be locked in the two locking members; the upper ends of the two locking members abut against the lower end surface of the workbench door plate; and the lower ends of the two locking members abut against the top parts of the left door plate and the right door plate.

[0016] Specifically, the locking member comprises a rotating plate, a supporting plate, a connecting plate, a rotating shaft I, a fixing seat I, a rotating plate, a lock seat, a rotating shaft II, a fixing seat II, a bolt assembly and a bolt fixing seat.

[0017] The rotating plate comprises two parallel rotating plates, and the connecting plate connects the two rotating plates; the upper ends of the two rotating plates are rotatably connected with the fixing seat I through the rotating shaft I; the middle parts of the rotating plates are stepped; the supporting plate connects the two rotating plates, and the upper surface of the supporting plate is flush with the upper edges of the stepped protrusions of the two rotating plates to form a stepped supporting surface.

[0018] The lock seat is fixed on the rotating plate; the right end of the rotating plate is fixedly connected with the rotating shaft II; the rotating shaft II is rotatably arranged on the fixing seat II; the fixing seat II is fixed to the outer side wall of the lower part of the right rotating plate; the left end of the rotating plate is arranged with the bolt assembly; and the bolt assembly can sequentially penetrate the left end of the rotating plate, the left rotating plate and the bolt fixing seat.

[0019] Specifically, a plurality of transverse ladder columns are arranged between the stand II and the right corner column from top to bottom to form a climbing ladder.

[0020] Specifically, the hinges I are arranged in multiple numbers and vertically spaced; and the hinges II are arranged in multiple numbers and horizontally spaced.

[0021] Specifically, the distance between the workbench cross beam and the upper end beam is at least 500 mm.

[0022] Compared with the prior art, the present application has the following technical effects:

[0023] In the application, the workbench, valve box door and ladder are arranged integrally at the door end of the tank box, the layout is compact and reasonable, and meets the needs of the operator in the actual operation and use of the tank box, the operator only needs to climb the ladder to open the lock rod of the workbench, then turn down the workbench, and stand on the workbench to operate the door end of the second layer tank box, so that the operator can maintain and use more conveniently.

[0024] In the application, according to the environmental characteristics of the tank box use scene and the structural characteristics of the tank box valve box, two types of different forms of sealing elements are arranged on the valve box door to realize the functions of shielding dust and shock absorption. The sealing assembly has simple structure, low cost and convenient fixing mode, so that the operator can replace the aging and damaged sealing element in time during long-term use.

[0025] The door end structure of the application meets the requirements of protecting the loading and unloading valve in the tank box, the operator climbing and maintaining, and operating the door end of the second layer stacked tank box.

[0026] In the application, a lock element is arranged between the workbench and the valve box door, the lock element can support the turned-down workbench, and connect the workbench and the valve box door plate, so that the downward load borne by the workbench during use is transmitted to the valve box door plate and the reinforcing rib through the device, the stress condition of the original cantilever structure of the workbench is improved, the stability of the workbench is increased, and the safety and reliability of the operator during use are improved.

[0027] The left and right lock seats can lock the lock rod of the workbench to fix the position of the valve box door end and the workbench, so that the workbench does not swing or shake when used, and the reliability and safety of the workbench are increased.

[0028] The lock seat has activity and adjustability through the cooperation of the latch assembly, rotating shaft and rotating plate. When used, the lock seat and rotating plate can be opened first, then the lock rod is lowered, and then the lock seat and rotating plate are closed. The lock rod is adjusted by the lock rod handle to make the lock rod completely enter the lock seat. Compared with similar closed structures, the applicability of the device is wider.

[0029] The latch assembly has a whole reset mechanism through the compression spring, and is in a locked state under no force or initial state. When used, the latch assembly can be inserted into the rotating plate to fix the position of the lock seat and rotating plate. When not artificially opened, the position of the lock seat cannot be moved. At the same time, in the locked state, the latch is fixed inside the door plate through the latch fixing seat, so that the shaking during transportation is reduced.

[0030] The latch has small size and can be fixed on the upper half of the door plate inside the valve box, so that the space inside the valve box is not occupied, and the operator can use it conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a front view of the container door end structure;

[0032] Figure 2 is a schematic view of the lock mounting position;

[0033] Figure 3 is a schematic view of the lock in operation;

[0034] Figure 4 is a Figure 1 schematic view of the A-A section and the seal mounting;

[0035] Figure 5 is a schematic view of the U-shaped seal mounting;

[0036] Figure 6 is a perspective view of the lock;

[0037] Figure 7 is a front view of the lock;

[0038] Figure 8 is a Figure 7 schematic view of the A-A section with the lock base removed;

[0039] Figure 9 is a Figure 7 schematic view of the B-B section;

[0040] Figure 10 is a schematic view of the lock in the state of use of the support workbench in the inverted position;

[0041] Figure 11 is a schematic view of the lock in the state of use of the support workbench in the inverted position, in a partial enlarged view.

[0042] The meaning of the various reference numbers in the figures is as follows:

[0043] 1. upper end beam, 2. right corner post, 3. lower end beam, 4. left corner post, 5. upright I, 6. upright II, 7. workbench cross beam, 8. left door panel, 9. right door panel, 10. hinge I, 11. door sill, 12. vertical door lock assembly, 13. workbench door panel, 14. hinge II, 15. horizontal lock assembly, 16. seal, 17. U-shaped seal, 18. cross-shaped reinforcement, 19. lock, 20. ladder post, 121. vertical lock rod, 122. upper lock base, 123. lower lock base, 124. door lock handle, 151. horizontal lock rod, 152. left lock base, 153. right lock base, 154. handle; 101. turning plate, 102. support plate, 103. connecting plate, 104. turning shaft I, 105. fixed base I, 106. rotating plate, 107. lock base, 108. turning shaft II, 109. fixed base II, 110. latch assembly, 111. latch fixed base, 112. latch handle, 113. latch rod, 114. spring, 115. latch sleeve, 116. fixed plate. Detailed Implementation

[0044] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0045] Example 1:

[0046] like Figures 1 to 11 As shown, this embodiment provides a door-end structure for a cryogenic tank container. The cryogenic tank container includes a tank body, a frame, and pipelines. The tank body is located within the frame, and the pipelines extend from the tank body and connect to valves, external pipelines, or instruments outside one end cap of the tank body. The frame includes two end frames and an upper side beam and a lower side beam connecting the two end frames. The end frames are sequentially formed by an upper end beam 1, a right corner post 2, a lower end beam 3, and a left corner post 4. The door-end structure is located at the end frame near the pipeline side. The door-end structure includes a column I5, a column II6, a workbench crossbeam 7, a valve box assembly, and a workbench assembly.

[0047] Column I5 is parallel to and closely attached to the left corner column 4, and its two ends are fixed to the upper beam 1 and the lower beam 3; Column II6 is arranged parallel to and spaced apart from the right corner column 2, and its two ends are fixed to the upper beam 1 and the lower beam 3; the workbench crossbeam 7 connects column I5 and column II6.

[0048] The valve box assembly is located in the lower area enclosed by column I5, column II6, workbench beam 7, and lower beam 3; the valve box assembly includes a left door panel 8, a right door panel 9, hinge I10, threshold 11, and vertical door lock assembly 12; the left door panel 8 and right door panel 9 can close the lower area, the left door panel 8 is hinged to column I5 on the left side via hinge I10, and the right door panel 9 is hinged to column II6 on the right side via hinge I10; the threshold 11 is parallel to and close to the lower beam 3; the vertical door lock assembly 12 can lock the left door panel 8 and right door panel 9.

[0049] The workbench assembly is located in the upper area enclosed by column I5, column II6, workbench crossbeam 7 and upper beam 1; the workbench assembly includes workbench door panel 13, hinge II14, and horizontal locking assembly 15; the workbench door panel 13 can close the upper area and can also be flipped down to open as a workbench, the lower side of the workbench door panel 13 is hinged to the workbench crossbeam 7 through hinge II14, and the horizontal locking assembly 15 can lock the workbench door panel 13.

[0050] The vertical door lock assembly 12 comprises a vertical lock rod 121, an upper lock seat 122, a lower lock seat 123 and a door lock handle 124; the vertical lock rod 121 is arranged along the vertical direction close to the right door panel 9, the upper lock seat 122 is matched with the upper end of the vertical lock rod 121 and arranged on the workbench crossbeam 7, the lower lock seat 123 is matched with the lower end of the vertical lock rod 121 and arranged on the door sill 11, and the door lock handle 124 is connected with the middle part of the vertical lock rod 121 and matched with the clamping seat on the right door panel 9.

[0051] A sealing strip 16 is arranged between the workbench crossbeam 7 and the upper edge of the left door panel 8, between the workbench crossbeam 7 and the upper edge of the right door panel 9, between the column I 5 and the left side edge of the left door panel 8, and between the column II 6 and the right side edge of the right door panel 9, and the sealing strip 16 is fixed on the workbench crossbeam 7, the column I 5 and the column II 6 respectively; when the left door panel 8 and the right door panel 9 are closed, the sealing strip 16 can seal the upper eaves, the left side gap and the right side gap of the valve box assembly; preferably, the sealing member is fixed by riveting with a pressing strip; specifically, the sealing strip is a P-shaped rubber strip, the P-shaped rubber strip is arranged with the P-shaped ring end facing the closing direction of the left door panel and the right door panel, and plays a role in blocking external sand and dust, and the P-shaped rubber strip is fixed by riveting with a metal pressing strip at the flat rubber strip at the rear of the P-shaped ring. In other embodiments, the P-shaped rubber strip can be replaced by other forms of sealing strips such as O-shaped sealing strips, which can achieve the sealing effect.

[0052] When the left door panel 8 and the right door panel 9 are closed, the left side edge of the right door panel 9 is pressed on the right side edge folded edge of the left door panel 8, and a U-shaped sealing strip 17 is arranged at the right side edge folded edge of the left door panel 8, the lower edge of the left door panel 8 and the lower edge of the right door panel 9; preferably, the sealing member is fixed by gluing and clamping; specifically, the U-shaped sealing strip is a long-short U-shaped sealing strip, and the sealing strip at the longitudinal door eaves of the closed left door panel and right door panel and the lower door edge folded edge of the two door panels is preferably a long-short U-shaped sealing strip, wherein the long-short U-shaped sealing strip is installed at the inside folded edge of the left and right door panels, the long edge is installed on the side of the door panel in contact with the door sill, and the long-short U-shaped sealing strip is installed longitudinally at the long door eaves of the right door panel, the long edge is installed on the place where the two door edges contact when the left door panel and the right door panel are closed, and plays a role in reducing the rigid touch shock when the door is closed; the long-short U-shaped sealing strip is fixed by gluing. In other embodiments, the U-shaped sealing strip can be replaced by other forms of sealing strips such as hook-shaped sealing strips, which can achieve the sealing and shock absorption effect.

[0053] The transverse lock assembly 15 comprises a transverse lock rod 151, a left lock seat 152, a right lock seat 153 and a handle 154; the transverse lock rod 151 is arranged along the transverse direction and close to the upper end of the workbench door plate 13, the left lock seat 152 is matched with the left end of the transverse lock rod 151 and arranged on the stand column I 5, the right lock seat 153 is matched with the right end of the transverse lock rod 151 and arranged on the stand column II 6, the handle 154 is connected with the transverse lock rod 151 and matched with the clamping seat on the workbench door plate 13; the handle 154 is arranged close to the stand column II 6.

[0054] The inner walls of the left door plate 8 and the right door plate 9 are respectively provided with cross-shaped reinforcing members 18; the upper portions of the cross-shaped reinforcing members 18 in the left door plate 8 and the right door plate 9 are respectively provided with vertically flipable lock members 19; when the workbench door plate 13 is flipped downward to open, the two lock members 19 are respectively flipped and clamped on the upper ends of the left door plate 8 and the right door plate 9, the two ends of the transverse lock rod 151 of the workbench door plate 13 can be locked in the two lock members 19, the upper ends of the two lock members 19 abut against the lower end surface of the workbench door plate 13, and the lower ends of the two lock members 19 abut against the top portions of the left door plate 8 and the right door plate 9, thereby playing a role of bearing part of the load of the workbench.

[0055] The lock member 19 comprises a rotating plate 101, a supporting plate 102, a connecting plate 103, a rotating shaft I 104, a fixing seat I 105, a rotating plate 106, a lock seat 107, a rotating shaft II 108, a fixing seat II 109 and a bolt assembly 110.

[0056] The rotating plate 101 comprises two parallel and opposite rotating plates 101, and the connecting plate 103 connects the two rotating plates 101; the upper ends of the two rotating plates 101 are rotatably connected with the fixing seat I 105 through the rotating shaft I 104; the middle portions of the rotating plates 101 are step-shaped, the supporting plate 102 connects the two rotating plates 101, and the upper surface of the supporting plate 102 is flush with the upper edges of the step-shaped protrusions of the two rotating plates 101 to form a step-shaped supporting surface.

[0057] The lock seat 107 is fixed on the rotating plate 106, the right end of the rotating plate 106 is fixedly connected with the rotating shaft II 108, the rotating shaft II 108 is rotatably arranged on the fixing seat II 109, the fixing seat II 109 is fixed on the outer side wall of the lower portion of the right rotating plate 101, the left end of the rotating plate 106 is provided with the bolt assembly 110, and the bolt assembly 110 can sequentially penetrate the left end of the rotating plate 106, the left rotating plate 101 and the bolt fixing seat 111.

[0058] The tank door end comprises a valve tank and a workbench above the valve tank, the two door plates of the valve tank can be opened and closed, and the workbench can be flipped downward from the vertically closed state to the horizontal state; the two lock members are respectively arranged on the inner walls of the two door plates, and when the two door plates are opened, the lock members can be flipped upward to be clamped on the upper edges of the door plates to support the opened workbench and be matched with the transverse lock rod on the workbench.

[0059] The fixed seat I105 is fixed on the inner wall of the door panel, and the step supporting surface can be clamped on the upper edge of the door panel after the rotating plate 101 is flipped upward around the rotating shaft I104; the bolt fixed seat 111 is fixed on the inner wall of the door panel and close to the inner side wall of the lower part of the left rotating plate 101.

[0060] The rotating plate 106 is an L-shaped plate, the horizontal plate end of the rotating plate 106 is connected with the rotating shaft II108, and the vertical plate of the rotating plate 106 is installed with the bolt assembly 110; the rotating plate 106 can be rotated to make the horizontal plate of the rotating plate 106 be placed on the lower end surface of the two rotating plates 101, and the vertical plate of the rotating plate 106 is close to the outer side wall of the lower part of the left rotating plate 101.

[0061] The bolt assembly 110 includes a bolt handle 112, a bolt rod 113, a spring 114, a bolt sleeve 115 and a fixed plate 116.

[0062] The bolt handle 112 is fixed on the left end of the bolt rod 113, the left half of the bolt rod 113 has a smaller diameter than the right half to form a limiting ring table in the middle of the bolt rod 113, the spring 114 is sleeved on the left part of the bolt rod 113, the bolt sleeve 115 is sleeved on the outside of the spring 114, the left end of the bolt sleeve 115 is provided with a circular hole in the cross section, and the right end of the bolt sleeve 115 is fixedly connected with the vertical plate of the rotating plate 106 through the fixed plate 116; the two ends of the spring 114 are limited between the limiting ring table and the inner wall of the left end of the bolt sleeve 115, and axial pulling of the bolt handle 112 and the connected bolt rod 113 can compress the spring 114; in the reset state of the spring 114, the right end of the bolt rod 113 can pass through the rotating plate 106, the left rotating plate 101 and the bolt fixed seat 111 in sequence; in the compressed state of the spring 114, the bolt rod 113 can be separated from the bolt fixed seat 111 and the left rotating plate 101.

[0063] The inner wall of the door panel is provided with a cross-shaped reinforcing rib, and the two fixed seats I105 corresponding to the two rotating plates 101 are respectively located on the two sides of the upper part of the cross-shaped reinforcing rib.

[0064] When the workbench is flipped downward and opened to be horizontal, the side edge of the workbench can be placed on the end surface of the two rotating plates 101, the end of the horizontal lock rod on the workbench can fall between the two rotating plates 101, the rotating plate 106 is rotated to close to the end surface of the two rotating plates 101, and the lock seat 107 can be locked with the horizontal lock rod; when the side edge of the workbench and the rotating plate 106 are both placed on the end surface of the two rotating plates 101, the workbench and the rotating plate 106 are adjacent and do not affect each other.

[0065] The width of the step supporting surface is slightly wider than the thickness of the top of the door panel; the step supporting surface in the embodiment is the end surface a in the drawing.

[0066] The length of the end surface b of the lower end surface of the rotating plate can make the contact between the workbench and the rotating plate not less than 35mm.

[0067] Support plate 102 is a bent plate, its bent shape is same as the convex shape in the middle of rotating plate 101, the upper flat edge of support plate 102 is fixed with connecting plate 103; rotating plate, support plate and connecting plate are fixed integrally by welding.

[0068] Lock seat is fixed on rotating plate by bolt, nut or welding.

[0069] Fixed seat II is C-shaped and its opening can face downward or outward, preferably, its opening faces downward, so that welding space is more sufficient, and the lower end of fixed seat II is flush with the lower end surface of two rotating plates.

[0070] Rotating shaft I is parallel with the upper edge of door plate, and rotating shaft II is parallel with the lower end surface of rotating plate.

[0071] When installing the whole device, first, the installation of locking device between left and right door plates is determined by the orientation of the lock seat at the two ends of the horizontal locking rod on the workbench. Then, the installation position of the two locking devices in the door plate is determined by the position where the rotating plate can be clamped after being rotated and turned up. After the whole locking device is installed, the position of the bolt fixing seat is adjusted according to the position of the bolt rod, and the bolt fixing seat can be fixed on the door plate by riveting or welding.

[0072] The process of the lock to realize the support and locking of the workbench is as follows: the lock is installed on the inner wall of each of the two door plates of the valve box, and when the lock is not used, it is fixed on the inner wall of the two door plates; when the workbench is to be used, the two door plates of the valve box are opened, the bolt handle of the lock on the two door plates is pulled, the bolt rod is pulled out of the bolt fixing seat and the left rotating plate, the fixation of the rotating plate and the rotating plate on the door plate is released, the rotating plate is no longer closed to the lower end surface of the two rotating plates; the rotating plate is turned up, the step support surface (i.e. the end surface a in Figure 8 ) is clamped on the upper edge of the door plate, the workbench is turned down, the lower end of the table top of the workbench is clamped on the lower end surface of the rotating plate (i.e. the end surface b in Figure 8 ), the end of the horizontal locking rod on the workbench falls between the two rotating plates, the rotating plate is closed by rotating, the angle of the lock head at the two ends of the horizontal locking rod on the workbench is adjusted by rotating the handle of the horizontal locking rod, the lock head at the two ends is fallen into the lock seat of the rotating plate by rotating a small angle upward, then the bolt handle is pulled and the bolt rod is inserted into the rotating plate to fix the rotating plate, the position between the workbench and the valve box is fixed by locking the horizontal locking rod of the workbench. When the workbench is finished, the bolt handle is pulled out, the bolt rod is pulled out of the rotating plate, the angle of the lock head at the two ends of the horizontal locking rod of the workbench is adjusted by rotating, and the lock head is pulled out of the lock seat; the workbench is folded; the rotating plate is rotated downward as a whole to the inner side of the door plate of the valve box, then the bolt handle is pulled, the bolt rod is inserted into the rotating plate and the bolt fixing seat in sequence, and the device after use is fixed on the inner side of the door plate of the valve box, and the initial state is restored.

[0073] A plurality of horizontal ladder columns 20 are arranged between the upright column II 6 and the right corner column 2 at intervals from top to bottom to form a ladder.

[0074] The hinges I 10 are arranged at intervals in the vertical direction and the hinges II 14 are arranged at intervals in the horizontal direction.

[0075] The workbench crossbeam 7 is at least 500 mm from the upper end beam 1.

[0076] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details of the above-described embodiments. Various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0077] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again by the present application.

[0078] Furthermore, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and it should be considered as disclosed by the present application.

Claims

1. A door end structure of a cryogenic tank container, the cryogenic tank container comprising a tank, a frame and a pipeline, the tank being arranged in the frame, the pipeline being led out from the tank to outside of an end head of the tank; the frame comprising two end frames and upper and lower side beams connecting the two end frames; the end frame being enclosed by an upper end beam (1), a right corner column (2), a lower end beam (3) and a left corner column (4) in sequence; characterized in that, The door end structure is arranged at the end frame close to the pipeline side; the door end structure comprises a vertical column I (5), a vertical column II (6), a workbench cross beam (7), a valve box assembly, and a workbench assembly; The vertical column I (5) is parallel to the left corner column (4) and is fixed to the upper end beam (1) and the lower end beam (3) at both ends; the vertical column II (6) is parallel to the right corner column (2) and is fixed to the upper end beam (1) and the lower end beam (3) at both ends; and the workbench cross beam (7) connects the vertical column I (5) and the vertical column II (6); The valve box assembly is arranged in a lower end region surrounded by the vertical column I (5), the vertical column II (6), the workbench cross beam (7), and the lower end beam (3); the valve box assembly comprises a left door plate (8), a right door plate (9), a hinge I (10), a door sill (11), and a vertical door lock assembly (12); the left door plate (8) and the right door plate (9) can close the lower end region; the left door plate (8) is hinged to the vertical column I (5) on the left side through the hinge I (10); the right door plate (9) is hinged to the vertical column II (6) on the right side through the hinge I (10); the door sill (11) is parallel to the lower end beam (3); and the vertical door lock assembly (12) can lock the left door plate (8) and the right door plate (9); The workbench assembly is arranged in an upper end region surrounded by the vertical column I (5), the vertical column II (6), the workbench cross beam (7), and the upper end beam (1); the workbench assembly comprises a workbench door plate (13), a hinge II (14), and a horizontal lock assembly (15); the workbench door plate (13) can not only close the upper end region but also be flipped down to serve as a workbench; the workbench door plate (13) is hinged to the workbench cross beam (7) on the lower side through the hinge II (14); and the horizontal lock assembly (15) can lock the workbench door plate (13); The vertical door lock assembly (12) comprises a vertical lock rod (121), an upper lock seat (122), a lower lock seat (123), and a door lock handle (124); the vertical lock rod (121) is arranged along the vertical direction close to the right door plate (9); the upper lock seat (122) is matched with the upper end of the vertical lock rod (121) and is arranged on the workbench cross beam (7); the lower lock seat (123) is matched with the lower end of the vertical lock rod (121) and is arranged on the door sill (11); and the door lock handle (124) is connected with the middle part of the vertical lock rod (121) and is matched with a clamping seat on the right door plate (9); Cross-shaped reinforcing members (18) are arranged on the inner walls of the left door plate (8) and the right door plate (9); lock members (19) capable of being flipped vertically are respectively arranged on the upper parts of the cross-shaped reinforcing members (18) in the left door plate (8) and the right door plate (9); when the workbench door plate (13) is flipped down to be opened, the two lock members (19) are respectively flipped and clamped on the upper ends of the left door plate (8) and the right door plate (9); the horizontal lock rod (151) of the workbench door plate (13) can be locked in the two lock members (19); the upper ends of the two lock members (19) abut against the lower end surface of the workbench door plate (13); and the lower ends of the two lock members (19) abut against the top parts of the left door plate (8) and the right door plate (9). The lock piece (19) comprises a rotating plate (101), a supporting plate (102), a connecting plate (103), a rotating shaft I (104), a fixing base I (105), a rotating plate (106), a lock base (107), a rotating shaft II (108), a fixing base II (109), a bolt assembly (110), and a bolt fixing base (111). The rotating plate (101) comprises two parallel rotating plates (101) connected by the connecting plate (103), and the upper ends of the two rotating plates (101) are rotatably connected to the fixing base I (105) through the rotating shaft I (104). The rotating plate (106) is fixed with the lock base (107), and the right end of the rotating plate (106) is fixedly connected to the rotating shaft II (108) which is rotatably installed on the fixing base II (109) fixed to the outer side wall of the lower part of the right rotating plate (101).

2. The door end structure of a cryogenic tank container according to claim 1, wherein The sealing strips (16) are arranged between the workbench beam (7) and the upper edges of the left door plate (8) and the right door plate (9), between the workbench beam (7) and the upper edges of the left door plate (8) and the right door plate (9), between the left side edge of the left door plate (8) and the left side edge of the left column (5), and between the right side edge of the right door plate (9) and the right side edge of the right column (6).

3. The door end structure of a cryogenic tank container according to claim 1, wherein When the left door plate (8) and the right door plate (9) are closed, the left side edge of the right door plate (9) is pressed against the right side edge of the left door plate (8), and the U-shaped sealing strips (17) are arranged at the right side edge of the left door plate (8), the lower edge of the left door plate (8), and the lower edge of the right door plate (9).

4. The door end structure of a cryogenic tank container according to claim 1, wherein The transverse lock assembly (15) comprises a transverse lock rod (151), a left lock base (152), a right lock base (153), and a handle (154). The transverse lock rod (151) is arranged along the transverse direction and close to the upper end of the workbench door plate (13), the left lock base (152) is arranged on the left column (5) and matched with the left end of the transverse lock rod (151), the right lock base (153) is arranged on the right column (6) and matched with the right end of the transverse lock rod (151), and the handle (154) is connected with the transverse lock rod (151) and matched with the clamping base on the workbench door plate (13).

5. The door end structure of a cryogenic tank container according to claim 1, wherein The plurality of transverse ladder columns (20) are arranged between the right column (2) and the right corner column (6) from top to bottom to form a climbing ladder.

6. The door end structure of a cryogenic tank container according to claim 1, wherein The hinges I (10) are multiple and vertically spaced, and the hinges II (14) are multiple and horizontally spaced.

7. The door end structure of a cryogenic tank container according to claim 1, wherein The workbench crossbeam (7) is at least 500 mm away from the upper end beam (1).

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