Handrail self-locking device for a tank container
By designing a self-locking device for tank container handrails, the linkage mechanism between the handrail limit support and the locking plate is utilized to achieve automatic locking of the handrails, solving the safety hazard of improper locking in existing devices and improving the ease of operation and safety.
Patent Information
- Application Number
- CN202520040454.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Existing tank container handrail devices require manual operation and pose a safety hazard if not properly locked, especially in narrow overhead working areas and vibrating environments, which may lead to the safety risks of folding or slipping.
A self-locking device for a tank container handrail was designed. It adopts a linkage mechanism between the handrail limiting support and the handrail limiting lock plate, and uses gravity and structural constraints to achieve automatic locking. The handrail limiting lock plate can rotate within a range of 70°±5°. Combined with the U-shaped slot and 90° folded edge design, it ensures automatic locking and avoids jamming.
The automatic locking of the handrails reduces operational complexity, improves safety, avoids dangers caused by improper manual operation, and ensures the safety and stability of the top working environment.
Smart Images
Figure CN223575225U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tank container technical field especially relates to a tank container handrail self locking device. BACKGROUND
[0002] Tank container is a kind of special container widely used in liquid and gas transportation, it is mainly composed of tank and frame, with its high strength, good sealing performance and the characteristics of convenient loading and unloading, become the important equipment in modern logistics field. In order to meet the needs of transportation safety and operation convenience, tank container top is usually provided with valve assembly and manhole, and operating personnel need to carry out relevant operation on top.
[0003] However, there is certain risk in the operation environment of tank container top, especially in the process of tank container transportation and loading and unloading, the top catwalk operation area is narrow and is easily affected by transportation vibration. In order to reduce the safety accidents caused by falling in top operation, many tank containers are equipped with folding handrail device on one side or both sides of top catwalk. These devices can be opened when operating to provide safety protection for operating personnel, and are folded when not in use to facilitate transportation and storage.
[0004] Although the existing folding handrail device has certain safety protection function, there are still deficiencies in actual application, the existing handrail device needs manual opening and locking, and there is the case that handrail limiting lock plate cannot be placed in place in time automatically when operating, which can cause incorrect locking of handrail and produce safety hazard. UTILITY MODEL CONTENTS
[0005] The utility model aims at solving the problems in the background art and provides a tank container handrail self locking device.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tank container handrail self locking device, including tank box top side beam, is arranged on the top of tank box, the side surface of tank box top side beam is fixedly connected with handrail shaft sleeve assembly, the handrail shaft sleeve assembly includes the shaft sleeve fixedly connected on the side surface of tank box top side beam, the shaft sleeve is rotatably connected with handrail vertical rod, further including:
[0007] Handrail limiting support welded on tank box top side beam;
[0008] Handrail limiting lock plate rotatably connected with the handrail limiting support;
[0009] Sleeve fixed on the handrail limiting lock plate;
[0010] Hexagon bolt passing through the sleeve;
[0011] Self-locking nut matched with the hexagon bolt;
[0012] The handrail limiting lock plate rotates within a range of 70°±5° horizontally upwards.
[0013] Preferably, the handrail limiting support is made of 304 stainless steel material with a thickness of 2-4 mm, and the tank top side beam is made of carbon steel material.
[0014] Preferably, the handrail limiting lock plate and the sleeve are made of 304 stainless steel material, and the handrail limiting lock plate has a thickness of 2-4 mm.
[0015] Preferably, the handrail limiting lock plate is provided with a bevel of 22°±5° at the left end, and a U-shaped slot hole is formed in the middle of the handrail limiting lock plate, and the diameter of the U-shaped slot hole is 0.2 mm larger than the diameter of the handrail vertical rod.
[0016] Preferably, the handrail limiting lock plate is provided with a downward 90° folded edge on the side away from the sleeve, for increasing the self-weight.
[0017] Preferably, the height of the handrail limiting support is not more than the height of the tank top side beam, and a limiting groove is formed in the handrail limiting support for limiting the rotation range of the handrail limiting lock plate.
[0018] Preferably, the handrail limiting support is positioned away from the handrail shaft sleeve assembly in the horizontal direction, and does not affect the opening or folding of the handrail vertical rod.
[0019] Preferably, the handrail vertical rod rotates around the shaft sleeve at an angle of 0-90°.
[0020] Compared with the prior art, the handrail self-locking device of the tank container has the following advantages:
[0021] 1. The handrail self-locking device of the tank container effectively solves the safety hazards of folding and falling caused by incorrect locking in the existing handrail device, through the unique design of the handrail limiting support and the handrail limiting lock plate. The handrail limiting lock plate can rotate within a range of 70°±5°, and is automatically locked by using gravity and structural limitation, without the need for additional manual intervention, thereby avoiding the dangers caused by improper manual operation. Meanwhile, the U-shaped slot hole of the handrail limiting lock plate is reasonably designed, with a diameter that is slightly larger than that of the handrail vertical rod by 0.2 mm, so as to ensure the locking function while avoiding the jamming phenomenon. The downward 90° folded edge further enhances the self-weight and stability of the lock plate, so that the locking function is more reliable. Through the above optimization design, the device not only improves the safety, but also reduces the operation complexity of the user, thereby providing effective protection for the safety of the top operation environment. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a schematic structural view of the handrail installation of the utility model.
[0023] Figure 2 is the front view structural schematic diagram of the utility model Figure 1 A place amplification structure schematic diagram in the middle;
[0024] Figure 3 is the front view structural schematic diagram of the utility model
[0025] Figure 4 is the side view structural schematic diagram of the utility model;
[0026] Figure 5 is the handrail limiting lock plate structure schematic diagram in the utility model Figure 1 ;
[0027] Figure 6 is the handrail limiting lock plate structure schematic diagram in the utility model Figure 2 ;
[0028] Figure 7 is the handrail limiting lock plate structure schematic diagram in the utility model Figure 3 ;
[0029] Figure 8 is the handrail limiting lock plate structure schematic diagram in the utility model Figure 1 ;
[0030] Figure 9 is the handrail limiting lock plate structure schematic diagram in the utility model Figure 2 ;
[0031] Figure 10 is the handrail limiting lock plate structure schematic diagram of the utility model Figure 4 ;
[0032] Figure 11 is the handrail limiting lock plate structure schematic diagram of the utility model Figure 5 ;
[0033] Figure 12 is the handrail limiting lock plate structure schematic diagram of the utility model Figure 6 ;
[0034] Figure 13 is the handrail limiting lock plate structure schematic diagram of the utility model
[0035] In the drawing: 100, tank box top side beam;101, handrail shaft sleeve assembly;102, shaft sleeve;103, handrail vertical rod;104, handrail limiting support;105, handrail limiting lock plate;106, sleeve;107, hexagonal bolt;108, self-locking nut;109, U-shaped slot hole;110, flanging;111, limiting groove;112, bevel. DETAILED DESCRIPTION
[0036] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments.
[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.
[0038] Embodiments
[0039] The existing handrail device at the top of the tank container generally needs manual operation, and the design does not fully consider the complexity of the top operation environment, such as limited space, vibration during transportation, user operation convenience and the like. The handrail device may have safety hazards such as folding and falling in the case of incorrect locking, and the weight of the handrail limiting lock plate is insufficient or the structure is unreasonable, resulting in the case that the handrail is not automatically locked.
[0040] In order to solve the above problems, a tank container handrail self-locking device is disclosed, please refer to 1-13, including tank box top side beam 100, which is arranged at the top of the tank, the side surface of the tank box top side beam 100 is fixedly connected with the handrail shaft sleeve assembly 101, the handrail shaft sleeve assembly 101 includes the shaft sleeve 102 fixedly connected with the side surface of the tank box top side beam 100, the shaft sleeve 102 is rotatably connected with the handrail vertical rod 103, the rotation angle of the handrail vertical rod 103 around the shaft sleeve 102 is 0-90°, so as to realize the opening and folding of the handrail vertical rod 103, further comprising:
[0041] The handrail limiting support 104 is welded on the tank box top side beam 100;
[0042] The handrail limiting lock plate 105 is rotatably connected with the handrail limiting support 104;
[0043] The sleeve pipe 106 is fixed on the handrail limiting lock plate 105;
[0044] The hexagonal bolt 107 passes through the sleeve pipe 106;
[0045] The self-locking nut 108 cooperates with the hexagonal bolt 107, which not only improves the reliability of the structure, but also greatly reduces the use of additional parts, reduces the manufacturing cost and assembly complexity. The design of the self-locking nut 108 ensures that the device still has stability and reliability after long-term use, and adapts to the vibration environment under various transportation conditions.
[0046] The handrail limiting lock plate 105 rotates within a range of 70°±5° upward horizontally, effectively controls the rotation range, and avoids safety hazards caused by excessive overturning.
[0047] The handrail limiting support 104 is made of 304 stainless steel material with a thickness of 2-4 mm, and the tank top side beam 100 is made of carbon steel material, which provides good strength to support the stability of the entire handrail device and reduces the welding workload by more than 50%, thereby reducing the risk of welding deformation of the tank top side beam 100.
[0048] The handrail limiting lock plate 105 and the sleeve 106 are made of 304 stainless steel material, and the handrail limiting lock plate 105 has a thickness of 2-4 mm.
[0049] In order to realize automatic locking of the handrail vertical rod 103, the left end of the handrail limiting lock plate 105 is provided with a bevel 112 of 22°±5°, which is used to guide the smooth movement of the handrail vertical rod 103 when it contacts the bevel 112, thereby avoiding the phenomenon of jamming. A U-shaped slot hole 109 is formed in the middle of the handrail limiting lock plate 105, and the diameter of the U-shaped slot hole 109 is 0.2 mm larger than the diameter of the handrail vertical rod 103. The matching of the bevel 112 and the handrail vertical rod 103 is greatly improved, so that when the handrail vertical rod 103 touches the bevel 112 during opening, it automatically pushes the handrail limiting lock plate 105 to overturn upward. When the handrail vertical rod 103 is rotated to the vertical state, the handrail limiting lock plate 105 automatically flattens under the action of gravity, ensuring the self-locking function.
[0050] A downward 90° folded edge 110 is arranged on the side of the handrail limiting lock plate 105 away from the sleeve 106, which is used to increase the weight. The design of the folded edge 110 avoids the phenomenon that the handrail limiting lock plate 105 does not fall in time due to external vibration or insufficient gravity, ensuring that the handrail vertical rod 103 always remains locked in the vertical state. The folded edge 110 also avoids the handrail vertical rod 103 from continuing to rotate to a dangerous angle when it is not locked, reducing the possibility of accidental operation by personnel.
[0051] The height of the handrail limiting support 104 does not exceed the height of the tank top side beam 100, and a limiting slot 111 is formed in the handrail limiting support 104, which is used to limit the rotation range of the handrail limiting lock plate 105, ensuring that the handrail vertical rod 103 can maintain a safe rotation angle during operation.
[0052] The handrail limiting support 104 is positioned horizontally away from the position of the handrail shaft sleeve assembly 101, which does not affect the opening or folding of the handrail vertical rod 103, and improves the operation flexibility.
[0053] The self-locking device of the tank container handrail of the present application realizes the automatic locking and folding of the handrail vertical rod 103 based on the linkage mechanism among the handrail limiting support 104, the handrail limiting lock plate 105 and the handrail vertical rod 103. The handrail limiting support 104 is fixed on the tank top side beam 100 by welding, and its height is designed to avoid the position of the handrail shaft sleeve assembly 101 to ensure the free rotation of the handrail vertical rod 103. The handrail limiting lock plate 105 is rotationally connected with the handrail limiting support 104 through the sleeve pipe 106, and the rotation range of the handrail limiting lock plate 105 is controlled by the limiting groove 111 to be 70°±5° horizontally upward. The automatic locking of the handrail vertical rod 103 is realized through the gravity effect and the self-weight design of the 90° folding edge 110.
[0054] In use, the unfolding operation of the handrail is performed, and it is checked that the handrail limiting lock plate 105 is in the flat state to ensure that the handrail limiting lock plate 105 can rotate freely. The handrail vertical rod 103 is manually rotated to rotate clockwise around the shaft sleeve 102 from the horizontal state. When the end of the handrail vertical rod 103 touches the inclined edge of the handrail limiting lock plate 105, the handrail limiting lock plate 105 will automatically flip upward, and the handrail vertical rod 103 continues to rotate to the vertical state, and its end enters the U-shaped groove hole 109 of the handrail limiting lock plate 105. The handrail limiting lock plate 105 automatically flattens under the action of gravity to complete the locking of the handrail vertical rod 103, and ensure that the handrail is in a stable vertical state.
[0055] The folding operation of the handrail is performed, the handrail limiting lock plate 105 is lifted by hand to a height that does not block the handrail vertical rod 103, and the handrail vertical rod 103 is manually rotated to rotate counterclockwise from the vertical state to the horizontal state.
[0056] The handrail vertical rod 103 is folded and attached to the top of the tank, and it is checked whether the handrail limiting lock plate 105 automatically returns to the flat state to ensure that the device is reset in place.
[0057] Finally, it is necessary to regularly check whether the connection of the handrail limiting support 104 and the handrail limiting lock plate 105 is tightened, whether the hexagonal bolt 107 and the self-locking nut 108 have loosening phenomenon. Foreign matters in the U-shaped groove hole 109 and the sleeve pipe 106 are removed to ensure the smoothness of locking and rotation. It is checked whether the 90° folding edge 110 of the handrail limiting lock plate 105 is deformed or damaged, and it is replaced if necessary.
[0058] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A self-locking device for a handrail of a tank container, comprising a top side beam (100) of the tank container, disposed on the top of the tank container, wherein a handrail bushing assembly (101) is fixedly connected to the side of the top side beam (100), the handrail bushing assembly (101) comprising a bushing (102) fixedly connected to the side of the top side beam (100), and a handrail vertical rod (103) rotatably connected to the bushing (102), characterized in that, Also includes: Handrail limiting support (104) welded to the side beam (100) on the top of the tank container; Handrail limiting lock plate (105) rotatably connected to the handrail limiting support (104); A sleeve (106) fixed on the handrail limiting lock plate (105); A hexagonal bolt (107) passes through the sleeve (106); A self-locking nut (108) that mates with the hexagonal bolt (107); The handrail limiting lock plate (105) can rotate within a range of 70°±5° horizontally upward.
2. The self-locking device for a tank container handrail according to claim 1, characterized in that: The handrail limiting support (104) is made of 304 stainless steel with a thickness of 2-4mm, and the tank top side beam (100) is made of carbon steel.
3. The self-locking device for a tank container handrail according to claim 1, characterized in that: The handrail limiting lock plate (105) and sleeve (106) are made of 304 stainless steel, and the thickness of the handrail limiting lock plate (105) is 2-4mm.
4. The self-locking device for a tank container handrail according to claim 1, characterized in that: The left end of the handrail limiting lock plate (105) is provided with a 22°±5° inclined edge (112), and the middle part of the handrail limiting lock plate (105) is provided with a U-shaped slot (109), and the diameter of the U-shaped slot (109) is 0.2mm larger than the diameter of the handrail vertical bar (103).
5. The self-locking device for a tank container handrail according to claim 1, characterized in that: The handrail limiting locking plate (105) has a downward 90° folded edge (110) on the side away from the sleeve (106) to increase its weight.
6. The self-locking device for a tank container handrail according to claim 1, characterized in that: The height of the handrail limiting support (104) does not exceed the height of the tank top side beam (100). The handrail limiting support (104) has a limiting groove (111) which is used to limit the rotation range of the handrail limiting lock plate (105).
7. The self-locking device for a tank container handrail according to claim 1, characterized in that: The handrail limiting support (104) avoids the position of the handrail bushing assembly (101) in the horizontal direction, and does not affect the opening or folding of the handrail vertical bar (103).
8. The self-locking device for a tank container handrail according to claim 1, characterized in that: The handrail vertical rod (103) rotates around the bushing (102) at an angle of 0-90°.