Storage and transport equipment and handrail arrangement therefor

Abstract

The application provides a storage and transportation equipment and a handrail device thereof. The handrail device comprises a handrail, a connecting piece and a driving mechanism. The handrail comprises a horizontal rod and a plurality of vertically arranged rods. The connecting piece comprises a first connecting part and a second connecting part which are arranged in parallel and spaced apart in the transverse direction. The first connecting part has a receiving space for accommodating a lower part of one of the vertical rods. The second connecting part is located outside the first connecting part. The driving mechanism comprises a cylinder, a telescopic rod which is retractable relative to the cylinder, and a driving part. The driving part comprises a pneumatic operating part arranged at the bottom of a tank body. The cylinder is fixed to the top of the tank body. The telescopic end of the telescopic rod is rotatably connected to the second connecting part. The second connecting part has an inclined surface which is inclined upward away from the telescopic rod when the vertical rod is erected. When the telescopic rod is retracted, the connecting piece and the vertical rod are driven to rotate, so that the vertical rod is erected and unfolded upward or is folded downward.

Description

Technical Field

[0001] This invention relates to a storage and transportation device and accessories thereof, and particularly to a storage and transportation device and handrail assembly thereof. Background Technology

[0002] To minimize the risks to workers operating on top of tank containers, tank trucks, and other storage and transportation equipment, most such equipment is now equipped with folding handrails on one or both sides of its top. When needed, the handrails are extended to a certain height to prevent workers from falling from the top of the equipment, ensuring operational safety. When not in use, the handrails are folded back on top of the equipment for easy transport.

[0003] Most existing folding handrails can only be folded or erected from the top of the storage and transportation equipment. Therefore, when raising or lowering the handrail, operators must climb to the top of the equipment. Due to the limited space at the top, operators are highly susceptible to losing their balance and falling. Therefore, ground-operated handrails are currently the norm. However, existing ground-operated handrails are generally mechanical linkage mechanisms, which are complex in structure and relatively labor-intensive to operate. Summary of the Invention

[0004] The purpose of this invention is to provide a handrail device that can be operated on the ground and a storage and transportation device using the handrail device, so as to solve the problems in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a handrail device for storage and transportation equipment, the storage and transportation equipment including a tank, the handrail device being disposed on at least one side of the top of the tank, characterized in that the handrail device includes:

[0006] The handrail includes a horizontal bar and a plurality of spaced vertical bars; the horizontal bar extends longitudinally; the top end of each vertical bar is rotatably connected to the horizontal bar, and the bottom end is rotatably connected to the top of the tank body;

[0007] The connector includes a first connecting portion and a second connecting portion arranged parallel to each other in the transverse direction; the first connecting portion has a receiving space to receive the lower part of one of the vertical rods; the second connecting portion is located outside the first connecting portion;

[0008] The driving mechanism includes a cylinder, a telescopic rod that is retractable relative to the cylinder, and a driving component connected to the cylinder to drive the telescopic rod to extend and retract. The driving component includes a pneumatic operating component disposed at the bottom of the tank body. The cylinder is fixed to the top of the tank body, and the telescopic end of the telescopic rod is rotatably connected to the second connecting part.

[0009] The second connecting part has an inclined surface. When the vertical rod is upright, the inclined surface is inclined upward in a direction away from the telescopic rod. When the telescopic rod extends or retracts, it drives the connecting part and the vertical rod to rotate, so that the vertical rod rotates upward to stand upright and unfold, or the vertical rod rotates downward to retract.

[0010] In one embodiment, the first connecting portion and the second connecting portion are connected by a transition portion, the transition portion extending vertically and having a clearance surface that slopes downward from the inside to the outside, and the transition portion is connected to the end of the second connecting portion near the telescopic rod.

[0011] The telescopic end of the telescopic rod is connected to the end of the second connecting part away from the telescopic rod.

[0012] In one embodiment, the first connecting portion has an opening facing inward.

[0013] In one embodiment, the vertical rod includes end vertical rods located at both ends, and a middle vertical rod located between the two end vertical rods;

[0014] The first connecting part is fixedly connected to one of the central vertical rods.

[0015] In one embodiment, the cylinder is mounted on the top of the tank via a mounting base; the mounting base includes:

[0016] The first mounting plate extends horizontally, fits against the bottom of the walkway of the storage and transportation equipment, and connects to the walkway;

[0017] The second mounting plate extends vertically, fits against the outside of the walkway, and connects to the walkway;

[0018] An intermediate plate connects the first mounting plate and the second mounting plate, and the intermediate plate has a mounting portion protruding from the second mounting plate, the mounting portion extending vertically for rotatable connection with the cylinder.

[0019] In one embodiment, the handrail further includes a telescopic rod; the telescopic rod is disposed at the front end of the horizontal rod, and when the handrail is unfolded, the telescopic rod can extend or retract relative to the horizontal rod.

[0020] In one embodiment, the drive includes:

[0021] An air supply pipe is connected to the chamber of the cylinder and is used to supply air to the cylinder;

[0022] The pneumatic operating component is located at the rear end of the tank to control the connection and disconnection between the cylinder and the air source.

[0023] In one embodiment, the drive unit further includes an oil-water separator disposed upstream of the cylinder;

[0024] The drive unit also includes a flow regulating valve disposed at the bottom of the rear end of the tank body, the flow regulating valve being disposed upstream of the cylinder;

[0025] The drive unit also includes a reversing valve disposed on the pneumatic operating unit to reverse the air source.

[0026] In one embodiment, the handrail device further includes a limiting plate corresponding to each of the vertical bars, so as to limit the vertical bars in the upright state to maintain the unfolded state of the handrail.

[0027] The handrail device further includes at least one support frame; each support frame includes a transition plate and a support plate, the transition plate being fixed to the top of the tank, and the support plate extending horizontally to support the horizontal bar when the horizontal bar is rotated downwards to a horizontal position.

[0028] The present invention also provides a storage and transportation device, including a tank and a handrail device as described above, wherein the top of the tank is provided with a walkway and / or a top side beam, and the vertical bar is connected to the walkway or the top side beam.

[0029] As can be seen from the above technical solution, the advantages and positive effects of the present invention are as follows:

[0030] The handrail device of this invention includes a handrail, a connector, and a drive mechanism. The drive mechanism includes a cylinder, a telescopic rod, and a drive component. The telescopic rod connects to the connector, driving the connector and the handrail to rotate. The pneumatic operating component of the drive component is located at the bottom of the container, allowing operation from the ground to unfold or retract the handrail. Furthermore, this drive mechanism uses pneumatics to unfold or retract the handrail, making the process easier and more convenient. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of one embodiment of the storage and transportation equipment of the present invention.

[0032] Figure 2 This is the present invention. Figure 1 The main view.

[0033] Figure 3 This is a front view of the handrail in this invention when it is retracted.

[0034] Figure 4 This is a top view of the handrail in this invention when it is retracted.

[0035] Figure 5This is a partial structural schematic diagram of the drive mechanism, connecting parts, and central vertical rod of the present invention.

[0036] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0037] Figure 7 This is a schematic diagram of the connector of the present invention from another direction.

[0038] The reference numerals in the attached drawings are explained as follows: 1. Walkway; 2. Handrail device; 21. Handrail; 211. Horizontal bar; 212. End vertical bar; 213. Middle vertical bar; 214. Telescopic bar; 215. Reinforcing member; 22. Connecting member; 221. First connecting part; 222. Second connecting part; 223. Transition part; 231. Cylinder; 232. Mounting base; 2321. First mounting plate; 2322. Second mounting plate; 2323. Intermediate plate; 2326. Inclined part; 2327. First horizontal part; 2328. Vertical part; 2329. Second horizontal part; 233. Telescopic bar; 241. End limiting plate; 242. Middle limiting plate; 25. Support frame. Detailed Implementation

[0039] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations herein are for illustrative purposes only and not intended to limit the present invention.

[0040] To further illustrate the principles and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] The present invention provides a storage and transportation device, including a tank and a handrail device installed on the top of the tank.

[0042] The storage and transportation equipment can be either tank containers or tank trucks. The top of the tank may only have a walkway, or it may have both a frame and a walkway.

[0043] For ease of description, the length of the tank is defined as longitudinal, the width as transverse, the part closer to the driver's cab as the front end, and the part farther from the driver's cab as the rear end.

[0044] The handrail device in this application is pneumatically controlled and is not affected by ladders, and can be installed on both sides of the tank top. Therefore, the handrail device can be installed on one side of the tank top or on both sides of the tank top, as needed.

[0045] Figure 1 , Figure 2 , Figure 3 and Figure 4 All diagrams show structural schematics of the walkway and the handrail installed on one side of it. The following explanations will use examples of the walkway and the handrail installed on one side of it.

[0046] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The handrail device 21 includes a handrail 21, a connector 22, and a drive mechanism. The drive component of the drive mechanism is located at the bottom of the tank. Through the connection of the connector 22, the operator can unfold or retract the handrail 21 from the ground.

[0047] Specifically, the handrail 21 includes a horizontal bar 211 and a plurality of vertical bars spaced apart.

[0048] The horizontal bar 211 extends longitudinally, meaning it is parallel to the walkway 1. In this embodiment, the horizontal bar 211 is cylindrical, meaning its cross-section is circular. In other embodiments, the horizontal bar 211 has a square cross-section, meaning it is tubular.

[0049] The top of the vertical pole is rotatably connected to the horizontal pole 211, and the bottom is rotatably connected to the frame or walkway 1. In this embodiment, the connection between the bottom of the vertical pole and the walkway 1 is taken as an example.

[0050] The vertical rod includes end vertical rods 212 located at both ends, and a middle vertical rod 213 located between the two end vertical rods 212. In this embodiment, there is one middle vertical rod 213. In other embodiments, there may be two, three, or other numbers of middle vertical rods 213.

[0051] Specifically, when the vertical bar is rotated upwards to stand upright, the handrail 21 is in an unfolded state; when the vertical bar is rotated downwards to be basically horizontal, the handrail 21 is in a retracted state.

[0052] The length of the horizontal bar 211 along its longitudinal direction is less than the length of the tank. Furthermore, when the handrail 21 is in the retracted state, the horizontal bar 211 does not extend beyond either end of the tank. It should be noted that when a frame is installed around the outside of the tank, the horizontal bar 211 does not extend beyond either end of the tank or the entire frame.

[0053] Furthermore, the handrail 21 also includes a telescopic bar 233. The telescopic bar 233 is located at the front end of the horizontal bar 211, and can extend or retract relative to the horizontal bar 211 when the handrail 21 is extended.

[0054] Specifically, the horizontal bar 211 is hollow inside and has an accommodating space. The outer diameter of the telescopic bar 233 is smaller than the inner diameter of the horizontal bar 211, so that the telescopic bar 233 can be located within the accommodating space.

[0055] The telescopic rod 233 has a handle at its front end for the operator to operate, so as to pull the telescopic rod 233 out or retract it relative to the horizontal bar 211. During operation, the operator holds the handle and applies a forward force to extend the telescopic rod 233 forward; or the operator holds the handle and applies a backward force to retract the telescopic rod 233 backward.

[0056] Furthermore, the handrail 21 also includes a reinforcing member 215. The reinforcing member 215 is parallel to the horizontal bar 211 and is connected to the central region of each vertical bar. The central region refers to the area along the length of the vertical bar, including the center point of the vertical bar, but excluding the two ends.

[0057] In this embodiment, the reinforcing member 215 is a steel wire rope.

[0058] The connector 22 is used to connect the vertical rod and the drive mechanism. Specifically, the connector 22 is fixedly connected to the central vertical rod 213.

[0059] Combination Figure 5 , Figure 6 and Figure 7 The connector 22 includes a first connecting part 221 and a second connecting part 222.

[0060] The first connecting portion 221 has a accommodating space to accommodate the lower part of the central vertical rod 213. Specifically, the first connecting portion 221 includes two parallel and spaced-apart side plates and a connecting plate located between the two side plates. The two side plates are spaced longitudinally, and the two side plates and the connecting plate together enclose a structure with an accommodating space. The opening of this structure faces inward, thereby facilitating the connection between the first connecting portion 221 and the central vertical rod 213. Here, "inner" and "outer" are used with reference to the usage state of the storage and transportation equipment; the direction towards the tank axis is the inner side, and vice versa.

[0061] The second connecting portion 222 is disposed outside the first connecting portion 221, and the two are spaced apart laterally. The second connecting portion 222 is plate-shaped and extends longitudinally. The second connecting portion 222 has an inclined surface. When the vertical bar is in the upright state, that is, when the handrail 21 is unfolded, the inclined surface is inclined upward in the direction away from the drive mechanism.

[0062] When the handrail 21 is in the extended state, the connection point between the second connecting part 222 and the telescopic rod 233 is located at the top away from the drive mechanism. That is, when the handrail 21 is in the extended state, the end of the second connecting part 222 away from the drive mechanism is connected to the telescopic rod 233.

[0063] The setting of the connection point and the setting of the inclined surface of the second connection part 222 can ensure that the telescopic rod 233 and the connector 22 do not interfere with each other when the telescopic rod 233 is telescopic, and the connector 22 is in the vertical state when the handrail 21 is in the unfolded state.

[0064] In this embodiment, the connector also satisfies the following conditions: when the telescopic rod 233 is fully retracted, the handrail 21 is in a retracted state; when the telescopic rod 233 is fully extended, the handrail 21 is in an extended state. The first connecting portion 221 and the second connecting portion 222 are connected by a transition portion 223. The transition portion 223 is plate-shaped and extends laterally. The transition portion 223 is disposed at the ends of the first connecting portion 221 and the second connecting portion 222 near the drive mechanism.

[0065] The transition section 223 also has a clearance surface to avoid the drive mechanism. The clearance surface slopes downward from the inside to the outside.

[0066] When the handrail 21 is in the retracted state, the top of the connector 22 does not exceed the top of the tank. Furthermore, the top of the connector 22 does not exceed the upper surface of the walkway 1. When the storage and transportation equipment is a tank container, the design that the top of the connector 22 does not exceed the top of the tank during tank container stacking avoids interference between the connector of one storage tank equipment and the tank of another storage and transportation equipment.

[0067] In this embodiment, the connector 22 is integrally formed. The drive mechanism is used to drive the movement of the connector 22, thereby driving the movement of the handrail 21. Specifically, the drive mechanism includes a drive component, a cylinder 231, and a telescopic rod 233.

[0068] The drive unit includes an air source connector, a reversing valve, and a pneumatic operating component. The air source connector is used to connect the air source and the cylinder 231, so that the stored air source can be transmitted to the cavity of the cylinder 231.

[0069] The pneumatic operating mechanism is located at the rear of the tank bottom for easy operation. Specifically, the handrail 21 can be unfolded and retracted by operating the pneumatic operating mechanism.

[0070] A reversing valve is located upstream of the cylinder to switch the air supply direction. In this embodiment, the reversing valve is located on the air supply pipe. Specifically, the reversing valve is a two-position five-way reversing valve.

[0071] Furthermore, the drive unit also includes an oil-water separator located upstream of the cylinder to separate and remove oil, water, and impurities from the air source. In this embodiment, the oil-water separator is located downstream of the air source connector and upstream of the reversing valve.

[0072] The drive unit also includes a flow regulating valve to regulate the flow rate of gas entering the cylinder 231, thereby regulating the speed at which the handrail 21 unfolds and retracts. Specifically, the flow regulating valve is located at the bottom of the rear end of the tank. In this embodiment, the flow regulating valve is located downstream of the reversing valve and upstream of the cylinder. The cylinder 231 is located at the top of the tank and on the side of the frame or walkway 1. Specifically, in this embodiment, the cylinder 231 is connected to the walkway 1. The cylinder 231 is connected to the walkway 1 via a mounting base 232.

[0073] Mounting base 232 is located in front of the central vertical rod 213. Specifically, mounting base 232 includes a horizontally arranged first mounting plate 2321, a vertically arranged second mounting plate 2322, and an intermediate plate 2323 connecting the first mounting plate 2321 and the second mounting plate 2322.

[0074] The first mounting plate 2321 is disposed below the walkway 1, and the first mounting plate 2321 has bolt holes extending vertically along its axis. The first mounting plate 2321 is attached to the bottom of the walkway 1 and is bolted to the walkway 1.

[0075] The second mounting plate 2322 is disposed on the outer side of the walkway 1, and the second mounting plate 2322 is provided with bolt holes extending laterally along the axis. The second mounting plate 2322 is attached to the outer side of the walkway 1 and is bolted to the walkway 1.

[0076] The intermediate plate 2323 includes an inclined portion 2326, a first horizontal portion 2327, a vertical portion 2328, and a second horizontal portion 2329.

[0077] The inclined portion 2326 slopes downward from the inside out. The first horizontal portion 2327 and the second horizontal portion 2329 both extend horizontally, with the second horizontal portion 2329 located above the first horizontal portion 2327. The vertical portion 2328 extends vertically, and the vertical portion 2328 and the inclined portion 2326 are located on both sides of the first horizontal portion 2327.

[0078] The inner side of the inclined portion 2326 is connected to the first mounting plate 2321, and the inner side of the second horizontal portion 2329 is connected to the bottom of the second mounting plate 2322. The second horizontal portion 2329 is provided such that the vertical portion 2328 protrudes outward from the second mounting plate 2322, and the width of the second horizontal portion 2329 in the lateral direction is smaller than that of the first horizontal portion 2327.

[0079] The mounting base 232 is connected to the walkway 1 by the first mounting plate 2321 and the second mounting plate 2322, which provides both horizontal and vertical connections, thereby increasing the connection strength between the mounting base 232 and the walkway 1.

[0080] In this embodiment, the mounting base 232 is integrally formed.

[0081] Cylinder 231 is rotatably connected to mounting base 232. Specifically, cylinder 231 and the vertical portion of mounting base 232 are rotatably connected via a rotating shaft. In this embodiment, the rotating shaft extends laterally and is fixedly connected to the mounting base. The cylinder is sleeved on the outer circumference of the rotating shaft, thereby achieving a rotatable connection between cylinder 231 and mounting base 232.

[0082] When cylinder 231 is installed with mounting base 232, cylinder 231 is tilted and the angle between cylinder 231 and the horizontal plane is acute.

[0083] The telescopic rod 233 has a telescopic end that can move closer to or further away from the cylinder 231. The telescopic end of the telescopic rod 233 is rotatably connected to the connecting member 22. Specifically, the telescopic end is rotatably connected to the second connecting part 222. When the central vertical rod 213 is erected, the second connecting part 222 is also erected, and at this time, the telescopic end is connected to the top of the second connecting part 222.

[0084] In this embodiment, the telescopic rod 233 has two parallel, spaced-apart side wings at its telescopic end. The side wings are positioned on the inner and outer sides of the second connecting portion 222, respectively, meaning the second connecting portion 222 is located between the two side wings. Furthermore, through holes are provided at corresponding positions between the side wings and the second connecting portion 222. A rotating shaft passes through both side wings and the second connecting portion 222, thereby achieving a rotatable connection between the telescopic rod 233 and the second connecting portion 222.

[0085] The handrail device 21 also includes limiting plates disposed on the outside of the walkway 1 to restrict the continued rotation of the vertical railing. Specifically, in this embodiment, there are three limiting plates, corresponding one-to-one with the three vertical rails. The three limiting plates are the end limiting plates 241 and the middle limiting plate 242.

[0086] Both end limiting plates 241 are located at the rear end of the corresponding end vertical rods 212. Each end limiting plate 241 is provided with a limiting groove with an opening facing the front end to accommodate the end vertical rod 212. When the end vertical rod 212 is upright, it is exactly located within the limiting groove, thereby restricting the end vertical rod 212 from continuing to rotate rearward. The limiting groove also restricts the movement of the end vertical rod 212 in the lateral direction.

[0087] The central limiting plate 242 includes a stop portion and a reinforcing portion. The stop portion extends vertically to abut against the upright central vertical rod 213, thereby restricting the central vertical rod 213 from continuing to rotate backward. The reinforcing portion extends horizontally to increase the strength of the central limiting plate 242. Specifically, the central limiting plate 242 is L-shaped.

[0088] The handrail 21 device 2 also includes a support frame 25, which supports the horizontal bar 211 when the handrail 21 is retracted, so that the horizontal bar 211 is in a horizontal state. In this embodiment, there are two support frames 25, which are located on both sides of the tank, that is, one handrail 21 corresponds to one support frame 25.

[0089] Specifically, in this embodiment, the support frame 25 is located at the front end. Furthermore, the support frame 25 is located at the front end of all vertical rods.

[0090] The support frame 25 includes a transition plate and a support plate. The transition plate extends vertically, is close to the outside of the walkway 1, and is bolted to the walkway 1.

[0091] The support plate extends horizontally and is fixedly connected to the transition plate. The end of the support plate opposite to the transition plate also has an upwardly bent baffle to prevent lateral movement of the horizontal bar 211 on the support plate.

[0092] The handrail 21 device 2 of the present invention is in a position when the operator is working. Figure 1 As shown, the handrail 21 is in an upright and extended state, and the telescopic bar 233 extends relative to the horizontal bar 211 to increase the protection range of the handrail 21.

[0093] When the handrail 21 needs to be retracted, press the pneumatic operating component. At this time, the telescopic rod 233 retracts into the cylinder 231, that is, the telescopic rod 233 moves from back to front, driving the connecting piece 22 and the middle vertical rod 213 to rotate forward until the horizontal rod 211 is located on the support frame 25, so that the end vertical rod 212 and the middle vertical rod 213 are folded on the top of the tank, completing the folding of the handrail 21.

[0094] The opening operation of the handrail 212 of the present invention is basically the opposite of the aforementioned folding operation. First, press the pneumatic operating component. At this time, the telescopic rod 233 extends out of the cylinder 231, that is, the telescopic rod 233 moves from front to back, driving the connecting piece 22 and the middle vertical rod 213 to rotate backward or upward until the end vertical rod 212 is locked in the limiting groove and the middle vertical rod 213 abuts against the middle limiting plate 242. At this time, all vertical rods are upright, completing the unfolding of the handrail 21.

[0095] When the telescopic rod 233 drives the connecting piece 22 to rotate, the connecting piece 22 has a relief surface and an inclined surface, so that the telescopic rod 233 can extend and retract smoothly, and the connecting piece 22 can rotate smoothly.

[0096] The handrail device in this embodiment includes a handrail, a connector, and a drive mechanism. The drive mechanism includes a cylinder, a telescopic rod, and a drive component. The telescopic rod connects to the connector, driving the connector and the handrail to rotate. The pneumatic operating component of the drive component is located at the bottom of the tank, allowing operation from the ground to unfold or retract the handrail. Furthermore, this drive mechanism uses pneumatics to unfold or retract the handrail, making the process easier and more convenient.

[0097] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A handrail device for a storage and transportation equipment, the storage and transportation equipment comprising a tank, the handrail device being disposed on at least one side of the top of the tank, characterized in that, The handrail device includes: The handrail includes a horizontal bar and a plurality of spaced vertical bars; the horizontal bar extends longitudinally; the top end of each vertical bar is rotatably connected to the horizontal bar, and the bottom end is rotatably connected to the top of the tank body; The connector includes a first connecting portion and a second connecting portion arranged parallel to each other in the transverse direction; the first connecting portion has a receiving space to receive the lower part of one of the vertical rods; the second connecting portion is located outside the first connecting portion; The driving mechanism includes a cylinder, a telescopic rod that is retractable relative to the cylinder, and a driving component connected to the cylinder to drive the telescopic rod to extend and retract. The driving component includes a pneumatic operating component disposed at the bottom of the tank body. The cylinder is fixed to the top of the tank body, and the telescopic end of the telescopic rod is rotatably connected to the second connecting part. The second connecting part has an inclined surface. When the vertical rod is upright, the inclined surface is inclined upward in a direction away from the telescopic rod. When the telescopic rod is extended or retracted, it drives the connecting part and the vertical rod to rotate, so that the vertical rod rotates upward to be erected or rotates downward to be retracted. The bottom end of the vertical rod has a pivot point, which is rotatably connected to the frame or walkway of the storage and transportation equipment; the second connecting part has a connection point, which is used to connect to the telescopic rod of the drive mechanism; when the handrail is retracted, the connection point is higher than the pivot point, and the pivot point is not collinear with the axis of the telescopic rod.

2. The handrail device according to claim 1, characterized in that, The first connecting part and the second connecting part are connected by a transition part, the transition part extends vertically and has a relief surface, the relief surface slopes downward from the inside to the outside, and the transition part is connected to the end of the second connecting part near the telescopic rod; The telescopic end of the telescopic rod is connected to the end of the second connecting part away from the telescopic rod.

3. The handrail device according to claim 1, characterized in that, The first connecting portion has an opening that faces inward.

4. The handrail device according to claim 1, characterized in that, The vertical rod includes end vertical rods located at both ends, and a middle vertical rod located between the two end vertical rods; The first connecting part is fixedly connected to one of the central vertical rods.

5. The handrail device according to claim 1, characterized in that, The cylinder is mounted on the top of the tank via a mounting base; the mounting base includes: The first mounting plate extends horizontally, fits against the bottom of the walkway of the storage and transportation equipment, and connects to the walkway; The second mounting plate extends vertically, fits against the outside of the walkway, and connects to the walkway; An intermediate plate connects the first mounting plate and the second mounting plate, and the intermediate plate has a mounting portion protruding from the second mounting plate, the mounting portion extending vertically for rotatable connection with the cylinder.

6. The handrail device according to claim 1, characterized in that, The handrail also includes a telescopic rod; the telescopic rod is located at the front end of the horizontal rod, and when the handrail is unfolded, the telescopic rod can extend or retract relative to the horizontal rod.

7. The handrail according to claim 1, characterized in that, The driving component includes: An air supply pipe is connected to the chamber of the cylinder and is used to supply air to the cylinder; The pneumatic operating component is located at the rear end of the tank to control the connection and disconnection between the cylinder and the air source.

8. The handrail device according to claim 7, characterized in that, The drive unit also includes an oil-water separator disposed upstream of the cylinder; The drive unit also includes a flow regulating valve disposed at the bottom of the rear end of the tank body, the flow regulating valve being disposed upstream of the cylinder; The drive unit also includes a reversing valve disposed on the pneumatic operating unit to reverse the air source.

9. The handrail device according to claim 1, characterized in that, The handrail device also includes a limiting plate corresponding to each of the vertical bars, so as to limit the vertical bars in the upright state to maintain the unfolded state of the handrail. The handrail device further includes at least one support frame; each support frame includes a transition plate and a support plate, the transition plate being fixed to the top of the tank, and the support plate extending horizontally to support the horizontal bar when the horizontal bar is rotated downwards to a horizontal position.

10. A storage and transportation device, characterized in that, The device includes a tank body and a handrail device as described in any one of claims 1 to 9, wherein the top of the tank body is provided with a walkway and / or a top side beam, and the vertical bar is connected to the walkway or the top side beam.

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