Safety railing of the hatch coaming

Abstract

The present invention discloses a safety railing for a hatch coaming, which relates to the field of shipbuilding technology. The hatch coaming includes a hatch coaming panel and stiffeners. The hatch coaming panel is disposed above the deck, and the stiffeners are located on the lower side of the hatch coaming panel. The safety railing includes a fixing device, a vertical rod device and a cross bar. There are at least two fixing devices, and the number of the vertical rod devices corresponds to that of the fixing devices. The fixing device includes a first limiting member, a tightening bolt and a second limiting member. The first limiting member is provided with a pressing groove for inserting the stiffener and horizontally limiting the pressing groove. The first limiting member is provided with a threaded hole communicating with the pressing groove. The tightening bolt is matched with the threaded hole and is used for pressing the stiffener. The present invention overcomes the defects in the prior art that welding feet are formed during the welding of the safety railing of the hatch coaming, damaging the steel base material.

Description

Technical Field

[0001] The present invention relates to the field of shipbuilding technology, and particularly to a safety railing for a hatch coaming. Background Art

[0002] Large ships, including bulk carriers, ore carriers, container ships, etc., all have cargo holds, and hatch coamings are installed on the deck. A hatch coaming refers to the steel plate perpendicular to the ship's deck and surrounding the hatch, and its function is to prevent water from entering the cargo hold and reduce the probability of deck workers falling from the open hatch.

[0003] During the installation process of the hatch coaming, a large amount of work is carried out at high altitude, which is very dangerous. Welding safety uprights and erecting railings on the top plate of the hatch coaming is a common safety prevention measure. For example, the steel plate material of the hatch coaming of container ships and other ships is high-strength steel. On the one hand, welding will generate a large number of weld beads that need to be processed, and on the other hand, it is very easy to generate welding cracks, resulting in damage to the steel base material and causing losses such as plate replacement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of forming weld beads and damaging the steel base material during the welding of the safety fence of the hatch coaming in the prior art, and to provide a safety railing for the hatch coaming.

[0005] The present invention solves the above technical problem through the following technical solutions:

[0006] The present invention provides a safety railing for a hatch coaming. The hatch coaming includes a hatch coaming panel and a stiffener. The hatch coaming panel is arranged above the deck, and the stiffener is located below the hatch coaming panel. The safety railing includes a fixing device, an upright device, and a crossbar. There are at least two fixing devices, and the number of the upright devices corresponds to that of the fixing devices;

[0007] The fixing device includes a first limiting member, a tightening bolt, and a second limiting member. The first limiting member is provided with a pressing groove for inserting the stiffener and horizontally limiting the pressing groove. The first limiting member is provided with a threaded hole communicating with the pressing groove; the tightening bolt is matched with the threaded hole and is used to tighten the stiffener. The second limiting member is connected to the first limiting member, and at least part of the second limiting member abuts against and is limited to the upper side of the hatch coaming panel. The upright device includes an upright, and the upright is vertically connected to the part of the second limiting member above the hatch coaming panel. The crossbar is connected between at least two uprights.

[0008] In this solution, the safety railing includes a fixing device, a vertical rod device, and a horizontal rod. The fixing device is detachably arranged on the hatch coaming panel through a first limiting member, a second limiting member, and a tightening bolt. The vertical rod device is vertically connected to the fixing device, and the horizontal rod is horizontally connected to the vertical rod, thereby forming an enclosed railing structure. Among them, the pressing groove of the first limiting member can allow the reinforcing rib to be inserted, so that the reinforcing rib limits the first limiting member in the horizontal direction. The second limiting member is connected to the first limiting member, and a part of the second limiting member abuts and is limited to the upper side of the hatch coaming panel, so that the tightening bolt can abut against the reinforcing rib. The tightening bolt is screwed into the pressing groove from the threaded hole to abut against the reinforcing rib, so that the first limiting member and the reinforcing rib are relatively fixed, and thus the fixing device is fixed at the hatch coaming. Thus, the setting of the safety railing of the hatch coaming is realized. The safety railing is convenient to disassemble and assemble, has reliable connection, and does not require welding, avoiding the treatment of weld beads and damage to the steel base material during welding.

[0009] Preferably, the second limiting member includes a transverse arm and a connecting arm. The transverse arm is located above the hatch coaming panel and is used to abut against and be limited to the upper surface of the hatch coaming panel. The connecting arm is connected between the transverse arm and the first limiting member, and the vertical rod is connected to the transverse arm.

[0010] In this solution, the transverse arm is connected to the vertical rod, and the transverse arm abuts against and is limited to the hatch coaming panel, so that the load of the safety railing is transmitted to the hatch coaming panel through the transverse arm. The connecting arm is connected between the transverse arm and the first limiting member, so that the whole fixing device is limited to the hatch coaming panel and the reinforcing rib, facilitating the fixing of the fixing device to the hatch coaming.

[0011] Preferably, a relief notch is provided on the transverse arm, and the opening of the relief notch faces the first limiting member.

[0012] In this solution, the relief notch provided on the transverse arm increases the space between the transverse arm and the first limiting member, facilitating the insertion of the reinforcing rib into the limiting groove while keeping the transverse arm in contact with the hatch coaming panel, thus facilitating the installation of the whole fixing device to the hatch coaming.

[0013] Preferably, the second limiting member further includes a connecting sleeve and a fixing pin. The connecting sleeve is vertically fixed to the connecting arm, the vertical rod is matched with the connecting sleeve, a first pin hole is provided on the circumferential side of the connecting sleeve, a second pin hole is provided on the circumferential side of the vertical rod, the first pin hole and the second pin hole are aligned with each other, and the fixing pin can be inserted through the first pin hole and the second pin hole at the same time.

[0014] In this solution, the connecting sleeve is vertically fixed to the connecting arm. When the vertical rod device is connected to the fixing device, the vertical rod is inserted into the connecting sleeve. The vertical rod is rotated to align the first pin hole and the second pin hole, and the vertical rod and the connecting sleeve are fixed by inserting a fixing pin into the first pin hole and the second pin hole. Thus, the fixing device and the vertical rod device are connected in a pluggable manner, facilitating the installation of the vertical rod.

[0015] Preferably, the vertical rod device further includes a locking mechanism. The locking mechanism is arranged on the vertical rod. The locking mechanism includes a mounting member and a locking pin. The mounting member is fixed to the vertical rod, and a locking slot for the cross bar to pass through is provided on the mounting member. A locking pin hole communicating with the locking slot is formed on the mounting member, and the locking pin can pass through the locking pin hole to close the opening of the locking slot.

[0016] In this solution, the locking mechanism is arranged on the vertical rod for carrying and locking the cross bar. When installing the cross bar, the cross bar is locked by the locking mechanisms of at least two vertical rod devices. Specifically, the cross bar can be inserted into the locking slot on the mounting member from the notch of the locking slot. After the cross bar is placed, the locking pin passes through the locking pin hole and closes the opening of the locking slot, thereby realizing the installation of the cross bar. This installation method is convenient for disassembly, and the cross bar and the vertical rod device can be reused, saving costs.

[0017] Preferably, the number of the locking pin holes is two, which are respectively defined as a first locking pin hole and a second locking pin hole. The first locking pin hole and the second locking pin hole are respectively located on opposite sides of the locking slot. The locking pin includes a pin plate, and the width of the pin plate gradually increases along the opening direction of the locking slot. The wider end of the pin plate is inserted into the first locking pin hole, and the narrower end of the pin plate is inserted into the second locking pin hole.

[0018] In this solution, along the opening direction of the locking slot, the width of the pin plate gradually increases, that is, the pin plate is in a gradually expanding shape. The wider end of the pin plate is inserted into the first locking pin hole, and the narrower end of the pin plate is inserted into the second locking pin hole. As the pin plate is continuously inserted, the area of the part surrounded by the locking slot and the pin plate gradually decreases, so that the pin plate presses against the cross bar, fixing the cross bar in the locking slot. Thus, through the cooperation of the pin plate and the locking slot, it is convenient for the disassembly and assembly of the cross bar and the vertical rod device.

[0019] Preferably, the locking pin further includes a first limiting block and a second limiting block. The first limiting block is located at the wider end of the pin plate and outside the locking slot. Along the thickness direction of the first limiting block, the thickness of the first limiting block is greater than the gap between the pin plate and the first locking pin hole.

[0020] The second limiting block is located at the end with a smaller width of the plug plate and outside the locking groove. Along the thickness direction of the second limiting block, the thickness of the second limiting block is less than the gap between the plug plate and the second locking pin hole and greater than the gap between the plug plate and the first locking pin hole.

[0021] In this solution, the first limiting block is arranged at the end with a larger width of the plug plate and outside the locking groove. The thickness of the first limiting block is greater than the gap between the plug plate and the first locking pin hole in the corresponding direction, so that the plug plate is not easily passed through the first locking pin hole from the end where the first limiting block is located; the second limiting block is arranged at the end with a smaller width of the plug plate and outside the locking groove, that is, the first limiting block and the second limiting block are respectively arranged on the opposite sides of the locking groove. The thickness of the second limiting block is less than the gap between the plug plate and the second locking pin hole, so that when the plug plate is pulled out, the second limiting block and the plug plate can pass through the second locking pin hole to open the opening of the locking groove; at the same time, the thickness of the second limiting block is greater than the gap between the plug plate and the first locking pin hole, so that the plug plate is not easily disengaged from the first locking pin hole when the plug plate is pulled out; thus, through the first limiting block and the second limiting block, the plug plate is limited on the installation member while maintaining mobility, avoiding the loss of the plug plate.

[0022] Preferably, the plug plate is in the shape of a right trapezoid, the straight waist of the plug plate faces the bottom of the locking groove, and the inclined waist of the plug plate faces the opening of the locking groove.

[0023] In this solution, the plug plate is in the shape of a right trapezoid, with less processing difficulty and easy to obtain; the width of the plug plate changes relatively uniformly, which is convenient for controlling the insertion of the plug plate to lock the cross bar; the inclined waist of the plug plate faces the opening of the locking groove, and the straight waist faces the bottom of the locking groove, so that the plug plate abuts against the cross bar through one side of the straight waist, and its force is more stable and the abutment is relatively firm.

[0024] Preferably, the edge on the side of the first locking pin hole away from the bottom of the locking groove and the edge on the side of the second locking pin hole away from the bottom of the locking groove are located in the same vertical plane.

[0025] In this solution, the edge on the side of the first locking pin hole away from the bottom of the locking groove and the edge on the side of the second locking pin hole away from the bottom of the locking groove are located in the same vertical plane, that is, the outer edges of the first locking pin hole and the second locking pin hole are aligned with each other, so that it is convenient for the plug plate to be simultaneously aligned and inserted into the first locking pin hole and the second locking pin hole.

[0026] Preferably, the vertical rod is tubular, and a rain cover for closing the vertical rod is arranged at the top of the vertical rod.

[0027] In this solution, the vertical pole is tubular to reduce the consumption of materials and its own weight, and the rain cover at the top of the vertical pole can prevent rainwater from entering the vertical pole.

[0028] The positive and progressive effects of the present invention are as follows:

[0029] In the present invention, the pressing groove of the first limiting member can accommodate the reinforcing rib, so that the reinforcing rib limits the first limiting member in the horizontal direction. The second limiting member is connected to the first limiting member, and a part of the second limiting member abuts and is limited to the upper side of the hatch coaming panel, so that the tightening bolt can tighten the reinforcing rib. The tightening bolt is screwed into the pressing groove from the threaded hole to tighten the reinforcing rib, making the first limiting member and the reinforcing rib relatively fixed, and thus the fixing device is fixed at the hatch coaming; the vertical pole device is connected to the fixing device, and the cross bar and the vertical pole are connected to each other to form an enclosing structure; thus, the installation of the safety railing at the hatch coaming is realized. The safety railing is convenient to disassemble and assemble, has reliable connection, and does not require welding, avoiding the treatment of weld feet and damage to the steel base material during welding. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the hatch coaming and the safety railing according to an embodiment of the present invention.

[0031] Figure 2 It is a three-dimensional structural diagram of the hatch coaming according to an embodiment of the present invention.

[0032] Figure 3 It is a three-dimensional structural diagram of the fixing device according to an embodiment of the present invention

[0033] Figure 4 It is a three-dimensional structural diagram of the vertical pole device according to an embodiment of the present invention

[0034] Figure 5 It is a three-dimensional structural diagram of the vertical pole device and the cross bar according to an embodiment of the present invention

[0035] Figure 6 It is a three-dimensional structural diagram of the locking mechanism according to an embodiment of the present invention

[0036] Description of the Reference Numerals:

[0037] Hatch coaming 100

[0038] Hatch coaming wall panel 110

[0039] Hatch coaming panel 120

[0040] Reinforcing rib 130

[0041] Safety railing 200

[0042] Fixing device 300

[0043] First limiting member 310

[0044] Pressing groove 311

[0045] Threaded hole 312

[0046] Tightening bolt 320

[0047] Second limiting member 330

[0048] Transverse arm 331

[0049] Connecting arm 332

[0050] Connecting sleeve 333

[0051] Fixed pin 334

[0052] Relieving notch 335

[0053] First pin hole 336

[0054] Second pin hole 337

[0055] Vertical rod device 400

[0056] Vertical rod 410

[0057] Locking mechanism 420

[0058] Mounting member 421

[0059] Locking pin 422

[0060] Locking groove 423

[0061] First locking pin hole 424

[0062] Second locking pin hole 425

[0063] Pin plate 426

[0064] First limiting block 427

[0065] Second limiting block 428

[0066] Rain cover 430

[0067] Cross bar 500

[0068] Clamp 600 Detailed implementation mode

[0069] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the examples hereby.

[0070] This embodiment discloses a safety railing for a hatch coaming. Refer to Figure 1 and Figure 2, the hatch coaming 100 includes a hatch coaming wall panel 110, a hatch coaming panel 120, and a reinforcing rib 130. The hatch coaming wall panel 110 is vertically disposed on the deck 600 at the hatch opening, and a plurality of hatch coaming wall panels 110 enclose to form a rectangular enclosure structure. The hatch coaming panel 120 is fixedly connected to the upper side of the hatch coaming wall panel 110 and is disposed parallel to the deck 600. The reinforcing rib 130 is connected to the lower side of the hatch coaming panel 120 to enhance the structural strength of the hatch coaming panel 120. Among them, the length direction of the reinforcing rib 130 is parallel to the length direction of the hatch coaming panel 120.

[0071] The safety railing 200 is disposed on the hatch coaming panel 120 to play a protective role. Refer to Figures 1 to 5 , the safety railing 200 includes a fixing device 300, a vertical rod device 400, and a cross bar 500. There are at least two fixing devices 300, and the number of the vertical rod devices 400 corresponds to the number of the fixing devices 300. The fixing device 300 is detachably installed on the hatch coaming panel 120, the vertical rod device 400 is vertically connected to the fixing device 300, and the cross bar 500 is horizontally connected between two adjacent vertical rod devices 400. Thus, the cross bar 500 is supported by the fixing device 300 and the vertical rod device 400, and a plurality of cross bars 500 are connected end to end to form an enclosure structure around the hatch opening.

[0072] Refer to Figure 2 and Figure 3 , the fixing device 300 includes a first limiting member 310, a tightening bolt 320, and a second limiting member 330. The first limiting member 310 is disposed below the hatch coaming panel 120. The second limiting member 330 is connected to the first limiting member 310, and at least part of the second limiting member 330 abuts against and is limited to the upper side of the hatch coaming panel 120. The tightening bolt 320 passes through the first limiting member 310 and is used to fix the first limiting member 310 and the reinforcing rib.

[0073] A pressing groove 311 is formed on the upper side of the first limiting member 310. The pressing groove 311 penetrates through the opposite sides of the first limiting member 310 in the horizontal direction, and the opening of the pressing groove 311 faces the lower surface of the hatch coaming panel 120. The pressing groove 311 is used for the reinforcing rib 130 to be inserted, so that the reinforcing rib 130 is horizontally limited and pressed in the pressing groove 311. Among them, the width of the pressing groove 311 is greater than the thickness of the reinforcing rib 130 to facilitate the insertion of the reinforcing rib 130 into the pressing groove 311.

[0074] The first limiting member 310 is provided with a threaded hole 312 communicating with the pressing groove 311; the abutting bolt 320 is matched with the threaded hole 312 and is used for abutting against the reinforcing rib 130. Among them, the threaded hole 312 can be opened on two sides and / or one bottom surface of the pressing groove 311. In this embodiment, the number of the threaded holes 312 is two, and the two threaded holes 312 are both horizontally arranged on the side surface of the pressing groove 311. The number of the abutting bolts 320 is two, and the two abutting bolts 320 are horizontally screwed into the threaded holes 312 and abut against the reinforcing rib 130, so that the reinforcing rib 130 limits the first limiting member 310 in the horizontal direction, making the first limiting member 310 and the reinforcing rib 130 relatively fixed, and thus the fixing device 300 is fixed at the hatch coaming 100. Thereby, the safety railing 200 of the hatch coaming 100 is set up. The safety railing 200 is convenient to disassemble and assemble, has reliable connection, and does not require welding, avoiding the treatment of weld beads and the damage to the steel base material during welding.

[0075] The second limiting member 330 is connected to the first limiting member 310, and a part of the second limiting member 330 abuts and limits on the upper side of the hatch coaming panel 120. Specifically, in this embodiment, the second limiting member 330 includes a transverse arm 331, a connecting arm 332, a connecting sleeve 333 and a fixing pin 334. The transverse arm 331 is located above the hatch coaming panel 120, and the transverse arm 331 abuts and limits on the upper surface of the hatch coaming panel 120, so that the load of the safety railing 200 is transmitted to the hatch coaming panel 120 through the transverse arm 331. The connecting arm 332 is connected between the transverse arm 331 and the first limiting member 310, that is, the transverse arm 331 and the connecting arm 332 form an L-shaped member. The connecting sleeve 333 is vertically connected to the transverse arm 331. Thus, the whole fixing device 300 is limited between the hatch coaming panel 120 and the reinforcing rib 130, which is convenient for the fixing device 300 to be fixed on the hatch coaming 100.

[0076] Among them, a relief notch 335 is provided on the transverse arm 331, and the opening of the relief notch 335 faces the first limiting member 310. The relief notch 335 increases the space between the transverse arm 331 and the first limiting member 310, which is convenient for the reinforcing rib 130 to be inserted into the pressing groove 311 while keeping the transverse arm 331 in contact with the hatch coaming panel 120, so as to facilitate the installation of the whole fixing device 300 on the hatch coaming 100.

[0077] Referring to Figure 4 , the vertical rod device 400 includes a vertical rod 410 and a locking mechanism 420. The locking mechanism 420 is arranged on the vertical rod 410 and is used for carrying and locking the cross bar 500. The vertical rod 410 is vertically connected to the second limiting member 330.

[0078] Specifically, the connecting sleeve 333 is vertically fixed to one end of the transverse arm 331 away from the connecting arm 332. The vertical rod 410 is matched with the connecting sleeve 333, that is, the vertical rod 410 can be inserted into the connecting sleeve 333 and limited within the connecting sleeve 333. Preferably, the vertical rod 410 and the connecting sleeve 333 are in interference fit. A first pin hole 336 is formed on the circumferential side of the connecting sleeve 333, and a second pin hole 337 is formed on the circumferential side of the vertical rod 410. The first pin hole 336 and the second pin hole 337 are aligned, and the fixing pin 334 can pass through the first pin hole 336 and the second pin hole 337 simultaneously.

[0079] Thus, when the vertical rod device 400 is connected to the fixing device 300, the vertical rod 410 is inserted into the connecting sleeve 333. The vertical rod 410 is rotated to align the first pin hole 336 and the second pin hole 337, and the fixing pin 334 is inserted into the first pin hole 336 and the second pin hole 337 to fix the vertical rod 410 and the connecting sleeve 333, realizing the pluggable connection between the fixing device 300 and the vertical rod device 400, which facilitates the installation of the vertical rod 410.

[0080] In this embodiment, both the vertical rod 410 and the cross bar 500 are tubular members, which can be specifically made of round steel pipes, thereby reducing the consumables and self-weight of the vertical rod 410 and the cross bar 500. Among them, a rain cover 430 for closing the vertical rod 410 is provided at the top of the vertical rod 410 to prevent rainwater from entering the vertical rod 410.

[0081] Refer to Figures 4 to 6 , the locking mechanism 420 includes a mounting member 421 and a locking pin 422. The mounting member 421 is fixed to the vertical rod 410, and a locking groove 423 for the cross bar 500 to pass through is provided on the mounting member 421; a locking pin hole communicating with the locking groove 423 is formed on the mounting member 421, and the locking pin 422 can pass through the locking pin hole to close the opening of the locking groove 423.

[0082] When installing the cross bar 500, the cross bar 500 is locked by the locking mechanisms 420 of at least two vertical rod devices 400. Specifically, the cross bar 500 can be inserted into the locking groove 423 on the mounting member 421 from the notch of the locking groove 423. After the cross bar 500 is placed, the locking pin 422 passes through the locking pin hole and closes the opening of the locking groove 423, thereby realizing the installation of the cross bar 500. This installation method is convenient for disassembly, and the cross bar 500 and the vertical rod device 400 can be reused, saving costs.

[0083] Among them, the installation member 421 is a C-shaped member. Its vertical side is welded to the vertical rod 410, and its opening faces horizontally away from the vertical rod 410. The number of locking pin holes is two, which are respectively defined as the first locking pin hole 424 and the second locking pin hole 425. The first locking pin hole 424 and the second locking pin hole 425 are respectively located on opposite sides of the locking groove 423; in this embodiment, the first locking pin hole 424 is arranged on the upper side plate of the installation member 421, and the second locking pin hole 425 is arranged on the lower side plate of the installation member 421.

[0084] The locking bolt 422 includes a bolt plate 426, a first limiting block 427 and a second limiting block 428. The width of the bolt plate 426 gradually increases along the opening direction of the locking groove 423 (the direction indicated by the arrow in the figure), that is, the bolt plate 426 is in a gradually expanding shape. The wider end of the bolt plate 426 passes through the first locking pin hole 424, and the narrower end of the bolt plate 426 passes through the second locking pin hole 425.

[0085] Thus, as the bolt plate 426 is continuously inserted, the area of the part surrounded by the locking groove 423 and the bolt plate 426 gradually decreases, so that the bolt plate 426 presses against the cross bar 500, making the cross bar 500 fixed in the locking groove 423; through the cooperation of the bolt plate 426 and the locking groove 423, it is convenient for the disassembly and assembly of the cross bar 500 and the vertical rod device 400.

[0086] The first limiting block 427 is located at the wider end of the bolt plate 426 and outside the locking groove 423; along the thickness direction of the first limiting block 427, the thickness of the first limiting block 427 is greater than the gap between the bolt plate 426 and the first locking pin hole 424, so that the bolt plate 426 is not easily passed through the first locking pin hole 424 from the end where the first limiting block 427 is located.

[0087] The second limiting block 428 is located at the narrower end of the bolt plate 426 and outside the locking groove 423, that is, the first limiting block 427 and the second limiting block 428 are respectively arranged on opposite sides of the locking groove 423. Along the thickness direction of the second limiting block 428, the thickness of the second limiting block 428 is less than the gap between the bolt plate 426 and the second locking pin hole 425 and greater than the gap between the bolt plate 426 and the first locking pin hole 424. Thus, when the bolt plate 426 is pulled out, the second limiting block 428 and the bolt plate 426 can pass through the second locking pin hole 425 to open the opening of the locking groove 423; at the same time, the thickness of the second limiting block 428 is greater than the gap between the bolt plate 426 and the first locking pin hole 424, so that the bolt plate 426 is not easily disengaged from the first locking pin hole 424 when the bolt plate 426 is pulled out; thus, through the first limiting block 427 and the second limiting block 428, the bolt plate 426 is limited on the installation member 421 while maintaining its mobility, avoiding the loss of the bolt plate 426.

[0088] Among them, one side edge of the first locking pin hole 424 away from the bottom of the locking groove 423 and one side edge of the second locking pin hole 425 away from the bottom of the locking groove 423 are located in the same vertical plane, that is, the outer side edge of the first locking pin hole 424 is aligned with the outer side edge of the second locking pin hole 425, so that it is convenient for the pin plate 426 to be simultaneously aligned and inserted into the first locking pin hole 424 and the second locking pin hole 425.

[0089] The shape of the pin plate 426 can be a shape with a gradually increasing width such as a sector, a triangle, a trapezoid, etc. In this embodiment, the pin plate 426 is in the shape of a right trapezoid, and the processing difficulty of the pin plate 426 is small and it is easy to obtain. The straight waist of the pin plate 426 faces the bottom of the locking groove 423, and the inclined waist of the pin plate 426 faces the opening of the locking groove 423, so that the pin plate 426 abuts against the cross bar 500 through one side of the straight waist, and its force is more stable and the abutment is relatively firm.

[0090] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A safety railing for a hatch coaming, the hatch coaming comprising a hatch coaming panel and stiffeners, the hatch coaming panel being disposed above the deck, and the stiffeners being located on the lower side of the hatch coaming panel, characterized in that, The safety railing comprises a fixing device, a vertical rod device and a cross bar, wherein at least two fixing devices are provided, and the number of the vertical rod devices corresponds to the number of the fixing devices; The fixing device comprises a first limiting member, a clamping bolt and a second limiting member, the first limiting member is provided with a clamping groove, the clamping groove is used for the reinforcing rib to be inserted into and horizontally limit the clamping groove, the first limiting member is provided with a threaded hole communicating with the clamping groove; the clamping bolt cooperates with the threaded hole and is used to clamp the reinforcing rib, the second limiting member is connected to the first limiting member, and at least a portion of the second limiting member abuts and is limited to the upper side of the hatch coaming panel, the vertical rod device comprises a vertical rod, the vertical rod is vertically connected to the portion of the second limiting member located above the hatch coaming panel, and the cross bar is connected between at least two of the vertical rods; The second limiting member comprises a transverse arm and a connecting arm, wherein the transverse arm is located above the hatch coaming panel and is used to abut against and be limited to the upper surface of the hatch coaming panel, the connecting arm is connected between the transverse arm and the first limiting member, and the vertical rod is connected to the transverse arm; The second limiting member also includes a connecting sleeve and a fixing pin. The connecting sleeve is vertically fixed to the connecting arm. The vertical rod cooperates with the connecting sleeve. A first plug hole is opened on the peripheral side of the connecting sleeve. A second plug hole is opened on the peripheral side of the vertical rod. The first plug hole is aligned with the second plug hole. The fixing pin can be inserted into the first plug hole and the second plug hole at the same time.

2. The safety railing of the hatch coaming according to claim 1, characterized in that, The transverse arm is provided with a clearance gap, and the opening of the clearance gap faces the first limiting member.

3. The safety railing of the hatch coaming according to claim 1, characterized in that, The vertical pole device also includes a locking mechanism, which is arranged on the vertical pole. The locking mechanism includes a mounting component and a locking pin. The mounting component is fixed to the vertical pole, and the mounting component is provided with a locking groove for the cross bar to pass through; the mounting component is provided with a locking pin hole connected to the locking groove, and the locking pin can pass through the locking pin hole to close the opening of the locking groove.

4. The safety railing of the hatch coaming according to claim 3, characterized in that, The number of the locking pin holes is two, which are defined as a first locking pin hole and a second locking pin hole, respectively. The first locking pin hole and the second locking pin hole are respectively located on opposite sides of the locking groove; the locking latch includes a latch plate, the width of the latch plate gradually increases along the opening direction of the locking groove, the end of the latch plate with a larger width is inserted into the first locking pin hole, and the end of the latch plate with a smaller width is inserted into the second locking pin hole.

5. The safety railing of the hatch coaming according to claim 4, characterized in that, The locking latch further comprises a first limit block and a second limit block, wherein the first limit block is located at an end of the latch plate with a larger width and outside the locking groove; along the thickness direction of the first limit block, the thickness of the first limit block is greater than the gap between the latch plate and the first locking pin hole; The second limiting block is located at the end with a smaller width of the plug plate and outside the locking groove. Along the thickness direction of the second limiting block, the thickness of the second limiting block is less than the gap between the plug plate and the second locking pin hole and greater than the gap between the plug plate and the first locking pin hole.

6. The safety railing of the hatch coaming according to claim 4, characterized in that, The plug plate is in the shape of a right trapezoid, the straight waist of the plug plate faces the bottom of the locking groove, and the oblique waist of the plug plate faces the opening of the locking groove.

7. The safety railing of the hatch coaming according to claim 4, characterized in that, One side edge of the first locking pin hole away from the bottom of the locking groove and one side edge of the second locking pin hole away from the bottom of the locking groove are located in the same vertical plane.

8. The safety railing of the hatch coaming according to claim 1, characterized in that, The vertical rod is tubular, and a rain cover for closing the vertical rod is provided at the top of the vertical rod.

Images