Ladder for grating

Abstract

The present invention relates to a ladder for gratings that can be used in a stable state without tipping over on gratings widely used in industrial sites, plants, power plants, etc. The features of the present invention include a ladder member (100) comprising a plurality of standing side bars (110) and ladder steps (120) formed spaced apart at a certain interval between the side bars (110), a support member (200) connected to the lower part of the ladder member (100) and supported by a grating (10), and a catch member (300) provided on the support member (200) and protruding downward so as to be inserted into the grating (10) and caught.

Description

Technology Field

[0001] The present invention relates to a ladder for gratings that can be used in a stable state without tipping over on gratings widely used in industrial sites, plants, power plants, etc. Background Technology

[0002] Generally, a ladder is a device consisting of multiple steps mounted between two long pole-shaped supports, installed in places where stairs or elevators are not installed, and providing a passageway for ascending to upper floors or high positions.

[0003] These ladders are widely used in industrial sites, plants, power plants, and construction sites, and are positioned at an angle between the ground where a worker is located and the upper floor, allowing the worker to move to the upper floor by stepping on the platforms mounted vertically one by one.

[0004] In addition, due to the characteristics of plant facilities, gratings are widely used on floors and stairs at power plants.

[0005] In this case, a ladder must inevitably be used to inspect plant facilities in the event of an emergency.

[0006] However, there was a problem where safety accidents could occur during the process of using a ladder on the grating, as the ladder could slip on the grating or its supports could fall out, causing the ladder to tip over.

[0007] Therefore, there is a need for the development of a device that allows ladders to be used safely on gratings.

[0008] The background technology of the present invention is registered with the Korean Intellectual Property Office as Utility Model Publication No. 20-0314017 on May 9, 2003. The problem to be solved

[0009] The problem that the present invention aims to solve is to provide a grating ladder that can be used in a stable state without tipping over on gratings widely used in industrial sites, plants, power plants, etc. means of solving the problem

[0010] A ladder for grating according to one embodiment of the present invention is characterized by comprising a ladder member (100) consisting of a plurality of standing side bars (110) and ladder steps (120) formed at a certain interval between the side bars (110), a support member (200) connected to the lower part of the ladder member (100) and supported by the grating (10), and a catch member (300) provided on the support member (200) and protruding downward and inserted into the grating (10) to catch.

[0011] Preferably, the support member (200) is characterized by including a base frame (210) supported on the upper part of the grating (10) and a receiving block (220) formed in the middle of the base frame (210) and having a receiving space (221) that is open upward to accommodate the lower end of the side bar (110).

[0012] Preferably, the base frame (210) is composed of a square or circular plate and is characterized by being formed with a width greater than the width of the hole formed in the grating (10).

[0013] Preferably, the receiving space (221) of the receiving block (220) is formed with a width 1.5 to 2 times greater than the thickness of the side bar (110).

[0014] Preferably, the base frame (210) has communication holes (211) formed so as to be distributed on the outside, and the locking member (300) is formed so as to be distributed on the base frame (210) of the support member (200), and a sliding space that is open vertically is connected to the communication holes (211) of the base frame (210), and a lifting hole (311) is formed that is connected to the sliding space extending from the upper part to the lower part of one side, and an upper hole (312) is formed on the upper part of the other side that is connected to the sliding space, and a communication hole (313) is formed on the upper part of the lifting hole (311) that is connected to the upper hole (312), and a locking pipe body (310) that slides in the sliding space of the locking pipe body (310), protrudes downward through the communication holes (211) of the base frame (210), and is inserted into a hole formed in the grating (10) to be locked, and a locking shaft (320) that slides in the sliding space of the locking pipe body (310), protrudes downward through the communication holes (211) of the base frame (210), and is inserted into a hole formed in the grating (10) to be locked. It is characterized by including a fixing pin (330) that is formed to protrude laterally from the locking shaft (320) and moves to one side of the locking tube body (310) through the communication hole (313) of the locking tube body (310) to be caught in the lifting hole (311) of the locking tube body (310), or moves to the other side of the locking tube body (310) through the communication hole (313) to be caught in the upper hole (312) and fixed.

[0015] Preferably, the locking shaft (320) is characterized by having an upper screw tab (321) formed on the upper side, and the fixing pin (330) is composed of a bolt that is coupled to the upper screw tab (321) of the locking shaft (320).

[0016] Preferably, the locking member (300) includes a locking fixing part (350) that maintains the locking shaft (320) in a raised or lowered state in the locking tube body (310), the locking tube body (310) is formed with a lower hole (314) that extends laterally from the lower part of the lifting hole (311) to which a fixing pin (330) is caught, the locking shaft (320) has a male screw thread formed thereon, and the locking fixing part (350) is composed of a nut that is screw-coupled to the male screw thread of the locking shaft (320). Effects of the invention

[0017] The present invention can be used in a stable state without tipping over on gratings widely used in industrial sites, plants, power plants, etc. Brief explanation of the drawing

[0018] FIG. 1 is a drawing showing a ladder for grating according to an embodiment of the present invention. FIG. 2 is a perspective view showing the ladder member, support member, and locking member of the present invention in a separated state. FIG. 3 is a perspective view showing the combined state of the ladder member, support member, and locking member of the present invention. FIG. 4 is a perspective view showing the state in which the support member of the present invention is supported on the ground. FIG. 5 is a perspective view showing a state in which a locking member protruding from a support member of the present invention is caught on a grating. FIG. 6 is a drawing showing the essential parts of the present invention. Specific details for implementing the invention

[0019] Hereinafter, a ladder for grating according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[0020] As illustrated in FIGS. 1 to 6, the present invention comprises a ladder member (100) consisting of a plurality of standing side bars (110) and ladder steps (120) formed at regular intervals between the side bars (110), a support member (200) connected to the lower part of the ladder member (100) and supported by a grating (10), and a catch member (300) provided on the support member (200) and protruding downward so as to be inserted into the grating (10) and caught.

[0021] Grating (10) is widely used in industrial sites, plants, power plants, etc., and is formed in a grid shape with multiple through holes. This grating (10) is made of metal and is installed on floors or stairs, etc., while providing a sturdy structure. Here, when the grating (10) is installed on the floor, the lower part of the floor is exposed to the outside, so a worker can visually inspect and check it, and drainage and ventilation can be easily achieved.

[0022] The ladder member (100) can be used in a straight shape or with the middle part bent to form an A shape, with both ends supported on the ground. That is, with the side bar (110) supported on the ground, a worker can step on the ladder step (120) to go up and down.

[0023] The support member (200) includes a base frame (210) supported on the upper part of the grating (10) and a receiving block (220) formed in the middle of the base frame (210) and having a receiving space (221) that is open upward to accommodate the lower end of the side bar (110).

[0024] The base frame (210) is composed of a square or circular plate and is formed with a width greater than the width of the hole formed in the grating (10). That is, the base frame (210) is supported on the upper part of the grating (10) without falling into the through hole of the grating (10).

[0025] And communication holes (211) are formed on the base frame (210) so as to be distributed on the outside. In addition, a non-slip surface (not shown), such as a rubber pad, may be formed on the base frame (210) to prevent slipping while it is supported on the floor.

[0026] The receiving space (221) of the receiving block (220) is formed with a width 1.5 to 2 times greater than the thickness of the side bar (110). Thus, the side bar (110) of the ladder member (100) can be inserted into and supported in the receiving space (221) of the receiving block (220). Of course, the side bar (110) of the ladder member (100) inserted into the receiving space (221) of the receiving block (220) can be separated.

[0027] Here, the sidebar (110) may have holes formed that penetrate from the bottom to both sides.

[0028] And the receiving block (220) may have holes formed on both sides that penetrate outward from the receiving space (221). The holes of the receiving block (220) are connected to the holes of the side bar (110). Additionally, a hinge pin (222) is fixed by penetrating the holes of the receiving block (220) and the side bar (110).

[0029] Therefore, the side bar (110) can be supported in the receiving block (220) while rotated at a certain angle. In addition, the receiving block (220) can be carried and stored in a state where it is rotatably connected to the side bar (110).

[0030] A locking member (300) is formed so as to be distributed on the base frame (210) of the support member (200), and has a sliding space that opens vertically and is connected to the communication hole (211) of the base frame (210), a lifting hole (311) that is connected to the sliding space extending from the upper to the lower side of one side, an upper hole (312) that is connected to the sliding space is formed on the upper side of the other side, and a communication hole (313) that is connected to the upper hole (312) is formed from the upper side of the lifting hole (311); a locking shaft (320) that slides in the sliding space of the locking shaft (310), protrudes downward through the communication hole (211) of the base frame (210), and is inserted into a hole formed in the grating (10) to be locked, and is formed to protrude sideways from the locking shaft (320) of the locking shaft (310). It includes a fixing pin (330) that moves to one side of the catch body (310) through the communication hole (313) and is caught in the lifting hole (311) of the catch body (310), or moves to the other side of the catch body (310) through the communication hole (313) and is caught in the upper hole (312) to be fixed.

[0031] The catch tube (310) is fixed to the upper part of the base frame (210) by bolts or welding, and the sliding space is connected to the communication hole (211) of the base frame (210).

[0032] The lifting hole (311) is formed to be longer than the upper hole (312).

[0033] The locking shaft (320) has a head resembling a handle formed at the top. That is, the operator can raise or lower or rotate the locking shaft (320) in the locking tube (310) while holding the head.

[0034] And the locking shaft (320) has an upper screw tap (321) formed on the upper side.

[0035] The fixing pin (330) may be composed of a bolt that is coupled to the upper screw tap (321) of the locking shaft (320).

[0036] Therefore, when the operator raises the locking shaft (320) so that the fixing pin (330) engages with the upper hole (312), the locking shaft (320) is maintained in the raised state. That is, the lower end of the locking shaft (320) does not protrude below the base frame (210). In this state, the base frame (210) can be supported on a flat surface for use.

[0037] Then, when the operator lowers the locking shaft (320) so that the fixing pin (330) engages in the lifting hole (311), the locking shaft (320) is maintained in the lowered state. That is, the lower end of the locking shaft (320) protrudes to the lower part of the base frame (210) and is inserted into the hole of the grating (10) to engage. Therefore, the base frame (210) does not slide on the upper part of the grating (10).

[0038] In addition, the catch shafts (320) can be selectively raised or lowered in the grating (10), so that the catch shafts (320) are selectively inserted into the holes of the grating (10) and caught. For example, the ladder (100) can be used by catching only 2 to 3 of the 4 catch shafts (320) in the holes of the grating (10).

[0039] Meanwhile, the locking member (300) includes a locking fixing part (350) that maintains the locking shaft (320) in a raised or lowered state from the locking tube (310).

[0040] And the catch tube (310) extends laterally from the lower part of the lifting hole (311) to form a lower hole (314) into which a fixing pin (330) is caught.

[0041] In addition, the locking shaft (320) has a male screw thread formed on it.

[0042] The locking fixing part (350) consists of a nut that is screw-coupled to the male threads of the locking shaft (320). Therefore, when the locking shaft (320) is raised, the nut, which is the locking fixing part (350), is rotated to be supported on the upper end of the locking tube body (310). At this time, the fixing pin (330) is caught in the communication hole (313), so the raised state of the locking shaft (320) is maintained.

[0043] In addition, the locking shaft (320) is lowered so that the fixing pin (330) engages in the lower hole (314), and the nut, which is the locking fixing part (350), is rotated so that it is supported on the upper end of the locking tube body (310). As a result, the fixing pin (330) engages in the lower hole (314), so the lowered state of the locking shaft (320) is maintained.

[0044] In this way, the raised or lowered state of the locking shaft (320) can be firmly maintained by the locking fixing part (350). As a result, even if an external impact occurs, the lowered locking shaft (320) does not detach from the grating (10).

[0045] As such, the present invention can be used in a stable state without tipping over on gratings widely used in industrial sites, plants, power plants, etc., and can be considered a very useful invention that can be widely used in the field.

[0046] Those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive, and the scope of the present invention is defined by the claims set forth below rather than by the detailed description, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0047] 10 : Grating 100 : Ladder member 110 : Sidebar 120 : Ladder step 200 : Support member 210 : Base frame 211 : Chimney hole 220 : Receiving block 221 : Accommodation space 222 : Hinge pin 300 : Locking member 310 : Locking pipe body 311 : Elevator Hall 312 : Upper Hall 313 : Chimney hole 314 : Lower hole 320 : Locking shaft 321 : Upper screw tap 322 : Lower screw tap 330 : Fixing pin 350 : Locking part

Claims

Claim 1 A ladder member (100) comprising a plurality of standing side bars (110) and ladder steps (120) formed spaced apart at a certain interval between the side bars (110), a support member (200) connected to the lower part of the ladder member (100) and supported by the grating (10), and a catch member (300) provided on the support member (200) and protruding downward so as to be inserted into and caught by the grating (10); the support member (200) includes a base frame (210) supported on the upper part of the grating (10) and a receiving block (220) formed in the middle of the base frame (210) such that a receiving space (221) in which the lower end of the side bar (110) is received is open upward; the base frame (210) has communication holes (211) formed so as to be dispersed on the outside, and the catch member (300) of the support member (200) A locking pipe body (310) having a sliding space formed to be distributed on the base frame (210) and open vertically, which is connected to the communication hole (211) of the base frame (210), a lifting hole (311) that is connected to the sliding space extending from the upper to the lower side of one side, an upper hole (312) that is connected to the sliding space is formed on the upper side of the other side, and a communication hole (313) that is connected to the upper hole (312) from the upper side of the lifting hole (311) is formed; a locking shaft (320) that slides in the sliding space of the locking pipe body (310), protrudes downward through the communication hole (211) of the base frame (210), and is inserted into a hole formed in the grating (10) to be locked, and a locking shaft (320) formed to protrude sideways from the locking shaft (320) and is connected to one side of the locking pipe body (310) through the communication hole (313) of the locking pipe body (310). A ladder for grating, characterized by including a fixing pin (330) that moves to be caught in the lifting hole (311) of the catch body (310) or moves to the other side of the catch body (310) through the connecting hole (313) and is caught in the upper hole (312) to be fixed. Claim 2 delete Claim 3 A ladder for a grating according to claim 1, wherein the base frame (210) is composed of a square or circular plate and is formed with a width greater than the width of the hole formed in the grating (10). Claim 4 A ladder for grating according to claim 1, characterized in that the receiving space (221) of the receiving block (220) is formed with a width 1.5 to 2 times greater than the thickness of the side bar (110). Claim 5 delete Claim 6 A ladder for grating according to claim 1, characterized in that the locking shaft (320) has an upper screw tab (321) formed on the upper side, and the fixing pin (330) is composed of a bolt that is coupled to the upper screw tab (321) of the locking shaft (320). Claim 7 A ladder for grating according to claim 1, wherein the locking member (300) includes a locking fixing part (350) that maintains the locking shaft (320) in a raised or lowered state from the locking tube body (310), the locking tube body (310) has a lower hole (314) formed by extending laterally from the lower part of the lifting hole (311) to which a fixing pin (330) is caught, the locking shaft (320) has a male screw thread formed thereon, and the locking fixing part (350) is composed of a nut that is screw-coupled to the male screw thread of the locking shaft (320).

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