Protective barrier for access door slot

Abstract

According to the protective barrier for the access door groove, a plurality of hinged limiting seats are pre-buried in a foundation on the periphery of the door groove in advance, four barrier plate frames are connected with the hinged limiting seats, and when the protective barrier is in a horizontal state, the barrier plate frames are horizontally located in pit grooves in the periphery of the upper side face of the door groove; when the breast board frame rotates around the hinged limiting base to be in a vertical shape, a protective fence is defined to protect the door groove, the U-shaped pins are connected and fixed in an inserted mode, operation is easy and convenient, safety and reliability are achieved, and space is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gate slot protection, and relates to a maintenance gate slot protection railing. Background Art

[0002] At present, under the requirement of ensuring safety protection, the maintenance gate slot protection railing also needs to be convenient for disassembly and installation during maintenance. Therefore, generally, an assembled and disassembled protection railing is adopted. Although this form of railing can be convenient for disassembly and assembly to a certain extent, it relies on manual labor, takes a long time, and there are many components such as horizontal and vertical rods and bolts and nuts of the railing. After some components are lost, it is easy to cause the railing to be unable to be assembled and discarded. In addition, during the installation and disassembly process of the protection railing, the operators need to be close to the edge of the gate slot, which belongs to edge operation, with high safety protection requirements, requiring special personnel to be responsible, with high safety risks and waste of human resources. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a maintenance gate slot protection railing. Four railing frames are arranged in the pits around the gate slot and connected to the embedded hinge limit seats, and rotate around the hinge limit seats. When in the vertical state, they enclose a protection railing to protect the gate slot, with convenient operation, safety and reliability, and good protection effect.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a maintenance gate slot protection railing, which includes four railing frames symmetrically arranged around the gate slot. A plurality of hinge limit seats are connected to the lower cross bars of each railing frame; the hinge limit seats are fixed around the gate slot. When the four railing frames rotate around the hinge limit seats to be in the vertical state, they enclose a protection railing to protect the gate slot; when the four railing frames rotate around the hinge limit seats to be in the horizontal state, they are located in the pits around the upper side of the gate slot.

[0005] The railing frame is a horizontal frame with a mesh structure, and pipe sleeves are arranged at both ends of the upper cross bar; when the railing frame is in the vertical state, the two pipe sleeves at the corner of every two adjacent railing frames are inserted and connected with a U-shaped pin.

[0006] The hinge limit seat includes a seat body and a limit connecting rod that cooperates with the seat body through a pin shaft; the limit connecting rod is connected to the lower cross bar of the railing frame and can only rotate within a 90° included angle range.

[0007] The seat body includes a horizontal plate vertically connected to a vertical plate. A pin shaft is arranged at the upper end of the vertical plate, and a notch is arranged in the middle of the vertical plate. The limit connecting rod is located in cooperation with the notch and the pin shaft.

[0008] The limit connecting rod includes an L-shaped right-angle rod body composed of a vertical rod and a horizontal rod connected. A shaft sleeve is arranged on the vertical rod to rotate in cooperation with the pin shaft, and the horizontal plate of the seat body restricts the limit connecting rod to rotate within a 90° included angle range.

[0009] The main beneficial effects of the present utility model are as follows:

[0010] Four railing frames are arranged in the pit around the door groove and connected to the pre-embedded hinge limit seat, and rotate around the hinge limit seat. When in the vertical state, they enclose a protective railing to protect the door groove, with convenient operation, safety and reliability, and good protection effect.

[0011] When the four railing frames are in the horizontal state, they are located in the pit and do not occupy space.

[0012] The hinge limit seat restricts the railing frame to rotate only within a 90° angle range, and it will not cause personnel to slide into the door groove during the operation process, ensuring safety and reliability.

[0013] When two adjacent railing frames rotate around the hinge limit seat to the vertical state, two pipe sleeves at the corner of the two railing frames are connected into a whole by inserting a U-shaped pin, and they will not rotate or topple even under the influence of external forces, with simple and convenient operation, safety and reliability.

[0014] After the operator rotates the railing frame from the horizontal state to the vertical state, the horizontal rod of the limit connecting rod abuts against the lower side of the horizontal plate of the seat body, so that the railing frame cannot tilt towards the inner side of the door groove, ensuring the safety of the operator during the operation process and preventing personnel from falling into the door groove during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is a schematic structural diagram of the hinge limit seat of the present utility model.

[0018] Figure 3 is Figure 2 the front view schematic diagram of

[0019] Figure 4 is a schematic structural diagram of the seat body of the present utility model.

[0020] Figure 5 is a schematic structural diagram of the limit connecting rod of the present utility model.

[0021] Figure 6 is a schematic diagram of the connection between the pipe sleeve and the U-shaped pin at the corner of two railing frames of the present utility model.

[0022] Figure 7 is a schematic structural diagram of the U-shaped pin of the present utility model.

[0023] In the figure: gate slot 1; pit slot 11; railing frame 2; lower side horizontal bar 21; upper side horizontal bar 22; pipe sleeve 23; U-shaped pin 24; articulated limit seat 3; seat body 31; vertical plate 311; horizontal plate 312; notch 313; limit connecting rod 32; bushing 321. Specific implementation manner

[0024] As Figures 1 to 7 shown in the figure, a maintenance gate slot protection railing includes four railing frames 2 symmetrically arranged around the gate slot 1. A plurality of articulated limit seats 3 are connected to the lower side horizontal bar 21 of each railing frame 2. The articulated limit seats 3 are fixed around the gate slot 1. When the four railing frames 2 rotate around the articulated limit seats 3 to be vertical, they enclose a protective railing to protect the gate slot 1. When the four railing frames 2 rotate around the articulated limit seats 3 to be horizontal, they are located in the pit slots 11 around the upper side of the gate slot 1. By pre-burying a plurality of articulated limit seats 3 in the foundation along the edge around the gate slot 1 and connecting the four railing frames 2 with the articulated limit seats 3, when in the horizontal state, the railing frames 2 are horizontally located in the pit slots 11 around the upper side of the gate slot 1. When the railing frames 2 rotate around the articulated limit seats 3 to be vertical, they enclose a protective railing to protect the gate slot 1, and are fixed by inserting and connecting with U-shaped pins 24. The operation is simple and convenient, safe and reliable, and saves space.

[0025] In a preferred solution, the railing frame 2 is a horizontal frame with a mesh structure, and pipe sleeves 23 are arranged at both ends of the upper side horizontal bar 22. When the railing frame 2 is vertical, the two pipe sleeves 23 at the corner of every two adjacent railing frames 2 are inserted and connected with the U-shaped pin 24. During production, the railing frame 2 is formed by connecting rod-shaped bodies to form a horizontal mesh structure.

[0026] Preferably, when two adjacent railing frames 2 rotate around the articulated limit seats 3 to be vertical, the two pipe sleeves 23 at the corner of the two railing frames 2 are inserted and connected into a whole by the U-shaped pin 24, and they will not rotate or topple even under the influence of external forces. The operation is simple and convenient, safe and reliable.

[0027] In a preferred solution, the articulated limit seat 3 includes a seat body 31 and a limit connecting rod 32 that is pin-connected with the seat body 31. The limit connecting rod 32 is connected to the lower side horizontal bar 21 of the railing frame 2 and can only rotate within an angle range of 90°. During installation, the seat body 31 of the articulated limit seat 3 is pre-buried in the foundation around the edge of the gate slot 1, and at the same time, it is necessary to ensure that the limit connecting rod 32 can rotate freely without being interfered by the foundation.

[0028] In a preferred embodiment, the seat body 31 includes a horizontal plate 312 that is laterally and perpendicularly connected to a vertical plate 311. A pin shaft is provided at the upper end of the vertical plate 311, and a notch 313 is provided in the middle of the vertical plate 311. The limit connecting rod 32 is engaged with the notch 313 and the pin shaft. During embedding, the vertical plate 311 of the seat body 31 and the inner wall of the door groove 1 are in the same vertical plane, and the horizontal plate 312 and the pit groove 11 surface are in the same horizontal plane. After embedding, it is necessary to ensure that the limit connecting rod 32 can still rotate.

[0029] In a preferred embodiment, the limit connecting rod 32 includes an L-shaped right-angle rod body composed of a horizontal rod connected to a vertical rod. A bushing 321 is provided on the vertical rod for rotational engagement with the pin shaft. The horizontal plate 312 of the seat body 31 restricts the rotation of the limit connecting rod 32 within a 90° angle range. During use, the vertical rod of the limit connecting rod 32 is fixedly connected to the lower crossbar 21 of the railing frame 2. When the operator rotates the railing frame 2 from the horizontal state to the vertical state, the horizontal rod of the limit connecting rod 32 abuts against the lower side surface of the horizontal plate 312 of the seat body 31, thereby preventing the railing frame 2 from tilting inward towards the door groove 1, ensuring the safety of the operator during the operation process and preventing personnel from falling into the door groove 1 during the operation.

[0030] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments and the features in the embodiments in this application can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A maintenance door slot guardrail, characterized by: The utility model comprises four symmetrical guardrail frames (2) around a door slot (1), wherein a plurality of hinged limit seats (3) are connected to the lower cross piece (21) of each guardrail frame (2); the hinged limit seats (3) are fixed around the door slot (1); when the four guardrail frames (2) rotate around the hinged limit seats (3) to form a guardrail to protect the door slot (1); when the four guardrail frames (2) rotate around the hinged limit seats (3) to form a horizontal state, they are located in pits (11) around the upper side of the door slot (1).

2. The inspection door slot guardrail according to claim 1 is characterized in that: The fence frame (2) is a horizontal frame of a mesh structure, with pipe sleeves (23) arranged at both ends of the upper crosspiece (22); when the fence frame (2) is in a vertical state, two pipe sleeves (23) at the corners of every two adjacent fence frames (2) are plug-connected with U-shaped pins (24).

3. The inspection door slot guardrail according to claim 1 is characterized in that: The hinged limit seat (3) comprises a seat body (31) and a limit connecting rod (32) engaged with a pin of the seat body (31); the limit connecting rod (32) is connected to the lower horizontal piece (21) of the fence frame (2) and can only rotate within an angle range of 90°.

4. The inspection door slot guardrail according to claim 3 is characterized in that: The seat body (31) comprises a horizontal plate (312) vertically connected to the vertical plate (311) laterally, a pin is provided at the upper end of the vertical plate (311), a notch (313) is provided in the middle of the vertical plate (311), and a limit connecting rod (32) is located in the notch (313) and cooperates with the pin.

5. The inspection door slot guardrail according to claim 3 is characterized in that: The limit connecting rod (32) comprises an L-shaped right-angle rod body composed of a horizontal rod connected to a vertical rod, a shaft sleeve (321) is arranged on the vertical rod and rotates in cooperation with the pin shaft, and a horizontal plate (312) of the seat body (31) limits the limit connecting rod (32) to rotate within an angle range of 90°.

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