A working platform guardrail locking mechanism

Abstract

The present invention discloses a working platform guardrail locking mechanism. It includes a plurality of mutually cooperating pairs of locking positions arranged on the main support guardrail and the side guardrail, each pair of locking positions includes an axial hole arranged on the main support guardrail and a pin hole arranged on the side guardrail, an operating plate and a connecting plate are connected to the axial hole through a pin shaft, a U-shaped locking pin can be connected in series in the pin hole, and the main support guardrail and the side guardrail can be locked by installing the operating plate and the connecting plate on the U-shaped locking pin. The advantages are: its structure is very compact, the operation is simple and convenient, the platform folding guardrail can be quickly folded and restored, and the gap between the folding guardrails can be reduced, thereby reducing the overall height of the guardrail after folding, improving the passability of the whole machine, and achieving the purpose of rapid transfer.

Description

Technical Field

[0001] The invention relates to an auxiliary structure of a working platform guardrail, in particular to a working platform guardrail locking mechanism. Background Art

[0002] At present, most of the working platform guardrails of scissor-type aerial work platforms are folding guardrails, which need to be locked when erected. The current industry mostly adopts the method of welding U-shaped bent plates on the guardrails and locking them with locking pins or pin shafts. However, since the scissor-type aerial work platforms need to fold the guardrails of the working platform due to door height restrictions during transportation or transfer, the existing guardrail welding U-shaped bent plates with locking pins or pin shafts will occupy the overall height of the platform after the guardrails are folded, which may cause poor passability or impassability. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a working platform guardrail locking mechanism which can reduce the height of the entire vehicle after the guardrail is folded, thereby achieving improved passability and rapid transfer requirements.

[0004] In order to solve the above technical problems, the working platform guardrail locking mechanism of the present invention includes a plurality of pairs of locking positions that cooperate with each other and are arranged on the main support guardrail and the side guardrail, each pair of locking positions includes an axial hole arranged on the main support guardrail and a pin hole arranged on the side guardrail, an operating plate and a connecting plate that can be pressed on the outer surface of the main support guardrail are connected in the axial hole through a pin shaft, a U-shaped locking pin can be connected in series in the pin hole, and the main support guardrail and the side guardrail can be locked by installing the operating plate and the connecting plate on the U-shaped locking pin.

[0005] The two ends of the pin shaft are provided with flat surfaces, and the operating plate and the connecting plate are both provided with flat holes matching with the flat surfaces. The operating plate and the connecting plate can be installed on the two flat surfaces of the pin shaft through the flat holes so as to rotate synchronously with the pin shaft.

[0006] The operation panel is provided with a paddle for easy operation.

[0007] The main support guardrail is provided with a serial connection hole located below the shaft hole, and the U-shaped locking pin can be serially connected in the serial connection hole in a folded state.

[0008] The U-shaped locking pin includes a shaft and a U-shaped buckle that cooperates with the shaft, one end of the U-shaped buckle is hinged to the head of the shaft, and the other end of the U-shaped buckle is provided with a ring for buckling on the end of the shaft, through which the front guardrail and the side guardrail can be locked in a vertical state.

[0009] The U-shaped buckle is sleeved with a rope for tying the front guardrail and the side guardrail in a folded state.

[0010] The advantages of the present invention are: its structure is very compact, and its operation is simple and convenient. The welding of the traditional U-shaped bent plate and the space occupied by the U-shaped bent plate are eliminated, and the paddle and the connecting plate are cleverly linked through a pin shaft with a flat surface at the end, so that the platform folding guardrail can be quickly folded and restored, and the gap between the folding guardrails can be reduced, thereby reducing the overall height of the guardrail after folding, improving the passability of the whole machine, and achieving the purpose of rapid transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the working platform guardrail in the erected (locked) state in an embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of the working platform guardrail in the folded state in an embodiment of the present invention;

[0013] Figure 3 It is a schematic diagram of the exploded structure of the working platform guardrail locking mechanism of the present invention;

[0014] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0015] Figure 5 It is a schematic diagram of the structure of the working platform guardrail in an upright (unlocked) state in an embodiment of the present invention;

[0016] Figure 6 A schematic diagram of the state of a U-shaped locking pin in the present invention;

[0017] Figure 7 It is a schematic structural diagram of the second state of the U-shaped locking pin in the present invention. DETAILED DESCRIPTION

[0018] The working platform guardrail locking mechanism of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] As shown in the figure, the working platform guardrail locking mechanism of the present invention includes a plurality of pairs of mutually cooperating locking positions arranged on the main support guardrail 1 and the side guardrail 2, wherein the main support guardrail 1 includes a front guardrail and a back guardrail, and the plurality of pairs of locking positions include a pair of locking positions formed between the front guardrail and the right side guardrail 2, a pair of locking positions formed between the front guardrail and the left side guardrail 2, a pair of locking positions formed between the back guardrail and the right side guardrail 2, and a pair of locking positions formed between the back guardrail and the left side guardrail 2. Each pair of locking positions includes an axial hole 3 arranged on the main support guardrail and a pin hole 4 arranged on the side guardrail, and the axial hole 3 is connected by a pin shaft 5 with a locking member that can be pressed in parallel on the side guardrail. An operating plate 6 and a connecting plate 7 are provided on the outer surface of the main support guardrail, and a paddle 8 for facilitating operation is provided on the operating plate 6. As can be seen from the figure, the paddle 8 is located on one side of the free end of the pin shaft, and the two ends of the pin shaft 5 are provided with flat surfaces. The operating plate 6 and the connecting plate 7 are both provided with flat holes that match the flat surfaces. The operating plate 6 and the connecting plate 7 can be installed on the two flat surfaces of the pin shaft 5 through the flat holes and fixed by tightening with nuts, thereby enabling the operating plate 6 and the connecting plate 7 to rotate synchronously with the pin shaft, and a U-shaped locking pin 8 can be connected in series in the pin hole 4. By installing the operating plate 6 and the connecting plate 7 on the U-shaped locking pin 8, the front guardrail 1 and the side guardrail 2 can be locked.

[0020] Furthermore, the U-shaped locking pin 8 includes a shaft 9 and a U-shaped buckle 10 matched with the shaft. Figure 4 It can be seen that a boss is provided at one end of the head of the U-shaped buckle 10, and the end of the U-shaped buckle 10 is provided as a necked end. One end of the U-shaped buckle 10 is hinged on the boss of the shaft head, and the other end of the U-shaped buckle 10 is provided with a ring 11. The ring 11 can be buckled on the necked end of the shaft end, thereby the supporting guardrail and the side guardrail 2 can be locked in a vertical state through the ring 11.

[0021] Furthermore, the main support guardrail 1 is provided with a connecting hole located below the shaft hole 3, and the U-shaped locking pin 8 can be connected in series in the connecting hole in the folded state. At the same time, a rope 12 for tying the main support guardrail 1 and the side guardrail 2 in the folded state is sleeved on the U-shaped buckle 10.

[0022] Here’s how to use it:

[0023] 1. If Figure 2 As shown, the process of guardrail folding:

[0024] (1) Remove the U-shaped lock pin, and the operating panel and connecting piece will hang down due to their own weight;

[0025] (2) Use the U-shaped locking pin to pass through the serial hole to fix the operating panel, guardrail and connecting plate;

[0026] (3) Fold the main support guardrail 1 and the side guardrail 2. At this time, the main support guardrail 1 and the side guardrail 2 are in stacked contact with each other, with basically no gap, and the overall height is relatively low. It has been verified that the stacked height of the guardrail is reduced by 70~80mm after folding.

[0027] 2. The process of guardrail from folded state to erected state:

[0028] (1) Erect the main guardrail 1 and the side guardrail 2;

[0029] (2) Remove the U-shaped lock pin and use your finger to push the paddle of the operating panel upward. The paddle will transmit the force and movement direction to the connecting plate through the pin shaft, thereby limiting the tendency of the main support guardrail 1 and the side guardrail 2 to fall over;

[0030] (3) Use U-shaped locking pins to connect and fix the main support guardrail 1 and the side guardrail 2 to the operating plate and the connecting plate, so as to achieve a stable connection between the main support guardrail and the guardrails on both sides.

Claims

1. A working platform guardrail locking mechanism, characterized in that: The invention comprises a plurality of pairs of mutually cooperating locking positions arranged on a main support guardrail (1) and a side guardrail (2), each pair of the locking positions comprising an axial hole (3) arranged on the main support guardrail and a pin hole (4) arranged on the side guardrail, an operating plate (6) and a connecting plate (7) which can be pressed against the outer surface of the main support guardrail are connected to the axial hole (3) via a pin shaft (5), a U-shaped locking pin (8) can be connected in series to the pin hole (4), and the main support guardrail (1) and the side guardrail can be locked by installing the operating plate (6) and the connecting plate (7) on the U-shaped locking pin (8). The side guardrail (2) is locked; the two ends of the pin shaft (5) are provided with flat surfaces, and the operating plate (6) and the connecting plate (7) are both provided with flat holes that match the flat surfaces, and the operating plate (6) and the connecting plate (7) can be installed on the two flat surfaces of the pin shaft (5) through the flat holes so as to be able to rotate synchronously with the pin shaft; the operating plate (6) is provided with a paddle (8) for easy operation; the main support guardrail (1) is provided with a serial connection hole located below the shaft hole (3), and the U-shaped locking pin (8) can be serially connected in the serial connection hole in a folded state.

2. The working platform guardrail locking mechanism according to claim 1, characterized in that: The U-shaped locking pin (8) comprises a shaft (9) and a U-shaped buckle (10) matched with the shaft, one end of the U-shaped buckle (10) is hinged to the head of the shaft, and the other end of the U-shaped buckle (10) is provided with a collar (11) for buckling on the end of the shaft, and the main support guardrail (1) and the side guardrail (2) can be locked in a vertical state through the collar (11).

3. The working platform guardrail locking mechanism according to claim 2, characterized in that: The U-shaped buckle (10) is sleeved with a rope (12) for tying the main support guardrail (1) and the side guardrail (2) in a folded state.

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