Double-steel-wire-rope anti-falling high-altitude operation safety hanging bracket

Abstract

The utility model relates to a double-steel-wire-rope anti-falling high-altitude operation safety hanging bracket which comprises a bearing support. The device is characterized in that a movable pulley with the axis extending in the horizontal direction is rotationally arranged on the bearing support, and the movable pulley is connected with the bearing support through an anti-falling mechanism; a sling is wound on the movable pulley; two ends of the sling are respectively connected with a winding drum and a fixed frame; the lengths of the slings on the two sides are consistent through rotation of the movable pulley, and stress unbalance of the slings is avoided; after one end of the sling is disconnected, the bearing support moves downwards under the action of gravity, the movable pulley is driven by the sling to rotate in an accelerated mode, the anti-falling mechanism is driven by the movable pulley to be started, the movable pulley stops rotating, the sling continues to pull the bearing support, the bearing support is prevented from falling, and the device is simple, efficient, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of safety gantry technology, and in particular to a double wire rope anti-fall safety gantry for high-altitude operations. Background Technology

[0002] Currently, in order to improve the safety of high-altitude operations, the state has put forward relevant safety production regulations and rules. Existing safety gantry usually uses multiple slings for connection. However, during the movement of the safety gantry, the length of the slings released by different drums is inaccurate, resulting in inconsistent stress on each sling, which can easily lead to sling breakage and pose a significant safety hazard. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a double wire rope fall prevention safety gantry for high-altitude operations. This gantry ensures that the lengths of the slings on both sides are consistent by rotating a movable pulley, thus avoiding imbalance of sling force. It is simple, efficient, safe, reliable, and easy to operate.

[0004] This utility model is achieved through the following technical solution: a double wire rope fall-prevention safety hoist for high-altitude operations is provided, including a load-bearing support; a movable pulley with its axis extending horizontally is mounted on the load-bearing support, and the movable pulley is connected to the load-bearing support through a fall-prevention mechanism; a sling is wound on the movable pulley, and both ends of the sling are connected to a drum and a fixing frame, respectively; the rotation of the movable pulley ensures that the lengths of the slings on both sides are consistent, avoiding imbalance of force on the slings; when one end of the sling is disconnected, the load-bearing support moves downward under the action of gravity, the movable pulley accelerates its rotation under the drive of the sling, the fall-prevention mechanism is activated under the drive of the movable pulley, the movable pulley stops rotating, and the sling continues to hold the load-bearing support, preventing the load-bearing support from falling.

[0005] As an optimization, the fall protection mechanism includes a brake wheel coaxially fixed on a movable pulley. The brake wheel has several grooves A extending radially along the brake wheel, and a brake rod slides in the grooves A. The brake rod is connected to the brake wheel through a return spring A. A crossbar is provided on the load-bearing bracket, and the movement trajectories of the crossbar and the brake rod intersect. The movable pulley accelerates the rotation, causing the brake wheel to accelerate. Under the action of centrifugal force, the brake rod moves outward along the grooves A and intersects with the crossbar, and the movable pulley stops rotating.

[0006] As an optimization, the load-bearing bracket is equipped with clamping blocks arranged opposite each other. The clamping blocks have a sliding groove B that is inclined in the vertical direction. A brake block slides on the sliding groove B, and the sling is located between the two brake blocks. The load-bearing bracket is equipped with a slide rail that extends in the vertical direction. The crossbar slides on the slide rail and is connected to the slide rail through a return spring B. The crossbar is also hinged to the brake block through a connecting rod. The brake rod drives the crossbar to slide downward, and the crossbar drives the brake block to move downward through the connecting rod. The brake block slides on the clamping block and moves towards each other. The brake block clamps the sling to prevent the sling from loosening.

[0007] As an optimization, the brake block has anti-slip grooves on the side facing the sling; the anti-slip grooves prevent the sling from slipping.

[0008] As an optimization, the movable pulleys are set opposite each other on the load-bearing bracket, and the two ends of the sling pass between the two movable pulleys; the sling passing between the two movable pulleys prevents the load-bearing bracket from tilting if the sling breaks.

[0009] As an optimization, movable pulleys are installed at both ends of the load-bearing bracket, and the movable pulleys are coaxially fixed through the drive shaft; the drive shaft ensures that the movable pulleys at both ends of the load-bearing bracket move synchronously, preventing the load-bearing bracket from tilting.

[0010] The beneficial effects of this utility model are as follows: the rotation of the movable pulley ensures that the lengths of the slings on both sides are consistent, thus avoiding imbalance of the sling force; the accelerated rotation of the movable pulley drives the brake wheel to rotate faster, and the brake rod moves outward along the slide groove A under the action of centrifugal force and intersects with the crossbar, at which point the movable pulley stops rotating; the brake rod drives the crossbar to slide downward, and the crossbar drives the brake block to move downward through the connecting rod. The brake block slides on the clamping block and moves towards each other, clamping the sling to prevent it from loosening. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view (I) of the present invention;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure at point A;

[0013] Figure 3 for Figure 2 Cross-sectional view at point aa;

[0014] Figure 4 This is a cross-sectional view (II) of the present invention;

[0015] Figure 5 for Figure 4 Cross-sectional view at bb;

[0016] Figure 6 This is a schematic diagram of the structure of this utility model;

[0017] As shown in the figure:

[0018] 1. Load-bearing bracket, 2. Movable pulley, 3. Sling, 4. Fall protection mechanism, 5. Drum, 6. Fixed frame, 7. Clamping block, 8. Brake block, 9. Slide rail, 10. Return spring B, 11. Drive shaft, 12. Connecting rod, 401. Brake wheel, 402. Brake lever, 403. Return spring A, 404. Crossbar. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0020] like Figures 1-6 The present invention relates to a double wire rope fall-prevention safety hoist for high-altitude operations, comprising a load-bearing support 1; a movable pulley 2 with its axis extending horizontally is mounted on the load-bearing support 1, the movable pulley 2 being connected to the load-bearing support 1 via a fall-prevention mechanism 4; a sling 3 is wound around the movable pulley 2, with a drum 5 and a fixing frame 6 respectively connected to both ends of the sling 3; a drive mechanism is connected to the drum 5, and one end of the sling 3 is wound around the drum 5.

[0021] When the drum 5 rotates, the sling 3 extends and retracts, the movable pulley 2 rotates, and the load-bearing bracket 1 moves upward or downward in the vertical direction; after one end of the sling 3 is disconnected, the load-bearing bracket 1 moves downward under the action of gravity, the movable pulley 2 accelerates its rotation under the drive of the sling 3, the anti-fall mechanism 4 is activated under the drive of the movable pulley 2, the movable pulley 2 stops rotating, the sling 3 continues to pull the load-bearing bracket 1, and the load-bearing bracket 1 stops falling.

[0022] like Figure 4 and Figure 5 The fall arresting mechanism 4 shown includes a brake wheel 401 coaxially fixed on the movable pulley 2. The brake wheel 401 has several grooves A extending radially along the brake wheel 401. A brake rod 402 slides in the grooves A. The brake rod 402 is connected to the brake wheel 401 through a return spring A403. A crossbar 404 is provided on the load-bearing bracket 1, and the movement trajectories of the crossbar 404 and the brake rod 402 intersect.

[0023] The movable pulley 2 rotates at a constant speed, and the brake lever 402 remains inside the brake wheel 401 under the action of the return spring A403; the movable pulley 2 accelerates its rotation and drives the brake wheel 401 to accelerate its rotation, and the brake lever 402 moves outward along the slide groove A under the action of centrifugal force, and the return spring A403 relaxes; the brake lever 402 rotates under the drive of the brake wheel 401 until the brake lever 402 and the crossbar 404 intersect, the brake wheel 401 stops rotating and drives the movable pulley 2 to stop rotating.

[0024] like Figure 2 , 4 and Figure 5 The load-bearing bracket 1 shown is provided with clamping blocks 7 arranged opposite each other. The clamping blocks 7 are provided with a sliding groove B that is inclined in the vertical direction. A brake block 8 is slidably mounted on the sliding groove B. The sling 3 is located between the two brake blocks 8. The load-bearing bracket 1 is provided with a slide rail 9 that extends in the vertical direction. A crossbar 404 is slidably mounted on the slide rail 9. The crossbar 404 is connected to the slide rail 9 through a return spring B10. The crossbar 404 is also hinged to the brake block 8 through a connecting rod 12.

[0025] The brake lever 402 drives the crossbar 404 to slide downwards, the return spring B10 contracts, and the crossbar 404 drives the brake block 8 to move downwards through the connecting rod 12. The brake block 8 slides on the clamping block 7 and moves towards each other. The brake block 8 clamps the sling 3, and the sling 3 stops loosening.

[0026] like Figure 5 The brake block 8 shown has anti-slip texture on the side facing the sling 3.

[0027] Brake block 8 clamps the sling 3 and prevents the sling 3 from slipping through anti-slip grooves.

[0028] like Figure 1 , 2 and Figure 4 The movable pulleys 2 shown are mounted opposite each other on the load-bearing bracket 1, and the two ends of the sling 3 pass through the space between the two movable pulleys 2.

[0029] like Figure 6 The load-bearing bracket 1 shown is provided with movable pulleys 2 at both ends, and the movable pulleys 2 are coaxially fixed through the transmission shaft 11.

[0030] The movable pulley 2 rotates and is driven by the transmission rod. When any of the slings 3 is disconnected, the movable pulley 2 connected to the disconnected sling 3 stops rotating. Under the transmission rod, the movable pulleys 2 at both ends of the load-bearing bracket 1 stop rotating.

[0031] In actual production, the drum 5 rotates, the sling 3 extends and retracts, the movable pulley 2 rotates at a constant speed and is transmitted through the transmission rod, and the brake lever 402 remains inside the brake wheel 401 under the action of the return spring A403; the load-bearing bracket 1 moves upward or downward in the vertical direction; after any sling 3 is disconnected, the load-bearing bracket 1 moves downward under the action of gravity, the movable pulley 2 accelerates its rotation under the drive of the sling 3, the movable pulley 2 accelerates its rotation and drives the brake wheel 401 to accelerate its rotation, the brake lever 402 moves outward along the slide groove A under the action of centrifugal force, and the return spring A403 relaxes; the brake lever 402 is in braking... Driven by the wheel 401, the brake lever 402 and the crossbar 404 intersect. The brake lever 402 drives the crossbar 404 to slide downwards, the return spring B10 contracts, and the crossbar 404 drives the brake block 8 to move downwards through the connecting rod 12. The brake block 8 slides on the clamping block 7 and moves towards each other. The brake block 8 clamps the sling 3 and prevents the sling 3 from slipping through the anti-slip texture. The sling 3 stops loosening, the brake wheel 401 stops rotating and drives the movable pulley 2 to stop rotating. Under the transmission of the transmission rod, the movable pulleys 2 at both ends of the load-bearing bracket 1 stop rotating, the sling 3 continues to pull the load-bearing bracket 1, and the load-bearing bracket 1 stops falling.

[0032] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A double-wire rope fall-prevention safety gantry for high-altitude operations, comprising a load-bearing support (1); characterized in that: A movable pulley (2) with its axis extending horizontally is mounted on the load-bearing bracket (1). The movable pulley (2) is connected to the load-bearing bracket (1) through a fall prevention mechanism (4). A sling (3) is wound around the movable pulley (2). A drum (5) and a fixing frame (6) are connected to the two ends of the sling (3) respectively.

2. The double wire rope fall-prevention safety scaffold for high-altitude operations according to claim 1, characterized in that: The fall arrest mechanism (4) includes a brake wheel (401) coaxially fixed on the movable pulley (2). The brake wheel (401) has several grooves A extending radially along the brake wheel (401). A brake rod (402) is slidably mounted in the grooves A. The brake rod (402) is connected to the brake wheel (401) through a return spring A (403). A crossbar (404) is provided on the load-bearing bracket (1), and the movement trajectories of the crossbar (404) and the brake rod (402) intersect.

3. The double wire rope fall-prevention safety gantry for high-altitude operations according to claim 2, characterized in that: The load-bearing bracket (1) is provided with clamping blocks (7) arranged opposite to each other. The clamping blocks (7) are provided with a sliding groove B that is inclined in the vertical direction. A brake block (8) is slidably mounted on the sliding groove B. The sling (3) is located between the two brake blocks (8). The load-bearing bracket (1) is provided with a slide rail (9) that extends in the vertical direction. A crossbar (404) is slidably mounted on the slide rail (9). The crossbar (404) is connected to the slide rail (9) through a return spring B (10). The crossbar (404) is hinged to the brake block (8) through a connecting rod (12).

4. The double wire rope fall-prevention safety gantry for high-altitude operations according to claim 3, characterized in that: The brake block (8) has anti-slip texture on the side facing the sling (3).

5. The double wire rope fall-prevention safety gantry for high-altitude operations according to claim 1, characterized in that: The movable pulleys (2) are set opposite each other on the load-bearing bracket (1), and the two ends of the sling (3) pass through the two movable pulleys (2).

6. The double wire rope fall-prevention safety gantry for high-altitude operations according to claim 1, characterized in that: The load-bearing bracket (1) is provided with movable pulleys (2) at both ends, and the movable pulleys (2) are coaxially fixed through the transmission shaft (11).

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