Falling protector for high-altitude operation

Abstract

The falling protector comprises a shell, an opening is formed in one side of the shell, and a cover plate is connected to the opening in a sealed mode through a bolt; a wrapping post is embedded between the shell and the cover plate; a safety rope is wound on the wrapping post; a strip-shaped threading groove is formed in the bottom of the shell; the locking device is fixedly installed in the center of the bottom face of the shell and internally provided with a through groove for the safety rope to penetrate through. A buffering mechanism and a rotating direction locking mechanism are arranged in the locking device. The shaking amplitude of the safety rope is reduced through the buffering mechanism in the locking device, and therefore transition of the safety rope is stable when the safety rope is in a defensive line; the rotating direction locking mechanism can perform reverse locking on the rotating direction of the safety rope; therefore, rotation of the safety rope is reduced, and safety of workers is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of fall arresters, in particular to a fall arrester for aerial work. Background Art

[0002] A fall arrester is a protective product that can quickly brake and lock a falling object within a limited distance to prevent the object from falling quickly. It is suitable for cargo lifting. At the same time, it can protect the life safety of operators at high altitudes and prevent damage to the lifted workpieces. It is widely used in various places that require lifting and high-altitude operations, especially construction sites. However, the existing fall arresters are not ideal for protecting objects and workers during use due to their unsatisfactory fall prevention effects.

[0003] Therefore, it is urgent to design a fall arrester for high-altitude operations with rotational locking. Summary of the invention

[0004] The purpose of the present invention is to provide a fall arrester for aerial work to solve the problems existing in the above-mentioned prior art. If a worker falls during aerial work, the fall arrester can be reversely locked along the rotation direction of the safety rope.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a fall arrester for high-altitude work, comprising:

[0006] A shell, one side of which is provided with an opening, and a cover plate is sealed and connected to the opening by bolts; a winding post is installed between the shell and the cover plate; a safety rope is wound around the winding post; a strip-shaped wire threading groove is provided at the bottom of the shell;

[0007] The locker is fixedly mounted at the center of the bottom surface of the housing and is provided with a through slot for the safety rope to pass through; the locker is provided with a buffer mechanism and a rotation locking mechanism;

[0008] The top of the locker is a funnel-shaped structure, and the bottom is a cylindrical structure; the buffer mechanism is installed in the through groove; an annular accommodating cavity is opened inwardly at the bottom of the through groove, and the rotational locking mechanism is fixedly installed in the accommodating cavity.

[0009] A first rotating plate and a second rotating plate are fixedly mounted at both ends of the winding post, respectively; the first rotating plate forms an outer edge toward an end away from the winding post, and the outer edge of the first rotating plate is tightly attached to the inner wall of the shell through a sealing gasket; a solid column is also formed in the center of the first rotating plate;

[0010] A first fixing ring is formed in the center of one side of the shell opposite to the cover plate; the solid column is embedded in the inner ring of the first fixing ring; a torsion spring is also installed between the outer ring of the first fixing ring and the outer edge, and the torsion spring is used to reset the safety rope.

[0011] A plurality of ratchet grooves are obliquely opened at equal intervals along the circumferential direction at the center of the side wall of the second rotating plate; a pawl is rotatably installed in the ratchet groove, and the movable end of the pawl extends out of the ratchet groove; a second fixing ring is fixedly installed on the side wall of the cover plate; a plurality of ratchet locking teeth cooperating with the pawl are formed circumferentially on the inner ring of the second fixing ring.

[0012] The buffer mechanism comprises a first support column fixedly installed in the locker, a universal ball is fixedly formed at the movable end of the first support column, and the first support column is connected to a buffer ring through the universal ball; the inner wall of the buffer ring forms an arc-shaped protrusion toward the center;

[0013] A first mounting seat is also fixedly mounted on the bottom of the buffer ring, and one end of a second support column is rotatably mounted in the first mounting seat through a pin; the other end of the second support seat is movably mounted in the second mounting seat; and the second mounting seat is mounted on the inner wall of the through groove.

[0014] An elastic cloth is fixedly mounted on the end of the second support column, and the outer periphery of the elastic cloth is embedded in the second mounting seat.

[0015] The rotation locking mechanism comprises an adjusting ring; the adjusting ring is provided with four sections, and adjacent adjusting rings are connected by elastic ropes, and arc grooves are provided at both ends of the adjusting ring; the elastic rope is fixedly installed on the bottom surface of the arc groove; and a plurality of guide blocks are also fixedly installed on the elastic rope;

[0016] A mounting ring is also fixedly installed in the middle of the outer ring of each adjusting ring; a pull ring is installed on the mounting ring; the pull ring is installed on the movable end of the electric push rod, and the fixed end of the electric push rod is fixedly installed in the accommodating groove; the movable end of the electric push rod forms an angle of 15-20 degrees with the adjusting ring.

[0017] The rotational locking mechanism is provided with two groups, and the electric push rods of the two rotational locking mechanisms are arranged in opposite directions; a power supply is also fixedly installed at the bottom end of the outer wall of the locker, and the power supply is electrically connected to the electric push rod.

[0018] An angle sensor is also fixedly mounted on the end of the safety rope.

[0019] A limit strip is also fixedly installed in the shell; the limit strip is placed below the winding column, and a wire receiving groove is provided in the limit strip; both ends of the wire receiving groove are arc-shaped transitions, and the inner side wall is a wavy structure.

[0020] A connecting column is also installed on the top of the shell; a lifting ring is sleeved on the connecting column.

[0021] The present invention discloses the following technical effects: the present invention reduces the swing amplitude of the safety rope through the buffer mechanism in the locker, thereby making the safety rope transition smoothly when in the defense line; the rotation locking mechanism can reversely lock the rotation direction of the safety rope, thereby reducing the rotation of the safety rope and ensuring the safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a schematic diagram of the overall structure of the fall arrester for high-altitude work in the present invention;

[0024] Figure 2 It is a schematic diagram of the shell structure in the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the limit strip in the present invention;

[0026] Figure 4 It is a schematic diagram of the cover plate structure in the present invention;

[0027] Figure 5 It is a schematic diagram of the winding column structure in the present invention;

[0028] Figure 6 It is a schematic diagram of the end surface structure of the first rotating plate in the present invention;

[0029] Figure 7 It is a schematic diagram of the pawl locking structure in the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the lock in the present invention;

[0031] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at A in the middle;

[0032] Fig.10 It is a schematic diagram of the structure of the rotational locking mechanism in the present invention;

[0033] Among them, 1. shell; 2. cover plate; 3. winding column; 4. lock; 5. adjustment ring; 6. angle sensor; 11. threading groove; 12. connecting column; 13. lifting ring; 14. limit strip; 15. wire receiving groove; 31. first rotating plate; 32. second rotating plate; 33. sealing gasket; 34. solid column; 35. first fixing ring; 36. torsion spring; 37. ratchet groove; 38. pawl; 39. second fixing ring; 41. first supporting column; 42. universal ball; 43. buffer ring; 44. first mounting seat; 45. second supporting column; 46. second mounting seat; 47. elastic cloth; 51. elastic rope; 52. arc groove; 53. guide block; 54. mounting ring; 55. pull ring; 56. electric push rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] The present invention provides a fall arrester for aerial work, comprising:

[0037] The housing 1 has an opening on one side, and a cover plate 2 is sealed and connected to the opening by bolts; a winding post 3 is installed between the housing 1 and the cover plate 2; a safety rope is wound around the winding post 3; a strip-shaped threading groove 11 is provided at the bottom of the housing 1;

[0038] The locker 4 is fixedly mounted at the center of the bottom surface of the housing 1 and has a through slot for the safety rope to pass through. The locker 4 is provided with a buffer mechanism and a rotation locking mechanism;

[0039] The top of the locker 4 is a funnel-shaped structure, and the bottom is a cylindrical structure; the buffer mechanism is installed in the through groove; an annular accommodating cavity is opened inwardly at the bottom of the through groove, and a rotational locking mechanism is fixedly installed in the accommodating cavity.

[0040] In one embodiment of the present invention, a winding post 3 is limitedly installed between the shell 1 and the cover plate 2. The winding post 3 locks the safety rope when it is severely stretched through a pawl 38 at one end thereof to prevent the safety rope from continuing to be released; the torsion spring 36 at the other end of the winding post 3 is used for resetting and recovering the safety rope.

[0041] In one embodiment of the present invention, a fixing hole is provided on the winding post 3 , and the fixing hole is used to install the end of the safety rope, and then the safety rope is wound around the winding post 3 .

[0042] In one embodiment of the present invention, the shell 1 and the cover plate 2 are threadedly connected through the corners. To enhance the connection strength, a plug-in structure may be used at the center of the side of the shell 1 to prevent damage due to tangential forces.

[0043] In one embodiment of the present invention, the buffer mechanism in the locker 4 is used for the smooth transition of the safety rope when it is violently stretched. Since the safety rope is not regularly wound after multiple uses, the buffer ring 43 can be used to reduce the shaking amplitude of the safety rope, thereby making the safety rope transition smoothly when in the defense line.

[0044] In one embodiment of the present invention, the rotational locking mechanism is used to lock the safety rope through the fall arrester after the safety rope is stretched rapidly and violently. The safety rope will shake and rotate violently, causing the worker to shake violently and rotate his body along with the safety rope. The rotational locking mechanism applies a force in the opposite direction of the rotation of the safety rope, thereby reducing the rotation of the safety rope and ensuring the safety of the worker.

[0045] The first rotating plate 31 and the second rotating plate 32 are fixedly installed at both ends of the winding post 3, respectively. The first rotating plate 31 forms an outer edge toward the end away from the winding post 3, and the outer edge of the first rotating plate 31 is tightly attached to the inner wall of the housing 1 through a sealing gasket 33; a solid column 34 is also installed in the center of the first rotating plate 31; the solid column 34 is fixedly installed at the end of the winding post 3;

[0046] A first fixing ring 35 is formed in the center of one side of the shell 1 opposite to the cover plate 2; the solid column 34 is embedded in the inner circle of the first fixing ring 35; a torsion spring 36 is also installed between the outer circle and the outer edge of the first fixing ring 35, and the torsion spring 36 is used to achieve the reset of the safety rope.

[0047] In one embodiment of the present invention, the outer edge of the first rotating plate 31 is tightly fitted to the inner wall of the shell 1 through the sealing gasket 33, so that the solid column 34 in the winding column can ensure the sealing of the torsion spring 36 when it rotates around the inner circle of the first fixed ring 35 to release the wire.

[0048] A plurality of ratchet grooves 37 are obliquely provided at equal intervals along the circumferential direction at the center of the side wall of the second rotating plate 32; a pawl 38 is rotatably installed in the ratchet groove 37, and the movable end of the pawl 38 extends out of the ratchet groove 37; a second fixing ring 39 is fixedly installed on the side wall of the cover plate 2; a plurality of ratchet locking teeth cooperating with the pawl 38 are formed circumferentially on the inner circle of the second fixing ring 39.

[0049] In one embodiment of the present invention, the ratchet groove 37 formed on the second rotating plate 32 is a U-shaped groove, and the pawl 38 can deflect in the ratchet groove 37 . In normal use, the pawl 38 and the pawl locking teeth do not contact each other.

[0050] In one embodiment of the present invention, when the safety rope is being paid out normally at a slow speed, the safety rope will be paid out normally and the torsion spring 36 will be tightened; at this time, since the centrifugal force applied to the pawl 38 is small, the pawl 38 moves slowly along the ratchet groove 37, and the pawl 38 and the pawl locking teeth do not contact each other.

[0051] Furthermore, when an unexpected situation occurs, the safety rope rotates in the fast direction and the rotation speed of the winding column 3 increases sharply. At this time, due to the increase in the centrifugal force applied to the pawl 38, the pawl 38 is completely thrown out along the ratchet groove 37. At this time, the pawl 38 and the pawl locking tooth are limited and locked, and the safety rope cannot continue to be released.

[0052] The buffer mechanism includes a first support column 41 fixedly installed in the locker 4, a universal ball 42 is fixedly formed at the movable end of the first support column 41, and the first support column 41 is connected to a buffer ring 43 through the universal ball 42; the inner wall of the buffer ring 43 forms an arc-shaped protrusion toward the center;

[0053] A first mounting seat 44 is fixedly mounted at the bottom of the buffer ring 43. One end of a second support column 45 is rotatably mounted in the first mounting seat 44 via a pin. The other end of the second support seat 45 is movably mounted in a second mounting seat 46. The second mounting seat 46 is mounted on the inner wall of the through groove.

[0054] An elastic cloth 47 is fixedly mounted on the end of the second support column 45 , and the outer periphery of the elastic cloth 47 is embedded in the second mounting seat 46 .

[0055] In one embodiment of the present invention, the elastic cloth 47 can be adjusted at any angle, so that the second support column 45 can be adjusted at any angle.

[0056] In one embodiment of the present invention, the buffer mechanism and the arc-shaped protrusion on the inner wall of the buffer ring 43 contact the safety rope for buffering, thereby reducing the violent and large-scale shaking of the safety rope; in order for the inner wall of the buffer ring 43 to cooperate with the extrusion of the safety rope to unload the force, the universal ball 42 at the end of the first support column 41 is used to adjust the angle, and then after the angle of the buffer ring 43 changes, the buffering adjustment of the elastic cloth 47 is used to achieve further unloading of the force.

[0057] In one embodiment of the present invention, the connection portion between the first support column 41 and the buffer ring 43 has a partial gap, which can ensure the movable space between the first support column 41 and the buffer ring 43.

[0058] The rotation locking mechanism includes an adjusting ring 5; the adjusting ring 5 is provided with four sections, and adjacent adjusting rings 5 ​​are connected by elastic ropes 51, and arc grooves 52 are provided at both ends of the adjusting ring 5; the elastic rope 51 is fixedly installed on the bottom surface of the arc groove 52; and a plurality of guide blocks 53 are also fixedly installed on the elastic rope 51;

[0059] A mounting ring 54 is also fixedly installed in the middle of the outer ring of each adjusting ring 5; a pull ring 55 is installed on the mounting ring 54; the pull ring 55 is installed on the movable end of the electric push rod 56, and the fixed end of the electric push rod 56 is fixedly installed in the accommodating groove; the movable end of the electric push rod 56 forms an angle of 15-20 degrees with the adjusting ring.

[0060] There are two sets of rotational locking mechanisms, and the electric push rods of the two rotational locking mechanisms are arranged in opposite directions; a power supply is also fixedly installed at the bottom end of the outer wall of the locker 4, and the power supply is electrically connected to the electric push rod 56.

[0061] An angle sensor 6 is also fixedly mounted on the end of the safety rope.

[0062] In one embodiment of the present invention, the angle sensor 6 is preferably an MPS angle sensor, which is arranged at one end of the safety rope connected to the staff, and is used to monitor the rotation direction of the safety rope and cooperate with the rotation locking mechanism to reversely lock the safety rope.

[0063] A limit strip 14 is also fixedly installed in the housing 1; the limit strip 14 is placed below the winding pole 3, and a wire receiving groove 15 is opened in the limit strip 14; the two ends of the wire receiving groove 15 are arc-shaped transitions, and the inner side wall is a wavy structure.

[0064] A connecting column 12 is also installed at the top of the housing 1 ; a lifting ring 13 is sleeved on the connecting column 12 .

[0065] In one embodiment of the present invention, the limit strip 14 is not regularly wound when the safety rope is wound after multiple uses, and the movement range of the safety rope can be slowed down by the wire receiving groove 15. The safety rope is not ground when it moves due to the transition of the wavy inner wall.

[0066] In one embodiment of the present invention, the rotation locking mechanism is driven by the electric push rod 56 to pre-tighten the oblique safety ring 54 inwardly so that the adjustment ring 5 has a rotation direction, thereby locking the safety rope in reverse.

[0067] In one embodiment of the present invention, two sets of rotational locking mechanisms are provided. After the rotational direction of the safety rope is determined through feedback from the angle sensor 6, a set of rotational locking mechanisms opposite to the rotational direction of the safety rope is selected to start, thereby completing the reverse locking operation.

[0068] In one embodiment of the present invention, one end of the safety rope is fixed on the winding column 3, and then passes through the wire groove 15 in the limiting strip 14 through the threading groove 11, the threading groove 11 is also a strip structure, slightly smaller than the wire groove 15; then it extends out of the through groove through the buffer ring 43 and is then wrapped around the staff.

[0069] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solution of the present invention by ordinary technicians in this field should all fall within the scope of protection determined by the claims of the present invention.

Claims

1. A fall arrester for aerial work, characterized in that: include: A shell (1), wherein one side of the shell (1) is provided with an opening, and a cover plate (2) is sealed and connected to the opening via bolts; a winding post (3) is installed between the shell (1) and the cover plate (2); a safety rope is wound around the winding post (3); and a strip-shaped wire threading groove (11) is provided at the bottom of the shell (1); A locker (4); the locker (4) is fixedly mounted at the center of the bottom surface of the housing (1) and is provided with a through slot for the safety rope to pass through; a buffer mechanism and a rotational locking mechanism are provided in the locker (4); The top of the locker (4) is a funnel-shaped structure, and the bottom is a cylindrical structure; the buffer mechanism is installed in the through groove; the bottom of the through groove is provided with an annular accommodating cavity inwardly, and the rotational locking mechanism is fixedly installed in the accommodating cavity.

2. A fall arrester for aerial work according to claim 1, characterized in that: A first rotating plate (31) and a second rotating plate (32) are respectively fixedly mounted at both ends of the winding post (3); an outer edge is formed on the end of the first rotating plate (31) away from the winding post (3); the outer edge of the first rotating plate (31) is tightly fitted to the inner wall of the shell (1) via a sealing gasket (33); a solid column (34) is also mounted at the center of the first rotating plate (31); the solid column (34) is fixedly mounted on the end of the winding post (3); A first fixing ring (35) is formed at the center of one side of the shell (1) which is arranged opposite to the cover plate (2); the solid column (34) is embedded in the inner ring of the first fixing ring (35); a torsion spring (36) is also installed between the outer ring of the first fixing ring (35) and the outer edge, and the torsion spring (36) is used to achieve the reset of the safety rope.

3. A fall arrester for aerial work according to claim 2, characterized in that: A plurality of ratchet grooves (37) are obliquely formed at equal intervals along the circumferential direction at the center of the side wall of the second rotating plate (32); a ratchet pawl (38) is rotatably mounted in the ratchet groove (37), and a movable end of the ratchet pawl (38) extends out of the ratchet groove (37); a second fixing ring (39) is fixedly mounted on the side wall of the cover plate (2); and a plurality of ratchet locking teeth cooperating with the ratchet pawl (38) are formed circumferentially on the inner circle of the second fixing ring (39).

4. A fall arrester for aerial work according to claim 1, characterized in that: The buffer mechanism comprises a first support column (41) fixedly installed in the locker (4); a universal ball (42) is fixedly formed on the movable end of the first support column (41); the first support column (41) is connected to a buffer ring (43) via the universal ball (42); the inner wall of the buffer ring (43) forms an arc-shaped protrusion toward the center; A first mounting seat (44) is also fixedly mounted on the bottom of the buffer ring (43); one end of a second support column (45) is rotatably mounted in the first mounting seat (44) via a pin; the other end of the second support column (45) is movably mounted in a second mounting seat (46); and the second mounting seat (46) is mounted on the inner wall of the through groove.

5. A fall arrester for aerial work according to claim 4, characterized in that: An elastic cloth (47) is fixedly mounted on the end of the second support column (45), and the outer periphery of the elastic cloth (47) is embedded in the second mounting seat (46).

6. A fall arrester for aerial work according to claim 1, characterized in that: The rotational locking mechanism comprises an adjusting ring (5); the adjusting ring (5) is provided with four sections, adjacent adjusting rings (5) are connected by elastic ropes (51), both ends of the adjusting ring (5) are provided with arc grooves (52); the bottom surface of the arc groove (52) is fixedly mounted with the elastic rope (51); a plurality of guide blocks (53) are also fixedly mounted on the elastic rope (51); A mounting ring (54) is fixedly mounted in the middle of the outer ring of each adjusting ring (5); a pull ring (55) is mounted on the mounting ring (54); the pull ring (55) is mounted on the movable end of the electric push rod (56); the fixed end of the electric push rod (56) is fixedly mounted in the accommodating groove; the movable end of the electric push rod (56) forms an angle of 15-20 degrees with the adjusting ring.

7. A fall arrester for aerial work according to claim 1, characterized in that: The rotational locking mechanism is provided with two groups, and the electric push rods of the two rotational locking mechanisms are arranged in opposite directions; a power source is also fixedly mounted on the bottom end of the outer wall of the locker (4), and the power source is electrically connected to the electric push rod (56).

8. A fall arrester for aerial work according to claim 1, characterized in that: An angle sensor (6) is also fixedly mounted on the end of the safety rope.

9. A fall arrester for aerial work according to claim 1, characterized in that: A limit strip (14) is also fixedly installed in the housing (1); the limit strip (14) is placed below the winding pole (3), and a wire receiving groove (15) is provided in the limit strip (14); the two ends of the wire receiving groove (15) are arc-shaped transitions, and the inner side wall is a wavy structure.

10. A fall arrester for aerial work according to claim 1, characterized in that: A connecting column (12) is also installed on the top of the shell (1); a hanging ring (13) is sleeved on the connecting column (12).

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