A safety protection device for high-altitude construction

Abstract

The present invention relates to the technical field of construction auxiliary equipment, and discloses a high-altitude construction safety protection device, comprising two rotatably arranged swivels, a safety rope being squeezed and passed between the two swivels, a protrusion being provided on the swivel through a shaft, the outer side surface of the protrusion being located downstream of the shaft being arc-shaped and protruding from the outside of the swivel, a limiter being elastically slidably provided inside the swivel, and a plug plate being slidably inserted on the swivel and elastically abutting against the end of the limiter. The present invention can not only lock the protrusion when a hanging basket falls so that the protrusion decelerates and locks the safety rope, but also unlock the protrusion when the hanging basket is running smoothly without falling so that the safety rope will not be squeezed by the protrusion and decelerated and locked, thereby keeping the squeezing force on the safety rope at a low value, thereby greatly reducing the speed at which the safety rope is damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of construction auxiliary equipment, and in particular to a high-altitude construction safety protection device. Background Art

[0002] As building heights increase during construction, workers need to work with a suspended basket that can rise and fall. The suspended basket is suspended in mid-air by a safety rope wound on a winch. The basket is raised and lowered by winding and releasing the safety rope.

[0003] In order to improve the safety of high-altitude construction, a safety protection device is provided in the prior art to lock the safety rope when the hanging basket suddenly falls, thereby stopping the hanging basket from falling and ensuring the safety of the construction workers.

[0004] For example, the Chinese invention patent with application number CN202210999583.8 and publication (announcement) number CN115337566B, entitled “A safety protection device for high-altitude operations”, discloses “a main console with a first slot body opened on the top, and second slot bodies opened on both sides of the first slot body; two sets of locking structures, arranged on both sides of the first slot body; each set of locking structures includes: a first grinding wheel, rotatably arranged in the corresponding second slot body, and abutting against the safety rope; an elastic telescopic component, including a fixed part and an elastic telescopic part; the fixed part is fixedly arranged on the first grinding wheel, and a clamping component is provided on the inner wall of the fixed part; an arc gear is provided at one end of the elastic telescopic part, and the other end of the elastic telescopic part is provided with a The end extends into the fixed part and is connected to the inner wall of the fixed part through an elastic component; a limiting component is fixedly provided at one end of the elastic telescopic part located in the fixed part. In this invention, when the safety rope accelerates and slides down, it drives the first grinding wheel to rotate to generate centrifugal force; as the centrifugal force increases, the limiting component on the elastic telescopic component moves outward and passes through the clamping component and is clamped with the clamping component. At this time, the arc gear moves outward and always keeps meshing with the moving rack assembly; the arc gear drives the moving rack assembly meshed with it to move toward one end through the rotation of the first grinding wheel, and each group of moving rack assemblies drives the corresponding moving limiting assembly to move relative to it, and the ends of the two groups of moving limiting assemblies are staggered and abutted against the safety rope for limiting.

[0005] The aerial work safety protection device provided by the above-mentioned invention patent realizes the deceleration and locking of the safety rope through the cooperation of the two first grinding wheels and the second grinding wheel, combined with the gear rack assembly driven by the centrifugal force, thereby avoiding the huge impact force caused by rapid falling. However, its disadvantage is that the deceleration and locking of the safety rope are achieved by relying on the squeezing force of the two second grinding wheels arranged relatively and staggered on the safety rope, and the squeezing force generated by the two second grinding wheels on the safety rope comes from the torque generated by the two first grinding wheels when the safety rope accelerates to slide down, and the torque of the two first grinding wheels comes from the torque of the two first grinding wheels on the safety rope. The size of the rope extrusion pressure, and it is obvious that in order to achieve the two second grinding wheels locking the safety rope, the two second grinding wheels must have a sufficiently large extrusion pressure on the safety rope. To this end, the two first grinding wheels need to have a sufficiently large extrusion pressure on the safety rope, and regardless of whether the hanging basket falls or not, the safety rope always needs to withstand the high extrusion pressure of the two first grinding wheels. Long-term use in a working environment with high extrusion pressure will undoubtedly greatly increase the damage rate of the safety rope, thereby greatly reducing the service life of the safety rope. Based on this, how to reduce the damage rate of the safety rope on the basis of achieving deceleration and locking of the safety rope is a technical problem that needs to be solved urgently. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-altitude construction safety protection device to solve the above-mentioned shortcomings in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solution: a high-altitude construction safety protection device, comprising two rotating rings, a safety rope is squeezed through the two rotating rings,

[0008] The rotating ring is provided with a protrusion which is rotated by the shaft. The outer side surface of the protrusion located downstream of the shaft is arc-shaped and protrudes from the outside of the rotating ring. A limit piece is elastically slidably provided inside the rotating ring. A plug-in plate is slidably inserted into the rotating ring and elastically abuts against the end of the limit piece.

[0009] When the end of the limiting member elastically abuts against the insert plate, the limiting member and the inner side surface of the protrusion located downstream of the shaft body are offset so that the outer side surface of the protrusion protruding outside the rotating ring can rotate into the rotating ring;

[0010] When the safety rope accelerates and slides down, the rotating ring is driven to rotate to generate centrifugal force to drive the plug plate to slide outward and separate from the end of the limit piece, so that the limit piece slides elastically and abuts against the inner side surface of the protrusion located downstream of the shaft body so that the arc-shaped outer side surface of the protrusion protruding from the outside of the rotating ring can squeeze the safety rope to slow down and lock the safety rope.

[0011] The above-mentioned high-altitude construction safety protection device, the limiting part includes an arc-shaped plate and two abutment rods, the outer arc surface of the arc-shaped plate is adapted to and abuts the inner surface of the protrusion, one end of the two abutment rods is fixedly connected to the arc-shaped plate, and the other end is in sliding abutment with the plug plate.

[0012] The above-mentioned high-altitude construction safety protection device has a curved slide fixedly installed on the front and rear sides of the curved plate. The curved slide is adapted to the curvature of the curved plate and is arranged concentrically. The front side of the swivel is detachably mounted with a front baffle, and the rear side is detachably mounted with a rear baffle. The two curved slides are slidingly connected to the front baffle and the rear baffle in a one-to-one correspondence, and the outer peripheral surfaces of the front baffle and the rear baffle extend to the outside of the swivel.

[0013] The above-mentioned high-altitude construction safety protection device has two support blocks arranged opposite to each other fixedly installed on the inner wall of the swivel, and a support rod is fixedly installed on each of the two support blocks. The two support rods are slidably connected to the arc plate, and a compression spring is sleeved on each of the two support rods, and the compression spring is located between the support block and the arc plate.

[0014] In the above-mentioned high-altitude construction safety protection device, the outer side surface of the protrusion located upstream of the shaft body smoothly transitions with the outer peripheral surface of the swivel, and the inner side surface of the protrusion is an arc whose curvature is adapted to the curvature of the outer curved surface of the arc plate. The outer curved surface of the arc plate is always in contact with the inner side surface of the protrusion located upstream of the shaft body so that when the safety rope is in contact with the outer side surface of the protrusion located upstream of the shaft body, the protrusion will not rotate toward the inside of the swivel.

[0015] The above-mentioned high-altitude construction safety protection device has an opening on the swivel, the shaft is fixedly inserted in the opening, the shaft rotates through the protrusion and a torsion spring is installed between the protrusion, and when the end of the limit member is in elastic contact with the plug plate, based on the torsion force of the torsion spring, the safety rope and the outer side surface of the protrusion located downstream of the shaft are in contact, and an elastic squeezing force is generated between the two so that the safety rope can drive the corresponding swivel to rotate.

[0016] In the above-mentioned high-altitude construction safety protection device, the two side surfaces of the opening in the rotation direction of the swivel and the left and right sides of the protrusion are all arc-shaped, and the two side surfaces of the opening in the rotation direction of the swivel are respectively slidably fitted with the left and right sides of the protrusion.

[0017] The above-mentioned high-altitude construction safety protection device also includes a blocking member rotatably arranged in the swivel ring. During the process of the outer side of the protrusion located downstream of the shaft body rotating toward the inner side of the swivel, the bottom of the protrusion slides and abuts against the blocking member to push the blocking member to rotate.

[0018] In the above-mentioned high-altitude construction safety protection device, the blocking member is provided with a plurality of avoidance holes arranged at equal intervals in the circumferential direction. When the safety rope pushes the protrusion to rotate to a specific angle during the process of sliding down, the plurality of avoidance holes correspond to the bottom of the plug plate in sequence, and the end of the plug plate protrudes from the outside of the swivel.

[0019] In the above-mentioned high-altitude construction safety protection device, when the angle of the protrusion that pushes the rotation of the safety rope is less than a specific angle during the downward movement, the multiple avoidance holes are staggered with the plug plate so that the bottom of the plug plate abuts against the blocking member. When the plug plate abuts against the safety rope, its end squeezes and locks the safety rope.

[0020] Beneficial effect: In the above technical solution, the present invention provides a high-altitude construction safety protection device, which is achieved by rotating a protrusion on the swivel. The outer side surface of the protrusion located downstream of the shaft is arc-shaped and protrudes from the outside of the swivel, and the protrusion can be locked by the limit member. When the limit member is in different positions, the protrusion can be locked and unlocked, and the position change of the limit member depends on whether the limit member is in contact with the plug plate. When the safety rope of descending drives the swivel and the protrusion to rotate, the arc-shaped outer surface of the protrusion protruding from the outside of the swivel continuously squeezes the safety rope. The safety rope can be decelerated first and then locked; and when the hanging basket does not fall, the safety rope slides down in a balanced manner. At this time, the centrifugal force generated by the rotation of the two swivels is less than the sliding resistance of the plug plate, so that the end of the limit piece always abuts against the plug plate. At this time, the limit piece and the inner side surface of the protrusion located downstream of the shaft body are staggered so that the outer side surface of the protrusion located downstream of the shaft body can rotate toward the inside of the swivel. When the safety rope abuts against the arc-shaped outer side surface of the protrusion protruding from the outside of the swivel, the safety rope squeezes and pushes the arc-shaped outer side surface of the protrusion protruding from the outside of the swivel to rotate toward the inside of the swivel so that the protrusion will not squeeze and lock the safety rope. In this process, the squeezing force applied to the safety rope is the squeezing force applied to the safety rope by the two swivels, and the squeezing force applied to the safety rope is small (it is sufficient as long as the safety rope can drive the swivel to rotate when it slides down), so as to reduce damage to the safety rope and increase the service life of the safety rope. It can be seen that the present invention can not only lock the protrusion when the hanging basket falls so that the protrusion can slow down and lock the safety rope, but also unlock the protrusion when the hanging basket does not fall and runs smoothly so that the safety rope will not be squeezed by the protrusion and slowed down and locked, so that the squeezing force on the safety rope is kept at a small value, thereby greatly reducing the damage speed of the safety rope, and can effectively solve the shortcomings of the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1A schematic diagram of the structure between the safety protection device and the safety rope provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a partial explosion structure provided by an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a swivel provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure between the insert plate and the return spring provided in an embodiment of the present invention;

[0026] Figure 5 A schematic structural diagram of a blocking member provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure between the position limiting member, the support rod, the support block and the compression spring provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the combined structure of a limiter, a blocking member, a plug plate, a fixing block, a supporting block, a supporting rod, and a compression spring provided in an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the structure of an embodiment of the present invention after the front baffle is removed in the initial state;

[0030] Figure 9 The embodiment of the present invention provides Figure 8 A schematic diagram of the enlarged structure of the middle part A;

[0031] Figure 10 The embodiment of the present invention provides Figure 8 A schematic diagram of the enlarged structure of the middle B part;

[0032] Figure 11 The embodiment of the present invention provides Figure 8 Front view in

[0033] Figure 12 The embodiment of the present invention provides Figure 8 Schematic diagram of the three-dimensional cross-sectional structure;

[0034] Figure 13 The embodiment of the present invention provides Figure 12 Schematic diagram of the enlarged structure of part C in the middle.

[0035] Description of reference numerals:

[0036] 1. Mounting plate; 101. Support shaft; 2. Swivel; 201. Opening; 202. Lower slide groove; 203. Upper slide groove; 3. Rear baffle; 301. Ring groove; 302. Arc slide; 4. Front baffle; 5. Bump; 6. Insert plate; 601. Lower slide plate; 6011. First through hole; 6012. Second through hole; 602. Upper slide plate; 7. Shaft; 8. Limiting member; 801. Arc plate; 8011. Through-arc groove; 802. Arc slide plate; 803. Abutment rod; 9. Blocking member; 901. Ring body; 9011. Avoidance hole; 902. Rotating ring; 903. Toggle plate; 10. Fixing block; 11. Return spring; 12. Support block; 13. Support rod; 14. Compression spring; 15. Safety rope. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1-13 As shown, an embodiment of the present invention provides a high-altitude construction safety protection device, including two rotatable swivels 2, a safety rope 15 is squeezed through the two swivels 2, a protrusion 5 is rotatably provided on the swivel 2 through a shaft 7, the outer side surface of the protrusion 5 located downstream of the shaft 7 is arc-shaped and protrudes from the outside of the swivel 2, a limit member 8 is elastically slidably provided inside the ring of the swivel 2, and a plug plate 6 is slidably inserted into the swivel 2 and elastically abuts against the end of the limit member 8;

[0039] When the end of the limiting member 8 elastically contacts the inserting plate 6, the limiting member 8 and the inner side surface of the protrusion 5 located downstream of the shaft 7 are offset so that the outer side surface of the protrusion 5 protruding from the outside of the rotating ring 2 can rotate into the rotating ring 2;

[0040] When the safety rope 15 accelerates and slides down, the swivel 2 is driven to rotate to generate centrifugal force, which drives the insert plate 6 to slide outward and separate from the end of the limit member 8, so that the limit member 8 slides elastically and abuts against the inner side surface of the protrusion 5 located downstream of the shaft body 7 so that the arc-shaped outer side surface of the protrusion 5 protruding from the outside of the swivel 2 can squeeze the safety rope 15 to decelerate and lock the safety rope 15.

[0041] The high-altitude construction safety protection device provided in this embodiment is used to provide safety protection for the hanging basket of high-altitude construction and prevent the hanging basket from falling. The words related to direction and position such as "front", "back", "left", and "right" involved in this embodiment are relative to the accompanying drawings, and "upstream" and "downstream" are relative to the rotation direction of the swivel 2. Specifically, the two swivels 2 are rotatably set on the mounting plate 1, and the mounting plate 1 is fixedly installed in a specific position. The safety rope 15 passes between the two swivels 2 and is squeezed by the outer peripheral surfaces of the two swivels 2. The squeezing force of the two swivels 2 on the safety rope 15 can be set as needed, as long as the friction between the safety rope 15 and the two swivels 2 can be used to drive the two swivels 2 to rotate when the safety rope 15 slides down. At least one of the two swivels 2 is rotatably provided with a protrusion 5, the outer side of the protrusion 5 abuts against the safety rope 15, and the protrusion 5 is used to squeeze and lock the safety rope 15, and the protrusion 5 can rotate synchronously with the swivel 2. The outer side of the protrusion 5 is the side away from the center of the swivel 2. The outer side of the protrusion 5 is arc-shaped and is divided into two parts by the shaft body 7 as the dividing line, one part is located upstream of the shaft body 7, and the other part is located downstream of the shaft body 7. In the initial state, the outer side of the protrusion 5 located downstream of the shaft body 7 protrudes from the outside of the swivel 2, and the distance from the outer side of the protrusion 5 located downstream of the shaft body 7 to the center of the swivel 2 gradually increases from upstream to downstream, so that when the protrusion 5 rotates synchronously with the swivel 2, the squeezing force of the outer side of the protrusion 5 protruding from the outside of the swivel 2 on the safety rope 15 gradually increases, thereby enabling the sliding safety rope 15 to gradually slow down until it is completely locked. The protrusion 5 has an unlocked state in which it can rotate and a locked state in which it cannot rotate. The protrusion 5 only has the function of locking the safety rope 15 when it is in the locked state. When the protrusion 5 is in the unlocked state, when the protrusion 5 abuts against the safety rope 15, the safety rope 15 can push the protrusion 5 to rotate, so that the protrusion 5 can smoothly pass over the safety rope 15 without generating a large squeezing force on the safety rope 15, thereby preventing the safety rope 15 from being in a high squeezing force state for a long time.The locking member 8 is locked and unlocked by the locking plate 6, and the locking member 8 is locked. When the safety rope 15 and the outer side surface of the protrusion 5 at the downstream of the shaft body 7 are continuously abutted, the protrusion 5 can continuously increase the squeezing force on the safety rope 15, so that the safety rope 15 is continuously decelerated until it is completely locked. The centrifugal force of the swivel 2 is greater than that of the plate 6, so that the plate 6 can slide to the outside of the swivel 2 until the plate 6 is separated from the end of the limiter 8, so that the protrusion 5 enters the locked state; and when the swivel 2 is running smoothly, the sliding speed of the safety rope 15 is slow and smooth, so that the centrifugal force of the swivel 2 is less than the sliding resistance of the plate 6, and the plate 6 will not slide to the outside of the swivel 2, and the plate 6 and the end of the limiter 8 are always in contact, so that the protrusion 5 is always kept in the unlocked state, so as to greatly reduce the squeezing force on the safety rope 15 during stable operation, thereby reducing damage.In the prior art, the deceleration and locking of the safety rope are achieved by relying on the squeezing force of the two second grinding wheels that are relatively arranged and staggered on the safety rope, and the magnitude of the squeezing force generated by the two second grinding wheels on the safety rope comes from the magnitude of the torque generated on the two first grinding wheels when the safety rope accelerates and slides down, and the magnitude of the torque of the two first grinding wheels comes from the magnitude of the squeezing force of the two first grinding wheels on the safety rope. Obviously, in order to achieve the two second grinding wheels locking the safety rope, the two second grinding wheels must have a sufficiently large squeezing force on the safety rope. To this end, the two first grinding wheels must have a sufficiently large squeezing force on the safety rope, and regardless of whether the hanging basket falls or not, the safety rope always needs to withstand the high squeezing force of the two first grinding wheels. Long-term use in a working environment with high squeezing pressure will undoubtedly greatly increase the damage rate of the safety rope, thereby greatly reducing the service life of the safety rope. Based on this, how to reduce the damage rate of the safety rope on the basis of achieving deceleration and locking of the safety rope is a technical problem that needs to be solved urgently.

[0042] In this embodiment, a protrusion 5 is rotatably set on the swivel 2, and the outer side surface of the protrusion 5 located downstream of the shaft 7 is arc-shaped and protrudes from the outside of the swivel 2, and the protrusion 5 can be locked by the limit member 8. When the limit member 8 is in different positions, the protrusion 5 can be locked and unlocked, and the position change of the limit member 8 depends on whether the limit member 8 is in contact with the plug plate 6. When the safety rope 15 descends and drives the swivel 2 and the protrusion 5 to rotate, the arc outer surface of the protrusion 5 protruding from the outside of the swivel 2 continuously squeezes the safety rope 15. The arc design makes it possible to When the safety rope 15 is in contact with the arc outer side of the protrusion 5 protruding from the outside of the swivel 2, the safety rope 15 is squeezed and pushed to rotate the arc outer side of the protrusion 5 protruding from the outside of the swivel 2 so that the protrusion 5 will not squeeze and lock the safety rope 15. In this process, the squeezing force applied to the safety rope 15 is the squeezing force applied to the safety rope 15 by the two swivels 2 on the safety rope 15, and the squeezing force applied to the safety rope 15 is small (it is only necessary to drive the swivel 2 to rotate when the safety rope 15 slides down), so as to reduce the damage of the safety rope 15 and improve the service life of the safety rope 15. It can be seen that the present invention can not only lock the protrusion 5 when the hanging basket falls so that the protrusion 5 slows down and locks the safety rope 15, but also unlock the protrusion 5 when the hanging basket does not fall and runs smoothly so that the safety rope 15 will not be squeezed by the protrusion 5 and decelerated and locked, so that the squeezing force on the safety rope 15 is kept at a small value, thereby greatly reducing the damage speed of the safety rope 15, which can effectively solve the shortcomings of the prior art.

[0043] In this embodiment, the position-limiting member 8 includes a curved plate 801 and two abutting rods 803. The outer curved surface of the curved plate 801 matches and abuts the inner side surface of the protrusion 5. One end of the two abutting rods 803 is fixedly connected to the curved plate 801, and the other end is in sliding abutment with the inserting plate 6. Specifically, the abutment between the outer curved surface of the curved plate 801 and the inner side surface of the bottom of the protrusion 5 realizes the abutment between the position-limiting member 8 and the inner side surface of the protrusion 5, and the abutment between the ends of the two abutting rods 803 and the inserting plate 6 realizes the abutment between the position-limiting member 8 and the inserting plate 6. The inner side of the projection 5 is curved and can completely fit with the outer curved surface of the curved plate 801. The sliding stopper 8 can change the area of contact between the outer curved surface of the curved plate 801 and the inner side of the projection 5. When the ends of the two abutting rods 803 abut the inserting plate 6, the outer curved surface of the curved plate 801 abuts the inner side of the projection 5 located upstream of the shaft 7, thereby unlocking the projection 5. When the ends of the two abutting rods 803 are separated from the inserting plate 6, the stopper 8 slides so that the outer curved surface of the curved plate 801 abuts the entire inner side of the projection 5, thereby locking the projection 5. The ends of the two abutting rods 803 that abut the inserting plate 6 are curved, so that the inserting plate 6 can slide toward the outside of the swivel 2 when the centrifugal force of the swivel 2 reaches a specific value.

[0044] Furthermore, a curved slide 802 is fixedly mounted on both the front and rear sides of the curved plate 801. The curved slide 802 matches the curvature of the curved plate 801 and is concentrically arranged. The front side of the swivel 2 is detachably mounted with a front baffle 4 via multiple screws, and the rear side is detachably mounted with a rear baffle 3 via multiple screws. The two curved slides 802 are slidably connected to the front baffle 4 and the rear baffle 3 in a one-to-one correspondence. The outer circumferences of the front baffle 4 and the rear baffle 3 extend to the outside of the swivel 2. Specifically, a curved slide 302 is symmetrically provided on the opposing surfaces of the front baffle 4 and the rear baffle 3. The two curved slides 302 are slidably engaged with the two curved slides 802 in a one-to-one correspondence. The sliding engagement of the two curved slides 802 with the two curved slides 302 provides a sliding guide for the limiter 8. When the ends of the two abutment rods 803 are separated from the inserting plate 6, the limiter 8 slides along the two curved slides 302. At the same time, the safety rope 15 is located between the front baffle 4 and the rear baffle 3. Based on the outer peripheral surfaces of the front baffle 4 and the rear baffle 3 extending to the outside of the swivel 2, the front baffle 4 and the rear baffle 3 can limit the safety rope 15 and prevent the safety rope 15 from separating from the swivel 2. The mounting plate 1 is provided with two support shafts 101 that are plugged into the two swivels 2 in a one-to-one correspondence. The support shafts 101 are fixedly connected or rotatably connected to the mounting plate 1. The support shafts 101 are rotatably plugged into the front baffle 4 and the rear baffle 3.

[0045] In this embodiment, two support blocks 12 arranged opposite each other are fixedly mounted on the inner wall of the swivel 2. A support rod 13 is fixedly mounted on each of the support blocks 2. The support rod 13 is curved, and its curvature matches the sliding direction of the stopper 8. The two support rods 13 are slidably engaged with the curved plate 801. Compression springs 14 are sleeved on each of the support rods 13, and the compression springs 14 are located between the support blocks 12 and the curved plate 801. Specifically, the support rods 13 support the compression springs 14 to prevent them from deforming. The compressive force of the compression springs 14 is utilized to push the stopper 8 to slide when the stopper 8 is separated from the inserting plate 6.

[0046] Among them, the inner wall of the swivel 2 is fixedly installed with a fixing block 10 corresponding to the two support rods 13. When the two support rods 13 are separated from the insert plate 6, the end portions of the two support rods 13 are in one-to-one contact with the two fixing blocks 10 under the elastic force of the compression spring 14 to achieve the limitation of the limiter 8. At this time, the outer arc surface of the arc plate 801 is completely fitted with the inner surface of the protrusion 5 to lock the protrusion 5.

[0047] In this embodiment, the outer side surface of the protrusion 5 located upstream of the shaft 7 smoothly transitions to the outer peripheral surface of the swivel 2, and the inner side surface of the protrusion 5 is an arc whose curvature is adapted to the curvature of the outer curved surface of the arc plate 801. The outer curved surface of the arc plate 801 is always in contact with the inner side surface of the protrusion 5 located upstream of the shaft 7 so that when the safety rope 15 is in contact with the outer side surface of the protrusion 5 located upstream of the shaft 7, the protrusion 5 will not rotate toward the inside of the swivel 2.

[0048] In this embodiment, an opening 201 is formed on the swivel 2, and the shaft 7 is fixedly inserted into the opening 201. The shaft 7 rotates and passes through the protrusion 5. A torsion spring (not shown in the figure) is installed between the shaft 7 and the protrusion 5. The function of the torsion spring is to provide a torsional force toward the outside of the swivel 2 for the protrusion 5. The configuration of the torsion spring is conventional and will not be described in detail. When the end of the limiter 8 elastically abuts the plug plate 6, the torsion force of the torsion spring causes the safety rope 15 to abut the outer side surface of the protrusion 5 located downstream of the shaft 7, and an elastic squeezing force is generated between the two, so that the safety rope 15 can drive the corresponding swivel 2 to rotate. Specifically, the torsion force provided by the torsion spring to the protrusion 5 can generate friction between the outer side surface of the protrusion 5 located downstream of the shaft 7 and the safety rope 15 when the protrusion 5 rotates toward the inside of the swivel 2, so that the safety rope 15 can still drive the swivel 2 to rotate when it abuts the protrusion 5. At the same time, under the action of the torsion spring, the protrusion 5 can be automatically reset. When the protrusion 5 is reset, the limiter 8 plays a limiting role on the protrusion 5. At this time, the outer side surface of the protrusion 5 located upstream of the shaft body 7 forms a complete arc surface with the outer peripheral surface of the swivel 2, and the outer side surface of the protrusion 5 located downstream of the shaft body 7 protrudes from the outer peripheral surface of the swivel 2 (such as Figure 8 and 12 shown).

[0049] Among them, the two side surfaces of the opening 201 in the rotation direction of the ring 2 and the left side and right side surfaces of the protrusion 5 (the left side and right side surfaces are the sides located in the rotation direction of the ring 2) are all arc-shaped, and the two side surfaces of the opening 201 in the rotation direction of the ring 2 are respectively slidably fitted with the left side and right side surfaces of the protrusion 5 (such as Figure 12 With this structural design, the projection 5 can be in close contact with the outer peripheral surface of the rotating ring 2 during rotation, thereby preventing a gap from being generated between the projection 5 and the inner wall of the opening 201.

[0050] The upper and lower slides 603 are connected to each other so as to prevent the slide 6 from being disengaged from the swivel 2 when the upper and lower slides 603 are in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being in a state of being

[0051] Since the safety rope 15 will inevitably wear out to varying degrees during long-term use, the location where the safety rope 15 is most worn will become thinner and irregular, which can easily cause the safety rope 15 to break when continued use, thereby posing a great safety hazard to high-altitude construction. The existing technology does not have a function that can automatically lock the safety rope 15 when the safety rope 15 is severely worn, and it is impossible to take preventive measures.

[0052] To this end, this embodiment further includes a stopper 9 that is rotatably disposed within the swivel 2. During the process of the protrusion 5 located on the outer side of the downstream side of the shaft 7 rotating toward the inner side of the swivel 2, the bottom of the protrusion 5 (the bottom of the protrusion 5 refers to the inner side of the protrusion 5) slides against the stopper 9 to promote the rotation of the stopper 9. Specifically, the stopper 9 includes two symmetrically arranged rotating rings 902. An annular groove 301 is symmetrically provided on the opposing surfaces of the front baffle 4 and the rear baffle 3. The two rotating rings 902 are rotatably inserted into the two annular grooves 301 in a one-to-one correspondence. The circumferential surface of the rotating ring 902 is pressed tightly against the inner wall of the annular groove 301 to provide resistance to the rotating ring 902. When the bottom of the protrusion 5 is not in contact with the stopper 9, the rotating ring 902 will not shake or rotate.

[0053] Among them, the blocking member 9 is provided with a plurality of avoidance holes 9011 arranged at equal intervals in the circumferential direction. When the safety rope 15 pushes the protrusion 5 to rotate to a specific angle during the sliding process (the protrusion 5 rotates to a specific angle means that the outer surface of the protrusion 5 located downstream of the shaft body 7 can be completely rotated into the opening 201, and the angle of rotation of the protrusion 5 is constant at this time), the plurality of avoidance holes 9011 correspond to the bottom of the plug plate 6 in sequence. At this time, when the plug plate 6 slides toward the inside of the swivel 2, the bottom of the plug plate 6 can be inserted into the avoidance hole 9011, and the end of the plug plate 6 protrudes from the outside of the swivel 2.

[0054] When the safety rope 15 pushes the protrusion 5 to rotate at an angle less than a specific angle during the downward movement, the multiple avoidance holes 9011 are staggered with the plug plate 6 so that the bottom of the plug plate 6 abuts against the blocking member 9. When the plug plate 6 abuts against the safety rope 15, its end squeezes and locks the safety rope 15.

[0055] Specifically, the blocking member 9 includes a ring body 901. The function of the ring body 901 is to prevent the plug plate 6 from sliding toward the inside of the swivel 2. Since the end of the plug plate 6 protrudes from the outside of the swivel 2, the end of the plug plate 6 abuts against the safety rope 15 when the plug plate 6 rotates synchronously with the swivel 2. When the plug plate 6 is able to slide toward the inside of the swivel 2, the safety rope 15 pushes the plug plate 6 to slide toward the inside of the swivel 2 so that the safety rope 15 passes over the plug plate 6; when the outer side surface of the ring body 901 abuts against the bottom of the plug plate 6, the plug plate 6 cannot slide toward the inside of the swivel 2. At this time, the end of the plug plate 6 remains in a protruding state. When the safety rope 15 abuts against the end of the plug plate 6, the plug plate 6 continuously squeezes the safety rope 15 to lock the safety rope 15. Among them, two rotating rings 902 are integrally formed and arranged on the front and rear sides of the ring body 901, and a plurality of avoidance holes 9011 are penetrated and arranged on the ring body 901. A plurality of toggle plates 903 arranged at equal intervals in the circumferential direction are fixedly installed on the outer peripheral surface of the ring body 901. The plurality of toggle plates 903 and the plurality of avoidance holes 9011 are alternately arranged in a one-to-one correspondence. The plurality of toggle plates 903 alternately slide and abut against the bottom of the rotating protrusion 5. Because the protrusion 5 is in the unlocked state, the safety rope 15 abuts against it and pushes the protrusion 5 to rotate, so that the rotating protrusion 5 can push the toggle plate 903 to rotate, and the toggle plate 903 drives the ring body 901 to rotate synchronously. When the angles of rotation are all specific angles, the angles of rotation of the ring body 901 are the same each time, and the angle difference between the multiple avoidance holes 9011 is the same as the rotation angle of the ring body 901. In the initial state, one of the avoidance holes 9011 corresponds to the bottom of the plugging plate 6. At this time, the plugging plate 6 can be inserted into the avoidance hole 9011, so that the plugging plate 6 cannot lock the safety rope 15. That is, when the diameter of the safety rope 15 is maintained at a certain value, the protrusion 5 can always be pushed to rotate to a specific angle, and then when the plugging plate 6 abuts against the safety rope 15, it can always correspond to the avoidance hole 9011 and slide toward the inside of the swivel 2, so that the safety rope 15 can slide down smoothly without being locked. However, as the degree of wear of the safety rope 15 increases, the diameter of the worn area gradually decreases. When the safety rope 15 is worn to a certain extent, the thinner safety rope 15 abuts against the protrusion 5, and the angle of rotation of the protrusion 5 decreases, making it impossible to rotate to a specific angle. At this time, the rotation angle of the toggle plate 903 and the ring body 901 changes, thereby causing the avoidance hole 9011 to stagger with the bottom plate of the plug plate 6. At this time, the outer side of the ring body 901 abuts and cooperates with the bottom of the plug plate 6. When the end of the plug plate 6 abuts the safety rope 15, the ring body 901 blocks the plug plate 6, preventing it from sliding toward the inside of the swivel 2. The end of the plug plate 6 will continuously increase the squeezing force on the safety rope 15, causing the safety rope 15 to continuously slow down until it is locked. As can be seen from this, the present invention can automatically lock the safety rope 15 after the safety rope 15 has worn to a certain extent, ensuring construction safety and preventing accidents before they occur.

[0056] In this embodiment, the end of the safety rope 15 is the end of the upper slide 602 , and the end of the upper slide 602 is arc-shaped so that the inserting plate 6 can first decelerate and then lock the safety rope 15 .

[0057] The toggle plates 903 are staggered with the two fixed blocks 10, the two support blocks 12, and the two support rods 13. The inner curved surface of the curved plate 801 is provided with a through-curved slot 8011, through which the tops of the multiple toggle plates 903 pass in sequence, so that the curved plates 801 do not hinder the rotation of the toggle plates 903. A first through-hole 601 is provided on the lower slide plate 601, through which the multiple toggle plates 903 pass in sequence, so that the inserting plate 6 does not hinder the rotation of the toggle plates 903.

[0058] Furthermore, two second through holes 6012 corresponding to the two support rods 13 are provided on the lower slide plate 601. When the inserting plate 6 continuously slides toward the outside of the swivel 2 under the action of the centrifugal force of the swivel 2, the two second through holes 6012 respectively correspond to the ends of the two support rods 13. At this time, the two support rods 13 pass through the inserting plate 6 under the elastic force of the compression spring 14 and abut against the two fixing blocks 10, so as to realize the locking of the arc plate 801 on the protrusion 5.

[0059] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A high-altitude construction safety protection device, comprising two rotatably arranged swivels (2), with a safety rope (15) squeezed through between the two swivels (2), characterized in that: The rotating ring (2) is provided with a protrusion (5) which is rotatable via a shaft (7); the outer side surface of the protrusion (5) located downstream of the shaft (7) is arc-shaped and protrudes from the outside of the rotating ring (2); a limit piece (8) is elastically slidably provided inside the rotating ring (2); and a plug plate (6) is slidably inserted into the rotating ring (2) and elastically abuts against the end of the limit piece (8); When the end of the limiting member (8) elastically contacts the insert plate (6), the limiting member (8) and the inner side surface of the protrusion (5) located downstream of the shaft (7) are offset so that the outer side surface of the protrusion (5) protruding from the outside of the rotating ring (2) can be rotated into the rotating ring (2); When the safety rope (15) accelerates downward, the rotating ring (2) is driven to rotate and generate centrifugal force to drive the inserting plate (6) to slide outward and separate from the end of the limiting member (8), so that the limiting member (8) elastically slides and abuts against the inner side surface of the protrusion (5) located downstream of the shaft body (7), so that the arc-shaped outer side surface of the protrusion (5) protruding outside the rotating ring (2) can squeeze the safety rope (15) to decelerate and lock the safety rope (15).

2. The high-altitude construction safety protection device according to claim 1 is characterized in that: The limiting member (8) comprises an arc-shaped plate (801) and two abutting rods (803); the outer arc surface of the arc-shaped plate (801) is adapted to and abuts against the inner side surface of the protrusion (5); one end of the two abutting rods (803) is fixedly connected to the arc-shaped plate (801), and the other end is in sliding abutment with the plug plate (6).

3. The high-altitude construction safety protection device according to claim 2 is characterized in that: A curved slide plate (802) is fixedly mounted on the front side and the rear side of the curved plate (801); the curved slide plate (802) is adapted to the curvature of the curved plate (801) and is arranged concentrically; a front baffle plate (4) is detachably mounted on the front side of the rotating ring (2); and a rear baffle plate (3) is detachably mounted on the rear side; the two curved slide plates (802) are slidably connected to the front baffle plate (4) and the rear baffle plate (3) in a one-to-one correspondence; and the outer peripheral surfaces of the front baffle plate (4) and the rear baffle plate (3) extend to the outside of the rotating ring (2).

4. The high-altitude construction safety protection device according to claim 2 is characterized in that: Two support blocks (12) arranged opposite to each other are fixedly mounted on the inner wall of the rotating ring (2), a support rod (13) is fixedly mounted on each of the two support blocks (12), the two support rods (13) are slidably plugged into the arc plate (801), and a compression spring (14) is sleeved on each of the two support rods (13), and the compression spring (14) is located between the support block (12) and the arc plate (801).

5. The high-altitude construction safety protection device according to claim 2 is characterized in that: The outer side surface of the protrusion (5) located upstream of the shaft (7) smoothly transitions to the outer peripheral surface of the rotating ring (2), the inner side surface of the protrusion (5) is an arc whose curvature matches the curvature of the outer curved surface of the arc plate (801), and the outer curved surface of the arc plate (801) always abuts against the inner side surface of the protrusion (5) located upstream of the shaft (7) so that when the safety rope (15) abuts against the outer side surface of the protrusion (5) located upstream of the shaft (7), the protrusion (5) will not rotate toward the inside of the rotating ring (2).

6. The high-altitude construction safety protection device according to claim 1 is characterized in that: The rotating ring (2) is provided with an opening (201), the shaft (7) is fixedly inserted in the opening (201), the shaft (7) rotates and passes through the protrusion (5), and a torsion spring is installed between the protrusion (5). When the end of the limit member (8) elastically contacts the plug plate (6), the torsion force of the torsion spring causes the safety rope (15) to contact the outer side surface of the protrusion (5) located downstream of the shaft (7), and an elastic squeezing force is generated between the two so that the safety rope (15) can drive the corresponding rotating ring (2) to rotate.

7. The high-altitude construction safety protection device according to claim 6, characterized in that: The two side surfaces of the opening (201) in the rotation direction of the rotating ring (2) and the left and right sides of the protrusion (5) are all arc-shaped, and the two side surfaces of the opening (201) in the rotation direction of the rotating ring (2) are respectively slidably fitted with the left and right sides of the protrusion (5).

8. The high-altitude construction safety protection device according to claim 6, characterized in that: It also includes rotating a blocking member (9) arranged inside the rotating ring (2), and during the process of the protrusion (5) being located on the outer side of the downstream side of the shaft body (7) and rotating toward the inner side of the rotating ring (2), the bottom of the protrusion (5) slides and abuts against the blocking member (9) to push the blocking member (9) to rotate.

9. The high-altitude construction safety protection device according to claim 8, characterized in that: The blocking member (9) is provided with a plurality of avoidance holes (9011) arranged at equal intervals in the circumferential direction. When the safety rope (15) pushes the protrusion (5) to rotate to a specific angle during the downward movement, the plurality of avoidance holes (9011) correspond to the bottom of the plug plate (6) in sequence. The end of the plug plate (6) protrudes from the outside of the rotating ring (2). The rotation of the protrusion (5) to the specific angle means that the outer side surface of the protrusion (5) located downstream of the shaft (7) can be completely rotated into the opening (201). At this time, the angle of rotation of the protrusion (5) is determined.

10. The high-altitude construction safety protection device according to claim 9, characterized in that: When the angle of rotation of the protrusion (5) is less than a specific angle during the downward movement of the safety rope (15), the plurality of avoidance holes (9011) are staggered with the inserting plate (6) so that the bottom of the inserting plate (6) abuts against the blocking member (9). When the inserting plate (6) abuts against the safety rope (15), the end portion thereof squeezes and locks the safety rope (15).

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