A vertical lifeline device

Abstract

This invention discloses a vertical lifeline device, comprising an integrated buffer upper support, a cable connector, a steel cable, a bottom support, a tensioning device, and a rope grabber. Both the integrated buffer upper and bottom supports securely hold the ladder using a back-mounted universal clamp. An integrally formed fixing plate on the support provides safety belt attachment points, and the combined effect of a buffer and stress-relief structure effectively mitigates the impact of a fall. The steel cable is fixedly connected by the cable connector, and the tensioning device provides a stable preload to the cable. It also includes a collapsible pad and a tension indicator to ensure reliable tension. The rope grabber also has locking and buffer / stress-relief functions, allowing for quick locking and protection during a fall. This system is easy to install, highly versatile, and through multiple protective structures, enhances the fall prevention and safety assurance capabilities of vertical ladder climbing operations.

Description

Technical Field

[0001] This invention relates to the field of safety protection device technology, specifically to a vertical lifeline device. Background Technology

[0002] In high-altitude work scenarios, vertical ladders are commonly used facilities for workers to go up and down, but the risk of falling is high during the climbing process. Currently available vertical ladder fall protection equipment generally suffers from insufficient overall stability and poor safety, and is also difficult to adapt to different ladder specifications. Existing protection systems have limited buffering capacity, failing to effectively reduce the impact load from falls, and the steel cables are prone to swaying and wear. Overall, the stability and reliability of the protection are poor, failing to provide sufficient safety for workers.

[0003] Therefore, high-altitude work scenarios require a more practical and reliable safety protection device. Summary of the Invention

[0004] The purpose of this invention is to provide a safe, reliable, stable lifeline system with a buffering and stress-relief function.

[0005] The technical solution of this invention is as follows:

[0006] A vertical lifeline device includes an integrated buffer upper support, a first fixing plate, a first buffer stress relief structure, a steel cable connector, a steel cable, a bottom support, a second fixing plate, a tensioning device, and a rope gripper.

[0007] The integrated buffer upper bracket is fixedly installed on the top of the ladder. The first fixing plate is integrally formed with the integrated buffer upper bracket and is perpendicular to the integrated buffer upper bracket. The first fixing plate is provided with a safety belt hanging point, which is a hole opened on the first fixing plate.

[0008] The lower part of the first fixed plate is integrally formed with the first buffer and stress relief structure, and the lower part of the first buffer and stress relief structure is fixedly connected to the steel cable connector; the steel cable connector includes a connector and a hydraulic steel cable sleeve, the upper end of the steel cable is inserted and fixed inside the hydraulic steel cable sleeve; the lower end of the steel cable is fixedly connected to the tensioning device; the rope gripper is sleeved on the outside of the steel cable and can slide along the axial direction of the steel cable.

[0009] The integrated buffer upper bracket is fixedly connected to two back universal clamps. The two back universal clamps are used in conjunction with the integrated buffer upper bracket and are respectively clamped on two adjacent steps at the top of the ladder. The integrated buffer upper bracket is also provided with an installation direction indicator groove.

[0010] The bottom bracket is fixedly installed at the bottom of the ladder. A second fixing plate extends vertically from the bottom bracket and is integrally formed with the bottom bracket. Two back universal clamps are fixedly connected to the bottom bracket at the top and bottom. The two back universal clamps are used in conjunction with the bottom bracket and are respectively clamped on two adjacent steps at the bottom of the ladder. The bottom bracket is also provided with an installation direction indicator groove.

[0011] Preferably, the tensioning device includes a screw, a tensioner body, a pretensioning spring, and a pretension force adjusting nut;

[0012] One end of the screw is fixedly connected to the tensioner body, and the other end of the screw axially passes through the second fixing plate of the bottom bracket; the pre-tensioning spring is sleeved on the outer circumference of the screw, one end of the pre-tensioning spring abuts against the top end face of the second fixing plate, and the other end abuts against the end face of the tensioner body; the pre-tension force adjusting nut is threadedly connected to the end of the screw that passes through the second fixing plate, and the end face of the pre-tension force adjusting nut abuts against the lower end face of the second fixing plate; the tensioner body is fixedly connected to the lower end of the steel cable.

[0013] Preferably, the tensioning device further includes a collapsible pad and a tension indicator plate;

[0014] The collapsible shim and tension indicator are located between the tensioner body and the pre-tension spring, and closer to the tensioner body; the lower part of the collapsible shim abuts against the pre-tension spring, and the upper part of the tension indicator abuts against the tensioner body.

[0015] Preferably, the rope gripper includes a housing, and an opening and closing cover is fitted on the outside of the housing; an opening and closing cover torsion spring is connected between the opening and closing cover and the housing; an opening and closing locking spring is hinged on the opening and closing cover, and an opening and closing cover switch is hinged on the opening and closing locking spring; a guide wheel is rotatably connected to the top of the opening and closing cover, and the guide wheel is in contact with the steel cable.

[0016] Preferably, the rope grabber has a locking block inside, which is integrally formed with the second buffer relief structure; the locking block is hinged with a locking coil spring; a universal connecting ring is fixedly connected to the outside of the second buffer relief structure; the locking block can be frictionally locked with the steel cable under the drive of the locking coil spring to achieve fall prevention.

[0017] Preferably, the locking block has a protrusion or groove at one end near the steel cable to increase the friction between the locking block and the steel cable.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention improves fall protection safety through two buffer and stress relief structures: an integrated upper support and a rope gripper. The tensioning device can stably maintain the state of the steel cable and reduce component wear. The universal clamp on the back is easy to install and securely fixed. The overall structure of this invention is stable and reliable, with good protective performance, which can improve the safety level of vertical ladder climbing operations.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 For the present invention Figure 1 Enlarged structural diagram at point B;

[0024] Figure 4 For the present invention Figure 1 Enlarged structural diagram at point C;

[0025] Figure 5 This is a schematic diagram of the rear structure of the main body of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point D;

[0027] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point E;

[0028] Figure 8 For the present invention Figure 5 Enlarged structural diagram at point F;

[0029] Figure 9 This is a schematic diagram of the exploded structure of the rope gripper of the present invention;

[0030] In the diagram: 1-Integrated buffer upper bracket; 101-First fixing plate; 102-Back universal clamp; 103-Seat belt attachment point; 104-First buffer relief structure; 105-Installation direction indicator groove; 106-Connector; 107-Hydraulic steel cable sleeve; 2-Steel cable connector; 3-Steel cable; 4-Bottom bracket; 401-Second fixing plate; 402-Installation direction indicator groove; 5-Tensioning device; 501-Tensioner body; 502-Screw; 5 03-Pretension spring; 504-Pretension force adjusting nut; 505-Collapsible washer; 506-Tension indicator; 507-Steel cable installation observation hole; 6-Rope gripper; 601-Guide wheel; 602-Universal connecting ring; 603-Locking block; 604-Second buffer relief structure; 605-Locking coil spring; 606-Housing; 607-Opening and closing cover switch; 608-Opening and closing cover torsion spring; 609-Opening and closing locking spring; 610-Opening and closing cover; 7-Ladder. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, this embodiment discloses a vertical lifeline device suitable for installation and use on a vertical ladder 7. It consists of an integrated buffer upper bracket 1, a first fixing plate 101, a first buffer relief structure 104, a steel cable connector 2, a steel cable 3, a bottom bracket 4, a second fixing plate 401, a tensioning device 5, and a rope grabber 6, which meets the fall protection requirements during ladder climbing.

[0033] The integrated buffer support 1 is fixedly installed at the top of the ladder 7. The first fixing plate 101 is integrally formed with the integrated buffer support 1 and is perpendicular to each other. The holes on the first fixing plate 101 are safety belt attachment points 103, which provide a reliable temporary protective attachment point for climbers when disconnecting the rope grabber 6 at the top of the ladder. The lower part of the first fixing plate 101 is integrally formed with a first buffer relief structure 104. The first buffer relief structure 104 is made of metal. When the impact force of a fall exceeds 6kN, the first buffer relief structure 104 can dissipate the force through its own deformation, avoiding damage to the ladder, steel cable and support body due to excessive impact force.

[0034] The lower part of the first buffer relief structure 104 is fixedly connected to the steel cable connector 2. The steel cable connector 2 includes a connector 106 and a hydraulic steel cable sleeve 107. The upper end of the steel cable 3 passes through and is fixed inside the hydraulic steel cable sleeve 107. The static fixing tension of the steel cable connector 2 on the steel cable 3 exceeds 12kN, thereby ensuring the stability of the connection at the upper end of the steel cable. A back universal clamp 102 is fixedly connected to each of the upper and lower ends of the buffer integrated upper bracket 1. The two back universal clamps 102 are used in conjunction with the buffer integrated upper bracket 1 and are respectively clamped on the two adjacent steps at the top of the ladder 7, making the installation of the buffer integrated upper bracket 1 more secure. At the same time, the buffer integrated upper bracket 1 is also provided with an installation direction indicator groove 105, which can clearly indicate the installation position and effectively avoid the problem of reverse installation during installation.

[0035] The bottom bracket 4 is fixedly installed at the bottom of the ladder 7, and the bottom bracket 4 extends vertically in one piece to form the second fixing plate 401. A back universal clamp 102 is also fixedly connected to each of the upper and lower ends of the bottom bracket 4. The two back universal clamps 102 are used in conjunction with the bottom bracket 4 and clamp onto two adjacent steps at the bottom of the ladder 7, thereby achieving a stable installation of the bottom bracket. The bottom bracket 4 also has an installation direction indicator groove 402 to ensure accurate installation orientation.

[0036] The lower end of the steel cable 3 is fixedly connected to the tensioning device 5. The tensioning device 5 can provide a stable pre-tension force for the steel cable 3, avoid damage caused by friction between the steel cable 3 and the ladder due to shaking, and keep the steel cable 3 in a vertical state so that the horizontal swing of the steel cable 3 does not exceed 5 cm.

[0037] The tensioning device 5 consists of a screw 502, a tensioner body 501, a pre-tension spring 503, and a pre-tension force adjusting nut 504. One end of the screw 502 is fixedly connected to the tensioner body 501, and the other end axially passes through the second fixing plate 401 of the bottom bracket 4. The pre-tension spring 503 is sleeved on the outer circumference of the screw 502, with one end abutting against the top end face of the second fixing plate 401 and the other end abutting against the end face of the tensioner body 501. The pre-tension force adjusting nut 504 is threadedly connected to the end of the screw 502 that passes through the second fixing plate 401, and the end face of the pre-tension force adjusting nut 504 abuts against the lower end face of the second fixing plate 401. By screwing the pre-tension force adjusting nut 504, the pre-tension spring 503 can be compressed and the tensioner body 501 can be displaced, thereby completing the tensioning operation of the steel cable 3.

[0038] In addition, the tensioning device 5 is equipped with a collapsible washer 505 and a tension indicator 506. Both the collapsible washer 505 and the tension indicator 506 are located between the tensioner body 501 and the pre-tension spring 503, and are close to the side of the tensioner body 501. The lower part of the collapsible washer 505 abuts against the pre-tension spring 503, and the upper part of the tension indicator 506 abuts against the tensioner body 501. When the pre-tension force exceeds 2kN, the collapsible washer 505 will deform, and the force of the pre-tension spring 503 will push against the tension indicator 506, preventing it from rotating, thus providing a visual indication of the tension being in place. Furthermore, the tensioner body 501 is equipped with a set screw for fixing the steel cable. The tensioner body 501 also has a steel cable installation observation hole 507 for easy observation and positioning of the lower end of the steel cable 3 during installation, improving installation efficiency.

[0039] The rope gripper 6 is fitted around the outside of the steel cable 3 and can slide up and down along the axial direction of the steel cable 3, always moving synchronously with the climber. The rope gripper 6 includes a housing 606, with an opening / closing cover 610 covering the outside of the housing 606. An opening / closing cover torsion spring 608 connects the opening / closing cover 610 to the housing 606. An opening / closing locking spring 609 is also hinged to the opening / closing locking spring 609, and an opening / closing cover switch 607 is hinged to the opening / closing locking spring 609. The opening / closing cover switch 607 is located outside the housing and can be pressed. A guide wheel 601 is rotatably connected to the top of the opening / closing cover 610. The guide wheel 601 contacts the steel cable 3 and works in coordination with the rotation of the steel cable, while simultaneously reducing the sliding friction resistance of the rope gripper 6.

[0040] The rope gripper 6 has a locking block 603 inside, which is integrally formed with the second buffer relief structure 604, which is made of metal. The locking block 603 is hinged with a locking coil spring 605. The outer side of the second buffer relief structure 604 is fixedly connected to a universal connecting ring 602, which is used to connect with the climber's safety belt. The end of the locking block 603 near the steel cable 3 has a protrusion or groove to increase the friction between the locking block 603 and the steel cable 3.

[0041] In the absence of tension, the locking coil spring 605 drives the locking block 603 to maintain its position against the steel cable 3 with a preload of about 0.3 kg. When personnel are climbing normally and hanging safety belts, the weight of the rope grabber 6 is greater than 0.3 kg. The locking block 603 maintains a gap with the steel cable 3 and does not generate friction, thus not affecting normal climbing operations.

[0042] When a person suddenly falls and the falling speed reaches 2m / s, the upward traction force at the universal joint 602 disappears. The locking spring 605 drives the locking block 603 to deflect rapidly toward the steel cable 3 and tightly rub against the surface of the steel cable to lock it. The person's own weight forms a lever fulcrum through the universal joint 602 and the second buffer relief structure 604, further increasing the friction between the locking block 603 and the steel cable 3, thus achieving instantaneous cessation of the fall.

[0043] When the impact force of a fall exceeds 6kN, the second buffer relief structure 604, made of metal, completes the force relief through its own yield deformation, controlling the impact force acting on the human body within the safe range of 6kN. This reduces the damage to the human muscles and bones when workers fall, while also ensuring the safety of workers' lives. When assembling or disassembling the rope gripper 6, pulling out the opening and closing cover switch 607 can unlock the limit switch. The opening and closing cover torsion spring 608 drives the housing 606 to open, facilitating the insertion or removal of the steel cable 3. After releasing the switch, the opening and closing locking spring 609 drives the opening and closing cover switch 607 to automatically return to the locking position, and the housing 606 closes and latches onto the outside of the opening and closing cover 610, effectively preventing the steel cable 3 from accidentally coming out.

[0044] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A vertical lifeline device, characterized by It includes an integrated buffer upper bracket (1), a first fixing plate (101), a first buffer stress relief structure (104), a steel cable connector (2), a steel cable (3), a bottom bracket (4), a second fixing plate (401), a tensioning device (5), and a rope gripper (6). The buffer integrated upper bracket (1) is fixedly installed on the top of the ladder (7). The first fixing plate (101) is integrally formed with the buffer integrated upper bracket (1) and is perpendicular to the buffer integrated upper bracket (1). The first fixing plate (101) is provided with a safety belt hanging point (103), which is a hole opened on the first fixing plate (101). The lower part of the first fixing plate (101) is integrally formed with the first buffer relief structure (104), and the lower part of the first buffer relief structure (104) is fixedly connected to the steel cable connector (2); the steel cable connector (2) includes a connector (106) and a hydraulic steel cable sleeve (107), the upper end of the steel cable (3) is inserted and fixed inside the hydraulic steel cable sleeve (107); the lower end of the steel cable (3) is fixedly connected to the tensioning device (5); the rope gripper (6) is sleeved on the outside of the steel cable (3) and can slide along the axial direction of the steel cable (3); The buffer integrated upper bracket (1) is fixedly connected to two back universal clamps (102) at the top and bottom. The two back universal clamps (102) are used in conjunction with the buffer integrated upper bracket (1) and are respectively clamped on two adjacent steps at the top of the ladder (7). The buffer integrated upper bracket (1) is also provided with an installation direction indicator groove (105). The bottom bracket (4) is fixedly installed at the bottom of the ladder (7). The bottom bracket (4) extends vertically with a second fixing plate (401). The second fixing plate (401) is integrally formed with the bottom bracket (4). The bottom bracket (4) is fixedly connected to two back universal clamps (102) at the top and bottom. The two back universal clamps (102) are used in conjunction with the bottom bracket (4) and are respectively clamped on two adjacent steps at the bottom of the ladder (7). The bottom bracket (4) is also provided with an installation direction indicator groove (402).

2. A vertical lifeline device according to claim 1, characterized in that, The tensioning device (5) includes a screw (502), a tensioner body (501), a pre-tensioning spring (503), and a pre-tension force adjusting nut (504). One end of the screw (502) is fixedly connected to the tensioner body (501), and the other end of the screw (502) axially passes through the second fixing plate (401) of the bottom bracket (4); the pre-tensioning spring (503) is sleeved on the outer circumference of the screw (502), one end of the pre-tensioning spring (503) abuts against the top end face of the second fixing plate (401), and the other end abuts against the end face of the tensioner body (501); the pre-tension force adjusting nut (504) is threadedly connected to one end of the screw (502) that passes through the second fixing plate (401), and the end face of the pre-tension force adjusting nut (504) abuts against the lower end face of the second fixing plate (401); the tensioner body (501) is fixedly connected to the lower end of the steel cable (3).

3. A vertical lifeline device according to claim 2, characterized in that, The tensioning device (5) also includes a collapsible pad (505) and a tension indicator (506). The collapsible gasket (505) and the tension indicator (506) are located between the tensioner body (501) and the pre-tension spring (503) and are close to the tensioner body (501); the lower part of the collapsible gasket (505) abuts against the pre-tension spring (503), and the upper part of the tension indicator (506) abuts against the tensioner body (501).

4. A vertical lifeline device according to claim 2, characterized in that, The tensioner body (501) is provided with a steel cable installation observation hole (507), and the tensioner body (501) is also provided with a top screw.

5. A vertical lifeline device according to claim 1, characterized in that, The rope gripper (6) includes a housing (606), and an opening and closing cover (610) is covered on the outside of the housing (606); an opening and closing cover torsion spring (608) is connected between the opening and closing cover (610) and the housing (606); an opening and closing locking spring (609) is hinged on the opening and closing cover (610), and an opening and closing cover switch (607) is hinged on the opening and closing locking spring (609); a guide wheel (601) is rotatably connected to the top of the opening and closing cover (610), and the guide wheel (601) is in contact with the steel cable (3).

6. A vertical lifeline device according to claim 5, characterized in that, The rope grabber (6) has a locking block (603) inside, which is integrally formed with the second buffer relief structure (604); the locking block (603) is hinged with a locking coil spring (605); the second buffer relief structure (604) is fixedly connected to a universal connecting ring (602) on the outside; the locking block (603) can be rubbed and locked with the steel cable (3) under the drive of the locking coil spring (605) to achieve fall prevention.

7. A vertical lifeline device according to claim 6, characterized in that, The locking block (603) has a protrusion or groove at one end near the steel cable (3) to increase the friction of the locking block (603) on the steel cable (3).

Images