Flexible falling protector

Abstract

The utility model discloses a flexible anti-falling device, which relates to the field of anti-falling equipment and comprises a fixing shell, a connecting rope fixedly connected to the bottom of the fixing shell, a brake box fixedly connected to the bottom of the connecting rope, a mounting groove formed in a fixing frame, brake blocks rotatably mounted in the mounting groove, and a plurality of bumps fixedly connected to the upper ends of the two brake blocks. And connecting plates are connected to one sides of the two fixing frames in an up-down sliding mode, connecting springs are fixedly connected to the bottoms of the connecting plates, and ropes are fixedly connected to the tops of the connecting plates. The device has the beneficial effects that a connecting plate exerts pulling force on a connecting spring to enable the connecting spring to deform, a falling person is buffered to a certain degree, the connecting plate moves upwards and extrudes an auxiliary plate, a brake block is driven to rotate around a fixing column, the brake block extrudes a rope, meanwhile, friction between a protruding block and the rope is increased, and the rope and the brake block gradually stop relative movement; and damage to the device and personnel under the condition of rapid braking is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fall protection equipment, and in particular to a flexible fall protection device. Background Technology

[0002] A fall arrestor, also known as a differential brake, is a protective device. It can quickly brake and lock a falling object within a limited distance, making it suitable for lifting cargo, protecting the lives of ground personnel, and preventing damage to the lifted workpiece.

[0003] A search revealed Chinese patent publication number CN217041129U, which discloses a flexible guide rail type fall arrestor. This patent uses a fixed rope to pull a slider that compresses a buffer spring. The slider causes the locking block to slide along the inclined side of the right-angled frustum-shaped teeth on the outer side of the locking bar. At this time, the locking bar compresses the fixed spring and then resets to lock with the locking block again, thus completing the braking. This device has certain problems: when falling, the slider is driven by the person's own weight, and the locking bar and locking block work together to brake. This results in the locking block being subjected to great pressure at the moment of stopping the fall, which may cause deformation and affect the service life of the device. Utility Model Content

[0004] The purpose of this invention is to provide a flexible fall arrestor in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A flexible fall arrestor includes a fixed shell, a connecting rope fixedly connected to the bottom of the fixed shell, a brake box fixedly connected to the bottom of the connecting rope, a through groove opened at the bottom of the brake box, two symmetrical fixed frames fixedly connected to the bottom wall of the brake box, a guide mechanism provided at the top of each fixed frame, an installation groove opened on the fixed frame, a fixed column fixedly connected in the installation groove, a brake block rotatably mounted on the fixed column, the brake blocks are inclined vertically, and the two brake blocks are V-shaped with the smaller end facing upward, multiple protrusions fixedly connected to the upper end of the two brake blocks near each other, auxiliary plates symmetrically connected to the lower end of the brake blocks, a counterweight block provided in the auxiliary plate, a connecting plate slidably connected vertically to the side of the two fixed frames away from each other, the connecting plate is below the auxiliary plate, a connecting spring fixedly connected to the bottom of the connecting plate, the bottom of the connecting spring fixedly connected to the bottom of the brake box, a rope fixedly connected to the top of each connecting plate, the movable end of the rope going upward over the guide mechanism and then downward, passing between the brake blocks, the movable end of the rope extending to below the through groove.

[0007] Preferably, the guiding mechanism includes two symmetrical fixed blocks, which are fixedly connected to the top of the fixed frame. A movable rod is rotatably connected to one side of the fixed blocks that is close to each other. A pulley is fixedly connected to the movable rod and the pulley is in contact with the rope.

[0008] Preferably, the movable ends of the two ropes are fixedly connected to connectors, which are located below the through groove, and a safety lock is fixedly connected to the bottom of the connectors.

[0009] Preferably, symmetrical sliding grooves are opened on both sides of the fixed shell, and a baffle plate is slidably connected in the sliding groove. The top of the baffle plate is opened with a threaded hole.

[0010] Preferably, symmetrical fixing plates are fixedly connected to both sides of the fixing shell, and threaded rods are threadedly connected to the fixing plates, with the threaded rods corresponding to and fitting the threaded holes below.

[0011] Preferably, a guide groove is formed through one side of the fixed shell.

[0012] The beneficial effects are as follows: the rope pulls the connecting plates on both sides, the connecting plates apply tension to the connecting spring, causing the connecting spring to deform. The connecting spring provides some cushioning for the falling personnel. At the same time, the brake blocks on the side closer to each other limit the rope. The connecting plates move upward until they contact and squeeze the auxiliary plate, causing the auxiliary plate to drive the brake blocks to rotate around the fixed column. This causes the protrusions on the brake blocks to move towards the side closer to each other. As the brake blocks squeeze the rope, the protrusions increase the friction between the rope and the brake blocks, causing the rope and the brake blocks to gradually stop relative movement, thus avoiding damage to the device and personnel in the event of rapid braking.

[0013] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a perspective view of a flexible fall arrestor as described in this utility model;

[0016] Figure 2 This is a left view of the brake box of a flexible fall arrestor according to this utility model;

[0017] Figure 3 yes Figure 2 Sectional view at point AA;

[0018] Figure 4 This is a three-dimensional cross-sectional view of the brake box of a flexible fall arrestor according to this utility model;

[0019] Figure 5 yes Figure 4 Enlarged view of point B.

[0020] The reference numerals in the attached drawings are explained as follows: 101, fixed shell; 102, brake box; 103, connecting rope; 201, sliding groove; 202, baffle plate; 203, threaded rod; 301, fixed frame; 302, mounting groove; 401, brake block; 402, protrusion; 403, auxiliary plate; 404, connecting plate; 405, connecting spring; 501, fixed block; 502, movable rod; 503, pulley; 601, rope; 602, connector; 7, safety lock; 8, guide groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figures 1-5As shown, a flexible fall arrestor includes a fixed shell 101. A connecting rope 103 is fixedly connected to the bottom of the fixed shell 101, and a brake box 102 is fixedly connected to the bottom of the connecting rope 103. A through groove is opened at the bottom of the brake box 102, and two symmetrical fixing frames 301 are fixedly connected to the bottom wall of the brake box 102. Each fixing frame 301 is provided with a guide mechanism at the top. An installation groove 302 is opened on the fixing frame 301, and a fixing post is fixedly connected in the installation groove 302. A brake block 401 is rotatably mounted on the fixing post. The brake blocks 401 are inclined vertically, and the two brake blocks 401 are... Formed in a V-shape with the smaller end facing upwards, the two brake blocks 401 have multiple protrusions 402 fixedly connected to their upper ends near each other. Symmetrical auxiliary plates 403 are fixedly connected to the lower ends of the brake blocks 401, with counterweights inside each auxiliary plate 403. Connecting plates 404 are slidably connected vertically to the sides of the two fixed brackets 301 away from each other, positioned below the auxiliary plates 403. Connecting springs 405 are fixedly connected to the bottom of the connecting plates 404, with the bottom of the connecting springs 405 fixedly connected to the bottom of the brake box 102. Ropes 60 are fixedly connected to the top of each connecting plate 404. 1. The movable end of rope 601 extends upwards past the guide mechanism and then downwards, passing between brake blocks 401. The movable end of rope 601 extends to the bottom of the through groove. In the event of a fall, the falling user will pull the symmetrical rope 601 through connector 602, causing the rope 601 to pull the connecting plates 404 on both sides. The connecting plates 404 slide against the fixing frame 301, and the connecting plates 404 apply tension to the connecting spring 405, causing the connecting spring 405 to deform. At this time, the connecting spring 405 exerts a relative force on the rope 601, which helps to restrain the falling user. There is a certain amount of buffering, and at the same time, the brake blocks 401 limit the symmetrical ropes 601 on the side closer to each other. When the connecting plate 404 moves upward and abuts against the auxiliary plate 403, the connecting plate 404 contacts and squeezes the auxiliary plate 403, causing the auxiliary plate 403 to drive the brake blocks 401 to rotate around the fixed column. This causes the protrusions 402 on the brake blocks 401 to move towards the side closer to each other. While the brake blocks 401 squeeze the ropes 601, the protrusions 402 increase the friction with the ropes 601. When the ropes 601 and the brake blocks 401 stop moving relative to each other, the person stops falling.

[0025] The guiding mechanism includes two symmetrical fixed blocks 501, which are fixedly connected to the top of the fixed frame 301. A movable rod 502 is rotatably connected to one side of the fixed blocks 501 that is close to each other. A pulley 503 is fixedly connected to the movable rod 502. The pulley 503 is in contact with the rope 601. The rope 601 drives the movable rod 502 to rotate. The pulley 503 limits and guides the rope 601 to prevent it from falling off during movement.

[0026] The movable ends of the two ropes 601 are fixedly connected to connectors 602, which are located below the through groove. A safety lock 7 is fixedly connected to the bottom of the connectors 602.

[0027] The fixed shell 101 has symmetrical sliding grooves 201 on both sides, and a baffle plate 202 is slidably connected in the sliding groove 201. The baffle plate 202 has a threaded hole at the top.

[0028] The fixed housing 101 has symmetrical fixed plates fixedly connected to both sides. The fixed plates are threaded with threaded rods 203, which correspond to and fit with the threaded holes below. When the device is idle, the baffle plate 202 is pulled to make the baffle plate 202 slide with the sliding groove 201, so that the baffle plate 202 blocks the guide groove 8 to prevent dust from adhering to the guide groove 8. Then the threaded rod 203 is rotated so that the threaded rod 203 limits the baffle plate 202 through the threaded hole.

[0029] A guide groove 8 is provided through one side of the fixed shell 101. In other embodiments, the fixed shell 101 includes a shell and a cover. The upper end of the shell is provided with a groove and the lower end of the cover is provided with a groove. The shell and the cover are fastened together by bolts, so that the grooves on the shell and the cover form the guide groove 8. When the fixed shell 101 is installed on the flexible steel cable, the bolts on the cover are unscrewed, the flexible steel cable is clamped in the grooves on the shell and the cover, and then the bolts are tightened.

[0030] Working principle: During use, the fixed shell 101 is installed on the flexible steel cable through the guide groove 8, and then the safety lock 7 is connected to the user. When a fall occurs, the falling user will pull the symmetrical ropes 601 through the connector 602, causing the ropes 601 to pull the connecting plates 404 on both sides. The connecting plates 404 slide against the fixed frame 301, and the connecting plates 404 apply tension to the connecting springs 405, causing the connecting springs 405 to deform. At this time, the connecting springs 405 exert a relative tension on the ropes 601, which provides a certain cushioning for the falling person. The ropes 601 drive the movable rod 502 to rotate, and the pulley 503 limits and guides the ropes 601 to prevent them from falling off during movement. At the same time, the brake blocks 401 on the side closer to each other hold the symmetrical ropes 601 together. The device is positioned such that when the connecting plate 404 moves upward to abut against the auxiliary plate 403, the connecting plate 404 contacts and presses against the auxiliary plate 403, causing the auxiliary plate 403 to drive the brake block 401 to rotate around the fixed column. This causes the protrusion 402 at the upper end of the brake block 401 to move towards each other, thus increasing the friction between the upper end of the brake block 401 and the rope 601. When the rope 601 and the brake block 401 stop moving relative to each other, the person stops falling. When the device is idle, the shielding plate 202 is pulled, causing the shielding plate 202 to slide against the sliding groove 201, thereby shielding the guide groove 8 and preventing dust from adhering to the guide groove 8. Then, the threaded rod 203 is rotated, causing the threaded rod 203 to limit the shielding plate 202 through the threaded hole.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flexible fall arrestor, comprising a fixed shell (101), wherein a connecting rope (103) is fixedly connected to the bottom of the fixed shell (101), characterized in that: The bottom of the connecting rope (103) is fixedly connected to a brake box (102). The bottom of the brake box (102) has a through groove. Two symmetrical fixing brackets (301) are fixedly connected to the bottom wall of the brake box (102). Each fixing bracket (301) is provided with a guide mechanism at the top. The fixing bracket (301) has an installation groove (302). A fixing post is fixedly connected in the installation groove (302). A brake block (401) is rotatably installed on the fixing post. The brake block (401) is inclined vertically, and the two brake blocks (401) form a V shape with the smaller end facing upward. Multiple protrusions (402) are fixedly connected to the upper end of the two brake blocks (401) on the side close to each other. The lower end of the brake block (401) is fixed A symmetrical auxiliary plate (403) is connected to the auxiliary plate (403), and a counterweight is provided in the auxiliary plate (403). A connecting plate (404) is slidably connected to the two fixed frames (301) on the side away from each other. The connecting plate (404) is located below the auxiliary plate (403). A connecting spring (405) is fixedly connected to the bottom of the connecting plate (404). The bottom of the connecting spring (405) is fixedly connected to the bottom of the brake box (102). A rope (601) is fixedly connected to the top of the connecting plate (404). The movable end of the rope (601) goes upward around the top of the guide mechanism and then extends downward, passing between the brake blocks (401). The movable end of the rope (601) extends to the bottom of the through groove.

2. The flexible fall arrestor according to claim 1, characterized in that: The guiding mechanism includes two symmetrical fixed blocks (501), which are fixedly connected to the top of the fixed frame (301). A movable rod (502) is rotatably connected to one side of the fixed blocks (501) that is close to each other. A pulley (503) is fixedly connected to the movable rod (502) and the pulley (503) is in contact with the rope (601).

3. A flexible fall arrestor according to claim 1, characterized in that: The movable ends of the two ropes (601) are fixedly connected to connectors (602), which are located below the through groove, and a safety lock (7) is fixedly connected to the bottom of the connectors (602).

4. A flexible fall arrestor according to claim 1, characterized in that: The fixed shell (101) has symmetrical sliding grooves (201) on both sides, and a baffle plate (202) is slidably connected in the sliding groove (201). The baffle plate (202) has a threaded hole at the top.

5. A flexible fall arrestor according to claim 4, characterized in that: The fixed shell (101) is fixedly connected to symmetrical fixed plates on both sides, and threaded rods (203) are threadedly connected to the fixed plates. The threaded rods (203) correspond to and are adapted to the threaded holes below.

6. A flexible fall arrestor according to claim 1, characterized in that: A guide groove (8) is provided through one side of the fixed shell (101).

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