Hand-held stringer
By designing a handheld rope threader, and utilizing the interlocking structure of the U-shaped base, cover plate, and insert, the safety problem of rope threading in high-altitude operations is solved, achieving safe and convenient rope threading over long distances.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 陈环宣
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-02
AI Technical Summary
The existing rope-threading process requires personnel to approach the object manually, which poses a high risk, especially in high-altitude work environments.
A handheld rope threader was designed, including a U-shaped base, a cover plate, an insert body, and a fixing mechanical structure. Through the cooperation of springs and ramps, it can fix ropes or cables and perform long-distance rope threading operations. The locking structure of a cone and a V-shaped opening ensures the return of the rope end.
It enables the safe completion of rope threading operations from a distance or at a high altitude, reducing the dangers of working at heights and improving the safety and convenience of operations.
Smart Images
Figure CN224315431U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hand tools, specifically a handheld, high-position, rapid rope threading device. Background Technology
[0002] Passing a rope through a hole in an object and looping it back to your hand from the other side, or looping it around a rod-like object and then retrieving the rope end, is a common method of connecting objects with a rope, widely used in various industries. For example, construction workers need to thread safety ropes through safety rings high in walls or onto top steel frames to install safety ropes. In high-altitude work environments, workers must use safety ropes or protective ropes to prevent falls. However, the existing rope-tying process often requires the worker to be close to the object to operate manually, which carries a high degree of danger. Therefore, a tool is needed that allows for remote or high-altitude rope threading and retrieving of the rope end from the worker's hand. Summary of the Invention
[0003] The present invention aims to provide a handheld rope threader that allows a person to thread a rope through a hole in an object or around a rod-shaped object and retrieve the rope end from a distance.
[0004] Therefore, one object of the present invention is to provide a handheld rope threader, comprising: a U-shaped base to which a rod or bar can be connected at the bottom; a cover plate connected to the top of an open column on one side of the base via a pivot; the cover plate and the base are kept at a certain opening by a spring; an inverted '7' shaped corner rod is connected below the cover plate; a hole is opened downwards on the top of the other column, with several movable beads inside the hole via springs; an insert is inserted into the hole, with an arc-shaped inward bend corresponding to the beads in the hole; the head of the insert is a cone, the maximum circumference of the cone being larger than the circumference of the insert; and a fixing mechanical structure for attaching ropes or cables is mounted on the insert. The key feature is that the insert, the fixing mechanical structure, and the cone are combined into a large arrowhead body; the cover plate contains a V-shaped opening formed by two opposing ramps, which are slidable by a spring; when the cover plate rotates toward the large arrowhead body, the center line of the opening of the V-shaped opening is aligned with the tip of the large arrowhead body. Attached Figure Description
[0005] Figure 1 is a diagram of the overall structure in its normal state.
[0006] Figure 2 is a structural diagram when the cover is closed.
[0007] Figure 3 is a schematic diagram of the overall structure of the large arrowhead.
[0008] Figure 4 is a structural diagram of the fixed mechanical structure 12.
[0009] Figure 5 is a magnified left view of Figure 4.
[0010] Figure 6 is a schematic diagram of the cover plate structure (Figure 2, top view).
[0011] Figure 7 is the left view of Figure 6.
[0012] Figure 8 is a schematic diagram of the internal structure of the cover plate in Figure 7, enlarged by 5 times.
[0013] Figure 9 is a fitting diagram when there is a gap between the large arrowhead and the ramp plate.
[0014] Figure 10 shows the fit diagram when there is no gap between the large arrow body and the ramp plate.
[0015] Figure 11 is a schematic diagram showing how the large arrow is locked after passing through the V-shaped opening.
[0016] Figure 12 is a schematic diagram of the cover opening after the large arrow body is locked.
[0017] Figure 13 is a schematic diagram of the rod reaching the insert.
[0018] Figure 14 is a schematic diagram of the rod reaching the rope.
[0019] Figure 15 is a schematic diagram of the insert 10 being made into an arc shape.
[0020] Figure 16 is a schematic diagram of the overall structure of the arc-shaped insert 10.
[0021] In the diagram: 1. U-shaped base; 2. Rod or bar; 3. Axle; 4. Cover plate; 5. Spring; 6. An inverted '7' shaped angle bar; 7. Hole; 8. Spring; 9. Bead; 10. Insert; 11. Cone; 12. Fixed mechanical structure; 13. Rope or cable; 14. A rod-like object not on the outside of this appliance; 15. Two opposing ramps; 16. Spring; 17. Inward arc; 18. Straight plate; 19. Rotatable arc plate; 20. Bolt. Detailed Implementation
[0022] To achieve the above objectives, the technical solution of this utility model is as follows:
[0023] Using Figures 1 to 14 as examples, let's start with Figure 1. A U-shaped base 1 has a rod or lever 2 connected to its bottom. The connection between the rod or lever 2 and the base 1 can be fixed or detachable. The rod or lever 2 is used for remote operation of the appliance. A cover plate 4 is connected to the top of the column on the open side of the base 1 via a pivot 3. The cover plate 4 is connected to the base 1 by a spring 5. By adjusting the spring force, the cover plate 4 can maintain a certain opening angle, approximately 30-60 degrees. Below the cover plate 4 is an inverted '7'-shaped corner rod 6. The corner rod 6 is subjected to a downward force from an external rod-like object 14 (not on the appliance), which can pull the cover plate 4 closed. See Figure 2 for an illustration of the closed cover plate 4. On the other side, a hole 7 is opened downwards from the top of the column. Several movable beads 9 are inside the hole 7 via springs 8. An insert 10 is inserted into the hole 7. The internal energy can slide freely in and out. The corresponding position of the insert 10 and the ball 9 in the hole 7 has an arc-shaped inner bend 17. The ball 9 is pushed against the arc-shaped inner bend 17 by the spring 8, so that the insert 10 is stuck and does not slide out, but it can be released under greater force. The head of the insert 10 is a cone 11. The maximum circumference of the cone 11 is larger than that of the insert 10. The insert 10 is equipped with a fixing mechanical structure 12 for installing ropes or cables 13. The insert 10, the fixing mechanical structure 12, and the cone 11 are combined to form a large arrow body. The overall structure of the large arrow body is shown in Figure 3.
[0024] Figure 4 is a structural diagram of the fixed mechanical structure 12. The fixed mechanical structure 12 consists of a straight plate 18, a rotatable arc plate 19, and bolts 20, etc. (See Figure 5). Figure 5 is a left-view and enlarged structural schematic diagram of Figure 4. One side of the rotatable arc plate 19 is connected to the straight plate 18 through a flexible connection or a rotating shaft, and the other side can be fixed to the straight plate 18 through bolts 20. A rope or cable 13 can be passed through the middle of the rotatable arc plate 19 and the straight plate 18, so that the rope or cable 13 can be fixed. The fixed mechanical structure 12 can have various structural forms, which will not be described here.
[0025] Figure 6 is a schematic diagram of the cover plate structure, which is also a top view of Figure 2. The cover plate 4 contains a V-shaped opening formed by two opposing ramp plates 15. The two opposing ramp plates can slide through the spring 16. When the cover plate 4 rotates toward the large arrow body, the center line of the V-shaped opening is aligned with the tip of the large arrow body, facilitating the entry of the cone 11. After being subjected to force, the two opposing ramp plates 15 slide apart vertically. After the cone 11 is fully inserted, the two opposing ramp plates 15 are locked onto the insert 10 by the action of the spring 16, preventing the cone 11 from retracting. In other words, the large arrow body is locked. In Figure 6, the cone 11 can slide left and right. Figure 7 is a left view of Figure 6, where the large arrow body is completely locked and cannot move left or right.
[0026] Figure 8 is a schematic diagram of the internal structure of the upper cover plate 4 in Figure 7, magnified five times in width, but not in height. As can be seen from Figure 8, the V-shaped opening formed by the two opposing ramps 15 facilitates the entry of the large arrowhead tip. Figure 8 shows the V-shaped opening with a gap, further facilitating the entry of the large arrowhead tip. Figure 9 shows the fit between the large arrowhead and the ramp 15 with a gap, with the tip of the large arrowhead aligned with the center line of the V-shaped opening. Figure 10 shows the fit between the large arrowhead and the ramp 15 without a gap, with the tip of the large arrowhead aligned with the center line of the V-shaped opening. Figure 11 is a schematic diagram of the large arrowhead locked after passing through the V-shaped opening; the large arrowhead cannot retract, and the fixing mechanism 12 prevents it from advancing further, completely locking it. To remove it, first pull the ramps 15 to both sides, and the large arrowhead can be pulled out. The structure has now been explained.The following describes the usage process, as shown in Figure 1. First, attach one end of the rope or cable 13 to the fixed mechanical structure 12. Place the other end of the rope or cable 13 on the ground or tie it somewhere. Insert the large arrow body 10 into the hole 7. The ball 9 retracts first, and under the push of the spring 8, the ball 9 gets stuck on the arc-shaped inner bend 17, thus locking the insert body 10 and preventing it from slipping out. That is, the large arrow body is fixed on the base 1. The bottom of the U-shaped base 1 is connected to a rod or pole 2. Hold the rod or pole 2 and raise or lower the device. The rope or cable 13 will follow. When the device is close to the external rod-shaped object 14 at a high point of the target, there is a certain space between the cover plate 4 and the cone 11. The external rod-shaped object 14 enters this space. After moving slightly, it enters the space of the inverted '7' shaped corner rod 6. Raise the device upward, and the external rod-shaped object 14 is forced to press down on the corner rod 6, causing the cover plate 4 to... When the device is pulled down, the tip of the cone 11 opens the V-shaped opening formed by the two opposing ramps 15. After the cone 11 is fully inserted, the two opposing ramps 15 are locked onto the insert 10 by the spring 16, preventing the cone 11 from retracting. In other words, the large arrow is stuck, as shown in Figure 2. Pulling the device down forces the external rod 14 to push the cover plate 4 upward. The cover plate 4, along with the large arrow and the rope or cable 13, moves upward. The cone 11 can slide left and right on the cover plate 4 for a certain distance, ensuring that the large arrow and the hole 7 maintain a suitable angle, allowing the large arrow to slide out smoothly and the insert 10 to be completely pulled out of the hole 7, as shown in Figure 12. Continuing to pull the device down further forces the external rod 14 to push the cover plate 4 upward. After opening beyond a right angle, the external rod 14... Insert the upper part into the upper part 10, as shown in Figure 13; continue pulling down the device, then slightly to the right, the outer rod 14 is forced upward against the rope or cable 13, as shown in Figure 14. At this point, you can see that the rope or cable 13 has passed through the outer rod 14. Pull back the device, one end of the rope or cable 13 rises and the other end retracts. Disconnect the rope or cable 13 on the fixed mechanical structure 12. Both ends of the rope or cable 13 are in your hands. This completes the action of the rope or cable 13 passing through the outer rod 14, thus creating a safety rope or protective rope. If you do not disconnect the rope or cable 13, pull the ramp 15 to both sides, the large arrow body will come out, and then insert the large arrow body into the hole 7. Continue to pass through another distant or higher rod 14. Following the above steps, this can hang the rope or cable 13 between two high spaces or two points, which can be used for various high-altitude operations.
[0027] In addition, if the large arrow-shaped insert 10 is straight, it can be pulled out of the hole 7 by the cone 11 sliding a certain distance on the cover plate 4. If the large arrow-shaped insert 10 is made into an arc shape, it will be easier to pull it out of the hole 7, as shown in Figure 15. The radius of the arc is the distance from the insert 10 to the pivot 3. The insert 10 can be made into various shapes such as cylinders and flat plates. The overall effect is shown in Figure 16.
Claims
1. A handheld rope threader, comprising a U-shaped base to which a rod or bar can be connected, a cover plate connected to the top of an open column via a pivot, the cover plate and base being held at a certain opening by a spring, an inverted '7'-shaped corner rod connected below the cover plate, and a hole with several movable beads held by springs on the other side of the column. An insert is inserted into the hole, the insert having an arc-shaped inward bend corresponding to the beads in the hole, the head of the insert being a cone, the maximum circumference of the cone being larger than the circumference of the insert, and a fixing mechanical structure for attaching ropes or cables mounted on the insert, characterized in that: The insert, the fixed mechanical structure, and the cone are combined into a large arrow body. The cover plate contains a V-shaped opening formed by two opposing ramps. The two opposing ramps can slide by springs. When the cover plate rotates toward the large arrow body, the center line of the V-shaped opening is aligned with the tip of the large arrow body.
2. The handheld rope threader according to claim 1, characterized in that: The insert for the large arrowhead shape is either straight or curved.