Threaded safety fuse twisting tool and method of use

Abstract

The present application relates to the technical field of fuse twisting, aiming at solving the problems of low efficiency, easy to cause cutting injury to operators, and unable to meet the efficient assembly requirements and occupational health requirements in the prior art, providing a threaded anti-loose fuse twisting tool and a using method thereof, comprising a shaft; the outer surface of the shaft is a double helical groove, and one end of the shaft is threadedly connected with an end cover; a pull ring is rotatably fixedly connected to the end of the end cover away from the shaft; a rotating wheel is arranged at the end of the shaft away from the end cover, the inner side of the rotating wheel is a double helical tooth, the rotating wheel is rotatably connected to the shaft along the shaft center, and the double helical groove and the double helical tooth are matched with each other; a first circular hole and a second circular hole are arranged on the rotating wheel in the axial direction, the first circular hole and the second circular hole are symmetrically distributed on the rotating wheel along the shaft center, and the first circular hole and the second circular hole both penetrate the rotating wheel along the axial direction of the rotating wheel. The present application has the advantages of simple operation, high twisting efficiency, convenient metal fuse assembly and disassembly, and effective protection of operators from metal fuse cutting injury.

Description

Technical Field

[0001] This invention relates to the field of fuse stranding technology, and more specifically, to a thread-locking fuse stranding tool and its usage method. Background Technology

[0002] In the field of mechanical assembly, a widely used method for preventing thread loosening is to use the tension of a metal fuse as a safety device.

[0003] The People's Republic of China Aviation Industry Standard HB0-2-2002, "Methods for Preventing Loosening of Threaded and Pin Connections," stipulates: "6.3 The fuse should be wound so that there are no gaps between each turn; one turn refers to a full loop of the fuse from one end to the other; the number of turns should not be less than 3 turns for a 10mm length for fuses with a diameter d ≤ 0.8mm, and not less than 2 turns for fuses with a diameter d > 0.8mm." "6.5 The end of the fuse should be wrapped with 3 to 4 turns and pressed tightly." Taking a 40mm long fuse with a diameter d = 0.3mm as an example, at least 18 twisted turns are required; the efficiency of purely manual operation is extremely low, requiring at least 2 to 3 minutes to complete.

[0004] Currently, one method of applying fuses is purely manual, which is inefficient and the metal fuse wires are very thin, easily causing cuts to the operator.

[0005] The second method is to use wire twisters. The front end clamps the fuse. Ordinary wire twisters require manual rotation of the clamp body, which is less efficient. Some wire twisters can pull the steel wire rope at the tail to rotate the entire clamp body to achieve the purpose of twisting the wire. Summary of the Invention

[0006] The present invention aims to provide a thread-locking fuse twisting tool and its usage method to solve the problems of low efficiency and easy cutting injury to operators in the prior art, which can no longer meet the needs of efficient assembly and occupational health requirements.

[0007] The embodiments of the present invention are implemented as follows:

[0008] This invention provides a thread-locking fuse twisting tool, which includes a shaft;

[0009] The outer surface of the shaft is a double helical groove, and one end of the shaft is provided with an end cap, which is threaded to one end of the shaft along the axis of the shaft.

[0010] The end cap away from the shaft is provided with a pull ring, and one end of the pull ring is rotatably and fixedly connected to the end cap away from the shaft.

[0011] A rotating wheel is provided at the end of the shaft away from the end cover. The inner side of the rotating wheel has double helical teeth. The rotating wheel is rotatably connected to the shaft along the axis of the shaft. The double helical groove and the double helical teeth are adapted to each other.

[0012] The aforementioned rotating wheel has a first circular hole and a second circular hole in its axial direction. The first circular hole and the second circular hole are symmetrically distributed on the rotating wheel along the axis of the rotating wheel, and both the first circular hole and the second circular hole penetrate the rotating wheel along its axial direction.

[0013] The thread-locking fuse twisting tool disclosed in this embodiment passes the fuse through a roller, and the fuse is twisted by turning the roller with a finger. This achieves the benefit of simple operation, high twisting efficiency, convenient installation and removal of metal fuses, and effective protection of the operator from metal fuse cutting injuries.

[0014] Optionally: the end of the shaft near the end cap has a connector, the connector is integrally formed with the shaft, and there is an annular relief groove between the shaft and the connector.

[0015] With this configuration, when a worker processes the aforementioned double helical groove on a CNC lathe, the aforementioned tool retraction groove can effectively retract the cutting tool.

[0016] Optionally: the outer wall of the connector has an external thread, the end cap near the shaft has a recessed hole, the inner wall of the recessed hole has an internal thread adapted to the external thread, and the end cap is threaded to the connector through the recessed hole.

[0017] The end cap away from the shaft has a circular inner hole, the connector away from the shaft has a rotating hole, and the pull ring near the end cap has a stepped shaft that rotatably passes through the circular inner hole and fits into the rotating hole.

[0018] This configuration allows the pull ring to rotate on the connector head. When one hand holds the wheel and the index finger of the other hand is inserted into the pull ring, the pull ring is pulled away from the wheel. This requires the shaft to rotate, but the pull ring does not rotate. The rotation hole cooperates with the stepped shaft, which facilitates the shaft to rotate while the pull ring does not rotate, thus allowing the two fuses to be twisted together.

[0019] Optionally, the end of the pull ring furthest from the shaft is a ring-shaped component.

[0020] This design makes it easy for workers to pull the ring, facilitating the winding of the metal fuse wire.

[0021] Optionally, the end of the shaft furthest from the end cap has a rounded end.

[0022] This configuration facilitates the screwing of the aforementioned wheel onto the aforementioned shaft.

[0023] Optionally, the shaft is provided with a plurality of pin holes in the radial direction at the end away from the end cover, and each of the pin holes is fitted with a pin, and the outer opening of each of the pin holes is a tapered countersunk hole.

[0024] With this configuration, the pin hole and the pin engage, which helps to limit the axial position of the roller on the shaft and effectively prevents the roller from rotating out of the shaft.

[0025] Optionally: the ends of the first circular hole and the second circular hole away from the end cap respectively have a first conical countersunk hole and a second conical countersunk hole, the first circular hole and the first conical countersunk hole are coaxially connected, and the second circular hole and the second conical countersunk hole are coaxially connected.

[0026] With this configuration, the first and second conical countersunk holes have a guiding function, facilitating the insertion of the fuse.

[0027] Optionally: The aforementioned wheel is provided with a plurality of threaded holes in its radial direction, and the plurality of threaded holes are all connected to the aforementioned first circular hole and the aforementioned second circular hole;

[0028] Several of the aforementioned threaded holes are threaded with adjusting screws. One end of the adjusting screw has a hemispherical head, and the other end of the adjusting screw has a slot.

[0029] With this setup, the screwing depth of the adjusting screw can be adjusted using a flathead screwdriver, thereby adjusting the tightness of the metal fuse passing through the first and second round holes, so that it is tightened while still being able to slide freely.

[0030] Optionally, the aforementioned rotating wheel is further provided with an annular groove in the radial direction. The cross-section of the annular groove is an inverted T-shaped structure. A small slider is adapted to fit inside the annular groove. A connecting rod is vertically fixedly connected to the outer side of the small slider. A lever is fixedly connected to the outer end of the connecting rod.

[0031] This configuration allows operators to easily move the rotating wheel using the aforementioned lever, connecting rod, and small slider, thereby achieving the twisting of the metal fuse wire.

[0032] In one embodiment of this invention, a method for using a thread-locking fuse twisting tool is also provided, comprising the following steps:

[0033] Step 1: Pass both ends of the metal fuse through the first and second circular holes of the aforementioned rotating wheel, respectively;

[0034] Step 2: Use a flathead screwdriver to adjust the screwing depth of the adjusting screw, thereby adjusting the tightness of the metal fuse passing through the first and second round holes of the rotating wheel, so that it is taut but can slide freely. Metal fuses of the same diameter only need to be adjusted once, and no further adjustment is required.

[0035] Step 3: Hold the end cap with one hand and pinch the lever with the other hand. Pull the lever toward the end cap. The wheel moves and rotates along the axis under the push of the lever. The two strands of the metal fuse fall into the double helix groove of the axis. If they do not fall in, they can be adjusted manually. While the lever drives the wheel to rotate, the metal fuse rotates in the double helix groove.

[0036] Step 4: After reaching the required number of twisted turns, use one hand to hold the above-mentioned wheel, and insert the index finger of the other hand into the above-mentioned pull ring and pull it away from the above-mentioned wheel; because the above-mentioned wheel is fixed, the above-mentioned shaft moves away from the above-mentioned wheel and rotates when it is pulled, releasing the two metal fuses, and the two metal fuses are naturally twisted together;

[0037] Step 5: Bend the device so that the angle between the device and the metal fuse is approximately 90°, and pull it to make it taut;

[0038] Step six: Use diagonal pliers to cut the metal fuse wire and pull out the metal fuse scrap from the first and second round holes of the device.

[0039] In summary, the thread-locking fuse twisting tool and its usage method disclosed in this invention have the advantages of simple operation, high twisting efficiency, convenient installation and removal of metal fuses, and effective protection of operators from metal fuse cutting injuries. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a thread-locking fuse twisting tool according to an embodiment of the present invention;

[0042] Figure 2 This is a cross-sectional view of a thread-locking fuse twisting tool according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the shaft structure in an embodiment of the present invention;

[0044] Figure 4 This is a cross-sectional view of the shaft in an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the end cap structure in an embodiment of the present invention;

[0046] Figure 6 This is a cross-sectional view of the end cap in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the structure of the rotary wheel in an embodiment of the present invention;

[0048] Figure 8 This is a cross-sectional view of the wheel in an embodiment of the present invention;

[0049] Figure 9 This is a schematic diagram of the pull rod structure in an embodiment of the present invention;

[0050] Figure 10 This is a schematic diagram of the pull ring structure in an embodiment of the present invention;

[0051] Figure 11 This is a schematic diagram of the adjusting screw in an embodiment of the present invention;

[0052] Figure 12 This is a schematic diagram of the pin structure in an embodiment of the present invention.

[0053] Icons: 1-Shaft, 2-Double spiral groove, 3-End cap, 4-Pull ring, 5-Rotator, 6-Double spiral tooth, 7-First round hole, 8-Second round hole, 9-Connector, 10-Relief groove, 11-Concave hole, 12-Circular inner hole, 13-Stepped shaft, 14-Annular component, 15-Rounded head, 16-Pin hole, 17-Pin, 18-First conical countersunk hole, 19-Second conical countersunk hole, 20-Threaded hole, 21-Adjusting screw, 22-Hemispherical head, 23-Slotted groove, 24-Annular groove, 25-Small slider, 26-Connecting rod, 27-Tuning lever, 28-Annular relief groove, 29-Rotating hole. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0056] Example

[0057] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 This embodiment proposes a thread-locking fuse twisting tool, including a shaft 1;

[0058] The outer surface of the shaft 1 is a double helical groove 2, and one end of the shaft 1 is provided with an end cap 3, which is threaded along the axis of the shaft 1 to one end of the shaft 1;

[0059] A pull ring 4 is provided at the end of the end cap 3 away from the shaft 1. One end of the pull ring 4 is rotatably and fixedly connected to the end of the end cap 3 away from the shaft 1.

[0060] A rotating wheel 5 is provided at the end of the shaft 1 away from the end cover 3. The inner side of the rotating wheel 5 is a double helical tooth 6. The rotating wheel 5 is rotatably connected to the shaft 1 along the axis of the shaft 1. The double helical groove 2 and the double helical tooth 6 are adapted to each other.

[0061] The rotating wheel 5 has a first circular hole 7 and a second circular hole 8 on its axial direction. The first circular hole 7 and the second circular hole 8 are symmetrically distributed on the rotating wheel 5 along the axis of the rotating wheel 5. The first circular hole 7 and the second circular hole 8 both penetrate the rotating wheel 5 along its axial direction.

[0062] The thread-locking fuse twisting tool disclosed in this embodiment passes the fuse through a roller, and the fuse is twisted by turning the roller with a finger. This achieves the benefit of simple operation, high twisting efficiency, convenient installation and removal of metal fuses, and effective protection of the operator from metal fuse cutting injuries.

[0063] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 10The shaft 1 has a connector 9 at one end near the end cover 3. The connector 9 is integrally formed with the shaft 1. There is an annular tool relief groove 10 between the shaft 1 and the connector 9. When the worker processes the double helical groove 2 on the CNC lathe, the tool relief groove 10 can effectively realize the tool withdrawal.

[0064] The outer wall of the connector 9 has an external thread, and the end cap 3 has a recessed hole 11 at one end near the shaft 1. The inner wall of the recessed hole 11 has an internal thread that is adapted to the external thread. The end cap 3 is threaded to the connector 9 through the recessed hole 11.

[0065] The end cap 3 has a circular inner hole 12 at the end away from the shaft 1, and the connector 9 has a rotating hole 29 at the end away from the shaft 1. The pull ring 4 has a stepped shaft 13 at the end near the end cap 3. The stepped shaft 13 can rotatably pass through the circular inner hole 12 and fit into the rotating hole 29, so that the pull ring 4 can rotate on the connector 9. When one hand holds the rotating wheel 5 and the index finger of the other hand is inserted into the pull ring 4, the pull ring 4 is pulled in the direction away from the rotating wheel 5. This requires the shaft 1 to rotate, but the pull ring 4 does not rotate. The rotating hole 29 cooperates with the stepped shaft 13 to achieve the beneficial effect of the shaft 1 rotating while the pull ring 4 does not rotate, thereby making the two fuses twisted together.

[0066] In this embodiment, the stepped shaft 13 and the annular component 14 of the pull ring 4 are separate structures. The stepped shaft 13 and the annular component 14 can be threaded together or bonded with strong adhesives such as epoxy glue. Preferably, the threaded connection and strong adhesive are combined. That is, when the stepped shaft 13 and the annular component 14 are threaded together, strong adhesive is applied to the threaded connection. This connection is the most stable.

[0067] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 The end of the pull ring 4 away from the shaft 1 is a ring component 14. The ring pull ring 4 makes it easy for the staff to pull the pull ring 4 and facilitates the twisting of the metal fuse wire.

[0068] The end of shaft 1 away from end cover 3 has a rounded head 15, which makes it easy for the rotating wheel 5 to be screwed into shaft 1.

[0069] A plurality of pin holes 16 are radially provided at the end of shaft 1 away from end cover 3. Each pin hole 16 is fitted with a pin 17. The outer opening of each pin hole 16 is a tapered countersunk hole. The pin holes 16 and pins 17 cooperate to restrict the axial position of the rotating wheel 5 on shaft 1, effectively preventing the rotating wheel 5 from rotating out of shaft 1.

[0070] The first round hole 7 and the second round hole 8 have a first conical countersunk hole 18 and a second conical countersunk hole 19 at the ends away from the end cap 3, respectively. The first round hole 7 is coaxially connected with the first conical countersunk hole 18, and the second round hole 8 is coaxially connected with the second conical countersunk hole 19. The first conical countersunk hole 18 and the second conical countersunk hole 19 have a guiding function to facilitate the insertion of the fuse.

[0071] The rotating wheel 5 has several threaded holes 20 in its radial direction, and all of the threaded holes 20 are connected to the first round hole 7 and the second round hole 8. Each of the threaded holes 20 is threaded with an adjusting screw 21. One end of the adjusting screw 21 is a hemispherical head 22, and the other end of the adjusting screw 21 has a slot 23. The screwing depth of the adjusting screw 21 can be adjusted by using a flathead screwdriver, thereby adjusting the tightness of the metal fuse passing through the first round hole 7 and the second round hole 8, so that it is tightened while being able to slide freely.

[0072] The rotating wheel 5 is also provided with an annular groove 24 in the radial direction. The cross-section of the annular groove 24 is an inverted T-shaped structure. A small slider 25 is adapted in the annular groove 24. A connecting rod 26 is vertically fixed to the outer side of the small slider 25. A lever 27 is fixedly connected to the outer end of the connecting rod 26. This makes it easy for the operator to turn the rotating wheel 5 by using the lever, the connecting rod 26 and the small slider 25, thereby realizing the twisting of the metal fuse wire.

[0073] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 In one embodiment of this invention, a method for using a thread-locking fuse twisting tool is also provided, comprising the following steps:

[0074] Step 1: Pass both ends of the metal fuse through the first round hole 7 and the second round hole 8 of the rotating wheel 5, respectively;

[0075] Step 2: Use a flathead screwdriver to adjust the screw depth of the adjusting screw 21, thereby adjusting the tightness of the metal fuse passing through the first round hole 7 and the second round hole 8 of the rotating wheel 5, so that it is taut but can slide freely. Metal fuses of the same diameter only need to be adjusted once, and no further adjustment is required.

[0076] Step 3: Hold the end cap 3 with one hand and pinch the lever 27 with the other hand. Pull the lever 27 toward the end cap 3. The rotating wheel 5 moves along the shaft 1 and rotates under the push of the lever 27. The two strands of the metal fuse wire fall into the double helix groove 2 of the shaft 1 respectively. If they do not fall in, they can be adjusted manually. While the lever 27 drives the rotating wheel 5 to rotate and move, the metal fuse wire rotates in the double helix groove 2.

[0077] Step 4: After reaching the required number of twisted turns, use one hand to hold the rotating wheel 5, and insert the index finger of the other hand into the pull ring 4 and pull it away from the rotating wheel 5. Because the rotating wheel 5 is fixed, the shaft 1 will move away from the rotating wheel 5 and rotate when it is pulled, releasing the two metal fuses. The two metal fuses will naturally twist together.

[0078] Step 5: Bend the device so that the angle between the device and the metal fuse is approximately 90°, and pull it to make it taut;

[0079] Step 6: Use diagonal pliers to cut the metal fuse wire and pull out the metal fuse scrap from the first round hole 7 and the second round hole 8 of this device.

[0080] In this embodiment, compared with traditional manual fuse application, this device improves efficiency by more than 200% under the same fuse application conditions, while protecting the operator from cuts caused by the metal fuse wire.

[0081] In this embodiment, the time to apply the safety lock manually is about 2 to 3 minutes, while the time to apply the safety lock using this device is less than 40 seconds, which can improve efficiency by more than 200% under the same safety lock conditions.

[0082] See Figure 6 In this embodiment, the bottom of the recess 11 of the end cap 3 has an annular retraction groove 28. The diameter of the annular retraction groove 28 is larger than the diameter of the recess 11. The setting of the annular retraction groove 28 facilitates the removal of the cutting tool when machining the internal thread in the recess 11.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A thread-locking fuse twisting tool, characterized in that: Including the shaft; The outer surface of the shaft is a double helical groove, and one end of the shaft is provided with an end cap, which is threaded to one end of the shaft along the axis of the shaft. The end cap is provided with a pull ring at the end away from the shaft, and one end of the pull ring is rotatably and fixedly connected to the end cap away from the shaft. The shaft is provided with a rotating wheel at one end away from the end cover. The inner side of the rotating wheel has double helical teeth. The rotating wheel is rotatably connected to the shaft along the axis of the shaft. The double helical groove and the double helical teeth are adapted to each other. The rotating wheel has a first circular hole and a second circular hole in its axial direction. The first circular hole and the second circular hole are symmetrically distributed on the rotating wheel along the axis of the rotating wheel. Both the first circular hole and the second circular hole penetrate the rotating wheel along its axial direction. The shaft has a connector at one end near the end cap, the connector is integrally formed with the shaft, and there is an annular relief groove between the shaft and the connector; The outer wall of the connector has an external thread, and the end cap has a recessed hole at one end near the shaft. The inner wall of the recessed hole has an internal thread that is adapted to the external thread. The end cap is threaded to the connector through the recessed hole. The end cap has a circular inner hole at the end away from the shaft, the connector has a rotating hole at the end away from the shaft, and the pull ring has a stepped shaft at the end near the end cap. The stepped shaft can rotatably pass through the circular inner hole and fit into the rotating hole. The rotating wheel is provided with a plurality of threaded holes in its radial direction, and the plurality of threaded holes are all connected to the first circular hole and the second circular hole; Each of the aforementioned threaded holes is threaded with an adjusting screw, the inner end of which is a hemispherical head and the outer end of which has a slot. The rotating wheel is also provided with an annular groove in the radial direction. The cross-section of the annular groove is an inverted T-shaped structure. A small slider is adapted to be installed in the annular groove. A connecting rod is vertically fixed to the outer side of the small slider. A lever is fixedly connected to the outer end of the connecting rod.

2. The thread-locking fuse twisting tool according to claim 1, characterized in that: The end of the pull ring away from the shaft is a ring-shaped component.

3. The thread-locking fuse twisting tool according to claim 1, characterized in that: The end of the shaft furthest from the end cap has a rounded end.

4. The thread-locking fuse twisting tool according to claim 1, characterized in that: The shaft has a plurality of pin holes radially opened at the end away from the end cover, and each of the pin holes contains a pin. The outer opening of each of the pin holes is a conical countersunk hole.

5. A thread-locking fuse twisting tool according to claim 1, characterized in that: The first circular hole and the second circular hole have a first conical countersunk hole and a second conical countersunk hole respectively at the ends away from the end cap. The first circular hole and the first conical countersunk hole are coaxially connected to each other, and the second circular hole and the second conical countersunk hole are coaxially connected to each other.

6. A method of using the thread-locking fuse twisting tool according to any one of claims 1 to 5, characterized in that: Includes the following steps: Step 1: Pass both ends of the metal fuse through the first and second circular holes of the rotating wheel, respectively; Step 2: Use a flathead screwdriver to adjust the screwing depth of the adjusting screw, thereby adjusting the tightness of the metal fuse passing through the first and second round holes of the rotating wheel, so that it is taut but can slide freely. Metal fuses of the same diameter only need to be adjusted once, and no further adjustment is required. Step 3: Hold the end cap with one hand and pinch the lever with the other hand, pull the lever toward the end cap. The wheel moves along the axis and rotates under the push of the lever. The two strands of the metal fuse wire fall into the double helix groove of the axis respectively. If they do not fall in, they can be adjusted manually. While the lever drives the wheel to rotate and move, the metal fuse wire rotates in the double helix groove. Step four: After reaching the required number of twisted turns, use one hand to hold the wheel steady, and with the index finger of the other hand, insert it into the pull ring and pull it away from the wheel. Because the wheel is fixed, the shaft moves away from the wheel and rotates when pulled, releasing the two metal fuses, which then naturally twist together. Step 5: Bend the device so that the angle between the device and the metal fuse is approximately 90°, and pull it to make it taut; Step 6: Use diagonal pliers to cut the metal fuse wire and pull out the metal fuse scrap from the first and second round holes of the device.

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