Cable threader for building electrical construction

Abstract

The present invention relates to the field of cable installation technology, and specifically to a cable threader for building electrical construction, which mainly solves the technical problems of low threading efficiency and high labor intensity in existing threading structures. The cable threader for building electrical construction provided by the present invention is provided with a fixing frame, a guide tube, a lead, a cable fixing structure and a driving structure. When in use, the front end of the cable to be threaded is fixed on the lead through the cable fixing structure, and the lead is driven to move forward along the guide tube by the driving structure, so that the lead passes through the threading head at the front end into the wire tube, and the driving structure drives the lead to continue moving until the front end of the lead passes out of the wire tube. This cable threader uses machinery instead of manual labor to complete the operation of threading the lead through the wire tube, which can greatly improve the threading efficiency and also reduce the labor intensity of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of cable installation, in particular to a cable threader for building electrical construction. Background Art

[0002] Building electrical systems include power supply, lighting, telephone, and fire protection. During installation and construction, these systems require the routing of electrical wires, signal lines, and other cables. To protect and extend the life of these cables, they must be routed through conduit. However, because cables are relatively flexible, threading them through conduit is difficult. Therefore, a threading mechanism is required to guide the cables through the conduit.

[0003] When using existing cable threading systems, the front end of the lead wire must be manually threaded through the conduit, the cable is then tied to the rear end of the lead wire, and the cable is finally threaded through the conduit by pulling the lead wire. However, due to the long length of the conduit and the lead wire, manually threading the lead wire through the conduit is time-consuming and labor-intensive. Therefore, a cable threader for building electrical construction that is more efficient and less labor-intensive is needed. Summary of the Invention

[0004] In order to overcome the technical defects of low threading efficiency and high labor intensity in the existing threading structure, the present invention provides a cable threader for building electrical construction.

[0005] The cable threader for building electrical construction provided by the present invention comprises:

[0006] Fixed frame;

[0007] a guide tube, which passes through the fixed frame, is fixed relative to the fixed frame and arranged in the front-to-back direction, and a driving window is provided on a side wall of the guide tube;

[0008] A lead wire, the gap of which is passed through the guide tube, and a threading head is provided at the front end of the lead wire, and the lead wire is used to pass through the threading head into the wire tube;

[0009] A cable fixing structure, which is provided on the lead wire and is used to fix the cable to be passed through on the lead wire;

[0010] The driving structure is arranged on the fixing frame and comprises a driving wheel. The driving wheel is arranged at the driving window and is used for contacting and driving the lead wire to move forward through the driving window.

[0011] Optionally, the lead is a tubular structure, the cable fixing structure is adjacent to the rear of the threading head, and a strip notch is provided on the top of the side wall of the lead, the front end of the strip notch extends to the cable fixing structure and the rear end extends to the rear end face of the lead, and the strip notch is used to press the cable to be threaded into the interior of the lead from the side.

[0012] Optionally, the cable fixing structure includes:

[0013] A connecting barrel, the axis of which is arranged horizontally and the bottom of which is fixedly connected to the rear end surface of the threading head; a truncated cone cavity is formed on the inner side of the front portion of the connecting barrel, and the diameter of the truncated cone cavity increases forward; a plurality of chute grooves are uniformly distributed along the circumference of the cavity wall of the truncated cone cavity, and each chute is arranged along the generatrix of the truncated cone cavity;

[0014] The clamping assembly is provided with multiple sets corresponding to the slide grooves one by one. The clamping assembly includes a slider slidably connected in the corresponding slide groove. A first spring is pressed between the slider and the front end of the slide groove. The slider is fixedly connected with a clamping claw. The clamping claws of multiple sets of clamping assemblies cooperate to clamp and fix the cable to be passed through.

[0015] Optionally, the connecting barrel is connected to the lead wire via a switching barrel, the front end of the switching barrel is rotatably sleeved on the connecting barrel, and the front end of the lead wire is screwed into the switching barrel.

[0016] Optionally, the cable fixing structure also includes a wire removal assembly, which includes a movable ring that is slidably sleeved on the rear of the connecting barrel, and the movable ring is fixedly connected to a plurality of radially arranged connecting strips, each connecting strip extends into the inner side of the connecting barrel through a sliding hole opened on the side wall of the connecting barrel, and the plurality of connecting strips correspond one-to-one with the plurality of clamps, and the rear end of each clamp is connected to the front surface of the corresponding connecting strip and can slide along the length direction of the connecting strip.

[0017] Optionally, the cable threader for building electrical construction further includes a wire pressing structure, which includes:

[0018] an articulated seat fixed to the rear end of the guide tube;

[0019] a rotating shaft mounted on the hinge seat, the rotating shaft being arranged horizontally and perpendicular to the guide tube;

[0020] a connecting rod, which is perpendicular to the rotating shaft, and a front end of the connecting rod is fixed to the rotating shaft;

[0021] a pressure wheel rotatably mounted on the rear end of the connecting rod and located directly above the strip-shaped notch;

[0022] A torsion spring is connected between the rotating shaft and the hinge seat and is used to drive the pressing wheel to press on the lead wire so as to press the cable to be passed through the strip-shaped notch into the lead wire.

[0023] Optionally, the drive windows are provided with two and are symmetrically distributed on both sides of the guide tube, and the drive structure is provided with two drive wheels, which are respectively provided corresponding to the two drive windows and rotate in opposite directions to jointly drive the lead wire forward.

[0024] Optionally, the driving structure includes:

[0025] There are two rotating columns, both of which are vertically installed in the fixed frame, and the two driving wheels are fixedly sleeved on the two rotating columns respectively;

[0026] A driving shaft is rotatably mounted in the fixed frame and arranged horizontally, and the driving shaft is transmission-connected to the two rotating columns.

[0027] Optionally, the rotating column includes:

[0028] A transmission cylinder is rotatably mounted on the fixed frame, and the drive shaft is in transmission connection with the transmission cylinder;

[0029] A transmission rod, which is inserted into the transmission cylinder and can only move axially relative to the transmission cylinder;

[0030] A support rod is rotatably mounted in the fixed frame and is coaxial with the transmission rod, and the driving wheel is fixedly sleeved on the support rod;

[0031] The transmission disc group includes a first transmission disc and a second transmission disc, wherein the first transmission disc is fixed to the bottom end of the transmission rod, and the second transmission disc is fixed to the top end of the support rod. The lower surface of the first transmission disc and the upper surface of the second transmission disc are both provided with a plurality of wedge blocks uniformly distributed along the circumference and in the same direction, and the first transmission disc and the second transmission disc achieve synchronous transmission or disengagement through the wedge blocks.

[0032] Optionally, the driving structure further includes an adjustment component, and the adjustment component includes:

[0033] A fixed plate, which is fixed above the fixed frame through a plurality of guide pillars;

[0034] an adjusting bolt, which passes through the fixing plate and is screwed into the fixing plate;

[0035] a first movable plate, which is slidably sleeved on the guide post, the first movable plate being located below the fixed plate and rotatably connected to the bottom end of the adjusting bolt;

[0036] a second movable plate, which is slidably sleeved on the guide post and located below the first movable plate, and the second movable plate is rotatably connected to the top end of the transmission rod;

[0037] The second spring is pressed between the first movable plate and the second movable plate.

[0038] The technical solution provided by the present invention has the following advantages compared with the prior art:

[0039] The cable threader for building electrical construction provided by the present invention comprises a fixing frame, a guide tube, a lead wire, a cable fixing structure, and a driving structure. During use, the front end of the cable to be threaded is fixed to the lead wire via the cable fixing structure. The lead wire is driven forward along the guide tube by the driving structure, thereby allowing the lead wire to pass through the threading head at the front end into the conduit. The driving structure drives the lead wire to continue moving until the front end of the lead wire passes through the conduit. This cable threader uses a machine to replace manual labor to complete the threading operation of the lead wire through the conduit, which can significantly improve threading efficiency while also reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0042] Figure 1 A schematic diagram showing a first perspective view of a cable threader according to an embodiment of the present invention;

[0043] Figure 2 A schematic diagram showing a second perspective of the cable threader according to an embodiment of the present invention;

[0044] Figure 3 A schematic diagram showing a cable threader from a third perspective according to an embodiment of the present invention;

[0045] Figure 4 A schematic diagram showing the structure of the lead wire in an embodiment of the present invention;

[0046] Figure 5 A schematic diagram showing the assembly of a threading head and a cable fixing structure according to an embodiment of the present invention;

[0047] Figure 6 A schematic cross-sectional view showing a threading head and a cable fixing structure according to an embodiment of the present invention;

[0048] Figure 7 express Figure 6 A partial enlarged view of point A in the middle;

[0049] Figure 8 A schematic diagram showing the assembly of a wire pressing structure according to an embodiment of the present invention;

[0050] Figure 9 A schematic cross-sectional view showing a wire pressing structure according to an embodiment of the present invention;

[0051] Figure 10 A schematic cross-sectional view of a cable threader according to an embodiment of the present invention is shown;

[0052] Figure 11 express Figure 10 A partial enlarged view of point B in the middle;

[0053] Figure 12 A schematic diagram showing an assembly of a drive structure according to an embodiment of the present invention;

[0054] Figure 13 FIG. 2 is an exploded schematic diagram showing a transmission disc assembly according to an embodiment of the present invention.

[0055] In the picture:

[0056] 1. Fixing frame; 11. Square frame; 12. Vertical plate; 13. Base; 14. Strip fixing seat; 2. Guide tube; 21. Drive window; 3. Lead wire; 31. Threading head; 311. Ball bearing; 32. Strip notch; 4. Cable fixing structure; 41. Connecting barrel; 411. Cone cavity; 412. Slide groove; 413. Slide hole; 42. Slider; 43. First spring; 44. Clamping claw; 441. Conical mouth; 442. Bump; 45. Adapter tube; 46. Moving ring; 47. Connecting strip; 5. Drive structure; 51. Drive wheel; 52. Rotation Column; 521, transmission cylinder; 522, transmission rod; 523, support rod; 524, first transmission plate; 525, second transmission plate; 526, wedge block; 53, drive shaft; 54, adjustment assembly; 541, fixed plate; 542, guide column; 543, adjustment bolt; 544, first movable plate; 545, second movable plate; 546, second spring; 55, motor; 56, worm gear; 57, worm; 6, wire pressing structure; 61, hinged seat; 62, rotating shaft; 63, connecting rod; 64, pressure wheel; 65, torsion spring; 100, cable to be passed through. DETAILED DESCRIPTION

[0057] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0058] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0059] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all the embodiments.

[0060] The following combination Figures 1 to 13 Specific embodiments of the present invention are described in detail.

[0061] This embodiment provides a cable threader for building electrical construction, including a fixing frame 1, a guide tube 2, a lead wire 3, a cable fixing structure 4 and a driving structure 5.

[0062] The fixing frame 1 is mainly used to provide hardware support for other components.

[0063] Specifically, such as Figure 1 As shown, the main body of the fixed frame 1 is a square frame 11, and the opening of the square frame 11 faces the front-to-back direction. The guide tube 2 and the lead wire 3 are arranged through the inner side of the square frame 11. The bottom of the square frame 11 is fixed to the base 13 through two vertical plates 12. The vertical plates 12 can increase the distance between the square frame 11 and the base 13, thereby avoiding interference between the guide tube 2 and the lead wire 3 and the base 13 when threading.

[0064] The guide tube 2 passes through the fixed frame 1 . The guide tube 2 is fixed relative to the fixed frame 1 and arranged along the front-to-back direction. A driving window 21 is provided on the side wall of the guide tube 2 .

[0065] Specifically, such as Figure 10 As shown, a strip-shaped fixing seat 14 is provided at the inner bottom of the fixed frame 1. The strip-shaped fixing seat 14 is arranged along the front-to-back direction. The upper surface of the strip-shaped fixing seat 14 is set to be an arc surface adapted to the guide tube 2. The bottom of the guide tube 2 is supported on the arc surface to achieve relative fixation of the guide tube 2 and the fixed frame 1.

[0066] It should be noted that the purpose of providing the driving window 21 is to enable the driving wheel 51 of the driving structure 5 to directly contact the lead 3, so that the driving wheel 51 can drive the lead 3 to move forward.

[0067] Specifically, such as Figure 1 As shown, there are two driving windows 21 symmetrically distributed on both sides of the guide tube 2 . The driving windows 21 distributed on both sides can make the two sides of the lead 3 bear force more evenly, which is more conducive to the smooth advancement of the lead 3 .

[0068] The lead wire 3 is passed through the guide tube 2 at a certain interval, and a threading head 31 is provided at the front end of the lead wire 3 , so that the lead wire 3 is passed through the threading head 31 into the wire tube.

[0069] It is easy to understand that the lead wire 3 is used to pass through the wire tube, so the outer diameter of the lead wire 3 should be smaller than the inner diameter of the wire tube.

[0070] Specifically, such as Figure 2 As shown, the threading head 31 is in the shape of a bullet head as a whole, so as to facilitate threading into the wire tube.

[0071] Further, such as Figure 2 As shown, in this embodiment, a plurality of balls 311 are arranged on the surface of the threading head 31. The balls 311 can reduce the friction between the threading head 31 and the wire tube, and are more conducive to the movement of the threading head 31 in the wire tube.

[0072] It should be noted that while the wire tubes are arranged in a straight line as much as possible during threading, the actual arrangement of the wire tubes is not necessarily a perfect straight line. Therefore, to ensure that the lead wire 3 can be smoothly threaded into the wire tube, the lead wire 3 can be made of a flexible material such as rubber or silicone. The flexible material can deform to a certain extent to better match the wire tube. However, it should be noted that since the lead wire 3 is also driven forward by the drive wheel 51 of the drive structure 5, the flexible material should not be too soft, but should be able to be driven forward.

[0073] The cable fixing structure 4 is provided on the lead wire 3 and is used to fix the cable 100 to be passed through on the lead wire 3 .

[0074] In the specific design, the cable 100 to be threaded can be fixed at the front end or rear end of the lead 3 through the cable fixing structure 4. When the cable 100 to be threaded is fixed at the front end of the lead 3, after the front end of the lead 3 passes through the wire tube, the cable also passes through the wire tube, so it is only necessary to remove the lead 3; when the cable 100 to be threaded is fixed at the rear end of the lead 3, after the front end of the lead 3 passes through the wire tube, it is necessary to manually pull the lead 3 to make the rear end of the lead 3 pass through the wire tube, and then the cable can pass through the wire tube. Compared with the two methods, although the former also needs to remove the lead 3 after the front end of the lead 3 passes through the wire tube, the operation of removing the lead 3 does not need to take into account the state of the cable compared to the operation of pulling the lead 3 to guide the cable to continue threading, and the operation is more convenient and more efficient. Therefore, this embodiment adopts the method of fixing the cable 100 to be threaded at the front end of the lead 3, and the specific structure designed is as follows:

[0075] like Figure 4 and Figure 5 As shown, the lead 3 is a tubular structure, the cable fixing structure 4 is adjacent to the rear of the threading head 31, and a strip notch 32 is provided on the top of the side wall of the lead 3. The front end of the strip notch 32 extends to the cable fixing structure 4 and the rear end extends to the rear end surface of the lead 3. The strip notch 32 is used to press the cable 100 to be threaded into the interior of the lead 3 from the side.

[0076] It should be noted that, since the lead 3 is long, if the cable 100 to be threaded is inserted into the lead 3 from the rear end of the lead 3 and continues to move forward until it reaches the front end of the lead 3, the threading operation of the cable 100 to be threaded into the lead 3 will also consume a lot of manpower and energy. The embodiment shown fixes the cable 100 to be threaded at the front end of the lead 3 while improving the lead 3 by opening a strip-shaped notch 32 at the top of its side wall. The cable 100 to be threaded can be pressed into the interior of the lead 3 from the side through the strip-shaped notch 32, thereby greatly improving the threading efficiency.

[0077] It should be noted that the lead wire 3 is made of flexible material as mentioned above, so that the lead wire 3 can better match the wire tube when passing through the wire tube and moving forward. In addition, the lead wire 3 made of flexible material is also more conducive to the lateral pressing of the cable 100 to be passed through.

[0078] Specifically, such as Figures 5 to 7 As shown, the cable fixing structure 4 includes a connecting barrel 41 and a clamping assembly; the axis of the connecting barrel 41 is arranged horizontally and the bottom of the barrel is fixedly connected to the rear end face of the threading head 31, a conical cavity 411 is formed on the inner side of the front part of the connecting barrel 41, and the diameter of the conical cavity 411 increases forward, and a plurality of slide grooves 412 are evenly distributed along the circumference of the cavity wall of the conical cavity 411, and each slide groove 412 is arranged along the busbar of the conical cavity 411; the clamping assembly is provided with multiple sets and corresponds one to one with the slide groove 412, the clamping assembly includes a slider 42 slidably connected to the corresponding slide groove 412, a first spring 43 is pressed between the slider 42 and the front end of the slide groove 412, the slider 42 is fixedly connected with a clamping claw 44, and the clamping claws 44 of multiple sets of clamping assemblies cooperate to clamp and fix the cable 100 to be threaded. During operation, the cable 100 to be threaded is pushed forward, the cable 100 to be threaded contacts the clamping jaws 44 and applies a forward thrust to the clamping jaws 44, and the slider 42 moves forward along the slide groove 412 under the action of this thrust, so that the clamping jaws 44 of the multiple sets of clamping assemblies move away from each other, thereby allowing the cable to be threaded to extend between the multiple clamping jaws 44; when the cable 100 to be threaded extends between the multiple clamping jaws 44, the slider 42 loses its thrust, and at the same time, the slider 42 moves backward along the slide groove 412 under the action of the first spring 43, so that the clamping jaws 44 of the multiple sets of clamping assemblies approach each other, thereby clamping and fixing the cable 100 to be threaded.

[0079] More specifically, Figure 6 and Figure 7As shown, the rear end of the clamping jaw 44 is provided with a tapered opening 441, which is more conducive to the cable 100 to be threaded being inserted between the multiple clamping jaws 44; the surface of the clamping jaw 44 for contacting the cable 100 to be threaded is set as an arc surface to ensure the clamping force; the arc surface is provided with multiple protrusions 442 to increase the friction between the clamping jaw 44 and the cable 100 to be threaded, further ensuring the clamping force.

[0080] More specifically, Figure 6 As shown, the connecting barrel 41 is connected to the lead wire 3 via a switching barrel 45 . The front end of the switching barrel 45 is rotatably sleeved on the connecting barrel 41 , and the front end of the lead wire 3 is screwed into the switching barrel 45 .

[0081] Further, such as Figures 5 to 7 As shown, the cable fixing structure 4 also includes a wire removal assembly, which includes a movable ring 46 that is slidably sleeved on the rear part of the connecting barrel 41. The movable ring 46 is fixedly connected to a plurality of radially arranged connecting strips 47. Each connecting strip 47 extends into the inner side of the connecting barrel 41 through a sliding hole 413 provided on the side wall of the connecting barrel 41. The plurality of connecting strips 47 correspond one-to-one with the plurality of clamping claws 44. The rear end of each clamping claw 44 is connected to the front surface of the corresponding connecting strip 47 and can slide along the length direction of the connecting strip 47. When the cable 100 to be threaded extends from the front end of the wire tube, the movable ring 46 is pushed forward, and the movable ring 46 drives the clamping claw 44 and the slider 42 to move forward. As the slider 42 moves along the slide groove 412, the plurality of clamping claws 44 move away from each other, thereby disengaging from the cable 100 to be threaded. Then, the threading head 31 is moved forward as a whole to achieve the detachment of the cable 100 to be threaded from the cable fixing structure 4, thereby completing the removal of the lead 3. The wire removal assembly added in this embodiment can quickly separate the cable 100 to be threaded from the lead wire 3, further improving the threading efficiency.

[0082] Further, such as Figure 8 and Figure 9As shown, the cable threader for building electrical construction also includes a wire pressing structure 6, which includes a hinged seat 61, a rotating shaft 62, a connecting rod 63, a pressure wheel 64 and a torsion spring 65; the hinged seat 61 is fixed to the rear end of the guide tube 2; the rotating shaft 62 is installed on the hinged seat 61, and the rotating shaft 62 is horizontally arranged and perpendicular to the guide tube 2; the connecting rod 63 is perpendicular to the rotating shaft 62, and the front end of the connecting rod 63 is fixed on the rotating shaft 62; the pressure wheel 64 is rotatably installed at the rear end of the connecting rod 63 and is located directly above the strip notch 32; the torsion spring 65 is connected between the rotating shaft 62 and the hinged seat 61 and is used to drive the pressure wheel 64 to press on the lead 3 to press the cable 100 to be threaded into the lead 3 through the strip notch 32. During operation, first, manually insert the portion of the cable to be threaded 100 between the wire pressing structure 6 and the cable fixing structure 4 into the lead 3 and fix the cable to be threaded 100 and the lead 3 through the cable fixing structure 4. Then, when the lead 3 is driven forward, the portion of the cable to be threaded 100 behind the wire pressing structure 6 can be pressed into the lead 3 by the pressure wheel 64, which further saves manpower and improves operation efficiency. In addition, the wire pressing structure 6 has another advantage: when the portion of the cable to be threaded 100 behind the wire pressing structure 6 is suddenly tightened by external force, the pressure wheel 64 cooperates with the torsion spring 65 to provide a certain buffer for the tightened cable to be threaded 100, thereby preventing the suddenly tightened cable to be threaded 100 from being damaged by the guide tube 2 and other structures due to violent impact when it is pulled to the outside of the lead 3 through the strip notch 32.

[0083] The driving structure 5 is disposed on the fixing frame 1 and includes a driving wheel 51 . The driving wheel 51 is disposed at the driving window 21 and is used to contact and drive the lead 3 forward through the driving window 21 .

[0084] Specifically, such as Figure 10 As shown, the drive structure 5 is provided with two drive wheels 51, which are respectively arranged corresponding to the two drive windows 21 and rotate in opposite directions to jointly drive the lead 3 forward. The two drive wheels 51 make the force on the lead 3 more uniform, which is more conducive to maintaining the stability of the lead 3 when moving forward.

[0085] More specifically, Figures 10 to 12 As shown, the drive structure 5 includes a rotating column 52 and a drive shaft 53; two rotating columns 52 are provided and are both vertically mounted in the fixed frame 1, and two drive wheels 51 are fixedly sleeved on the two rotating columns 52 respectively; the drive shaft 53 is rotatably mounted in the fixed frame 1 and arranged horizontally, and the drive shaft 53 is transmission-connected to the two rotating columns 52. During operation, the rotation of the drive shaft 53 drives the two rotating columns 52 to rotate, thereby driving the two drive wheels 51 to rotate. In detail, the drive shaft 53 is connected to a motor 55, which drives the drive shaft 53 to rotate; the parts of the drive shaft 53 corresponding to the two rotating columns 52 are each provided with a worm 57, and the rotating column 52 is provided with a worm wheel 56. The drive shaft 53 and the rotating column 52 are connected through the cooperation of the worm 57 and the worm wheel 56.

[0086] Details, such as Figure 12 and Figure 13 As shown, the rotating column 52 includes a transmission cylinder 521, a transmission rod 522, a support rod 523 and a transmission disc group; the transmission cylinder 521 is rotatably mounted on the fixed frame 1, and the driving shaft 53 is transmission-connected to the transmission cylinder 521; the transmission rod 522 is inserted in the transmission cylinder 521 and can only move axially relative to the transmission cylinder 521; the support rod 523 is rotatably mounted in the fixed frame 1 and is coaxial with the transmission rod 522, and the driving wheel 51 is fixedly sleeved on the support rod 523; the transmission disc group includes a first transmission disc 524 and a second transmission disc 525, the first transmission disc 524 is fixed to the bottom end of the transmission rod 522, and the second transmission disc 525 is fixed to the top end of the support rod 523. The lower surface of the first transmission disc 524 and the upper surface of the second transmission disc 525 are both provided with a plurality of wedge blocks 526 that are uniformly distributed along the circumference and have the same direction. The first transmission disc 524 and the second transmission disc 525 are synchronously driven or disengaged through the wedge blocks 526. During operation, the rotation of the drive shaft 53 drives the transmission cylinder 521 to rotate, and the rotation of the transmission cylinder 521 drives the transmission rod 522 and the first transmission plate 524 to rotate: when the driving wheel 51 on the support rod 523 is subjected to a smaller load, the first transmission plate 524 and the second transmission plate 525 are transmitted through the wedge block 526, thereby realizing the rotation of the support rod 523 and the driving wheel 51; when the threading head 31 encounters an obstacle and causes the driving wheel 51 to be subjected to a larger load, the first transmission plate 524 moves upward along the wedge block 526, so that the first transmission plate 524 and the second transmission plate 525 are disengaged from the transmission, and the first transmission plate 524 can rotate independently, thereby avoiding the driving wheel 51 from slipping, thereby reducing the wear of the driving wheel 51 on the lead 3. In addition, when the first transmission disk 524 rotates by itself to pass over the group of wedge blocks 526, the first transmission disk 524 falls and continues to rotate. When the first transmission disk 524 is connected to the second transmission disk 525 again through the next group of wedge blocks 526, the first transmission disk 524 will generate an impact force on the second transmission disk 525, which is more conducive to passing over obstacles.

[0087] It is easy to understand that the transmission rod 522 can only move axially relative to the transmission cylinder 521, which can be achieved by a limiting structure or shape design, for example Figure 13 As shown in , in this embodiment, the cross-sectional shape of the inner cavity of the transmission cylinder 521 and the cross-sectional shape of the transmission rod 522 are both designed to be regular hexagons so as to be able to rotate as a whole and move relative to the axial direction.

[0088] More details, such as Figure 13 As shown, in order to achieve relative limiting of the first transmission plate 524 and the second transmission plate 525, this embodiment uses the barrel bottom of the barrel structure as the second transmission plate 525, sets the wedge block 526 on the barrel bottom of the barrel structure, and places the first transmission plate 524 in the barrel structure to complete the limiting.

[0089] Further, such as Figure 12 As shown, the driving structure 5 also includes an adjusting component 54, which includes a fixed plate 541, an adjusting bolt 543, a first movable plate 544, a second movable plate 545 and a second spring 546; the fixed plate 541 is fixed above the fixed frame 1 through a plurality of guide columns 542; the adjusting bolt 543 passes through the fixed plate 541 and is screwed into the fixed plate 541; the first movable plate 544 is slidably sleeved on the guide column 542, the first movable plate 544 is located below the fixed plate 541 and is rotatably connected to the bottom end of the adjusting bolt 543; the second movable plate 545 is slidably sleeved on the guide column 542 and is located below the first movable plate 544, the second movable plate 545 is rotatably connected to the top end of the transmission rod 522; the second spring 546 is pressed between the first movable plate 544 and the second movable plate 545. During adjustment, screwing the adjusting bolt 543 drives the first movable plate 544 to rise and fall along the guide column 542, thereby adjusting the compression amount of the second spring 546, and then adjusting the damping force required to overcome the upward movement of the first transmission plate 524. This can adapt to the usage requirements in different environments and improve the practicality of this structure.

[0090] The method of using the cable threader for building electrical construction of this embodiment is as follows:

[0091] S1. The lead 3 is passed through the guide tube 2 and extends from the front end of the guide tube 2;

[0092] S2. Screw the adapter tube 45 to achieve the connection between the lead 3 and the adapter tube 45, thereby achieving the connection between the threading head 31 and the lead 3;

[0093] S3. The cable 100 is pressed into the lead 3 from the side, and the cable 100 is transported forward so that the cable 100 is abutted against the jaws 44 of the cable fixing structure 4;

[0094] S4. The cable to be worn is pushed forward using the jaws 44 100 until it extends between the plurality of jaws 44 and is clamped and fixed by the plurality of jaws 44;

[0095] S5. Tighten the adjusting bolt 543 as needed to adjust the compression amount of the second spring 546 to an appropriate value;

[0096] S6. Place the wire tube in front of the lead 3, start the drive shaft 53, and drive the lead 3 forward through the drive wheel 51;

[0097] S7. When the front end of the lead 3 extends from the wire tube, the movable ring 46 is pushed forward so that the cable 100 to be passed is separated from the lead 3;

[0098] S8. Move the threading head 31, the adapter tube 45 and the lead wire 3 forward as a whole until they are pulled out of the wire tube, and the threading operation is completed.

[0099] The above description is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be included in the scope of protection of the claims.

Claims

1. A cable threader for building electrical construction, characterized in that: include: Fixed frame (1); A guide tube (2) passing through the fixed frame (1), the guide tube (2) being fixed relative to the fixed frame (1) and arranged in a front-to-back direction, and a driving window (21) being provided on a side wall of the guide tube (2); A lead wire (3) is provided with a gap in the guide tube (2), and a threading head (31) is provided at the front end of the lead wire (3), and the lead wire (3) is used to pass through the threading head (31) into the wire tube; A cable fixing structure (4) is provided on the lead wire (3) and is used to fix the cable (100) to be passed through on the lead wire (3); A driving structure (5) is provided on the fixed frame (1) and includes a driving wheel (51), wherein the driving wheel (51) is provided at the driving window (21) and is used to contact and drive the lead (3) forward through the driving window (21); The lead wire (3) is a tubular structure, the cable fixing structure (4) is adjacent to the rear of the threading head (31), a strip-shaped notch (32) is provided at the top of the side wall of the lead wire (3), the front end of the strip-shaped notch (32) extends to the cable fixing structure (4) and the rear end extends to the rear end face of the lead wire (3), and the strip-shaped notch (32) is used to press the cable (100) to be threaded into the interior of the lead wire (3) from the side; The cable fixing structure (4) includes a connecting barrel (41) and a clamping assembly, the axis of the connecting barrel (41) is arranged horizontally and the barrel bottom is fixedly connected to the rear end face of the threading head (31), a truncated cone cavity (411) is formed on the inner side of the front part of the connecting barrel (41), and the diameter of the truncated cone cavity (411) increases forward, a plurality of chute grooves (412) are uniformly distributed along the circumference on the cavity wall of the truncated cone cavity (411), each chute (412) is arranged along the busbar of the truncated cone cavity (411), the clamping assembly is provided with multiple sets and corresponds to the chute (412) one by one, the clamping assembly includes a slider (42) slidably connected in the corresponding chute (412), a first spring (43) is pressed between the slider (42) and the front end of the chute (412), the slider (42) is fixedly connected with a clamping claw (44), and the clamping claws (44) of the multiple sets of clamping assemblies cooperate to clamp and fix the cable (100) to be threaded.

2. The cable threader for building electrical construction according to claim 1, characterized in that: The connecting barrel (41) is connected to the lead wire (3) via a switching barrel (45), the front end of the switching barrel (45) is rotatably sleeved on the connecting barrel (41), and the front end of the lead wire (3) is screwed into the switching barrel (45).

3. The cable threader for building electrical construction according to claim 1 or 2, characterized in that: The cable fixing structure (4) also includes a wire removal assembly, which includes a movable ring (46) slidably sleeved on the rear part of the connecting barrel (41), and the movable ring (46) is fixedly connected with a plurality of radially arranged connecting strips (47), each connecting strip (47) extends into the inner side of the connecting barrel (41) through a sliding hole (413) opened on the side wall of the connecting barrel (41), and the plurality of connecting strips (47) correspond to the plurality of clamping claws (44) one by one, and the rear end of each clamping claw (44) is connected to the front surface of the corresponding connecting strip (47) and can slide along the length direction of the connecting strip (47).

4. The cable threader for building electrical construction according to claim 1, characterized in that: It also includes a line pressing structure (6), which includes: A hinge seat (61) fixed to the rear end of the guide tube (2); A rotating shaft (62) is mounted on the hinge seat (61), and the rotating shaft (62) is arranged horizontally and perpendicular to the guide tube (2); a connecting rod (63) perpendicular to the rotating shaft (62), with a front end of the connecting rod (63) fixed to the rotating shaft (62); A pressure wheel (64) is rotatably mounted on the rear end of the connecting rod (63) and is located directly above the strip-shaped notch (32); A torsion spring (65) is connected between the rotating shaft (62) and the hinge seat (61) and is used to drive the pressing wheel (64) to press the lead (3) to press the cable (100) to be passed through the strip-shaped notch (32) into the lead (3).

5. The cable threader for building electrical construction according to claim 1, characterized in that: The drive windows (21) are provided with two and are symmetrically distributed on both sides of the guide tube (2). The drive structure (5) is provided with two drive wheels (51). The two drive wheels (51) are respectively provided corresponding to the two drive windows (21) and rotate in opposite directions to jointly drive the lead wire (3) forward.

6. The cable threader for building electrical construction according to claim 5, characterized in that: The driving structure (5) comprises: Two rotating columns (52) are provided and are both vertically mounted in the fixed frame (1), and two driving wheels (51) are respectively fixedly sleeved on the two rotating columns (52); A drive shaft (53) is rotatably mounted in the fixed frame (1) and arranged horizontally, and the drive shaft (53) is transmission-connected to the two rotating columns (52).

7. The cable threader for building electrical construction according to claim 6, characterized in that: The rotating column (52) comprises: A transmission cylinder (521) is rotatably mounted on the fixed frame (1), and the drive shaft (53) is in transmission connection with the transmission cylinder (521); A transmission rod (522) is inserted into the transmission cylinder (521) and can only move axially relative to the transmission cylinder (521); A support rod (523) is rotatably mounted in the fixed frame (1) and is coaxial with the transmission rod (522), and the driving wheel (51) is fixedly sleeved on the support rod (523); A transmission disc assembly comprises a first transmission disc (524) and a second transmission disc (525), wherein the first transmission disc (524) is fixed to the bottom end of the transmission rod (522), and the second transmission disc (525) is fixed to the top end of the support rod (523), and the lower surface of the first transmission disc (524) and the upper surface of the second transmission disc (525) are both provided with a plurality of wedge blocks (526) uniformly distributed along the circumference and oriented in the same direction, and the first transmission disc (524) and the second transmission disc (525) achieve synchronous transmission or disengagement through the wedge blocks (526).

8. The cable threader for building electrical construction according to claim 7, characterized in that: The driving structure (5) further includes an adjusting component (54), wherein the adjusting component (54) includes: A fixed plate (541) fixed above the fixed frame (1) via a plurality of guide posts (542); an adjusting bolt (543) passing through the fixing plate (541) and being screwed into the fixing plate (541); a first movable plate (544) which is slidably sleeved on the guide column (542); the first movable plate (544) is located below the fixed plate (541) and is rotatably connected to the bottom end of the adjusting bolt (543); a second movable plate (545) which is slidably sleeved on the guide post (542) and is located below the first movable plate (544); the second movable plate (545) is rotatably connected to the top end of the transmission rod (522); The second spring (546) is pressed between the first movable plate (544) and the second movable plate (545).

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