Cable threading device for building electrical construction

Abstract

The invention relates to the technical field of cable installation, in particular to a cable threading device for building electrical construction, and mainly solves the technical problems that an existing threading structure is low in threading efficiency and high in labor intensity. The cable threading device for building electrical construction is provided with the fixing frame, the guide pipe, the lead, the cable fixing structure and the driving structure, when the cable threading device is used, the front end of a cable to be threaded is fixed to the lead through the cable fixing structure, and the lead is driven by the driving structure to move forwards along the guide pipe; and the driving structure drives the lead to continuously move until the front end of the lead penetrates out of the wire pipe. According to the cable threading device, the operation that the lead penetrates through the wire pipe is completed mechanically instead of manually, the threading efficiency can be greatly improved, and meanwhile the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable installation, and particularly relates to a cable threading device for building electrical construction. Background Art

[0002] Building electricity includes electrical systems such as power supply, lighting, telephone, and fire protection. When installing and constructing these electrical systems, it is necessary to lay cables such as wires and signal wires. In order to protect the cables and extend their service life, the cables need to be threaded through the wire pipes. However, since the cables are relatively soft, it is difficult to pass them through the wire pipes, so a threading structure needs to be used to guide the cables through the wire pipes when threading.

[0003] When the existing threading structure is in use, it is necessary for workers to first pass the front end of the lead wire through the wire pipe, then tie the cable to the rear end of the lead wire, and finally pull the lead wire to make the cable pass through the wire pipe, so as to achieve the purpose of threading. However, since both the wire pipe and the lead wire are relatively long, the operation of manually passing the lead wire through the wire pipe is time-consuming and laborious. Therefore, a cable threading device for building electrical construction with higher threading efficiency and lower labor intensity is needed. Summary of the Invention

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

[0005] The cable threading device for building electrical construction provided by the present invention includes: A fixed frame; A guiding pipe, which penetrates through the fixed frame, the guiding pipe is fixed relative to the fixed frame and is arranged in the front-rear direction, and a driving window is provided on the side wall of the guiding pipe; A lead wire, which is inserted into the guiding pipe with a gap, a threading head is provided at the front end of the lead wire, and the lead wire is used to penetrate into the wire pipe through the threading head; A cable fixing structure, which is arranged on the lead wire and is used to fix the cable to be threaded on the lead wire; A driving structure, which is arranged on the fixed frame and includes a driving wheel, the driving wheel is arranged at the driving window and is used to contact and drive the lead wire to move forward through the driving window.

[0006] Optionally, the lead wire is a tubular structure, the cable fixing structure is adjacent to the rear of the threading head, a strip-shaped notch is opened at the top of the side wall of the lead wire, the front end of the strip-shaped notch extends to the cable fixing structure and the rear end extends to the rear end face of the lead wire, and the strip-shaped notch is used to press the cable to be threaded into the interior of the lead wire from the side.

[0007] Optionally, the cable fixing structure includes: A connecting barrel, whose axis is horizontally arranged and the bottom of the barrel is fixedly connected to the rear end face of the threading head. A frustum cavity is formed inside the front part of the connecting barrel, and the diameter of the frustum cavity increases forward. A plurality of sliding grooves are evenly distributed along the circumference on the cavity wall of the frustum cavity, and each sliding groove is arranged along the generatrix of the frustum cavity; A clamping assembly, which has multiple sets and corresponds to the sliding grooves one by one. The clamping assembly includes a slider slidably connected in the corresponding sliding groove. A first spring is pressed between the slider and the front end of the sliding groove. The slider is fixedly connected with a clamping jaw, and the clamping jaws of multiple sets of clamping assemblies cooperate to clamp and fix the cable to be threaded.

[0008] Optionally, the connecting barrel and the lead wire are connected through an adapter barrel. The front end of the adapter barrel is rotatably sleeved on the connecting barrel, and the front end of the lead wire is screwed into the adapter barrel.

[0009] Optionally, the cable fixing structure further includes a wire removing assembly. The wire removing assembly includes a moving ring slidably sleeved on the rear part of the connecting barrel. The moving ring is fixedly connected with a plurality of connecting bars arranged radially. Each connecting bar extends into the inner side of the connecting barrel through a sliding hole formed in the side wall of the connecting barrel. The plurality of connecting bars correspond to the plurality of clamping jaws one by one. The rear end of each clamping jaw is connected to the front surface of the corresponding connecting bar and can slide along the length direction of the connecting bar.

[0010] Optionally, the cable threading device for building electrical construction further includes a wire pressing structure. The wire pressing structure includes: A hinge seat, which is fixed at the rear end of the guiding tube; A rotating shaft, which is installed on the hinge seat. The rotating shaft is horizontally arranged and perpendicular to the guiding tube; A connecting rod, which is perpendicular to the rotating shaft, and the front end of the connecting rod is fixed on the rotating shaft; A pressing wheel, which is rotatably installed at the rear end of the connecting rod and is located directly above the strip-shaped notch; A torsion spring, which is connected between the rotating shaft and the hinge seat and is used to drive the pressing wheel to press against the lead wire to press the cable to be threaded into the lead wire through the strip-shaped notch.

[0011] Optionally, there are two driving windows, which are symmetrically distributed on both sides of the guiding tube. The driving structure has two driving wheels, and the two driving wheels are respectively arranged corresponding to the two driving windows and have opposite rotation directions to jointly drive the lead wire to move forward.

[0012] Optionally, the driving structure includes: Two rotating columns, which are both vertically installed in the fixed frame, and the two driving wheels are respectively fixedly sleeved on the two rotating columns; A driving shaft, which is rotatably installed in the fixed frame and is horizontally arranged. The driving shaft is in transmission connection with the two rotating columns.

[0013] Optionally, the rotating column includes: A transmission cylinder, which is rotatably installed on the fixed frame, and the drive shaft is in transmission connection with the transmission cylinder; A transmission rod, which is inserted into the transmission cylinder and can only axially move relative to the transmission cylinder; A support rod, which is rotatably installed in the fixed frame and is coaxial with the transmission rod, and the driving wheel is fixedly sleeved on the support rod; A transmission disc group, which includes a first transmission disc and a second transmission disc. The first transmission disc is fixed at the bottom end of the transmission rod, and the second transmission disc is fixed at the top end of the support rod. A plurality of wedge-shaped blocks are arranged on the lower surface of the first transmission disc and the upper surface of the second transmission disc, which are evenly distributed along the circumference and have the same orientation. The first transmission disc and the second transmission disc are synchronously driven or disengaged through the wedge-shaped blocks.

[0014] Optionally, the driving structure further includes an adjusting assembly, and the adjusting assembly includes: A fixed disc, which is fixed above the fixed frame through a plurality of guide posts; An adjusting bolt, which penetrates the fixed disc and is screwed into the fixed disc; A first moving disc, which is slidably sleeved on the guide posts. The first moving disc is located below the fixed disc and is rotatably connected to the bottom end of the adjusting bolt; A second moving disc, which is slidably sleeved on the guide posts and is located below the first moving disc. The second moving disc is rotatably connected to the top end of the transmission rod; A second spring, which is pressed between the first moving disc and the second moving disc.

[0015] The technical solution provided by the present invention has the following advantages compared with the prior art: The cable threading device for building electrical construction provided by the present invention is provided with a fixed 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 through the cable fixing structure, and the driving structure drives the lead wire to move forward along the guide tube, so that the lead wire passes through the threading head at the front end and penetrates into the wire tube. The driving structure drives the lead wire to continuously move until the front end of the lead wire passes through the wire tube. This cable threading device uses machinery to replace manual operation to complete the operation of threading the lead wire through the wire tube, which can greatly improve the threading efficiency and reduce the labor intensity of workers at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It shows a schematic diagram of the first perspective of the cable threader in the embodiment of the present invention; Figure 2 It shows a schematic diagram of the second perspective of the cable threader in the embodiment of the present invention; Figure 3 It shows a schematic diagram of the third perspective of the cable threader in the embodiment of the present invention; Figure 4 It shows a schematic diagram of the structure of the lead wire in the embodiment of the present invention; Figure 5 It shows an assembly schematic diagram of the thread head and the cable fixing structure in the embodiment of the present invention; Figure 6 It shows a cross-sectional schematic diagram of the thread head and the cable fixing structure in the embodiment of the present invention; Figure 7 It shows Figure 6 a partial enlarged view of part A in Figure 8 It shows an assembly schematic diagram of the wire pressing structure in the embodiment of the present invention; Figure 9 It shows a cross-sectional schematic diagram of the wire pressing structure in the embodiment of the present invention; Figure 10 It shows a cross-sectional schematic diagram of the cable threader in the embodiment of the present invention; Figure 11 It shows Figure 10 a partial enlarged view of part B in Figure 12 It shows an assembly schematic diagram of the driving structure in the embodiment of the present invention; Figure 13 It shows an exploded view of the transmission disk group in the embodiment of the present invention.

[0019] In the figure: 1. Fixed frame; 11. Square frame; 12. Vertical plate; 13. Base; 14. Strip-shaped fixed seat; 2. Guide tube; 21. Driving window; 3. Lead wire; 31. Thread-passing head; 311. Ball; 32. Strip-shaped notch; 4. Cable fixing structure; 41. Connecting barrel; 411. Frustum cavity; 412. Chute; 413. Slide hole; 42. Slide block; 43. First spring; 44. Claw; 441. Tapered opening; 442. Protruding point; 45. Adapter tube; 46. Moving ring; 47. Connecting bar; 5. Driving structure; 51. Driving wheel; 52. Rotating column; 521. Transmission tube; 522. Transmission rod; 523. Support rod; 524. First transmission disk; 525. Second transmission disk; 526. Wedge block; 53. Driving shaft; 54. Adjusting component; 541. Fixed disk; 542. Guide post; 543. Adjusting bolt; 544. First moving disk; 545. Second moving disk; 546. Second spring; 55. Motor; 56. Worm gear; 57. Worm; 6. Cable pressing structure; 61. Hinge seat; 62. Rotating shaft; 63. Connecting rod; 64. Pressing wheel; 65. Torsion spring; 100. Cable to be passed through. Detailed implementation manner

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the solution of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0022] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] The following combines Figures 1 to 13 to detail the specific embodiments of the present invention.

[0024] This embodiment provides a cable threading device for building electrical construction, including a fixed frame 1, a guide tube 2, a lead wire 3, a cable fixing structure 4 and a driving structure 5.

[0025] The fixing frame 1 is mainly used to provide hardware support for other components.

[0026] Specifically, 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 by 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.

[0027] The guide tube 2 penetrates the fixed frame 1 , is fixed relative to the fixed frame 1 and is arranged along the front-to-back direction, and a driving window 21 is provided on the side wall of the guide tube 2 .

[0028] Specifically, Figure 10 As shown, a strip fixing seat 14 is provided at the inner bottom of the fixing frame 1, and the strip fixing seat 14 is arranged along the front-to-back direction. The upper surface of the strip fixing seat 14 is set to be an arc surface adapted to the guide tube 2, and the bottom of the guide tube 2 is supported on the arc surface to achieve relative fixation of the guide tube 2 and the fixing frame 1.

[0029] It should be noted that the purpose of setting 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.

[0030] Specifically, Figure 1 As shown, two drive windows 21 are provided and symmetrically distributed on both sides of the guide tube 2 . The drive windows 21 are distributed on both sides so that the two sides of the lead wire 3 can be stressed more evenly, which is more conducive to the smooth advancement of the lead wire 3 .

[0031] The lead wire 3 is interspaced and passed through the guide tube 2 . A threading head 31 is provided at the front end of the lead wire 3 . The lead wire 3 is used to pass through the threading head 31 into the wire tube.

[0032] It is easy to understand that the lead wire 3 is used to penetrate into the wire tube, so the outer diameter of the lead wire 3 should be smaller than the inner diameter of the wire tube.

[0033] Specifically, 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.

[0034] 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.

[0035] It should be noted that although the wire conduit is arranged in a straight line as much as possible during wire threading, the actual arrangement state of the wire conduit is not necessarily a standard straight line. Therefore, in order to ensure that the lead wire 3 can be smoothly inserted into the wire conduit, the lead wire 3 can be made of a flexible material such as rubber or silica gel. The flexible material can produce a certain deformation to better match the wire conduit. However, it should be noted that since the lead wire 3 also needs to be driven forward by the driving wheel 51 of the driving structure 5, the flexible material cannot be too soft and should be able to be driven forward.

[0036] Among them, the cable fixing structure 4 is arranged on the lead wire 3 and is used to fix the cable to be threaded 100 on the lead wire 3.

[0037] In specific design, the cable to be threaded 100 can be fixed to the front end or the rear end of the lead wire 3 through the cable fixing structure 4. When the cable to be threaded 100 is fixed to the front end of the lead wire 3, when the front end of the lead wire 3 passes through the wire conduit, the cable also penetrates the wire conduit. Therefore, only the lead wire 3 needs to be removed. When the cable to be threaded 100 is fixed to the rear end of the lead wire 3, when the front end of the lead wire 3 passes through the wire conduit, it is also necessary to manually pull the lead wire 3 to make the rear end of the lead wire 3 pass through the wire conduit, and then the cable can penetrate the wire conduit. Comparing the two methods, although the lead wire 3 also needs to be removed after the front end of the lead wire 3 passes through the wire conduit in the former method, the operation of removing the lead wire 3 does not need to take into account the state of the cable compared with the operation of pulling the lead wire 3 to guide the cable to continue threading. The operation is more convenient and the efficiency is higher. Therefore, in this embodiment, the method of fixing the cable to be threaded 100 to the front end of the lead wire 3 is adopted, and the specific structure designed is as follows: As Figure 4 and Figure 5 shown, the lead wire 3 is a tubular structure. The cable fixing structure 4 is adjacent to the rear of the wire threading head 31. A strip-shaped notch 32 is opened 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. The strip-shaped notch 32 is used to press the cable to be threaded 100 into the inside of the lead wire 3 from the side.

[0038] It should be noted that since the lead wire 3 is relatively long, if the cable to be threaded 100 is inserted into the lead wire 3 from the rear end of the lead wire 3 and continuously moves forward until it reaches the front end of the lead wire 3, the insertion operation of the cable to be threaded 100 inside the lead wire 3 will also consume a lot of manpower and energy. Therefore, while fixing the cable to be threaded 100 to the front end of the lead wire 3 in this embodiment, the lead wire 3 is improved, and a strip-shaped notch 32 is opened at the top of its side wall. Through this strip-shaped notch 32, the cable to be threaded 100 can be pressed into the inside of the lead wire 3 from the side, greatly improving the threading efficiency.

[0039] It should be noted that as mentioned above, the lead wire 3 is made of a flexible material so that the lead wire 3 can better match the wire conduit when penetrating and advancing in the wire conduit. In addition, the lead wire 3 made of a flexible material is also more conducive to the lateral pressing of the cable to be threaded 100.

[0040] Specifically, as Figures 5 to 7 shown, the cable fixing structure 4 includes a connecting barrel 41 and a clamping assembly; the axis of the connecting barrel 41 is horizontally arranged and the bottom of the barrel is fixedly connected to the rear end face of the threading head 31. A frustum cavity 411 is formed inside the front part of the connecting barrel 41, and the diameter of the frustum cavity 411 increases forward. A plurality of sliding grooves 412 are circumferentially and evenly distributed on the cavity wall of the frustum cavity 411, and each sliding groove 412 is arranged along the generatrix of the frustum cavity 411; there are multiple sets of clamping assemblies and they correspond to the sliding grooves 412 one by one. The clamping assembly includes a slider 42 slidably connected in the corresponding sliding groove 412. A first spring 43 is pressed between the slider 42 and the front end of the sliding groove 412. The slider 42 is fixedly connected with a clamping jaw 44. The clamping jaws 44 of multiple sets of clamping assemblies cooperate to clamp and fix the cable to be threaded 100. During operation, the cable to be threaded 100 is pushed forward. The cable to be threaded 100 contacts the clamping jaw 44 and applies a forward thrust to the clamping jaw 44. The slider 42 moves forward along the sliding groove 412 under the action of this thrust, so that the clamping jaws 44 of multiple sets of clamping assemblies move away from each other, so that the cable to be threaded extends between the multiple clamping jaws 44; when the cable to be threaded 100 extends between the multiple clamping jaws 44, the slider 42 loses the thrust action. At the same time, the slider 42 moves backward along the sliding groove 412 under the action of the first spring 43, so that the clamping jaws 44 of multiple sets of clamping assemblies move closer to each other, thereby clamping and fixing the cable to be threaded 100.

[0041] More specifically, as Figure 6 and Figure 7 shown, a tapered opening 441 is provided at the rear end of the clamping jaw 44. The tapered opening 441 is more conducive to the cable to be threaded 100 extending between the multiple clamping jaws 44; the surface of the clamping jaw 44 for contacting the cable to be threaded 100 is set as an arc surface to ensure the clamping force; a plurality of convex points 442 are provided on this arc surface to increase the friction between the clamping jaw 44 and the cable to be threaded 100, and further ensure the clamping force.

[0042] More specifically, as Figure 6 shown, the connecting barrel 41 is connected to the lead wire 3 through an adapter barrel 45. The front end of the adapter barrel 45 is rotatably sleeved on the connecting barrel 41, and the front end of the lead wire 3 is screwed inside the adapter barrel 45.

[0043] Furthermore, as Figures 5 to 7As shown, the cable fixing structure 4 further includes a wire removing assembly. The wire removing assembly includes a moving ring 46 slidably sleeved on the rear part of the connecting barrel 41. The moving ring 46 is fixedly connected with a plurality of radially arranged connecting bars 47. Each connecting bar 47 extends into the inner side of the connecting barrel 41 through a sliding hole 413 formed in the side wall of the connecting barrel 41. The plurality of connecting bars 47 correspond to the plurality of clamping jaws 44 one by one. The rear end of each clamping jaw 44 is connected to the front surface of the corresponding connecting bar 47 and can slide along the length direction of the connecting bar 47. When the cable 100 to be threaded extends from the front end of the wire pipe, the moving ring 46 is pushed forward. The moving ring 46 drives the clamping jaws 44 and the slider 42 to move forward. Since the slider 42 moves along the sliding groove 412, the plurality of clamping jaws 44 move away from each other, so as to disengage from the cable 100 to be threaded. Then, the whole threading head 31 is further moved forward to realize the separation of the cable 100 to be threaded from the cable fixing structure 4, and further, the removal of the lead wire 3 can be completed. The added wire removing assembly in this embodiment can quickly complete the separation of the cable 100 to be threaded from the lead wire 3, further improving the threading efficiency.

[0044] Further, as Figure 8 and Figure 9 shown, the cable threading device for building electrical construction further includes a wire pressing structure 6. The wire pressing structure 6 includes a hinge seat 61, a rotating shaft 62, a connecting rod 63, a pressing wheel 64 and a torsion spring 65. The hinge seat 61 is fixed at the rear end of the guiding pipe 2. The rotating shaft 62 is installed on the hinge seat 61. The rotating shaft 62 is horizontally arranged and perpendicular to the guiding pipe 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 pressing wheel 64 is rotatably installed at the rear end of the connecting rod 63 and is located directly above the strip-shaped notch 32. The 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 on the lead wire 3 to press the cable 100 to be threaded into the lead wire 3 through the strip-shaped notch 32. During operation, first, a part of the cable 100 between the wire pressing structure 6 and the cable fixing structure 4 is manually stuffed into the lead wire 3 and the cable 100 to be threaded is fixed to the lead wire 3 through the cable fixing structure 4. Subsequently, when the lead wire 3 is driven to move forward, the part of the cable 100 behind the wire pressing structure 6 can be automatically pressed into the lead wire 3 under the action of the pressing wheel 64, further saving manpower and improving the operation efficiency. In addition, the wire pressing structure 6 also has an advantage: when the part of the cable 100 behind the wire pressing structure 6 is suddenly tightened by an external force, the pressing wheel 64 cooperates with the torsion spring 65 to provide a certain buffer for the tightened cable 100 to be threaded, avoiding damage to structures such as the guiding pipe 2 when the suddenly tightened cable 100 to be threaded is pulled out of the lead wire 3 through the strip-shaped notch 32 due to a violent impact.

[0045] Among them, the driving structure 5 is arranged on the fixed frame 1 and includes a driving wheel 51. The driving wheel 51 is arranged at the driving window 21 and is used to contact and drive the lead wire 3 to move forward through the driving window 21.

[0046] Specifically, as Figure 10 shown, the driving structure 5 is provided with two driving wheels 51. The two driving wheels 51 are respectively arranged corresponding to two driving windows 21 and have opposite rotation directions to jointly drive the lead 3 to move forward. The two driving 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.

[0047] More specifically, as Figures 10 to 12 shown, the driving structure 5 includes a rotating column 52 and a driving shaft 53; there are two rotating columns 52, and both are vertically installed in the fixed frame 1. The two driving wheels 51 are respectively fixedly sleeved on the two rotating columns 52; the driving shaft 53 is rotatably installed in the fixed frame 1 and is horizontally arranged, and the driving shaft 53 is in transmission connection with the two rotating columns 52. During operation, the driving shaft 53 rotates to drive the two rotating columns 52 to rotate, thereby driving the two driving wheels 51 to rotate. Specifically, the driving shaft 53 is connected to a motor 55, and the motor 55 drives the driving shaft 53 to rotate; worm gears 57 are provided on the part of the driving shaft 53 corresponding to the two rotating columns 52, and worm wheels 56 are provided on the rotating columns 52. The transmission connection between the driving shaft 53 and the rotating columns 52 is realized through the cooperation of the worm gears 57 and the worm wheels 56.

[0048] Specifically, as Figure 12 and Figure 13As shown in the figure, 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 installed on the fixed frame 1, and the drive shaft 53 is in transmission connection with the transmission cylinder 521; the transmission rod 522 is inserted into the transmission cylinder 521 and can only axially move relative to the transmission cylinder 521; the support rod 523 is rotatably installed in the fixed frame 1 and is coaxial with the transmission rod 522, and the drive 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. A plurality of wedge-shaped blocks 526 that are circumferentially evenly distributed and have the same orientation are provided on the lower surface of the first transmission disc 524 and the upper surface of the second transmission disc 525. The first transmission disc 524 and the second transmission disc 525 achieve synchronous transmission or disengagement through the wedge-shaped blocks 526. During operation, the rotation of the drive shaft 53 drives the rotation of the transmission cylinder 521, and the rotation of the transmission cylinder 521 drives the rotation of the transmission rod 522 and the first transmission disc 524: when the drive wheel 51 on the support rod 523 bears a small load, the first transmission disc 524 and the second transmission disc 525 are in transmission through the wedge-shaped blocks 526, so as to realize the rotation of the support rod 523 and the drive wheel 51; when the threading head 31 encounters an obstacle and causes the drive wheel 51 to bear a large load, the first transmission disc 524 moves upward along the wedge-shaped blocks 526, so that the first transmission disc 524 and the second transmission disc 525 are disengaged from transmission, and the first transmission disc 524 can rotate independently, thus avoiding the slipping phenomenon of the drive wheel 51 and reducing the wear of the drive wheel 51 on the lead wire 3. In addition, when the first transmission disc 524 rotates independently and passes over this group of wedge-shaped blocks 526, the first transmission disc 524 drops and continues to rotate. When the first transmission disc 524 is in transmission connection with the second transmission disc 525 again through the next group of wedge-shaped blocks 526, the first transmission disc 524 will generate an impact force on the second transmission disc 525, which is more conducive to crossing the obstacle.

[0049] It is easy to understand that the transmission rod 522 can only axially move relative to the transmission cylinder 521, which can be achieved by a limiting structure or shape design. For example Figure 13 As shown in the figure, in this embodiment, the inner cavity cross-sectional shape of the transmission cylinder 521 and the cross-sectional shape of the transmission rod 522 are both designed as regular hexagons so as to be able to rotate integrally and move axially relative to each other.

[0050] More specifically, as Figure 13 shown in the figure, in order to realize the relative limit between the first transmission disc 524 and the second transmission disc 525, this embodiment uses the bottom of the barrel-shaped structure as the second transmission disc 525, sets the wedge-shaped blocks 526 on the bottom of the barrel-shaped structure, and places the first transmission disc 524 inside the barrel-shaped structure to complete the limit.

[0051] Furthermore, as Figure 12As shown, the driving structure 5 further includes an adjusting component 54. The adjusting component 54 includes a fixed disk 541, an adjusting bolt 543, a first moving disk 544, a second moving disk 545, and a second spring 546. The fixed disk 541 is fixed above the fixed frame 1 through a plurality of guide columns 542. The adjusting bolt 543 passes through the fixed disk 541 and is screwed in the fixed disk 541. The first moving disk 544 is slidably sleeved on the guide column 542. The first moving disk 544 is located below the fixed disk 541 and is rotatably connected to the bottom end of the adjusting bolt 543. The second moving disk 545 is slidably sleeved on the guide column 542 and is located below the first moving disk 544. The second moving disk 545 is rotatably connected to the top end of the transmission rod 522. The second spring 546 is pressed between the first moving disk 544 and the second moving disk 545. During adjustment, the adjusting bolt 543 is rotated to drive the first moving disk 544 to move up and down along the guide column 542, so as to adjust the compression amount of the second spring 546, and further realize the adjustment of the damping force that needs to be overcome when the first transmission disk 524 moves upward. In this way, the use requirements in different environments can be adapted, and the practicability of this structure is improved.

[0052] The usage method of the cable threading device for building electrical construction in this embodiment is as follows: S1. Thread the lead wire 3 into the guide tube 2 and extend it from the front end of the guide tube 2. S2. Rotate the adapter tube 45 to realize the connection between the lead wire 3 and the adapter tube 45, so as to realize the connection between the wire threading head 31 and the lead wire 3. S3. Press the cable to be threaded 100 laterally into the lead wire 3 and forwardly transport the cable to be threaded 100 so that the cable to be threaded 100 abuts against the jaws 44 of the cable fixing structure 4. S4. Use the cable to be threaded 100 to push the jaws 44 forward until it extends between the multiple jaws 44 and is clamped and fixed by the multiple jaws 44. S5. Rotate the adjusting bolt 543 as needed to adjust the compression amount of the second spring 546 to an appropriate value. S6. Place the pipeline on the front of the lead wire 3, start the drive shaft 53, and drive the lead wire 3 to move forward through the drive wheel 51. S7. When the front end of the lead wire 3 extends out of the pipeline, push the moving ring 46 forward to separate the cable to be threaded 100 from the lead wire 3. S8. Move the wire threading head 31, the adapter tube 45, and the lead wire 3 as a whole forward until they are pulled out of the pipeline, and the threading operation is completed.

[0053] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Although the foregoing embodiments have been described in detail, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A cable threading device for building electrical construction, characterized in that, Comprising: A fixed frame (1); A guiding tube (2) which penetrates through the fixed frame (1), the guiding tube (2) is fixed relative to the fixed frame (1) and arranged in the front-back direction, and a driving window (21) is provided on the side wall of the guiding tube (2); A lead wire (3) which is inserted into the guiding tube (2) with a clearance, a threading head (31) is provided at the front end of the lead wire (3), and the lead wire (3) is used to penetrate into a wire tube through the threading head (31); A cable fixing structure (4) which is arranged on the lead wire (3) and is used to fix a cable to be penetrated (100) on the lead wire (3); A driving structure (5) which is arranged on the fixed frame (1) and includes a driving wheel (51), the driving wheel (51) is arranged at the driving window (21) and is used to contact and drive the lead wire (3) to move forward through the driving window (21).

2. The cable threading device for building electrical construction according to claim 1, wherein 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 formed 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 to be penetrated (100) into the interior of the lead wire (3) from the side.

3. The cable threading device for building electrical construction according to claim 2, characterized in that, The cable fixing structure (4) includes: A connecting barrel (41) whose axis is horizontally arranged and the bottom of the barrel is fixedly connected to the rear end face of the threading head (31), a frustum cavity (411) is formed inside the front part of the connecting barrel (41), and the diameter of the frustum cavity (411) increases forward, and a plurality of sliding grooves (412) are circumferentially and uniformly arranged on the cavity wall of the frustum cavity (411), and each sliding groove (412) is arranged along the generatrix of the frustum cavity (411); A clamping assembly, there are multiple sets of the clamping assembly and they correspond to the sliding grooves (412) one by one, the clamping assembly includes a slider (42) slidably connected in the corresponding sliding groove (412), a first spring (43) is pressed between the slider (42) and the front end of the sliding groove (412), the slider (42) is fixedly connected with a clamping jaw (44), and the clamping jaws (44) of multiple sets of clamping assemblies cooperate to clamp and fix the cable to be penetrated (100).

4. The cable threading device for building electrical construction according to claim 3, characterized in that, The connecting barrel (41) is connected to the lead wire (3) through an adapter barrel (45), the front end of the adapter barrel (45) is rotatably sleeved on the connecting barrel (41), and the front end of the lead wire (3) is screwed into the adapter barrel (45).

5. The cable threading device for building electrical construction according to claim 3 or 4, characterized in that The cable fixing structure (4) further includes a wire removing assembly, the wire removing assembly includes a moving ring (46) slidably sleeved on the rear part of the connecting barrel (41), the moving ring (46) is fixedly connected with a plurality of radially arranged connecting bars (47), each connecting bar (47) extends into the inner side of the connecting barrel (41) through a sliding hole (413) formed on the side wall of the connecting barrel (41), the multiple connecting bars (47) correspond to the multiple clamping jaws (44) one by one, and the rear end of each clamping jaw (44) is connected to the front surface of the corresponding connecting bar (47) and can slide along the length direction of the connecting bar (47).

6. The cable threading device for building electrical construction according to claim 2, wherein, It further includes a wire pressing structure (6), and the wire pressing structure (6) includes: A hinge seat (61) fixed to the rear end of the guiding tube (2); A rotating shaft (62) installed on the hinge seat (61), the rotating shaft (62) being horizontally arranged and perpendicular to the guiding tube (2); A connecting rod (63) perpendicular to the rotating shaft (62), and the front end of the connecting rod (63) being fixed to the rotating shaft (62); A pressing wheel (64) rotatably installed at the rear end of the connecting rod (63) and located directly above the strip-shaped notch (32); A torsion spring (65) connected between the rotating shaft (62) and the hinge seat (61) and used to drive the pressing wheel (64) to press against the lead wire (3) so as to press the cable to be threaded (100) into the lead wire (3) through the strip-shaped notch (32).

7. The cable threading device for building electrical construction according to claim 1, characterized in that, There are two driving windows (21) symmetrically distributed on both sides of the guiding tube (2), and the driving structure (5) is provided with two driving wheels (51). The two driving wheels (51) are respectively arranged corresponding to the two driving windows (21) and have opposite rotation directions to jointly drive the lead wire (3) to move forward.

8. The cable threading device for building electrical construction according to claim 7, characterized in that, The driving structure (5) includes: Two rotating columns (52) both vertically installed in the fixed frame (1), and the two driving wheels (51) are respectively fixedly sleeved on the two rotating columns (52); A driving shaft (53) rotatably installed in the fixed frame (1) and horizontally arranged, the driving shaft (53) being in transmission connection with the two rotating columns (52).

9. The cable threading device for building electrical construction according to claim 8, characterized in that, The rotating column (52) includes: A transmission cylinder (521) rotatably installed on the fixed frame (1), the driving shaft (53) being in transmission connection with the transmission cylinder (521); A transmission rod (522) inserted into the transmission cylinder (521) and only capable of axially moving relative to the transmission cylinder (521); A support rod (523) rotatably installed in the fixed frame (1) and coaxial with the transmission rod (522), the driving wheel (51) being fixedly sleeved on the support rod (523); A transmission disc group including 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). Both the lower surface of the first transmission disc (524) and the upper surface of the second transmission disc (525) are provided with a plurality of wedge-shaped blocks (526) evenly distributed along the circumference and having the same orientation. The first transmission disc (524) and the second transmission disc (525) achieve synchronous transmission or disengagement of transmission through the wedge-shaped blocks (526).

10. The cable threading device for building electrical construction according to claim 9, wherein The driving structure (5) further includes an adjustment assembly (54), and the adjustment assembly (54) includes: A fixed disc (541) fixed above the fixed frame (1) through a plurality of guiding columns (542); An adjustment bolt (543) passing through the fixed disc (541) and screwed into the fixed disc (541); The first moving disk (544) is slidably sleeved on the guiding column (542), and the first moving disk (544) is located below the fixed disk (541) and is rotatably connected to the bottom end of the adjusting bolt (543); The second moving disk (545) is slidably sleeved on the guiding column (542) and is located below the first moving disk (544), and the second moving disk (545) is rotatably connected to the top end of the transmission rod (522); The second spring (546) is pressed between the first moving disk (544) and the second moving disk (545).

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