A wire threading and pulling device for building electrical construction

Abstract

The present invention discloses a wire threading and traction device for building electrical construction, which relates to the field of electrical construction and includes an A frame, a B frame, an elastic connection component, a fixed clamping mechanism and an anti-slip mechanism. The A frame, the elastic connection component and the B frame are connected in sequence. Support mechanisms are provided on the outside of the A frame and the B frame respectively for supporting the A frame and the B frame to move in the pipeline. The fixed clamping mechanism is installed inside the A frame and is used to fix and clamp the end of the cable. The anti-slip mechanism is installed on the B frame. The anti-slip mechanism includes a transmission component and a clamping component, and the clamping component can clamp the cable. The wire threading and traction device for building electrical construction forms a double locking of a main clamping point and a dynamic auxiliary clamping point through the coordinated action of the fixed clamping mechanism and the anti-slip mechanism. When the cable is deformed in the bending section, the anti-slip mechanism triggers clamping compensation to prevent the cable from falling out of the fixed clamping point, thereby significantly improving the traction reliability.

Description

Technical Field

[0001] The invention relates to electrical construction technology, in particular to a wire threading and pulling device for building electrical construction. Background Art

[0002] Cable threading is a crucial step in building electrical construction, directly impacting the installation quality and subsequent performance of the electrical system. Traditional cable threading methods often have numerous drawbacks and are unable to meet the demands of complex and ever-changing construction environments.

[0003] When faced with curved pipelines, existing cable threading and pulling devices struggle to effectively adapt to the changes caused by the curve. When the cable enters a curved section, the device's frame forms an angle due to the curvature of the pipeline, causing the cable to bend and deform, and the cable surface to become partially loose or stretched. This situation can easily cause the fixed clamping mechanism to separate from the cable, affecting the smooth progress of the threading operation and making it difficult to ensure the cable is securely fixed during the pulling process. Furthermore, excessive friction can damage the cable's outer sheath, reducing the cable's service life and electrical performance, increasing construction costs and making subsequent maintenance more difficult. Summary of the Invention

[0004] The purpose of the present invention is to provide a wire threading and pulling device for building electrical construction, so as to solve the problem in the conventional wire threading and pulling device in the prior art that when the cable enters the curved section, the cable bends and deforms, the cable surface becomes locally loose or stretched, and it is easy to cause the clamping part at the front end of the cable to separate from the cable, affecting the smooth progress of the wire threading operation and making it difficult to ensure that the cable is reliably fixed during the pulling process.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a wire threading and pulling device for building electrical construction, comprising a frame A, a frame B, an elastic connection assembly, a fixed clamping mechanism and an anti-slip mechanism;

[0006] The A frame, the elastic connection assembly and the B frame are connected in sequence. The A frame and the B frame are both provided with support mechanisms on the outside. The two support mechanisms are used to support the A frame and the B frame to move in the pipeline respectively.

[0007] The fixed clamping mechanism is installed inside the A frame and is used to fix and clamp the end of the cable;

[0008] The anti-slip mechanism is installed on the B frame. The anti-slip mechanism includes a transmission component and a clamping component. The clamping component can clamp the cable. One side of the clamping component is connected to a transmission component that can drive the clamping component to move along the length direction of the B frame. When the part of the cable located between the A frame and the B frame is bent at an angle, the transmission component drives the clamping component to move toward the side of the A frame along the length direction of the B frame.

[0009] Furthermore, the fixed clamping mechanism includes a fixed disk, a turntable and multiple A clamping parts. The outer wall of the fixed disk is fixedly connected to the inner wall of the A frame. The multiple A clamping parts are arranged in a circular array with the axis of the fixed disk as the center. One side of the multiple A clamping parts is fixedly connected to a slide. One side of the multiple slides are respectively slidably connected to the fixed disk. The ends of the multiple slides are fixedly installed with push rods. The outer wall of the turntable is rotatably connected to the A frame. A plurality of inclined grooves are opened on the turntable. The plurality of inclined grooves correspond one-to-one to the plurality of push rods. The inner walls of the plurality of inclined grooves are respectively slidably connected to the corresponding push rods. One side of the turntable is connected to a rotating drive component for driving the turntable to rotate around its own axis.

[0010] Furthermore, the rotary drive assembly includes a rotary drive member, gear A and an inner gear ring. The rotary drive member is fixedly mounted on the inner wall of the A frame. Gear A is fixedly sleeved on the outside of the output shaft of the rotary drive member. One side of gear A is meshed with the inner gear ring, and one side of the inner gear ring is fixedly connected to the turntable.

[0011] Furthermore, the transmission component includes a sliding frame, a T-shaped connecting rod, a fixed frame and a symmetrically arranged transmission assembly. The outer wall of the sliding frame is slidably connected to the inner wall of the B frame, one end of the T-shaped connecting rod is fixedly connected to the sliding frame, the clamping component is installed on the sliding frame, and one side of the fixed frame is fixedly connected to the B frame. The transmission assembly includes a trigger rod, the top end of the trigger rod is rotatably connected to a swing arm, and the end of the swing arm away from the trigger rod is fixedly connected to the A rotating shaft, and the A rotating shaft is rotatably installed on the fixed frame. The top end of the A rotating shaft is fixedly sleeved with a B gear, and a rack is engaged with one side of the B gear. One side of the rack is slidably connected to the fixed frame, and a protrusion is provided on the end of the rack close to the T-shaped connecting rod. When the rack moves along its own length direction toward the side of the A frame, the protrusion can contact and push the T-shaped connecting rod to move.

[0012] Furthermore, a plurality of C springs are fixedly connected to one side of the sliding frame, and the end of the C spring away from the sliding frame is fixedly connected to the B frame. The clamping component includes a plurality of B clamping members, and one side of the plurality of B clamping members is connected to a moving drive component that can drive the plurality of B clamping members to move toward the center of the sliding frame.

[0013] Furthermore, the mobile drive assembly includes multiple B-links, which correspond one-to-one to multiple B-clamps. One ends of the multiple B-links are hinged to their corresponding B-clamps, and the other ends of the multiple B-links are fixedly connected to B rotating shafts. The multiple B rotating shafts are rotatably installed on the sliding frame, and one ends of the multiple B rotating shafts are fixedly connected to torsion springs, and the ends of the multiple torsion springs are fixedly connected to the sliding frames.

[0014] Furthermore, the mobile drive assembly includes multiple telescopic drive members, which correspond one-to-one to multiple B clamping members. The mobile ends of the multiple telescopic drive members are respectively fixedly connected to their corresponding B clamping members, and the fixed ends of the multiple telescopic drive members are respectively fixedly connected to the sliding frames.

[0015] Furthermore, the elastic connection assembly includes a plurality of A springs, and two ends of the plurality of A springs are fixedly connected to the A frame and the B frame respectively.

[0016] Furthermore, the support mechanism includes a fixed frame, and three support components are evenly arranged on the outside of the fixed frame. The support component includes a support arm, a walking wheel, an A connecting rod, a slider and a B spring. One end of the support arm is hinged to the fixed frame, and the walking wheel is rotatably installed on the other end of the support arm. One end of the A connecting rod is hinged to the support arm, and the other end of the A connecting rod is hinged to the slider. The slider is slidably installed on the fixed frame, and the two ends of the B spring are respectively fixedly connected to the slider and the fixed frame. The inner wall of the fixed frame in the support mechanism installed on the A frame is fixedly connected to the A frame, and the inner wall of the fixed frame in the support mechanism installed on the B frame is fixedly connected to the B frame.

[0017] Furthermore, a traction ring for connecting an external traction line is fixedly installed on a side of the A frame away from the B frame.

[0018] Compared with the existing technology, the wire threading and pulling device for building electrical construction provided by the present invention forms a dual locking of the main clamping point and the dynamic auxiliary clamping point through the coordinated action of the fixed clamping mechanism and the anti-slip mechanism. When the cable deforms in the bending section, the anti-slip mechanism triggers clamping compensation to prevent the cable from falling out of the fixed clamping point, significantly improving the pulling reliability.

[0019] When the portion of the cable located between frame A and frame B has a bending angle, the clamping component of the anti-slip mechanism assists in clamping the cable. The transmission component drives the clamping component to move along the length direction of frame B toward the side of frame A, causing the cable to move forward or have a tendency to move forward. The fixed clamping mechanism and the clamping component form a double-point clamping lock, which can not only effectively prevent the cable from falling out, but also reduce the clamping pressure of the fixed clamping mechanism, disperse the force, avoid damage to the cable skin due to excessive local pressure, and protect the integrity of the cable;

[0020] Through the transmission components set up, when the cable enters the curved section and causes frame A and frame B to form an angle, the cable squeezes the trigger rod laterally, converting the bending deformation into linear displacement of the clamping component. When the angle between the A / B frames changes, it triggers progressive forward movement, forming a dynamic compensation clamping point and improving the reliability of traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1A schematic diagram of the external three-dimensional structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the overall cross-sectional structure provided by an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a fixed clamping mechanism provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the combination of a turntable and an inclined chute provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of a transmission component (part) provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of a partial structure provided by an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of a combination of a clamping component and a sliding frame provided in an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of another combination of a clamping component and a sliding frame provided in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 100, frame A; 110, traction ring; 200, frame B; 300, elastic connection assembly; 310, spring A; 400, fixed clamping mechanism; 410, fixed plate; 420, rotating plate; 430, clamping member A; 440, push rod; 450, inclined slot; 460, rotary drive assembly; 461, rotary drive member; 462, gear A; 463, inner ring gear; 470, slide plate; 500, anti-slip mechanism; 510, transmission component; 511, sliding frame; 512, T-type connection Rod; 513, fixed frame; 514, trigger rod; 515, swing arm; 516, A shaft; 517, B gear; 518, rack; 519, protrusion; 520, clamping part; 521, B clamping part; 522, B connecting rod; 523, B shaft; 524, torsion spring; 525, telescopic driving part; 530, C spring; 600, supporting mechanism; 610, fixed frame; 620, supporting arm; 630, walking wheel; 640, A connecting rod; 650, slider; 660, B spring. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figures 1 to 8A wire threading and pulling device for building electrical construction includes a frame A 100, a frame B 200, an elastic connection component 300, a fixed clamping mechanism 400 and an anti-slip mechanism 500;

[0034] The A frame 100, the elastic connection assembly 300 and the B frame 200 are connected in sequence. The A frame 100 and the B frame 200 are both provided with a support mechanism 600 on the outside. The two support mechanisms 600 are used to support the A frame 100 and the B frame 200 respectively to move in the pipeline.

[0035] The fixed clamping mechanism 400 is installed inside the frame A 100 and is used to fix and clamp the end of the cable;

[0036] The anti-slip mechanism 500 is installed on the B frame 200. The anti-slip mechanism 500 includes a transmission component 510 and a clamping component 520. The clamping component 520 can clamp the cable. One side of the clamping component 520 is connected to the transmission component 510 that can drive the clamping component 520 to move along the length direction of the B frame 200. When the part of the cable located between the A frame 100 and the B frame 200 is bent at an angle, the transmission component 510 drives the clamping component 520 to move along the length direction of the B frame 200 toward the side of the A frame 100.

[0037] The elastic connection assembly 300 connects the A frame 100 and the B frame 200 to form an elastic buffer structure. When the cable enters the curved path of the pipeline, the change in the angle between the A frame 100 and the B frame 200 will stretch or compress the spring, dynamically adjusting the relative position of the A frame 100 and the B frame 200 to adapt to the curved pipeline during cable threading.

[0038] When threading, the cable is extended through the B frame 200 to the inside of the A frame 100, and the end of the fixed cable is clamped by the fixed clamping mechanism 400. Under the support of the support mechanism 600, the A frame 100 is pulled, and the A frame 100 can drive the cable to be threaded in the pipeline. When the cable enters the curved section in the pipeline, the A frame 100 is at the front end, and the A frame 100 enters the curved section of the pipeline first, and an angle is formed between the A frame 100 and the B frame 200. At this time, the cable is bent and deformed, and the cable skin is partially relaxed or stretched, and there is a risk of disengagement between the fixed clamping mechanism 400 and the cable. The cable outer skin is damaged due to separation or excessive friction. To this end, when the cable is located between the A frame 100 and the B frame 200 and the part bent at an angle, the clamping component 520 assists in clamping the cable. The transmission component 510 drives the clamping component 520 to move along the length direction of the B frame 200 toward the side of the A frame 100, so that the cable moves forward or has a tendency to move forward. The fixed clamping mechanism 400 and the clamping component 520 form a double-point clamping lock to prevent the cable from falling out, reduce the clamping pressure of the fixed clamping mechanism 400, and disperse the force at the double clamping points to protect the integrity of the skin.

[0039] See also Figures 2 to 4 In one embodiment of the present invention, the fixed clamping mechanism 400 includes a fixed disk 410, a rotating disk 420 and a plurality of A clamping members 430. The outer wall of the fixed disk 410 is fixedly connected to the inner wall of the A frame 100. The plurality of A clamping members 430 are arranged in a circular array with the axis of the fixed disk 410 as the center. A slide plate 470 is fixedly connected to one side of the plurality of A clamping members 430. One side of the plurality of slide plates 470 is respectively slidably connected to the fixed disk 410. The ends of the plurality of slide plates 470 are fixedly installed with push rods 440. The outer wall of the rotating disk 420 is rotatably connected to the A frame 100. The rotating disk 420 is provided with a plurality of inclined slots 450. The plurality of inclined slots 450 correspond one to one to the plurality of push rods 440. The inner walls of the plurality of inclined slots 450 are respectively slidably connected to the corresponding push rods 440. A rotation driving component 460 for driving the rotating disk 420 to rotate around its own axis is connected to one side of the rotating disk 420.

[0040] Specifically, the turntable 420 is driven to rotate by the rotary drive assembly 460, and the inclined groove 450 on the turntable 420 pushes the push rod 440 and the slide 470 to contract radially, so that the A clamps 430 in the circumferential array synchronously clamp the cable ends. Multiple A clamps 430 are evenly distributed around the cable axis to avoid surface damage caused by excessive pressure at a single point. The fixed clamping mechanism 400 provides the main clamping force for cable traction to ensure the stability of traction.

[0041] See also Figure 3In one embodiment of the present invention, the rotary drive assembly 460 includes a rotary drive member 461, an A gear 462, and an inner gear ring 463. The rotary drive member 461 is a motor, and the rotary drive member 461 is fixedly mounted on the inner wall of the A frame 100. The A gear 462 is fixedly sleeved on the outer side of the output shaft of the rotary drive member 461. One side of the A gear 462 is meshed with the inner gear ring 463, and one side of the inner gear ring 463 is fixedly connected to the turntable 420.

[0042] Specifically, the A gear 462 is driven to rotate by the rotating driving member 461 , the A gear 462 drives the inner gear ring 463 to rotate, and the inner gear ring 463 drives the turntable 420 to rotate, thereby driving the turntable 420 to rotate.

[0043] See also Figure 1 、 Figure 2 、 Figure 5 and Figure 6 In one embodiment of the present invention, the transmission component 510 includes a sliding frame 511, a T-shaped connecting rod 512, a fixed frame 513 and a symmetrically arranged transmission assembly. The outer wall of the sliding frame 511 is slidably connected to the inner wall of the B frame 200, one end of the T-shaped connecting rod 512 is fixedly connected to the sliding frame 511, the clamping component 520 is installed on the sliding frame 511, and one side of the fixed frame 513 is fixedly connected to the B frame 200. The transmission assembly includes a trigger rod 514, and the top end of the trigger rod 514 is rotatably connected to the swing arm 515. The swing arm 51 The end away from the trigger lever 514 is fixedly connected to a rotating shaft A 516, which is rotatably mounted on the fixed frame 513. A gear B 517 is fixedly sleeved on the top of the rotating shaft A 516. A rack 518 is meshed with one side of the gear B 517. One side of the rack 518 is slidably connected to the fixed frame 513. A protrusion 519 is provided on the end of the rack 518 near the T-shaped connecting rod 512. When the rack 518 moves along its own length toward the side of the A frame 100, the protrusion 519 can contact and push the T-shaped connecting rod 512 to move.

[0044] Specifically, after the A frame 100 enters the curved section, the cable forms an angle between the A frame 100 and the B frame 200, and the cable squeezes the trigger rod 514 laterally. After being compressed, the trigger rod 514 swings around the A rotation shaft 516, and the swing arm 515 drives the A rotation shaft 516 to rotate. The A rotation shaft 516 drives the B gear 517 to rotate, and the B gear 517 drives the rack 518 to move. The protrusion 519 at the end of the rack 518 pushes the T-shaped connecting rod 512, and drives the sliding frame 511 and the clamping component 520 forward, so that the cable moves forward or has a tendency to move forward, and at the same time forms a double-point clamping lock with the fixed clamping mechanism 400 to prevent the cable from falling out, reduce the clamping pressure of the fixed clamping mechanism 400, and disperse the force at the double clamping points to protect the integrity of the surface.

[0045] See also Figure 2 and Figure 7 In one embodiment of the present invention, a plurality of C springs 530 are fixedly connected to one side of the sliding frame 511. One end of the C spring 530 away from the sliding frame 511 is fixedly connected to the B frame 200. The clamping component 520 includes a plurality of B clamping members 521. One side of the plurality of B clamping members 521 is connected to a moving drive assembly capable of driving the plurality of B clamping members 521 to move toward the center of the sliding frame 511.

[0046] The mobile drive assembly includes a plurality of B connecting rods 522, each corresponding to a plurality of B clamping members 521. One end of each of the B connecting rods 522 is hinged to the corresponding B clamping member 521. The other end of each of the B connecting rods 522 is fixedly connected to a B rotating shaft 523. Each of the B rotating shafts 523 is rotatably mounted on the sliding frame 511. One end of each of the B rotating shafts 523 is fixedly connected to a torsion spring 524. The ends of each of the torsion springs 524 are fixedly connected to the sliding frame 511.

[0047] Specifically, when the sliding frame 511 moves forward, the B clamping member 521 is hinged to the B connecting rod 522 and is tightened toward the center of the cable under the action of the torsion spring 524 to form an adaptive clamping.

[0048] See also Figure 2 and Figure 8 In one embodiment of the present invention, a plurality of C springs 530 are fixedly connected to one side of the sliding frame 511. One end of the C spring 530 away from the sliding frame 511 is fixedly connected to the B frame 200. The clamping component 520 includes a plurality of B clamping members 521. One side of the plurality of B clamping members 521 is connected to a moving drive assembly capable of driving the plurality of B clamping members 521 to move toward the center of the sliding frame 511.

[0049] The mobile drive assembly includes multiple telescopic drive members 525. The telescopic drive members 525 use electric telescopic rods or hydraulic cylinders. The multiple telescopic drive members 525 correspond one-to-one to the multiple B clamping members 521. The moving ends of the multiple telescopic drive members 525 are respectively fixedly connected to their corresponding B clamping members 521, and the fixed ends of the multiple telescopic drive members 525 are respectively fixedly connected to the sliding frame 511.

[0050] Specifically, when the sliding frame 511 is displaced, the moving end of the telescopic driving member 525 actively retracts and contracts according to the displacement of the sliding frame 511 , driving the B clamping member 521 to move and clamp the cable.

[0051] In one embodiment of the present invention, the elastic connection assembly 300 includes a plurality of A springs 310 , and two ends of the plurality of A springs 310 are fixedly connected to the A frame 100 and the B frame 200 , respectively.

[0052] See also Figure 1 and Figure 2In one embodiment of the present invention, the support mechanism 600 includes a fixed frame 610, and three support components are evenly arranged on the outside of the fixed frame 610, the support components including a support arm 620, a walking wheel 630, an A connecting rod 640, a slider 650 and a B spring 660. One end of the support arm 620 is hinged to the fixed frame 610, and the walking wheel 630 is rotatably installed on the other end of the support arm 620. One end of the A connecting rod 640 is hinged to the support arm 620, and the other end of the A connecting rod 640 is hinged to the slider 650. The slider 650 is slidably installed on the fixed frame 610, and the two ends of the B spring 660 are fixedly connected to the slider 650 and the fixed frame 610 respectively. The inner wall of the fixed frame 610 in the support mechanism 600 installed on the A frame 100 is fixedly connected to the A frame 100, and the inner wall of the fixed frame 610 in the support mechanism 600 installed on the B frame 200 is fixedly connected to the B frame 200.

[0053] Specifically, under the action of the elastic telescopic force of the B spring 660, the slider 650 pushes the A connecting rod 640, and the A connecting rod 640 drives the support arm 620 to rotate, so that the walking wheel 630 is always close to the inner wall of the pipe. The three support arms 620 evenly distributed at 120° ensure that the B frame 200 runs in the center of the curved section, reducing deflection friction.

[0054] See also Figure 1 and Figure 2 In one embodiment of the present invention, a traction ring 110 for connecting an external traction line is fixedly installed on the side of the A frame 100 away from the B frame 200. The external traction equipment applies tension through the traction ring 110 to drive the device along the pipeline.

[0055] In one embodiment of the present invention, a corresponding control unit can be provided for use. This control unit can be connected to the electrical components of this application using any controller to control the on / off operation of each electrical component. This is prior art, and a single-chip microcomputer can be provided as the control unit for demonstration purposes. The single-chip microcomputer in this embodiment is a typical embedded microcontroller (MCU), consisting of an arithmetic unit, a controller, memory, input / output devices, and the like, equivalent to a miniature computer. Compared to the general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its greatest advantages are its small size, allowing it to be placed inside an instrument, low storage capacity, simple input / output interfaces, and low power consumption.

[0056] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A wire threading and pulling device for building electrical construction, characterized in that: It comprises a frame A (100), a frame B (200), an elastic connection assembly (300), a fixed clamping mechanism (400) and an anti-slip mechanism (500); The A frame (100), the elastic connection assembly (300) and the B frame (200) are connected in sequence, and the A frame (100) and the B frame (200) are both provided with support mechanisms (600) on the outside. The two support mechanisms (600) are used to support the A frame (100) and the B frame (200) to move in the pipeline respectively; The fixed clamping mechanism (400) is installed inside the frame A (100) and is used to fix and clamp the end of the cable; The anti-slip mechanism (500) is installed on the B frame (200). The anti-slip mechanism (500) includes a transmission component (510) and a clamping component (520). The clamping component (520) can clamp the cable. One side of the clamping component (520) is connected to the transmission component (510) that can drive the clamping component (520) to move along the length direction of the B frame (200). When the portion of the cable located between the A frame (100) and the B frame (200) is bent and has an angle, the transmission component (510) drives the clamping component (520) to move along the length direction of the B frame (200) toward the side of the A frame (100). The transmission component (510) includes a sliding frame (511), a T-shaped connecting rod (512), a fixed frame (513) and a symmetrically arranged transmission assembly. The outer wall of the sliding frame (511) is slidably connected to the inner wall of the B frame (200). One end of the T-shaped connecting rod (512) is fixedly connected to the sliding frame (511). The clamping component (520) is installed on the sliding frame (511). One side of the fixed frame (513) is fixedly connected to the B frame (200). The transmission assembly includes a trigger rod (514). The top end of the trigger rod (514) is rotatably connected to a swing arm (515). The swing arm (515) is away from the trigger rod (514). One end of the A-shaped rotating shaft (516) is fixedly connected to the A-shaped rotating shaft (516), which is rotatably mounted on the fixed frame (513). The top fixed sleeve of the A-shaped rotating shaft (516) is provided with a B-shaped gear (517). A rack (518) is engaged with one side of the B-shaped gear (517). One side of the rack (518) is slidably connected to the fixed frame (513). A protrusion (519) is provided at one end of the rack (518) close to the T-shaped connecting rod (512). When the rack (518) moves along its own length direction toward one side of the A-shaped frame (100), the protrusion (519) can contact and push the T-shaped connecting rod (512) to move.

2. A wire threading and pulling device for building electrical construction according to claim 1, characterized in that: The fixed clamping mechanism (400) includes a fixed disk (410), a rotating disk (420) and a plurality of A clamping members (430), the outer wall of the fixed disk (410) is fixedly connected to the inner wall of the A frame (100), the plurality of A clamping members (430) are arranged in a circular array with the axis of the fixed disk (410) as the center, one side of the plurality of A clamping members (430) is fixedly connected to a slide plate (470), one side of the plurality of slide plates (470) is respectively slidably connected to the fixed disk (410), and the plurality of slide plates (4 The ends of the rotating disk (420) are fixedly mounted with push rods (440), the outer wall of the rotating disk (420) is rotatably connected to the frame A (100), a plurality of inclined slots (450) are provided on the rotating disk (420), the plurality of inclined slots (450) correspond one to one with the plurality of push rods (440), the inner walls of the plurality of inclined slots (450) are respectively slidably connected to the corresponding push rods (440), and a rotation drive assembly (460) for driving the rotating disk (420) to rotate around its own axis is connected to one side of the rotating disk (420).

3. A wire threading and pulling device for building electrical construction according to claim 2, characterized in that: The rotary drive assembly (460) includes a rotary drive member (461), an A gear (462) and an inner gear ring (463). The rotary drive member (461) is fixedly mounted on the inner wall of the A frame (100). The A gear (462) is fixedly sleeved on the outside of the output shaft of the rotary drive member (461). One side of the A gear (462) is meshed with the inner gear ring (463), and one side of the inner gear ring (463) is fixedly connected to the turntable (420).

4. A wire threading and pulling device for building electrical construction according to claim 1, characterized in that: A plurality of C springs (530) are fixedly connected to one side of the sliding frame (511), and one end of the C spring (530) away from the sliding frame (511) is fixedly connected to the B frame (200). The clamping component (520) includes a plurality of B clamping members (521), and one side of the plurality of B clamping members (521) is connected to a moving drive assembly capable of driving the plurality of B clamping members (521) to move toward the center of the sliding frame (511).

5. A wire threading and pulling device for building electrical construction according to claim 4, characterized in that: The mobile drive assembly includes a plurality of B connecting rods (522), the plurality of B connecting rods (522) corresponding to the plurality of B clamping members (521) one by one, one end of the plurality of B connecting rods (522) being hinged to the corresponding B clamping members (521), the other end of the plurality of B connecting rods (522) being fixedly connected to a B rotating shaft (523), the plurality of B rotating shafts (523) being rotatably mounted on the sliding frame (511), one end of the plurality of B rotating shafts (523) being fixedly connected to a torsion spring (524), and the ends of the plurality of torsion springs (524) being fixedly connected to the sliding frame (511).

6. A wire threading and pulling device for building electrical construction according to claim 4, characterized in that: The mobile drive assembly includes a plurality of telescopic drive members (525), the plurality of telescopic drive members (525) corresponding one to one with the plurality of B clamping members (521), the movable ends of the plurality of telescopic drive members (525) being fixedly connected to the corresponding B clamping members (521), and the fixed ends of the plurality of telescopic drive members (525) being fixedly connected to the sliding frame (511).

7. A wire threading and pulling device for building electrical construction according to claim 1, characterized in that: The elastic connection assembly (300) comprises a plurality of A springs (310), and two ends of the plurality of A springs (310) are fixedly connected to the A frame (100) and the B frame (200), respectively.

8. A wire threading and pulling device for building electrical construction according to claim 1, characterized in that: The support mechanism (600) includes a fixed frame (610), and three support components are evenly arranged outside the fixed frame (610). The support components include a support arm (620), a walking wheel (630), an A connecting rod (640), a slider (650) and a B spring (660). One end of the support arm (620) is hinged to the fixed frame (610), and the walking wheel (630) is rotatably mounted on the other end of the support arm (620). One end of the A connecting rod (640) is hinged to the support arm (620). The A connecting rod (660) is hinged to the support arm (620). The other end of the spring (660) is hinged to the slider (650), and the slider (650) is slidably mounted on the fixed frame (610). The two ends of the spring (660) are fixedly connected to the slider (650) and the fixed frame (610), respectively. The inner wall of the fixed frame (610) in the support mechanism (600) mounted on the frame A (100) is fixedly connected to the frame A (100), and the inner wall of the fixed frame (610) in the support mechanism (600) mounted on the frame B (200) is fixedly connected to the frame B (200).

9. A wire threading and pulling device for building electrical construction according to claim 1, characterized in that: A traction ring (110) for connecting an external traction line is fixedly mounted on one side of the A frame (100) away from the B frame (200).

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