Threading mechanism for electrical installation

Abstract

The utility model relates to the field of electrical technology, in particular to a threading mechanism for electrical installation, which comprises a base and a revolution frame rotationally arranged on the vertical surface in the base, a pay-off reel is arranged in the revolution frame, the threading mechanism further comprises a driving motor used for driving the revolution frame to rotate, and two external connection frames relatively fixed outside the revolution frame, the wheel shafts are arranged on the opposite faces of the two external connection frames in a relatively rotating mode, and the outer portions of the wheel shafts are fixedly sleeved with concave face wheels. According to the utility model, the revolution frame is driven by the driving motor to rotate, so that the revolution frame drives the pay-off reel, the two concave surface wheels and the universal transmission piece arranged between the concave surface wheels and the gear ring to synchronously revolve, and a lead clamped between the two concave surface wheels in an interference manner is twisted by torsion to be tightened; and in cooperation with the circumferential limiting and direction guiding of the traction part on the traction end of the wire, the torsion twisted on the wire is difficult to release, so that the wire is straightened, the threading smoothness is improved, and the problem that the wire is completely blocked in a pre-buried pipeline is solved.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a wiring mechanism for electrical installation. Background Technology

[0002] During building construction and home renovation, it is necessary to run the electrical conduits that are embedded indoors. The specific operation process is as follows: the commonly used method is to manually run the power lines, communication lines or other lines into the conduits embedded underground or in the walls so that the power lines and communication lines can be run to different designated locations. However, manual running is inefficient and the lines are prone to getting stuck in the embedded conduits.

[0003] To address the aforementioned technical problems, prior art patent application number 202420161746.X discloses a wiring device for indoor electrical pre-buried conduits. This device clamps the wire to a transmission component using a clamping assembly, and the relative rotation of the transmission component drives the wire to move, achieving rapid wire transmission. In the aforementioned prior art, because the wires used for indoor wiring are relatively flexible, as the length of the wire inserted into the pre-buried conduit increases, the wire is more prone to bending and accumulating inside the conduit, leading to blockage problems. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a wiring mechanism for electrical installation to solve the problem that flexible wires are prone to bending and clogging when being threaded through pre-embedded pipes.

[0005] To achieve the above objectives, this utility model provides a wire threading mechanism for electrical installation, including a base and a rotating frame rotatably disposed on a vertical surface within the base. The rotating frame contains a wire unwinding reel. The wire threading mechanism further includes:

[0006] A drive motor used to rotate the orbiter.

[0007] Two external frames that are relatively fixed to the outside of the orbital frame.

[0008] A wheel axle is rotatably mounted on the opposite surfaces of two external frames. A concave wheel is fixedly fitted on the outside of the wheel axle, and a wire passes through the two concave wheels with an interference fit.

[0009] A toothed ring is fixed on the base on the side away from the orbital frame.

[0010] A universal joint is provided between the tooth surface of the gear ring and the end face of the wheel axle. The universal joint is used to create a relative displacement between the universal joint and the gear ring when the orbital frame drives the concave wheel to rotate synchronously, so that the orbital and rotation of the concave wheel can be carried out simultaneously, and the wire is twisted and tightened and inserted into the pre-embedded pipe.

[0011] Preferably, the threading mechanism further includes a traction part slidably disposed in the pre-embedded pipe, the traction part being used to fix and clamp the end of the guide, so that the twisting torque on the guide accumulates and straightens synchronously with the length of threading.

[0012] Preferably, the traction unit includes a sleeve and a clamping plate fitted inside the sleeve. A screw is threaded between the inside and outside of the sleeve. One end of the screw is rotatably located at the midpoint of the clamping plate. A support arm is hinged to the outside of the sleeve. A roller is rotatably provided at the free end of the support arm. An elastic telescopic rod is hinged between the midpoint of the support arm and the outside of the sleeve. The elastic telescopic rod is used to support and expand the support arm radially along the sleeve and make the roller abut against the inner wall of the pipe.

[0013] Preferably, the roller is made of elastic rubber, so that the circumferential friction of the roller in the pipe is greater than the rolling friction of the roller.

[0014] Preferably, the elastic telescopic rod and the support arm are respectively close to the two end faces of the sleeve, and the elastic telescopic rod and the support arm are positioned opposite each other in the circumferential direction of the sleeve.

[0015] Preferably, the elastic telescopic rod includes a sleeve rod hinged to the outside of the sleeve and an insert rod hinged to the midpoint of the support arm. One end of the insert rod is inserted into the inside of the sleeve rod, and a compression spring is sleeved inside the sleeve rod. The compression spring is located between the end face of the sleeve rod away from the support arm and the insert rod.

[0016] Preferably, the universal joint includes a support frame fixedly disposed outside the outer frame and a gear shaft rotatably sleeved on the support frame. The tooth surface of one outer end of the gear shaft meshes with the tooth surface of the gear ring, and the gear shaft is located between the end face of the gear ring and the end face of the wheel axle. A U-shaped frame is fixedly disposed on the end face of the gear shaft away from the gear ring, and a U-shaped frame is also fixedly disposed on the end face of the wheel axle. A cross shaft is rotatably disposed between the two U-shaped frames, and the cross shaft and the two U-shaped frames together form a cross universal joint.

[0017] Preferably, the support frame includes a support rod fixed to the outside of the outer frame and a limiting ring fixed to one end of the support rod, and the midpoint of the gear shaft is rotatably sleeved inside the limiting ring.

[0018] The beneficial effects of this utility model are:

[0019] This invention uses a drive motor to drive the rotating frame to rotate, which in turn drives the unwinding coil, two concave wheels, and the universal transmission component located between the concave wheels and the toothed ring to rotate synchronously. This causes the wire, which is clamped between the two concave wheels, to be twisted by torque and tightened. Combined with the traction unit's circumferential limiting and directional guidance of the wire's traction end, the torque twisted onto the wire is difficult to release, thus straightening the guide and improving the smoothness of wire threading. This prevents the wire from completely blocking the pre-embedded pipe. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0023] Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ;

[0024] Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 .

[0025] The diagram is marked as follows:

[0026] 1. Base; 2. Revolution frame; 3. Drive motor; 4. External frame; 5. Axle; 6. Gear ring; 7. Universal joint; 71. Support frame; 72. Gear shaft; 73. U-shaped frame; 74. Cross shaft; 8. Traction unit; 81. Sleeve; 82. Pressure plate; 83. Screw; 84. Support arm; 85. Roller; 86. Elastic telescopic rod; 9. Concave wheel; 10. Unwinding reel. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figures 1 to 4 As shown, an electrical installation wiring mechanism includes a base 1 and a rotating frame 2 rotatably mounted on a vertical surface within the base 1. The rotating frame 2 houses a wire unwinding reel 10, which includes a winding drum rotatably mounted inside the rotating frame 2 and a servo motor mounted on the rotating frame 2. The output end of the servo motor is fixed to the shaft end of the winding drum, allowing the servo motor to directly drive the winding drum to rotate and release the wire. The wiring mechanism also includes:

[0030] Drive motor 3 is used to drive the rotation of the orbiter 2.

[0031] Two external frames 4 are fixed to the outside of the orbital frame 2.

[0032] The axle 5 is rotatably mounted on the opposite surfaces of the two outer brackets 4. The axle 5 is fixedly fitted with a concave wheel 9. The wire passes through the two concave wheels 9 with an interference fit so as to clamp the wire when threading.

[0033] A toothed ring 6 is fixedly mounted on the base 1 on the side away from the orbital frame 2.

[0034] A universal joint 7 is located between the tooth surface of the gear ring 6 and the end face of the wheel axle 5. When the rotating frame 2 drives the concave wheel 9 to rotate synchronously, the universal joint 7 and the gear ring 6 form a relative displacement and drive the concave wheel 9 to rotate. The concave wheel 9 rotates and revolves simultaneously, so that the rotating concave wheel 9 conveys the wire into the pre-embedded pipe. The rotating frame 2 drives the unwinding coil 10 to rotate, which can twist the released wire, accumulate torque and straighten it, increase the hardness of the wire, so as to facilitate its smooth insertion into the pre-embedded pipe, and avoid the wire from bending and blocking in the pre-embedded pipe due to its soft texture, thereby improving the efficiency and effect of wire threading.

[0035] like Figure 1 and Figure 2As shown, the threading mechanism also includes a traction part 8 that is slidably disposed in the pre-embedded pipe. The traction part 8 is used to fix and clamp the end of the guide, so that the twisting torque on the guide accumulates and straightens synchronously with the length of threading.

[0036] The traction unit 8 includes a sleeve 81 and a clamping plate 82 fitted inside the sleeve 81. A screw 83 is threaded between the inside and outside of the sleeve 81. One end of the screw 83 is rotatably located at the midpoint of the clamping plate 82. A support arm 84 is hinged to the outside of the sleeve 81. A roller 85 is rotatably provided at the free end of the support arm 84. An elastic telescopic rod 86 is hinged between the midpoint of the support arm 84 and the outside of the sleeve 81. The elastic telescopic rod 86 is used to support and expand the support arm 84 radially along the sleeve 81 and make the roller 85 abut against the inner wall of the pipe.

[0037] The roller 85 is made of elastic rubber, which makes the circumferential friction of the roller 85 inside the pipe greater than the rolling friction of the roller 85. This allows some torque to be applied to the conductor through twisting when the revolving frame 2 drives the unwinding coil 10 to revolve, thus tauting the conductor. Because the circumferential friction between the roller 85 and the inner wall of the embedded pipe is relatively large, it is difficult for the twisting torque on the conductor to cause the roller 85 to deflect circumferentially inside the embedded pipe. This prevents the torque applied to the conductor from being released, improving efficiency. The wire is twisted and straightened, and by rotating the screw 83 clockwise or counterclockwise, it pushes or pulls the clamping plate 82 radially along the sleeve 81, so as to clamp and fix the traction end of the wire between the clamping plate 82 and the inner wall of the sleeve 81, or release the clamping and fixing state of the traction end of the wire. When threading, the traction part 8 is pushed by the thrust of the two concave wheels 9 clamping the wire and conveying the twisted wire into the pre-embedded pipe, thereby improving the threading efficiency and reducing the difficulty of the threading operation.

[0038] The elastic telescopic rod 86 and the support arm 84 are respectively close to the two end faces of the sleeve 81, and the elastic telescopic rod 86 and the support arm 84 are corresponding in the circumferential direction of the sleeve 81, so as to make it easier to insert the sleeve 81 into the pre-embedded pipes with different inner diameters and expand its application range.

[0039] The elastic telescopic rod 86 includes a sleeve rod hinged to the outside of the sleeve 81 and an insert rod hinged to the midpoint of the support arm 84. One end of the insert rod is inserted into the inside of the sleeve rod. A compression spring is sleeved inside the sleeve rod. The compression spring is located between the end face of the sleeve rod away from the support arm 84 and the insert rod. By compressing the elastic telescopic rod 86, the insert rod is gradually pushed into the sleeve rod and the spring is compressed, so that the traction part 8 can be inserted into pre-embedded pipes of different diameters, thus expanding its application range.

[0040] like Figure 3 and Figure 4As shown, the universal joint 7 includes a support frame 71 fixedly mounted on the outside of the outer frame 4 and a gear shaft 72 rotatably mounted on the support frame 71. The tooth surface of one end of the gear shaft 72 meshes with the tooth surface of the gear ring 6, and the gear shaft 72 is located between the end face of the gear ring 6 and the end face of the wheel axle 5. A U-shaped frame 73 is fixedly mounted on the end face of the gear shaft 72 away from the gear ring 6, and a U-shaped frame 73 is also fixedly mounted on the end face of the wheel axle 5. A cross shaft 74 is rotatably mounted between the two U-shaped frames 73. The cross shaft 74 and the two U-shaped frames 73 together form a cross universal joint.

[0041] The support frame 71 includes a support rod fixed to the outside of the outer frame 4 and a limiting ring fixed to one end of the support rod. The midpoint of the gear shaft 72 is rotatably sleeved inside the limiting ring. When the drive motor 3 drives the revolving frame 2 to rotate, it causes the outer frame 4 and the gear shaft 72 located between the outer frame 4 and the gear ring 6 to revolve, and the gear shaft 72 and the gear ring 6 to rotate relative to each other. The tooth surface of the gear shaft 72 meshes with the tooth surface of the gear ring 6, so that the gear shaft 72 can rotate on its own axis while revolving. It can also indirectly drive the wheel axle 5 and the concave wheel 9 to rotate synchronously through the cross shaft 74, so as to transport the wire clamped between the two concave wheels 9 into the pre-embedded pipe and realize the wire threading operation.

[0042] Working principle: First, the pulled end of the wire on the unwinding reel 10 is inserted between the clamping plate 82 and the inner wall of the sleeve 81. Then, the screw 83 is turned clockwise to push the clamping plate 82 to squeeze the pulled end of the wire, thus clamping and fixing the pulled end of the wire. Next, the roller 85 is pressed against the outside of the sleeve 81, causing the elastic telescopic rod 86 to retract. This reduces the distance between the two rollers 85 in the radial direction of the sleeve 81, making it easier to quickly insert the traction part 8 into pre-embedded pipes of different inner diameters. Under the elastic force of the two elastic telescopic rods 86, the distance between the two rollers 85 increases and they abut against the inner wall of the pre-embedded pipe. This increases the circumferential friction between the rollers 85 and the inner wall of the pre-embedded pipe, preventing the pulled end of the wire from rotating due to torque during threading. It also reduces the friction of the wire during threading. The friction force simultaneously activates the unwinding reel 10 and the drive motor 3, causing the rotating frame 2 to rotate. This drives the outer frame 4 and the gear shaft 72 located between the outer frame 4 and the gear ring 6 to rotate, creating a relative rotation between the gear shaft 72 and the gear ring 6. The tooth surfaces of the gear shaft 72 mesh with the tooth surfaces of the gear ring 6, allowing the gear shaft 72 to rotate on its own axis while rotating. This indirectly drives the wheel axle 5 and the concave wheel 9 to rotate synchronously via the cross shaft 74. This facilitates the feeding of the wire, which is clamped between the two concave wheels 9, into the pre-embedded pipe, enabling the wire threading operation. At the same time, the unwinding reel 10, which rotates synchronously with the rotating frame 2, twists the wire, making it taut and increasing the overall rigidity of the wire. This ensures smooth threading and prevents blockages caused by bending when threading the wire in the pre-embedded pipe, thus improving threading efficiency.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0044] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrical installation threading mechanism comprising a base (1) and a revolving frame (2) rotating on a vertical surface in the base (1), a pay-off reel (10) being arranged in the revolving frame (2), characterized in that, The threading mechanism also includes: The drive motor (3) is used to drive the rotation of the rotating frame (2); Two external frames (4) are fixed to the outside of the orbital frame (2); A wheel axle (5) is rotatably mounted on the opposite surfaces of two external frames (4). A concave wheel (9) is fixedly sleeved on the outside of the wheel axle (5). A wire passes through the two concave wheels (9) with an interference fit. A toothed ring (6) is fixedly mounted on the base (1) on the side away from the orbital frame (2); A universal drive component (7) is provided between the tooth surface of the toothed ring (6) and the end face of the wheel axle (5). The universal drive component (7) is used to create a relative displacement between the universal drive component (7) and the toothed ring (6) and drive the concave wheel (9) to rotate when the orbital frame (2) drives the concave wheel (9) to rotate synchronously. This allows the concave wheel (9) to rotate and rotate simultaneously, thereby twisting and tightening the wire and inserting it into the pre-embedded pipe.

2. An electrical installation threading mechanism according to claim 1, characterised in that, The threading mechanism also includes a traction part (8) that is slidably disposed in the pre-embedded pipe. The traction part (8) is used to fix and clamp the end of the guide so that the twisting torque on the guide accumulates and straightens synchronously with the length of threading.

3. An electrical installation threading mechanism according to claim 2, characterised in that, The traction unit (8) includes a sleeve (81) and a clamping plate (82) sleeved inside the sleeve (81). A screw (83) is threaded between the inside and outside of the sleeve (81). One end of the screw (83) is rotatably located at the midpoint of the clamping plate (82). A support arm (84) is hinged to the outside of the sleeve (81). A roller (85) is rotatably provided at the free end of the support arm (84). An elastic telescopic rod (86) is hinged between the midpoint of the support arm (84) and the outside of the sleeve (81). The elastic telescopic rod (86) is used to support and expand the support arm (84) radially along the sleeve (81) and make the roller (85) abut against the inner wall of the pipe.

4. An electrical installation threading mechanism according to claim 3, characterised in that, The roller (85) is made of elastic rubber, which makes the circumferential friction of the roller (85) in the pipe greater than the rolling friction of the roller (85).

5. An electrical installation threading mechanism according to claim 4, characterised in that, The elastic telescopic rod (86) and the support arm (84) are respectively close to the two end faces of the sleeve (81), and the elastic telescopic rod (86) and the support arm (84) are positioned correspondingly in the circumferential direction of the sleeve (81).

6. The wiring mechanism for electrical installation according to claim 5, characterized in that, The elastic telescopic rod (86) includes a sleeve rod hinged to the outside of the sleeve (81) and an insert rod hinged to the midpoint of the support arm (84). One end of the insert rod is inserted into the inside of the sleeve rod. A compression spring is sleeved inside the sleeve rod. The compression spring is located between the end face of the sleeve rod away from the support arm (84) and the insert rod.

7. An electrical installation threading mechanism according to claim 1, wherein, The universal joint (7) includes a support frame (71) fixedly mounted on the outside of the outer frame (4) and a gear shaft (72) rotatably mounted on the support frame (71). The tooth surface of one end of the gear shaft (72) meshes with the tooth surface of the gear ring (6), and the gear shaft (72) is located between the end face of the gear ring (6) and the end face of the wheel axle (5). A U-shaped frame (73) is fixedly mounted on the end face of the gear shaft (72) away from the gear ring (6), and a U-shaped frame (73) is also fixedly mounted on the end face of the wheel axle (5). A cross shaft (74) is rotatably mounted between the two U-shaped frames (73), and the cross shaft (74) and the two U-shaped frames (73) together form a cross universal joint.

8. An electrical installation threading mechanism according to claim 7, characterised in that, The support frame (71) includes a support rod fixed to the outside of the outer frame (4) and a limiting ring fixed to one end of the support rod. The gear shaft (72) is rotatably sleeved inside the limiting ring at the midpoint.

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