Cable winding and unwinding device for low-voltage line construction
By combining designing brackets, retracting and unwinding components, reciprocating wire components and cleaning components, the problems of cable scattering and incomplete cleaning are solved, and the tight arrangement and efficient retracting and retracting of cables are achieved.
Patent Information
- Application Number
- CN202422827227.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The structural design of the existing cable retracting and retracting devices is unreasonable, which leads to the cable being easily distracted during the retracting and retracting process, and lacks an effective cleaning structure, which increases the work intensity and difficulty of the staff.
A cable retracting and retracting device for low-voltage circuit construction is designed, including a bracket, retracting and retracting component, reciprocating wire assembly, internal cleaning component and external cleaning component. The cable is driven to move horizontally through the reciprocating wire assembly, and the internal and external cleaning component cleans up the dirty surface of the cable to ensure that the cable is evenly wound on the retracting and retracting roller.
The tight arrangement and uniform winding of the cables are achieved, which improves the convenience of use and work efficiency, and reduces the risk of disarray and dirt splashing in the cables during the retraction and unwinding process.
Smart Images
Figure CN223268150U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cable retraction and extension, and in particular relates to a cable retraction and extension device for low-voltage line construction. Background Art
[0002] Power lines are the lines used to transmit electrical energy between power plants, substations, and power users. They are a crucial component of the power supply system, responsible for the transmission and distribution of electrical energy. Power lines are conductor loops that connect substations and distribution stations with power users or equipment, transmitting and distributing electrical energy from the power source (substations) to the load (power users or equipment).
[0003] Power lines are categorized by voltage, either high-voltage or low-voltage. High-voltage lines refer to lines with voltages of 1 kV or above, while low-voltage lines refer to lines below 1 kV. Power line reconstruction projects involve many lines being scrapped, relocated, rebuilt, or requiring replacement with larger conductors. These projects involve three types of work: cable reeling, cable payout, and cable replacement—cable reeling and cable payout. Cable reeling is typically performed by pulling out the entire cable or laying it on the floor, while cable replacement typically involves replacing the old cable with a new one. Traditional cable reeling and cable payout operations are performed manually. To reduce labor intensity and improve work efficiency, technicians have developed and designed cable reeling and cable payout devices for use in these line construction projects.
[0004] However, the structural design of the existing cable reeling and unwinding device is not reasonable enough, and it only has a simple reeling and unwinding function, and cannot ensure the tight arrangement of the cables. It is easy to cause the cables to become scattered during the reeling and unwinding process, affecting the convenience of use and work efficiency; in addition, the existing cable reeling and unwinding device lacks a corresponding cleaning structure, and cannot clean the mud and dirt attached to the cables. When reeling, the dirt attached to the cables may cause the cables to stick together, which will cause difficulty in unwinding or dirt to splash when unwinding again, increasing the work intensity and difficulty of the staff and increasing the workload. Therefore, it is urgent to design a cable reeling and unwinding device for low-voltage line construction to solve the above problems. Utility Model Content
[0005] The present invention aims to solve the technical problems existing in the prior art and provides a cable retracting and unreeling device for low-voltage line construction with a rational structural design. The present invention can clean the cable before reeling and evenly wind and reel the cleaned cable, ensuring overall uniformity of cable winding and improving the practicality and work efficiency of the device.
[0006] The utility model adopts the following technical solutions to solve the technical problems existing in the known technology: a cable retracting and releasing device for low-voltage line construction includes a bracket with multiple groups of supporting legs and multiple groups of casters installed at the bottom, a retracting and releasing reel assembly is installed on the bracket for retracting and releasing the cable; a reciprocating wire assembly is installed on the bracket for driving the cable to move back and forth; it also includes an internal cleaning assembly and an external cleaning assembly installed on the bracket for cleaning the cable; the reciprocating wire assembly includes a reciprocating screw rotatably connected and horizontally arranged on the bracket, a roller mechanism is installed on the reciprocating screw through a nut; it also includes a driving motor for driving the reciprocating screw to rotate; the retracting and releasing reel assembly It includes a retractable and rewinding roller that is rotatably connected and horizontally arranged on the bracket, and a retractable motor for driving the retractable and rewinding roller is installed on the bracket; the external cleaning component includes an external cleaning seat plate installed on the bracket, and a wire passing slot extending along its length is provided on the external cleaning seat plate, and a cable threading slider corresponding to the wire passing slot is slidably connected to the front end surface of the external cleaning seat plate, and a conical slot for the cable to pass through is provided on the cable threading slider; two groups of external cleaning brushes are installed opposite to each other on the back side of the external cleaning seat plate, and it also includes two groups of external vertical guide rollers that are rotatably connected and distributed on the left and right sides on the back side of the external cleaning component, and two groups of external horizontal guide rollers that are distributed up and down.
[0007] The advantages and positive effects of the present invention are as follows: the present invention provides a cable reeling and unreeling device for low-voltage line construction, which can perform an initial cleaning operation on the cable being reeled by arranging an external cleaning component, and can perform a secondary cleaning on the cable that has completed the initial cleaning operation by arranging an internal cleaning component, thereby avoiding dirt and impurities adhering to the surface of the cable when it is reeled and affecting the reeling effect; by arranging a reciprocating conductor component, the cable can be driven to move back and forth laterally before reeling, so that the cable can be evenly wound on the reeling and unreeling roller and arranged tightly, thereby avoiding the cable from being scattered during the reeling and unreeling process, and improving the convenience of use and work efficiency.
[0008] Preferably: the roller mechanism includes a movable mounting seat connected to the reciprocating screw through a nut, two sets of roller seat plates arranged opposite to each other are fixedly connected to the top of the movable mounting seat, a distance-adjusting guide rod arranged parallel to the reciprocating screw is fixedly connected between the two sets of roller seat plates, two sets of adjustable roller seats are slidably connected to the distance-adjusting guide rod, and each adjustable roller seat is rotatably connected to a longitudinally arranged adjustable roller, and also includes a fixed roller rotatably connected between the two sets of roller seat plates and arranged parallel to the reciprocating screw; it also includes a distance-adjusting screw rotatably connected between the two sets of roller seat plates and arranged parallel to the reciprocating screw, and each adjustable roller seat is connected to the distance-adjusting screw through a nut.
[0009] Preferably: the reciprocating wire assembly also includes two sets of screw seat plates fixedly connected to the bracket and arranged opposite to each other, a guide rod arranged parallel to the reciprocating screw is installed between the two sets of screw seat plates, and guide wheels arranged in pairs and in rolling contact with the guide rod are rotatably connected to the movable mounting seat.
[0010] Preferably: the reciprocating wire assembly also includes a steering screw fixed between the two sets of screw base plates and arranged parallel to the reciprocating screw, two sets of trigger parts are threaded on the steering screw, and also includes two sets of steering sensors installed on the movable mounting seat, and the two sets of steering sensors correspond to the two sets of trigger parts respectively.
[0011] Preferably: the external cleaning assembly also includes two groups of guide groove parts fixedly connected and arranged opposite to each other on the front end surface of the external cleaning seat plate, the two groups of guide groove parts are respectively located above and below the wire passing groove opening opened on the external cleaning seat plate, and the cable threading slider is located between the two groups of guide groove parts and is slidably connected to the two through the slider.
[0012] Preferably: the internal cleaning assembly includes an internal cleaning seat plate with a slot for the cable to pass through in the middle, two groups of internal cleaning brushes are installed on the back of the internal cleaning seat plate, which are located above and below the slot and opposite to each other, and second internal roller seats are fixedly connected to the back of both ends of the internal cleaning seat plate, and two groups of internal horizontal guide rollers corresponding to the two groups of internal cleaning brushes are rotatably connected between the two groups of second internal roller seats; first internal roller seats connected to the internal cleaning seat plate are provided above and below each second internal roller seat, and internal vertical guide rollers are rotatably connected between the two groups of first internal roller seats distributed up and down.
[0013] Preferably: it also includes a cover installed on the bracket, which is arranged outside the retractable winding assembly, the reciprocating wire assembly and the internal cleaning assembly, and a notch for installing the external cleaning assembly is opened on the front side of the protective cover; an inspection window is provided on the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the main partial cross-sectional structure of the utility model;
[0015] Figure 2 It is a three-dimensional structural diagram of the external cleaning component in the utility model, from a rear perspective;
[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the external cleaning component in the present invention, viewed from the front;
[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the internal cleaning component in the utility model;
[0018] Figure 5 This is a schematic diagram of the three-dimensional structure of the reciprocating cable guide assembly in the present invention, viewed from the front;
[0019] Figure 6 This is a schematic diagram of the three-dimensional structure of the reciprocating cable guide assembly in the present invention, from a rear perspective;
[0020] Figure 7It is a three-dimensional structural diagram of the retractable and rewinding assembly in the utility model.
[0021] In the figure: 1. Bracket; 2. Protective cover; 3. Rewinding and unwinding assembly; 3-1. Rewinding and unwinding roller; 3-2. Rewinding and discharging motor; 4. Reciprocating cable guide assembly; 4-1. Guide rod; 4-2. Movable mounting seat; 4-3. Guide wheel; 4-4. Screw seat plate; 4-5. Reciprocating screw; 4-6. Adjustable roller seat; 4-7. Roller seat plate; 4-8. Fixed roller; 4-9. Adjustable roller; 4-10. Pitch-adjusting screw; 4-11. Pitch-adjusting guide rod; 4-12. Steering screw; 4-13. Trigger; 4-14. Direction sensor; 5. Internal cleaning assembly; 5-1. First inner roller seat; 5-2. Inner vertical guide roller; 5-3. Internal cleaning brush; 5-4. Inner transverse guide roller; 5-5. Internal cleaning seat plate; 5-6. Second inner roller seat; 6. External cleaning assembly; 6-1. First outer roller seat; 6-2. Outer vertical guide roller; 6-3. External cleaning brush; 6-4. Outer transverse guide roller; 6-5. External cleaning seat plate; 6-6. Second outer roller seat; 6-7. Guide trough; 6-8. Cable threading slider; 6-9. Limit block; 7. Support foot; 8. Caster. DETAILED DESCRIPTION
[0022] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail:
[0023] See Figure 1 The utility model of the cable retracting and releasing device for low-voltage line construction includes a bracket 1 with multiple sets of legs 7 and multiple sets of casters 8 installed at the bottom, and a retracting and releasing reel assembly 3 is installed on the bracket 1 for retracting and releasing cables, such as Figure 7 As shown, the above-mentioned rewinding and unwinding assembly 3 includes a rewinding and unwinding roller 3-1 that is rotatably connected to the bracket 1 and arranged horizontally, and a rewinding and discharging motor 3-2 for driving the rewinding and unwinding roller 3-1 is installed on the bracket 1.
[0024] like Figure 1 As shown, a reciprocating wire assembly 4 is installed on the bracket 1 to drive the cable to move back and forth; see further Figure 5 The above-mentioned reciprocating conductor assembly 4 includes a reciprocating screw 4-5 that is rotatably connected and horizontally arranged on the bracket 1, and a roller mechanism is installed on the reciprocating screw 4-5 through a nut; it also includes a driving motor for driving the reciprocating screw 4-5 to rotate, and the motor that drives the reciprocating screw 4-5 adopts a forward and reversible motor.
[0025] like Figure 5 and Figure 6As shown, the roller mechanism includes a movable mounting seat 4-2 connected to the reciprocating screw 4-5 through a nut, two sets of roller seat plates 4-7 arranged opposite to each other are fixed on the top of the movable mounting seat 4-2, a distance-adjusting guide rod 4-11 arranged parallel to the reciprocating screw 4-5 is fixed between the two sets of roller seat plates 4-7, two sets of adjustable roller seats 4-6 are slidably connected on the distance-adjusting guide rod 4-11, and a longitudinally arranged adjustable roller 4-9 is rotatably connected to each adjustable roller seat 4-6, and also includes a fixed roller 4-8 rotatably connected between the two sets of roller seat plates 4-7 and arranged parallel to the reciprocating screw 4-5; and also includes a distance-adjusting screw 4-10 rotatably connected between the two sets of roller seat plates 4-7 and arranged parallel to the reciprocating screw 4-5, and each adjustable roller seat 4-6 is connected to the distance-adjusting screw 4-10 through a nut. The above-mentioned pitch-adjusting screw 4-10 is a left-right rotating screw, and a knob is installed at the end of the pitch-adjusting screw 4-10.
[0026] Furthermore, the reciprocating wire assembly 4 includes two sets of screw base plates 4-4 fixedly connected to the bracket 1 and arranged opposite each other. The reciprocating screw 4-5 is rotatably mounted between the two sets of screw base plates 4-4. A guide rod 4-1 is mounted between the two sets of screw base plates 4-4 and arranged parallel to the reciprocating screw 4-5. Paired guide wheels 4-3 are rotatably connected to the movable mounting base 4-2 and are in rolling contact with the guide rods 4-1. The paired guide wheels 4-3 are distributed on the upper and lower sides of the guide rod 4-1.
[0027] like Figure 6 As shown, the reciprocating wire assembly 4 also includes a steering screw 4-12 fixedly connected between the two sets of screw base plates 4-4 and arranged parallel to the reciprocating screw 4-5. Two sets of trigger members 4-13 are screwed onto the steering screw 4-12. The assembly also includes two sets of steering sensors 4-14 mounted on the movable mounting base 4-2. The two sets of steering sensors 4-14 correspond to the two sets of trigger members 4-13. The steering sensors 4-14 are contact switches. The two sets of steering sensors 4-14 collide with the two sets of trigger members 4-13 respectively. The steering sensors 4-14 control the forward and reverse rotation of the motor driving the reciprocating screw 4-5, thereby controlling the forward and reverse rotation of the reciprocating screw 4-5.
[0028] like Figure 1 As shown, this embodiment further includes an inner cleaning component 5 and an outer cleaning component 6 installed on the bracket 1 for cleaning cables.
[0029] See further Figure 2 and Figure 3The above-mentioned external cleaning component 6 includes an external cleaning seat plate 6-5 installed on the bracket 1, and a wire-passing slot extending along its length is provided on the external cleaning seat plate 6-5. A cable-passing slider 6-8 corresponding to the wire-passing slot is slidably connected to the front end surface of the external cleaning seat plate 6-5. A conical slot for the cable to pass through is provided on the cable-passing slider 6-8, that is, the outer end of the above-mentioned conical slot is flared, and its inner end must be able to ensure that the cable can pass through. Through the above-mentioned arrangement, large impurities adhering to the cable can be prevented from entering the external cleaning component 6, and a primary cleaning operation is performed on the cable. Furthermore, two sets of guide groove members 6-7 are fixedly arranged opposite to each other on the front end surface of the external cleaning seat plate 6-5. The two sets of guide groove members 6-7 are respectively located above and below the wire-passing slot provided on the external cleaning seat plate 6-5. The cable-passing slider 6-8 is located between the two sets of guide groove members 6-7 and is slidably connected to the two sets of guide groove members through the slider. A limit stopper 6-9 fixedly connected to the outer cleaning seat plate 6-5 is provided at the end of each guide groove member 6-7.
[0030] like Figure 2 As shown, two sets of external cleaning brushes 6-3 are mounted on the back of the external cleaning base plate 6-5, facing each other. During operation, the cables pass between the two sets of external cleaning brushes 6-3. Also included are two sets of external vertical guide rollers 6-2, rotatably connected and distributed left and right, and two sets of external transverse guide rollers 6-4, distributed up and down, on the back of the external cleaning assembly 6. The two sets of external vertical guide rollers 6-2 and two sets of external transverse guide rollers 6-4 protect the cables, preventing damage caused by friction between the cables and the external cleaning base plate 6-5 during the reeling and unreeling process.
[0031] Furthermore, second outer roller seats 6-6 are fixedly connected to both ends of the back side of the outer cleaning seat plate 6-5. Two sets of second outer roller seats 6-6 are arranged opposite each other, and two sets of outer transverse guide rollers 6-4 are rotatably connected between the two sets of second outer roller seats 6-6. Above and below each second outer roller seat 6-6, a first outer roller seat 6-1 is fixedly connected to the outer cleaning seat plate 6-5. Outer vertical guide rollers 6-2 are rotatably connected between the two sets of first outer roller seats 6-1 arranged above and below. The two sets of outer transverse guide rollers 6-4 are arranged horizontally, and the two sets of outer vertical guide rollers 6-2 are arranged vertically. In addition, the two sets of outer cleaning brushes 6-3 are located between the wire notch and the two sets of outer transverse guide rollers 6-4.
[0032] like Figure 4As shown, the above-mentioned internal cleaning assembly 5 includes an internal cleaning seat plate 5-5 with a slot for the cable to pass through in the middle. Two groups of internal cleaning brushes 5-3 are installed on the back of the internal cleaning seat plate 5-5, which are located above and below the slot and are arranged opposite to each other. Second internal roller seats 5-6 are fixed to the back of both ends of the internal cleaning seat plate 5-5. Two groups of internal transverse guide rollers 5-4 corresponding to the two groups of internal cleaning brushes 5-3 are rotatably connected between the two groups of second internal roller seats 5-6. First internal roller seats 5-1 connected to the internal cleaning seat plate 5-5 are provided above and below each second internal roller seat 5-6. Internal vertical guide rollers 5-2 are rotatably connected between the two groups of first internal roller seats 5-1 distributed in an upper and lower manner. The above-mentioned internal cleaning brushes 5-3 are provided with longitudinally extending strip holes. The internal cleaning brushes 5-3 are connected to the internal cleaning seat plate 5-5 by screws inserted into the above-mentioned strip holes.
[0033] like Figure 1 As shown, this embodiment also includes a cover installed on the bracket 1, which is arranged outside the reeling assembly 3, the reciprocating wire assembly 4 and the internal cleaning assembly 5. A slot for installing the external cleaning assembly 6 is opened on the front side of the protective cover 2; and an inspection window is provided on the protective cover 2.
[0034] Working principle:
[0035] When it is necessary to reel in, start the retracting and discharging motor 3-2 and the driving motor that drives the reciprocating screw 4-5 to perform the reeling operation. The cable first passes through the cable threading slider 6-8 and two sets of outer cleaning brushes 6-3 in the outer cleaning component 6, and then passes through the two sets of inner cleaning brushes 5-3 in the inner cleaning component 5. Among them, the cable threading slider 6-8 can block large impurities attached to the cable, and the two sets of outer cleaning brushes 6-3 can perform the initial cleaning operation on the impurities attached to the cable. The two sets of inner cleaning brushes 5-3 in the inner cleaning component 5 can perform the secondary cleaning operation on the cable, which further improves the cleaning effect of the cable. The cables cleaned by the processing component 5 pass through the two sets of adjustable rollers 4-9 in the reciprocating wire assembly 4. Under the action of the rotating reciprocating screw 4-5, the cables passing through the two sets of adjustable rollers 4-9 can be driven to swing back and forth, so that the cables can be evenly wound on the rewinding roller 3-1; in the actual working process, when a steering sensor 4-14 installed on the mobile mounting seat 4-2 collides with the corresponding trigger member 4-13, the driving motor in the reciprocating wire assembly 4 can be controlled to rotate in the opposite direction, thereby driving the reciprocating screw 4-5 to rotate in the opposite direction, thereby achieving the purpose of driving the cable to swing back and forth.
Claims
1. A cable retracting and releasing device for low-voltage line construction, characterized by: The invention comprises a bracket (1) with a plurality of support legs (7) and a plurality of casters (8) installed at the bottom, a reel assembly (3) installed on the bracket (1) for reeling in and out cables, a reciprocating wire assembly (4) installed on the bracket (1) for driving the cables to move back and forth, an inner cleaning assembly (5) and an outer cleaning assembly (6) installed on the bracket (1) for cleaning cables, the reciprocating wire assembly (4) comprising a reciprocating screw (4-5) rotatably connected and laterally arranged on the bracket (1), a roller mechanism installed on the reciprocating screw (4-5) via a nut, and a driving motor for driving the reciprocating screw (4-5) to rotate, the reel assembly (3) comprising a reel roller (3-1) rotatably connected and laterally arranged on the bracket (1), (1) is provided with a retracting and unretracting motor (3-2) for driving the retracting and unretracting roller (3-1); the external cleaning assembly (6) includes an external cleaning seat plate (6-5) installed on the bracket (1), a wire-passing slot extending along the length direction of the external cleaning seat plate (6-5) is provided, a cable-threading slider (6-8) corresponding to the wire-passing slot is slidably connected to the front end surface of the external cleaning seat plate (6-5), and a conical slot for allowing the cable to pass through is provided on the cable-threading slider (6-8); two groups of external cleaning brushes (6-3) arranged opposite to each other are installed on the back side of the external cleaning seat plate (6-5), and the external cleaning assembly (6) also includes two groups of external vertical guide rollers (6-2) rotatably connected and distributed left and right and two groups of external transverse guide rollers (6-4) distributed up and down.
2. The cable retracting and unretracting device for low-voltage line construction according to claim 1, characterized in that: The roller mechanism comprises a movable mounting seat (4-2) connected to a reciprocating screw (4-5) via a nut; two sets of roller seat plates (4-7) arranged opposite to each other are fixedly connected to the top of the movable mounting seat (4-2); a distance adjustment guide rod (4-11) arranged parallel to the reciprocating screw (4-5) is fixedly connected between the two sets of roller seat plates (4-7); two sets of adjustable roller seats (4-6) are slidably connected to the distance adjustment guide rod (4-11); and each adjustable roller seat (4-6) is provided with a plurality of adjustable roller seats (4-7). -6) are rotatably connected to longitudinally arranged adjustable rollers (4-9), and also include a fixed roller (4-8) rotatably connected between the two groups of roller seat plates (4-7) and arranged parallel to the reciprocating screw (4-5); and also include a pitch-adjusting screw (4-10) rotatably connected between the two groups of roller seat plates (4-7) and arranged parallel to the reciprocating screw (4-5), and each adjustable roller seat (4-6) is connected to the pitch-adjusting screw (4-10) through a nut.
3. The cable retracting and releasing device for low-voltage line construction according to claim 1, characterized in that: The wire assembly (4) further comprises two sets of screw seat plates (4-4) fixedly connected to the bracket (1) and arranged opposite to each other; a guide rod (4-1) arranged parallel to the reciprocating screw (4-5) is installed between the two sets of screw seat plates (4-4); and guide wheels (4-3) arranged in pairs and in rolling contact with the guide rods (4-1) are rotatably connected to the movable mounting seat (4-2).
4. The cable retracting and releasing device for low-voltage line construction according to claim 1, characterized in that: The wire assembly (4) further comprises a steering screw (4-12) fixedly connected between the two sets of screw seat plates (4-4) and arranged parallel to the reciprocating screw (4-5), two sets of trigger members (4-13) being screwed onto the steering screw (4-12), and two sets of steering sensors (4-14) mounted on the movable mounting seat (4-2), the two sets of steering sensors (4-14) corresponding to the two sets of trigger members (4-13) respectively.
5. The cable retracting and unretracting device for low-voltage line construction according to claim 1, characterized in that: The external cleaning assembly (6) further comprises two sets of guide groove members (6-7) fixedly connected to and arranged opposite to each other on the front end surface of the external cleaning base plate (6-5); the two sets of guide groove members (6-7) are respectively located above and below the wire-passing slot opening provided on the external cleaning base plate (6-5); and the cable-threading slider (6-8) is located between the two sets of guide groove members (6-7) and is slidably connected to the two sets of guide groove members via the slider.
6. The cable retracting and unretracting device for low-voltage line construction according to claim 1, characterized in that: The inner cleaning assembly (5) comprises an inner cleaning seat plate (5-5) with a slot for allowing a cable to pass through in the middle, two groups of inner cleaning brushes (5-3) respectively located above and below the slot and arranged opposite to each other are installed on the back of the inner cleaning seat plate (5-5), second inner roller seats (5-6) are fixedly connected to the backs of both ends of the inner cleaning seat plate (5-5), two groups of inner transverse guide rollers (5-4) respectively arranged corresponding to the two groups of inner cleaning brushes (5-3) are rotatably connected between the two groups of second inner roller seats (5-6); first inner roller seats (5-1) connected to the inner cleaning seat plate (5-5) are respectively arranged above and below each second inner roller seat (5-6), and inner vertical guide rollers (5-2) are rotatably connected between the two groups of first inner roller seats (5-1) distributed in an upper and lower manner.
7. The cable retracting and unretracting device for low-voltage line construction according to claim 1, characterized in that: The invention also includes a protective cover (2) installed on the bracket (1) and arranged outside the reel assembly (3), the reciprocating wire assembly (4) and the internal cleaning assembly (5); a slot for installing the external cleaning assembly (6) is opened on the front side of the protective cover (2); and an inspection window is provided on the protective cover (2).