CN110683427A

CN110683427A - Electric wire device used on construction site and electric wire threading and protecting method

Info

Publication number: CN110683427A
Application number: CN201911079013.1A
Authority: CN
Inventors: 张颖倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-01-14

Abstract

The invention belongs to the field of wire devices, and particularly relates to a wire device for a construction site, which comprises a base, supports, a winding roller, a belt wheel A, a synchronous belt, a belt wheel B, a damping ring, an electric drive module and the like, wherein the base with a moving device is symmetrically provided with the two supports; when the transition cable that is released and is in user state from the winding roller takes place to stumble under the workman careless circumstances, be in unsettled transition cable and can stimulate the winding roller under the exogenic action and take place two to three circles of rotations, the volute spiral spring is compressed and the energy storage, the transition cable is continued to be released certain length by rotatory winding roller and is buffered in order to form the external force that receives the transition cable, avoid the transition cable to stumble and take place to drag the damage under the exogenic action, the life of extension transition cable, and guarantee that the workman that takes place to stumble with the transition cable can not take place not to stumble and fall because of taking place not having the buffering with the cable, and then guarantee staff's activity safety.

Description

Electric wire device used on construction site and electric wire threading and protecting method

Technical Field

The invention belongs to the field of electric wire devices, and particularly relates to an electric wire device used on a construction site and an electric wire threading and protecting method.

Background

In order to facilitate the use of power at a construction site, a longer transition cable is usually required to extend the power outlet to the vicinity of the equipment at the site to which the power is to be connected. The transition cable serving as a power socket on a general construction site is long in length and is generally randomly stacked or placed on the ground; on one hand, transition cables on the ground have certain potential safety hazards of electric leakage to influence the activities of workers in a construction site, and on the other hand, the cables stacked together can be dead and tied in the paying-off process to influence the efficiency of equipment for connecting a power supply; after the use of transition cable was ended, its recovery was regular troublesome and efficiency is lower, and the cable after retrieving leads to appearing the end of death in the reuse process because its later stage is piled nonstandard, influences the availability factor of cable.

To the problems existing in the use and recovery of the transition cable serving as the extension power supply on the construction site, it is necessary to design a cable device which ensures that the transition cable is suspended without potential safety hazards of electric leakage and does not influence the activity of workers, is convenient to recover and has higher recovery efficiency in the use process.

The invention relates to a wire device for construction sites, which solves the problems.

Disclosure of Invention

In order to solve the above-mentioned defects in the prior art, the invention discloses a wire device for a construction site, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

An electrical wiring device for use on a worksite, comprising: the device comprises a base, supports, a winding roller, a belt wheel A, a volute spiral spring, a shaft sleeve, a ring A, a synchronous belt, a belt wheel B, a shaft B, a clamping block A, a damping ring, a ring C, a clamping block B, a sliding block, a spring D, a driving wheel, a clamping block C and an electric drive module, wherein the two supports are symmetrically arranged on the base with a moving device; one end of a winding roller for winding the cable is rotationally matched with the bracket on the same side, and the other end of the winding roller is rotationally matched with a ring A arranged at the top end of the bracket on the same side; the winding roller is fixedly provided with a belt wheel A, and the belt wheel A is connected with a shaft sleeve rotating on the winding roller through a volute spiral spring; the belt wheel A and the shaft sleeve are both positioned on the inner side of the ring A, and the shaft sleeve is positioned between the belt wheel A and the ring A; the shaft sleeve and the ring A are provided with structures for manually limiting and manually releasing the limitation on the rotation of the shaft sleeve; when the rotation of the shaft sleeve is not limited, the belt wheel A drives the shaft sleeve to rotate through the volute spiral spring; when the rotation of the sleeve is restricted, the sleeve restricts the rotation of the pulley a by the spiral spring.

The shaft B is rotatably matched with a fixed seat A arranged on the base, and the shaft B is provided with a belt wheel B; the belt wheel B is in transmission connection with the belt wheel A through a synchronous belt; the ring C is arranged on the fixed seat A through a damping ring, and the ring C and the shaft B are the same as the central axis; a sliding block is arranged on the cylindrical surface of the ring C in a sliding groove D which runs through the outer cylindrical surface and the inner cylindrical surface of the ring C and slides along the radial direction of the ring C; one end of the sliding block, which is positioned at the inner cylindrical surface of the ring C, is matched with a clamping block A arranged on the shaft B, and the other end of the sliding block is provided with an inclined plane; the sliding block is provided with a spring D for restoring the movement of the sliding block.

The driving wheel driven by the electric drive module to rotate is coaxial with the shaft B; the end surface of the driving wheel is provided with a circular groove with the same central axis as the shaft B, and the ring C is positioned in the circular groove; a clamping block C with an inclined plane is installed on the inner wall of the circular groove, the inclined plane on the clamping block C is matched with the inclined plane at one end of the sliding block, and the clamping block C is matched with a clamping block B installed on the outer cylindrical surface of the ring C.

As a further improvement of the technology, a stepped circular groove is formed at one end of the winding roller, which is positioned at the end where the ring A is matched with the winding roller in a rotating way; a rotary round block is arranged at the tail end of the shaft A fixedly arranged on the bracket at the same side; rotatory disk and the terminal rotation of axle A in the ladder circular slot, the cooperation of ladder circular slot and axle A and rotatory disk guarantees that the winding roller can not produce wearing and tearing because of with the direct normal running fit of support, the life of extension winding roller. Four universal wheels with self-locking structures are symmetrically arranged at the bottom of the base, so that the movement of the invention is facilitated.

As a further improvement of the technology, the side stop A and the side stop B are symmetrically arranged on two sides of the part, wound with the cable, of the winding roller, the side stop A and the side stop B form protection on the cable wound on the winding roller, the cable wound on the winding roller is prevented from being separated from two sides of the winding roller, and therefore the cable can be completely wound on the winding part of the winding roller.

As the further improvement of this technique, the interval between above-mentioned fixture block B and the slider is less than fixture block C's cross-sectional width, guarantees that fixture block C drives ring C rotatory through fixture block B with it contact when acting on the slider, and rotatory ring C rethread is pushed down the slider of fixture block C and is rotated with the fixture block A drive axle B of slider interact.

As a further improvement of the technology, a ring groove A is circumferentially formed on the inner wall of a round hole, rotatably matched with the winding roller, on the belt pulley A, and the ring groove A is communicated with the end face, opposite to the ring A, on the belt pulley A; the shaft sleeve part is positioned in the ring groove A; the scroll spring is nested on the shaft sleeve; one end of the volute spiral spring is connected with the shaft sleeve, and the other end of the volute spiral spring is connected with the inner wall of the annular groove A. The annular groove A provides a certain accommodating space for the volute spiral spring and the shaft sleeve, so that the space occupied by the volute spiral spring and the shaft sleeve on the winding roller is effectively reduced, and the equipment structure is more compact.

As a further improvement of the technology, a chute A is arranged on the end surface of the shaft sleeve opposite to the ring A; a limiting block A with a sharp angle at one end slides in the chute A along the direction parallel to the central axis of the winding roller; the sharp-angled end of the limiting block A is matched with a plurality of limiting grooves which are uniformly distributed on the end surface of the ring A in the circumferential direction around the central axis; a spring A for resetting the limiting block A is arranged in the chute A; two guide blocks are symmetrically arranged on two sides of the limiting block A, and the two guide blocks respectively slide in two guide grooves on the inner wall of the sliding groove A along the direction parallel to the central axis of the shaft sleeve; the inner wall of the ring A is circumferentially provided with a ring groove B around the central axis thereof, and the ring groove B is communicated with a plurality of limiting grooves; a plurality of sliding chutes B communicated with the ring groove B are uniformly arranged on the end surface of the ring A, which is not provided with the limiting groove, in the circumferential direction around the central axis of the ring A; the ring B is nested and slides in the ring groove B along the central axis direction of the winding roller, and one ends of a plurality of push rods A which are uniformly distributed on the end surface of the ring B in the circumferential direction respectively slide in the corresponding limit grooves; the push rods A are respectively matched with the sharp-angled ends of the limiting blocks A; the push rod A is provided with a limiting block B for limiting the sliding distance of the push rod A in the limiting groove; the pressing plate at one end of the winding roller is fixedly connected with the ring B through push rods B of sliding chutes B on the end surface of the transverse ring A; the outer cylindrical surface of the ring A is provided with a chute C communicated with the annular groove B, and the inner wall of the chute C is circumferentially provided with an annular groove C around the central axis of the chute B; the spring C positioned in the ring groove B is nested on the winding roller; one end of the spring C is connected with the ring B, and the other end of the spring C is connected with the inner wall of the ring groove B; an L-shaped plate with one end provided with an inclined plane slides in the chute C along the radial direction of the ring A; the inclined end of the L plate is matched with the ring B; the L plate is provided with a compression spring plate A, and the compression spring plate A is positioned in the ring groove C; the spring B positioned in the ring groove C is nested on the L plate, and the spring B is positioned between the pressure spring plate A and the outer cylindrical surface of the ring A; one end of the spring B is connected with the pressure spring plate A, and the other end of the spring B is connected with the inner wall of the ring groove C.

As a further improvement of the technology, the spring a, the spring B, the spring C and the spring D are compression springs; one end of the spring A is connected with the inner wall of the sliding groove A, and the other end of the spring A is connected with the end face of the limiting block A. The spring B plays a reset function for the sliding of the L plate along the chute C, and the spring C plays a reset function for the sliding of the ring B along the central axis of the winding roller.

As a further improvement of the technology, a ring groove D is circumferentially formed on the inner wall of the chute D; a compression spring plate B is nested on the sliding block and moves in the ring groove D along the radial direction of the ring C along with the sliding block; the spring D is nested on the sliding block and is positioned in the annular groove D; the spring D is positioned between the pressure spring plate B and the inner wall of the ring C; one end of the spring D is connected with the tension spring plate B, and the other end of the spring D is connected with the inner wall of the annular groove D.

As a further improvement of the technology, a fixed seat B is installed on the base, and the electric drive module is installed on the fixed seat B through a fixed seat C; an output shaft of the electric drive module is in rotary fit with the fixed seat B; the drive wheel is mounted on the output shaft of the electric drive module.

As a further improvement of the technology, the end face of the ring A, which is opposite to the shaft sleeve, is a smooth face, and the end face of the push rod A is a smooth face, so that when the tip end of the limiting block A and the end face of the ring A move relatively, no frictional resistance is generated between the tip end of the limiting block A and the end faces of the ring A and the push rod A.

Compared with the traditional electric wire device, the electric drive module is operated to drive the winding roller to wind and recover the transition cable with one end fixed on the winding roller, the winding efficiency of the electric drive module is higher, the standard recovery of the cable is realized, the cable twisting phenomenon in the cable recovery process in the traditional manual mode is avoided, and the service life of the electric wire is prolonged to a certain extent. When the transition cable wound on the transition cable releasing device is released, the cable is regularly wound on the winding roller, so that dead knots caused by disordered cable winding are avoided, and the cable releasing efficiency is high. After the transition cable is placed near the target electrical equipment, the cable part is overhead, so that the trampling abrasion of workers moving nearby on the cable is avoided, and the service life of the cable is prolonged; meanwhile, the phenomenon of electric leakage caused by friction damage of the overhead transition cable and the ground can not occur, so that the personal safety of surrounding workers is protected; at the moment, the rotation of the winding roller is locked by the limiting block A, so that the transition cable connected with the equipment is prevented from being unlimitedly released from the winding roller under the action of external force; after the transition cable after the use is wound and recovered by the winding roller, the rotation of the winding roller is locked by the limiting block A again, the transition cable is prevented from being randomly released from the winding roller under the action of external force, and the transition cable is effectively recovered and stored.

In addition, when the transition cable that is released and is in user state from the winding roller takes place to stumble under the workman careless condition, be in unsettled transition cable and can take place two to three circles of rotations at the pulling winding roller under the exogenic action, the volute spiral spring is compressed and the energy storage, the transition cable is continued to be released certain length by rotatory winding roller and is buffered in order to form the external force that receives the transition cable, avoid the transition cable to stumble takes place to drag the damage under the exogenic action, the life of extension transition cable, and guarantee that the workman that takes place to stumble with the transition cable can not fall because take place not cushioned stumbling with the cable and fall, and then guarantee staff's activity safety. Meanwhile, the suspended transition cable can pull the winding roller to rotate for two to three circles under the action of external force, so that the phenomenon that the transition cable is pulled down under the condition of large external force is avoided to a certain extent, the stability of the equipment is ensured, the suspension of the transition cable in a use state is continuously kept, and the normal use of the equipment is not influenced. The invention has simple structure and better use effect.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

FIG. 2 is a schematic cross-sectional view of the bracket, shaft A, rotary round block, winding roller, side block A, side block B, belt wheel A, volute spring, shaft sleeve, limiting block A, ring A, L plate, ring B, push rod A, push rod B and press plate.

Fig. 3 is a schematic cross-sectional view of the fit of the shaft sleeve, the limiting block a, the ring A, L plate, the ring B, the push rod a, the limiting block B, the push rod B and the pressure plate.

Fig. 4 is a schematic section view of the matching of the shaft sleeve, the spring A, the limiting block A, the ring B and the push rod A.

Fig. 5 is a schematic cross-sectional view of the synchronous belt, belt pulley B, shaft B, fixing seat a, damping ring, ring C, driving wheel and electric drive module.

Fig. 6 is a schematic cross-sectional view of the driving wheel, the block C, the block B, the ring C, the slider, and the block a.

FIG. 7 is a cross-sectional view of the pulley A, spiral spring, sleeve and winding roller.

Fig. 8 is a schematic cross-sectional view of a winding roller and its winding.

Figure 9 is a schematic view of pulley a.

Fig. 10 is a schematic cross-sectional view of the sleeve and its components.

Fig. 11 is a schematic diagram of two views of ring a.

Fig. 12 is a schematic cross-sectional view of ring a.

Fig. 13 is a schematic view of the cooperation of the pressing plate, the push rod B, the ring B, the push rod a and the stopper B.

Fig. 14 is a schematic cross-sectional view of the driving wheel and the latch C.

Fig. 15 is a schematic cross-sectional view of the ring C engaging with the latch B.

Number designation in the figures: 1. a base; 2. a universal wheel; 3. a support; 4. a winding roller; 5. a stepped circular groove; 6. an axis A; 7. rotating the round block; 8. a side baffle A; 12. a side baffle B; 13. a pulley A; 14. a ring groove A; 15. a volute spiral spring; 16. a shaft sleeve; 17. a chute A; 18. a guide groove; 19. a limiting block A; 20. a guide block; 21. a spring A; 22. ring A; 23. a ring groove B; 24. a limiting groove; 25. a chute B; 26. a chute C; 27. a ring groove C; 28. an L plate; 29. a spring B; 30. a compression spring plate A; 31. ring B; 32. a push rod A; 33. a limiting block B; 34. pressing a plate; 35. a push rod B; 36. a spring C; 37. a synchronous belt; 38. a belt pulley B; 39. a shaft B; 40. a clamping block A; 41. a fixed seat A; 42. a damping ring; 43. ring C; 44. a chute D; 45. a ring groove D; 46. a clamping block B; 47. a slider; 48. a compression spring plate B; 49. a spring D; 50. a drive wheel; 51. a circular groove; 52. a clamping block C; 53. a fixed seat B; 54. an electric drive module; 55. and a fixed seat C.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1, it includes base 1, bracket 3, winding roller 4, pulley a13, spiral spring 15, shaft sleeve 16, ring a22, timing belt 37, pulley B38, shaft B39, block a40, damping ring 42, ring C43, block B46, slider 47, spring D49, driving wheel 50, block C52, electric drive module 54, wherein as shown in fig. 1, two brackets 3 are symmetrically mounted on base 1 with moving device; as shown in fig. 2, one end of the winding roller 4 for winding the cable is rotatably fitted to the same side bracket 3, and the other end is rotatably fitted to a ring a22 installed at the top end of the same side bracket 3; a belt wheel A13 is fixedly arranged on the winding roller 4, and a belt wheel A13 is connected with a shaft sleeve 16 rotating on the winding roller 4 through a spiral spring 15; pulley a13 and bushing 16 are both located inside ring a22, and bushing 16 is located between pulley a13 and ring a 22; as shown in fig. 3, the boss 16 and the ring a22 have a structure for manually restricting and manually releasing the restriction of the rotation of the boss 16; as shown in fig. 2 and 3, when the rotation of sleeve 16 is not restricted, pulley a13 rotates sleeve 16 via spiral spring 15; when the rotation of the sleeve 16 is restricted, the sleeve 16 restricts the rotation of the pulley a13 by the spiral spring 15.

As shown in fig. 1 and 5, a shaft B39 is rotatably matched with a fixed seat a41 arranged on the base 1, and a pulley B38 is arranged on a shaft B39; the belt wheel B38 is in transmission connection with the belt wheel A13 through a synchronous belt 37; as shown in fig. 5, the ring C43 is mounted on the fixed seat a41 through the damping ring 42, and the ring C43 is concentric with the shaft B39; as shown in fig. 6 and 15, the sliding block 47 slides in the sliding groove D44 penetrating through the outer cylindrical surface and the inner cylindrical surface of the ring C43 along the radial direction of the ring C43; as shown in fig. 5 and 6, one end of the sliding block 47 at the inner cylindrical surface of the ring C43 is matched with a block a40 mounted on the shaft B39, and the other end of the sliding block 47 is provided with an inclined surface; the slider 47 is provided with a spring D49 for restoring the movement thereof.

As shown in fig. 1 and 5, the driving wheel 50 driven to rotate by the electric drive module 54 is concentric with the shaft B39; as shown in fig. 5 and 14, a circular groove 51 having the same center axis as the shaft B39 is formed in the end surface of the driving wheel 50, and the ring C43 is located in the circular groove 51; as shown in fig. 6, a latch C52 having a slant surface is installed on the inner wall of the circular groove 51, the slant surface of the latch C52 is engaged with the slant surface of one end of the slider 47, and the latch C52 is engaged with a latch B46 installed on the outer cylindrical surface of the ring C43.

As shown in fig. 8, a stepped circular groove 5 is formed at one end of the winding roller 4, which is rotatably engaged with the ring a 22; as shown in fig. 2, the end of the shaft a6 fixed on the bracket 3 on the same side is provided with a rotary round block 7; the tail ends of the rotating round block 7 and the shaft A6 rotate in the stepped round groove 5, and the stepped round groove 5, the shaft A6 and the rotating round block 7 are matched to ensure that the winding roller 4 cannot be abraded due to direct rotating matching with the support 3, so that the service life of the winding roller 4 is prolonged. As shown in fig. 1, four universal wheels 2 with self-locking structures are symmetrically arranged at the bottom of a base 1; on one hand, the universal wheels 2 facilitate the movement of the invention; on the other hand, when the wire is pulled from the winding roller 4, the four universal wheels 2 are locked through the self-locking structures on the universal wheels 2, so that the universal wheels 2 do not rotate, the whole device can not move under the pulling of the cable in the process of pulling the cable, and the disconnection of the electric socket on the support 3 and the electric connection of the power supply caused by the whole movement of the device is avoided.

As shown in fig. 1 and 2, the side stoppers A8 and B12 are symmetrically installed on both sides of the cable winding portion of the winding roller 4, and the side stoppers A8 and B12 protect the cable wound on the winding roller 4 and prevent the cable wound on the winding roller 4 from being separated from both sides of the winding roller 4, thereby ensuring that the cable can be completely wound on the winding portion of the winding roller 4.

As shown in fig. 6, the distance between the latch B46 and the slider 47 is smaller than the cross-sectional width of the latch C52, so that the latch C52 acts on the slider 47, and the latch B46 in contact with the slider 47 drives the ring C43 to rotate, and the rotating ring C43 drives the shaft B39 to rotate through the slider 47 pressed down by the latch C52 and the latch a40 interacting with the slider 47.

As shown in fig. 9, a circular groove a14 is circumferentially opened on the inner wall of the circular hole of the pulley a13 which is rotatably engaged with the winding roller 4; as shown in fig. 2 and 3, the annular groove a14 communicates with the end face of the pulley a13 opposite the ring a 22; the sleeve 16 is partially located in the annular groove A14; as shown in fig. 7, the spiral spring 15 is nested on the boss 16; one end of scroll spring 15 is connected to boss 16, and the other end is connected to the inner wall of annular groove a 14. The circular groove a14 provides a certain accommodation space for the scroll spring 15 and the shaft sleeve 16, effectively reducing the space occupied by the scroll spring 15 and the shaft sleeve 16 on the winding roller 4, and making the device structure more compact.

As shown in fig. 3 and 10, a sliding groove a17 is formed on the end surface of the shaft sleeve 16 opposite to the ring a 22; as shown in fig. 4, a limiting block a19 with a sharp angle at one end slides in the chute a17 along a direction parallel to the central axis of the winding roller 4; as shown in fig. 4, 11 and 12, the sharp-angled end of the limiting block a19 is matched with a plurality of limiting grooves 24 which are uniformly distributed on the end surface of the ring a22 in the circumferential direction around the central axis; as shown in fig. 3 and 10, a spring a21 for resetting the limit block a19 is installed in the chute a 17; two guide blocks 20 are symmetrically arranged at two sides of the limit block A19, and the two guide blocks 20 respectively slide in two guide grooves 18 on the inner wall of the sliding groove A17 along the direction parallel to the central axis of the shaft sleeve 16; as shown in fig. 11 and 12, the inner wall of the ring a22 is circumferentially provided with a ring groove B23 around the central axis thereof, and the ring groove B23 is communicated with a plurality of limiting grooves 24; a plurality of sliding grooves B25 communicated with the ring groove B23 are uniformly arranged on the end surface of the ring A22, which is not provided with the limiting groove 24, in the circumferential direction around the central axis of the ring A22; as shown in fig. 2, 3 and 13, the ring B31 is nested and slides in the ring groove B23 along the central axis direction of the winding roller 4, and one end of a plurality of push rods a32 which are evenly distributed on the end surface of the ring B31 in the circumferential direction respectively slide in the corresponding limit grooves 24; as shown in fig. 4, a plurality of push rods a32 are respectively matched with the sharp-angled ends of the limit blocks a 19; as shown in fig. 2, 3 and 13, the push rod a32 is provided with a limit block B33 for limiting the sliding distance of the push rod a32 in the limit groove 24; the pressure plate 34 positioned at one end of the winding roller 4 is fixedly connected with a ring B31 through push rods B35 of a sliding groove B25 on the end surface of a plurality of transverse rings A22; as shown in fig. 11 and 12, the outer cylindrical surface of the ring a22 is provided with a sliding groove C26 communicated with the groove B23, and the inner wall of the sliding groove C26 is provided with a groove C27 circumferentially around the central axis of the sliding groove B25; as shown in fig. 2 and 3, the spring C36 located in the ring groove B23 is nested on the winding roller 4; one end of the spring C36 is connected with the ring B31, and the other end of the spring C36 is connected with the inner wall of the ring groove B23; an L plate 28 with one end provided with a bevel is arranged in the chute C26 in a sliding mode along the radial direction of the ring A22; the beveled end of L-plate 28 mates with ring B31; the L plate 28 is provided with a compression spring plate A30, and the compression spring plate A30 is positioned in the ring groove C27; spring B29, located in ring groove C27, is nested on L plate 28, and spring B29 is located between the outer cylindrical surfaces of compression spring plate A30 and ring A22; one end of the spring B29 is connected with the pressure spring plate A30, and the other end is connected with the inner wall of the annular groove C27.

The sharp corner at one end of the limiting block A19 facilitates the sharp corner end of the limiting block A19 to rapidly reach and position the limiting groove 24 when one end of the limiting block A19 needs to enter the limiting groove 24, and under the interaction between the sharp corner inclined surface and the edge of the limiting groove 24, the shaft sleeve 16 can perform small-angle self-adaptive rotation and drive the limiting block A19 to align with the corresponding limiting groove 24.

As shown in fig. 3 and 6, the spring a21, the spring B29, the spring C36 and the spring D49 are compression springs; one end of the spring A21 is connected with the inner wall of the sliding groove A17, and the other end is connected with the end face of the limit block A19. The spring B29 exerts a return function for the sliding of the L-plate 28 along the chute C26, and the spring C36 exerts a return function for the sliding of the ring B31 along the central axis of the wind roller 4.

As shown in fig. 15, a circumferential groove D45 is formed on the inner wall of the sliding groove D44; as shown in fig. 6, a compression spring plate B48 is nested on the sliding block 47, and the compression spring plate B48 moves in the ring groove D45 along the radial direction of the ring C43 along with the sliding block 47; the spring D49 is nested on the sliding block 47, and the spring D49 is positioned in the annular groove D45; the spring D49 is positioned between the pressure spring plate B48 and the inner wall of the ring C43; one end of the spring D49 is connected with the tension spring plate B, and the other end is connected with the inner wall of the ring groove D45.

As shown in fig. 1, the base 1 is provided with a fixing seat B53, and the electric drive module 54 is mounted on the fixing seat B53 through a fixing seat C55; as shown in fig. 5, the output shaft of the electric drive module 54 is rotatably engaged with the fixed seat B53; the drive wheel 50 is mounted on the output shaft of the electric drive module 54.

As shown in fig. 2, 3 and 4, the end surface of the ring a22 opposite to the bushing 16 is a smooth surface, and the end surface of the push rod a32 is a smooth surface, so that when the sharp-angled end of the stopper a19 and the end surface of the ring a22 move relatively, no frictional resistance is generated between the sharp-angled end of the stopper a19 and the end surfaces of the ring a22 and the push rod a 32.

One end of the transition cable wound on the winding roller 4 in the invention is electrically connected with an electric socket arranged on the bracket 3, and the electric connection adopts the prior art, such as: the electric connection principle of the rotary disc socket can realize the electric connection between a rotating electric wire and a static electric wire, and a specific technology can adopt a brush technology.

The electric drive module 54 of the present invention is made up of a self-locking motor, a control unit and a reducer; the electric drive module 54 is electrically connected to a power source.

The working process of the invention is as follows: in an initial state, a transition cable with a certain length is wound on the winding roller 4, and the fixed end of the transition cable is electrically connected with an electric socket arranged on the bracket 3; the spring A21 is in a compressed state, so that when the limiting block A19 is separated from the initial corresponding limiting groove 24 and then enters the corresponding limiting groove 24 again, the limiting block A19 instantly enters the limiting groove 24 under the reset action of the further compressed spring A21 to complete the rotation limitation of the shaft sleeve 16 and simultaneously complete the reset of the ring B31 under the combined action of the spring A36 and the shaft sleeve.

In the initial state, the guide block 20 is positioned at one end of the limiting groove 24 close to the ring A22, the sharp-angled end of the limiting block A19 is positioned in the corresponding limiting groove 24 on the ring A22 and is tightly attached to the tail end of the corresponding push rod A32, and at the moment, the limiting block A19 is matched with the limiting groove 24 to limit the rotation of the shaft sleeve 16 relative to the winding roller 4; the tail ends of a plurality of push rods A32 are respectively positioned in the corresponding limiting grooves 24. The distance between the limiting block B33 and the side wall of the ring groove B23 is equal to the length of the limiting block A19 at the sharp-angled end in the limiting groove 24, so that when the tail end of the push rod A32 is coplanar with the end face of the ring A22, the limiting block B33 is just in contact with the inner wall of the ring groove B23 and limits the push rod A32 to continue moving, and the tail end of the push rod A32 is prevented from forming obstruction to the rotation of the shaft sleeve 16 relative to the winding roller 4 due to the end face of the protruding ring A22. The distance between the pressing plate 34 and the end face of one end of the winding roller 4 is greater than the length of the sharp-angled end of the limiting block A19 in the limiting groove 24, so that the pressed pressing plate 34 can drive the push rod A32 to complete the separation of the sharp-angled end of the limiting block A19 in the limiting groove 24 from the corresponding limiting groove 24 through a plurality of push rods B35 and a ring B31.

In the initial state, the end of the slider 47 located at the inner cylindrical surface of the ring C43 is located just in the sliding groove D44, the radius of the circle whose center is located at the central axis of the shaft B39 is slightly smaller than the radius of the cross section of the inner cylindrical surface of the ring C43, and the minimum radius of the circle whose center is located at the central axis of the shaft B39 is larger than the radius of the circle whose center is located at the central axis of the shaft B39.

When the power socket is required to be extended to the electric equipment needing power on the site by using the invention through the transition cable, the invention is firstly pushed to be close to the nearest power supply, the four universal wheels 2 at the bottom of the base 1 are locked, and the power socket on the bracket 3 is electrically connected with the power supply.

Then pressing a pressure plate 34 which is a certain distance away from the end face of the winding roller 4 along the central axis direction of the winding roller 4, wherein the pressure plate 34 drives a ring B31 positioned in a ring groove B23 to synchronously move relative to the winding roller 4 through a plurality of push rods B35, and the ring B31 drives a plurality of push rods A32 to synchronously move; the push rod A32 which is the same as the limiting block A19 and the limiting groove 24 pushes the limiting block A19 to be quickly separated from the corresponding limiting groove 24; when the sharp-angled end of the limit block A19 is completely and just separated from the corresponding limit groove 24, the limit block B33 arranged on the push rod A32 just meets the side wall of the ring groove B23 and prevents the push rod A32 from moving continuously; the end face of the end of push rod a32 is now coplanar with the end face of ring a22, spring a21 is further compressed and charged, ring B31 just clears the beveled end of L-plate 28, L-plate 28 forms a stop for ring B31, spring C36 is compressed and charged, and stop a19 releases the rotational limit of bushing 16 relative to ring a 22. During the process of ring B31 passing over the beveled end of L-plate 28, ring B31 acts on the bevel of the beveled end of L-plate 28, causing L-plate 28 to move radially outward of ring a 22; the L plate 28 gradually compresses spring B29 and causes spring B29 to charge via compression spring plate a 30; when the ring B31 crosses the L plate 28, the compression amount of the spring B29 reaches the maximum, under the reset action of the spring B29, the L plate 28 resets instantly and limits the reset of the ring B31, so that the ring B31 drives a plurality of push rods A32 to fill and level up a plurality of limiting grooves 24 on the ring A22, and when the shaft sleeve 16 drives the limiting block A19 to rotate relative to the ring A22, the end face of the ring A22, which is in contact with the sharp-angled end section of the limiting block A19, always keeps a plane and does not hinder the rotation of the limiting block A19.

Then, pulling the free end of the transition cable wound on the winding roller 4 to move to the target electrical equipment, and driving the winding roller 4 to rotate by the transition cable; the winding roller 4 drives the side block A8, the side block B12 and the belt wheel A13 which are arranged on the winding roller to synchronously rotate; pulley a13 rotates sleeve 16 relative to ring a22 via wrap spring 15; the shaft sleeve 16 drives the limiting block A19 to circumferentially slide around the central axis of the winding roller 4 relative to the end surface of the ring A22; because the end surface of the ring A22 and the end surface of the push rod A32 are both smooth surfaces, the rotation of the shaft sleeve 16 is not resisted, and the scroll spring 15 is not deformed; meanwhile, the belt pulley A13 drives the belt pulley B38 to rotate through the synchronous belt 37, and the belt pulley B38 drives the shaft B39 to rotate; at this time, since the latch a40 does not interfere with the slider 47 and the rotation of the shaft B39 is not hindered, it is labor-saving to pull and release the transition cable.

Stopping pulling the transition cable when the free end of the transition cable reaches the target electrical device; at the moment, the L plate 28 is pulled outwards manually, the L plate 28 compresses the spring B29 through the tension spring plate A and stores energy through the spring B29, the reset limitation of the ring B31 is relieved by the inclined plane end in the ring groove B23 on the L plate 28, under the reset action of the spring C36, the ring B31 drives the push rods A32, the push rods B35 and the pressure plate 34 to reset instantly, the limit block B33 resets along with the push rods A32, and the push rods A32 quit the space occupied by the sharp angle end of the limit block A19 in the limit groove 24 in the initial state occupied by the push rods A32; then the force on the L-plate 28 is removed, and the L-plate 28 is momentarily restored by the restoring action of the spring B29.

In the process of resetting the push rod A32, if the sharp-angled end of the limit block A19 is just opposite to the notch of the corresponding limit groove 24 or the sharp-angled end of the limit block A19 is located in the range of the notch of the corresponding limit groove 24, the limit block A19 enters the corresponding limit groove 24 instantly under the resetting action of the spring A21 to complete the rotation limitation of the shaft sleeve 16 while the push rod A32 resets instantly; if the sharp-angled end of the limit block A19 is in contact with the end face of the ring A22, after the push rod A32 and the L plate 28 are completely reset, the transition cable is continuously pulled slowly and slightly, so that the limit block A19 continuously rotates relative to the ring B31 and enters the corresponding limit groove 24, under the reset action of the spring A21, the sharp-angled end of the limit block A19 instantly enters the corresponding limit groove 24 and completes the rotation limitation of the shaft sleeve 16, and the transition cable on the winding roller 4 is prevented from being continuously released under the action of external force.

When the transition cable that is in user state is delivered and is in from winding roller 4 takes place to trip under the workman careless condition, be in unsettled transition cable and can stimulate winding roller 4 under the exogenic action and take place two to three circles of rotations, volute spiral spring 15 is compressed and the energy storage, the transition cable is continued to be delivered certain length by rotatory winding roller 4 and is buffered in order to form the external force that receives the transition cable, avoid the transition cable to trip take place to drag the damage under the exogenic action, the life of extension transition cable, and guarantee that the workman that takes place to trip with the transition cable can not be because of taking place not cushioned to trip and fall with the cable, and then guarantee staff's activity safety. After the worker is separated from the transition cable, the winding roller 4 recovers the transition cable with a certain length which is released out again under the reset of the volute spiral spring 15, and the transition cable is still in a suspended state.

When the use of the delivered transition cable is finished, the electrical connection with the electrical equipment is disconnected; then pressing a pressure plate 34 which is a certain distance away from the end face of the winding roller 4 along the central axis direction of the winding roller 4, wherein the pressure plate 34 drives a ring B31 positioned in a ring groove B23 to synchronously move relative to the winding roller 4 through a plurality of push rods B35, and the ring B31 drives a plurality of push rods A32 to synchronously move; the push rod A32 which is the same as the limiting block A19 and the limiting groove 24 pushes the limiting block A19 to be quickly separated from the corresponding limiting groove 24; when the sharp-angled end of the limit block A19 is completely and just separated from the corresponding limit groove 24, the limit block B33 arranged on the push rod A32 just meets the side wall of the ring groove B23 and prevents the push rod A32 from moving continuously; at this time, the end face of the end of the push rod A32 is coplanar with the end face of the ring A22, the spring A21 is further compressed and charged, the ring B31 just passes over the beveled end of the L plate 28, the L plate 28 limits the ring B31, the spring C36 is compressed and charged, and the limit block A19 releases the rotation limit of the sleeve 16 relative to the winding roller 4. Then the electric drive module 54 is started; the electric drive module 54 rotates the drive wheel 50; the inclined plane of the block C52 on the inner wall of the circular groove 51 on the driving wheel 50 is in quick contact with and interacts with the inclined plane of the inclined plane end of the slide block 47, and the slide block 47 drives the ring C43 to rotate; due to the presence of the damping ring 42, the rotation of the ring C43 is hindered to some extent, so that the rotation speed of the latch C52 is greater than that of the slider 47; the fixture block C52 drives the slide block 47 to move along the radial direction towards the central axis direction of the shaft B39; one end of the sliding block 47, which is matched with the fixture block A40, quickly slides out of the sliding groove D44 on the ring C43, so that the circle center of the tail end of one end, which is matched with the fixture block A40, of the sliding block 47 is smaller than the circle radius of the circle center of the tail end of the fixture block A40, which is located on the central axis of the shaft B39, and the spring D49 is compressed and stores energy; when the fixture block C52 meets the fixture block B46 on the outer cylindrical surface of the ring C43, the inclined surface of the inclined surface end of the fixture block A40 still contacts with the inclined surface of the inclined surface end of the slider 47, and the driving wheel 50 drives the ring C43 to synchronously rotate relative to the shaft B39 by overcoming the damping of the damping ring 42 through the fixture block C52 and the fixture block B46; when one end of the sliding block 47, which is matched with the clamping block A40, meets the clamping block A40, the ring C43 drives the shaft B39 to rotate reversely through the sliding block 47 and the clamping block A40; in the process that the fixture block C52 acts on the slider 47, if one end of the slider 47 abuts against the end face of the fixture block A40, the fixture block A40 drives the ring C43 to rotate through the slider 47, and meanwhile, the ring C43 drives the slider 47 to generate staggered friction with the fixture block A40; after the slide block 47 is completely staggered with the clamping block A40, the rotating speed of the ring C43 is lower than that of the driving wheel 50 due to the damping effect of the damping ring 42; the latch C52 further pushes the slider 47 to continue moving in the radial direction toward the central axis of the shaft B39; the circle center of the tail end of one end, matched with the clamping block A40, of the sliding block 47 is located on the central axis of the shaft B39, the circle radius is smaller than the circle radius of the tail end of the clamping block A40, the circle center of the tail end of the clamping block A39 is located on the central axis of the shaft B39, and the spring D49 is compressed and stores energy; when the fixture block C52 meets the fixture block B46 on the outer cylindrical surface of the ring C43, the inclined surface of the inclined surface end of the fixture block A40 still contacts with the inclined surface of the inclined surface end of the slider 47, and the driving wheel 50 drives the ring C43 to synchronously rotate relative to the shaft B39 by overcoming the damping of the damping ring 42 through the fixture block C52 and the fixture block B46; when the end of the slider 47 engaged with the latch a40 meets the latch a40, the ring C43 rotates the shaft B39 in the reverse direction via the slider 47 and the latch a 40.

The reversely rotating shaft B39 drives the belt wheel B38 to synchronously rotate, and the belt wheel B38 drives the belt wheel A13 to reversely rotate through the synchronous belt 37; the belt wheel A13 drives the winding roller 4 to rotate reversely, and the winding roller 4 winds the transition cable; meanwhile, the belt wheel a13 drives the shaft sleeve 16 to rotate reversely through the spiral spring 15, and the shaft sleeve 16 drives the sharp-angled end of the limit block a19 to circumferentially slide around the central axis of the winding roller 4 relative to the end surface of the ring a 22.

When the transition wire, which was previously unwound, is rewound on the winding roller 4, the operation of the electric drive module 54 is stopped and the drive wheel 50 stops rotating; under the return action of the spring D49, the rotation of the drive wheel 50 is limited due to the presence of the self-locking motor in the electric drive module 54; at this time, under the action of the inclined plane end of the stationary block C52, the slider 47 drives the ring C43 and the block a40 to continuously rotate reversely by a slight angle, and the block a40 drives the winding roller 4 to continuously rotate reversely by a slight angle through a series of transmissions; in the process, the slide block 47 is gradually separated from the block C52, and under the reset action of the spring D49, the slide block 47 is quickly reset and is quickly separated from the block A40. When the inclined plane end of the slide block 47 is just separated from the inclined plane end of the fixture block C52, the slide block 47 is just reset relative to the ring C43, and the slide block 47 is completely separated from the fixture block A40 and does not generate mutual interference any more; ring C43 stops rotating under the damping action of damping ring 42; the winding roller 4 stops rotating by the frictional force.

At this point, the L-plate 28 is pulled manually outward, the L-plate 28 compresses spring B29 through tension spring plate a and simultaneously spring B29 stores energy, the beveled end of L-plate 28 located in groove B23 releases the reset restriction on ring B31; under the reset action of the spring C36, the ring B31 drives the push rods A32, the push rods B35 and the pressure plate 34 to reset instantly, the limit block B33 resets along with the push rod A32, and the push rod A32 exits from the space occupied by the sharp-angled end of the limit block A19 in the initial state extruded by the push rod A32 in the limit groove 24; then the force on the L-plate 28 is removed, and the L-plate 28 is momentarily restored by the restoring action of the spring B29. Because the push rod A32 exits the space occupied by the sharp-angled end of the limit block A19 in the initial state extruded by the push rod A32 in the limit groove 24, the limit block A19 aligned with the notch of the limit groove 24 instantly enters the corresponding limit groove 24 under the reset action of the spring A21 to complete the rotation limitation of the shaft sleeve 16, further complete the rotation limitation of the winding roller 4 and avoid the random release of the transition cables wound on the winding roller 4 under the action of external force. When the stopper a19 is not aligned with the notch of the stopper groove 24, the winding roller 4 is manually turned down slightly so that the stopper a19 is aligned with the notch of the corresponding stopper groove 24 and inserted.

In conclusion, the beneficial effects of the invention are as follows: the electric drive module 54 is operated to drive the winding roller 4 to wind and recover the transition cable with one end fixed on the winding roller, the winding efficiency of the cable is high, the cable is recovered normally, the cable twisting phenomenon in the cable recovery process in the traditional manual mode is avoided, and the service life of the cable is prolonged to a certain extent. When the transition cable wound on the transition cable releasing device is released, the cable is regularly wound on the winding roller 4, so that dead knots caused by disordered winding of the cable are avoided, and the releasing efficiency of the cable is high; and the resistance when the transition cable is released is small, and the paying-off is easy and free and the efficiency is high. After the transition cable is placed near the target electrical equipment, the cable part is overhead, so that the trampling abrasion of workers moving nearby on the cable is avoided, and the service life of the cable is prolonged; meanwhile, the overhead transition cable cannot generate electric leakage due to friction damage with the ground, so that the personal safety of surrounding workers is protected; at this time, since the rotation of the winding roller 4 is locked by the stopper a19, the transition cable connected to the apparatus is prevented from being unlimitedly unwound from the winding roller 4 by an external force; after the transition cable after use is wound and recovered by the winding roller 4, the rotation of the winding roller 4 is locked again by the limiting block A19, the transition cable is prevented from being randomly released from the winding roller 4 under the action of external force, and the transition cable is effectively recovered and stored.

In addition, when the transition cable that is released and is in user state from winding roller 4 takes place to trip under the workman careless condition, be in unsettled transition cable and can stimulate winding roller 4 under the exogenic action and take place two to three circles of rotations, volute spiral spring 15 is compressed and the energy storage, the transition cable is continued to be released certain length by rotatory winding roller 4 and is in order to form the buffering to the external force that the transition cable received, avoid the transition cable to trip take place to drag the damage under the exogenic action that takes place to trip, the life of extension transition cable, and guarantee that the workman that takes place to trip with the transition cable can not be because of taking place not buffering to trip and fall with the cable, and then guarantee staff's activity safety. Meanwhile, the suspended transition cable can pull the winding roller 4 to rotate for two to three circles under the action of external force, so that the phenomenon that the transition cable is pulled down under the condition of large external force is avoided to a certain extent, the stability of the equipment is ensured, the suspension of the transition cable in a use state is continuously kept, and the normal use of the equipment is not influenced.

Claims

1. An electrical wiring device for use on a worksite, comprising: the device comprises a base, supports, a winding roller, a belt wheel A, a volute spiral spring, a shaft sleeve, a ring A, a synchronous belt, a belt wheel B, a shaft B, a clamping block A, a damping ring, a ring C, a clamping block B, a sliding block, a spring D, a driving wheel, a clamping block C and an electric drive module, wherein the two supports are symmetrically arranged on the base with a moving device; one end of a winding roller for winding the cable is rotationally matched with the bracket on the same side, and the other end of the winding roller is rotationally matched with a ring A arranged at the top end of the bracket on the same side; the winding roller is fixedly provided with a belt wheel A, and the belt wheel A is connected with a shaft sleeve rotating on the winding roller through a volute spiral spring; the belt wheel A and the shaft sleeve are both positioned on the inner side of the ring A, and the shaft sleeve is positioned between the belt wheel A and the ring A; the shaft sleeve and the ring A are provided with structures for manually limiting and manually releasing the limitation on the rotation of the shaft sleeve; when the rotation of the shaft sleeve is not limited, the belt wheel A drives the shaft sleeve to rotate through the volute spiral spring; when the rotation of the shaft sleeve is limited, the shaft sleeve limits the rotation of the belt wheel A through the volute spiral spring;

the shaft B is rotatably matched with a fixed seat A arranged on the base, and the shaft B is provided with a belt wheel B; the belt wheel B is in transmission connection with the belt wheel A through a synchronous belt; the ring C is arranged on the fixed seat A through a damping ring, and the ring C and the shaft B are the same as the central axis; a sliding block is arranged on the cylindrical surface of the ring C in a sliding groove D which runs through the outer cylindrical surface and the inner cylindrical surface of the ring C and slides along the radial direction of the ring C; one end of the sliding block, which is positioned at the inner cylindrical surface of the ring C, is matched with a clamping block A arranged on the shaft B, and the other end of the sliding block is provided with an inclined plane; a spring D for resetting the movement of the sliding block is arranged on the sliding block;

2. A wireline assembly for use at a worksite according to claim 1, further comprising: a stepped circular groove is formed in one end, which is positioned on the ring A in rotating fit, of the winding roller; a rotary round block is arranged at the tail end of the shaft A fixedly arranged on the bracket at the same side; the rotating round block and the tail end of the shaft A rotate in the stepped circular groove; four universal wheels with self-locking structures are symmetrically arranged at the bottom of the base.

3. A wireline assembly for use at a worksite according to claim 2, further comprising: and side baffles A and B are symmetrically arranged on two sides of the cable winding part on the winding roller.

4. A wire installation for use at a worksite according to claim 1, or claim 2 or claim 3, wherein: the distance between the fixture block B and the slide block is smaller than the section width of the fixture block C.

5. A wireline assembly for use at a worksite according to claim 4, further comprising: a ring groove A is circumferentially formed on the inner wall of the round hole, which is rotatably matched with the winding roller, of the belt pulley A, and the ring groove A is communicated with the end face, opposite to the ring A, of the belt pulley A; the shaft sleeve part is positioned in the ring groove A; the scroll spring is nested on the shaft sleeve; one end of the volute spiral spring is connected with the shaft sleeve, and the other end of the volute spiral spring is connected with the inner wall of the annular groove A.

6. A wire installation for use at a worksite according to claim 1, or claim 2 or claim 3, wherein: a chute A is arranged on the end surface of the shaft sleeve opposite to the ring A; a limiting block A with a sharp angle at one end slides in the chute A along the direction parallel to the central axis of the winding roller; the sharp-angled end of the limiting block A is matched with a plurality of limiting grooves which are uniformly distributed on the end surface of the ring A in the circumferential direction around the central axis; a spring A for resetting the limiting block A is arranged in the chute A; two guide blocks are symmetrically arranged on two sides of the limiting block A, and the two guide blocks respectively slide in two guide grooves on the inner wall of the sliding groove A along the direction parallel to the central axis of the shaft sleeve; the inner wall of the ring A is circumferentially provided with a ring groove B around the central axis thereof, and the ring groove B is communicated with a plurality of limiting grooves; a plurality of sliding chutes B communicated with the ring groove B are uniformly arranged on the end surface of the ring A, which is not provided with the limiting groove, in the circumferential direction around the central axis of the ring A; the ring B is nested and slides in the ring groove B along the central axis direction of the winding roller, and one ends of a plurality of push rods A which are uniformly distributed on the end surface of the ring B in the circumferential direction respectively slide in the corresponding limit grooves; the push rods A are respectively matched with the sharp-angled ends of the limiting blocks A; the push rod A is provided with a limiting block B for limiting the sliding distance of the push rod A in the limiting groove; the pressing plate at one end of the winding roller is fixedly connected with the ring B through push rods B of sliding chutes B on the end surface of the transverse ring A; the outer cylindrical surface of the ring A is provided with a chute C communicated with the annular groove B, and the inner wall of the chute C is circumferentially provided with an annular groove C around the central axis of the chute B; the spring C positioned in the ring groove B is nested on the winding roller; one end of the spring C is connected with the ring B, and the other end of the spring C is connected with the inner wall of the ring groove B; an L-shaped plate with one end provided with an inclined plane slides in the chute C along the radial direction of the ring A; the inclined end of the L plate is matched with the ring B; the L plate is provided with a compression spring plate A, and the compression spring plate A is positioned in the ring groove C; the spring B positioned in the ring groove C is nested on the L plate, and the spring B is positioned between the pressure spring plate A and the outer cylindrical surface of the ring A; one end of the spring B is connected with the pressure spring plate A, and the other end of the spring B is connected with the inner wall of the ring groove C.

7. A wire installation for use at a worksite according to claim 1, or claim 2 or claim 3, wherein: the spring A, the spring B, the spring C and the spring D are compression springs; one end of the spring A is connected with the inner wall of the sliding groove A, and the other end of the spring A is connected with the end face of the limiting block A.

8. A wire installation for use at a worksite according to claim 1, or claim 2 or claim 3, wherein: a ring groove D is circumferentially formed on the inner wall of the sliding groove D; a compression spring plate B is nested on the sliding block and moves in the ring groove D along the radial direction of the ring C along with the sliding block; the spring D is nested on the sliding block and is positioned in the annular groove D; the spring D is positioned between the pressure spring plate B and the inner wall of the ring C; one end of the spring D is connected with the tension spring plate B, and the other end of the spring D is connected with the inner wall of the annular groove D.

9. A wire installation for use at a worksite according to claim 1, or claim 2 or claim 3, wherein: the base is provided with a fixed seat B, and the electric drive module is arranged on the fixed seat B through a fixed seat C; an output shaft of the electric drive module is in rotary fit with the fixed seat B; the driving wheel is arranged on an output shaft of the electric drive module; the end face of the ring A, which is opposite to the shaft sleeve, is a smooth face, and the end face of the push rod A is a smooth face.

10. A method for protecting a wire during threading, wherein a wire device for use at a construction site as claimed in any one of claims 1 to 9 is used, the method comprising the steps of:

in an initial state, a transition cable with a certain length is wound on the winding roller (4), and the fixed end of the transition cable is electrically connected with an electric socket arranged on the bracket (3); the spring (A21) is in a compressed state, so that when the limiting block (A19) enters the corresponding limiting groove (24) again after being separated from the initial corresponding limiting groove (24), the limiting block (A19) instantly enters the limiting groove (24) under the reset action of the further compressed spring (A21) to complete the rotation limitation of the shaft sleeve (16) and simultaneously complete the reset of the ring (B31) under the common action of the limiting block and the spring (C36);

in an initial state, the guide block (20) is positioned at one end of the limiting groove (24) close to the ring (A22), the sharp-angled end of the limiting block (A19) is positioned in the corresponding limiting groove (24) on the ring (A22) and is tightly attached to the tail end of the corresponding push rod (A32), and the limiting block (A19) and the limiting groove (24) are matched to limit the rotation of the shaft sleeve (16) relative to the winding roller (4); the tail ends of a plurality of push rods (A32) are respectively positioned in the corresponding limiting grooves (24); the distance between the limiting block (B33) and the side wall of the ring groove (B23) is equal to the length of the sharp-angled end of the limiting block (A19) in the limiting groove (24), so that when the tail end of the push rod (A32) is coplanar with the end face of the ring (A22), the limiting block (B33) just contacts with the inner wall of the ring groove (B23) and limits the push rod (A32) to continue moving, and the phenomenon that the tail end of the push rod (A32) forms a barrier to the rotation of the shaft sleeve (16) relative to the winding roller (4) due to the fact that the end face of the ring (A22) protrudes; the distance between the pressure plate (34) and the end face of one end of the winding roller (4) is greater than the length of the sharp-angle end of the limiting block (A19) in the limiting groove (24), so that the pressed pressure plate (34) can drive the push rod (A32) to complete the process that the sharp-angle end of the limiting block (A19) in the limiting groove (24) is just separated from the corresponding limiting groove (24) through a plurality of push rods (B35) and a ring (B31);

in an initial state, one end of the sliding block (47) positioned at the inner cylindrical surface of the ring (C43) is just positioned in the sliding groove (D44), the circle center of the tail end of the clamping block (A40) is positioned on the central axis of the shaft (B39), the circle radius of the circle center of the tail end of the clamping block (A40) is slightly smaller than the section circle radius of the inner cylindrical surface of the ring (C43), and the smallest circle radius of the circle center of the inclined plane end of the sliding block (47) on the central axis of the shaft (B39) is larger than the circle radius of the tail end of the inclined plane end of the clamping block (C389;

when the power socket needs to be extended to the electric equipment needing power on the site through a transition cable, firstly, the electric wire device is pushed to the position close to the nearest power supply, four universal wheels (2) at the bottom of the base (1) are locked, and the power socket on the bracket (3) is electrically connected with the power supply;

then pressing a pressure plate (34) which is away from the end face of the winding roller (4) by a certain distance along the central axis direction of the winding roller (4), wherein the pressure plate (34) drives a ring (B31) in a ring groove (B23) to synchronously move relative to the winding roller (4) through a plurality of push rods (B35), and the ring (B31) drives a plurality of push rods (A32) to synchronously move; the push rod (A32) which is the same as the limit block (A19) and the limit groove (24) pushes the limit block (A19) to be quickly separated from the corresponding limit groove (24); when the sharp-angled end of the limit block (A19) is completely and just separated from the corresponding limit groove (24), the limit block (B33) arranged on the push rod (A32) just meets the side wall of the ring groove (B23) and prevents the push rod (A32) from moving continuously; at the moment, the end face of the tail end of the push rod (A32) is coplanar with the end face of the ring (A22), the spring (A21) is further compressed and stored with energy, the ring (B31) just passes over the inclined end of the L plate (28), the L plate (28) limits the ring (B31), the spring (C36) is compressed and stored with energy, and the limit block (A19) releases the rotation limit of the shaft sleeve (16) relative to the ring (A22); during the process that the ring (B31) passes over the inclined plane end of the L plate (28), the ring (B31) acts on the inclined plane of the inclined plane end of the L plate (28) to enable the L plate (28) to move outwards in the radial direction of the ring (A22); the L plate (28) gradually compresses the spring (B29) through the compression spring plate (A30) and enables the spring (B29) to store energy; when the ring (B31) crosses the L plate (28), the compression amount of the spring (B29) reaches the maximum, under the reset action of the spring (B29), the L plate (28) is reset instantly and limits the reset of the ring (B31), so that the ring (B31) drives a plurality of push rods (A32) to fill and level up a plurality of limiting grooves (24) on the ring (A22), and when the shaft sleeve (16) drives the limiting block (A19) to rotate relative to the ring (A22), the end face of the ring (A22) in contact with the sharp-corner end section of the limiting block (A19) is always kept flat without hindering the rotation of the limiting block (A19);

then, pulling the free end of the transition cable wound on the winding roller (4) to move to the target electrical equipment, and driving the winding roller (4) to rotate by the transition cable; the winding roller (4) drives the side block (A8), the side block (B12) and the belt wheel (A13) which are arranged on the winding roller to synchronously rotate; the belt wheel (A13) drives the shaft sleeve (16) to rotate relative to the ring (A22) through the spiral spring (15); the shaft sleeve (16) drives the limiting block (A19) to circumferentially slide around the central axis of the winding roller (4) relative to the end face of the ring (A22); because the end surface of the ring (A22) and the end surface of the push rod (A32) are smooth surfaces, the rotation of the shaft sleeve (16) is not resisted, and the scroll spring (15) is not deformed; meanwhile, the belt wheel (A13) drives the belt wheel (B38) to rotate through a synchronous belt (37), and the belt wheel (B38) drives the shaft (B39) to rotate; at the moment, the clamping block (A40) and the sliding block (47) do not interfere with each other, and the rotation of the shaft (B39) is not hindered, so that the transition cable is pulled and released with less labor;

stopping pulling the transition cable when the free end of the transition cable reaches the target electrical device; at the moment, the L plate (28) is pulled outwards manually, the spring (B29) is compressed by the L plate (28) through the tension spring plate (A), and the spring (B29) stores energy at the same time, the inclined plane end in the annular groove (B23) on the L plate (28) releases the reset limitation on the ring (B31), under the reset action of the spring (C36), the ring (B31) drives a plurality of push rods (A32), a plurality of push rods (B35) and the pressure plate (34) to reset instantly, the limiting block (B33) resets along with the push rods (A32), and the push rods (A32) exit the space occupied by the sharp angle end of the limiting block (A19) in the initial state occupied by the pushing rods (A32) in the limiting groove (24); then the acting force acting on the L plate (28) is removed, and the L plate (28) is reset instantly under the reset action of the spring (B29);

in the resetting process of the push rod (A32), if the sharp-angled end of the limit block (A19) is just opposite to the notch of the corresponding limit groove (24) or the sharp-angled end of the limit block (A19) is positioned in the notch range of the corresponding limit groove (24), the limit block (A19) enters the corresponding limit groove (24) under the resetting action of the spring (A21) to complete the rotation limitation of the shaft sleeve (16) when the push rod (A32) is reset instantly; if the sharp-angled end of the limiting block (A19) is in contact with the end face of the ring (A22), after the push rod (A32) and the L plate (28) are completely reset, the transition cable is continuously pulled slowly and slightly, so that the limiting block (A19) continuously rotates relative to the ring (B31) and enters the corresponding limiting groove (24), and under the reset action of the spring (A21), the sharp-angled end of the limiting block (A19) instantly enters the corresponding limiting groove (24) and completes the rotation limitation of the shaft sleeve (16), so that the transition cable on the winding roller (4) is prevented from being continuously released under the action of external force;

when the transition cable which is released from the winding roller (4) and is in a use state is stumbled by a worker under the condition of inattention, the suspended transition cable can pull the winding roller (4) to rotate for two to three circles under the action of external force, the volute spiral spring (15) is compressed and stores energy, the transition cable is continuously released by the rotating winding roller (4) for a certain length to buffer the external force applied to the transition cable, the pulling damage of the transition cable under the action of the stumbling external force is avoided, the service life of the transition cable is prolonged, the worker stumbled with the transition cable can not fall down due to the unbuffered stumbling with the cable, and the activity safety of the worker is further ensured; when workers are separated from the transition cable, the winding roller (4) recovers the transition cable with a certain length which is released out again under the reset of the volute spiral spring (15), and the transition cable is ensured to be still in a suspended state;

when the use of the delivered transition cable is finished, the electrical connection with the electrical equipment is disconnected; then pressing a pressure plate (34) which is away from the end face of the winding roller (4) by a certain distance along the central axis direction of the winding roller (4), wherein the pressure plate (34) drives a ring (B31) in a ring groove (B23) to synchronously move relative to the winding roller (4) through a plurality of push rods (B35), and the ring (B31) drives a plurality of push rods (A32) to synchronously move; the push rod (A32) which is the same as the limit block (A19) and the limit groove (24) pushes the limit block (A19) to be quickly separated from the corresponding limit groove (24); when the sharp-angled end of the limit block (A19) is completely and just separated from the corresponding limit groove (24), the limit block (B33) arranged on the push rod (A32) just meets the side wall of the ring groove (B23) and prevents the push rod (A32) from moving continuously; at the moment, the end face of the tail end of the push rod (A32) is coplanar with the end face of the ring (A22), the spring (A21) is further compressed and stored with energy, the ring (B31) just passes over the inclined end of the L plate (28), the L plate (28) limits the ring (B31), the spring (C36) is compressed and stored with energy, and the limit block (A19) releases the rotation limit of the shaft sleeve (16) relative to the winding roller (4); then starting the electric drive module (54) to operate; the electric drive module (54) drives the driving wheel (50) to rotate; the inclined plane of a clamping block (C52) on the inner wall of a circular groove (51) on the driving wheel (50) is in quick contact with and interacts with the inclined plane of the inclined plane end of the sliding block (47), and the sliding block (47) drives the ring (C43) to rotate; due to the existence of the damping ring (42), the rotation of the ring (C43) is hindered to a certain degree, so that the rotation speed of the fixture block (C52) is greater than that of the slide block (47); the clamping block (C52) drives the sliding block (47) to move towards the central axis direction of the shaft (B39) along the radial direction; one end of the sliding block (47) matched with the clamping block (A40) quickly slides out of the sliding groove (D44) in the ring (C43), so that the circle center of the tail end of one end, matched with the clamping block (A40), of the sliding block (47) is smaller than the circle radius of the circle center of the tail end of the clamping block (A40) on the central axis of the shaft (B39) and is located on the central axis of the shaft (B39), and the spring (D49) is compressed and stores energy; when the fixture block (C52) meets the fixture block (B46) on the outer cylindrical surface of the ring (C43), the inclined surface of the inclined surface end of the fixture block (A40) is still in contact with the inclined surface of the inclined surface end of the slider (47), and the driving wheel (50) drives the ring (C43) to synchronously rotate relative to the shaft (B39) by overcoming the damping of the damping ring (42) through the fixture block (C52) and the fixture block (B46); when one end of the sliding block (47) matched with the clamping block (A40) meets the clamping block (A40), the ring (C43) drives the shaft (B39) to rotate reversely through the sliding block (47) and the clamping block (A40); in the process that the fixture block (C52) acts on the slider (47), if one end of the slider (47) abuts against the end face of the fixture block (A40), the fixture block (A40) drives the ring (C43) to rotate through the slider (47), and meanwhile the ring (C43) drives the slider (47) and the fixture block (A40) to generate staggered friction; after the slide block (47) is completely staggered with the clamping block (A40), the rotating speed of the ring (C43) is less than that of the driving wheel (50) due to the damping action of the damping ring (42); the clamping block (C52) further pushes the slide block (47) to move continuously towards the central axis direction of the shaft (B39) along the radial direction; the circle radius of the circle center of the tail end of one end, matched with the clamping block (A40), of the sliding block (47) on the central axis of the shaft (B39) is smaller than the circle radius of the circle center of the tail end of the clamping block (A40) on the central axis of the shaft (B39), and the spring (D49) is compressed and stores energy; when the fixture block (C52) meets the fixture block (B46) on the outer cylindrical surface of the ring (C43), the inclined surface of the inclined surface end of the fixture block (A40) is still in contact with the inclined surface of the inclined surface end of the slider (47), and the driving wheel (50) drives the ring (C43) to synchronously rotate relative to the shaft (B39) by overcoming the damping of the damping ring (42) through the fixture block (C52) and the fixture block (B46); when one end of the sliding block (47) matched with the clamping block (A40) meets the clamping block (A40), the ring (C43) drives the shaft (B39) to rotate reversely through the sliding block (47) and the clamping block (A40);

the reversely rotating shaft (B39) drives the belt wheel (B38) to rotate synchronously, and the belt wheel (B38) drives the belt wheel (A13) to rotate reversely through the synchronous belt (37); the belt wheel (A13) drives the winding roller (4) to rotate reversely, and the winding roller (4) winds the transition cable; meanwhile, the belt wheel (A13) drives the shaft sleeve (16) to rotate reversely through the volute spiral spring (15), and the shaft sleeve (16) drives the sharp-angled end of the limiting block (A19) to circumferentially slide around the central axis of the winding roller (4) relative to the end face of the ring (A22);

when the transition wire which is originally unwound is rewound on the winding roller (4), the operation of the electric drive module (54) is stopped and the drive wheel (50) stops rotating; under the reset action of the spring (D49), the rotation of the driving wheel (50) is limited due to the existence of the self-locking motor in the electric drive module (54); at the moment, under the action of the inclined plane end of the static clamping block (C52), the sliding block (47) drives the ring (C43) and the clamping block (A40) to continuously rotate reversely by a tiny angle, and the clamping block (A40) drives the winding roller (4) to continuously rotate reversely by a tiny angle through a series of transmission; in the process, the slide block (47) is gradually separated from the clamping block (C52), and under the reset action of the spring (D49), the slide block (47) is quickly reset and is quickly separated from the clamping block (A40); when the inclined plane end of the slide block (47) is just separated from the inclined plane end of the clamping block (C52), the slide block (47) is just reset relative to the ring (C43), and the slide block (47) is completely separated from the clamping block (A40) and does not generate mutual interference any more; the ring (C43) stops rotating under the damping action of the damping ring (42); under the action of friction force, the winding roller (4) stops rotating;

at the moment, the L plate (28) is pulled outwards manually, the L plate (28) compresses the spring (B29) through the tension spring plate (A) and simultaneously stores energy in the spring (B29), and the inclined plane end of the L plate (28) positioned in the ring groove (B23) releases the reset limitation of the ring (B31); under the reset action of the spring (C36), the ring (B31) drives the push rods (A32), the push rods (B35) and the pressure plate (34) to reset instantly, the limit block (B33) resets along with the push rods (A32), and the push rods (A32) exit from the space occupied by the sharp corner end of the limit block (A19) in the initial state extruded by the push rods (A32) in the limit groove (24); then the acting force acting on the L plate (28) is removed, and the L plate (28) is reset instantly under the reset action of the spring (B29); because the push rod (A32) exits the space occupied by the sharp-angled end of the limit block (A19) in the initial state extruded by the push rod in the limit groove (24), the limit block (A19) aligned with the notch of the limit groove (24) instantly enters the corresponding limit groove (24) under the reset action of the spring (A21) to complete the rotation limitation of the shaft sleeve (16), further complete the rotation limitation of the winding roller (4), and prevent the transition cable wound on the winding roller (4) from being randomly released under the action of external force; when the limiting block (A19) is not aligned with the notch of the limiting groove (24), the winding roller (4) is manually slightly rotated, so that the limiting block (A19) is aligned with the notch of the corresponding limiting groove (24) and inserted.