Automatic pulley for preventing double split conductors from being obstructed

Abstract

The invention belongs to the field of electric power facility maintenance equipment, and particularly relates to an automatic pulley capable of passing through a barrier of double split conductors, which comprises a support, a pulley, a pulley block, a pulley block and a pulley block, and is characterized in that the support comprises four vertical rods which are symmetrically arranged; the number of the walking assemblies is four, the walking assemblies are arranged above the vertical rods, each walking assembly comprises a cross-shaped rod, L-shaped plates are fixed to the four ends of each cross-shaped rod, U-shaped grooves are formed between the L-shaped plates and the cross-shaped rods, rolling wheels are arranged in the U-shaped grooves, and center shafts are fixed to the sides, away from the cross-shaped rods, of the rolling wheels; and a first belt wheel is arranged on the central shaft. Obstacle crossing is achieved in the mode that the cross-shaped rod drives the rolling wheels to turn over, through the height compensation assembly, in the obstacle crossing process, the fluctuation degree of the support is reduced, support jolt is relieved, and the extending length of the electric push rod is flexibly changed by detecting the sag angle of the bearing cable through the total station; the friction force between the roller and the load-bearing cable is flexibly changed according to the sag angle of the load-bearing cable.

Description

Technical Field

[0001] The invention belongs to the field of power facility maintenance equipment, and in particular relates to an automatic pulley for passing through obstacles of double split conductors. Background Art

[0002] With the rapid development of society, people have higher and higher requirements for power supply reliability, and live working is one of the important means to improve reliability. The pulley is a live working tool commonly used in the process of equipotential working. When dealing with broken conductors, conductor adhesion, foreign objects in the conductor, and installing or replacing spacers and shock-proof hammers and other maintenance work, it is necessary to cooperate with the pulley to implement potential operations. In recent years, due to the rapid development of power grids, the span of some 220kV lines across rivers, railways, and roads has gradually increased, and the height difference between adjacent towers has increased, resulting in increased line sag, making it impossible to complete the spacer adjustment of the line and conductor repair operations normally.

[0003] The existing publication number CN114243554B discloses a wire flying car, including at least two groups of roller mechanisms connected to the top of a bracket, the bracket includes an upper frame and a lower frame, the upper frame is in an inverted triangle, the two bottom corners of the upper frame are respectively connected to the roller mechanisms, the top corner is connected to a conveyor belt through a driving tower wheel, the conveyor belt is connected to the roller mechanism, the roller mechanism includes at least three groups of rollers evenly arranged along the circumferential direction of the upper wheel; the driving tower wheel rotates to drive the two groups of roller mechanisms to move synchronously along the wire direction through the conveyor belt, so that the roller mechanism swings along the wire direction with the axis of one group of rollers as the center of the circle to achieve obstacle crossing, the driving tower wheel and the conveyor belt on the bracket are used to drive the two groups of roller mechanisms to move synchronously, and the rollers in the roller mechanism close to the obstacle rotate, so that the two groups of roller mechanisms swing in the direction of the wire flying car movement to achieve obstacle crossing.

[0004] The existing device also has the following deficiencies: 1. When the existing device crosses an obstacle, the center of gravity height of the roller mechanism changes continuously. When crossing the obstacle, the bracket fluctuates greatly. The staff on the bracket will feel obvious bumps, which will cause discomfort to the staff. In addition, the large-scale bumps also pose a high safety hazard.

[0005] 2. The friction between the roller and the load-bearing cable of the existing device cannot be adjusted. The load-bearing cable is not in a horizontal state but has a certain sag. When the pulley slides downward on the load-bearing cable, if the friction between the roller and the load-bearing cable is large, the wear of the roller will be aggravated and the service life of the roller will be affected. When the pulley slides upward on the load-bearing cable, if the friction between the roller and the load-bearing cable is small, the roller will be difficult to slide normally. Summary of the invention

[0006] The object of the present invention is to provide an automatic pulley for passing through double split conductor obstacles in view of the problems raised in the above background technology.

[0007] To achieve the above object, the present invention adopts the following technical solution: an automatic pulley for passing through a double split conductor obstacle, comprising: A bracket, the bracket comprising four symmetrically arranged vertical rods; A walking assembly, which has four groups and is arranged above the vertical rod. The walking assembly includes a cross-shaped rod, and L-shaped plates are fixed to the four ends of the cross-shaped rod. A U-shaped groove is formed between the L-shaped plate and the cross-shaped rod. A roller is arranged in the U-shaped groove. A central axis is fixed to the side of the roller away from the cross-shaped rod. A first pulley is arranged on the central axis. The four first pulleys are connected through a first belt transmission. A motor is arranged at the center of the cross-shaped rod, and the motor is connected to one of the central axes through a second pulley and a second belt transmission.

[0008] Furthermore, a height compensation component is provided between the vertical rod and the cross rod, and the height compensation component includes a mounting plate fixed to the top of the vertical rod, a slide groove is provided at the upper end of the mounting plate, a movable block is slidably connected in the slide groove, and the movable block is rotatably connected to a first rotating shaft and a second rotating shaft, a first column gear is provided on the first rotating shaft, a second column gear and a half gear are provided on the second rotating shaft, the second column gear is meshed with the first column gear, and one end of the first rotating shaft away from the first column gear is fixed to the cross rod, and the height compensation component also includes two first racks fixed to the mounting plate, the two first racks are symmetrically arranged on both sides of the slide groove, and the first rack is meshed with the half gear.

[0009] Furthermore, the number of teeth on the first column gear is four times that on the second column gear, and a quarter turn of the first column gear drives the second column gear to rotate one turn, so that the movable block reciprocates up and down once under the cooperation of the half gear and the rack.

[0010] Furthermore, a cavity is provided inside the roller, a plurality of anti-skid grooves communicating with the cavity are provided on the peripheral side wall of the roller, anti-skid sheets are embedded in the anti-skid grooves, and a driving component for driving the anti-skid sheets to move is provided on the cross-shaped rod.

[0011] Further, the driving assembly includes a bearing seat fixed on the cross rod, the bearing seat is provided with a third rotating shaft, one end of the third rotating shaft extends into the cavity, an annular plate is fixed to the end of the third rotating shaft in the cavity, a plurality of cylindrical pins are provided on the annular plate and distributed in a circumferential array with the central axis of the annular plate as the center, a connecting rod is rotatably connected to the cylindrical pin, and the other end of the connecting rod is rotatably connected to the anti-slip sheet.

[0012] Furthermore, the drive assembly also includes an incomplete column gear fixed on the third rotating shaft, an electric push rod is fixed on the cross rod, the extension length of the electric push rod is controlled by a PLC controller, and the output end of the electric push rod is fixed with a second rack meshing with the incomplete column gear.

[0013] Furthermore, a total station is provided on the cross-shaped rod, and the total station is used to detect the sag angle of the load-bearing cable and transmit the data to the PLC controller, and the PLC controller controls the extension length of the electric push rod according to the received data.

[0014] Furthermore, the L-shaped plate is provided with an anti-slip assembly, which includes a sliding rod slidably connected to the L-shaped plate, a first spring is sleeved on the sliding rod, a conical limit block is fixed to one end of the sliding rod close to the roller, and a limit plate is fixed to the other end of the sliding rod.

[0015] Furthermore, a control component for limiting the rotation of the first rotating shaft is provided on the mounting plate, and the control component includes a U-shaped frame fixed on the mounting plate, a locking rod is slidably connected in the U-shaped frame, and the first rotating shaft is provided with four locking holes adapted to the locking rod and distributed in a circular array, a baffle is fixed on the locking rod, a second spring is sleeved on the locking rod between the baffle and the U-shaped frame, a handle is provided at the end of the sliding rod, and when the second spring is in a natural state, the locking rod is located in the locking hole.

[0016] Furthermore, a protective ring is fixed between the vertical rods via a connecting rod, a pedal rod is provided below the protective ring, the pedal rod is fixed on the vertical rod, and a protective rod is provided above the protective ring, the protective rod is fixed on the vertical rod.

[0017] Compared with the prior art, the advantages of the present invention are: 1. The present invention provides a traveling assembly and a control assembly. When the pulley is normally traveling on the load-bearing cable, the locking rod is located in the locking hole, the cross-shaped rod is in a locked state and cannot rotate, and the motor drives the four rollers to rotate synchronously, one of the rollers contacts and rolls with the load-bearing cable, so that the pulley can travel on the load-bearing cable; When it is necessary to overcome an obstacle, the staff will pull the locking rod near the obstacle out of the lock hole. At this time, the cross-shaped rod can rotate, and the motor at that location stops working to lock the roller at that location. As the pulley continues to move forward, the cross-shaped rod will flip 90° along the length of the load-bearing cable, allowing the roller to pass over the obstacle and switch to the next roller to contact the load-bearing cable. The roller can directly cross over the obstacle, achieving rapid obstacle crossing.

[0018] 2. The present invention sets a height compensation component. When crossing an obstacle, the cross-shaped rod drives the first rotating shaft to rotate a quarter of a circle. With the cooperation of the first column gear and the second column gear, the second rotating shaft rotates one circle. With the cooperation of the half gear and the rack, the movable block drives the cross-shaped rod to move back and forth upward and backward, thereby compensating for the height change of the cross-shaped rod when it rotates, reducing the ups and downs of the bracket, alleviating the discomfort caused to the staff by the bumping of the bracket, and reducing the safety hazards caused by the bumping.

[0019] 3. The present invention sets a total station and anti-skid grooves. When the total station detects that the bracket is in the sliding stage, it transmits data to the PLC controller. The PLC controller controls the electric push rod to retract, thereby reducing the friction between the roller and the load-bearing cable, reducing the wear of the roller and the load-bearing cable, and extending their service life. When the bracket is in the climbing stage, the PLC controller controls the electric push rod to extend, increasing the friction between the roller and the load-bearing cable to ensure the stability of the pulley when climbing and avoid roller slipping.

[0020] 4. In the present invention, since the load-bearing cable is in a sag state, the sag at both ends gradually increases compared to the middle angle. When climbing a slope, the sag angle is detected by a total station to flexibly change the extension length of the electric push rod to increase the friction between the roller and the load-bearing cable. The friction between the roller and the load-bearing cable is proportional to the climbing angle, that is, the friction between the roller and the load-bearing cable is flexibly changed according to the sag angle of the load-bearing cable, thereby avoiding the situation where normal climbing cannot be caused by insufficient friction and minimizing the wear between the wear roller and the load-bearing cable.

[0021] 5. The present invention provides an anti-slip assembly and clamps the load-bearing cable between the limit block and the roller through a conical limit block, thereby preventing the load-bearing cable from being detached from the roller due to bumps during obstacle crossing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an automatic pulley for passing through a double-split conductor obstacle provided by the present invention; Figure 2 It is a partial structural schematic diagram of a rear view of an automatic pulley for passing a double split conductor obstacle provided by the present invention; Figure 3 It is a schematic diagram of a partial structure of an automatic pulley for passing through an obstacle of double split conductors provided by the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 2 Enlarged view of point B in the middle; Figure 6 yes Figure 2 Enlarged view of point C in the middle; Figure 7It is a schematic diagram of the internal structure of a roller of an automatic pulley for passing through a double split conductor obstacle provided by the present invention; Figure 8 It is a schematic diagram of the structure of a walking assembly of an automatic pulley for passing a double-split conductor obstacle provided by the present invention; Fig. 9 The present invention is a schematic diagram of an automatic pulley for passing an obstacle with double split conductors.

[0023] In the figure, 1 is a bracket, 11 is a vertical rod, 12 is a connecting rod, 13 is a protective ring, 14 is a pedal rod, and 15 is a protective rod; 21 cross-shaped rod, 22 L-shaped plate, 23 U-shaped groove, 24 roller, 241 cavity, 242 anti-skid groove, 243 anti-skid sheet, 25 central axis, 26 first pulley, 27 first belt, 28 motor, 29 second pulley, 210 second belt, 211 total station; 31 mounting plate, 311 slide slot, 32 movable block, 33 first rotating shaft, 331 first column gear, 332 locking hole, 34 second rotating shaft, 341 second column gear, 342 half gear, 35 first rack; 41 sliding rod, 42 first spring, 43 conical limiting block, 44 limiting plate; 51 U-shaped frame, 52 locking rod, 521 baffle, 522 handle, 53 second spring; 61 bearing seat, 62 third rotating shaft, 621 annular plate, 622 cylindrical pin, 623 connecting rod, 63 incomplete column gear, 64 electric push rod, 641 second rack. DETAILED DESCRIPTION

[0024] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] like Figure 1-Figure 8 As shown, an automatic pulley for passing through a double split conductor obstacle comprises a bracket 1 and a walking assembly.

[0026] The bracket 1 includes four symmetrically arranged vertical rods 11, and a protective ring 13 is fixed between the vertical rods 11 through a connecting rod 12. The protective ring 13 provides enclosure protection for the staff to reduce the risk of falling. A pedal rod 14 is provided below the protective ring 13, and the pedal rod 14 is fixed on the vertical rod 11. A protective rod 15 is provided above the protective ring 13, and the protective rod 15 is fixed on the vertical rod 11; There are four groups of walking components and they are arranged above the vertical rod 11. The walking components include a cross-shaped rod 21. L-shaped plates 22 are fixed to the four ends of the cross-shaped rod 21. A U-shaped groove 23 is formed between the L-shaped plate 22 and the cross-shaped rod 21. A roller 24 is provided in the U-shaped groove 23. A central shaft 25 is fixed to the side of the roller 24 away from the cross-shaped rod 21. A first pulley 26 is provided on the central shaft 25. The four first pulleys 26 are connected by a first belt 27. A motor 28 is provided at the center of the cross-shaped rod 21. The motor 28 is connected to one of the central shafts 25 by a second pulley 29 and a second belt 210.

[0027] A height compensation component is provided between the vertical rod 11 and the cross rod 21, and the height compensation component includes a mounting plate 31 fixed to the top of the vertical rod 11, a slide groove 311 is provided at the upper end of the mounting plate 31, a movable block 32 is slidably connected in the slide groove 311, and the movable block 32 is rotatably connected to the first rotating shaft 33 and the second rotating shaft 34, a first column gear 331 is provided on the first rotating shaft 33, a second column gear 341 and a half gear 342 are provided on the second rotating shaft 34, the second column gear 341 is meshed with the first column gear 331, and one end of the first rotating shaft 33 away from the first column gear 331 is fixed on the cross rod 21, and the height compensation component also includes two first racks 35 fixed on the mounting plate 31, the two first racks 35 are symmetrically arranged on both sides of the slide groove 311, and the first rack 35 is meshed with the half gear 342.

[0028] The mounting plate 31 is provided with a control component for limiting the rotation of the first rotating shaft 33, and the control component includes a U-shaped frame 51 fixed on the mounting plate 31, and a locking rod 52 is slidably connected in the U-shaped frame 51. The first rotating shaft 33 is provided with four locking holes 332 adapted to the locking rod 52 and distributed in a circular array. When the locking rod 52 is located in the locking hole 332, the first rotating shaft 33 is locked so that the cross-shaped rod 21 cannot rotate. A baffle 521 is fixed to the locking rod 52, and a second spring 53 is sleeved on the locking rod 52 between the baffle 521 and the U-shaped frame 51. A handle 522 is provided at the end of the locking rod 52. When the second spring 53 is in a natural state, the locking rod 52 is located in the locking hole 332. During operation, the staff pulls the handle 522 by hand to pull the locking rod 52 out of the locking hole 332 to unlock the cross-shaped rod 21.

[0029] When the pulley is moving normally on the load-bearing cable, the locking rod 52 is located in the locking hole 332, the cross-shaped rod 21 is in a locked state and cannot rotate, and the motor 28 drives the four rollers 24 to rotate synchronously, and one of the rollers 24 contacts and rolls with the load-bearing cable, so that the pulley can move on the load-bearing cable; When it is necessary to overcome an obstacle, the staff will pull the locking rod 52 near the obstacle out of the locking hole 332. At this time, the cross-shaped rod 21 can rotate, and the motor 28 at that location stops working to lock the roller 24 at that location. As the pulley continues to move forward, since the roller 24 cannot rotate, the cross-shaped rod 21 will flip 90° along the length direction of the load-bearing cable and allow the roller to pass over the obstacle, switching to the next roller 24 to contact the load-bearing cable. At this time, the locking rod 52 is again inserted into the locking hole 332, and the roller 24 can directly pass over the obstacle to achieve rapid obstacle crossing.

[0030] The number of teeth of the first column gear 331 is four times that of the second column gear 341 . A quarter turn of the first column gear 331 drives the second column gear 341 to rotate one turn, so that the movable block 32 reciprocates up and down once with the cooperation of the half gear 342 and the rack 35 .

[0031] During the obstacle surmounting process, the cross-shaped rod 21 drives the first rotating shaft 33 to rotate a quarter of a turn, and the second rotating shaft 34 rotates one turn with the cooperation of the first column gear 331 and the second column gear 341. With the cooperation of the half gear 342 and the first rack 35, the movable block drives the cross-shaped rod 21 to move back and forth first downward and then upward, thereby compensating for the height change of the cross-shaped rod 21 during rotation, reducing the ups and downs of the bracket 1, alleviating the discomfort caused to the staff by the bumping of the bracket, and reducing the safety hazards caused by the bumping.

[0032] The roller 24 has a cavity 241 formed inside, and a plurality of anti-skid grooves 242 communicating with the cavity 241 are formed on the peripheral sidewall of the roller 24 . Anti-skid sheets 243 are embedded in the anti-skid grooves 242 . A driving assembly for driving the anti-skid sheets 243 to move is provided on the cross-shaped rod 21 .

[0033] The driving assembly includes a bearing seat 61 fixed on the cross rod 21, and a third rotating shaft 62 is provided on the bearing seat 61. One end of the third rotating shaft 62 extends into the cavity 241, and an annular plate 621 is fixed to one end of the third rotating shaft 62 in the cavity 241. The annular plate 621 is provided with a plurality of cylindrical pins 622 distributed in a circumferential array with the central axis of the annular plate 621 as the center, and a connecting rod 623 is rotatably connected to the cylindrical pin 622, and the other end of the connecting rod 623 is rotatably connected to the anti-slip sheet 243.

[0034] The driving assembly also includes an incomplete column gear 63 fixed on the third rotating shaft 62, an electric push rod 64 is fixed on the cross-shaped rod 21, the extension length of the electric push rod 64 is controlled by the PLC controller, and a second rack 641 meshing with the incomplete column gear is fixed at the output end of the electric push rod 64; When the electric push rod 64 is working, since the incomplete column gear 63 and the second rack 641 are meshed with each other, when the electric push rod 64 pushes the second rack 641 to move, it will drive the incomplete column gear 63 to rotate, and then drive the annular plate 621 to rotate, and push the anti-skid sheet 243 to move in the anti-skid groove 242 through the connecting rod 623, thereby controlling the length of the anti-skid sheet 243 extending out of the anti-skid groove 242.

[0035] A total station 211 is provided on the cross-shaped rod 21. The total station 211 is used to detect the sag angle of the load-bearing cable and transmit the data to the PLC controller. The PLC controller controls the extension length of the electric push rod 64 according to the received data. The total station 211 and the PLC controller are both existing technologies in this field.

[0036] Since the load-bearing cable is in a drooping arc state, the droop angles at both ends of the cable gradually increase compared to the middle angle. When the total station detects that the bracket is in the sliding stage, it transmits data to the PLC controller, and the PLC controller controls the electric push rod 64 to retract, thereby reducing the friction between the roller 24 and the load-bearing cable, reducing the wear of the roller 24 and the load-bearing cable, and extending their service life. When the bracket 1 is in the climbing stage, the PLC controller controls the electric push rod 64 to extend, increasing the friction between the roller 24 and the load-bearing cable, so as to ensure the stability of the pulley when climbing and avoid the roller slipping phenomenon; When climbing a slope, the sag angle is detected by the total station 211, and the extension length of the electric push rod 64 is flexibly changed to increase the friction between the roller 24 and the load-bearing cable. The friction between the roller 24 and the load-bearing cable is proportional to the climbing angle, that is, the friction between the roller and the load-bearing cable is flexibly changed according to the sag angle of the load-bearing cable to avoid the situation where normal climbing cannot be caused by insufficient friction, and the wear between the roller 24 and the load-bearing cable is reduced as much as possible.

[0037] An anti-slip assembly is provided on the L-shaped plate 22, and the anti-slip assembly includes a slide rod 41 slidably connected to the L-shaped plate 22, and a first spring 42 is sleeved on the slide rod 41. A conical limit block 43 is fixed to one end of the slide rod 41 close to the roller 24, and a limit plate 44 is fixed to the other end of the slide rod 41. The load-bearing cable is clamped between the limit block and the roller through the conical limit block to prevent the load-bearing cable from detaching from the roller due to bumps during obstacle traversal. It should be noted that the conical limit block 43 has a conical structure. When the roller is separated from the load-bearing cable, since the surface of the conical limit block 43 is a wedge-shaped surface, the load-bearing cable squeezes the conical limit block 43, so that the conical limit block 43 moves to the side away from the load-bearing cable, and will not block the separation of the load-bearing cable from the roller.

[0038] The working principle of the present invention is as follows: When the pulley is moving normally on the load-bearing cable, the locking rod 52 is located in the locking hole 332, the cross-shaped rod 21 is in a locked state and cannot rotate, and the motor 28 drives the four rollers to rotate synchronously, and one of the rollers 24 contacts and rolls with the load-bearing cable, so that the pulley can move on the load-bearing cable; When it is necessary to overcome an obstacle, the staff member pulls the locking rod 52 near the obstacle out of the locking hole 332. At this time, the cross-shaped rod 21 can rotate, and the motor 28 at this location stops working to lock the roller 24 at this location. When the pulley continues to move forward, since the roller 24 cannot rotate, the cross-shaped rod 21 will flip 90° along the length direction of the load-bearing cable and make the roller 24 pass over the obstacle, and switch to the next roller 24 to contact the load-bearing cable. The roller 24 can directly climb over the obstacle to achieve rapid obstacle crossing. At this time, the staff member releases the handle 522. Under the elastic force of the second spring 53, the locking rod 52 is again inserted into the locking hole 332 to complete the locking of the cross-shaped rod 21. At this time, the motor 28 resumes working, and the switched pulley 24 continues to move on the load-bearing cable. like Fig. 9 As shown in the figure, the arrow indicates the direction of movement of the device. The three state diagrams are schematic diagrams of the walking component before, during and after passing the obstacle from left to right. Before passing the obstacle, the Q wheel contacts the load-bearing cable to achieve walking. When passing the obstacle, the cross-shaped rod 21 rotates to achieve the obstacle. During this process, the Q wheel gradually separates from the load-bearing cable, and the P wheel gradually approaches the load-bearing cable. After passing the obstacle, the P wheel contacts the load-bearing cable to achieve walking. When crossing an obstacle, as the cross-shaped rod 21 rotates, the height of the cross-shaped rod 21 will continuously change from downward to upward. When the cross-shaped rod 21 rotates 45°, its height is the lowest. During the obstacle crossing process, the cross-shaped rod 21 drives the first rotating shaft 33 to rotate a quarter of a circle. Since the first column gear 331 and the second column gear 341 are meshed with each other, and the number of teeth of the first column gear 331 is four times the number of teeth of the second column gear 341, the first column gear 331 rotates a quarter of a circle to drive the second column gear 341 to rotate one circle, thereby driving the second rotating shaft 34 rotates one circle, and because the half gear 342 is meshed with the first rack 35, and the half gear 342 is alternately in contact and meshed with the two first racks 35 on both sides when rotating, when the second rotating shaft 34 drives the half gear 342 to rotate one circle, the movable block 32 will drive the cross-shaped rod 21 to move up and down first, and then to compensate for the height change of the cross-shaped rod 21 when rotating, reduce the fluctuation of the bracket 1, reduce the discomfort caused by the bumping of the bracket to the staff, and reduce the safety hazards caused by the bumping.

[0039] When the electric push rod 64 is working, since the incomplete column gear 63 and the second rack 641 are meshed with each other, when the electric push rod 64 pushes the second rack 641 to move, it will drive the incomplete column gear 63 to rotate, and then drive the annular plate 621 to rotate, and push the anti-skid sheet 243 to move in the anti-skid groove 242 through the connecting rod 623, so as to control the length of the anti-skid sheet 243 extending out of the anti-skid groove 242; Since the load-bearing cable is in a drooping arc state, the droop at both ends gradually increases compared to the middle angle. When the total station detects that the bracket 1 is in the sliding stage, it transmits the data to the PLC controller, and the PLC controller controls the electric push rod to retract, reducing the friction between the roller 24 and the load-bearing cable, reducing the wear of the roller 24 and the load-bearing cable, and extending their service life. When the bracket is in the climbing stage, the PLC controller controls the electric push rod 64 to extend, increasing the friction between the roller 24 and the load-bearing cable to ensure the stability of the pulley when climbing and avoid the roller 24 slipping. When climbing a slope, the sag angle is detected by the total station 211, and the extension length of the electric push rod 64 is flexibly changed to increase the friction between the roller 24 and the load-bearing cable. The friction between the roller 24 and the load-bearing cable is proportional to the climbing angle, that is, the friction between the roller and the load-bearing cable is flexibly changed according to the sag angle of the load-bearing cable to avoid the situation where normal climbing cannot be caused by insufficient friction.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic pulley for passing a double split conductor obstacle, characterized in that: include: A bracket (1), the bracket (1) comprising four symmetrically arranged vertical rods (11); A walking assembly, wherein the walking assembly has four groups and is arranged above the vertical rod (11), the walking assembly comprises a cross-shaped rod (21), L-shaped plates (22) are fixed to the four ends of the cross-shaped rod (21), a U-shaped groove (23) is formed between the L-shaped plate (22) and the cross-shaped rod (21), a roller (24) is arranged in the U-shaped groove (23), a central shaft (25) is fixed to the side of the roller (24) away from the cross-shaped rod (21), a first pulley (26) is arranged on the central shaft (25), the four first pulleys (26) are connected in transmission via a first belt (27), a motor (28) is arranged at the center of the cross-shaped rod (21), and the motor (28) is connected in transmission to one of the central shafts (25) via a second pulley (29) and a second belt (210).

2. The automatic pulley for passing a double split conductor obstacle according to claim 1, characterized in that: A height compensation component is provided between the vertical rod (11) and the cross-shaped rod (21), and the height compensation component comprises a mounting plate (31) fixed to the top of the vertical rod (11), a slide groove (311) is provided at the upper end of the mounting plate (31), a movable block (32) is slidably connected in the slide groove (311), and the movable block (32) is rotatably connected to a first rotating shaft (33) and a second rotating shaft (34), the first rotating shaft (33) is provided with a first column gear (331), and the second rotating shaft (34) is provided with a first column gear (331). A second column gear (341) and a half gear (342) are provided on the height compensation assembly, the second column gear (341) meshes with the first column gear (331), one end of the first rotating shaft (33) away from the first column gear (331) is fixed to the cross-shaped rod (21), and the height compensation assembly further comprises two first racks (35) fixed to the mounting plate (31), the two first racks (35) are symmetrically arranged on both sides of the slide groove (311), and the first racks (35) mesh with the half gear (342).

3. The automatic pulley for passing a double split conductor obstacle according to claim 2, characterized in that: The number of teeth of the first column gear (331) is four times the number of teeth of the second column gear (341); a quarter turn of the first column gear (331) drives the second column gear (341) to rotate one turn, thereby causing the movable block (32) to reciprocate up and down once under the cooperation of the half gear (342) and the first rack (35).

4. The automatic pulley for passing a double split conductor obstacle according to claim 1, characterized in that: A cavity (241) is provided inside the roller (24), a plurality of anti-skid grooves (242) communicating with the cavity (241) are provided on the peripheral side wall of the roller (24), an anti-skid sheet (243) is embedded in the anti-skid groove (242), and a driving component for driving the anti-skid sheet (243) to move is provided on the cross-shaped rod (21).

5. The automatic pulley for passing through a double split conductor obstacle according to claim 4, characterized in that: The driving assembly comprises a bearing seat (61) fixed on a cross-shaped rod (21); a third rotating shaft (62) is provided on the bearing seat (61); one end of the third rotating shaft (62) extends into the cavity (241); an annular plate (621) is fixed to one end of the third rotating shaft (62) in the cavity (241); a plurality of cylindrical pins (622) are provided on the annular plate (621) and are distributed in a circumferential array with the central axis of the annular plate (621) as the center; a connecting rod (623) is rotatably connected to the cylindrical pin (622); and the other end of the connecting rod (623) is rotatably connected to the anti-slip sheet (243).

6. The automatic pulley for passing through a double split conductor obstacle according to claim 5, characterized in that: The drive assembly further comprises an incomplete column gear (63) fixed on the third rotating shaft (62); an electric push rod (64) is fixed on the cross-shaped rod (21); the extension length of the electric push rod (64) is controlled by a PLC controller; and a second rack (641) meshing with the incomplete column gear (63) is fixed at the output end of the electric push rod (64).

7. The automatic pulley for passing through a double split conductor obstacle according to claim 6, characterized in that: A total station (211) is provided on the cross-shaped rod (21), and the total station (211) is used to detect the sag angle of the load-bearing cable and transmit the data to the PLC controller, and the PLC controller controls the extension length of the electric push rod (64) according to the received data.

8. The automatic pulley for passing through a double split conductor obstacle according to claim 1, characterized in that: The L-shaped plate (22) is provided with an anti-slip assembly, the anti-slip assembly comprising a slide bar (41) slidably connected to the L-shaped plate (22), a first spring (42) being sleeved on the slide bar (41), a conical limit block (43) being fixed to one end of the slide bar (41) close to the roller (24), and a limit plate (44) being fixed to the other end of the slide bar (41).

9. The automatic pulley for passing a double split conductor obstacle according to claim 2, characterized in that: The mounting plate (31) is provided with a control assembly for limiting the rotation of the first rotating shaft (33), the control assembly comprising a U-shaped frame (51) fixed on the mounting plate (31), a locking rod (52) being slidably connected inside the U-shaped frame (51), the first rotating shaft (33) being provided with four locking holes (332) adapted to the locking rod (52) and distributed in a circumferential array, a baffle (521) being fixed on the locking rod (52), a second spring (53) being sleeved on the locking rod (52) between the baffle (521) and the U-shaped frame (51), a handle (522) being provided at the end of the locking rod (52), and when the second spring (53) is in a natural state, the locking rod (52) is located in the locking hole (332).

10. The automatic pulley for passing through a double split conductor obstacle according to claim 1, characterized in that: A protective ring (13) is fixed between the vertical rods (11) via a connecting rod (12); a pedal rod (14) is provided below the protective ring (13); the pedal rod (14) is fixed to the vertical rod (11); a protective rod (15) is provided above the protective ring (13); the protective rod (15) is fixed to the vertical rod (11).

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