An automatic pulley for crossing obstacles of double-circuit bundled conductors

Abstract

The present invention belongs to the field of power facility maintenance equipment, and in particular relates to an automatic pulley for crossing a double - root split conductor obstacle, comprising: a bracket, the bracket includes four symmetrically arranged vertical rods; a walking assembly, there are four groups of the walking assemblies and they are arranged above the vertical rods, the walking assembly includes a cross - shaped rod, L - shaped plates are fixed at 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 shaft is fixed on the side of the roller away from the cross - shaped rod, and a first pulley is arranged on the central shaft. The present invention realizes obstacle crossing by the way of driving the roller to flip through the cross - shaped rod. Through the height compensation assembly, during the obstacle - crossing process, the undulating degree of the bracket is reduced and the bump of the bracket is alleviated. By detecting the sag angle of the load - bearing cable with a total station, the extension length of the electric push rod is flexibly changed, and 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:

[0005] 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.

[0006] 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

[0007] 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.

[0008] To achieve the above object, the present invention adopts the following technical solutions: An automatic pulley for crossing double - root split conductors, comprising:

[0009] A bracket, the bracket includes four symmetrically arranged vertical rods;

[0010] A walking assembly, there are four groups of the walking assembly and they are arranged above the vertical rods. The walking assembly includes a cross - shaped rod. L - shaped plates are fixed at 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 shaft is fixed on the side of the roller far from the cross - shaped rod. A first belt pulley is arranged on the central shaft. The four first belt pulleys are connected by a first belt in a transmission manner. A motor is arranged at the center of the cross - shaped rod. The motor is connected to one of the central shafts by a second belt pulley and a second belt in a transmission manner.

[0011] Furthermore, a height compensation assembly is arranged between the vertical rod and the cross - shaped rod. The height compensation assembly includes a mounting plate fixed at the top of the vertical rod. A sliding groove is opened at the upper end of the mounting plate. A movable block is slidably connected in the sliding groove. The movable block is rotatably connected with a first rotating shaft and a second rotating shaft. A first cylindrical gear is arranged on the first rotating shaft. A second cylindrical gear and a half - gear are arranged on the second rotating shaft. The second cylindrical gear meshes with the first cylindrical gear. One end of the first rotating shaft far from the first cylindrical gear is fixed on the cross - shaped rod. The height compensation assembly further includes two first rack bars fixed on the mounting plate. The two first rack bars are symmetrically arranged on both sides of the sliding groove. The first rack bar meshes with the half - gear.

[0012] Furthermore, the number of teeth of the first cylindrical gear is four times that of the second cylindrical gear. When the first cylindrical gear rotates one - quarter of a turn, it drives the second cylindrical gear to rotate one turn. Thus, under the cooperation of the half - gear and the first rack bar, the movable block reciprocates up and down once.

[0013] Furthermore, a cavity is opened inside the roller. A plurality of anti - slip grooves communicating with the cavity are opened on the peripheral side wall of the roller. Anti - slip sheets are embedded in the anti - slip grooves. A driving assembly for driving the anti - slip sheets to move is arranged on the cross - shaped rod.

[0014] Furthermore, the driving assembly includes a bearing seat fixed on the cross - shaped rod. A third rotating shaft is arranged on the bearing seat. One end of the third rotating shaft extends into the cavity. An annular plate is fixed at the end of the third rotating shaft in the cavity. A plurality of cylindrical pins circumferentially arrayed with the central axis of the annular plate as the center are arranged on the annular plate. A connecting rod is rotatably connected to the cylindrical pin. The other end of the connecting rod is rotatably connected to the anti - slip sheet.

[0015] Further, the driving component further includes an incomplete column gear fixed on the third rotating shaft. An electric push rod is fixed on the cross-shaped rod. The extending length of the electric push rod is controlled by a PLC controller. The output end of the electric push rod is fixed with a second rack engaged with the incomplete column gear.

[0016] Further, a total station is provided on the cross-shaped rod. The total station 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 extending length of the electric push rod according to the received data.

[0017] Further, an anti-disengagement component is provided on the L-shaped plate. The anti-disengagement component includes a sliding rod slidably connected to the L-shaped plate. A first spring is sleeved on the sliding rod. A conical limiting block is fixed at one end of the sliding rod close to the roller, and a limiting plate is fixed at the other end of the sliding rod.

[0018] Further, a control component for restricting the rotation of the first rotating shaft is provided on the mounting plate. The control component includes a U-shaped frame fixed on the mounting plate. A locking rod is slidably connected inside the U-shaped frame. Four locking holes adapted to the locking rod and distributed in a circumferential array are formed on the first rotating shaft. 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. When the second spring is in a natural state, the locking rod is located in the locking hole.

[0019] Further, a protective circle is fixed between the vertical rods through a connecting rod. A stepping rod is provided below the protective circle. The stepping rod is fixed on the vertical rods. A protective rod is provided above the protective circle. The protective rod is fixed on the vertical rods.

[0020] Compared with the existing technology, the advantages of the present invention are as follows:

[0021] 1. By setting the traveling component and the control component, when the trolley travels normally on the load-bearing cable, at this time the locking rod is located in the locking hole, and the cross-shaped rod is in a locked state and cannot rotate. The motor drives the four rollers to rotate synchronously. One of the rollers contacts and rolls on the load-bearing cable, realizing the traveling of the trolley on the load-bearing cable.

[0022] When an obstacle needs to be crossed, the staff pulls out the locking rod near the obstacle out of the locking hole. At this time, the cross-shaped rod can rotate, and the motor at this place stops working and locks the roller at this place. During the continuous forward movement of the trolley, since the roller cannot rotate, the cross-shaped rod will flip 90° along the length direction of the load-bearing cable and make the roller cross the obstacle, switch to the next roller to contact the load-bearing cable, and the roller can directly cross the obstacle, realizing rapid obstacle crossing.

[0023] 2. By providing a height compensation component in the present invention, when overcoming an obstacle, the cross-shaped rod drives the first rotating shaft to rotate a quarter of a circle. Under the cooperation of the first column gear and the second column gear, the second rotating shaft rotates one circle. Under the cooperation of the half gear and the first rack, the movable block drives the cross-shaped rod to move up and down reciprocally once, compensating for the height change during the rotation of the cross-shaped rod, reducing the undulation degree of the bracket, alleviating the discomfort brought to the staff by the bumping of the bracket, and at the same time reducing the potential safety hazards caused by the bumping.

[0024] 3. By providing a total station and anti-slip grooves in the present invention, 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, 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 the phenomenon of the roller slipping.

[0025] 4. In the present invention, since the load-bearing cable is in a catenary state, the sag angles at both ends gradually increase compared with the middle part. When climbing, the total station detects the sag angle and flexibly changes 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, avoiding the situation where the normal climbing cannot be carried out due to insufficient friction, and minimizing the wear between the roller and the load-bearing cable as much as possible.

[0026] 5. By providing an anti-disengagement component in the present invention, the load-bearing cable is clamped between the conical limit block and the roller, avoiding the situation that the load-bearing cable disengages from the roller due to the bumping during obstacle crossing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall structural schematic diagram of an automatic pulley for crossing a double-conductor obstacle provided by the present invention;

[0028] Figure 2 is the rear-view partial structural schematic diagram of an automatic pulley for crossing a double-conductor obstacle provided by the present invention;

[0029] Figure 3 is the front-view partial structural schematic diagram of an automatic pulley for crossing a double-conductor obstacle provided by the present invention;

[0030] Figure 4 is Figure 3 the enlarged view at A in

[0031] Figure 5 is Figure 2 the enlarged view at B in

[0032] Figure 6 is Figure 2 The enlarged view at position C in

[0033] Figure 7 It is a schematic diagram of the internal structure of the roller of an automatic pulley for crossing the obstacle of double - root bundled conductors provided by the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the walking component of an automatic pulley for crossing the obstacle of double - root bundled conductors when crossing the obstacle provided by the present invention;

[0035] Figure 9 It is a schematic diagram of an automatic pulley for crossing the obstacle of double - root bundled conductors provided by the present invention when crossing the obstacle.

[0036] In the figure, 1 is the bracket, 11 is the vertical rod, 12 is the connecting rod, 13 is the protective ring, 14 is the stepping rod, 15 is the protective rod;

[0037] 21 is the cross - shaped rod, 22 is the L - shaped plate, 23 is the U - shaped groove, 24 is the roller, 241 is the cavity, 242 is the anti - slip groove, 243 is the anti - slip piece, 25 is the central axis, 26 is the first pulley, 27 is the first belt, 28 is the motor, 29 is the second pulley, 210 is the second belt, 211 is the total station;

[0038] 31 is the mounting plate, 311 is the chute, 32 is the movable block, 33 is the first rotating shaft, 331 is the first column gear, 332 is the lock hole, 34 is the second rotating shaft, 341 is the second column gear, 342 is the half - gear, 35 is the first rack;

[0039] 41 is the slide bar, 42 is the first spring, 43 is the conical limit block, 44 is the limit plate;

[0040] 51 is the U - shaped frame, 52 is the lock rod, 521 is the baffle, 522 is the handle, 53 is the second spring;

[0041] 61 is the bearing seat, 62 is the third rotating shaft, 621 is the annular plate, 622 is the cylindrical pin, 623 is the connecting rod, 63 is the incomplete column gear, 64 is the electric push rod, 641 is the second rack. Detailed implementation manners

[0042] The following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

[0043] As Figures 1 - 8 shown, an automatic pulley for crossing the obstacle of double - root bundled conductors includes a bracket 1 and a walking component.

[0044] 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;

[0045] 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.

[0046] 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.

[0047] 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.

[0048] When the pulley walks normally on the load-bearing cable, the locking rod 52 is located in the locking hole 332 at this time, and the cross-shaped rod 21 is in a locked state and cannot rotate. The motor 28 drives the four rollers 24 to rotate synchronously. One of the rollers 24 contacts and rolls on the load-bearing cable, realizing the walking of the pulley on the load-bearing cable;

[0049] When an obstacle needs to be crossed, the staff pulls out 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 position stops working and locks the roller 24 at this position. During the continuous forward movement of the pulley, 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 cross the obstacle. Then, it switches to the next roller 24 to contact the load-bearing cable. At this time, the locking rod 52 is inserted into the locking hole 332 again, and the roller 24 can directly cross the obstacle, realizing rapid obstacle crossing.

[0050] The number of teeth of the first column gear 331 is four times that of the second column gear 341. When the first column gear 331 rotates a quarter of a circle, it drives the second column gear 341 to rotate one circle. Thus, with the cooperation of the half gear 342 and the first rack 35, the movable block 32 reciprocates up and down once.

[0051] During the obstacle-crossing process, the cross-shaped rod 21 drives the first rotating shaft 33 to rotate a quarter of a circle. With the cooperation of the first column gear 331 and the second column gear 341, the second rotating shaft 34 rotates one circle. With the cooperation of the half gear 342 and the first rack 35, the movable block drives the cross-shaped rod 21 to move up and down reciprocally once, compensating for the height change when the cross-shaped rod 21 rotates, reducing the undulation degree of the bracket 1, alleviating the discomfort brought to the staff by the bump of the bracket, and at the same time reducing the safety hazards caused by the bump.

[0052] A cavity 241 is formed inside the roller 24. A plurality of anti-slip grooves 242 communicating with the cavity 241 are formed on the circumferential side wall of the roller 24. Anti-slip sheets 243 are embedded in the anti-slip grooves 242, and a driving component for driving the anti-slip sheets 243 to move is arranged on the cross-shaped rod 21.

[0053] The driving component includes a bearing seat 61 fixed on the cross-shaped rod 21. A third rotating shaft 62 is arranged on the bearing seat 61. One end of the third rotating shaft 62 extends into the cavity 241. An annular plate 621 is fixed at the end of the third rotating shaft 62 in the cavity 241. A plurality of cylindrical pins 622 are arranged on the annular plate 621 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.

[0054] The driving assembly further 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 extending length of the electric push rod 64 is controlled by a PLC controller. A second rack 641 meshing with the incomplete column gear is fixed on the output end of the electric push rod 64;

[0055] When the electric push rod 64 is working, since the incomplete column gear 63 and the second rack 641 mesh 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. The anti-slip piece 243 is pushed through the connecting rod 623 to move in the anti-slip groove 242, thereby realizing the control of the length of the anti-slip piece 243 extending out of the anti-slip groove 242.

[0056] 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 extending length of the electric push rod 64 according to the received data. Both the total station 211 and the PLC controller are prior arts in the field.

[0057] Since the load-bearing cable is in a sag arc state, the sag angles at both ends are gradually increasing compared with the middle part. When the total station detects that the bracket is in the sliding stage, it transmits the data to the PLC controller. The PLC controller controls the electric push rod 64 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 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 to ensure the stability of the trolley when climbing and avoid the phenomenon of roller slipping;

[0058] When climbing, the total station 211 is used to detect the sag angle and flexibly change the extending length of the electric push rod 64 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, avoiding the situation that normal climbing cannot be carried out due to insufficient friction, and minimizing the wear between the roller 24 and the load-bearing cable as much as possible.

[0059] An anti - detachment component is provided on the L - shaped plate 22. The anti - detachment component includes a slide bar 41 slidably connected to the L - shaped plate 22. A first spring 42 is sleeved on the slide bar 41. A conical limit block 43 is fixed at one end of the slide bar 41 close to the roller 24, and a limit plate 44 is fixed at the other end of the slide bar 41. The load - bearing cable is clamped between the limit block and the roller by the conical limit block, avoiding the situation that the load - bearing cable detaches from the roller due to the bumps during obstacle crossing. It should be noted that the conical limit block 43 is in 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 presses the conical limit block 43, causing the conical limit block 43 to move away from the load - bearing cable side and not blocking the separation of the load - bearing cable from the roller.

[0060] The working principle of the present invention is as follows:

[0061] When the trolley travels normally on the load - bearing cable, at this time, the locking rod 52 is located in the locking hole 332, and the cross - shaped rod 21 is in a locked state and cannot rotate. The motor 28 drives the four rollers to rotate synchronously. One of the rollers 24 contacts and rolls on the load - bearing cable, realizing the walking of the trolley on the load - bearing cable;

[0062] When it is necessary to cross an obstacle, the staff 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 position stops working and locks the roller 24 at this position. During the process of the trolley continuing 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 cross the obstacle. Then, it switches to the next roller 24 contacting the load - bearing cable. The roller 24 can directly cross the obstacle, realizing rapid obstacle crossing. At this time, the staff releases the handle 522. Under the elastic force of the second spring 53, the locking rod 52 is inserted into the locking hole 332 again, completing the locking of the cross - shaped rod 21. At this time, the motor 28 resumes working, and the switched - to roller 24 continues to walk on the load - bearing cable;

[0063] As Figure 9 shown, the arrow indicates the walking direction of the device. The three state diagrams are, from left to right, the schematic diagrams before, during, and after the walking component crosses the obstacle. Before crossing the obstacle, the Q - wheel contacts the load - bearing cable to realize walking. When crossing the obstacle, the cross - shaped rod 21 rotates to cross the obstacle. During this process, the Q - wheel gradually detaches from the load - bearing cable, and at the same time, the P - wheel gradually approaches the load - bearing cable. After crossing the obstacle, the P - wheel contacts the load - bearing cable to realize walking;

[0064] When overcoming obstacles, as the cross-shaped rod 21 rotates, the height of the cross-shaped rod 21 will change continuously, first decreasing and then increasing. When the cross-shaped rod 21 rotates 45°, its height is the lowest. During the obstacle-overcoming 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 that of the second column gear 341, the first column gear 331 rotating a quarter of a circle drives the second column gear 341 to rotate one circle, thereby driving the second rotating shaft 34 to rotate one circle. Also, because the half gear 342 is meshed with the first rack 35, and when the half gear 342 rotates, it alternately contacts and meshes with the two first racks 35 on both sides. 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 reciprocally once, compensating for the height change of the cross-shaped rod 21 during rotation, reducing the undulation degree of the bracket 1, alleviating the discomfort brought to the staff by the bump of the bracket, and at the same time reducing the safety hazards caused by the bump.

[0065] When the electric push rod 64 is working, since the incomplete column gear 63 is meshed with the second rack 641, when the electric push rod 64 pushes the second rack 641 to move, it will drive the incomplete column gear 63 to rotate, thereby driving the annular plate 621 to rotate, and pushing the anti-slip sheet 243 to move in the anti-slip groove 242 through the connecting rod 623, thereby realizing the control of the length of the anti-slip sheet 243 extending out of the anti-slip groove 242;

[0066] Since the load-bearing cable is in a catenary state, the sag angles at both ends gradually increase compared with the middle part. When the total station 211 detects that the bracket 1 is in the sliding stage, it transmits the data to the PLC controller. 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 phenomenon of the roller 24 slipping;

[0067] When climbing, the total station 211 detects the sag angle to flexibly change the extending length of the electric push rod 64 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 that the normal climbing cannot be carried out due to insufficient friction.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall 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), the motor (28) is connected in transmission to one of the central shafts (25) via a second pulley (29) and a second belt (210); 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), 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); 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).

2. The automatic pulley for passing a double split conductor obstacle according to claim 1, 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).

3. The automatic pulley for passing a double split conductor obstacle according to claim 2, 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).

4. The automatic pulley for passing through a double split conductor obstacle according to claim 3, 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).

5. The automatic pulley for passing through a double split conductor obstacle according to claim 4, 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.

6. The automatic pulley for passing 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).

7. The automatic pulley for passing through a double split conductor obstacle according to claim 1, 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).

8. 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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