CN118495419B - Power transmission line overhead working rope lifting device - Google Patents

Abstract

The application discloses a power transmission line overhead working rope lifting device, which comprises a lifting rope, a shell, a traction shaft, a compression assembly and a driving mechanism, wherein the lifting rope is arranged on the shell; the lifting rope is hung on the electric wire, and the shell can be used for riding; the traction shaft is rotatably arranged on the shell, and the compression assembly is arranged on the traction shaft and is matched with the traction shaft to form a traction groove for penetrating through the lifting rope; the driving mechanism is arranged on the shell and is respectively matched with the traction shaft and the compression assembly. The application has the beneficial effects that: the driving mechanism can carry out self-adaptive adjustment according to the weight of the load by driving the compression assembly to compress the lifting rope; and when slipping occurs, the pressing component changes in position through traction of the lifting rope so as to realize self-locking with the driving mechanism, so that the pressing component can continuously press the lifting rope, and the lifting rope and the traction shaft are locked by a brake so as to ensure the use safety of the whole device.

Description

Power transmission line overhead working rope lifting device

Technical Field

The application relates to the technical field of power equipment overhaul, in particular to a rope lifting device for overhead operation of a power transmission line.

Background

The power transmission lines play an important role in the power system, are responsible for transmitting the electric energy generated by the power station to each user, and have the advantages of wide coverage, high transmission efficiency, long-distance power supply, strong power supply persistence and the like.

However, the power transmission line is exposed in the natural environment for a long time and can be influenced by various factors, such as wind, rain, snow, hail and the like, so that the power transmission line can be broken down or damaged, and therefore, regular overhaul and maintenance are important measures for ensuring the normal operation of the power transmission line.

In general, the power transmission line with faults needs to be replaced and installed again; under the condition of the linear tower of the ultra-high voltage transmission line of 500kV and above, an operator is often required to climb downwards from a tower cross arm to the installation position of the transmission line along soft bodies to perform replacement work for the replacement and installation of the transmission line. However, the rope ladder main body is formed by ropes, the climbing difficulty is high, and an operator is required to climb to the position of the cross arm of the iron tower, so that the physical consumption of the operator is high, and the rope ladder main body is not suitable for replacing and installing a subsequent power transmission line. Based on the above, the application provides a lifting device capable of conveniently replacing and installing a power transmission line.

Disclosure of Invention

One of the objects of the present application is to provide a power transmission line overhead working rope lifting device that can solve at least one of the above-mentioned drawbacks of the related art.

In order to achieve at least one of the above objects, the present application adopts the following technical scheme: a power transmission line overhead working rope lifting device comprises a lifting rope, a shell, a traction shaft, a compression assembly and a driving mechanism; the lifting rope is hung on the electric wire, and the shell can be used for riding; the traction shaft is rotatably arranged on the shell, and the compression assembly is arranged on the traction shaft and is matched with the traction shaft to form a traction groove for penetrating through the lifting rope; the driving mechanism is arranged on the shell and is respectively matched with the traction shaft and the compression assembly; when ascending, the pressing component presses the lifting rope under the axial driving of the driving mechanism and is positioned at a first balance position, and then the traction shaft rolls and climbs along the pressed lifting rope under the driving of the rotation of the driving mechanism; when the lifting rope and the traction shaft slip, the pressing component is positioned at a second balance position under the traction of the lifting rope so as to be clamped with the driving mechanism, and the pressing component performs self-locking pressing on the lifting rope until the sliding is stopped.

Preferably, the driving mechanism comprises a rotating device, a driving sleeve and a locking assembly; the rotating device is fixedly arranged on the shell, the driving sleeve is in threaded fit with the traction shaft and is in transmission connection with the rotating device, and the locking component is movably sleeved on the traction shaft and is positioned between the driving sleeve and the compacting component; when the lifting is required, the driving sleeve is driven by the rotating device to spirally move along the traction shaft so as to push the locking assembly to compress the compressing assembly and the lifting rope and be positioned at a first balance position, and then the traction shaft and the driving sleeve synchronously rotate under the tightening force so as to perform rolling climbing along the lifting rope; when slipping occurs, the pressing component is suitable for being reset to a second balance position to be clamped with the locking component and drive the locking component to push the pressing component to perform self-locking pressing on the lifting rope.

Preferably, the driving mechanism further comprises a transmission member, the transmission member is rotatably mounted on the housing, the transmission member is in gear transmission fit with the driving sleeve, and the transmission member is in worm and gear transmission fit with the rotating device.

Preferably, the pressing assembly comprises a pair of pressing plates, a self-locking block and a guide plate; the pressing plates are movably sleeved on the traction shaft at intervals, pressing grooves corresponding to the outline of the lifting rope are formed in the end faces of the pressing plates, and the pressing grooves are suitable for being matched with the traction shaft to form the traction grooves; the guide plate is fixedly arranged on the shell and is close to the locking assembly, and the self-locking block is arranged on the pressure plate close to the locking assembly in a matched manner and is matched with the guide plate through a guide structure; when the pressing disc rotates to a first balance position around the traction shaft, the self-locking block synchronously rotates along with the pressing disc and gradually moves away from the locking assembly through the guide structure; when the pressing disc rotates to a second balance position around the traction shaft, the self-locking block synchronously rotates along with the pressing disc and approaches and is clamped with the locking assembly through the guide structure.

Preferably, an axially extending mounting block is arranged at the side part of the pressure plate, which is close to the locking assembly, and the self-locking block is penetratingly mounted on the mounting block, so that the self-locking block synchronously rotates along with the pressure plate; the locking assembly is circular, the self-locking block is arc-shaped, an arc-shaped guide groove is formed in the guide plate, the guide groove is eccentrically arranged with the locking assembly, and the self-locking block is in sliding fit with the guide groove to form the guide structure.

Preferably, the locking assembly is provided with a plurality of first helical teeth at equal intervals along the circumferential direction, and the inner side of the self-locking block is provided with a plurality of second helical teeth at equal intervals along the circumferential direction; when the self-locking block is clamped with the first helical teeth on the locking assembly through the second helical teeth, the locking assembly is pushed to move towards the direction close to the pressure plate.

Preferably, a tooth shaft section is arranged on the traction shaft, and two pressure plates are arranged on two sides of the tooth shaft section, so that the pressure plates are matched with the tooth shaft section through the pressure grooves to form the traction grooves; the gear shaft section is suitable for being matched with a groove formed by braiding a plurality of strands of lifting ropes through bevel gears; the pressing groove comprises a circumferential section with an arc section or an oblique line section and two opening sections arranged on the circumferential section at intervals along the circumferential direction, and the lifting rope is suitable for being pressed by the opening sections, penetrating through the traction groove and being pressed by the circumferential section in a wrapping and pressing mode to be close to the gear shaft section.

Preferably, the two opening sections of the pressing groove are arranged at 180 degrees along the circumferential direction of the circumferential section, and when the pressing assembly is at the second balance position, the included angle between the connecting line between the two opening sections and the vertical direction is smaller than a set threshold value; when the pressing assembly is in the first balance position, the included angle between the connecting line between the two opening sections and the vertical direction is larger than a set threshold value.

Preferably, the two pressure plates are a first pressure plate and a second pressure plate respectively, and the first pressure plate is suitable for performing rolling fit with the locking assembly in the circumferential direction through a ball or thrust bearing; an opening right opposite to the second pressure plate is formed in one side of the shell, and an end cover propped against the second pressure plate through a ball or thrust bearing is detachably arranged in the opening; and the traction groove is loosened and the hanging rope is installed through the disassembly of the end cover.

Preferably, a bearing assembly for riding is hung and installed at the lower part of the shell; the bearing assembly comprises a bearing frame for riding, and the bearing frame is hinged to the lower part of the shell.

Preferably, the bearing assembly further comprises a connecting plate and a spring; the connecting plate is elastically and slidably arranged at the lower part of the shell through the spring, and the bearing frame is hinged with the connecting plate.

Compared with the prior art, the application has the beneficial effects that:

The driving mechanism can carry out self-adaptive adjustment according to the weight of the load by driving the compression assembly to compress the lifting rope; and when slipping occurs, the pressing component changes in position through traction of the lifting rope so as to realize self-locking with the driving mechanism, so that the pressing component can continuously press the lifting rope, and the lifting rope and the traction shaft are locked by a brake so as to ensure the use safety of the whole device.

Drawings

Fig. 1 is a schematic view showing a state of being hung from an electric wire in the present invention.

Fig. 2 is a schematic view of the present invention in an exploded state.

Fig. 3 is an exploded view of the driving mechanism according to the present invention.

Fig. 4 is a schematic view showing an exploded state of the locking assembly according to the present invention.

Fig. 5 is a schematic structural view of the traction shaft in the present invention.

Fig. 6 is a schematic view showing an exploded state of the pressing assembly according to the present invention.

Fig. 7 is a schematic view of a partially sectioned structure in elevation of the present invention.

Fig. 8 is a schematic view of the traction shaft and the engagement of the compression assembly with the hoist rope when the present invention is in a self-locking or installed condition.

Fig. 9 is a schematic view showing the state of the traction shaft and the compression assembly and the lifting rope in the ascending state.

Fig. 10 is a schematic view showing the matching state of the locking assembly and the self-locking block when the invention is in the self-locking or mounting state.

FIG. 11 is a schematic view showing the engagement of the locking assembly with the self-locking block when the present invention is in the raised state.

Fig. 12 is a partially exploded view of the seating assembly of the present invention.

Fig. 13 is a schematic view of a partial cross-sectional structure of a seating assembly mounted to a housing in accordance with the present invention.

In the figure: the wire 100, the hoist rope 200, the housing 3, the bearing assembly 31, the connection plate 311, the guide rod 3110, the spring 312, the bearing frame 313, the end cap 32, the thrust bearing 33, the guide wheel 34, the driving mechanism 4, the rotating device 41, the worm shaft 410, the transmission member 42, the rotation shaft 421, the worm wheel 422, the main gear 423, the driving sleeve 43, the screw hole 430, the pinion 431, the push plate 432, the locking assembly 44, the locking wheel 441, the first raceway 4410, the first helical teeth 4411, the balls 442, the cover plate 443, the traction groove 500, the traction shaft 51, the thread section 511, the tooth shaft section 512, the pressing assembly 52, the pressing groove 520, the circumferential section 5201, the opening section 5202, the first pressing plate 521, the second raceway 5210, the mounting block 5211, the penetrating groove 5212, the second pressing plate 522, the self-locking block 523, the slider 5230, the second helical teeth 5231, the guide plate 524, and the guide groove 5240.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

One preferred embodiment of the present application, as shown in fig. 1 to 11, is a power transmission line overhead working rope lifting device, which comprises a lifting rope 200, a housing 3, a traction shaft 51, a pressing assembly 52 and a driving mechanism 4. The hoist rope 200 may be suspended from the wire 100, and the hoist rope 200 may extend along the wire 100 to the ground. The housing 3 is used for the standing or riding of the staff by means of a lower mounted carrier assembly 31 in order to provide a comfortable and easy to operate working position for the staff. The traction shaft 51 is rotatably mounted within the housing 3, and the compression assembly 52 is mounted to the traction shaft 51 and cooperatively forms a traction groove 500 for passing the hoist rope 200. The top and the bottom of the casing 3 are both provided with openings, and the lifting rope 200 can extend into the casing 3 along the opening at the top of the casing 3, and then extend out from the opening at the bottom of the casing 3 through the traction groove 500. The drive mechanism 4 is mounted to the housing 3 and cooperates with the traction shaft 51 and the compression assembly 52, respectively.

When the device of the present application needs to be lifted by carrying a worker, the worker sits stably on the carrying assembly 31. The pressing component 52 can press the lifting rope 200 under the axial driving of the driving mechanism 4 and is in the first balance position, at this time, the traction force generated by rolling friction between the lifting rope 200 and the traction shaft 51 meets the load requirement of the device, and the traction shaft 51 can roll and climb along the pressed lifting rope 200 under the driving of the rotation of the driving mechanism 4, so that the whole device can be driven to carry staff to ascend along the lifting rope 200. When slipping occurs between the lifting rope 200 and the traction shaft 51, that is, the force balance state of the pressing component 52 at the first balance position is broken, the pressing component 52 can be located at the second balance position under the traction of the lifting rope 200 to be clamped with the driving mechanism 4, and therefore the pressing component 52 can perform self-locking pressing on the lifting rope 200 through clamping force with the driving mechanism 4 until the lifting rope 200 and the traction shaft 51 are locked and braked to stop slipping.

It will be appreciated that the process of lifting the device with the personnel can be divided into two steps. The first step: after the hanging rope 200 is mounted with the traction groove 500, the traction shaft 51 is kept still under the friction force of the hanging rope 200, at this time, the driving mechanism 4 is not matched with the traction shaft 51 in the rotation direction, and the driving mechanism 4 can drive the pressing assembly 52 to drive the hanging rope 200 to press towards the traction shaft 51 until the hanging rope 200 is pressed and the pressing assembly 52 moves to the first balance position. And a second step of: the traction shaft 51 is in running fit with the driving mechanism 4 under the action of friction force, and therefore the traction shaft 51 can roll along the lifting rope 200 through rotation to drive the whole device to climb along the lifting rope 200. Based on the working process of the device, the driving mechanism 4 can adaptively adjust the compression of the compression assembly 52 to the lifting rope 200 according to the load weight of the device, so as to ensure the stable movement of the device. When slipping occurs, the pressing component 52 is clamped with the driving mechanism 4 through position change and drives the driving mechanism 4 to push the pressing component 52 in the direction of pressing the lifting rope 200, so that the pressing component 52 drives the lifting rope 200 to be pressed and self-locked with the traction shaft 51 to realize locking braking, and the use safety of the device can be effectively guaranteed.

It should be noted that there are two ways to raise and lower the whole device; the first way is that the traction shaft 51 winds and unwinds the lifting rope 200; the second way is that the length of the hoist rope 200 is constant and the traction shaft 51 drives the whole device along the hoist rope 200. Because the installation height of the electric wire 100 is relatively high at the time of electric power construction or maintenance, the length of the hoist rope 200 for lifting needs to be equal to the installation height of the electric wire 100, typically several tens of meters. If the first mode is adopted, the whole device may have a relatively large volume and a relatively heavy weight according to the winding degree of the lifting rope 200, and does not meet the use requirement of electric power construction, so the second mode is adopted for lifting the installation device in the embodiment.

Meanwhile, for the hanging of the hanging rope 200, the hanging rope 200 may be hung on the electric wire 100 by carrying the hanging rope 200 with an unmanned aerial vehicle, and a specific hanging process is a well-known technology of those skilled in the art, so that the detailed description thereof will not be provided herein. After the hanging rope 200 is hung, a worker may pass the lower end of the hanging rope 200 through the housing 3 and engage with the traction groove 500 at the ground surface. After the installation of the hoist rope 200 is completed, a worker can sit or stand on the bearing assembly 31 to drive the whole device and the worker to ascend along the hoist rope 200 by starting the driving mechanism 4 until reaching a set height to perform power construction operation.

It should also be appreciated that the lifting process of the present device is only dependent on a single lifting rope 200; of course, a plurality of suspension ropes 200 may also be suspended from the wire 100, with the suspension of the suspension ropes 200 being performed in the manner described above. Therefore, when the device is lifted along the corresponding lifting rope 200, the worker can be in auxiliary fit with the rest of the lifting ropes 200, so that balance can be maintained and construction safety can be improved by means of the rest of the lifting ropes 200 when electric power construction operation is performed.

In the present embodiment, the specific structure of the driving mechanism 4 is various, and for convenience of understanding, a detailed description will be given below by one of the structures. As shown in fig. 3 and 7, the driving mechanism 4 includes a rotating device 41, a driving sleeve 43, and a locking assembly 44. The rotating device 41 is fixedly arranged outside the shell 3 and extends the output end into the shell 3; the driving sleeve 43 is in threaded fit with the traction shaft 51 and is in transmission connection with the output end of the rotating device 41; the locking assembly 44 is movably sleeved on the traction shaft 51 and is positioned between the driving sleeve 43 and the pressing assembly 52.

When the device needs to be lifted by a worker, in a first step, the traction shaft 51 can be kept stationary under the friction force of the lifting rope 200 installed in the traction groove 500, and the driving sleeve 43 is driven by the rotating device 41 to move spirally along the traction shaft 51, so that the locking assembly 44 can be pushed to drive the pressing assembly 52 to press the lifting rope 200 to the traction shaft 51 and be in a first balance position. In the second step, since the compressing assembly 52 and the lifting rope 200 are in a compressed state, the axial movement of the compressing assembly 52 is limited, and the driving sleeve 43 cannot continue to move along the axial direction of the traction shaft 51, so that the traction shaft 51 and the driving sleeve 43 can rotate synchronously under the screw tightening force to perform rolling climbing along the lifting rope 200. When slippage occurs between the lifting rope 200 and the traction shaft 51, the pressing component 52 can reset and rotate to the second balance position under the balance action to be clamped with the locking component 44 and drive the locking component 44 to push the pressing component 52 to press the lifting rope 200.

It will be appreciated that axial movement of the drive sleeve 43 is achieved by threaded engagement with the traction shaft 51, so that the engagement of the compression assembly 52 with the drive sleeve 43 does not actively urge the drive sleeve 43 in a direction toward the compression assembly 52. In this embodiment, the locking assembly 44 is disposed, and the locking assembly 44 may be movably sleeved on the traction shaft 51, and the axial movement of the locking assembly 44 may be the pushing of the driving sleeve 43 or the pushing by the engagement with the pressing assembly 52. The locking assembly 44 is pushed by the driving sleeve 43 to compress the compressing assembly 52 and limit the axial movement of the driving sleeve 43 reversely. When the compressing assembly 52 and the locking assembly 44 are engaged to push the locking assembly 44 to move in a direction approaching to the compressing assembly 52, the compressing assembly 52 can drive the lifting rope 200 and the traction shaft 51 to compress and increase friction between the traction shaft 51 and the lifting rope 200, and the driving sleeve 43 can further move helically relative to the traction shaft 51 and abut against the locking assembly 44 under the driving of the rotating device 41, so that the locking assembly 44 can be further pushed to compress the compressing assembly 52 to realize double locking.

It should also be appreciated that the specific structure and operation of the rotating device 41 are well known to those skilled in the art, and that the rotating device 41 is typically provided with a motor, a rotating cylinder and a rotating hydraulic cylinder, and in this embodiment, the motor is preferably used for the rotating device 41. By mounting the rotation device 41 outside the housing 3, the volume of the housing 3 can be reduced to reduce the weight of the device, and the other can be used to balance the force of the carrier 31 and facilitate heat dissipation.

Specifically, as shown in fig. 3,5 and 7, a screw hole 430 is provided at the center of the driving sleeve 43, and a screw thread section 511 is provided on the traction shaft 51; the drive sleeve 43 is threadedly engaged with the threaded section 511 of the traction shaft 51 through the threaded bore 430. One end of the driving sleeve 43 is provided with a pinion 431, and the rotating device 41 can be meshed with the pinion 431 through a main gear 423 installed at an output end, so that the driving sleeve 43 can be driven to rotate spirally around the traction shaft 51 through the meshing of the main gear 423 and the pinion 431 when the rotating device 41 is started.

It should be noted that the position of the main gear 423 is unchanged, and the sub gear 431 will move axially with the driving sleeve 43, so that in order to ensure stable engagement between the main gear 423 and the sub gear 431, the broad band of the main gear 423 is larger than the width of the sub gear 431, or the broad band of the sub gear 431 is larger than the width of the main gear 423, so that during the axial movement of the driving sleeve 43, full-tooth-width engagement with a small tooth width between the main gear 423 and the sub gear 431 needs to be maintained.

In this embodiment, as shown in fig. 3 and 7, the driving mechanism 4 further includes a transmission member 42, the transmission member 42 is rotatably mounted on the housing 3, the transmission member 42 is in gear transmission engagement with the driving sleeve 43, and the transmission member 42 is in worm gear transmission engagement with the rotating device 41. The driving part 42 and the rotating device 41 realize self-locking through worm and gear transmission, so that the running stability of the driving mechanism 4 can be ensured.

Specifically, as shown in fig. 3 and 7, the transmission member 42 includes a rotary shaft 421 rotatably mounted to the housing 3, and a worm gear 422 and a main gear 423 axially spaced from the rotary shaft 421. The rotating device 41 may be engaged with a worm wheel 422 on a rotating shaft 421 through a worm shaft 410 installed at an output end, while the rotating shaft 421 is engaged with a pinion 431 provided at an end of the driving housing 43 through a main gear 423. Further, when the rotation device 41 drives the worm shaft 410 to rotate, the rotation shaft 421 can rotate through the cooperation of the worm wheel 422 and the worm shaft 410, so that the driving sleeve 43 is driven to rotate spirally around the traction shaft 51 or the traction shaft 51 is driven to rotate synchronously through the engagement of the main gear 423 and the auxiliary gear 431.

In this embodiment, as shown in fig. 3 and 7, a pushing disc 432 is further disposed at an end of the driving sleeve 43 away from the pinion 431, and the pushing disc 432 can abut against the locking assembly 44 during the axial movement of the driving sleeve 43. The pressing area between the driving sleeve 43 and the locking assembly 44 can be increased by the pushing disc 432 to improve the stress stability of the locking assembly 44.

In this embodiment, the pressing assembly 52 has various specific structures, and for convenience of understanding, a detailed description will be given below with one of the structures. As shown in fig. 6 to 11, the pressing assembly 52 includes a pair of pressing plates, a self-locking block 523, and a guide plate 524. The two pressing plates are movably sleeved on the traction shaft 51 at intervals, pressing grooves 520 corresponding to the outline of the lifting rope 200 are formed in the opposite end faces of the pressing plates, and the pressing grooves 520 can be matched with the traction shaft 51 to form traction grooves 500. The guide plate 524 is fixedly mounted on the housing 3 and close to the locking assembly 44, and the self-locking block 523 is mounted on the pressure plate close to the locking assembly 44 in a matched manner and matched with the guide plate 524 through a guide structure.

When the driving sleeve 43 rotates along the traction shaft 51, the driving sleeve 43 can drive the locking assembly 44 to press the adjacent pressure plate to move axially towards the other pressure plate, and further drive the lifting rope 200 to press towards the traction shaft 51 through the formed traction groove 500 so as to increase friction force. When the pressure plate rotates around the traction shaft 51 to the first balance position, the self-locking block 523 synchronously rotates with the pressure plate and gradually moves away from the locking assembly 44 through the guiding structure, so that the locking assembly 44 and the self-locking block 523 do not interfere with each other, and smooth rotation of the traction shaft 51 can be ensured. When the pressure plate rotates around the traction shaft 51 to the second balance position, the self-locking block 523 synchronously rotates with the pressure plate and approaches and is clamped with the locking assembly 44 through the guiding structure, so that the locking assembly 44 can be driven to axially push the adjacent pressure plate to move towards the direction of the other pressure plate, and the traction groove 500 can drive the lifting rope 200 to approach and press the traction shaft 51 again to realize self-locking braking so as to stop slipping.

It should be noted that the number of the self-locking blocks 523 may be one or multiple, and the self-locking blocks 523 of multiple blocks may be disposed at equal intervals along the circumferential direction of the locking assembly 44, so as to provide stable axial thrust for the locking assembly 44 when the self-locking blocks 523 are engaged with the locking assembly 44.

In this embodiment, the specific structure of the guiding structure is various, and for convenience of understanding, the following description will be made by using two specific examples; of course, specific structures of the guide structure include, but are not limited to, the following two specific examples.

Example one: as shown in fig. 6 and 8 to 11, an axially extending mounting block 5211 is provided on the platen side portion adjacent to the lock assembly 44, and a through groove 5212 is provided on the mounting block 5211. The self-locking block 523 penetrates through the through groove 5212 on the mounting block 5211, so that the self-locking block 523 can synchronously rotate along with the platen by abutting against the side part of the through groove 5212 when the platen rotates circumferentially. The locking component 44 is circular, is arc from the locking piece 523, is provided with on the deflector 524 and is arc guide slot 5240, and guide slot 5240 and locking component 44 eccentric settings, and then carry out sliding fit with guide slot 5240 through the slider 5230 that the outside set up from the locking piece 523 in order to form the guide structure. And the distance between the locking component 44 and the guide groove 5240 is gradually increased from the second balance position to the circumferential direction of the first balance position, so that the locking component 44 is gradually separated from the locking block 523 in the process of sliding along the guide groove 5240, and otherwise, the locking component 44 is gradually approached.

Example two: the self-locking block 523 can be elastically slidably mounted along the radial direction of the platen and abuts against the guide plate 524, the guide plate 524 can be arc-shaped and eccentrically arranged with the locking assembly 44, and the distance between the guide plate 524 and the locking assembly 44 is directly increased along the circumferential direction from the second equilibrium position to the first equilibrium position. During the process of rotating the self-locking block 523 from the second balance position to the first balance position, the self-locking block 523 is gradually far away from the locking assembly 44 by abutting against the guide plate 524 under the action of elastic force, and is gradually close to the locking assembly 44 otherwise.

It will be appreciated that both of the above examples may satisfy the needs of the application, and those skilled in the art may choose from according to the actual needs; for convenience of description of the following, the first example described above is preferably adopted for the guide structure in this embodiment.

In this embodiment, as shown in fig. 4, 6, 10 and 11, the locking assembly 44 is provided with a plurality of first helical teeth 4411 equally spaced in the circumferential direction, and the inner side of the self-locking piece 523 is provided with a plurality of second helical teeth 5231 equally spaced in the circumferential direction. When the self-locking piece 523 is engaged with the first helical tooth 4411 on the locking assembly 44 through the second helical tooth 5231, the engaging force of the second helical tooth 5231 to the first helical tooth 4411 along the circumferential direction can be decomposed into a first component force along the circumferential direction and a second component force along the axial direction; the second component force can drive the locking assembly 44 to abut against the adjacent pressing plate and generate a pushing force for moving towards the other pressing plate, so that the two pressing plates are close to each other to drive the lifting rope 200 to approach and press the traction shaft 51, and the friction force between the lifting rope 200 and the traction shaft 51 is increased by increasing the positive pressure between the two pressing plates, so that the two pressing plates reach the friction force balance position again to stop slipping.

In this embodiment, as shown in fig. 5, 6 and 7, the traction shaft 51 is provided with a tooth shaft section 512, and two pressing plates are disposed on two sides of the tooth shaft section 512, so that the pressing plates and the tooth shaft section 512 cooperate to form the traction groove 500 through the pressing groove 520. The gear shaft segment 512 may be engaged with grooves formed by braiding a plurality of strands on the outer surface of the hanging rope 200 through helical teeth disposed along the circumferential direction, so that the friction between the gear shaft segment 512 and the hanging rope 200 may be increased to reduce the occurrence of slip. The cross section of the pressing groove 520 is an arc line or an oblique line corresponding to the cross section of the lifting rope 200, so that when the pressure plate axially approaches, the pressing groove 520 can apply a pressing force to the lifting rope 200 in the direction approaching to the gear shaft section 512.

It should be appreciated that the grooves 520 on the two platens, when brought closer together, apply a resultant force to the hoist rope 200 directed toward the tooth shaft segment 512.

Specifically, as shown in fig. 6, 8 and 9, the pressing groove 520 includes a circumferential section 5201 and an opening section 5202; the section of the circumferential section 5201 is an arc or a diagonal line, and the opening sections 5202 are provided in two and are arranged at intervals along the circumferential direction of the circumferential section 5201. When the two pressing grooves 520 are matched with the gear shaft sections 512 to form the traction groove 500, the two pressing grooves 520 can form upper and lower openings of the traction groove 500 through the corresponding opening sections 5202, so that the lifting rope 200 can enter the traction groove 500 from the upper opening to be bent and extended in an arc shape along the circumferential section 5201 and extend out from the lower opening. The length of the lifting rope 200 within the traction groove 500 depends on the distance separating the two open sections 5202 of the pressing groove 520. For example, two opening sections 5202 may be provided at 180 ° intervals in the circumferential direction, and the rope portion of the hoist rope 200 located in the traction groove 500 may form a semicircle. In order to ensure stable matching between the lifting rope 200 and the gear shaft section 512, the spacing angle between the two opening sections 5202 along the circumferential direction is not easy to be too small or too large, 120-200 degrees can be adopted, and in order to facilitate the description of the following matters, the spacing angle between the two opening sections 5202 along the circumferential direction is preferably 180 degrees.

In this embodiment, as shown in fig. 8 and 9, when the installation of the hoist rope 200 is completed, a line between the two opening sections 5202 of the pressing groove 520 may be parallel to the vertical direction or may be spaced apart. When the device is raised, the traction shaft 51 may exert a thrust force on the hoist rope 200 during rolling along the hoist rope 200, which is equal to the rolling friction between the traction shaft 51 and the hoist rope 200. Because the lifting rope 200 is kept in contact with the pressing component 52, the pressing component 52 adjusts the position of the lifting rope 200 by rotating around the traction shaft 51, and further balances the thrust of the traction shaft 51 to the lifting rope 200 by the friction force between the lifting rope 200 and the pressing component 52, and the position of the pressing component 52 is the first balance position; in the first equilibrium position, the self-locking block 523 is spaced from the locking assembly 44. When slipping occurs between the traction shaft 51 and the lifting rope 200, it is indicated that the thrust of the traction shaft 51 to the lifting rope 200 is reduced, and therefore the friction force for balancing the thrust between the compression assembly 52 and the lifting rope 200 is reduced, so that the compression assembly 52 will reversely rotate under the traction of the lifting rope 200 until the compression assembly 52 is located at the second balancing position; in the second equilibrium position, the self-locking block 523 engages the locking assembly 44.

It will be appreciated that for the first equilibrium position and the second equilibrium position, the angle between the line between the two open segments 5202 and the vertical direction may be determined, i.e., when the angle between the line between the two open segments 5202 and the vertical direction is less than the set threshold, the hold-down assembly 52 is in the second equilibrium position and vice versa. The selection of the threshold value can be determined according to the actual requirement, for example, the threshold value can be set by taking the included angle between the vertical direction and the connecting line between the two opening sections 5202 of the pressing groove 520 when the locking block 523 is engaged with the locking assembly 44.

In this embodiment, as shown in fig. 2, 4, 6 and 7, the two platens are a first platen 521 and a second platen 522, respectively. The first pressure plate 521 may be in circumferential rolling engagement with the locking assembly 44 via the balls 442 or thrust bearings 33. An opening is provided on one side of the housing 3, which is opposite to the second platen 522, and an end cap 32 is detachably mounted on the opening, which abuts against the second platen 522 through the balls 442 or the thrust bearing 33. The pulling groove 500 is released by the detachment of the end cap 32, and thus the installation of the hoist rope 200 can be facilitated.

It should be noted that the first and second platens 521 and 522 are shifted in equilibrium position by rotation about the traction axis 51, so that in order to ensure smooth rotation of the first and second platens 521 and 522, it is necessary to reduce the frictional force to which the first and second platens 521 and 522 are subjected as much as possible. Contact between the first pressure plate 521 and the locking assembly 44 and between the second pressure plate 522 and the end cap 32 may be made by the balls 442 or the thrust bearing 33. For ease of understanding, the following will describe in detail the first platen 521 and locking assembly 44 as being engaged by balls 442 and the second platen 522 and end cap 32 as being engaged by thrust bearing 33.

In particular, as shown in fig. 4, 6 and 7, the locking assembly 44 includes a locking wheel 441, balls 442 and a cover plate 443. The outside of locking wheel 441 is provided with first helical gear 4411, and the one end of locking wheel 441 can offset the cooperation with driving cover 43, and the other end middle part of locking wheel 441 is provided with along circumferencial direction's first raceway 4410. The number of the balls 442 is plural, the balls 442 can be mounted on the first rolling way 4410 at equal intervals along the circumferential direction, the cover plate 443 is detachably mounted on the end face of the locking wheel 441, and the cover plate 443 can limit the balls 442 mounted on the first rolling way 4410, so that the balls 442 are prevented from falling off. The first pressure plate 521 is provided with a second raceway 5210 along the circumferential direction near the middle of the end face of the locking assembly 44, and the first pressure plate 521 can be in rolling engagement with the balls 442 located in the first raceway 4410 through the second raceway 5210. The inner side of the end cap 32 is provided with a bearing hole in which the thrust bearing 33 is mounted against the second platen 522.

For ease of understanding, the specific operation of the device will be described in detail; the vertical position of the connecting line between the two opening sections 5202 of the pressing groove 520 can be set to be a second balanced position, i.e., the position shown in fig. 8; the position where the angle between the connecting line between the two opening sections 5202 and the vertical direction is 45 ° is the first equilibrium position, i.e., the position shown in fig. 9.

And (one) the installation stage of the lifting rope 200.

The hoist rope 200 is suspended from the electric wire 100 and extends to the ground; when the lifting rope 200 is installed, the end cover 32 can be detached to lose the abutting limit of the second pressing plate 522, and then the second pressing plate 522 can move along the traction shaft 51 to approach the opening, and at the moment, the distance between the traction grooves 500 is increased to be larger than the section size of the lifting rope 200. The lifting rope 200 may then be extended from the top of the housing 3 into the housing 3 and out the bottom of the housing 3 through the loose traction groove 500. And in order to ensure that the lifting rope 200 does not interfere with the housing 3 when the subsequent pressing assembly 52 is changed in position, a guide wheel 34 can be installed at a position close to the top opening above the interior of the housing 3, and the lifting rope 200 extends to the traction groove 500 through the guide wheel 34. After completion of the installation of the hoist rope 200, the end cap 32 may be reinstalled in the opening such that the second pressure plate 522 is adjacent to the first pressure plate 521 under compression of the end cap 32 and compresses the hoist rope 200 against the tooth shaft section 512 of the traction shaft 51 via the traction groove 500.

It should be noted that the distance of axial movement during driving of the driving sleeve 43 is small, i.e. the offset distance of the first pressure plate 521 relative to the tooth shaft segment 512 is small, so that during the installation stage of the lifting rope 200, the pressing of the lifting rope 200 against the tooth shaft segment 512 can be achieved by pressing the second pressure plate 522 by the end cover 32, i.e. the friction between the lifting rope 200 and the tooth shaft segment 512 can substantially meet the load requirement when the lifting rope 200 is installed, which enables the traction shaft 51 to be stably limited during the first step of lifting of the device, and the first step can be completed faster to enter the second step.

And (II) the ascending stage of the device.

After completion of the installation of the hoist rope 200, the worker rides on the carriage assembly 31 with the hold down assembly 52 in the second equilibrium position shown in fig. 8. The rotation device 41 is then activated, at which point the lifting rope 200 is already compressed with the toothed shaft section 512 of the traction shaft 51.

If the friction force between the lifting rope 200 and the gear shaft section 512 cannot meet the load requirement at this time, the driving sleeve 43 will first rotate helically along the traction shaft 51 under the rotation of the rotating device 41, and then the locking wheel 441 can be pushed to press the first pressing plate 521 to drive the lifting rope 200 to compress the gear shaft section 512 until the friction force between the lifting rope 200 and the gear shaft section 512 meets the requirement, and the driving sleeve 43 is tightly screwed with the traction shaft 51 to drive the traction shaft 51 to rotate. At this time, since the pressing assembly 52 is at the second equilibrium position, but the pressing assembly 52 is not at the equilibrium position of the force, the pressing assembly 52 can be rotated with the locking wheel 441 from the position shown in fig. 8 to the first equilibrium position shown in fig. 9. The compression assembly 52 is then in equilibrium, after which the traction shaft 51 will roll up along the hoist rope 200, and the hoist rope 200 will slide relative to the compression assembly 52. The direction indicated by the dashed arrow in fig. 9 is the force direction of the corresponding member.

If the friction between the hoist rope 200 and the tooth shaft segment 512 is initially sufficient to meet the load demand, the hold down assembly 52 will rotate directly with the lock wheel 441 to the first equilibrium position.

And (III) slip occurs between the hoist rope 200 and the traction shaft 51.

When slip occurs between the traction shaft 51 and the lifting rope 200, it is indicated that the friction between the traction shaft 51 and the lifting rope 200 is reduced to be unable to meet the load requirement, so that the thrust force applied by the traction shaft 51 to the lifting rope 200 to maintain the first balance position is reduced, that is, the force balance state of the pressing assembly 52 at the first balance position is broken, and the friction force for balancing the thrust force between the pressing assembly 52 and the lifting rope 200 is reduced. The hold down assembly 52 will reverse rotation to the second equilibrium position under the traction of the hoist rope 200.

When the pressing component 52 rotates to the second balance position, the self-locking block 523 of the pressing component 52 and the locking component 44 are respectively engaged with each other through the inclined first helical tooth 4411 and the inclined second helical tooth 5231, so that the locking component 44 moves in the direction close to the first pressure plate 521, and the first pressure plate 521 is extruded by the locking component 44 to drive the lifting rope 200 to continuously press against the tooth shaft section 512 of the traction shaft 51 until the friction force between the lifting rope 200 and the tooth shaft section 512 meets the load requirement again to realize self-locking and stop slipping.

Because the device is in a descending state during the sliding process, the driving direction of the traction shaft 51 to the lifting rope 200 is an ascending direction, so that in the process that the locking assembly 44 pushes the first pressure plate 521 to compress the lifting rope 200, a space is generated between the locking assembly 44 and the driving sleeve 43, and as the friction force between the lifting rope 200 and the tooth shaft section 512 increases, the traction shaft 51 is in a descending rotating state along the lifting rope 200 before the sliding is stopped, and the traction shaft 51 drives the driving sleeve 43 to rotate spirally in the direction approaching to the locking assembly 44 through rotation, and meanwhile, the rotating device 41 can also drive the driving sleeve 43 to rotate spirally in the direction approaching to the locking assembly 44, so that the locking assembly 44 and the first pressure plate 521 are further driven to be extruded to realize double locking.

For easy understanding, the driving sleeve 43 can be provided to drive the traction shaft 51 to rotate forward to realize climbing along the lifting rope 200; i.e. the drive sleeve 43 will be brought close to the locking assembly 44 by a positive rotation when the traction shaft 51 is stationary until the drive sleeve 43 is brought into engagement with the traction shaft 51. The traction shaft 51 can drive the drive sleeve 43 into axial movement adjacent the locking assembly 44 by counter-rotation while the drive sleeve 43 remains circumferentially stationary. Accordingly, when the driving sleeve 43 is rotated in the forward direction and the traction shaft 51 is rotated in the direction, the driving sleeve 43 can be accelerated to move spirally in the direction approaching the locking assembly 44.

And (IV) the device descends.

The rotation means 41 can drive the driving sleeve 43 to rotate in opposite directions, so that a gap will be formed between the driving sleeve 43 and the locking assembly 44. To compensate for the gap, it will be appreciated from the foregoing that the traction shaft 51 needs to be rotated in a reverse direction to drive the drive sleeve 43 into axial movement closer to the locking assembly 44 until the drive sleeve 43 again abuts the locking assembly 44. And the reverse rotation of the traction shaft 51 can move downwards along the lifting rope 200; i.e. the descent of the device can be regarded as a continuous compensation of the aforementioned gap. In this process, the hold down assembly 52 will be in the second equilibrium position shown in fig. 8, so that the device can be self-locking when the descent is stopped at any height. In a popular sense, the descent of the device can be considered as the process of actively breaking the self-locking state of the rotating device 41.

In this embodiment, as shown in fig. 1 and 2, the carrier assembly 31 is suspended from the lower portion of the housing 3. The specific structure of the bearing assembly 31 is various, one of which is shown in fig. 12 and 13, and the bearing assembly 31 includes a bearing frame 313 for riding, and further includes a connection plate 311 and a spring 312. The specific structure of the carrier 313 is well known to those skilled in the art and will not be described in detail herein. The connection plate 311 is slidably mounted to the lower portion of the housing 3 by guide rods 3110 uniformly distributed along the extending direction. The springs 312 are plural, and rectangular springs can be used to increase the elastic force, the springs 312 are correspondingly sleeved on the guide rods 3110, one end of each spring 312 abuts against the connecting plate 311, and the other end abuts against the bottom of the housing 3. The carrier 313 is hinged to the middle of the connection plate 311 by a top portion.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a transmission line aerial work rope elevating gear, includes hanging rope and the casing that can take in the electric wire, its characterized in that still includes:

a traction shaft; the traction shaft is rotatably arranged on the shell;

A compression assembly; the compression assembly is arranged on the traction shaft and is matched with the traction shaft to form a traction groove for passing through the lifting rope; and

A driving mechanism; the driving mechanism is arranged on the shell and is respectively matched with the traction shaft and the compression assembly;

When ascending, the pressing component presses the lifting rope under the axial driving of the driving mechanism and is positioned at a first balance position, and then the traction shaft rolls and climbs along the pressed lifting rope under the driving of the rotation of the driving mechanism;

When the lifting rope and the traction shaft skid, the pressing component is positioned at a second balance position under the traction of the lifting rope so as to be clamped in the driving mechanism, so that the pressing component performs self-locking pressing on the lifting rope until the lifting rope stops skidding;

The driving mechanism includes:

a rotating device; the rotating device is fixedly arranged on the shell;

a drive sleeve; the driving sleeve is in threaded fit with the traction shaft and is in transmission connection with the rotating device; and

A locking assembly; the locking component is movably sleeved on the traction shaft and is positioned between the driving sleeve and the pressing component;

when the lifting is required, the driving sleeve is driven by the rotating device to spirally move along the traction shaft so as to push the locking assembly to compress the compressing assembly and the lifting rope and be positioned at a first balance position, and then the traction shaft and the driving sleeve synchronously rotate under the tightening force so as to perform rolling climbing along the lifting rope;

When slipping occurs, the compression assembly is suitable for being reset to a second balance position to be clamped with the locking assembly and drive the locking assembly to push the compression assembly to perform self-locking compression on the lifting rope;

The compression assembly includes:

a pair of platens; the pressing plates are movably sleeved on the traction shaft at intervals, pressing grooves corresponding to the outline of the lifting rope are formed in the end faces of the pressing plates, and the pressing grooves are suitable for being matched with the traction shaft to form the traction grooves;

A guide plate; the guide plate is fixedly arranged on the shell and is close to the locking assembly; and

A self-locking block; the self-locking block is arranged on the pressure plate close to the locking assembly in a matched mode and matched with the guide plate through a guide structure;

When the pressing disc rotates to a first balance position around the traction shaft, the self-locking block synchronously rotates along with the pressing disc and gradually moves away from the locking assembly through the guide structure;

when the pressing disc rotates to a second balance position around the traction shaft, the self-locking block synchronously rotates along with the pressing disc and approaches and is clamped with the locking assembly through the guide structure;

The side part of the pressure plate, which is close to the locking component, is provided with an axially extending mounting block, and the self-locking block is arranged on the mounting block in a penetrating way and synchronously rotates along with the pressure plate;

The locking assembly is circular, the self-locking block is arc-shaped, an arc-shaped guide groove is formed in the guide plate, the guide groove and the locking assembly are eccentrically arranged, and the self-locking block is in sliding fit with the guide groove to form the guide structure;

The locking assembly is provided with a plurality of first helical teeth at equal intervals along the circumferential direction, and the inner side of the self-locking block is provided with a plurality of second helical teeth at equal intervals along the circumferential direction;

When the self-locking block is clamped with the first helical teeth on the locking assembly through the second helical teeth, the locking assembly is subjected to thrust force moving towards the direction approaching to the pressure plate;

the traction shaft is provided with a tooth shaft section, and the two pressure plates are arranged on two sides of the tooth shaft section, so that the pressure grooves and the tooth shaft section are matched to form the traction grooves;

the gear shaft section is suitable for being matched with a groove formed by braiding a plurality of strands of lifting ropes through bevel gears;

The pressing groove comprises a circumferential section with an arc section or an oblique line section and two opening sections arranged on the circumferential section at intervals along the circumferential direction, and the lifting rope is suitable for being pressed by the opening sections, penetrating through the traction groove and being pressed by the circumferential section in a wrapping and pressing mode to be close to the gear shaft section.

2. The overhead working rope lifting device for the power transmission line according to claim 1, wherein the driving mechanism further comprises a transmission member rotatably mounted on the housing, the transmission member is in gear transmission engagement with the driving sleeve, and the transmission member is in worm gear transmission engagement with the rotating device.

3. The power transmission line overhead working rope lifting device according to claim 1, wherein two of the opening sections of the pressing groove are arranged at 180 ° intervals in a circumferential direction of the circumferential section; when the pressing assembly is at the second balance position, the included angle between the connecting line between the two opening sections and the vertical direction is smaller than a set threshold value; when the pressing assembly is in the first balance position, the included angle between the connecting line between the two opening sections and the vertical direction is larger than a set threshold value.

4. The overhead working rope lifting device for a power transmission line according to claim 1, wherein the two pressure plates are a first pressure plate and a second pressure plate respectively, and the first pressure plate is suitable for rolling fit with the locking assembly in the circumferential direction through a ball or a thrust bearing;

an opening right opposite to the second pressure plate is formed in one side of the shell, and an end cover propped against the second pressure plate through a ball or thrust bearing is detachably arranged in the opening; and the traction groove is loosened and the hanging rope is installed through the disassembly of the end cover.

5. An overhead working cable lifting device for a power transmission line according to any one of claims 1 to 4, wherein a bearing assembly for riding is suspended and mounted at a lower portion of said housing; the bearing assembly comprises a bearing frame for riding, and the bearing frame is hinged to the lower part of the shell.