Cable installation based lifting protection device and power climbing protection device

Abstract

The embodiment of the present application discloses a kind of lifting protection equipment based on cable installation and electric power climbing protection device, including lifting protection mechanism, the lifting protection mechanism includes force sensor, lifting module, stop module, lifting rope and seat plate, the lifting module is used to be installed on the cable of transmission tower, the force sensor is connected between the lifting module and the cable, one end of the lifting rope is connected with the lifting module, so that the lifting rope can be moved upwards along the height direction of transmission tower, the other end of the lifting rope is connected with the seat plate, the seat plate is used for electric power maintenance personnel to ride, the stop module is installed on the lifting module, the stop module is electrically connected with the force sensor, and the lifting module can be stopped by the force sensor under the control of the force sensor;And fall arrestor, the fall arrestor is used to be movably installed on the main rod of transmission tower, and the fall arrestor is connected with electric power maintenance personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power protection equipment, and particularly relates to a lifting protection equipment based on cable installation and a power climbing protection device. BACKGROUND

[0002] A power transmission tower is a kind of power facility widely used in the power industry, which is used for erecting a power transmission cable at a high position of tens of meters or even dozens of meters from the ground, so as to facilitate the transmission of the power of the power transmission cable. Various power appliances, such as insulator strings, are installed on the power transmission tower and the power transmission cable. These power appliances are prone to failure or damage after long-term use in outdoor harsh environments, and therefore, power maintenance personnel need to climb the power transmission tower to carry out maintenance and replacement work.

[0003] Since the installation position of the power appliance is very high from the ground, the power maintenance personnel are prone to fatigue during the long-term and frequent climbing process of the power transmission tower, and a slight carelessness will cause the hands to drop or the feet to step off, which will cause a high fall safety hazard, thereby greatly threatening the personal safety of the power maintenance personnel. At present, although the power maintenance personnel will install a fall arrestor when climbing, the fall arrestor only has a simple passive anti-falling function and low reliability, and there is still a potential safety hazard of high fall of the power maintenance personnel. SUMMARY

[0004] Therefore, the present application provides a lifting protection equipment based on cable installation and a power climbing protection device, which are used to solve the problem of low safety protection performance and high fall safety hazard in the prior art.

[0005] The present application provides a lifting protection equipment based on cable installation, which comprises:

[0006] A lifting protection mechanism, the lifting protection mechanism comprises a force sensor, a lifting module, a stop module, a lifting rope and a seat plate, the lifting module is arranged on a cable of a power transmission tower, the force sensor is connected between the lifting module and the cable, one end of the lifting rope is connected with the lifting module, so that the lifting rope can move upward along the height direction of the power transmission tower, the other end of the lifting rope is connected with the seat plate, the seat plate is used for the power maintenance personnel to ride, the stop module is arranged on the lifting module, the stop module is electrically connected with the force sensor and can be controlled by the force sensor to stop the lifting module; and

[0007] A fall arrestor, the fall arrestor is movably arranged on a main rod of the power transmission tower, and the fall arrestor is connected with the power maintenance personnel.

[0008] In one of the embodiments, the seat plate is provided with a first hanging point, a second hanging point and a third hanging point in the circumferential direction, and the lifting rope is divided into a first branch rope, a second branch rope and a third branch rope from the end of the lifting module, the first branch rope is connected with the first hanging point, the second branch rope is connected with the second hanging point, and the third branch rope is connected with the third hanging point.

[0009] In one of the embodiments, the lifting module comprises a carrier plate, a first support, a second support, a lifting motor, a speed reducer, a lifting shaft and a lifting wheel, the carrier plate is provided with a plurality of clamps, the carrier plate is installed on the cable through the clamps, the first support and the second support are arranged on the carrier plate, the speed reducer and the lifting motor are arranged on the first support and connected with each other, the lifting shaft is rotatably arranged on the second support and connected with the output shaft of the speed reducer, the lifting wheel is fixedly arranged on the lifting shaft and can rotate with the lifting shaft, and the lifting rope is wound and installed on the outer periphery of the lifting wheel from the end of the seat plate.

[0010] In one of the embodiments, the stop module comprises a limiting assembly and a stopping assembly, the lifting wheel is provided with a stopping cooperation part, in the initial state, the limiting assembly is connected with the stopping assembly, the stopping assembly is separated from the stopping cooperation part, so that the lifting wheel can rotate normally, in the stopping state, the limiting assembly releases the stopping assembly, the stopping assembly is connected with the stopping cooperation part, so as to stop the lifting wheel.

[0011] In one of the embodiments, the limiting assembly comprises a limiting motor, a limiting frame and a limiting hook, the limiting motor is vertically arranged and the motor shaft of the limiting motor is arranged upward, the limiting frame is connected with the motor shaft of the limiting motor, the limiting hook is arranged on the limiting frame, the stopping assembly comprises a column, an elastic assembly, a cooperation block and a stopping pin, the cooperation block is installed on the column through the elastic assembly, the stopping pin is arranged on the cooperation block, the cooperation block is provided with a hook groove, the limiting hook is detachably hooked with the hook groove, and the stopping cooperation part is a stopping cooperation hole.

[0012] In the stopping state, the limiting motor drives the limiting frame to drive the limiting hook to deflect, the limiting hook is separated from the hook groove, and the stopping pin is inserted into the stopping cooperation hole under the elastic force of the elastic assembly to stop the lifting wheel;

[0013] The stopping cooperation hole is a inclined hole, the stopping pin is arranged obliquely, and the end of the stopping pin away from the cooperation block is arranged toward the hole of the inclined hole.

[0014] In one of the embodiments, the cable installation based lifting protection device further comprises a controller and an instruction transmitter, the instruction transmitter is arranged on the seat plate, the controller is electrically connected with the force sensor, and a wireless receiving module of the controller is in communication connection with a wireless transmitting module of the instruction transmitter.

[0015] In one of the embodiments, the anti-falling trolley comprises a trolley body, a moving wheel and a wedging mechanism, the moving wheel is rotatably arranged on the trolley body and is used for rolling cooperation with the groove wall of the cooperation groove, and the wedging mechanism is connected with the end of the anti-falling rope away from the anti-falling grommet.

[0016] In the non-force state, the wedging mechanism is in the recovery state and is arranged in non-contact with the groove wall of the cooperation groove; in the tension state, the wedging mechanism is switched from the recovery state to the extension state and is wedged with the groove wall of the cooperation groove.

[0017] In one of the embodiments, the wedging mechanism comprises an actuating rod, a first actuating wheel, a second actuating wheel, a first wedging component and a second wedging component, the actuating rod is movably arranged on the trolley body and is connected with the anti-falling rope, the end of the actuating rod away from the anti-falling rope is connected with the trolley body through an elastic member, the first actuating wheel and the second actuating wheel are rotatably arranged on the trolley body and are both in transmission cooperation with the actuating rod, the first actuating wheel is provided with a first actuating protrusion, the first actuating protrusion is in abutment with the first wedging component, the first wedging component is movably arranged on the trolley body and can extend out of or retract into the trolley body, the second actuating wheel is provided with a second actuating protrusion, the second actuating protrusion is in abutment with the second wedging component, the second wedging component is movably arranged on the trolley body and can extend out of or retract into the trolley body; in the extended position, the first wedging component and the second wedging component can be wedged and limited with the groove wall of the cooperation groove.

[0018] In one of the embodiments, the actuating rod has a first tooth portion and a second tooth portion arranged in space and in opposition, the first actuating wheel is further provided with a first cooperation tooth, the second actuating wheel is further provided with a second cooperation tooth, the first cooperation tooth is in mesh with the first tooth portion, and the second cooperation tooth is in mesh with the second tooth portion.

[0019] The first wedging component and the second wedging component both comprise a carrier rod and a plurality of wedging blocks, and the plurality of wedging blocks are arranged on the carrier rod in space along the length direction of the carrier rod.

[0020] The application further provides a power climbing protection device, which comprises the cable installation based lifting protection device according to any one of the above.

[0021] The implementation of the embodiments of the application has the following beneficial effects:

[0022] The cable installation based lifting protection equipment and the power climbing protection device of the present scheme are applied to the use occasions where power maintenance personnel climb the power transmission tower in order to overhaul or replace the damaged power appliances. Specifically, when in use, the lifting module is first installed on the cable at the high position of the power transmission tower, then the power maintenance personnel can sit in the seat plate, then the arrestor installed on the main rod of the power transmission tower is connected with the power maintenance personnel, and then the lifting module is started, the lifting module drives the lifting rope to move upward, so as to drive the seat plate and the power maintenance personnel to move upward along the power transmission tower. Compared with the prior art, since the power maintenance personnel can climb the power transmission tower in a sitting position (in this process, the power maintenance personnel hold the power transmission tower with hands and step on the power transmission tower with feet), the working intensity of the power maintenance personnel can be greatly reduced, the power maintenance personnel is not easy to feel tired, the concentration is ensured, the probability of hand slipping and foot stepping off is reduced, and the safety and reliability of climbing the power transmission tower are improved. In addition, the arrestor and the lifting protection mechanism form two protection measures for the power maintenance personnel, that is, even if the power maintenance personnel accidentally falls off the power transmission tower due to hand slipping and foot stepping off, the impact force generated by gravity in an instant will be transmitted to the force sensor along the lifting rope and the lifting module. After the force sensor senses the abnormal change of the force of the lifting rope, the force sensor will immediately output an instruction to the stop module, so that the stop module immediately acts to stop the lifting module, so that the lifting rope and the seat plate can limit the power maintenance personnel from falling, and at the same time, the arrestor can also prevent the power maintenance personnel from swinging in the air, so as to ensure the stable posture of the power maintenance personnel in the high position. In summary, the cable installation based lifting protection equipment and the power climbing protection device of the present scheme can effectively eliminate the potential safety hazard of high falling of the power maintenance personnel caused by operation errors and the like, and well protect the personal safety of the power maintenance personnel climbing the power transmission tower. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0024] Among them:

[0025] Figure 1 The structure schematic diagram of the power maintenance personnel climbing the power transmission tower by means of the power climbing protection device is described for an embodiment;

[0026] Figure 2 The assembly structure schematic diagram of the lifting wheel and the stop module is described for an embodiment;

[0027] Figure 3 Fig. 1 is a structural schematic diagram of a fall-preventing trolley in an embodiment;

[0028] Figure 4 Fig. 2 is a structural schematic diagram of a lifting module installed on a cable in an embodiment.

[0029] Legend of reference signs:

[0030] 100, power climbing protection device; 10, lifting protection mechanism; 11, force sensor; 12, lifting module; 121, first support; 122, second support; 123, lifting motor; 124, speed reducer; 125, lifting shaft; 126, lifting wheel; 126a, stop matching hole; 127, carrier plate; 127a, clamp; 13, stop module; 131, limiting motor; 132, limiting frame; 133, limiting hook; 134, stand; 135, elastic assembly; 136, matching block; 137, stop bolt; 14, lifting rope; 141, first branch rope; 142, second branch rope; 143, third branch rope; 15, seat plate; 20, fall arrester; 20a, fall-preventing trolley; 21, trolley body; 22, wedge-tightening mechanism; 221, actuating rod; 222, first actuating wheel; 222a, first actuating convex part; 223, second actuating wheel; 223a, second actuating convex part; 224, first wedge-tightening assembly; 225, second wedge-tightening assembly; 226, carrier rod; 227, wedge-tightening block; 20b, fall-preventing rope; 20c, fall-preventing thimble; 200, power transmission tower; 210, main rod; 220, cable. DETAILED DESCRIPTION

[0031] In order to make the above objectives, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in combination with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the concept of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] like Figure 1 and Figure 2 The diagram shown illustrates an embodiment of a power maintenance worker climbing a transmission tower 200 using a power climbing safety device 100. The power climbing safety device 100 includes a lifting safety device installed based on a cable 220, which includes a lifting safety mechanism 10 and a fall arrestor 20.

[0036] The lifting protection mechanism 10 includes a force sensor 11, a lifting module 12, a stop module 13, a lifting rope 14, and a seat plate 15. The lifting module 12 is installed on the cable 220 of the transmission tower 200. The force sensor 11 is connected between the lifting module 12 and the cable 220. One end of the lifting rope 14 is connected to the lifting module 12, allowing the lifting rope 14 to move upward along the height direction of the transmission tower 200. The other end of the lifting rope 14 is connected to the seat plate 15, which is used for power maintenance personnel to sit on. The stop module 13 is installed on the lifting module 12 and is electrically connected to the force sensor 11. The stop module 13 can be controlled by the force sensor 11 to stop the lifting module 12. The fall arrestor 20 is movably installed on the main pole 210 of the transmission tower 200 and is connected to the power maintenance personnel.

[0037] The embodiment of the present application has the following advantages: the lifting protection device based on cable installation and the power climbing protection device 100 are applied to the use occasion of climbing the power transmission tower 200 by the power maintenance personnel in order to maintain or replace the damaged power equipment. Specifically, the lifting module 12 is installed on the cable 220 at the high position of the power transmission tower 200, then the power maintenance personnel can sit in the seat plate 15, then the power maintenance personnel is connected with the anti-falling device 20 installed on the main rod 210 of the power transmission tower 200, and then the lifting module 12 is started to drive the lifting rope 14 to move upward, so as to drive the seat plate 15 and the power maintenance personnel to move upward along the power transmission tower 200. Compared with the prior art, the power maintenance personnel can climb the power transmission tower 200 in a sitting position (in this process, the power maintenance personnel holds the power transmission tower 200 with hands and steps on the power transmission tower 200 with feet), so the working strength of the power maintenance personnel can be greatly reduced, the power maintenance personnel is not easy to feel tired, the concentration is ensured, the probability of hand slipping and foot stepping off is reduced, and the safety and reliability of climbing the power transmission tower 200 are improved. In addition, the power maintenance personnel is protected by the anti-falling device 20 and the lifting protection mechanism 10, that is, even if the power maintenance personnel accidentally falls off the power transmission tower 200 due to hand slipping and foot stepping off, the impact force generated by gravity in an instant will be transmitted to the force sensor 11 along the lifting rope 14 and the lifting module 12. After the force sensor 11 senses the abnormal change of the force of the lifting rope 14, the force sensor 11 will immediately output an instruction to the stop module 13, so that the stop module 13 immediately acts to stop the lifting module 12, so that the lifting rope 14 and the seat plate 15 can limit the power maintenance personnel from falling, and at the same time, the anti-falling device 20 can also prevent the power maintenance personnel from swinging in the air, so as to ensure the stable posture of the power maintenance personnel in the air. In summary, the lifting protection device based on cable installation and the power climbing protection device 100 can effectively eliminate the potential safety hazard of high falling of the power maintenance personnel caused by operation errors, and well protect the personal safety of the power maintenance personnel climbing the power transmission tower 200.

[0038] In order to ensure that the power maintenance personnel sitting on the seat plate 15 has a stable posture and does not slip due to the inclination of the seat plate 15, in one embodiment, the first hanging point, the second hanging point and the third hanging point are arranged at intervals in the circumferential direction of the seat plate 15, the end of the lifting rope 14 away from the lifting module 12 is divided into the first branch rope 141, the second branch rope 142 and the third branch rope 143, the first branch rope 141 is connected with the first hanging point, the second branch rope 142 is connected with the second hanging point, and the third branch rope 143 is connected with the third hanging point. Preferably, the first hanging point, the second hanging point and the third hanging point are distributed in an equilateral triangle shape, which can ensure that the forces of the three hanging points are uniform, and in turn can ensure that the posture of the seat plate 15 is stable.

[0039] For example, the first, second and third hanging points are each provided with a hanging ring, and the ends of the first, second and third branch ropes 141, 142 and 143 are each provided with a quick-release hook, which is hung or separated from the hanging ring, so as to reduce the installation and disassembly difficulty of the hoisting rope 14 and the seat plate 15, and ensure the connection reliability.

[0040] As shown in the drawings, in one of the embodiments, the hoisting module 12 includes a carrier plate 127, a first support 121, a second support 122, a hoisting motor 123, a speed reducer 124, a hoisting shaft 125 and a hoisting wheel 126. The carrier plate 127 is provided with a plurality of hoops 127a, and the carrier plate 127 is installed on the cable 220 through the hoops 127a. Preferably, the cable includes two cables arranged side by side and spaced apart in the horizontal direction, and the carrier plate 127 is fixed to the two cables through at least two hoops 127a at the same time, so as to improve the stability of the installation of the hoisting module 12 on the cable 127, and inhibit the cable from shaking. Figure 1 The first support 121 and the second support 122 are arranged on the carrier plate 127 in a spaced apart manner. The speed reducer 124 and the hoisting motor 123 are arranged on the first support 121 and connected to each other. The hoisting shaft 125 is rotatably arranged on the second support 122 and connected to the output shaft of the speed reducer 124. The hoisting wheel 126 is fixed to the hoisting shaft 125 and can follow the hoisting shaft 125. The end of the hoisting rope 14 away from the seat plate 15 is wound and installed on the outer periphery of the hoisting wheel 126.

[0041] In operation, the hoisting motor 123 outputs high-speed rotating power to the speed reducer 124. The speed reducer 124 transmits the rotating power to the hoisting shaft 125 after reducing the speed and increasing the torque. The hoisting shaft 125 rotates synchronously to drive the hoisting wheel 126 to rotate. The hoisting wheel 126 winds the hoisting rope 14, so that the hoisting rope 14 can drive the seat plate 15 and the electric power maintenance personnel to move upward along the power transmission tower 200. In this process, the electric power maintenance personnel hold the auxiliary pole of the power transmission tower 200 with their hands, and alternately step on the stepping of the power transmission tower 200 with their feet, so as to realize the sitting posture and realize the climbing of the power transmission tower 200 with only a small force, which greatly reduces the burden of the electric power maintenance personnel to climb high.

[0042]

[0043] ​In one embodiment, the stop module 13 includes a limiting component and a stopping component. The lifting wheel 126 is provided with a stopping engagement part. In the initial state, the limiting component is connected to the stopping component, and the stopping component is separated from the stopping engagement part, allowing the lifting wheel 126 to rotate normally. Thus, the lifting wheel 126 can normally drive the lifting rope 14 to move upwards, thereby assisting power maintenance personnel in climbing the transmission tower 200 with less effort. In the stopping state, that is, when an accident occurs causing a sudden fall by power maintenance personnel, the limiting component releases the stopping component, and the stopping component connects with the stopping engagement part, thereby stopping the lifting wheel 126.

[0044] like Figure 2 As shown, specifically, in one embodiment, the limiting component includes a limiting motor 131, a limiting frame 132, and a limiting hook 133. The limiting motor 131 is arranged vertically with its motor shaft facing upward. The limiting frame 132 is connected to the motor shaft of the limiting motor 131. The limiting hook 133 is disposed on the limiting frame 132. The stopping component includes a column 134, an elastic component 135, a mating block 136, and a stopping pin 137. The mating block 136 is mounted on the column 134 through the elastic component 135. The stopping pin 137 is disposed on the mating block 136. The mating block 136 has a hook groove. The limiting hook 133 is separably hooked to the hook groove. The stopping mating part is a stopping mating hole 126a.

[0045] When stopped, the limit motor 131 drives the limit frame 132 to deflect the limit hook 133, the limit hook 133 disengages from the hook groove, and the stop pin 137 is inserted into the stop mating hole 126a under the elastic force of the elastic component 135 to stop the lifting wheel 126.

[0046] During operation, when the force sensor 11 senses a sudden change in the force on the lifting rope 14, it immediately outputs a command to the limit motor 131. The limit motor 131 drives the limit hook 133 to disengage from the hook groove. Due to the loss of the constraint force of the limit hook 133, the deformed elastic component 135 outputs a reset elastic force to the mating block 136, causing the mating block 136 to automatically push the stop pin 137 close to the side of the lifting wheel 126 and swing. As the lifting wheel 126 rotates, when the stop mating hole 126a rotates to align with the stop pin 137, the stop pin 137 will automatically insert into the stop mating hole 126a to physically limit the lifting wheel 126, preventing the lifting wheel 126 from rotating in the opposite direction. This achieves the effect of limiting the fall of the lifting rope 14 and the seat plate 15, thus preventing power maintenance personnel from falling from heights.

[0047] In order to ensure that the stop pin 137 is more easily inserted into the stop matching hole 126a, in one embodiment, the stop matching hole 126a is provided as a slant hole, the stop pin 137 is provided as a slant, and the end of the stop pin 137 away from the matching block 136 is provided towards the hole opening of the slant hole. Preferably, the end of the stop pin 137 close to the lifting wheel 126 is formed as a conical head structure, and along with the reverse rotation of the lifting wheel 126 (i.e. the rotation direction causing the lifting rope 14 to move downwards), the conical head structure slides along the side surface of the lifting wheel 126, and under the guide of the taper surface of the conical head structure and the hole wall of the slant hole, the stop pin 137 can be quickly, smoothly and accurately inserted into the stop matching hole 126a.

[0048] In addition, in one embodiment, the lifting protection device based on cable installation further comprises a controller and an instruction transmitter, the instruction transmitter is provided on the seat plate 15, the controller is electrically connected with the force sensor 11, and the wireless receiving module of the controller is in communication connection with the wireless sending module of the instruction transmitter. After the lifting protection mechanism 10 is triggered to stop due to hand slipping and / or foot stepping empty during the climbing process, and the electric power maintenance personnel eliminate the emergency situation and resume the normal climbing action, a reset instruction can be sent to the controller by operating the instruction transmitter, and the controller can control the force sensor 11 to reset, so that the limiting motor 131 drives the limiting hook 133 to rotate and reset to be re-connected with the hook groove hook, so as to separate the stop pin 137 from the stop matching hole 126a, and the lifting wheel 126 loses the constraint force and can be driven by the lifting motor 123 to drive the lifting rope 14 to move upwards again, so as to assist the electric power maintenance personnel to climb the power transmission tower 200.

[0049] For example, the instruction transmitter can be in any one of the forms of a key, a touch screen, etc.

[0050] Optionally, the force sensor 11 can be a pressure sensor, etc. According to the installation structure of the lifting wheel 126 and the lifting rope 14, when the electric power maintenance personnel slips and generates an impact force on the lifting rope 14, the pressure sensor can detect the positive (the pressure applied by the lifting module 12 on the pressure sensor 11) pressure decrease change, or can detect the positive pressure increase change. In summary, as long as the real-time pressure value of the pressure sensor changes suddenly, it indicates that the electric power maintenance personnel has a dangerous situation and needs emergency stop intervention.

[0051] As shown in FIG. 1, Figure 3 In addition, in one embodiment, the anti-falling trolley 20a comprises a trolley body 21, a moving wheel and a wedge tightening mechanism 22, the moving wheel is rotatably provided on the trolley body 21 and is used to rollingly match with the groove wall of the matching groove, and the wedge tightening mechanism 22 is connected with the end of the anti-falling rope 20b away from the anti-falling sleeve ring 20c;

[0052] In the non-force state, the wedge mechanism 22 is in the recovery state and is arranged in non-contact with the groove wall of the matching groove; in the tension state, the wedge mechanism 22 is switched from the recovery state to the stretched state and is wedged with the groove wall of the matching groove.

[0053] When the electric power maintenance personnel normally climb upward along the power transmission tower 200, the posture of the electric power maintenance personnel is normal, at this time, no additional tension is generated on the anti-falling rope 20b, the anti-falling rope 20b is in a relaxed state, thus no tension is generated on the wedge mechanism 22, the wedge mechanism 22 remains in the recovery state inside the vehicle body 21 and does not contact the groove wall of the matching groove, at this time, only the moving wheel is in rolling contact with the groove wall of the matching groove, so as to ensure that the anti-falling trolley 20a can move upward along the power transmission tower 200 synchronously with the electric power maintenance personnel who climbs upward.

[0054] However, when an accident occurs, for example, the hands of the electric power maintenance personnel slip off the power transmission tower 200, or the feet slip off the stepped position, so that the posture of the electric power maintenance personnel is unstable, or even falls from the power transmission tower 200, the anti-falling rope 20b will generate a pulling force, the anti-falling rope 20b will further exert a tension on the wedge mechanism 22, so as to force the wedge mechanism 22 to be quickly switched from the recovery state to the stretched state, at this time, at least part of the wedge mechanism 22 extends outside the vehicle body 21 and can be wedged with the groove wall of the matching groove, the friction force generated by the wedge can inhibit the downward sliding of the anti-falling trolley 20a relative to the power transmission tower 200, so as to achieve the effect of pulling the electric power maintenance personnel to prevent further falling, and avoid the safety accident of high falling of the electric power maintenance personnel to cause life danger.

[0055] It should be noted that the anti-falling hoop is always sleeved outside the main rod 210, and also forms an anti-falling pulling effect on the electric power maintenance personnel, so that the wedge mechanism 22 can together exert an emergency anti-falling effect on the electric power maintenance personnel.

[0056] As Figure 3As shown, specifically, in one of the embodiments, the wedging mechanism 22 includes an actuating rod 221, a first actuating wheel 222, a second actuating wheel 223, a first wedging assembly 224, and a second wedging assembly 225. The actuating rod 221 is movably arranged on the vehicle body 21 and connected with the fall arrest rope 20b. An end of the actuating rod 221 away from the fall arrest rope 20b is connected with the vehicle body 21 through an elastic member. The first actuating wheel 222 and the second actuating wheel 223 are both rotatably arranged on the vehicle body 21 and both in transmission cooperation with the actuating rod 221. The first actuating wheel 222 is provided with a first actuating protrusion 222a, which is in abutment with the first wedging assembly 224. The first wedging assembly 224 is movably arranged on the vehicle body 21 and capable of extending out of or retracting into the vehicle body 21. The second actuating wheel 223 is provided with a second actuating protrusion 223a, which is in abutment with the second wedging assembly 225. The second wedging assembly 225 is movably arranged on the vehicle body 21 and capable of extending out of or retracting into the vehicle body 21. When in the extended position, the first wedging assembly 224 and the second wedging assembly 225 are capable of being wedged and limited by the groove walls of the cooperating grooves.

[0057] When a dangerous situation occurs, the electric power maintenance personnel applies a pulling force to the actuating rod 221 through the fall arrest rope 20b. The actuating rod 221 is pulled and simultaneously drives the first actuating wheel 222 and the second actuating wheel 223 to rotate, so that the first actuating protrusion 222a and the second actuating protrusion 223a synchronously push and move the first wedging assembly 224 and the second wedging assembly 225 to the outside of the vehicle body 21 until they are extended to the outside of the vehicle body 21. The first wedging assembly 224 and the second wedging assembly 225 are wedged and cooperated with the groove walls of the cooperating grooves to generate a friction wedging force, so as to prevent the fall arrest device 20 from only sliding downward relative to the power transmission tower 200 and achieve the effect of preventing the electric power maintenance personnel from falling.

[0058] When the electric power maintenance personnel recovers to the normal climbing posture for self-rescue, the pulling force of the fall arrest rope 20b disappears immediately. Under the pulling of the reset elastic force of the elastic member, the actuating rod 221 is automatically moved and reset, and in turn drives the first wedging assembly 224 and the second wedging assembly 225 to automatically retract into the vehicle body 21.

[0059] Further, the actuating rod 221 has a first tooth portion and a second tooth portion oppositely arranged with a spacing, the first actuating wheel 222 is further provided with a first matching tooth, and the second actuating wheel 223 is further provided with a second matching tooth, the first matching tooth is engaged with the first tooth portion, and the second matching tooth is engaged with the second tooth portion. By virtue of the engagement of the first matching tooth with the first tooth portion and the engagement of the second matching tooth with the second tooth portion, the self-locking effect of the actuating rod 221 on the first actuating wheel 222 and the second actuating wheel 223 can be achieved, so as to prevent the first actuating wheel 222 and the second actuating wheel 223 from rotating in a slipping manner relative to the actuating rod 221 when the first actuating wheel 222 and the second actuating wheel 223 are subjected to the reaction force of the groove wall of the matching groove, and the first wedge assembly 224 and the second wedge assembly 225 are caused to move inwardly of the vehicle body 21, so as to cause the wedge force to be insufficient and the arrestor 20 to be unable to stop on the power transmission tower 200, and a safety accident of a high fall of a power maintenance personnel to occur.

[0060] Further, in an optional embodiment, the first wedge assembly 224 and the second wedge assembly 225 each include a carrier rod 226 and a plurality of wedge blocks 227, the plurality of wedge blocks 227 are arranged on the carrier rod 226 along the length direction of the carrier rod 226. By virtue of the plurality of wedge blocks 227 simultaneously wedging against the groove wall of the matching groove, greater wedge friction can be provided, so as to ensure that the arrestor 20 can reliably stop on the power transmission tower 200, and reliable limiting protection is provided for the power maintenance personnel.

[0061] For example, the wedge block 227 is made of a material with a large friction coefficient, such as rubber, epoxy resin, etc. The wedge block 227 can be assembled and fixed with the carrier rod 226 in one of the following manners, such as threaded connection, buckle connection, riveting, etc.

[0062] Preferably, the side surface of the wedge block 227 for contacting the groove wall of the matching groove is further provided with a protective texture structure, so as to improve the wedge friction of the wedge block 227 against the groove wall of the matching groove.

[0063] In order to ensure that the carrier rod 226 can be extended from the vehicle body 21 in a horizontal posture, so that all the wedge blocks 227 can simultaneously wedge against the groove wall of the matching groove, in an embodiment, the wedge mechanism 22 further includes a guide rail unit, the guide rail unit is guided and matched with the carrier rod 226. For example, the guide rail unit includes a first guide rail and a second guide rail, the first guide rail is arranged at one end of the carrier rod 226 in the length direction, so as to be used for slidingly guiding the end; and the second guide rail is arranged at the other end of the carrier rod 226 in the length direction, so as to be used for slidingly guiding the end.

[0064] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0065] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A cable installation based lift protection apparatus, characterized by, The utility model relates to a power transmission tower maintenance device, which comprises: a lifting protection mechanism, the lifting protection mechanism comprising a force sensor, a lifting module, a stop module, a lifting rope and a seat plate, the lifting module being arranged on a cable of a power transmission tower, the force sensor being connected between the lifting module and the cable, one end of the lifting rope being connected to the lifting module so that the lifting rope can move upward along the height direction of the power transmission tower, the other end of the lifting rope being connected to the seat plate, the seat plate being used for a power maintenance worker to ride, the stop module being arranged on the lifting module, the stop module being electrically connected to the force sensor and being controlled by the force sensor to stop the lifting module; the force sensor is a pressure sensor, the lifting module comprises a lifting wheel, and when the power maintenance worker slips and generates an impact force on the lifting rope, the pressure sensor detects a decrease in positive pressure or an increase in positive pressure according to different mounting structures of the lifting wheel and the lifting rope; and a fall arrestor, the fall arrestor being movably arranged on a main pole of a power transmission tower and being connected to a power maintenance worker; the fall arrestor comprising a fall arrest trolley, a fall arrest rope and a fall arrest collar, the fall arrest trolley being movably arranged in a matching groove of the power transmission tower, one end of the fall arrest rope being connected to the fall arrest trolley, the other end of the fall arrest rope being connected to the fall arrest collar, and the fall arrest collar being used for being sleeved on the body of the power maintenance worker; the fall arrest trolley comprising a trolley body, a moving wheel and a wedging mechanism, the moving wheel being rotatably arranged on the trolley body and being used for rolling cooperation with the groove wall of the matching groove, and the wedging mechanism being connected to the end of the fall arrest rope away from the fall arrest collar; in a non-force state, the wedging mechanism is in a retracted state and is arranged in non-contact with the groove wall of the matching groove; in a tension state, the wedging mechanism is switched from the retracted state to an extended state and is wedged with the groove wall of the matching groove; the seat plate is provided with a first hanging point, a second hanging point and a third hanging point in the circumferential direction, one end of the lifting rope away from the lifting module is divided into a first branch rope, a second branch rope and a third branch rope, the first branch rope is connected to the first hanging point, the second branch rope is connected to the second hanging point, and the third branch rope is connected to the third hanging point; the first hanging point, the second hanging point and the third hanging point are provided with a hanging ring, and the ends of the first branch rope, the second branch rope and the third branch rope are provided with quick-release hooks, the quick-release hooks being hung or separated from the hanging ring. The wedge mechanism comprises an actuating rod, a first actuating wheel, a second actuating wheel, a first wedge assembly and a second wedge assembly, the actuating rod is movably arranged on the car body and connected with the fall arrest rope, one end of the actuating rod away from the fall arrest rope is connected with the car body through an elastic member, the first actuating wheel and the second actuating wheel are rotatably arranged on the car body and in transmission cooperation with the actuating rod, the first actuating wheel is provided with a first actuating protrusion, the first actuating protrusion is in abutment with the first wedge assembly, the first wedge assembly is movably arranged on the car body and can extend out of or retract into the car body, the second actuating wheel is provided with a second actuating protrusion, the second actuating protrusion is in abutment with the second wedge assembly, the second wedge assembly is movably arranged on the car body and can extend out of or retract into the car body; in the extended position, the first wedge assembly and the second wedge assembly can be wedged and limited by the groove wall of the cooperating groove.

2. A cable installation based lift protection apparatus as claimed in claim 1, wherein, The lifting module comprises a carrier plate, a first support, a second support, a lifting motor, a speed reducer and a lifting shaft, the carrier plate is provided with a plurality of hoops, the carrier plate is arranged on the cable through the hoops, the first support and the second support are spaced apart on the carrier plate, the speed reducer and the lifting motor are arranged on the first support and connected with each other, the lifting shaft is rotatably arranged on the second support and connected with the output shaft of the speed reducer, the lifting wheel is fixedly arranged on the lifting shaft and can follow the lifting shaft, one end of the lifting rope away from the carrier plate is wound and arranged on the outer periphery of the lifting wheel.

3. A cable installation based fall protection apparatus as claimed in claim 2, wherein, The stop module comprises a limiting assembly and a stopping assembly, the lifting wheel is provided with a stopping cooperation part, in the initial state, the limiting assembly is connected with the stopping assembly, the stopping assembly is separated from the stopping cooperation part, so that the lifting wheel can rotate normally; in the stopping state, the limiting assembly releases the stopping assembly, the stopping assembly is connected with the stopping cooperation part, so as to stop the lifting wheel.

4. A cable installation based lift protection apparatus as claimed in claim 3, wherein, The limiting assembly comprises a limiting motor, a limiting frame and a limiting hook, the limiting motor is vertically arranged and the motor shaft of the limiting motor is arranged upward, the limiting frame is connected with the motor shaft of the limiting motor, the limiting hook is arranged on the limiting frame, the stopping assembly comprises a stand, an elastic assembly, a cooperation block and a stopping pin, the cooperation block is arranged on the stand through the elastic assembly, the stopping pin is arranged on the cooperation block, the cooperation block is provided with a hook groove, the limiting hook is detachably hooked with the hook groove, and the stopping cooperation part is a stopping cooperation hole; In the stopping state, the limiting motor drives the limiting frame to drive the limiting hook to deflect, the limiting hook is separated from the hook groove, and the stopping pin is inserted into the stopping cooperation hole under the pushing of the elastic force of the elastic assembly to stop the lifting wheel.

5. A cable installation based lift protection apparatus as claimed in claim 4, wherein, The stopping cooperation hole is an inclined hole, the stopping pin is arranged obliquely, and one end of the stopping pin away from the cooperation block is arranged toward the hole of the inclined hole.

6. The cable installation based lift protection apparatus of claim 1, wherein, The cable installation based lifting protection device further comprises a controller and an instruction transmitter, the instruction transmitter is arranged on the seat plate, the controller is electrically connected with the force sensor, and a wireless receiving module of the controller is in communication connection with a wireless sending module of the instruction transmitter.

7. The cable installation based lift protection apparatus of claim 1, wherein, The application discloses a first actuating lever and a second actuating lever, the first actuating lever is provided with a first tooth part and a second tooth part which are oppositely arranged at intervals, the first actuating lever is further provided with a first matching tooth, the second actuating lever is further provided with a second matching tooth, the first matching tooth is meshed with the first tooth part, and the second matching tooth is meshed with the second tooth part.

8. A cable installation based lift protection apparatus as claimed in claim 7, wherein, The first wedge assembly and the second wedge assembly each comprise a carrier rod and a plurality of wedge blocks, and the plurality of wedge blocks are arranged on the carrier rod along the length direction of the carrier rod at intervals.

9. An electrically powered fall-protection device, characterized in that The cable installation based lifting protection device comprises any one of the devices according to claims 1-8.

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