CN204190259U - Anti-wire off-line locking device - Google Patents

Abstract

A wire off-line locking device, including a low-tension end plate and a differential locking assembly, the low-tension end plate is anchored on the ground, and the first rope drawn from the low-tension end plate winds around the shaft of the differential locking assembly Connect to the end of the wire. The differential locking assembly includes a frame assembly, a roller assembly and an excitation assembly. The frame assembly includes a base plate and two internal tooth plates installed parallel and upright on the base plate. The drum assembly includes a drum, an external gear and a shaft, and the external gear is fixed at both ends of the drum and placed inside the internal teeth of the internal gear plate. The excitation component includes an inner gear, an inertia turntable and a ratchet. The turntable and the ratchet are installed in the inner teeth of the inner gear on one side. The inertia turntable is fixed at the end of the shaft, and the ratchet is arranged on one side of the inertia turntable and abuts against each other. When the lead wires fall off, the inertia turntable of the excitation component engages with the inner teeth of the internal gear of the drum assembly to lock the drum, thereby tightening the first rope and preventing the wires from being disconnected. fall off.

Description

Anti wire off-line locking device

【Technical field】

The utility model relates to power transmission and transformation construction equipment, in particular to a locking device for preventing wires from going off-line.

【Background technique】

In the tight-hanging process of the tension stringing of the power transmission line, a porcelain bottle string 200 is connected to one corner of the cross arm 100, and the porcelain bottle string 200 is connected to the tight-line pulley block 300. The wire tightening pulley block 300 retracts the wire 500 through the wire chuck 400 . Due to the high tension of the wire 500 when the wire is tightly hung, the loads of the wire clamp 400, the motorized winch, the steel wire rope, the pulley block and other machinery and equipment are relatively large, which increases the safety risk of the wire going off-line.

In order to improve the safety of construction, it is urgent to add a set of safety devices in the tight hanging wire process. When the wire accidentally falls off, it can be locked in time to prevent the continued fall to the ground and cause loss of personnel and property.

【Content of utility model】

In view of this, in order to overcome the deficiencies of the prior art, the utility model provides a locking device for preventing wires from falling off, which can lock the wires in time to prevent further falling when the wires accidentally fall off during the wire-hanging process.

A wire off-line locking device, comprising a low-tension end disc and a differential locking assembly, the low-tension end disc is anchored on the ground, and the first rope drawn from the low-tension end disc bypasses the speed difference locking device. The shaft of the differential locking assembly is attached to the end of the wire. The differential locking assembly includes a frame assembly, a roller assembly and an excitation assembly. The frame assembly includes a base plate and two internal tooth plates installed parallel and upright on the base plate. The drum assembly includes a drum, an external gear and a shaft, the drum sleeve for winding the first rope is housed outside the shaft, the external gear is fixed at both ends of the drum and placed in the inner Inside the inner teeth of the tooth plate, the outer diameter of the outer gear is smaller than the inner diameter of the inner teeth of the inner tooth plate. The excitation assembly includes an internal gear, an inertia turntable and a ratchet, the turntable and the ratchet are installed in the inner teeth of the inner gear on one side, the inertia turntable is fixed on the end of the shaft, and the ratchet The teeth are arranged on one side of the inertia turntable and abut against the inertia turntable, and the ratchet is pushed by the inertia turntable to selectively engage with the internal teeth of the internal gear to lock the drum .

In at least one preferred embodiment, the frame assembly further includes reinforcing rods and reinforcing plates, the reinforcing rods fix the internal tooth plates from above the two parallel internal tooth plates, and each inner tooth plate The reinforcement plates are respectively provided on both sides of the intersection of the tooth plate and the bottom plate.

In at least one preferred embodiment, the roller assembly includes roller sheets arranged at both ends of the roller, and the external gear is fixedly connected to the roller sheets.

In at least one preferred embodiment, the differential locking assembly further includes a low-tension power assembly, the low-tension power assembly includes a pulley, a belt, and a motor, the pulley is installed at the end of the shaft, and the pulley The belt connected to the motor is mounted on it.

In at least one preferred embodiment, the low-tension power assembly further includes a friction plate, the friction plate is fixed at the other end of the shaft, and the friction force between the friction plate and the shaft can be adjusted .

In at least one of the preferred embodiments, the wire off-line preventing locking device further includes a fixed pulley and a moving pulley, and the first rope coming out of the low-tension tail disc bypasses the speed difference locking assembly in turn. After passing around the fixed pulley and the movable pulley, it is fixed, and the end of the wire is connected with the shaft of the movable pulley through a second rope.

In at least one preferred embodiment, the fixed pulley is fixed on a corner of the cross arm, and the first rope after passing around the fixed pulley and the movable pulley in turn is fixed on the cross arm.

In at least one preferred embodiment, in the line tightening process, the end of the second rope is connected to the end of the wire by a clamp.

In at least one preferred embodiment, in the wire hanging process, the end of the second rope is connected to a fan-shaped plate, and the fan-shaped plate is connected to the clamp at the end of the wire.

In the anti-offline locking device of the utility model, when the wire falls off, the wire drives the first rope to quickly pull the roller of the speed difference locking assembly, and the inertial turntable of the excitation assembly excites the ratchet and the inner gear of the inner gear of the drum assembly. Engage to lock the drum, thereby pulling in and locking the first cord, effectively preventing further shedding of the wire.

【Description of drawings】

Fig. 1 is a schematic diagram of the tension stringing process of the tension stringing of the power transmission line.

Fig. 2 is a schematic diagram of the wire tightening process using the wire detachment prevention locking device according to the first preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of the wire-hanging process using the wire-off-line preventing locking device according to the second preferred embodiment of the present invention.

Fig. 4 is a three-dimensional structural schematic diagram of the speed difference locking assembly of the wire off-line preventing locking device in Fig. 2 and Fig. 3 .

Fig. 5 is an axial sectional view of the differential lock assembly in Fig. 4 .

Fig. 6 is a side view of the differential lock assembly in Fig. 4 .

【Detailed ways】

In order to better understand the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and specific examples.

Please refer to FIG. 2 , which is a schematic diagram of the first preferred embodiment of the present invention when the wire detachment preventing locking device is used in the wire tightening process. The wire off-line preventing locking device of the first preferred embodiment of the present utility model includes a low-tension tail disc 600 and a differential locking assembly 700 . The low-tension end plate 600 is anchored on the ground, and the first rope coming out of the low-tension end plate 600 bypasses the speed difference locking assembly 700 and then passes through the fixed pulley 800 and the movable pulley 900 in sequence, and finally the end of the rope is fixed on the crossarm 100 on one corner. The end of the lead wire 500 is connected to the shaft of the movable pulley 900 through a second rope. In the line tightening process, the end of the second rope and the end of the wire 500 are connected by a clamp. When the wire 500 falls off, the wire 500 drives the moving pulley 900 to pull down quickly, the first rope quickly pulls the speed difference locking assembly 700, and the speed difference locking device locks the first rope, thereby effectively preventing the wire 500 from falling off further.

Please refer to FIG. 3 , which is a schematic diagram of the second preferred embodiment of the present invention when the wire-off-line preventing locking device is used in the wire-hanging process. The second preferred embodiment of the utility model includes a wire off-line preventing locking device comprising a low-tension tail plate 600 and a differential locking assembly 700 . The low-tension end plate 600 is anchored on the ground, and the first rope coming out of the low-tension end plate 600 bypasses the speed difference locking assembly 700 and then passes through the fixed pulley 800 and the movable pulley 900 in sequence, and finally the end of the rope is fixed on the crossarm 100 on one corner. The end of the lead wire 500 is connected to the shaft of the movable pulley 900 through a second rope. In the wire hanging process, the end of the second rope is connected to the fan-shaped plate, and the fan-shaped plate is connected to the clamp at the end of the wire 500 .

When the wire 500 falls off, the wire 500 drives the moving pulley 900 to pull down quickly, the first rope quickly pulls the speed difference locking assembly 700, and the speed difference locking device locks the first rope, thereby effectively preventing the wire 500 from falling off further.

For the two working conditions of tight wire and hanging wire, the difference is only in the clamping method of the wire tail. When the wire is tightened, the wire has not been crimped to the tension clamp, and the middle section of the wire can only be clamped by the wire clamp. Under heavy load and impact, the surface of the wire may be damaged. In the subsequent crimping process, the damaged wire segment needs to be cut before crimping. When hanging the wire, the surface of the wire can no longer be damaged, and the wire head has been crimped with a strain clamp. The clamping method can only be connected in series with the wire run-proof system and the wire strain clamp through a certain clamp.

In the above-mentioned first and second preferred embodiments, the setting of the fixed pulley 800 and the movable pulley 900 is to achieve the purpose of amplifying the shedding speed of the wire 500 and saving labor. In other embodiments, if objective conditions permit, the fixed pulley and the movable pulley can also be omitted, and the first rope coming out of the speed differential locking assembly 700 is directly connected to the end of the wire 500 .

Please refer to FIG. 4 to FIG. 6 , the differential lock assembly 700 includes four parts: a frame assembly 710 , a roller assembly 720 , an excitation assembly 730 and a low-tension power assembly 740 . The frame assembly 710 is the main frame structure of the differential locking assembly 700 , forming a supporting part of the differential locking assembly 700 . The roller assembly 720 is a rolling part of the differential locking assembly 700, and realizes retracting and unwinding of the first rope. The excitation component 730 is a speed difference excitation and locking actuator, which performs locking in response to the speed difference. The low tension component 730 provides tension for the first rope, and can perform retraction and retraction of the rope.

The frame assembly 710 includes a bottom plate 711 , an inner gear plate 712 , a reinforcing rod 713 and a reinforcing plate 714 . Bottom plate 711 is the base of the whole speed difference locking assembly 700, two parallel internal tooth plates 712 are installed upright on the bottom plate 711, and reinforcing rod 713 strengthens and fixes internal tooth plate 713 from above the two parallel internal tooth plates 712, each Reinforcing plates 714 are respectively provided on both sides of the intersection of the inner tooth plate 712 and the bottom plate 711 .

The roller assembly 720 includes a roller 721 , a roller piece 722 , an external gear 723 and a shaft 724 . The roller 721 is sheathed on the shaft 724 and installed between the two parallel inner gear plates 712 through the roller piece 722 . An external gear 723 is disposed on the outer side of the roller sheet 722 , and the external gear 723 is placed inside the internal teeth of the internal tooth plate 712 , and the external gear 723 is smaller than the internal teeth of the internal tooth plate 712 .

The excitation component 730 includes a mechanical plate 731 , an internal gear 732 , an inertial turntable 733 and a ratchet 734 . The mechanical plate 731 is fixed on the outside of the inner tooth plate 712 and is used for the positioning connection of the inner gear 732 , the inertial turntable 733 and the ratchet 734 . The internal gear 732 is mounted on the outer side of the mechanical plate 731 on one side. An inertia turntable 733 and a ratchet 734 are arranged inside the inner teeth of the inner gear 732 . The inertia turntable 733 is fixed on the end of the shaft 724 and rotates together with the shaft 724 . The ratchet 734 is arranged on one side of the inertial turntable 733 and leans against the inertial turntable 733 .

The low-tension power assembly 740 includes a pulley 741, a belt, a friction plate, a low-speed motor and the like. A pulley 741 is mounted on the end of the shaft 724, on the outside of the mechanical plate 731 on the other side. The friction plate is fixed on the other end of the shaft 724, and the friction force can be adjusted by manually adjusting the tightness between the friction plate and the shaft 724. Friction is used as the slight tension of the reel during the pay-off process. It needs to be manually adjusted to an appropriate level according to the actual situation. It is necessary to keep the rope in a slightly tensioned state without drooping, and it should not be too tight. Too much tension will increase the reel’s rotational torque. , which brings difficulties to construction. A belt connected to the low-speed motor is installed on the pulley 741 , and the power of the low-speed motor is transmitted to the pulley 741 by the belt. The belt pulley 741 is connected with the motor, and the tension is provided by the motor, which can ensure that the first rope is always in a tensioned state, and can respond in time when it falls. At the same time, the motor can also drive the drum 721 to rotate and retract the rope, saving time and effort.

The speed difference locking assembly 700 is fixed on the ground by expansion bolts or ground anchors, and its principle is similar to the safety belt of a car and the speed difference fall arrester commonly used when working on a tower. When the line is normally tightly hung, the first rope is in a low-speed or low-acceleration state, and the roller 721 of the speed difference locking assembly 700 can freely rotate forward and reverse without affecting the first rope for retracting and unwinding operations. Once the wire 500 falls off accidentally, the wire 500 pulls the roller 721 of the speed difference locking assembly 700 to rotate quickly, and the rotation of the roller 721 is transmitted to the inertial turntable 733 through the shaft 724, driving the inertial turntable 733 to rotate. When the rotation acceleration of the shaft 724 is too large and faster than the set value of the inertial turntable 733 , the inertial turntable 733 pushes the ratchet 734 to move outward, so that the ratchet 734 meshes with the internal gear 732 . At this time, the drum 721 cannot rotate, and the drum assembly 720 is moved upwards. The external gear 723 of the drum assembly 720 meshes with the inner gear plate 712 of the frame assembly 710, and finally the drum 721 stops rotating to achieve the purpose of locking in time.

The wire off-line preventing locking device of the utility model can rotate freely when the wire is retracted and unwound normally, without affecting the construction. When the wire accidentally falls, it can react in time according to its acceleration, and lock it to prevent further falling, which greatly reduces the risk of wire running during the construction of tight hanging wires. It has high reliability and is of popularization value.

The anti-wire off-line locking device of the utility model transmits the load of the first rope to the ground through the frame through the meshing of the secondary gear, thereby greatly improving the safety factor of the device.

It should be noted that the wire detachment prevention locking device of the present invention can also be applied to other occasions where anti-falling is required.

The above-mentioned implementation examples only express some implementations of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the present utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (9)

1. An anti-wire off-line locking device, characterized in that: the anti-wire off-line locking device includes a low-tension tail plate and a speed difference locking assembly, and the low-tension end plate is anchored on the ground, from the The first rope drawn from the low-tension tail disc is connected to the end of the wire around the shaft of the differential locking assembly, and the differential locking assembly includes a frame assembly, a drum assembly and an excitation assembly, and the frame assembly It includes a base plate and two internal tooth plates installed parallel and upright on the base plate, the drum assembly includes a drum, an external gear and a shaft, and the drum sleeve for winding the first rope is housed outside the shaft, The external gear is fixed at both ends of the drum and placed inside the internal teeth of the internal tooth plate, the outer diameter of the external gear is smaller than the internal diameter of the internal teeth of the internal tooth plate, and the excitation assembly includes Internal gear, inertia turntable and ratchet, the turntable and ratchet are installed in the internal teeth of the inner gear on one side, the inertia turntable is fixed at the end of the shaft, and the ratchet is arranged on the One side of the inertia turntable abuts against the inertia turntable, and the ratchet is pushed by the inertia turntable to selectively engage with the internal teeth of the internal gear to lock the drum. the 2. The wire off-line preventing locking device according to claim 1, characterized in that: the frame assembly also includes a reinforcing rod and a reinforcing plate, and the reinforcing rod is connected to the two parallel internal tooth plates from above the two parallel internal tooth plates. The internal tooth plate is fixed, and the two sides of the intersection of each internal tooth plate and the bottom plate are respectively provided with the reinforcement plates. the 3. The locking device according to claim 1, wherein the roller assembly includes roller pieces arranged at both ends of the roller, and the external gear is fixedly connected to the roller pieces. the 4. The wire off-line preventing locking device according to any one of claims 1 to 3, characterized in that: the differential locking assembly further includes a low-tension power assembly, and the low-tension power assembly includes a pulley, A belt and a motor, the pulley is installed at the end of the shaft, the belt connected to the motor is mounted on the pulley. the 5. The locking device according to claim 4, characterized in that: the low-tension power assembly further includes a friction plate, the friction plate is fixed on the other end of the shaft, and the friction plate The size of the friction force with the shaft can be adjusted. the 6. The wire off-line preventing locking device according to claim 4, characterized in that: the wire off-line preventing locking device further comprises a fixed pulley and a movable pulley, and the first After the rope goes around the speed difference locking assembly, it goes around the fixed pulley and the movable pulley in turn and then fixes it. The end of the wire is connected to the shaft of the movable pulley through a second rope. the 7. The locking device for preventing wire off-line according to claim 6, characterized in that: the fixed pulley is fixed on a corner of the cross arm, and the first pulley behind the fixed pulley and the movable pulley is bypassed in turn. The rope is fixed on the cross arm. the 8 . The wire detachment preventing locking device according to claim 7 , wherein, in the wire tightening process, the end of the second rope is connected to the end of the wire by a clamp. 9 . the 9. The wire-off-line preventing locking device according to claim 7, characterized in that: in the wire-hanging process, the end of the second rope is connected to a fan-shaped plate, and the fan-shaped plate is connected to the end of the wire. Clamp connection. the