CN112649126B - A safety monitoring device for cable construction - Google Patents

Abstract

The invention relates to the technical field of cable construction, in particular to a safety monitoring device for cable construction, which comprises a wire sleeve, wherein a wire inlet wheel and a wire outlet wheel are fixedly arranged in the wire sleeve, a cable penetrates through the wire sleeve, a side box is fixedly arranged on the wire sleeve, a top plate is fixedly arranged on the side box, a limiting groove is formed in the top plate, a sliding block is slidably arranged in the limiting groove, a force release rod is fixedly arranged on the sliding block, a reset spring is fixedly connected to the force release rod, a pressing wheel is rotatably arranged on the force release rod, a limiting rod is fixedly arranged on the top plate, and a sliding sleeve is slidably arranged on the limiting rod; the force releasing rod is used for feeding back traction force in real time and playing a role of timely releasing force, when the monitored pressure is overlarge, the force releasing rod can slide in the limiting groove through the sliding block, so that the sliding sleeve is avoided, the damage to a cable caused by the reaction force of the guide wheel is prevented, and the pressure of the force releasing rod exceeds the detection threshold value of the pressure sensor.

Description

A safety monitoring device for cable construction

technical field

The invention relates to the technical field of cable construction, in particular to a safety monitoring device for cable construction.

Background technique

With the upgrading of urban power grid transformation, the degree of cableization of urban power grids is getting higher and higher, and the role of cables in the power grid is becoming more and more important. When laying the cable, the front end of the cable is pulled by the pulling machine through the rope, and controlling the pulling force of the rope is the key link to ensure the quality of the cable laying. In the traditional power cable laying construction method, the on-site construction personnel decide whether to add a conveyor, add several conveyors, How to set up the pay-off rack, how to handle the turning, etc. When actually laying the cable, how much traction does the traction rope exert on the cable? The real-time change of the traction force cannot be accurately grasped, and human judgment will inevitably lead to errors. If the traction force is too large, it will be directly reflected in the bending of the cable. This leads to wrinkles and damages on the insulating sheath of the cable, which is a potential safety hazard. In view of this, we propose a safety monitoring device for cable construction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a safety monitoring device for cable construction to solve the problems raised in the above background art.

In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safety monitoring device for cable construction, comprising a wire sleeve, a wire inlet pulley and a wire outlet pulley are fixedly installed in the wire sleeve, and a cable runs through the wire sleeve, and the A side box is fixedly installed on the wire sleeve, and a top plate is fixedly installed on the side box, a limit groove is arranged on the top plate, and a slider is slidably installed in the limit groove, and a release rod is fixedly installed on the slider, And a reset spring is fixedly connected to the relief rod, and a pressure wheel is rotatably installed on the relief rod, a limit rod is fixedly installed on the top plate, and a sliding sleeve is slidably installed on the limit rod, and the sliding sleeve is rotatably installed There is a guide wheel, a sliding rail is fixedly installed on the side box, and a lifting spring is fixedly connected to the sliding rail, a baffle is fixedly connected to the lifting spring, and a pressure sensor is fixedly installed on the baffle. An electromagnet is fixedly installed in the side box, and the electromagnet is electrically connected to a power supply, and the power supply is electrically connected to a signal processor and an alarm.

Preferably, the wire sleeve is in the shape of an arc-shaped sleeve, and the wire inlet pulley and the wire outlet pulley are respectively installed at both ends of the wire casing, and the cable is wound on the wire inlet pulley, the guide pulley and the wire outlet pulley in sequence, and the guide pulley located in the middle of the sleeve.

Preferably, the side box is installed on the inner side of the arc-shaped wire sleeve, and the top plate is communicated with the inner cavity of the wire sleeve. On the block, the return spring is connected between the two relief rods, and the pressure wheel is installed on one end of the relief rod, the other end of the relief rod is installed with a ball through the spherical pair, and the sliding sleeve is located at the two ends. between the release levers, and the sliding sleeve is provided with inclined sides.

Preferably, there are two sliding rails, which are symmetrically installed on both sides of the top plate, the baffle is slidably connected in the sliding rail, and the lifting spring is connected between the baffle and the bottom of the sliding rail, and the pressure sensor is connected to On the inside of the baffle, and the pinch roller is in contact with the pressure sensor.

Preferably, the limit rod is vertically connected to the top plate, and the sliding sleeve is provided with a through groove, and the guide wheel is installed on the top of the sliding sleeve.

Preferably, the pressure sensor is electrically connected to the signal processor, the power supply is installed in the middle of the side box, the electromagnet and the alarm are controlled by the same switch of the power supply, and the electromagnet is installed at the bottom of the slide rail.

Compared with the prior art, the beneficial effects of the present invention are:

1. The arc track is formed by installing the three rollers of the incoming wire, the outgoing wire and the guide wheel in the arc-shaped wire sleeve to guide the cable, and the change of the traction force of the cable can be reflected on the guide wheel, and the guide wheel slides against each other. The sleeve generates pressure, and the pressure is shared on the two relief rods through the sliding sleeve. The relief rod can squeeze the pressure sensor through the pressure wheel at its end, so as to indirectly measure the traction force, and the traction force can be intuitively measured. Characterization, rather than relying on the experience of workers, the cable construction process is safer;

2. In the present invention, the real-time feedback of the traction force is carried out through the release lever, and the release lever can play the role of releasing the force in time. When the pressure is too large, the signal processor is used to control the switch of the power supply, while the alarm is passed. The other side generates suction through the electromagnet, which acts on the lifting spring to make it shrink, thereby driving the baffle and the pressure sensor to retract into the slide rail, allowing the release lever and the space for the pressure roller to move, releasing the force. The rod can slide in the limit groove through the slider, so as to avoid the sliding sleeve, prevent the cable damage caused by the reaction force of the guide wheel and the pressure of the relief rod exceeding the detection threshold of the pressure sensor.

Description of drawings

Fig. 1 is the schematic diagram of the overall structure of the present invention;

Fig. 2 is the schematic diagram of the pressure relief structure of the present invention;

FIG. 3 is a schematic diagram of the electrical connection structure of the present invention.

In the figure: Wire sleeve 1, incoming wire pulley 2, wire outlet pulley 3, cable 4, side box 5, top plate 6, limit groove 7, slider 8, release lever 9, return spring 10, pressure roller 11, limit Rod 12 , sliding sleeve 13 , guide wheel 14 , sliding rail 15 , jacking spring 16 , baffle 17 , pressure sensor 18 , electromagnet 19 , power supply 20 , signal processor 21 , and alarm 22 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 3 , the present invention provides a technical solution: a safety monitoring device for cable construction, comprising a wire sleeve 1 , a wire inlet pulley 2 and a wire outlet pulley 3 are fixedly installed in the wire sleeve 1 , and the wire A cable 4 runs through the sleeve 1, a side box 5 is fixedly installed on the wire sleeve 1, and a top plate 6 is fixedly installed on the side box 5, and a limit slot 7 is arranged on the top plate 6, and the limit slot 7 slides. A sliding block 8 is installed, a pressure relief rod 9 is fixedly installed on the sliding block 8, and a return spring 10 is fixedly connected to the relief rod 9, and a pressure wheel 11 is rotated and installed on the relief rod 9. The top plate 6 A limit rod 12 is fixedly installed on the upper limit, and a sliding sleeve 13 is slidably installed on the limit rod 12. A guide wheel 14 is rotatably installed on the sliding sleeve 13, and a sliding rail 15 is fixedly installed on the side box 5, and the sliding rail 15 is fixedly connected with a lifting spring 16, a baffle 17 is fixedly connected to the lifting spring 16, and a pressure sensor 18 is fixedly installed on the baffle 17, an electromagnet 19 is fixedly installed in the side box 5, and The electromagnet 19 is electrically connected to the power supply 20 , and the power supply 20 is electrically connected to the signal processor 21 and the alarm 22 .

The wire sleeve 1 is in the shape of an arc-shaped casing, and the wire inlet pulley 2 and the wire outlet pulley 3 are respectively installed at both ends of the wire casing 1, and the cable 4 is wound on the wire inlet pulley 2, the guide pulley 14 and the wire outlet pulley 3 in turn. , the guide wheel 14 is located in the middle of the wire sleeve 1, and an arc-shaped track is formed by three points of the wire inlet wheel 2, the wire outlet wheel 3 and the guide wheel 14. The cable 4 passes through the three rollers, and the cable can be maintained when the traction force is normal. The arc state of 4, and the friction force of the roller is small, it is not easy to cause the wear of the cable 4;

The side box 5 is installed on the inner side of the arc-shaped wire sleeve 1, and the top plate 6 is communicated with the inner cavity of the wire sleeve 1. The limit groove 7 and the slider 8 are mirrored in two groups on the top plate 6. 9 is installed obliquely on the slider 8, the return spring 10 is connected between the two relief rods 9, and the pressure roller 11 is installed on one end of the relief rod 9, and the other end of the relief rod 9 passes through the spherical pair Balls are installed, the sliding sleeve 13 is located between the two relief rods 9, and the sliding sleeve 13 is provided with inclined sides. When the cable 4 passes over the guide wheel 14, it will generate pressure on the guide wheel 14. As the traction force increases, the pressure on the guide wheel 14 is reflected on the sliding sleeve 13. The sliding sleeve 13 has a tendency to slide on the limit rod 12, and generates pressure on the relief rods 9 on both sides. By detecting the relief force The pressure of the rod 9 is used for indirect monitoring of the traction force of the cable 4. When the traction force is too large, in order to prevent the cable 4 from being damaged by the reaction force of the guide wheel 14 and the pressure of the relief lever 9 exceeding the detection threshold of the pressure sensor 18, the force release is performed. The rod 9 can slide in the limiting groove 7 through the slider 8, so as to avoid the sliding sleeve 13;

The sliding rails 15 are provided with two, symmetrically installed on both sides of the top plate 6, the baffle 17 is slidably connected in the sliding rail 15, and the lifting spring 16 is connected between the baffle 17 and the bottom of the sliding rail 15, so The pressure sensor 18 is connected to the inner side of the baffle plate 17, and the pressure wheel 11 is in contact with the pressure sensor 18, and the baffle plate 17 is slid up by the elastic force of the lifting spring 16, which drives the pressure sensor 18 to block the pressure sensor 18 at the end of the relief lever 9. On the pressure roller 11, the pressure generated by the pressure roller 11 is detected, thereby indirectly monitoring the traction force of the cable 4;

The limit rod 12 is vertically connected to the top plate 6, and the sliding sleeve 13 is provided with a through groove. The guide wheel 14 is installed on the top of the sliding sleeve 13, and the guide wheel 14 is in contact with the cable 4 to be stressed, and the pressure is applied. Reflected on the release lever 9 through the sliding sleeve 13;

The pressure sensor 18 is electrically connected to the signal processor 21, and the power supply 20 is installed in the middle of the side box 5. The electromagnet 19 and the alarm 22 are controlled by the same switch of the power supply 20, and the electromagnet 19 is installed on the slide rail. At the bottom of 15, the pressure of the pressure wheel 11 is sensed through the pressure sensor 18. The pressure sensor 18 converts the pressure signal into an electrical signal and transmits it to the signal processor 21. When the monitored pressure is too high, the signal processor 21 controls the power supply 20. On one side, the alarm 22 is used to alarm, and the other side generates suction through the electromagnet 19, which acts on the jacking spring 16 to make it shrink, thereby driving the baffle 17 and the pressure sensor 18 to retract into the slide rail 15 and let out The space for the release lever 9 and the pressure roller 11 to move;

Working principle: First, an arc-shaped track is formed by three points of the incoming wire pulley 2, the wire outlet pulley 3 and the guide pulley 14. The cable 4 passes through the three rollers, and passes through the wire sleeve 1 for laying when being pulled. When the traction force is normal, the arc state of the cable 4 can be maintained, and the friction force of the roller is small, which is not easy to cause the cable 4 to wear. The traction force increases, and the pressure on the guide wheel 14 is reflected on the sliding sleeve 13. The sliding sleeve 13 has a tendency to slide on the limit rod 12, which produces pressure on the relief rods 9 on both sides. A pressure roller 11 is installed at the end, and the baffle 17 is slid up by the elastic force of the jacking spring 16, which drives the pressure sensor 18 to block the pressure roller 11 at the end of the relief rod 9, and detects the pressure generated by the pressure roller 11. , so as to indirectly monitor the traction force of the cable 4 in real time. The pressure sensor 18 converts the pressure signal into an electrical signal and transmits it to the signal processor 21. When the monitored pressure is too large, the signal processor 21 controls the power supply 20 On one side, the alarm 22 is used to alarm, and the other side generates suction through the electromagnet 19, which acts on the jacking spring 16 to make it shrink, thereby driving the baffle 17 and the pressure sensor 18 to retract into the slide rail 15 and let out The space for the release lever 9 and the pressure roller 11 to move, the release lever 9 can slide in the limit slot 7 through the slider 8, thereby avoiding the sliding sleeve 13 and preventing the reaction force of the guide wheel 14 from causing damage to the cable 4 and releasing force The pressure of the rod 9 exceeds the detection threshold of the pressure sensor 18 .

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (2)

1. A safety monitoring device for cable construction, comprising a wire sleeve (1), characterized in that: an incoming wire pulley (2) and a wire outlet pulley (3) are fixedly installed in the wire sleeve (1), and the wire sleeve ( 1) A cable (4) runs through it, a side box (5) is fixedly installed on the wire sleeve (1), and a top plate (6) is fixedly installed on the side box (5), and the top plate (6) is provided with A limit slot (7), and a slider (8) is slidably installed in the limit slot (7), a release lever (9) is fixedly installed on the slider (8), and the release lever (9) is A return spring (10) is fixedly connected, a pressure wheel (11) is rotatably installed on the relief rod (9), a limit rod (12) is fixedly installed on the top plate (6), and the limit rod (12) is A sliding sleeve (13) is slidably installed, a guide wheel (14) is rotatably installed on the sliding sleeve (13), a sliding rail (15) is fixedly installed on the side box (5), and the sliding rail (15) is in the middle A lifting spring (16) is fixedly connected, a baffle plate (17) is fixedly connected to the lifting spring (16), and a pressure sensor (18) is fixedly installed on the baffle plate (17). ) is fixedly installed with an electromagnet (19), and the electromagnet (19) is electrically connected to a power supply (20), and the power supply (20) is electrically connected to a signal processor (21) and an alarm (22); The wire sleeve (1) is in the shape of an arc-shaped sleeve, and the wire inlet pulley (2) and the wire outlet pulley (3) are respectively installed at both ends of the wire sleeve (1), and the cable (4) is wound on the wire inlet pulley in turn. (2) on the guide wheel (14) and the wire outlet pulley (3), the guide wheel (14) is located in the middle of the wire sleeve (1); The side box (5) is installed on the inner side of the arc-shaped wire sleeve (1), and the top plate (6) is communicated with the inner cavity of the wire sleeve (1), and the limiting groove (7) and the slider (8) are on the top plate. (6) There are two sets of mirror images on the upper side, and the relief lever (9) is installed on the slider (8) obliquely, the return spring (10) is connected between the two relief levers (9), and the pressure roller (11) is installed on one end of the relief rod (9), the other end of the relief rod (9) is mounted with a ball through a spherical pair, and the sliding sleeve (13) is located between the two relief rods (9) , and the sliding sleeve (13) is provided with an inclined side surface; Two sliding rails (15) are provided, which are symmetrically installed on both sides of the top plate (6), the baffle plate (17) is slidably connected to the sliding rail (15), and the lifting spring (16) is connected to the baffle plate (17) and the bottom of the slide rail (15), the pressure sensor (18) is connected to the inner side of the baffle plate (17), and the pressure wheel (11) is in contact with the pressure sensor (18); the limit rod ( 12) It is vertically connected to the top plate (6), and the sliding sleeve (13) is provided with a through groove, and the guide wheel (14) is installed on the top of the sliding sleeve (13). 2. A safety monitoring device for cable construction according to claim 1, characterized in that: the pressure sensor (18) is electrically connected to the signal processor (21), and the power supply (20) is installed in the side box ( 5) In the middle, the electromagnet (19) and the alarm (22) are controlled by the same switch of the power supply (20), and the electromagnet (19) is installed at the bottom of the slide rail (15).

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